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4100 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
744fab2d9f |
tracing updates for v6.15:
- Add option traceoff_after_boot In order to debug kernel boot, it sometimes is helpful to enable tracing via the kernel command line. Unfortunately, by the time the login prompt appears, the trace is overwritten by the init process and other user space start up applications. Adding a "traceoff_after_boot" will disable tracing when the kernel passes control to init which will allow developers to be able to see the traces that occurred during boot. - Clean up the mmflags macros that display the GFP flags in trace events The macros to print the GFP flags for trace events had a bit of duplication. The code was restructured to remove duplication and in the process it also adds some flags that were missed before. - Removed some dead code and scripts/draw_functrace.py draw_functrace.py hasn't worked in years and as nobody complained about it, remove it. - Constify struct event_trigger_ops The event_trigger_ops is just a structure that has function pointers that are assigned when the variables are created. These variables should all be constants. - Other minor clean ups and fixes -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ+V9IhQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qr4RAP9JhE3n69pGuOVaJTN/LGLr2Axl59n4 KqZSZS1nUM76/gD6AxYpR7nxyxgJ7VjNkLptS9tSjJVdPDxGAl0v3eO04w4= =SU30 -----END PGP SIGNATURE----- Merge tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Add option traceoff_after_boot In order to debug kernel boot, it sometimes is helpful to enable tracing via the kernel command line. Unfortunately, by the time the login prompt appears, the trace is overwritten by the init process and other user space start up applications. Adding a "traceoff_after_boot" will disable tracing when the kernel passes control to init which will allow developers to be able to see the traces that occurred during boot. - Clean up the mmflags macros that display the GFP flags in trace events The macros to print the GFP flags for trace events had a bit of duplication. The code was restructured to remove duplication and in the process it also adds some flags that were missed before. - Removed some dead code and scripts/draw_functrace.py draw_functrace.py hasn't worked in years and as nobody complained about it, remove it. - Constify struct event_trigger_ops The event_trigger_ops is just a structure that has function pointers that are assigned when the variables are created. These variables should all be constants. - Other minor clean ups and fixes * tag 'trace-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: Replace strncpy with memcpy for fixed-length substring copy tracing: Fix synth event printk format for str fields tracing: Do not use PERF enums when perf is not defined tracing: Ensure module defining synth event cannot be unloaded while tracing tracing: fix return value in __ftrace_event_enable_disable for TRACE_REG_UNREGISTER tracing/osnoise: Fix possible recursive locking for cpus_read_lock() tracing: Align synth event print fmt tracing: gfp: vsprintf: Do not print "none" when using %pGg printf format tracepoint: Print the function symbol when tracepoint_debug is set tracing: Constify struct event_trigger_ops scripts/tracing: Remove scripts/tracing/draw_functrace.py tracing: Update MAINTAINERS file to include tracepoint.c tracing/user_events: Slightly simplify user_seq_show() tracing/user_events: Don't use %pK through printk tracing: gfp: Remove duplication of recording GFP flags tracing: Remove orphaned event_trace_printk ring-buffer: Fix typo in comment about header page pointer tracing: Add traceoff_after_boot option |
||
|
Linus Torvalds
|
5c2a430e85 |
Ext4 bug fixes and cleanups, including:
* hardening against maliciously fuzzed file systems
* backwards compatibility for the brief period when we attempted to
ignore zero-width characters
* avoid potentially BUG'ing if there is a file system corruption found
during the file system unmount
* fix free space reporting by statfs when project quotas are enabled
and the free space is less than the remaining project quota
Also improve performance when replaying a journal with a very large
number of revoke records (applicable for Lustre volumes).
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Merge tag 'ext4-for_linus-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"Ext4 bug fixes and cleanups, including:
- hardening against maliciously fuzzed file systems
- backwards compatibility for the brief period when we attempted to
ignore zero-width characters
- avoid potentially BUG'ing if there is a file system corruption
found during the file system unmount
- fix free space reporting by statfs when project quotas are enabled
and the free space is less than the remaining project quota
Also improve performance when replaying a journal with a very large
number of revoke records (applicable for Lustre volumes)"
* tag 'ext4-for_linus-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (71 commits)
ext4: fix OOB read when checking dotdot dir
ext4: on a remount, only log the ro or r/w state when it has changed
ext4: correct the error handle in ext4_fallocate()
ext4: Make sb update interval tunable
ext4: avoid journaling sb update on error if journal is destroying
ext4: define ext4_journal_destroy wrapper
ext4: hash: simplify kzalloc(n * 1, ...) to kzalloc(n, ...)
jbd2: add a missing data flush during file and fs synchronization
ext4: don't over-report free space or inodes in statvfs
ext4: clear DISCARD flag if device does not support discard
jbd2: remove jbd2_journal_unfile_buffer()
ext4: reorder capability check last
ext4: update the comment about mb_optimize_scan
jbd2: fix off-by-one while erasing journal
ext4: remove references to bh->b_page
ext4: goto right label 'out_mmap_sem' in ext4_setattr()
ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all()
ext4: introduce ITAIL helper
jbd2: remove redundant function jbd2_journal_has_csum_v2or3_feature
ext4: remove redundant function ext4_has_metadata_csum
...
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||
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Petr Mladek
|
f49040c7aa | Merge branch 'for-6.15-console-suspend-api-cleanup' into for-linus | ||
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Linus Torvalds
|
22093997ac |
ata changes for 6.15
- Add 'external' to the libata.force module parameter, in order to
allow a user to workaround broken firmware (me)
- Use the str_up_down() helper in the sata_via driver (Salah Triki)
- Convert the Freescale PowerQUICC SATA device tree binding to YAML
(J. Neuschäfer)
- Do not use ATAPI DMA for a device that only supports PIO (me)
- Add Marvell 88SE9215 PCI device ID to the ahci driver.
Since the controller has quirks, it cannot rely on the generic
AHCI PCI class code entry (Daniel Kral)
- Improve the return value of atapi_check_dma() (Huacai Chen)
- Fix the NCQ Non-Data log not supported print to actually reference
the correct log (me)
- Make Marvel 88SE9215 prefer DMA for ATAPI devices (Huacai Chen)
- Simplify the AHCI IRQ vector allocations by performing the IRQ
vector allocations in the same function, regardless of IRQ type
(Tomas Henzl)
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Merge tag 'ata-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata updates from Niklas Cassel:
- Add 'external' to the libata.force module parameter, in order to
allow a user to workaround broken firmware (me)
- Use the str_up_down() helper in the sata_via driver (Salah Triki)
- Convert the Freescale PowerQUICC SATA device tree binding to YAML
(J. Neuschäfer)
- Do not use ATAPI DMA for a device that only supports PIO (me)
- Add Marvell 88SE9215 PCI device ID to the ahci driver. Since the
controller has quirks, it cannot rely on the generic AHCI PCI class
code entry (Daniel Kral)
- Improve the return value of atapi_check_dma() (Huacai Chen)
- Fix the NCQ Non-Data log not supported print to actually reference
the correct log (me)
- Make Marvel 88SE9215 prefer DMA for ATAPI devices (Huacai Chen)
- Simplify the AHCI IRQ vector allocations by performing the IRQ vector
allocations in the same function, regardless of IRQ type (Tomas
Henzl)
* tag 'ata-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux:
ata: ahci: simplify init function
ahci: Marvell 88SE9215 controllers prefer DMA for ATAPI
ata: libata: Fix NCQ Non-Data log not supported print
ata: libata: Improve return value of atapi_check_dma()
ahci: add PCI ID for Marvell 88SE9215 SATA Controller
ata: libata-eh: Do not use ATAPI DMA for a device limited to PIO mode
dt-bindings: ata: Convert fsl,pq-sata to YAML
ata: sata_via: Use str_up_down() helper in vt6420_prereset()
ata: libata-core: Add 'external' to the libata.force kernel parameter
|
||
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Linus Torvalds
|
fb1ceb29b2 |
platform-drivers-x86 for v6.15-1
Highlights:
- alienware-wmi: Refactor and split WMAX/legacy drivers
- dell-ddv:
- Correct +0.1 offset in temperature
- Use the power supply extension mechanism for battery temperatures
- intel/pmc:
- Refactor init to mostly use a common init function
- Add support for Arrow Lake U/H
- Add support for Panther Lake
- intel/sst:
- Improve multi die handling
- Prefix header search path with sysroot (fixes cross-compiling)
- lenovo-wmi-hotkey-utilities: Support for mic & audio mute LEDs
- samsung-galaxybook: Add driver for Samsung Galaxy Book series
- wmi:
- Rework WCxx/WExx ACPI method handling
- Enable data block collection when the data block is set
- platform/arm:
- Add Huawei Matebook E Go EC driver
- platform/mellanox:
- Relocate to drivers/platform/mellanox/
- mlxbf-bootctl: RTC battery status sysfs support
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
alienware-wmi:
- Add a state container for LED control feature
- Add a state container for thermal control methods
- Add alienware-wmi.h
- Add WMI Drivers
- Refactor hdmi, amplifier, deepslp methods
- Refactor LED control methods
- Refactor thermal control methods
- Rename alienware-wmi.c
- Split DMI table
- Split the alienware-wmi driver
- Update alienware-wmi config entries
- Update header and module information
amd/pmc:
- fix leak in probe()
- Move macros and structures to the PMC header file
- Notify user when platform does not support s0ix transition
- Remove unnecessary line breaks
- Use managed APIs for mutex
amd/pmf:
- convert timeouts to secs_to_jiffies()
amd:
- Use *-y instead of *-objs in Makefiles
arm64:
- add Huawei Matebook E Go EC driver
arm64: dts: qcom: gaokun3:
- Add Embedded Controller node
compal-laptop:
- Do not include <linux/fb.h>
dell-ddv:
- Fix temperature calculation
- Use devm_battery_hook_register
- Use the power supply extension mechanism
dell: dell-wmi-sysman:
- Use *-y instead of *-objs in Makefile
dell:
- Modify Makefile alignment
- Use *-y instead of *-objs in Makefile
dell-uart-backlight:
- Make dell_uart_bl_serdev_driver static
dt-bindings: platform:
- Add Huawei Matebook E Go EC
hp-bioscfg:
- Replace deprecated strncpy() with strscpy()
- Use wmi_instance_count()
hp:
- Use *-y instead of *-objs in Makefile
hwmon:
- (hp-wmi-sensors) Use the WMI bus API when accessing sensors
ideapad-laptop:
- use dev_groups to register attribute groups
int3472:
- Call "func" "con_id" instead
intel/pmc:
- Add Arrow Lake U/H support to intel_pmc_core driver
- Add Panther Lake support to intel_pmc_core
- Create generic_core_init() for all platforms
- Make tgl_core_generic_init() static
- Move arch specific action to init function
- Remove duplicate enum
- Remove simple init functions
- Remove unnecessary declarations in header
- Remove unneeded extern keyword in header
intel:
- Use *-y instead of *-objs in Makefile
irqdomain: platform/x86:
- Switch to irq_domain_create_linear()
lenovo-wmi-hotkey-utilities.c:
- Support for mic and audio mute LEDs
lenovo-yoga-tab2-pro-1380-fastcharger:
- Make symbol static
MAINTAINERS:
- Add documentation reference for Mellanox platform
- Update ALIENWARE WMI DRIVER entry
mellanox:
- Relocate mlx-platform driver
mlxbf-bootctl:
- Support sysfs entries for RTC battery status
mlx-platform:
- Change register name
- Cosmetic changes
samsung-galaxybook:
- Add samsung-galaxybook driver
- Fix block_recording not supported logic
sonypi:
- Use str_on_off() helper in sonypi_display_info()
think-lmi:
- Use ACPI object when extracting strings
- Use WMI bus API when accessing BIOS settings
thinkpad_acpi:
- check the return value of devm_mutex_init()
- convert timeouts to secs_to_jiffies()
- Do not include <linux/fb.h>
- Move HWMON initialization to tpacpi_hwmon_pdriver's probe
- Move subdriver initialization to tpacpi_pdriver's probe.
tools/power/x86/intel-speed-select:
- Die ID for IO dies
- Fix the condition to check multi die system
- Prefix header search path with sysroot
- Prevent increasing MAX_DIE_PER_PACKAGE
- v1.22 release
wmi:
- Call WCxx methods when setting data blocks
- Rework WCxx/WExx ACPI method handling
- Update documentation regarding the GUID-based API
- Use devres to disable the WMI device
x86-android-tablets:
- Add select POWER_SUPPLY to Kconfig
Merges:
- Merge branch 'fixes' into for-next
- Merge branch 'intel-sst' of https://github.com/spandruvada/linux-kernel into review-ilpo-next
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Merge tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform drivers updates from Ilpo Järvinen:
- alienware-wmi:
- Refactor and split WMAX/legacy drivers
- dell-ddv:
- Correct +0.1 offset in temperature
- Use the power supply extension mechanism for battery temperatures
- intel/pmc:
- Refactor init to mostly use a common init function
- Add support for Arrow Lake U/H
- Add support for Panther Lake
- intel/sst:
- Improve multi die handling
- Prefix header search path with sysroot (fixes cross-compiling)
- lenovo-wmi-hotkey-utilities:
- Support for mic & audio mute LEDs
- samsung-galaxybook:
- Add driver for Samsung Galaxy Book series
- wmi:
- Rework WCxx/WExx ACPI method handling
- Enable data block collection when the data block is set
- platform/arm:
- Add Huawei Matebook E Go EC driver
- platform/mellanox:
- Relocate to drivers/platform/mellanox/
- mlxbf-bootctl:
- RTC battery status sysfs support
- Miscellaneous cleanups / refactoring / improvements
* tag 'platform-drivers-x86-v6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (75 commits)
platform/x86: x86-android-tablets: Add select POWER_SUPPLY to Kconfig
platform/x86/amd/pmf: convert timeouts to secs_to_jiffies()
platform/x86: thinkpad_acpi: convert timeouts to secs_to_jiffies()
irqdomain: platform/x86: Switch to irq_domain_create_linear()
platform/x86/amd/pmc: fix leak in probe()
tools/power/x86/intel-speed-select: v1.22 release
tools/power/x86/intel-speed-select: Prefix header search path with sysroot
tools/power/x86/intel-speed-select: Die ID for IO dies
tools/power/x86/intel-speed-select: Fix the condition to check multi die system
tools/power/x86/intel-speed-select: Prevent increasing MAX_DIE_PER_PACKAGE
platform/x86/amd/pmc: Use managed APIs for mutex
platform/x86/amd/pmc: Remove unnecessary line breaks
platform/x86/amd/pmc: Move macros and structures to the PMC header file
platform/x86/amd/pmc: Notify user when platform does not support s0ix transition
platform/x86: dell-ddv: Use the power supply extension mechanism
platform/x86: dell-ddv: Use devm_battery_hook_register
platform/x86: dell-ddv: Fix temperature calculation
platform/x86: thinkpad_acpi: check the return value of devm_mutex_init()
platform/x86: samsung-galaxybook: Fix block_recording not supported logic
platform/x86: dell-uart-backlight: Make dell_uart_bl_serdev_driver static
...
|
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Mickaël Salaün
|
8e2dd47b10
|
landlock: Add audit documentation
Because audit is dedicated to the system administrator, create a new entry in Documentation/admin-guide/LSM . Extend other Landlock documentation's pages with this new one. Extend UAPI with the new log flags. Extend the guiding principles with logs. Cc: Günther Noack <gnoack@google.com> Cc: Paul Moore <paul@paul-moore.com> Link: https://lore.kernel.org/r/20250320190717.2287696-29-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net> |
||
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Linus Torvalds
|
1e26c5e28c |
[GIT PULL for v6.15] media updates
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||
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Linus Torvalds
|
7d20aa5c32 |
Power management updates for 6.15-rc1
- Manage sysfs attributes and boost frequencies efficiently from
cpufreq core to reduce boilerplate code in drivers (Viresh Kumar).
- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, zuoqian).
- Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
Bai).
- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski).
- Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng).
- Optimize the amd-pstate driver to avoid cases where call paths end
up calling the same writes multiple times and needlessly caching
variables through code reorganization, locking overhaul and tracing
adjustments (Mario Limonciello, Dhananjay Ugwekar).
- Make it possible to avoid enabling capacity-aware scheduling (CAS) in
the intel_pstate driver and relocate a check for out-of-band (OOB)
platform handling in it to make it detect OOB before checking HWP
availability (Rafael Wysocki).
- Fix dbs_update() to avoid inadvertent conversions of negative integer
values to unsigned int which causes CPU frequency selection to be
inaccurate in some cases when the "conservative" cpufreq governor is
in use (Jie Zhan).
- Update the handling of the most recent idle intervals in the menu
cpuidle governor to prevent useful information from being discarded
by it in some cases and improve the prediction accuracy (Rafael
Wysocki).
- Make it possible to tell the intel_idle driver to ignore its built-in
table of idle states for the given processor, clean up the handling
of auto-demotion disabling on Baytrail and Cherrytrail chips in it,
and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy,
Rafael Wysocki).
- Make some cpuidle drivers use for_each_present_cpu() instead of
for_each_possible_cpu() during initialization to avoid issues
occurring when nosmp or maxcpus=0 are used (Jacky Bai).
- Clean up the Energy Model handling code somewhat (Rafael Wysocki).
- Use kfree_rcu() to simplify the handling of runtime Energy Model
updates (Li RongQing).
- Add an entry for the Energy Model framework to MAINTAINERS as
properly maintained (Lukasz Luba).
- Address RCU-related sparse warnings in the Energy Model code (Rafael
Wysocki).
- Remove ENERGY_MODEL dependency on SMP and allow it to be selected
when DEVFREQ is set without CPUFREQ so it can be used on a wider
range of systems (Jeson Gao).
- Unify error handling during runtime suspend and runtime resume in the
core to help drivers to implement more consistent runtime PM error
handling (Rafael Wysocki).
- Drop a redundant check from pm_runtime_force_resume() and rearrange
documentation related to __pm_runtime_disable() (Rafael Wysocki).
- Rework the handling of the "smart suspend" driver flag in the PM core
to avoid issues hat may occur when drivers using it depend on some
other drivers and clean up the related PM core code (Rafael Wysocki,
Colin Ian King).
- Fix the handling of devices with the power.direct_complete flag set
if device_suspend() returns an error for at least one device to avoid
situations in which some of them may not be resumed (Rafael Wysocki).
- Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
possible deadlock that may occur if the "compressor" hibernation
module parameter is accessed during the registration of a new
ieee80211 device (Lizhi Xu).
- Suppress sleeping parent warning in device_pm_add() in the case when
new children are added under a device with the power.direct_complete
set after it has been processed by device_resume() (Xu Yang).
- Remove needless return in three void functions related to system
wakeup (Zijun Hu).
- Replace deprecated kmap_atomic() with kmap_local_page() in the
hibernation core code (David Reaver).
- Remove unused helper functions related to system sleep (David Alan
Gilbert).
- Clean up s2idle_enter() so it does not lock and unlock CPU offline
in vain and update comments in it (Ulf Hansson).
- Clean up broken white space in dpm_wait_for_children() (Geert
Uytterhoeven).
- Update the cpupower utility to fix lib version-ing in it and memory
leaks in error legs, remove hard-coded values, and implement CPU
physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
Khan, Yiwei Lin, Zhongqiu Han).
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Merge tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These are dominated by cpufreq updates which in turn are dominated by
updates related to boost support in the core and drivers and
amd-pstate driver optimizations.
Apart from the above, there are some cpuidle updates including a
rework of the most recent idle intervals handling in the venerable
menu governor that leads to significant improvements in some
performance benchmarks, as the governor is now more likely to predict
a shorter idle duration in some cases, and there are updates of the
core device power management code, mostly related to system suspend
and resume, that should help to avoid potential issues arising when
the drivers of devices depending on one another want to use different
optimizations.
There is also a usual collection of assorted fixes and cleanups,
including removal of some unused code.
Specifics:
- Manage sysfs attributes and boost frequencies efficiently from
cpufreq core to reduce boilerplate code in drivers (Viresh Kumar)
- Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider,
Dhananjay Ugwekar, Imran Shaik, zuoqian)
- Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky
Bai)
- cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski)
- Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng)
- Optimize the amd-pstate driver to avoid cases where call paths end
up calling the same writes multiple times and needlessly caching
variables through code reorganization, locking overhaul and tracing
adjustments (Mario Limonciello, Dhananjay Ugwekar)
- Make it possible to avoid enabling capacity-aware scheduling (CAS)
in the intel_pstate driver and relocate a check for out-of-band
(OOB) platform handling in it to make it detect OOB before checking
HWP availability (Rafael Wysocki)
- Fix dbs_update() to avoid inadvertent conversions of negative
integer values to unsigned int which causes CPU frequency selection
to be inaccurate in some cases when the "conservative" cpufreq
governor is in use (Jie Zhan)
- Update the handling of the most recent idle intervals in the menu
cpuidle governor to prevent useful information from being discarded
by it in some cases and improve the prediction accuracy (Rafael
Wysocki)
- Make it possible to tell the intel_idle driver to ignore its
built-in table of idle states for the given processor, clean up the
handling of auto-demotion disabling on Baytrail and Cherrytrail
chips in it, and update its MAINTAINERS entry (David Arcari, Artem
Bityutskiy, Rafael Wysocki)
- Make some cpuidle drivers use for_each_present_cpu() instead of
for_each_possible_cpu() during initialization to avoid issues
occurring when nosmp or maxcpus=0 are used (Jacky Bai)
- Clean up the Energy Model handling code somewhat (Rafael Wysocki)
- Use kfree_rcu() to simplify the handling of runtime Energy Model
updates (Li RongQing)
- Add an entry for the Energy Model framework to MAINTAINERS as
properly maintained (Lukasz Luba)
- Address RCU-related sparse warnings in the Energy Model code
(Rafael Wysocki)
- Remove ENERGY_MODEL dependency on SMP and allow it to be selected
when DEVFREQ is set without CPUFREQ so it can be used on a wider
range of systems (Jeson Gao)
- Unify error handling during runtime suspend and runtime resume in
the core to help drivers to implement more consistent runtime PM
error handling (Rafael Wysocki)
- Drop a redundant check from pm_runtime_force_resume() and rearrange
documentation related to __pm_runtime_disable() (Rafael Wysocki)
- Rework the handling of the "smart suspend" driver flag in the PM
core to avoid issues hat may occur when drivers using it depend on
some other drivers and clean up the related PM core code (Rafael
Wysocki, Colin Ian King)
- Fix the handling of devices with the power.direct_complete flag set
if device_suspend() returns an error for at least one device to
avoid situations in which some of them may not be resumed (Rafael
Wysocki)
- Use mutex_trylock() in hibernate_compressor_param_set() to avoid a
possible deadlock that may occur if the "compressor" hibernation
module parameter is accessed during the registration of a new
ieee80211 device (Lizhi Xu)
- Suppress sleeping parent warning in device_pm_add() in the case
when new children are added under a device with the
power.direct_complete set after it has been processed by
device_resume() (Xu Yang)
- Remove needless return in three void functions related to system
wakeup (Zijun Hu)
- Replace deprecated kmap_atomic() with kmap_local_page() in the
hibernation core code (David Reaver)
- Remove unused helper functions related to system sleep (David Alan
Gilbert)
- Clean up s2idle_enter() so it does not lock and unlock CPU offline
in vain and update comments in it (Ulf Hansson)
- Clean up broken white space in dpm_wait_for_children() (Geert
Uytterhoeven)
- Update the cpupower utility to fix lib version-ing in it and memory
leaks in error legs, remove hard-coded values, and implement CPU
physical core querying (Thomas Renninger, John B. Wyatt IV, Shuah
Khan, Yiwei Lin, Zhongqiu Han)"
* tag 'pm-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (139 commits)
PM: sleep: Fix bit masking operation
dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650
dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1
dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names
dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible
cpufreq: Init cpufreq only for present CPUs
PM: sleep: Fix handling devices with direct_complete set on errors
cpuidle: Init cpuidle only for present CPUs
PM: clk: Remove unused pm_clk_remove()
PM: sleep: core: Fix indentation in dpm_wait_for_children()
PM: s2idle: Extend comment in s2idle_enter()
PM: s2idle: Drop redundant locks when entering s2idle
PM: sleep: Remove unused pm_generic_ wrappers
cpufreq: tegra186: Share policy per cluster
cpupower: Make lib versioning scheme more obvious and fix version link
PM: EM: Rework the depends on for CONFIG_ENERGY_MODEL
PM: EM: Address RCU-related sparse warnings
cpupower: Implement CPU physical core querying
pm: cpupower: remove hard-coded topology depth values
pm: cpupower: Fix cmd_monitor() error legs to free cpu_topology
...
|
||
|
Linus Torvalds
|
21e0ff5b10 |
ACPI updates for 6.15-rc1
- Use the str_on_off() helper function instead of hard-coded strings in
the ACPI power resources handling code (Thorsten Blum).
- Add fan speed reporting for ACPI fans that have _FST, but otherwise
do not support the entire ACPI 4 fan interface (Joshua Grisham).
- Fix a stale comment regarding trip points in acpi_thermal_add() that
diverged from the commented code after removing _CRT evaluation from
acpi_thermal_get_trip_points() (xueqin Luo).
- Make ACPI button driver also subscribe to system events (Mario
Limonciello).
- Use the str_yes_no() helper function instead of hard-coded strings in
the ACPI backlight (video) driver (Thorsten Blum).
- Add a missing header file include to the x86 arch CPPC code (Mario
Limonciello).
- Rework the sysfs attributes implementation in the ACPI platform-profile
driver and improve the unregistration code in it (Nathan Chancellor,
Kurt Borja).
- Prevent the ACPI HED driver from being built as a module and change
its initcall level to subsys_initcall to avoid initialization ordering
issues related to it (Xiaofei Tan).
- Update a maintainer email address in the ACPI PMIC entry in
MAINTAINERS (Mika Westerberg).
- Address a GCC 15's -Wunterminated-string-initialization warning in
the core PNP subsystem code and remove some dead code from it (Kees
Cook, David Alan Gilbert).
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Merge tag 'acpi-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"From the functional perspective, the most significant changes here are
the ACPI fan driver update allowing it to handle fans with
fine-grained state checking supported, but without fine-grained
control, and the ACPI button driver update making it subscribe to
system event notifications (in addition to device notifications) which
on some systems is requisite for waking up the system from sleep.
The rest is fixes and cleanups including removal of some dead code.
Specifics:
- Use the str_on_off() helper function instead of hard-coded strings
in the ACPI power resources handling code (Thorsten Blum)
- Add fan speed reporting for ACPI fans that have _FST, but otherwise
do not support the entire ACPI 4 fan interface (Joshua Grisham)
- Fix a stale comment regarding trip points in acpi_thermal_add()
that diverged from the commented code after removing _CRT
evaluation from acpi_thermal_get_trip_points() (xueqin Luo)
- Make ACPI button driver also subscribe to system events (Mario
Limonciello)
- Use the str_yes_no() helper function instead of hard-coded strings
in the ACPI backlight (video) driver (Thorsten Blum)
- Add a missing header file include to the x86 arch CPPC code (Mario
Limonciello)
- Rework the sysfs attributes implementation in the ACPI
platform-profile driver and improve the unregistration code in it
(Nathan Chancellor, Kurt Borja)
- Prevent the ACPI HED driver from being built as a module and change
its initcall level to subsys_initcall to avoid initialization
ordering issues related to it (Xiaofei Tan)
- Update a maintainer email address in the ACPI PMIC entry in
MAINTAINERS (Mika Westerberg)
- Address a GCC 15's -Wunterminated-string-initialization warning in
the core PNP subsystem code and remove some dead code from it (Kees
Cook, David Alan Gilbert)"
* tag 'acpi-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PNP: Expand length of fixup id string
PNP: Remove prehistoric deadcode
ACPI: button: Install notifier for system events as well
ACPI: fan: Add fan speed reporting for fans with only _FST
ACPI: HED: Always initialize before evged
x86/ACPI: CPPC: Add missing include
ACPI: video: Use str_yes_no() helper in acpi_video_bus_add()
ACPI: platform_profile: Improve platform_profile_unregister()
ACPI: platform-profile: Fix CFI violation when accessing sysfs files
ACPI: power: Use str_on_off() helper function
ACPI: thermal: Fix stale comment regarding trip points
MAINTAINERS: Use my kernel.org address for ACPI PMIC work
|
||
|
Linus Torvalds
|
906174776c |
- Some preparatory work to convert the mitigations machinery to mitigating
attack vectors instead of single vulnerabilities - Untangle and remove a now unneeded X86_FEATURE_USE_IBPB flag - Add support for a Zen5-specific SRSO mitigation - Cleanups and minor improvements -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmfixS0ACgkQEsHwGGHe VUpi1xAAgvH2u8Eo8ibT5dABQpD65w3oQiykO+9aDpObG9w9beDVGlld8DJE61Rz 6tcE0Clp2H/tMcCbn8zXIJ92TQ3wIX/85uZwLi1VEM1Tx7A6VtAbPv8WKfZE3FCX 9v92HRKnK3ql+A2ZR+oyy+/8RedUmia7y7/bXH1H7Zf2uozoKkmq5cQnwfq5iU4A qNiKuvSlQwjZ8Zz6Ax1ugHUkE4R7mlKh8rccLXl4+mVr63/lkPHSY3OFTjcYf4HW Ir92N86Spfo0/l0vsOOsWoYKmoaiVP7ouJh7YbKR3B0BGN0pt2MT476mehkEs427 m4J6XhRKhIrsYmzEkLvvpsg12zO4/PKk8BEYNS7YPYlRaOwjV4ivyFS2aY6e55rh yUHyo9s+16f/Mp+/fNFXll3mdMxYBioPWh3M191nJkdfyKMrtf0MdKPRibaJB8wH yMF4D1gMx+hFbs0/VOS6dtqD9DKW7VgPg0LW+RysfhnLTuFFb5iBcH6Of7l7Z/Ca vVK+JxrhB1EDVI1+MKnESKPF9c6j3DRa2xrQHi/XYje1TGqnQ1v4CmsEObYBuJDN 9M9t4QLzNuA/DA5tS7cxxtQ3YUthuJjPLcO4EVHOCvnqCAxkzp0i3dVMUr+YISl+ 2yFqaZdTt8s8FjTI21LOyuloCo30ZLlzaorFa0lp2cIyYup+1vg= =btX/ -----END PGP SIGNATURE----- Merge tag 'x86_bugs_for_v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 speculation mitigation updates from Borislav Petkov: - Some preparatory work to convert the mitigations machinery to mitigating attack vectors instead of single vulnerabilities - Untangle and remove a now unneeded X86_FEATURE_USE_IBPB flag - Add support for a Zen5-specific SRSO mitigation - Cleanups and minor improvements * tag 'x86_bugs_for_v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Make spectre user default depend on MITIGATION_SPECTRE_V2 x86/bugs: Use the cpu_smt_possible() helper instead of open-coded code x86/bugs: Add AUTO mitigations for mds/taa/mmio/rfds x86/bugs: Relocate mds/taa/mmio/rfds defines x86/bugs: Add X86_BUG_SPECTRE_V2_USER x86/bugs: Remove X86_FEATURE_USE_IBPB KVM: nVMX: Always use IBPB to properly virtualize IBRS x86/bugs: Use a static branch to guard IBPB on vCPU switch x86/bugs: Remove the X86_FEATURE_USE_IBPB check in ib_prctl_set() x86/mm: Remove X86_FEATURE_USE_IBPB checks in cond_mitigation() x86/bugs: Move the X86_FEATURE_USE_IBPB check into callers x86/bugs: KVM: Add support for SRSO_MSR_FIX |
||
|
Linus Torvalds
|
2d09a9449e |
arm64 updates for 6.15:
Perf and PMUs:
- Support for the "Rainier" CPU PMU from Arm
- Preparatory driver changes and cleanups that pave the way for BRBE
support
- Support for partial virtualisation of the Apple-M1 PMU
- Support for the second event filter in Arm CSPMU designs
- Minor fixes and cleanups (CMN and DWC PMUs)
- Enable EL2 requirements for FEAT_PMUv3p9
Power, CPU topology:
- Support for AMUv1-based average CPU frequency
- Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It adds
a generic topology_is_primary_thread() function overridden by x86 and
powerpc
New(ish) features:
- MOPS (memcpy/memset) support for the uaccess routines
Security/confidential compute:
- Fix the DMA address for devices used in Realms with Arm CCA. The
CCA architecture uses the address bit to differentiate between shared
and private addresses
- Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
default
Memory management clean-ups:
- Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs
- Some minor page table accessor clean-ups
- PIE/POE (permission indirection/overlay) helpers clean-up
Kselftests:
- MTE: skip hugetlb tests if MTE is not supported on such mappings and
user correct naming for sync/async tag checking modes
Miscellaneous:
- Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
request)
- Sysreg updates for new register fields
- CPU type info for some Qualcomm Kryo cores
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Nothing major this time around.
Apart from the usual perf/PMU updates, some page table cleanups, the
notable features are average CPU frequency based on the AMUv1
counters, CONFIG_HOTPLUG_SMT and MOPS instructions (memcpy/memset) in
the uaccess routines.
Perf and PMUs:
- Support for the 'Rainier' CPU PMU from Arm
- Preparatory driver changes and cleanups that pave the way for BRBE
support
- Support for partial virtualisation of the Apple-M1 PMU
- Support for the second event filter in Arm CSPMU designs
- Minor fixes and cleanups (CMN and DWC PMUs)
- Enable EL2 requirements for FEAT_PMUv3p9
Power, CPU topology:
- Support for AMUv1-based average CPU frequency
- Run-time SMT control wired up for arm64 (CONFIG_HOTPLUG_SMT). It
adds a generic topology_is_primary_thread() function overridden by
x86 and powerpc
New(ish) features:
- MOPS (memcpy/memset) support for the uaccess routines
Security/confidential compute:
- Fix the DMA address for devices used in Realms with Arm CCA. The
CCA architecture uses the address bit to differentiate between
shared and private addresses
- Spectre-BHB: assume CPUs Linux doesn't know about vulnerable by
default
Memory management clean-ups:
- Drop the P*D_TABLE_BIT definition in preparation for 128-bit PTEs
- Some minor page table accessor clean-ups
- PIE/POE (permission indirection/overlay) helpers clean-up
Kselftests:
- MTE: skip hugetlb tests if MTE is not supported on such mappings
and user correct naming for sync/async tag checking modes
Miscellaneous:
- Add a PKEY_UNRESTRICTED definition as 0 to uapi (toolchain people
request)
- Sysreg updates for new register fields
- CPU type info for some Qualcomm Kryo cores"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (72 commits)
arm64: mm: Don't use %pK through printk
perf/arm_cspmu: Fix missing io.h include
arm64: errata: Add newer ARM cores to the spectre_bhb_loop_affected() lists
arm64: cputype: Add MIDR_CORTEX_A76AE
arm64: errata: Add KRYO 2XX/3XX/4XX silver cores to Spectre BHB safe list
arm64: errata: Assume that unknown CPUs _are_ vulnerable to Spectre BHB
arm64: errata: Add QCOM_KRYO_4XX_GOLD to the spectre_bhb_k24_list
arm64/sysreg: Enforce whole word match for open/close tokens
arm64/sysreg: Fix unbalanced closing block
arm64: Kconfig: Enable HOTPLUG_SMT
arm64: topology: Support SMT control on ACPI based system
arch_topology: Support SMT control for OF based system
cpu/SMT: Provide a default topology_is_primary_thread()
arm64/mm: Define PTDESC_ORDER
perf/arm_cspmu: Add PMEVFILT2R support
perf/arm_cspmu: Generalise event filtering
perf/arm_cspmu: Move register definitons to header
arm64/kernel: Always use level 2 or higher for early mappings
arm64/mm: Drop PXD_TABLE_BIT
arm64/mm: Check pmd_table() in pmd_trans_huge()
...
|
||
|
Denis Mukhin
|
3181424aea |
x86/early_printk: Add support for MMIO-based UARTs
During the bring-up of an x86 board, the kernel was crashing before
reaching the platform's console driver because of a bug in the firmware,
leaving no trace of the boot progress.
The only available method to debug the kernel boot process was via the
platform's MMIO-based UART, as the board lacked an I/O port-based UART,
PCI UART, or functional video output.
Then it turned out that earlyprintk= does not have a knob to configure
the MMIO-mapped UART.
Extend the early printk facility to support platform MMIO-based UARTs
on x86 systems, enabling debugging during the system bring-up phase.
The command line syntax to enable platform MMIO-based UART is:
earlyprintk=mmio,membase[,{nocfg|baudrate}][,keep]
Note, the change does not integrate MMIO-based UART support to:
arch/x86/boot/early_serial_console.c
Also, update kernel parameters documentation with the new syntax and
add the missing 'nocfg' setting to the PCI serial cards description.
Signed-off-by: Denis Mukhin <dmukhin@ford.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20250324-earlyprintk-v3-1-aee7421dc469@ford.com
|
||
|
Linus Torvalds
|
e34c38057a |
[ Merge note: this pull request depends on you having merged
two locking commits in the locking tree,
part of the locking-core-2025-03-22 pull request. ]
x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid='
(Brendan Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and
related cleanups (Brian Gerst)
- Convert the stackprotector canary to a regular percpu
variable (Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB instruction
(Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation
(Kirill A. Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems,
to support PCI BAR space beyond the 10TiB region
(CONFIG_PCI_P2PDMA=y) (Balbir Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Bootup:
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0
(Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI headers
(Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
(Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking instructions
(Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
(Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel,
Artem Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst,
Dan Carpenter, Dr. David Alan Gilbert, H. Peter Anvin,
Ingo Molnar, Josh Poimboeuf, Kevin Brodsky, Mike Rapoport,
Lukas Bulwahn, Maciej Wieczor-Retman, Max Grobecker,
Patryk Wlazlyn, Pawan Gupta, Peter Zijlstra,
Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak,
Vitaly Kuznetsov, Xin Li, liuye.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
"x86 CPU features support:
- Generate the <asm/cpufeaturemasks.h> header based on build config
(H. Peter Anvin, Xin Li)
- x86 CPUID parsing updates and fixes (Ahmed S. Darwish)
- Introduce the 'setcpuid=' boot parameter (Brendan Jackman)
- Enable modifying CPU bug flags with '{clear,set}puid=' (Brendan
Jackman)
- Utilize CPU-type for CPU matching (Pawan Gupta)
- Warn about unmet CPU feature dependencies (Sohil Mehta)
- Prepare for new Intel Family numbers (Sohil Mehta)
Percpu code:
- Standardize & reorganize the x86 percpu layout and related cleanups
(Brian Gerst)
- Convert the stackprotector canary to a regular percpu variable
(Brian Gerst)
- Add a percpu subsection for cache hot data (Brian Gerst)
- Unify __pcpu_op{1,2}_N() macros to __pcpu_op_N() (Uros Bizjak)
- Construct __percpu_seg_override from __percpu_seg (Uros Bizjak)
MM:
- Add support for broadcast TLB invalidation using AMD's INVLPGB
instruction (Rik van Riel)
- Rework ROX cache to avoid writable copy (Mike Rapoport)
- PAT: restore large ROX pages after fragmentation (Kirill A.
Shutemov, Mike Rapoport)
- Make memremap(MEMREMAP_WB) map memory as encrypted by default
(Kirill A. Shutemov)
- Robustify page table initialization (Kirill A. Shutemov)
- Fix flush_tlb_range() when used for zapping normal PMDs (Jann Horn)
- Clear _PAGE_DIRTY for kernel mappings when we clear _PAGE_RW
(Matthew Wilcox)
KASLR:
- x86/kaslr: Reduce KASLR entropy on most x86 systems, to support PCI
BAR space beyond the 10TiB region (CONFIG_PCI_P2PDMA=y) (Balbir
Singh)
CPU bugs:
- Implement FineIBT-BHI mitigation (Peter Zijlstra)
- speculation: Simplify and make CALL_NOSPEC consistent (Pawan Gupta)
- speculation: Add a conditional CS prefix to CALL_NOSPEC (Pawan
Gupta)
- RFDS: Exclude P-only parts from the RFDS affected list (Pawan
Gupta)
System calls:
- Break up entry/common.c (Brian Gerst)
- Move sysctls into arch/x86 (Joel Granados)
Intel LAM support updates: (Maciej Wieczor-Retman)
- selftests/lam: Move cpu_has_la57() to use cpuinfo flag
- selftests/lam: Skip test if LAM is disabled
- selftests/lam: Test get_user() LAM pointer handling
AMD SMN access updates:
- Add SMN offsets to exclusive region access (Mario Limonciello)
- Add support for debugfs access to SMN registers (Mario Limonciello)
- Have HSMP use SMN through AMD_NODE (Yazen Ghannam)
Power management updates: (Patryk Wlazlyn)
- Allow calling mwait_play_dead with an arbitrary hint
- ACPI/processor_idle: Add FFH state handling
- intel_idle: Provide the default enter_dead() handler
- Eliminate mwait_play_dead_cpuid_hint()
Build system:
- Raise the minimum GCC version to 8.1 (Brian Gerst)
- Raise the minimum LLVM version to 15.0.0 (Nathan Chancellor)
Kconfig: (Arnd Bergmann)
- Add cmpxchg8b support back to Geode CPUs
- Drop 32-bit "bigsmp" machine support
- Rework CONFIG_GENERIC_CPU compiler flags
- Drop configuration options for early 64-bit CPUs
- Remove CONFIG_HIGHMEM64G support
- Drop CONFIG_SWIOTLB for PAE
- Drop support for CONFIG_HIGHPTE
- Document CONFIG_X86_INTEL_MID as 64-bit-only
- Remove old STA2x11 support
- Only allow CONFIG_EISA for 32-bit
Headers:
- Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI and non-UAPI
headers (Thomas Huth)
Assembly code & machine code patching:
- x86/alternatives: Simplify alternative_call() interface (Josh
Poimboeuf)
- x86/alternatives: Simplify callthunk patching (Peter Zijlstra)
- KVM: VMX: Use named operands in inline asm (Josh Poimboeuf)
- x86/hyperv: Use named operands in inline asm (Josh Poimboeuf)
- x86/traps: Cleanup and robustify decode_bug() (Peter Zijlstra)
- x86/kexec: Merge x86_32 and x86_64 code using macros from
<asm/asm.h> (Uros Bizjak)
- Use named operands in inline asm (Uros Bizjak)
- Improve performance by using asm_inline() for atomic locking
instructions (Uros Bizjak)
Earlyprintk:
- Harden early_serial (Peter Zijlstra)
NMI handler:
- Add an emergency handler in nmi_desc & use it in
nmi_shootdown_cpus() (Waiman Long)
Miscellaneous fixes and cleanups:
- by Ahmed S. Darwish, Andy Shevchenko, Ard Biesheuvel, Artem
Bityutskiy, Borislav Petkov, Brendan Jackman, Brian Gerst, Dan
Carpenter, Dr. David Alan Gilbert, H. Peter Anvin, Ingo Molnar,
Josh Poimboeuf, Kevin Brodsky, Mike Rapoport, Lukas Bulwahn, Maciej
Wieczor-Retman, Max Grobecker, Patryk Wlazlyn, Pawan Gupta, Peter
Zijlstra, Philip Redkin, Qasim Ijaz, Rik van Riel, Thomas Gleixner,
Thorsten Blum, Tom Lendacky, Tony Luck, Uros Bizjak, Vitaly
Kuznetsov, Xin Li, liuye"
* tag 'x86-core-2025-03-22' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (211 commits)
zstd: Increase DYNAMIC_BMI2 GCC version cutoff from 4.8 to 11.0 to work around compiler segfault
x86/asm: Make asm export of __ref_stack_chk_guard unconditional
x86/mm: Only do broadcast flush from reclaim if pages were unmapped
perf/x86/intel, x86/cpu: Replace Pentium 4 model checks with VFM ones
perf/x86/intel, x86/cpu: Simplify Intel PMU initialization
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in non-UAPI headers
x86/headers: Replace __ASSEMBLY__ with __ASSEMBLER__ in UAPI headers
x86/locking/atomic: Improve performance by using asm_inline() for atomic locking instructions
x86/asm: Use asm_inline() instead of asm() in clwb()
x86/asm: Use CLFLUSHOPT and CLWB mnemonics in <asm/special_insns.h>
x86/hweight: Use asm_inline() instead of asm()
x86/hweight: Use ASM_CALL_CONSTRAINT in inline asm()
x86/hweight: Use named operands in inline asm()
x86/stackprotector/64: Only export __ref_stack_chk_guard on CONFIG_SMP
x86/head/64: Avoid Clang < 17 stack protector in startup code
x86/kexec: Merge x86_32 and x86_64 code using macros from <asm/asm.h>
x86/runtime-const: Add the RUNTIME_CONST_PTR assembly macro
x86/cpu/intel: Limit the non-architectural constant_tsc model checks
x86/mm/pat: Replace Intel x86_model checks with VFM ones
x86/cpu/intel: Fix fast string initialization for extended Families
...
|
||
|
Linus Torvalds
|
3ba7dfb8da |
RCU pull request for v6.15
This pull request contains the following branches:
docs.2025.02.04a:
- Add broken-timing possibility to stallwarn.rst.
- Improve discussion of this_cpu_ptr(), add raw_cpu_ptr().
- Document self-propagating callbacks.
- Point call_srcu() to call_rcu() for detailed memory ordering.
- Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header.
- Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text.
- Remove references to old grace-period-wait primitives.
srcu.2025.02.05a:
- Introduce srcu_read_{un,}lock_fast(), which is similar to
srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock at the
cost of calling synchronize_rcu() in synchronize_srcu(). Moreover, by
returning the percpu offset of the counter at srcu_read_lock_fast()
time, srcu_read_unlock_fast() can save extra pointer dereferencing,
which makes it faster than srcu_read_{un,}lock_lite().
srcu_read_{un,}lock_fast() are intended to replace
rcu_read_{un,}lock_trace() if possible.
torture.2025.02.05a:
- Add get_torture_init_jiffies() to return the start time of the test.
- Add a test_boost_holdoff module parameter to allow delaying boosting
tests when building rcutorture as built-in.
- Add grace period sequence number logging at the beginning and end of
failure/close-call results.
- Switch to hexadecimal for the expedited grace period sequence number
in the rcu_exp_grace_period trace point.
- Make cur_ops->format_gp_seqs take buffer length.
- Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool.
- Complain when invalid SRCU reader_flavor is specified.
- Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
uses atomics even when percpu ops are NMI safe, and use the Kconfig
for SRCU lockdep testing.
misc.2025.03.04a:
- Split rcu_report_exp_cpu_mult() mask parameter and use for tracing.
- Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes().
- Fix get_state_synchronize_rcu_full() GP-start detection.
- Move RCU Tasks self-tests to core_initcall().
- Print segment lengths in show_rcu_nocb_gp_state().
- Make RCU watch ct_kernel_exit_state() warning.
- Flush console log from kernel_power_off().
- rcutorture: Allow a negative value for nfakewriters.
- rcu: Update TREE05.boot to test normal synchronize_rcu().
- rcu: Use _full() API to debug synchronize_rcu().
lazypreempt.2025.03.04a: Make RCU handle PREEMPT_LAZY better:
- Fix header guard for rcu_all_qs().
- rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY.
- Update __cond_resched comment about RCU quiescent states.
- Handle unstable rdp in rcu_read_unlock_strict().
- Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y.
- osnoise: Provide quiescent states.
- Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
combination.
- Limit PREEMPT_RCU configurations.
- Make rcutorture senario TREE07 and senario TREE10 use PREEMPT_LAZY=y.
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Merge tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Boqun Feng:
"Documentation:
- Add broken-timing possibility to stallwarn.rst
- Improve discussion of this_cpu_ptr(), add raw_cpu_ptr()
- Document self-propagating callbacks
- Point call_srcu() to call_rcu() for detailed memory ordering
- Add CONFIG_RCU_LAZY delays to call_rcu() kernel-doc header
- Clarify RCU_LAZY and RCU_LAZY_DEFAULT_OFF help text
- Remove references to old grace-period-wait primitives
srcu:
- Introduce srcu_read_{un,}lock_fast(), which is similar to
srcu_read_{un,}lock_lite(): avoid smp_mb()s in lock and unlock
at the cost of calling synchronize_rcu() in synchronize_srcu()
Moreover, by returning the percpu offset of the counter at
srcu_read_lock_fast() time, srcu_read_unlock_fast() can avoid
extra pointer dereferencing, which makes it faster than
srcu_read_{un,}lock_lite()
srcu_read_{un,}lock_fast() are intended to replace
rcu_read_{un,}lock_trace() if possible
RCU torture:
- Add get_torture_init_jiffies() to return the start time of the test
- Add a test_boost_holdoff module parameter to allow delaying
boosting tests when building rcutorture as built-in
- Add grace period sequence number logging at the beginning and end
of failure/close-call results
- Switch to hexadecimal for the expedited grace period sequence
number in the rcu_exp_grace_period trace point
- Make cur_ops->format_gp_seqs take buffer length
- Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
- Complain when invalid SRCU reader_flavor is specified
- Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing, which forces SRCU
uses atomics even when percpu ops are NMI safe, and use the Kconfig
for SRCU lockdep testing
Misc:
- Split rcu_report_exp_cpu_mult() mask parameter and use for tracing
- Remove READ_ONCE() for rdp->gpwrap access in __note_gp_changes()
- Fix get_state_synchronize_rcu_full() GP-start detection
- Move RCU Tasks self-tests to core_initcall()
- Print segment lengths in show_rcu_nocb_gp_state()
- Make RCU watch ct_kernel_exit_state() warning
- Flush console log from kernel_power_off()
- rcutorture: Allow a negative value for nfakewriters
- rcu: Update TREE05.boot to test normal synchronize_rcu()
- rcu: Use _full() API to debug synchronize_rcu()
Make RCU handle PREEMPT_LAZY better:
- Fix header guard for rcu_all_qs()
- rcu: Rename PREEMPT_AUTO to PREEMPT_LAZY
- Update __cond_resched comment about RCU quiescent states
- Handle unstable rdp in rcu_read_unlock_strict()
- Handle quiescent states for PREEMPT_RCU=n, PREEMPT_COUNT=y
- osnoise: Provide quiescent states
- Adjust rcutorture with possible PREEMPT_RCU=n && PREEMPT_COUNT=y
combination
- Limit PREEMPT_RCU configurations
- Make rcutorture senario TREE07 and senario TREE10 use
PREEMPT_LAZY=y"
* tag 'rcu-next-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (59 commits)
rcutorture: Make scenario TREE07 build CONFIG_PREEMPT_LAZY=y
rcutorture: Make scenario TREE10 build CONFIG_PREEMPT_LAZY=y
rcu: limit PREEMPT_RCU configurations
rcutorture: Update ->extendables check for lazy preemption
rcutorture: Update rcutorture_one_extend_check() for lazy preemption
osnoise: provide quiescent states
rcu: Use _full() API to debug synchronize_rcu()
rcu: Update TREE05.boot to test normal synchronize_rcu()
rcutorture: Allow a negative value for nfakewriters
Flush console log from kernel_power_off()
context_tracking: Make RCU watch ct_kernel_exit_state() warning
rcu/nocb: Print segment lengths in show_rcu_nocb_gp_state()
rcu-tasks: Move RCU Tasks self-tests to core_initcall()
rcu: Fix get_state_synchronize_rcu_full() GP-start detection
torture: Make SRCU lockdep testing use srcu_read_lock_nmisafe()
srcu: Add FORCE_NEED_SRCU_NMI_SAFE Kconfig for testing
rcutorture: Complain when invalid SRCU reader_flavor is specified
rcutorture: Move RCU_TORTURE_TEST_{CHK_RDR_STATE,LOG_CPU} to bool
rcutorture: Make cur_ops->format_gp_seqs take buffer length
rcutorture: Add ftrace-compatible timestamp to GP# failure/close-call output
...
|
||
|
Linus Torvalds
|
f81c2b8150 |
It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9. Much of
this is preparatory to replacing the ancient Perl scripts/kernel-doc
horror with a slightly less horrifying Python implementation, expected
for 6.16.
- Update the minimum Sphinx required to 3.4.3, allowing us to remove a
bunch of older compatibility code.
- Rework and improve the generation of the ABI documentation.
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that work will
still get to you via docs-next
- Try to standardize the format for indicating a developer's affiliation in
commit tags.
- Clarify the TAB's role in CoC enforcement actions.
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission.
Plus lots of other typo fixes and updates.
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Merge tag 'docs-6.15' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It has been a reasonably busy cycle for docs...
- Significant changes throughout the tree to bring Python code up to
current standards and raise the minimum Python required to 3.9
Much of this is preparatory to replacing the ancient Perl
scripts/kernel-doc horror with a slightly less horrifying Python
implementation, expected for 6.16
- Update the minimum Sphinx required to 3.4.3, allowing us to remove
a bunch of older compatibility code
- Rework and improve the generation of the ABI documentation
(All of the above done by Mauro)
- Lots of translation updates. Alex Shi and Yanteng Si are taking on
responsibility for the Chinese translations going forward; that
work will still get to you via docs-next
- Try to standardize the format for indicating a developer's
affiliation in commit tags
- Clarify the TAB's role in CoC enforcement actions
- Try to spell out the rules for when a commit tag can name another
developer without their explicit permission
Plus lots of other typo fixes and updates"
* tag 'docs-6.15' of git://git.lwn.net/linux: (98 commits)
docs/zh_CN: fix spelling mistake
docs/Chinese: change the disclaimer words
docs/zh_CN: Add snp-tdx-threat-model index Chinese translation
docs: driver-api: firmware: clarify userspace requirements
docs: clarify rules wrt tagging other people
docs: Remove outdated highuid.rst documentation
Documentation: dma-buf: heaps: Add heap name definitions
docs/.../submit-checklist: Use Documentation/admin-guide/abi.rst for cross-ref of README
docs: Correct installation instruction
Documentation: kcsan: fix "Plain Accesses and Data Races" URL in kcsan.rst
Documentation/CoC: Spell out the TAB role in enforcement decisions
Documentation: ocxl.rst: Update consortium site
scripts: get_feat.pl: substitute s390x with s390
scripts/kernel-doc: drop dead code for Wcontents_before_sections
scripts/kernel-doc: don't add not needed new lines
docs: driver-api/infiniband.rst: fix Kerneldoc markup
drivers: firewire: firewire-cdev.h: fix identation on a kernel-doc markup
drivers: media: intel-ipu3.h: fix identation on a kernel-doc markup
include/asm-generic/io.h: fix kerneldoc markup
Docs/arch/arm64: Fix spelling in amu.rst
...
|
||
|
Linus Torvalds
|
94dc216ad8 |
cgroup: Changes for v6.15
- Add deprecation info messages to cgroup1-only features. - rstat updates including a bug fix and breaking up a critical section to reduce interrupt latency impact. - Other misc and doc updates. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZ9xO2g4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGQz4AQDeWKmngRsnddEMkqOV1ArwXSr+8xUQrvCBx0RL vcjOQQEAusGCTeGXWJ96kw+N9BXvGwFsfSeoxjOqAnvrBS1EgAc= =WvJg -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Add deprecation info messages to cgroup1-only features - rstat updates including a bug fix and breaking up a critical section to reduce interrupt latency impact - Other misc and doc updates * tag 'cgroup-for-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: rstat: Cleanup flushing functions and locking cgroup/rstat: avoid disabling irqs for O(num_cpu) mm: Fix a build breakage in memcontrol-v1.c blk-cgroup: Simplify policy files registration cgroup: Update file naming comment cgroup: Add deprecation message to legacy freezer controller mm: Add transformation message for per-memcg swappiness RFC cgroup/cpuset-v1: Add deprecation messages to sched_relax_domain_level cgroup/cpuset-v1: Add deprecation messages to memory_migrate cgroup/cpuset-v1: Add deprecation messages to mem_exclusive and mem_hardwall cgroup: Print message when /proc/cgroups is read on v2-only system cgroup/blkio: Add deprecation messages to reset_stats cgroup/cpuset-v1: Add deprecation messages to memory_spread_page and memory_spread_slab cgroup/cpuset-v1: Add deprecation messages to sched_load_balance and memory_pressure_enabled cgroup, docs: Be explicit about independence of RT_GROUP_SCHED and non-cpu controllers cgroup/rstat: Fix forceidle time in cpu.stat cgroup/misc: Remove unused misc_cg_res_total_usage cgroup/cpuset: Move procfs cpuset attribute under cgroup-v1.c cgroup: update comment about dropping cgroup kn refs |
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|
Linus Torvalds
|
fc13a78e1f |
hardening updates for v6.15-rc1
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile time
(Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for it
- Introduce __nonstring_array for silencing future GCC 15 warnings
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Merge tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
"As usual, it's scattered changes all over. Patches touching things
outside of our traditional areas in the tree have been Acked by
maintainers or were trivial changes:
- loadpin: remove unsupported MODULE_COMPRESS_NONE (Arulpandiyan
Vadivel)
- samples/check-exec: Fix script name (Mickaël Salaün)
- yama: remove needless locking in yama_task_prctl() (Oleg Nesterov)
- lib/string_choices: Sort by function name (R Sundar)
- hardening: Allow default HARDENED_USERCOPY to be set at compile
time (Mel Gorman)
- uaccess: Split out compile-time checks into ucopysize.h
- kbuild: clang: Support building UM with SUBARCH=i386
- x86: Enable i386 FORTIFY_SOURCE on Clang 16+
- ubsan/overflow: Rework integer overflow sanitizer option
- Add missing __nonstring annotations for callers of
memtostr*()/strtomem*()
- Add __must_be_noncstr() and have memtostr*()/strtomem*() check for
it
- Introduce __nonstring_array for silencing future GCC 15 warnings"
* tag 'hardening-v6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (26 commits)
compiler_types: Introduce __nonstring_array
hardening: Enable i386 FORTIFY_SOURCE on Clang 16+
x86/build: Remove -ffreestanding on i386 with GCC
ubsan/overflow: Enable ignorelist parsing and add type filter
ubsan/overflow: Enable pattern exclusions
ubsan/overflow: Rework integer overflow sanitizer option to turn on everything
samples/check-exec: Fix script name
yama: don't abuse rcu_read_lock/get_task_struct in yama_task_prctl()
kbuild: clang: Support building UM with SUBARCH=i386
loadpin: remove MODULE_COMPRESS_NONE as it is no longer supported
lib/string_choices: Rearrange functions in sorted order
string.h: Validate memtostr*()/strtomem*() arguments more carefully
compiler.h: Introduce __must_be_noncstr()
nilfs2: Mark on-disk strings as nonstring
uapi: stddef.h: Introduce __kernel_nonstring
x86/tdx: Mark message.bytes as nonstring
string: kunit: Mark nonstring test strings as __nonstring
scsi: qla2xxx: Mark device strings as nonstring
scsi: mpt3sas: Mark device strings as nonstring
scsi: mpi3mr: Mark device strings as nonstring
...
|
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Rafael J. Wysocki
|
7a9072d859 |
Merge branch 'pm-cpuidle'
Merge cpuidle updates for 6.15-rc5, including a menu governor update that is reported to improve some benchmark results quite significantly: - Update the handling of the most recent idle intervals in the menu cpuidle governor to prevent useful information from being discarded by it in some cases and improve the prediction accuracy (Rafael Wysocki). - Make it possible to tell the intel_idle driver to ignore its built-in table of idle states for the given processor, clean up the handling of auto-demotion disabling on Baytrail and Cherrytrail chips in it, and update its MAINTAINERS entry (David Arcari, Artem Bityutskiy, Rafael Wysocki). - Make some cpuidle drivers use for_each_present_cpu() instead of for_each_possible_cpu() during initialization to avoid issues occurring when nosmp or maxcpus=0 are used (Jacky Bai). * pm-cpuidle: cpuidle: Init cpuidle only for present CPUs cpuidle: intel_idle: Update MAINTAINERS intel_idle: introduce 'no_native' module parameter cpuidle: menu: Update documentation after get_typical_interval() changes cpuidle: menu: Avoid discarding useful information cpuidle: menu: Eliminate outliers on both ends of the sample set cpuidle: menu: Tweak threshold use in get_typical_interval() cpuidle: menu: Use one loop for average and variance computations cpuidle: menu: Drop a redundant local variable intel_idle: clean up BYT/CHT auto demotion disable |
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Rafael J. Wysocki
|
1774be7cfc |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.15-rc1: - Manage sysfs attributes and boost frequencies efficiently from cpufreq core to reduce boilerplate code from drivers (Viresh Kumar). - Minor cleanups to cpufreq drivers (Aaron Kling, Benjamin Schneider, Dhananjay Ugwekar, Imran Shaik, and zuoqian). - Migrate some cpufreq drivers to using for_each_present_cpu() (Jacky Bai). - cpufreq-qcom-hw DT binding fixes (Krzysztof Kozlowski). - Use str_enable_disable() helper in cpufreq_online() (Lifeng Zheng). - Optimize the amd-pstate driver to avoid cases where call paths end up calling the same writes multiple times and needlessly caching variables through code reorganization, locking overhaul and tracing adjustments (Mario Limonciello, Dhananjay Ugwekar). - Make it possible to avoid enabling capacity-aware scheduling (CAS) in the intel_pstate driver and relocate a check for out-of-band (OOB) platform handling in it to make it detect OOB before checking HWP availability (Rafael Wysocki). - Fix dbs_update() to avoid inadvertent conversions of negative integer values to unsigned int which causes CPU frequency selection to be inaccurate in some cases when the "conservative" cpufreq governor is in use (Jie Zhan). * pm-cpufreq: (91 commits) dt-bindings: cpufreq: cpufreq-qcom-hw: Narrow properties on SDX75, SA8775p and SM8650 dt-bindings: cpufreq: cpufreq-qcom-hw: Drop redundant minItems:1 dt-bindings: cpufreq: cpufreq-qcom-hw: Add missing constraint for interrupt-names dt-bindings: cpufreq: cpufreq-qcom-hw: Add QCS8300 compatible cpufreq: Init cpufreq only for present CPUs cpufreq: tegra186: Share policy per cluster cpufreq/amd-pstate: Drop actions in amd_pstate_epp_cpu_offline() cpufreq/amd-pstate: Stop caching EPP cpufreq/amd-pstate: Rework CPPC enabling cpufreq/amd-pstate: Drop debug statements for policy setting cpufreq/amd-pstate: Update cppc_req_cached for shared mem EPP writes cpufreq/amd-pstate: Move all EPP tracing into *_update_perf and *_set_epp functions cpufreq/amd-pstate: Cache CPPC request in shared mem case too cpufreq/amd-pstate: Replace all AMD_CPPC_* macros with masks cpufreq/amd-pstate-ut: Adjust variable scope cpufreq/amd-pstate-ut: Run on all of the correct CPUs cpufreq/amd-pstate-ut: Drop SUCCESS and FAIL enums cpufreq/amd-pstate-ut: Allow lowest nonlinear and lowest to be the same cpufreq/amd-pstate-ut: Use _free macro to free put policy cpufreq/amd-pstate: Drop `cppc_cap1_cached` ... |
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Hao Jia
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4c8bc7c4e3 |
cgroup: docs: add pswpin and pswpout items in cgroup v2 doc
The commit |
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Hao Jia
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e452872b40 |
mm: vmscan: split proactive reclaim statistics from direct reclaim statistics
Patch series "Adding Proactive Memory Reclaim Statistics". These two patches are related to proactive memory reclaim. Patch 1 Split proactive reclaim statistics from direct reclaim counters and introduces new counters: pgsteal_proactive, pgdemote_proactive, and pgscan_proactive. Patch 2 Adds pswpin and pswpout items to the cgroup-v2 documentation. This patch (of 2): In proactive memory reclaim scenarios, it is necessary to accurately track proactive reclaim statistics to dynamically adjust the frequency and amount of memory being reclaimed proactively. Currently, proactive reclaim is included in direct reclaim statistics, which can make these direct reclaim statistics misleading. Therefore, separate proactive reclaim memory from the direct reclaim counters by introducing new counters: pgsteal_proactive, pgdemote_proactive, and pgscan_proactive, to avoid confusion with direct reclaim. Link: https://lkml.kernel.org/r/20250318075833.90615-1-jiahao.kernel@gmail.com Link: https://lkml.kernel.org/r/20250318075833.90615-2-jiahao.kernel@gmail.com Signed-off-by: Hao Jia <jiahao1@lixiang.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Donghyeok Choe
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c1aa3daa51 |
printk/panic: Add option to allow non-panic CPUs to write to the ring buffer.
Commit |
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Andrew Jones
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9fe58530a8
|
Documentation/kernel-parameters: Add riscv unaligned speed parameters
Document riscv parameters used to select scalar and vector unaligned access speeds. Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20250304120014.143628-18-ajones@ventanamicro.com Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> |
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Pawan Gupta
|
722fa0dba7 |
x86/rfds: Exclude P-only parts from the RFDS affected list
The affected CPU table (cpu_vuln_blacklist) marks Alderlake and Raptorlake P-only parts affected by RFDS. This is not true because only E-cores are affected by RFDS. With the current family/model matching it is not possible to differentiate the unaffected parts, as the affected and unaffected hybrid variants have the same model number. Add a cpu-type match as well for such parts so as to exclude P-only parts being marked as affected. Note, family/model and cpu-type enumeration could be inaccurate in virtualized environments. In a guest affected status is decided by RFDS_NO and RFDS_CLEAR bits exposed by VMMs. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/r/20250311-add-cpu-type-v8-5-e8514dcaaff2@linux.intel.com |
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Ingo Molnar
|
89771319e0 |
Linux 6.14-rc7
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmfXVtUeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGN/sH/i5423Gt/z51gDjA s4v5Z7GaBJ9zOGBahn2RWFe72zytTqKrEJmMnGfguirs0atD1DtQj4WAP7iFKP+e WyO663X6HF7i5y37ja0Yd4PZc31hwtqzKH8LjBf8f8tTy8UsEVqumdi5A4sS9KTM qm4kTyyVEY9D/s7oRY8ywjDlRJtO6nT0aKMp4kAqNEbrNUYbilT/a0hgXcgSmPyB uIjmjL2fZfutxGI5LgfbaSHCa1ElmhvTvivOMpaAmZSGCRVHCKGgT0CTNnHyn/7C dB145JkRO4ZOUqirCdO4PE/23id3ajq9fcixJGBzAv7c45y+B3JZ1r2kAfKalE8/ qrOKLys= =8r7a -----END PGP SIGNATURE----- Merge tag 'v6.14-rc7' into x86/core, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Johannes Weiner
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e3aa7df331 |
mm: page_alloc: defrag_mode
The page allocator groups requests by migratetype to stave off
fragmentation. However, in practice this is routinely defeated by the
fact that it gives up *before* invoking reclaim and compaction - which may
well produce suitable pages. As a result, fragmentation of physical
memory is a common ongoing process in many load scenarios.
Fragmentation deteriorates compaction's ability to produce huge pages.
Depending on the lifetime of the fragmenting allocations, those effects
can be long-lasting or even permanent, requiring drastic measures like
forcible idle states or even reboots as the only reliable ways to recover
the address space for THP production.
In a kernel build test with supplemental THP pressure, the THP allocation
rate steadily declines over 15 runs:
thp_fault_alloc
61988
56474
57258
50187
52388
55409
52925
47648
43669
40621
36077
41721
36685
34641
33215
This is a hurdle in adopting THP in any environment where hosts are shared
between multiple overlapping workloads (cloud environments), and rarely
experience true idle periods. To make THP a reliable and predictable
optimization, there needs to be a stronger guarantee to avoid such
fragmentation.
Introduce defrag_mode. When enabled, reclaim/compaction is invoked to its
full extent *before* falling back. Specifically, ALLOC_NOFRAGMENT is
enforced on the allocator fastpath and the reclaiming slowpath.
For now, fallbacks are permitted to avert OOMs. There is a plan to add
defrag_mode=2 to prefer OOMs over fragmentation, but this requires
additional prep work in compaction and the reserve management to make it
ready for all possible allocation contexts.
The following test results are from a kernel build with periodic bursts of
THP allocations, over 15 runs:
vanilla defrag_mode=1
@claimer[unmovable]: 189 103
@claimer[movable]: 92 103
@claimer[reclaimable]: 207 61
@pollute[unmovable from movable]: 25 0
@pollute[unmovable from reclaimable]: 28 0
@pollute[movable from unmovable]: 38835 0
@pollute[movable from reclaimable]: 147136 0
@pollute[reclaimable from unmovable]: 178 0
@pollute[reclaimable from movable]: 33 0
@steal[unmovable from movable]: 11 0
@steal[unmovable from reclaimable]: 5 0
@steal[reclaimable from unmovable]: 107 0
@steal[reclaimable from movable]: 90 0
@steal[movable from reclaimable]: 354 0
@steal[movable from unmovable]: 130 0
Both types of polluting fallbacks are eliminated in this workload.
Interestingly, whole block conversions are reduced as well. This is
because once a block is claimed for a type, its empty space remains
available for future allocations, instead of being padded with fallbacks;
this allows the native type to group up instead of spreading out to new
blocks. The assumption in the allocator has been that pollution from
movable allocations is less harmful than from other types, since they can
be reclaimed or migrated out should the space be needed. However, since
fallbacks occur *before* reclaim/compaction is invoked, movable pollution
will still cause non-movable allocations to spread out and claim more
blocks.
Without fragmentation, THP rates hold steady with defrag_mode=1:
thp_fault_alloc
32478
20725
45045
32130
14018
21711
40791
29134
34458
45381
28305
17265
22584
28454
30850
While the downward trend is eliminated, the keen reader will of course
notice that the baseline rate is much smaller than the vanilla kernel's to
begin with. This is due to deficiencies in how reclaim and compaction are
currently driven: ALLOC_NOFRAGMENT increases the extent to which smaller
allocations are competing with THPs for pageblocks, while making no effort
themselves to reclaim or compact beyond their own request size. This
effect already exists with the current usage of ALLOC_NOFRAGMENT, but is
amplified by defrag_mode insisting on whole block stealing much more
strongly.
Subsequent patches will address defrag_mode reclaim strategy to raise the
THP success baseline above the vanilla kernel.
Link: https://lkml.kernel.org/r/20250313210647.1314586-4-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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|
SeongJae Park
|
114b480877 |
Docs/admin-guide/mm/damon/usage: update for {core,ops}_filters directories
Document {core,ops}_filters directories on usage document.
Link: https://lkml.kernel.org/r/20250305222733.59089-9-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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David Hildenbrand
|
749492229e |
mm: stop maintaining the per-page mapcount of large folios (CONFIG_NO_PAGE_MAPCOUNT)
Everything is in place to stop using the per-page mapcounts in large
folios: the mapcount of tail pages will always be logically 0 (-1 value),
just like it currently is for hugetlb folios already, and the page
mapcount of the head page is either 0 (-1 value) or contains a page type
(e.g., hugetlb).
Maintaining _nr_pages_mapped without per-page mapcounts is impossible, so
that one also has to go with CONFIG_NO_PAGE_MAPCOUNT.
There are two remaining implications:
(1) Per-node, per-cgroup and per-lruvec stats of "NR_ANON_MAPPED"
("mapped anonymous memory") and "NR_FILE_MAPPED"
("mapped file memory"):
As soon as any page of the folio is mapped -- folio_mapped() -- we
now account the complete folio as mapped. Once the last page is
unmapped -- !folio_mapped() -- we account the complete folio as
unmapped.
This implies that ...
* "AnonPages" and "Mapped" in /proc/meminfo and
/sys/devices/system/node/*/meminfo
* cgroup v2: "anon" and "file_mapped" in "memory.stat" and
"memory.numa_stat"
* cgroup v1: "rss" and "mapped_file" in "memory.stat" and
"memory.numa_stat
... can now appear higher than before. But note that these folios do
consume that memory, simply not all pages are actually currently
mapped.
It's worth nothing that other accounting in the kernel (esp. cgroup
charging on allocation) is not affected by this change.
[why oh why is "anon" called "rss" in cgroup v1]
(2) Detecting partial mappings
Detecting whether anon THPs are partially mapped gets a bit more
unreliable. As long as a single MM maps such a large folio
("exclusively mapped"), we can reliably detect it. Especially before
fork() / after a short-lived child process quit, we will detect
partial mappings reliably, which is the common case.
In essence, if the average per-page mapcount in an anon THP is < 1,
we know for sure that we have a partial mapping.
However, as soon as multiple MMs are involved, we might miss detecting
partial mappings: this might be relevant with long-lived child
processes. If we have a fully-mapped anon folio before fork(), once
our child processes and our parent all unmap (zap/COW) the same pages
(but not the complete folio), we might not detect the partial mapping.
However, once the child processes quit we would detect the partial
mapping.
How relevant this case is in practice remains to be seen.
Swapout/migration will likely mitigate this.
In the future, RMAP walkers could check for that for that case
(e.g., when collecting access bits during reclaim) and simply flag
them for deferred-splitting.
Link: https://lkml.kernel.org/r/20250303163014.1128035-21-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andy Lutomirks^H^Hski <luto@kernel.org>
Cc: Borislav Betkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcow (Oracle) <willy@infradead.org>
Cc: Michal Koutn <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: tejun heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
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|
David Hildenbrand
|
eb16876971 |
fs/proc/task_mmu: remove per-page mapcount dependency for PM_MMAP_EXCLUSIVE (CONFIG_NO_PAGE_MAPCOUNT)
Let's implement an alternative when per-page mapcounts in large folios are no longer maintained -- soon with CONFIG_NO_PAGE_MAPCOUNT. PM_MMAP_EXCLUSIVE will now be set if folio_likely_mapped_shared() is true -- when the folio is considered "mapped shared", including when it once was "mapped shared" but no longer is, as documented. This might result in and under-indication of "exclusively mapped", which is considered better than over-indicating it: under-estimating the USS (Unique Set Size) is better than over-estimating it. As an alternative, we could simply remove that flag with CONFIG_NO_PAGE_MAPCOUNT completely, but there might be value to it. So, let's keep it like that and document the behavior. Link: https://lkml.kernel.org/r/20250303163014.1128035-18-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Andy Lutomirks^H^Hski <luto@kernel.org> Cc: Borislav Betkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: Michal Koutn <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: tejun heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
David Hildenbrand
|
ae4192b769 |
fs/proc/page: remove per-page mapcount dependency for /proc/kpagecount (CONFIG_NO_PAGE_MAPCOUNT)
Let's implement an alternative when per-page mapcounts in large folios are no longer maintained -- soon with CONFIG_NO_PAGE_MAPCOUNT. For large folios, we'll return the per-page average mapcount within the folio, whereby we round to the closest integer when calculating the average: however, we'll always return at least 1 if the folio is mapped. So assuming a folio with 512 pages, the average would be: * 0 if not pages are mapped * 1 if there are 1 .. 767 per-page mappings * 2 if there are 767 .. 1279 per-page mappings ... For hugetlb folios and for large folios that are fully mapped into all address spaces, there is no change. We'll make use of this helper in other context next. As an alternative, we could simply return 0 for non-hugetlb large folios, or disable this legacy interface with CONFIG_NO_PAGE_MAPCOUNT. But the information exposed by this interface can still be valuable, and frequently we deal with fully-mapped large folios where the average corresponds to the actual page mapcount. So we'll leave it like this for now and document the new behavior. Note: this interface is likely not very relevant for performance. If ever required, we could try doing a rather expensive rmap walk to collect precisely how often this folio page is mapped. Link: https://lkml.kernel.org/r/20250303163014.1128035-17-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Andy Lutomirks^H^Hski <luto@kernel.org> Cc: Borislav Betkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: Michal Koutn <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: tejun heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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kth
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fba374f328 |
docs: Remove outdated highuid.rst documentation
The highuid.rst document describes a transition that is outdated and no longer relevant. Additionally, it references filesystems (ncpfs and smbfs), which have been removed or replaced. Suggested-by: Matthew Wilcox <willy@infradead.org> Signed-off-by: Kang Taeho <kangtaeho2456@gmail.com> Link: https://lore.kernel.org/r/20250313145650.278346-1-kangtaeho2456@gmail.com Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Adam Simonelli
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2f1f7787b6 |
printk: Add an option to allow ttynull to be a default console device
The new option is CONFIG_NULL_TTY_DEFAULT_CONSOLE. if enabled, and CONFIG_VT is disabled, ttynull will become the default primary console device. ttynull will be the only console device usually with this option enabled. Some architectures do call add_preferred_console() which may add another console though. Motivation: Many distributions ship with CONFIG_VT enabled. On tested desktop hardware if CONFIG_VT is disabled, the default console device falls back to /dev/ttyS0 instead of /dev/tty. This could cause issues in user space, and hardware problems: 1. The user space issues include the case where /dev/ttyS0 is disconnected, and the TCGETS ioctl, which some user space libraries use as a probe to determine if a file is a tty, is called on /dev/console and fails. Programs that call isatty() on /dev/console and get an incorrect false value may skip expected logging to /dev/console. 2. The hardware issues include the case if a user has a science instrument or other device connected to the /dev/ttyS0 port, and they were to upgrade to a kernel that is disabling the CONFIG_VT option, kernel logs will then be sent to the device connected to /dev/ttyS0 unless they edit their kernel command line manually. The new CONFIG_NULL_TTY_DEFAULT_CONSOLE option will give users and distribution maintainers an option to avoid this. Disabling CONFIG_VT and enabling CONFIG_NULL_TTY_DEFAULT_CONSOLE will ensure the default kernel console behavior is not dependent on hardware configuration by default, and avoid unexpected new behavior on devices connected to the /dev/ttyS0 serial port. Reviewed-by: Petr Mladek <pmladek@suse.com> Tested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Adam Simonelli <adamsimonelli@gmail.com> Link: https://lore.kernel.org/r/20250314160749.3286153-2-adamsimonelli@gmail.com [pmladek@suse.com: Fixed indentation of the commit message.] Signed-off-by: Petr Mladek <pmladek@suse.com> |
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Thomas Prescher
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71f7456889 |
mm: hugetlb: add hugetlb_alloc_threads cmdline option
Add a command line option that enables control of how many threads should be used to allocate huge pages. [akpm@linux-foundation.org: tidy up a comment] Link: https://lkml.kernel.org/r/20250227-hugepage-parameter-v2-2-7db8c6dc0453@cyberus-technology.de Signed-off-by: Thomas Prescher <thomas.prescher@cyberus-technology.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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b243d666d1 |
Docs/admin-guide/mm/damon/usage: add intervals_goal directory on the hierarchy
Document DAMON sysfs interface usage for DAMON sampling and aggregation intervals auto-tuning. Link: https://lkml.kernel.org/r/20250303221726.484227-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ahmad Fatoum
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e016173f65 |
reboot: add support for configuring emergency hardware protection action
We currently leave the decision of whether to shutdown or reboot to protect hardware in an emergency situation to the individual drivers. This works out in some cases, where the driver detecting the critical failure has inside knowledge: It binds to the system management controller for example or is guided by hardware description that defines what to do. In the general case, however, the driver detecting the issue can't know what the appropriate course of action is and shouldn't be dictating the policy of dealing with it. Therefore, add a global hw_protection toggle that allows the user to specify whether shutdown or reboot should be the default action when the driver doesn't set policy. This introduces no functional change yet as hw_protection_trigger() has no callers, but these will be added in subsequent commits. [arnd@arndb.de: hide unused hw_protection_attr] Link: https://lkml.kernel.org/r/20250224141849.1546019-1-arnd@kernel.org Link: https://lkml.kernel.org/r/20250217-hw_protection-reboot-v3-7-e1c09b090c0c@pengutronix.de Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Cc: Benson Leung <bleung@chromium.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Fabio Estevam <festevam@denx.de> Cc: Guenter Roeck <groeck@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Liam Girdwood <lgirdwood@gmail.com> Cc: Lukasz Luba <lukasz.luba@arm.com> Cc: Mark Brown <broonie@kernel.org> Cc: Matteo Croce <teknoraver@meta.com> Cc: Matti Vaittinen <mazziesaccount@gmail.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Rob Herring (Arm) <robh@kernel.org> Cc: Rui Zhang <rui.zhang@intel.com> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: "Serge E. Hallyn" <serge@hallyn.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Lorenzo Stoakes
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8e2f2aeb8b |
fs/proc/task_mmu: add guard region bit to pagemap
Patch series "fs/proc/task_mmu: add guard region bit to pagemap". Currently there is no means of determining whether a given page in a mapping range is designated a guard region (as installed via madvise() using the MADV_GUARD_INSTALL flag). This is generally not an issue, but in some instances users may wish to determine whether this is the case. This series adds this ability via /proc/$pid/pagemap, updates the documentation and adds a self test to assert that this functions correctly. This patch (of 2): Currently there is no means by which users can determine whether a given page in memory is in fact a guard region, that is having had the MADV_GUARD_INSTALL madvise() flag applied to it. This is intentional, as to provide this information in VMA metadata would contradict the intent of the feature (providing a means to change fault behaviour at a page table level rather than a VMA level), and would require VMA metadata operations to scan page tables, which is unacceptable. In many cases, users have no need to reflect and determine what regions have been designated guard regions, as it is the user who has established them in the first place. But in some instances, such as monitoring software, or software that relies upon being able to ascertain the nature of mappings within a remote process for instance, it becomes useful to be able to determine which pages have the guard region marker applied. This patch makes use of an unused pagemap bit (58) to provide this information. This patch updates the documentation at the same time as making the change such that the implementation of the feature and the documentation of it are tied together. Link: https://lkml.kernel.org/r/cover.1740139449.git.lorenzo.stoakes@oracle.com Link: https://lkml.kernel.org/r/521d99c08b975fb06a1e7201e971cc24d68196d1.1740139449.git.lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Jann Horn <jannh@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Matthew Wilcow (Oracle) <willy@infradead.org> Cc: "Paul E . McKenney" <paulmck@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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4127e13c93 |
zram: remove max_comp_streams device attr
max_comp_streams device attribute has been defunct since May 2016 when zram switched to per-CPU compression streams, remove it. Link: https://lkml.kernel.org/r/20250303022425.285971-5-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Hillf Danton <hdanton@sina.com> Cc: Kairui Song <ryncsn@gmail.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Yosry Ahmed <yosry.ahmed@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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f866cfcec2 |
mm/hugetlb: add hugetlb_cma_only cmdline option
Add an option to force hugetlb gigantic pages to be allocated using CMA only (if hugetlb_cma is enabled). This avoids a fallback to allocation from the rest of system memory if the CMA allocation fails. This makes the size of hugetlb_cma a hard upper boundary for gigantic hugetlb page allocations. This is useful because, with a large CMA area, the kernel's unmovable allocations will have less room to work with and it is undesirable for new hugetlb gigantic page allocations to be done from that remaining area. It will eat in to the space available for unmovable allocations, leading to unwanted system behavior (OOMs because the kernel fails to do unmovable allocations). So, with this enabled, an administrator can force a hard upper bound for runtime gigantic page allocations, and have more predictable system behavior. Link: https://lkml.kernel.org/r/20250228182928.2645936-26-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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5b47c02967 |
mm/hugetlb: convert cmdline parameters from setup to early
Convert the cmdline parameters (hugepagesz, hugepages, default_hugepagesz and hugetlb_free_vmemmap) to early parameters. Since parse_early_param might run before MMU setups on some platforms (powerpc), validation of huge page sizes as specified in command line parameters would fail. So instead, for the hstate-related values, just record the them and parse them on demand, from hugetlb_bootmem_alloc. The allocation of hugetlb bootmem pages is now done in hugetlb_bootmem_alloc, which is called explicitly at the start of mm_core_init(). core_initcall would be too late, as that happens with memblock already torn down. This change will allow earlier allocation and initialization of bootmem hugetlb pages later on. No functional change intended. Link: https://lkml.kernel.org/r/20250228182928.2645936-8-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Frank van der Linden
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c009da4258 |
mm, cma: support multiple contiguous ranges, if requested
Currently, CMA manages one range of physically contiguous memory. Creation of larger CMA areas with hugetlb_cma may run in to gaps in physical memory, so that they are not able to allocate that contiguous physical range from memblock when creating the CMA area. This can happen, for example, on an AMD system with > 1TB of memory, where there will be a gap just below the 1TB (40bit DMA) line. If you have set aside most of memory for potential hugetlb CMA allocation, cma_declare_contiguous_nid will fail. hugetlb_cma doesn't need the entire area to be one physically contiguous range. It just cares about being able to get physically contiguous chunks of a certain size (e.g. 1G), and it is fine to have the CMA area backed by multiple physical ranges, as long as it gets 1G contiguous allocations. Multi-range support is implemented by introducing an array of ranges, instead of just one big one. Each range has its own bitmap. Effectively, the allocate and release operations work as before, just per-range. So, instead of going through one large bitmap, they now go through a number of smaller ones. The maximum number of supported ranges is 8, as defined in CMA_MAX_RANGES. Since some current users of CMA expect a CMA area to just use one physically contiguous range, only allow for multiple ranges if a new interface, cma_declare_contiguous_nid_multi, is used. The other interfaces will work like before, creating only CMA areas with 1 range. cma_declare_contiguous_nid_multi works as follows, mimicking the default "bottom-up, above 4G" reservation approach: 0) Try cma_declare_contiguous_nid, which will use only one region. If this succeeds, return. This makes sure that for all the cases that currently work, the behavior remains unchanged even if the caller switches from cma_declare_contiguous_nid to cma_declare_contiguous_nid_multi. 1) Select the largest free memblock ranges above 4G, with a maximum number of CMA_MAX_RANGES. 2) If we did not find at most CMA_MAX_RANGES that add up to the total size requested, return -ENOMEM. 3) Sort the selected ranges by base address. 4) Reserve them bottom-up until we get what we wanted. Link: https://lkml.kernel.org/r/20250228182928.2645936-3-fvdl@google.com Signed-off-by: Frank van der Linden <fvdl@google.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Dan Carpenter <dan.carpenter@linaro.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Madhavan Srinivasan <maddy@linux.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Muchun Song <muchun.song@linux.dev> Cc: Oscar Salvador <osalvador@suse.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Roman Gushchin (Cruise) <roman.gushchin@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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0f28583b28 |
Docs/damon: move DAMOS filter type names and meaning to design doc
DAMON sysfs usage doc is describing DAMOS filter type names and their meanings in short. The design doc is providing the short meaning and detailed descriptions, too. This is unnecessary duplicates and confuses where to document new DAMOS filter types and features. Move the details from usage to design doc. Link: https://lkml.kernel.org/r/20250218223708.53437-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Usama Arif
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4ddb209268 |
Docs/admin-guide/mm/damon/usage: document hugepage_size filter type
This includes both the 'hugepage_size' filter type and the min/max files used to decide range of sizes to filter on. Link: https://lkml.kernel.org/r/20250211124437.278873-5-usamaarif642@gmail.com Signed-off-by: Usama Arif <usamaarif642@gmail.com> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Yosry Ahmed
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6df8bae8e8 |
mm: zbud: remove zbud
The zbud compressed pages allocator is rarely used, most users use zsmalloc. zbud consumes much more memory (only stores 1 or 2 compressed pages per physical page). The only advantage of zbud is a marginal performance improvement that by no means justify the memory overhead. Historically, zsmalloc had significantly worse latency than zbud and z3fold but offered better memory savings. This is no longer the case as shown by a simple recent analysis [1]. In a kernel build test on tmpfs in a limited cgroup, zbud 2-3% less time than zsmalloc, but at the cost of using ~32% more memory (1.5G vs 1.13G). The tradeoff does not make sense for zbud in any practical scenario. The only alleged advantage of zbud is not having the dependency on CONFIG_MMU, but CONFIG_SWAP already depends on CONFIG_MMU anyway, and zbud is only used by zswap. Remove zbud after z3fold's removal, leaving zsmalloc as the one and only zpool allocator. Leave the removal of the zpool API (and its associated config options) to a followup cleanup after no more allocators show up. Deprecating zbud for a few cycles before removing it was initially proposed [2], like z3fold was marked as deprecated for 2 cycles [3]. However, Johannes rightfully pointed out that the 2 cycles is too short for most downstream consumers, and z3fold was deprecated first only as a courtesy anyway. [1]https://lore.kernel.org/lkml/CAJD7tkbRF6od-2x_L8-A1QL3=2Ww13sCj4S3i4bNndqF+3+_Vg@mail.gmail.com/ [2]https://lore.kernel.org/lkml/Z5gdnSX5Lv-nfjQL@google.com/ [3]https://lore.kernel.org/lkml/20240904233343.933462-1-yosryahmed@google.com/ Link: https://lkml.kernel.org/r/20250129180633.3501650-3-yosry.ahmed@linux.dev Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Nhat Pham <nphamcs@gmail.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Christian Borntraeger <borntraeger@linux.ibm.com> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Seth Jennings <sjenning@redhat.com> Cc: Sven Schnelle <svens@linux.ibm.com> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: WANG Xuerui <kernel@xen0n.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baokun Li
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62c3da1eac |
ext4: update the descriptions of data_err=abort and data_err=ignore
We now print error messages in ext4_end_bio() when page writeback encounters an error. If data_err=abort is set, the journal will also be aborted in a kworker. This means that we now check all Buffer I/O in all modes and decide whether to abort the journal based on the data_err option. Therefore, we remove the ordered mode restriction in the descriptions of data_err=abort and data_err=ignore. Signed-off-by: Baokun Li <libaokun1@huawei.com> Reviewed-by: Zhang Yi <yi.zhang@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://patch.msgid.link/20250122110533.4116662-8-libaokun@huaweicloud.com Signed-off-by: Theodore Ts'o <tytso@mit.edu> |
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I Hsin Cheng
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e5e6c016fc |
docs: Correct installation instruction
Ammend missing "install" operation keyword after "apt-get", and fix "build-essentials" to "build-essential". Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250306030708.8133-1-richard120310@gmail.com |
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Dr. David Alan Gilbert
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270247a209 |
PNP: Remove prehistoric deadcode
pnp_remove_card() is currently unused, it has been since it was added in 2003's BKrev: 3e6d3f19XSmESWEZnNEReEJOJW5SOw pnp_unregister_protocol() is currently unused, it has been since it was added in 2002's BKrev: 3df0cf6d4FVUKndhbfxjL7pksw5PGA Remove them, and pnp_remove_card_device() and __pnp_remove_device() which are now no longer used. Signed-off-by: Dr. David Alan Gilbert <linux@treblig.org> Link: https://patch.msgid.link/20250307214936.74504-1-linux@treblig.org Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Michal Koutný
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78f6519ed0 |
cgroup: Add deprecation message to legacy freezer controller
As explained in the commit
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Michal Koutný
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fd4fd0a869 |
mm: Add transformation message for per-memcg swappiness
The concept of per-memcg swappiness has never landed well in memcg for cgroup v2. Add a message to users who use it on v1 hierarchy. Decreased swappiness transforms to memory.swap.max=0 whereas increased swappiness transforms into active memory.reclaim operation. Link: https://lore.kernel.org/r/1577252208-32419-1-git-send-email-teawater@gmail.com/ Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
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9712d38c87 |
Kbuild fixes for v6.14 (3rd)
- Use the specified $(LD) when building userprogs with Clang
- Pass the correct target triple when compile-testing UAPI headers
with Clang
- Fix pacman-pkg build error with KBUILD_OUTPUT
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Merge tag 'kbuild-fixes-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Use the specified $(LD) when building userprogs with Clang
- Pass the correct target triple when compile-testing UAPI headers
with Clang
- Fix pacman-pkg build error with KBUILD_OUTPUT
* tag 'kbuild-fixes-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
kbuild: install-extmod-build: Fix build when specifying KBUILD_OUTPUT
docs: Kconfig: fix defconfig description
kbuild: hdrcheck: fix cross build with clang
kbuild: userprogs: use correct lld when linking through clang
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Jason Gunthorpe
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8eea4e7447 |
taint: Add TAINT_FWCTL
Requesting a fwctl scope of access that includes mutating device debug data will cause the kernel to be tainted. Changing the device operation through things in the debug scope may cause the device to malfunction in undefined ways. This should be reflected in the TAINT flags to help any debuggers understand that something has been done. Link: https://patch.msgid.link/r/4-v5-642aa0c94070+4447f-fwctl_jgg@nvidia.com Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Shannon Nelson <shannon.nelson@amd.com> Tested-by: Dave Jiang <dave.jiang@intel.com> Tested-by: Shannon Nelson <shannon.nelson@amd.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> |
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Shashank Balaji
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c7461cca91 |
cgroup, docs: Be explicit about independence of RT_GROUP_SCHED and non-cpu controllers
The cgroup v2 cpu controller has a limitation that if CONFIG_RT_GROUP_SCHED is enabled, the cpu controller can be enabled only if all the realtime processes are in the root cgroup. The other controllers have no such restriction. They can be used for the resource control of realtime processes irrespective of whether CONFIG_RT_GROUP_SCHED is enabled or not. Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com> Acked-by: Waiman Long <longman@redhat.com> Acked-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Satoru Takeuchi
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dd0b7d4a56 |
docs: Kconfig: fix defconfig description
Commit
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Breno Leitao
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98fdaeb296 |
x86/bugs: Make spectre user default depend on MITIGATION_SPECTRE_V2
Change the default value of spectre v2 in user mode to respect the CONFIG_MITIGATION_SPECTRE_V2 config option. Currently, user mode spectre v2 is set to auto (SPECTRE_V2_USER_CMD_AUTO) by default, even if CONFIG_MITIGATION_SPECTRE_V2 is disabled. Set the spectre_v2 value to auto (SPECTRE_V2_USER_CMD_AUTO) if the Spectre v2 config (CONFIG_MITIGATION_SPECTRE_V2) is enabled, otherwise set the value to none (SPECTRE_V2_USER_CMD_NONE). Important to say the command line argument "spectre_v2_user" overwrites the default value in both cases. When CONFIG_MITIGATION_SPECTRE_V2 is not set, users have the flexibility to opt-in for specific mitigations independently. In this scenario, setting spectre_v2= will not enable spectre_v2_user=, and command line options spectre_v2_user and spectre_v2 are independent when CONFIG_MITIGATION_SPECTRE_V2=n. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: David Kaplan <David.Kaplan@amd.com> Link: https://lore.kernel.org/r/20241031-x86_bugs_last_v2-v2-2-b7ff1dab840e@debian.org |
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Mel Gorman
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d2132f453e |
mm: security: Allow default HARDENED_USERCOPY to be set at compile time
HARDENED_USERCOPY defaults to on if enabled at compile time. Allow hardened_usercopy= default to be set at compile time similar to init_on_alloc= and init_on_free=. The intent is that hardening options that can be disabled at runtime can set their default at build time. Signed-off-by: Mel Gorman <mgorman@techsingularity.net> Link: https://lore.kernel.org/r/20250123221115.19722-3-mgorman@techsingularity.net Signed-off-by: Kees Cook <kees@kernel.org> |
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Arnd Bergmann
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0081fdeccb |
x86/mm: Drop support for CONFIG_HIGHPTE
With the maximum amount of RAM now 4GB, there is very little point to still have PTE pages in highmem. Drop this for simplification. The only other architecture supporting HIGHPTE is 32-bit arm, and once that feature is removed as well, the highpte logic can be dropped from common code as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250226213714.4040853-8-arnd@kernel.org |
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Arnd Bergmann
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bbeb69ce30 |
x86/mm: Remove CONFIG_HIGHMEM64G support
HIGHMEM64G support was added in linux-2.3.25 to support (then) high-end Pentium Pro and Pentium III Xeon servers with more than 4GB of addressing, NUMA and PCI-X slots started appearing. I have found no evidence of this ever being used in regular dual-socket servers or consumer devices, all the users seem obsolete these days, even by i386 standards: - Support for NUMA servers (NUMA-Q, IBM x440, unisys) was already removed ten years ago. - 4+ socket non-NUMA servers based on Intel 450GX/450NX, HP F8 and ServerWorks ServerSet/GrandChampion could theoretically still work with 8GB, but these were exceptionally rare even 20 years ago and would have usually been equipped with than the maximum amount of RAM. - Some SKUs of the Celeron D from 2004 had 64-bit mode fused off but could still work in a Socket 775 mainboard designed for the later Core 2 Duo and 8GB. Apparently most BIOSes at the time only allowed 64-bit CPUs. - The rare Xeon LV "Sossaman" came on a few motherboards with registered DDR2 memory support up to 16GB. - In the early days of x86-64 hardware, there was sometimes the need to run a 32-bit kernel to work around bugs in the hardware drivers, or in the syscall emulation for 32-bit userspace. This likely still works but there should never be a need for this any more. PAE mode is still required to get access to the 'NX' bit on Atom 'Pentium M' and 'Core Duo' CPUs. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250226213714.4040853-6-arnd@kernel.org |
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Arnd Bergmann
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0abf508675 |
x86/smp: Drop 32-bit "bigsmp" machine support
The x86-32 kernel used to support multiple platforms with more than eight logical CPUs, from the 1999-2003 timeframe: Sequent NUMA-Q, IBM Summit, Unisys ES7000 and HP F8. Support for all except the latter was dropped back in 2014, leaving only the F8 based DL740 and DL760 G2 machines in this catery, with up to eight single-core Socket-603 Xeon-MP processors with hyperthreading. Like the already removed machines, the HP F8 servers at the time cost upwards of $100k in typical configurations, but were quickly obsoleted by their 64-bit Socket-604 cousins and the AMD Opteron. Earlier servers with up to 8 Pentium Pro or Xeon processors remain fully supported as they had no hyperthreading. Similarly, the more common 4-socket Xeon-MP machines with hyperthreading using Intel or ServerWorks chipsets continue to work without this, and all the multi-core Xeon processors also run 64-bit kernels. While the "bigsmp" support can also be used to run on later 64-bit machines (including VM guests), it seems best to discourage that and get any remaining users to update their kernels to 64-bit builds on these. As a side-effect of this, there is also no more need to support NUMA configurations on 32-bit x86, as all true 32-bit NUMA platforms are already gone. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20250226213714.4040853-3-arnd@kernel.org |
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Michael Ellerman
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215bd64ada |
docs: Remove reference to removed CBE_CPUFREQ_SPU_GOVERNOR
Remove a reference to CBE_CPUFREQ_SPU_GOVERNOR which has been removed. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com> Link: https://patch.msgid.link/20241218105523.416573-20-mpe@ellerman.id.au |
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Borislav Petkov
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8442df2b49 |
x86/bugs: KVM: Add support for SRSO_MSR_FIX
Add support for CPUID Fn8000_0021_EAX[31] (SRSO_MSR_FIX). If this bit is 1, it indicates that software may use MSR BP_CFG[BpSpecReduce] to mitigate SRSO. Enable BpSpecReduce to mitigate SRSO across guest/host boundaries. Switch back to enabling the bit when virtualization is enabled and to clear the bit when virtualization is disabled because using a MSR slot would clear the bit when the guest is exited and any training the guest has done, would potentially influence the host kernel when execution enters the kernel and hasn't VMRUN the guest yet. More detail on the public thread in Link below. Co-developed-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20241202120416.6054-1-bp@kernel.org |
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Steven Rostedt
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937fbf111a |
tracing: Add traceoff_after_boot option
Sometimes tracing is used to debug issues during the boot process. Since the trace buffer has a limited amount of storage, it may be prudent to disable tracing after the boot is finished, otherwise the critical information may be overwritten. With this option, the main tracing buffer will be turned off at the end of the boot process. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Borislav Petkov <bp@alien8.de> Link: https://lore.kernel.org/20250208103017.48a7ec83@batman.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Rafael J. Wysocki
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de585eac08 |
Merge branch 'cpuidle-menu'
This work had been triggered by a report that commit
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David Arcari
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5e7e39ae15 |
intel_idle: introduce 'no_native' module parameter
Since commit
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Rafael J. Wysocki
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5c35041099 |
cpuidle: menu: Update documentation after get_typical_interval() changes
The documentation of the menu cpuidle governor needs to be updated to match the code behavior after some changes made recently. No functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Christian Loehle <christian.loehle@arm.com> Link: https://patch.msgid.link/4998484.31r3eYUQgx@rjwysocki.net [ rjw: More specific subject, two typos fixed in the changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Kees Cook
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39ec9eaaa1 |
coredump: Only sort VMAs when core_sort_vma sysctl is set
The sorting of VMAs by size in commit |
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Maksimilijan Marosevic
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4dd4eef60f |
Fix typos in admin-guide/gpio
Fixing typos. Signed-off-by: Maksimilijan Marosevic <maksimilijan.marosevic@proton.me> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250218193822.1031-1-maksimilijan.marosevic@proton.me |
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Martin Tůma
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7b8b6bdfab |
media: admin-guide: add mgb4 GMSL modules variants description
Document the (new) mgb4 GMSL modules variants. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> |
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Chandra Pratap
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bf786586ca |
Documentation: media: fix spelling error in the HDMI CEC documentation
Correct the erroneous spelling of 'responsible' in Documentation/admin-guide/media/cec.rst. This fixes all errors pointed out by codespell in the file. Signed-off-by: Chandra Pratap <chandrapratap3519@gmail.com> Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> |
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Mauro Carvalho Chehab
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2234652a73 |
docs: thunderbolt: Allow creating cross-references for ABI
Now that Documentation/ABI is processed by automarkup, let it generate cross-references for the corresponding ABI file. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/a655e770e1446f91088f579b79ae890a19771119.1739254867.git.mchehab+huawei@kernel.org |
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David Reaver
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85df12c599 |
docs: iostats: Rewrite intro, remove outdated formats
The introduction discussed stat file formats for very old kernel versions,
which obscured key information that readers may find useful. Additionally,
the example file contents and the reference to "15 fields" did not account
for the flush fields added in
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Mike Rapoport (Microsoft)
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8b2ee518fc |
Documentation/kernel-parameters: fix typo in description of reserve_mem
The format description of reserve_mem uses [KNG] as units, rather than [KMG]. Fix it. Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250218070845.3769520-1-rppt@kernel.org |
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Rafael J. Wysocki
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7802fce7dc |
cpufreq: intel_pstate: Make it possible to avoid enabling CAS
Capacity-aware scheduling (CAS) is enabled by default by intel_pstate on hybrid systems without SMT, but in some usage scenarios it may be more attractive to place tasks for maximum CPU performance regardless of the extra cost in terms of energy, which is the case on such systems when CAS is not enabled, so introduce a command line option to forbid intel_pstate to enable CAS. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by:Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Link: https://patch.msgid.link/2781262.mvXUDI8C0e@rjwysocki.net |
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Beata Michalska
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fbb4a4759b |
cpufreq: Introduce an optional cpuinfo_avg_freq sysfs entry
Currently the CPUFreq core exposes two sysfs attributes that can be used to query current frequency of a given CPU(s): namely cpuinfo_cur_freq and scaling_cur_freq. Both provide slightly different view on the subject and they do come with their own drawbacks. cpuinfo_cur_freq provides higher precision though at a cost of being rather expensive. Moreover, the information retrieved via this attribute is somewhat short lived as frequency can change at any point of time making it difficult to reason from. scaling_cur_freq, on the other hand, tends to be less accurate but then the actual level of precision (and source of information) varies between architectures making it a bit ambiguous. The new attribute, cpuinfo_avg_freq, is intended to provide more stable, distinct interface, exposing an average frequency of a given CPU(s), as reported by the hardware, over a time frame spanning no more than a few milliseconds. As it requires appropriate hardware support, this interface is optional. Note that under the hood, the new attribute relies on the information provided by arch_freq_get_on_cpu, which, up to this point, has been feeding data for scaling_cur_freq attribute, being the source of ambiguity when it comes to interpretation. This has been amended by restoring the intended behavior for scaling_cur_freq, with a new dedicated config option to maintain status quo for those, who may need it. CC: Jonathan Corbet <corbet@lwn.net> CC: Thomas Gleixner <tglx@linutronix.de> CC: Ingo Molnar <mingo@redhat.com> CC: Borislav Petkov <bp@alien8.de> CC: Dave Hansen <dave.hansen@linux.intel.com> CC: H. Peter Anvin <hpa@zytor.com> CC: Phil Auld <pauld@redhat.com> CC: x86@kernel.org CC: linux-doc@vger.kernel.org Signed-off-by: Beata Michalska <beata.michalska@arm.com> Reviewed-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com> Reviewed-by: Sumit Gupta <sumitg@nvidia.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20250131162439.3843071-3-beata.michalska@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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Mauro Carvalho Chehab
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de61d6515b |
docs: ABI: move README contents to the top
The ABI documentation looks a little bit better if it starts with the contents of the README is placed at the beginning. Move it to the beginning of the ABI chapter. While here, improve the README text and change the title that will be shown at the html/pdf output to be coherent with both ABI file contents and with the generated documentation output. Suggested-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/20250211055809.1898623-1-mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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Mauro Carvalho Chehab
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4bb2dbd757 |
docs: admin-guide/abi: split files from symbols
Now that get_abi has gained support for filtering its output, split ABI symbols from files at the html output. That makes pages smaller and easier to navigate. As an additional bonus, as it will paralelize files handling, it gives an additional performance improvement. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/30e3cf2a8aeef23ca889de60a90f7de141e0dc0e.1739182025.git.mchehab+huawei@kernel.org |
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Mauro Carvalho Chehab
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5d7871d77f |
docs: sphinx/kernel_abi: parse ABI files only once
Right now, the logic parses ABI files on 4 steps, one for each directory. While this is fine in principle, by doing that, not all symbol cross-references will be created. Change the logic to do the parsing only once in order to get a global dictionary to be used when creating ABI cross-references. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/5205c53838b6ea25f4cdd4cc1e3d17c0141e75a6.1739182025.git.mchehab+huawei@kernel.org |
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Mauro Carvalho Chehab
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9d7ec88679 |
docs: use get_abi.py for ABI generation
Use the new script instead of the old one when generating ABI docs. For now, execute it via exec. Future changes will better integrate it by using the class defined there directly. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/e7fcb121c0612c94f6f54f0d742cd3a26a46cd7d.1739182025.git.mchehab+huawei@kernel.org |
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Mauro Carvalho Chehab
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7ceb84b726 |
docs: admin-guide: abi: add SPDX tags to ABI files
Such files are missing SPDX tags containing the licensing information. Add them. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/8c7bfe676e7349ea2d1930bf918d54e27d15ae9e.1739182025.git.mchehab+huawei@kernel.org |
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Joshua Grisham
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56f529ce43
|
platform/x86: samsung-galaxybook: Add samsung-galaxybook driver
Add a new driver for Samsung Galaxy Book series notebook devices with the following features: - Keyboard backlight control - Battery hook for installing power supply extension to add charge control end threshold - Controller for Samsung's performance modes using the platform profile interface - Adds firmware-attributes to control various system features - Handles various hotkeys and notifications Signed-off-by: Joshua Grisham <josh@joshuagrisham.com> Reviewed-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Armin Wolf <W_Armin@gmx.de> Link: https://lore.kernel.org/r/20250201105450.193450-1-josh@joshuagrisham.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Paul E. McKenney
|
b8726c5aa6 |
rcutorture: Add a test_boost_holdoff module parameter
This commit adds a test_boost_holdoff module parameter that tells the RCU priority-boosting tests to wait for the specified number of seconds past the start of the rcutorture test. This can be useful when rcutorture is built into the kernel (as opposed to being modprobed), especially on large systems where early start of RCU priority boosting can delay the boot sequence, which adds a full CPU's worth of load onto the system. This can in turn result in pointless stall warnings. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> |
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Diego Viola
|
e8bcda1217 |
docs: admin-guide: rename GTK+ to GTK
Upstream calls it "GTK" now, see [1] [1] https://mail.gnome.org/archives/gtk-devel-list/2019-February/msg00000.html Signed-off-by: Diego Viola <diego.viola@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250204040444.6299-1-diego.viola@gmail.com |
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Milan Broz
|
8892606045 |
dm-crypt: Document integrity_key_size option.
This patch adds documentation for new option introduced in commit
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Milan Broz
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d8955df383 |
dm-integrity: Document Inline mode for storing integrity data
This patch adds documentation for new 'I' mode for dm-integrity
introduced in commit
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Milan Broz
|
8259648763 |
dm-verity: Document restart_on_error and panic_on_error options
This patch adds documentation for options introduced in commit
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Niklas Cassel
|
deca423213 |
ata: libata-core: Add 'external' to the libata.force kernel parameter
Commit
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|
Linus Torvalds
|
e2ee2e9b15 |
KVM/arm64 updates for 6.14
* New features:
- Support for non-protected guest in protected mode, achieving near
feature parity with the non-protected mode
- Support for the EL2 timers as part of the ongoing NV support
- Allow control of hardware tracing for nVHE/hVHE
* Improvements, fixes and cleanups:
- Massive cleanup of the debug infrastructure, making it a bit less
awkward and definitely easier to maintain. This should pave the
way for further optimisations
- Complete rewrite of pKVM's fixed-feature infrastructure, aligning
it with the rest of KVM and making the code easier to follow
- Large simplification of pKVM's memory protection infrastructure
- Better handling of RES0/RES1 fields for memory-backed system
registers
- Add a workaround for Qualcomm's Snapdragon X CPUs, which suffer
from a pretty nasty timer bug
- Small collection of cleanups and low-impact fixes
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull KVM/arm64 updates from Will Deacon:
"New features:
- Support for non-protected guest in protected mode, achieving near
feature parity with the non-protected mode
- Support for the EL2 timers as part of the ongoing NV support
- Allow control of hardware tracing for nVHE/hVHE
Improvements, fixes and cleanups:
- Massive cleanup of the debug infrastructure, making it a bit less
awkward and definitely easier to maintain. This should pave the way
for further optimisations
- Complete rewrite of pKVM's fixed-feature infrastructure, aligning
it with the rest of KVM and making the code easier to follow
- Large simplification of pKVM's memory protection infrastructure
- Better handling of RES0/RES1 fields for memory-backed system
registers
- Add a workaround for Qualcomm's Snapdragon X CPUs, which suffer
from a pretty nasty timer bug
- Small collection of cleanups and low-impact fixes"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (87 commits)
arm64/sysreg: Get rid of TRFCR_ELx SysregFields
KVM: arm64: nv: Fix doc header layout for timers
KVM: arm64: nv: Apply RESx settings to sysreg reset values
KVM: arm64: nv: Always evaluate HCR_EL2 using sanitising accessors
KVM: arm64: Fix selftests after sysreg field name update
coresight: Pass guest TRFCR value to KVM
KVM: arm64: Support trace filtering for guests
KVM: arm64: coresight: Give TRBE enabled state to KVM
coresight: trbe: Remove redundant disable call
arm64/sysreg/tools: Move TRFCR definitions to sysreg
tools: arm64: Update sysreg.h header files
KVM: arm64: Drop pkvm_mem_transition for host/hyp donations
KVM: arm64: Drop pkvm_mem_transition for host/hyp sharing
KVM: arm64: Drop pkvm_mem_transition for FF-A
KVM: arm64: Explicitly handle BRBE traps as UNDEFINED
KVM: arm64: vgic: Use str_enabled_disabled() in vgic_v3_probe()
arm64: kvm: Introduce nvhe stack size constants
KVM: arm64: Fix nVHE stacktrace VA bits mask
KVM: arm64: Fix FEAT_MTE in pKVM
Documentation: Update the behaviour of "kvm-arm.mode"
...
|
||
|
Linus Torvalds
|
9c5968db9e |
The various patchsets are summarized below. Plus of course many
indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec. - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones. - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest. - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code. - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups. - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code. - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c. - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator. - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading. - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated (https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/). Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED). - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled. - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL. - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests. - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size. - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic. - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated. - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated. - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed. - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic. - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy. - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic. - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions. - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed. - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting. - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface. - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior. - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi "introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors." - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram. - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal. - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance. - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation. - "Cleanup for memfd_create()" from Isaac Manjarres does that thing. - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration. - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices. - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ5a+cwAKCRDdBJ7gKXxA jtoyAP9R58oaOKPJuTizEKKXvh/RpMyD6sYcz/uPpnf+cKTZxQEAqfVznfWlw/Lz uC3KRZYhmd5YrxU4o+qjbzp9XWX/xAE= =Ib2s -----END PGP SIGNATURE----- Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "The various patchsets are summarized below. Plus of course many indivudual patches which are described in their changelogs. - "Allocate and free frozen pages" from Matthew Wilcox reorganizes the page allocator so we end up with the ability to allocate and free zero-refcount pages. So that callers (ie, slab) can avoid a refcount inc & dec - "Support large folios for tmpfs" from Baolin Wang teaches tmpfs to use large folios other than PMD-sized ones - "Fix mm/rodata_test" from Petr Tesarik performs some maintenance and fixes for this small built-in kernel selftest - "mas_anode_descend() related cleanup" from Wei Yang tidies up part of the mapletree code - "mm: fix format issues and param types" from Keren Sun implements a few minor code cleanups - "simplify split calculation" from Wei Yang provides a few fixes and a test for the mapletree code - "mm/vma: make more mmap logic userland testable" from Lorenzo Stoakes continues the work of moving vma-related code into the (relatively) new mm/vma.c - "mm/page_alloc: gfp flags cleanups for alloc_contig_*()" from David Hildenbrand cleans up and rationalizes handling of gfp flags in the page allocator - "readahead: Reintroduce fix for improper RA window sizing" from Jan Kara is a second attempt at fixing a readahead window sizing issue. It should reduce the amount of unnecessary reading - "synchronously scan and reclaim empty user PTE pages" from Qi Zheng addresses an issue where "huge" amounts of pte pagetables are accumulated: https://lore.kernel.org/lkml/cover.1718267194.git.zhengqi.arch@bytedance.com/ Qi's series addresses this windup by synchronously freeing PTE memory within the context of madvise(MADV_DONTNEED) - "selftest/mm: Remove warnings found by adding compiler flags" from Muhammad Usama Anjum fixes some build warnings in the selftests code when optional compiler warnings are enabled - "mm: don't use __GFP_HARDWALL when migrating remote pages" from David Hildenbrand tightens the allocator's observance of __GFP_HARDWALL - "pkeys kselftests improvements" from Kevin Brodsky implements various fixes and cleanups in the MM selftests code, mainly pertaining to the pkeys tests - "mm/damon: add sample modules" from SeongJae Park enhances DAMON to estimate application working set size - "memcg/hugetlb: Rework memcg hugetlb charging" from Joshua Hahn provides some cleanups to memcg's hugetlb charging logic - "mm/swap_cgroup: remove global swap cgroup lock" from Kairui Song removes the global swap cgroup lock. A speedup of 10% for a tmpfs-based kernel build was demonstrated - "zram: split page type read/write handling" from Sergey Senozhatsky has several fixes and cleaups for zram in the area of zram_write_page(). A watchdog softlockup warning was eliminated - "move pagetable_*_dtor() to __tlb_remove_table()" from Kevin Brodsky cleans up the pagetable destructor implementations. A rare use-after-free race is fixed - "mm/debug: introduce and use VM_WARN_ON_VMG()" from Lorenzo Stoakes simplifies and cleans up the debugging code in the VMA merging logic - "Account page tables at all levels" from Kevin Brodsky cleans up and regularizes the pagetable ctor/dtor handling. This results in improvements in accounting accuracy - "mm/damon: replace most damon_callback usages in sysfs with new core functions" from SeongJae Park cleans up and generalizes DAMON's sysfs file interface logic - "mm/damon: enable page level properties based monitoring" from SeongJae Park increases the amount of information which is presented in response to DAMOS actions - "mm/damon: remove DAMON debugfs interface" from SeongJae Park removes DAMON's long-deprecated debugfs interfaces. Thus the migration to sysfs is completed - "mm/hugetlb: Refactor hugetlb allocation resv accounting" from Peter Xu cleans up and generalizes the hugetlb reservation accounting - "mm: alloc_pages_bulk: small API refactor" from Luiz Capitulino removes a never-used feature of the alloc_pages_bulk() interface - "mm/damon: extend DAMOS filters for inclusion" from SeongJae Park extends DAMOS filters to support not only exclusion (rejecting), but also inclusion (allowing) behavior - "Add zpdesc memory descriptor for zswap.zpool" from Alex Shi introduces a new memory descriptor for zswap.zpool that currently overlaps with struct page for now. This is part of the effort to reduce the size of struct page and to enable dynamic allocation of memory descriptors - "mm, swap: rework of swap allocator locks" from Kairui Song redoes and simplifies the swap allocator locking. A speedup of 400% was demonstrated for one workload. As was a 35% reduction for kernel build time with swap-on-zram - "mm: update mips to use do_mmap(), make mmap_region() internal" from Lorenzo Stoakes reworks MIPS's use of mmap_region() so that mmap_region() can be made MM-internal - "mm/mglru: performance optimizations" from Yu Zhao fixes a few MGLRU regressions and otherwise improves MGLRU performance - "Docs/mm/damon: add tuning guide and misc updates" from SeongJae Park updates DAMON documentation - "Cleanup for memfd_create()" from Isaac Manjarres does that thing - "mm: hugetlb+THP folio and migration cleanups" from David Hildenbrand provides various cleanups in the areas of hugetlb folios, THP folios and migration - "Uncached buffered IO" from Jens Axboe implements the new RWF_DONTCACHE flag which provides synchronous dropbehind for pagecache reading and writing. To permite userspace to address issues with massive buildup of useless pagecache when reading/writing fast devices - "selftests/mm: virtual_address_range: Reduce memory" from Thomas Weißschuh fixes and optimizes some of the MM selftests" * tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (321 commits) mm/compaction: fix UBSAN shift-out-of-bounds warning s390/mm: add missing ctor/dtor on page table upgrade kasan: sw_tags: use str_on_off() helper in kasan_init_sw_tags() tools: add VM_WARN_ON_VMG definition mm/damon/core: use str_high_low() helper in damos_wmark_wait_us() seqlock: add missing parameter documentation for raw_seqcount_try_begin() mm/page-writeback: consolidate wb_thresh bumping logic into __wb_calc_thresh mm/page_alloc: remove the incorrect and misleading comment zram: remove zcomp_stream_put() from write_incompressible_page() mm: separate move/undo parts from migrate_pages_batch() mm/kfence: use str_write_read() helper in get_access_type() selftests/mm/mkdirty: fix memory leak in test_uffdio_copy() kasan: hw_tags: Use str_on_off() helper in kasan_init_hw_tags() selftests/mm: virtual_address_range: avoid reading from VM_IO mappings selftests/mm: vm_util: split up /proc/self/smaps parsing selftests/mm: virtual_address_range: unmap chunks after validation selftests/mm: virtual_address_range: mmap() without PROT_WRITE selftests/memfd/memfd_test: fix possible NULL pointer dereference mm: add FGP_DONTCACHE folio creation flag mm: call filemap_fdatawrite_range_kick() after IOCB_DONTCACHE issue ... |
||
|
SeongJae Park
|
d24393450b |
Docs/admin-guide/mm/damon/start: update snapshot example
Two of DAMON user-space tool (damo) commands that are used for examples on DAMON getting started document, namely 'damo show' and 'damo report heats' are deprecated[1,2], and replaced by new commands that provides same functions with unified and simplified user interfaces. Also the example output of 'damo show' is outdated. 'damo schemes' command is not deprecated, but users are recommended to use 'damo start' or 'damo tune' instead. Update the examples to use the replacements, recommendations, and up-to-date output formats. [1] https://git.kernel.org/sj/damo/c/3272e0ac94ecc5e1 [2] https://git.kernel.org/sj/damo/c/da3ec66bbdd9e87d Link: https://lkml.kernel.org/r/20250110185232.54907-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Honggyu Kim <honggyu.kim@sk.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Yunjeong Mun <yunjeong.mun@sk.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
eb14b12c8c |
Docs/admin-guide/mm/damon/usage: fix and add missing DAMOS filter sysfs files on files hierarchy
DAMOS filter directory part of DAMON sysfs files hierarchy on the usage document is wrong. 'memcg_path' file under the directory is wrongly written as 'memcg_id'. Also the directory has 'addr_start', 'addr_end', and 'target_idx' files, but the list is missing those. Fix the wrong name and add missing files. Link: https://lkml.kernel.org/r/20250110185232.54907-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Honggyu Kim <honggyu.kim@sk.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Yunjeong Mun <yunjeong.mun@sk.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
bc6f663add |
Docs/admin-guide/mm/damon/usage: document DAMOS filter 'allow' sysfs file
Update DAMON usage document for the newly added 'allow' sysfs file for DAMOS filters. Link: https://lkml.kernel.org/r/20250109175126.57878-11-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
5bce494764 |
Docs/admin-guide/mm/damon/usage: omit DAMOS filter details in favor of design doc
DAMON usage document is describing some details about DAMOS filters, which are also documented on the design doc. Deduplicate the details in favor of the design doc. Link: https://lkml.kernel.org/r/20250109175126.57878-10-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
38c433bc7e |
Docs/admin-guide/mm/damon/usage: remove DAMON debugfs interface documentation
It's time to remove DAMON debugfs interface, which has deprecated long before in February 2023. Read the cover letter of this patch series for more details. Remove DAMON debugfs interface usage documentation, to avoid confusing users with documents for an already removed thing. Link: https://lkml.kernel.org/r/20250106191941.107070-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Rae Moar <rmoar@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Yanteng Si <si.yanteng@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
f423944bd7 |
Docs/admin-guide/mm/damon/usage: document sz_filtered_out of scheme tried region directories
Document the newly added DAMON sysfs interface file for per-scheme-tried region's bytes that passed the operations set handling DAMOS filters. Link: https://lkml.kernel.org/r/20250106193401.109161-16-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
6bbdb28d88 |
Docs/admin-guide/mm/damon/usage: document sz_ops_filter_passed
Document the new per-scheme operations set layer-handled DAMOS filters passed bytes statistic file on DAMON sysfs interface usage document. Link: https://lkml.kernel.org/r/20250106193401.109161-11-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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SeongJae Park
|
fc4e40937d |
Docs/admin-guide/mm/damon/usage: link damos stat design doc
DAMON sysfs usage document focuses on usage, rather than the detail of the stat metric itself. Add a link to the design document on DAMOS stat usage section. Link: https://lkml.kernel.org/r/20250106193401.109161-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Gregory Price
|
44d46b76c3 |
mm: add build-time option for hotplug memory default online type
Memory hotplug presently auto-onlines memory into a zone the kernel deems
appropriate if CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y.
The memhp_default_state boot param enables runtime config, but it's not
possible to do this at build-time.
Remove CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE, and replace it with
CONFIG_MHP_DEFAULT_ONLINE_TYPE_* choices that sync with the boot param.
Selections:
CONFIG_MHP_DEFAULT_ONLINE_TYPE_OFFLINE
=> mhp_default_online_type = "offline"
Memory will not be onlined automatically.
CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_AUTO
=> mhp_default_online_type = "online"
Memory will be onlined automatically in a zone deemed.
appropriate by the kernel.
CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_KERNEL
=> mhp_default_online_type = "online_kernel"
Memory will be onlined automatically.
The zone may allow kernel data (e.g. ZONE_NORMAL).
CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_MOVABLE
=> mhp_default_online_type = "online_movable"
Memory will be onlined automatically.
The zone will be ZONE_MOVABLE.
Default to CONFIG_MHP_DEFAULT_ONLINE_TYPE_OFFLINE to match the existing
default CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=n behavior.
Existing users of CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE=y should use
CONFIG_MHP_DEFAULT_ONLINE_TYPE_ONLINE_AUTO.
[gourry@gourry.net: update KConfig comments]
Link: https://lkml.kernel.org/r/20241226182918.648799-1-gourry@gourry.net
Link: https://lkml.kernel.org/r/20241220210709.300066-1-gourry@gourry.net
Signed-off-by: Gregory Price <gourry@gourry.net>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Linus Torvalds
|
647d69605c |
pci-v6.14-changes
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Merge tag 'pci-v6.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Batch sizing of multiple BARs while memory decoding is disabled
instead of disabling/enabling decoding for each BAR individually;
this optimizes virtualized environments where toggling decoding
enable is expensive (Alex Williamson)
- Add host bridge .enable_device() and .disable_device() hooks for
bridges that need to configure things like Requester ID to StreamID
mapping when enabling devices (Frank Li)
- Extend struct pci_ecam_ops with .enable_device() and
.disable_device() hooks so drivers that use pci_host_common_probe()
instead of their own .probe() have a way to set the
.enable_device() callbacks (Marc Zyngier)
- Drop 'No bus range found' message so we don't complain when DTs
don't specify the default 'bus-range = <0x00 0xff>' (Bjorn Helgaas)
- Rename the drivers/pci/of_property.c struct of_pci_range to
of_pci_range_entry to avoid confusion with the global of_pci_range
in include/linux/of_address.h (Bjorn Helgaas)
Driver binding:
- Update resource request API documentation to encourage callers to
supply a driver name when requesting resources (Philipp Stanner)
- Export pci_intx_unmanaged() and pcim_intx() (always managed) so
callers of pci_intx() (which is sometimes managed) can explicitly
choose the one they need (Philipp Stanner)
- Convert drivers from pci_intx() to always-managed pcim_intx() or
never-managed pci_intx_unmanaged(): amd_sfh, ata (ahci, ata_piix,
pata_rdc, sata_sil24, sata_sis, sata_uli, sata_vsc), bnx2x, bna,
ntb, qtnfmac, rtsx, tifm_7xx1, vfio, xen-pciback (Philipp Stanner)
- Remove pci_intx_unmanaged() since pci_intx() is now always
unmanaged and pcim_intx() is always managed (Philipp Stanner)
Error handling:
- Unexport pcie_read_tlp_log() to encourage drivers to use PCI core
logging rather than building their own (Ilpo Järvinen)
- Move TLP Log handling to its own file (Ilpo Järvinen)
- Store number of supported End-End TLP Prefixes always so we can
read the correct number of DWORDs from the TLP Prefix Log (Ilpo
Järvinen)
- Read TLP Prefixes in addition to the Header Log in
pcie_read_tlp_log() (Ilpo Järvinen)
- Add pcie_print_tlp_log() to consolidate printing of TLP Header and
Prefix Log (Ilpo Järvinen)
- Quirk the Intel Raptor Lake-P PIO log size to accommodate vendor
BIOSes that don't configure it correctly (Takashi Iwai)
ASPM:
- Save parent L1 PM Substates config so when we restore it along with
an endpoint's config, the parent info isn't junk (Jian-Hong Pan)
Power management:
- Avoid D3 for Root Ports on TUXEDO Sirius Gen1 with old BIOS because
the system can't wake up from suspend (Werner Sembach)
Endpoint framework:
- Destroy the EPC device in devm_pci_epc_destroy(), which previously
didn't call devres_release() (Zijun Hu)
- Finish virtual EP removal in pci_epf_remove_vepf(), which
previously caused a subsequent pci_epf_add_vepf() to fail with
-EBUSY (Zijun Hu)
- Write BAR_MASK before iATU registers in pci_epc_set_bar() so we
don't depend on the BAR_MASK reset value being larger than the
requested BAR size (Niklas Cassel)
- Prevent changing BAR size/flags in pci_epc_set_bar() to prevent
reads from bypassing the iATU if we reduced the BAR size (Niklas
Cassel)
- Verify address alignment when programming iATU so we don't attempt
to write bits that are read-only because of the BAR size, which
could lead to directing accesses to the wrong address (Niklas
Cassel)
- Implement artpec6 pci_epc_features so we can rely on all drivers
supporting it so we can use it in EPC core code (Niklas Cassel)
- Check for BARs of fixed size to prevent endpoint drivers from
trying to change their size (Niklas Cassel)
- Verify that requested BAR size is a power of two when endpoint
driver sets the BAR (Niklas Cassel)
Endpoint framework tests:
- Clear pci-epf-test dma_chan_rx, not dma_chan_tx, after freeing
dma_chan_rx (Mohamed Khalfella)
- Correct the DMA MEMCPY test so it doesn't fail if the Endpoint
supports both DMA_PRIVATE and DMA_MEMCPY (Manivannan Sadhasivam)
- Add pci-epf-test and pci_endpoint_test support for capabilities
(Niklas Cassel)
- Add Endpoint test for consecutive BARs (Niklas Cassel)
- Remove redundant comparison from Endpoint BAR test because a > 1MB
BAR can always be exactly covered by iterating with a 1MB buffer
(Hans Zhang)
- Move and convert PCI Endpoint tests from tools/pci to Kselftests
(Manivannan Sadhasivam)
Apple PCIe controller driver:
- Convert StreamID mapping configuration from a bus notifier to the
.enable_device() and .disable_device() callbacks (Marc Zyngier)
Freescale i.MX6 PCIe controller driver:
- Add Requester ID to StreamID mapping configuration when enabling
devices (Frank Li)
- Use DWC core suspend/resume functions for imx6 (Frank Li)
- Add suspend/resume support for i.MX8MQ, i.MX8Q, and i.MX95 (Richard
Zhu)
- Add DT compatible string 'fsl,imx8q-pcie-ep' and driver support for
i.MX8Q series (i.MX8QM, i.MX8QXP, and i.MX8DXL) Endpoints (Frank
Li)
- Add DT binding for optional i.MX95 Refclk and driver support to
enable it if the platform hasn't enabled it (Richard Zhu)
- Configure PHY based on controller being in Root Complex or Endpoint
mode (Frank Li)
- Rely on dbi2 and iATU base addresses from DT via
dw_pcie_get_resources() instead of hardcoding them (Richard Zhu)
- Deassert apps_reset in imx_pcie_deassert_core_reset() since it is
asserted in imx_pcie_assert_core_reset() (Richard Zhu)
- Add missing reference clock enable or disable logic for IMX6SX,
IMX7D, IMX8MM (Richard Zhu)
- Remove redundant imx7d_pcie_init_phy() since
imx7d_pcie_enable_ref_clk() does the same thing (Richard Zhu)
Freescale Layerscape PCIe controller driver:
- Simplify by using syscon_regmap_lookup_by_phandle_args() instead
of syscon_regmap_lookup_by_phandle() followed by
of_property_read_u32_array() (Krzysztof Kozlowski)
Marvell MVEBU PCIe controller driver:
- Add MODULE_DEVICE_TABLE() to enable module autoloading (Liao Chen)
MediaTek PCIe Gen3 controller driver:
- Use clk_bulk_prepare_enable() instead of separate
clk_bulk_prepare() and clk_bulk_enable() (Lorenzo Bianconi)
- Rearrange reset assert/deassert so they're both done in the
*_power_up() callbacks (Lorenzo Bianconi)
- Document that Airoha EN7581 requires PHY init and power-on before
PHY reset deassert, unlike other MediaTek Gen3 controllers (Lorenzo
Bianconi)
- Move Airoha EN7581 post-reset delay from the en7581 clock .enable()
method to mtk_pcie_en7581_power_up() (Lorenzo Bianconi)
- Sleep instead of delay during Airoha EN7581 power-up, since this is
a non-atomic context (Lorenzo Bianconi)
- Skip PERST# assertion on Airoha EN7581 during probe and
suspend/resume to avoid a hardware defect (Lorenzo Bianconi)
- Enable async probe to reduce system startup time (Douglas Anderson)
Microchip PolarFlare PCIe controller driver:
- Set up the inbound address translation based on whether the
platform allows coherent or non-coherent DMA (Daire McNamara)
- Update DT binding such that platforms are DMA-coherent by default
and must specify 'dma-noncoherent' if needed (Conor Dooley)
Mobiveil PCIe controller driver:
- Convert mobiveil-pcie.txt to YAML and update 'interrupt-names'
and 'reg-names' (Frank Li)
Qualcomm PCIe controller driver:
- Add DT SM8550 and SM8650 optional 'global' interrupt for link
events (Neil Armstrong)
- Add DT 'compatible' strings for IPQ5424 PCIe controller (Manikanta
Mylavarapu)
- If 'global' IRQ is supported for detection of Link Up events, tell
DWC core not to wait for link up (Krishna chaitanya chundru)
Renesas R-Car PCIe controller driver:
- Avoid passing stack buffer as resource name (King Dix)
Rockchip PCIe controller driver:
- Simplify clock and reset handling by using bulk interfaces (Anand
Moon)
- Pass typed rockchip_pcie (not void) pointer to
rockchip_pcie_disable_clocks() (Anand Moon)
- Return -ENOMEM, not success, when pci_epc_mem_alloc_addr() fails
(Dan Carpenter)
Rockchip DesignWare PCIe controller driver:
- Use dll_link_up IRQ to detect Link Up and enumerate devices so
users don't have to manually rescan (Niklas Cassel)
- Tell DWC core not to wait for link up since the 'sys' interrupt is
required and detects Link Up events (Niklas Cassel)
Synopsys DesignWare PCIe controller driver:
- Don't wait for link up in DWC core if driver can detect Link Up
event (Krishna chaitanya chundru)
- Update ICC and OPP votes after Link Up events (Krishna chaitanya
chundru)
- Always stop link in dw_pcie_suspend_noirq(), which is required at
least for i.MX8QM to re-establish link on resume (Richard Zhu)
- Drop racy and unnecessary LTSSM state check before sending
PME_TURN_OFF message in dw_pcie_suspend_noirq() (Richard Zhu)
- Add struct of_pci_range.parent_bus_addr for devices that need their
immediate parent bus address, not the CPU address, e.g., to program
an internal Address Translation Unit (iATU) (Frank Li)
TI DRA7xx PCIe controller driver:
- Simplify by using syscon_regmap_lookup_by_phandle_args() instead of
syscon_regmap_lookup_by_phandle() followed by
of_parse_phandle_with_fixed_args() or of_property_read_u32_index()
(Krzysztof Kozlowski)
Xilinx Versal CPM PCIe controller driver:
- Add DT binding and driver support for Xilinx Versal CPM5
(Thippeswamy Havalige)
MicroSemi Switchtec management driver:
- Add Microchip PCI100X device IDs (Rakesh Babu Saladi)
Miscellaneous:
- Move reset related sysfs code from pci.c to pci-sysfs.c where other
similar code lives (Ilpo Järvinen)
- Simplify reset_method_store() memory management by using __free()
instead of explicit kfree() cleanup (Ilpo Järvinen)
- Constify struct bin_attribute for sysfs, VPD, P2PDMA, and the IBM
ACPI hotplug driver (Thomas Weißschuh)
- Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT (Dongdong
Zhang)
- Correct documentation of the 'config_acs=' kernel parameter
(Akihiko Odaki)"
* tag 'pci-v6.14-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (111 commits)
PCI: Batch BAR sizing operations
dt-bindings: PCI: microchip,pcie-host: Allow dma-noncoherent
PCI: microchip: Set inbound address translation for coherent or non-coherent mode
Documentation: Fix pci=config_acs= example
PCI: Remove redundant PCI_VSEC_HDR and PCI_VSEC_HDR_LEN_SHIFT
PCI: Don't include 'pm_wakeup.h' directly
selftests: pci_endpoint: Migrate to Kselftest framework
selftests: Move PCI Endpoint tests from tools/pci to Kselftests
misc: pci_endpoint_test: Fix IOCTL return value
dt-bindings: PCI: qcom: Document the IPQ5424 PCIe controller
dt-bindings: PCI: qcom,pcie-sm8550: Document 'global' interrupt
dt-bindings: PCI: mobiveil: Convert mobiveil-pcie.txt to YAML
PCI: switchtec: Add Microchip PCI100X device IDs
misc: pci_endpoint_test: Remove redundant 'remainder' test
misc: pci_endpoint_test: Add consecutive BAR test
misc: pci_endpoint_test: Add support for capabilities
PCI: endpoint: pci-epf-test: Add support for capabilities
PCI: endpoint: pci-epf-test: Fix check for DMA MEMCPY test
PCI: endpoint: pci-epf-test: Set dma_chan_rx pointer to NULL on error
PCI: dwc: Simplify config resource lookup
...
|
||
|
Linus Torvalds
|
184a0997fb |
[GIT PULL for v6.14] media updates
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmeTNHEACgkQCF8+vY7k 4RWHRA//UI8B/q+/WHzqC5CCtySIvrabFvhQOFPR1GBwPBoASS0JwGuVFZcsJbjV m6krBshs2OTwafVH8Sbxw6tlShG5hs7fe6hwhtokEnrL5uzfgYMxf7MpM0F2g8CR 1zTow17A7TDeUhdYDTmVbdcOb9rj5oFJCEOVsQXNaAu2jsDBGVZ1P7iUZTwIeyT+ r0uUzrlLylH4neIyXu6yBWXYCmXbQXtGHxkwe5GGxKMfqKwD83KK5gd4uUpiAyJe tKW+gzZa/ngJaCQ+cr+8/z270h2vXeNohhC3c6Kq+/6pZgyEwUgyDTXT4nYVsUdd 1DeYiQekMUE3MwsKXPtFCyH3VGMvgMQK9fc+N10KC8wj+uCaqi59une8Yz3Ck89m tIE9R9EwBWiyAmSKEBVZAJJjOKi5TBC1lOw+RUUjnjwVG34gZhe/ML8IyWI8OcAH nEHb8BGwWHpoO7M5bmtzSbjAhgxzizzCclp1aEIzTlAbtC+1YXd96qJxzG5qjUrA uO0PvwghFjjiZKDU9Iwsk9q83VMCva3IX9pondmefC5OZvgR5xG/L6H5JfwRotOa XlRLj80/Pmn+PqvHxHJYqHkp9ujqiGbq6b0PJYU7FjiyghDGV7+urHuvmT+sdLo8 +nzch/NbZDf2WFxENZOzAOSYKYbahcp3dqkiOwTU1Iu23ERkSws= =ktuX -----END PGP SIGNATURE----- Merge tag 'media/v6.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - Sensor driver fixes - remove dead TI wl128x FM radio driver - Add support for the imx462 sensor at the IMX290 binding - V4L2 pixel data transmitter and receiver documentation improvements - Add support for MIPI Discovery and Configuration for C-PHY line orders - imx8-isi fixes and improvements - stm32: dcmipp: add core support for the stm32mp25 - qcom: camss: Add sc7280 support - Various fixes and enhancements * tag 'media/v6.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (152 commits) media: nuvoton: Fix an error check in npcm_video_ece_init() media: dvb-usb-v2: af9035: fix ISO C90 compilation error on af9035_i2c_master_xfer media: platform: rzg2l-cru: rzg2l-video: Fix the comment in rzg2l_cru_start_streaming_vq() media: fix secfeed undefined when filter alloc fail media: dt-bindings: trivial white-space and example cleanup MAINTAINERS: repair file entry in MEDIA DRIVERS FOR STM32 - CSI media: solo6x10: Use const 'struct bin_attribute' callback media: saa7164: Remove unused values staging: media: imx: fix OF node leak in imx_media_add_of_subdevs() media: platform: exynos4-is: Remove unused __is_get_frame_size media: vidtv: Fix a null-ptr-deref in vidtv_mux_stop_thread media: mmp: Bring back registration of the device media: cec: include linux/debugfs.h and linux/seq_file.h where needed Revert "media: qcom: camss: Restructure camss_link_entities" media: venus: Remove unused hfi_core_ping() media: dt-bindings: qcom-venus: Deprecate video-decoder and video-encoder where applicable media: venus: Populate video encoder/decoder nodename entries media: venus: Add support for static video encoder/decoder declarations media: venus: match instance creation and destruction order media: venus: destroy hfi session after m2m_ctx release ... |
||
|
Linus Torvalds
|
7685b334d1 |
perf-tools changes for v6.14
There are a lot of changes in the perf tools in this cycle.
build
-----
* Use generic syscall table to generate syscall numbers on supported archs.
* This also enables to get rid of libaudit which was used for syscall numbers.
* Remove python2 support as it's deprecated for years.
* Fix issues on static build with libzstd.
perf record
-----------
* Intel-PT supports "aux-action" config term to pause or resume tracing in
the aux-buffer. Users can start the intel_pt event as "started-paused" and
configure other events to control the Intel-PT tracing.
# perf record --kcore -e intel_pt/aux-action=start-paused/ \
-e syscalls:sys_enter_newuname/aux-action=resume/ \
-e syscalls:sys_exit_newuname/aux-action=pause/ -- uname
This requires the kernel support (which was added in v6.13).
perf lock
---------
* 'perf lock contention' command has an ability to symbolize locks in
dynamically allocated objects using slab cache name when it runs with BPF.
Those dynamic locks would have "&" prefix in the name to distinguish them
from ordinary (static) locks.
# perf lock con -abl -E 5 sleep 1
contended total wait max wait avg wait address symbol
2 1.95 us 1.77 us 975 ns ffff9d5e852d3498 &task_struct (mutex)
1 1.18 us 1.18 us 1.18 us ffff9d5e852d3538 &task_struct (mutex)
4 1.12 us 354 ns 279 ns ffff9d5e841ca800 &kmalloc-cg-512 (mutex)
2 859 ns 617 ns 429 ns ffffffffa41c3620 delayed_uprobe_lock (mutex)
3 691 ns 388 ns 230 ns ffffffffa41c0940 pack_mutex (mutex)
This also requires the kernel/BPF support (which was added in v6.13).
perf ftrace
-----------
* 'perf ftrace latency' command gets a couple of options to support linear
buckets instead of exponential. Also it's possible to specify max and
min latency for the linear buckets.
# perf ftrace latency -abn -T switch_mm_irqs_off --bucket-range=100 \
--min-latency=200 --max-latency=800 -- sleep 1
# DURATION | COUNT | GRAPH |
0 - 200 ns | 186 | ### |
200 - 300 ns | 256 | ##### |
300 - 400 ns | 364 | ####### |
400 - 500 ns | 223 | #### |
500 - 600 ns | 111 | ## |
600 - 700 ns | 41 | |
700 - 800 ns | 141 | ## |
800 - ... ns | 169 | ### |
# statistics (in nsec)
total time: 2162212
avg time: 967
max time: 16817
min time: 132
count: 2236
* As you can see in the above example, it nows shows the statistics at the
end so that users can see the avg/max/min latencies easily.
* 'perf ftrace profile' command has --graph-opts option like 'perf ftrace
trace' so that it can control the tracing behaviors in the same way.
For example, it can limit the function call depth or threshold.
perf script
-----------
* Improve physical memory resolution in 'mem-phys-addr' script by parsing
/proc/iomem file.
# perf script mem-phys-addr -- find /
...
Event: mem_inst_retired.all_loads:P
Memory type count percentage
---------------------------------------- ---------- ----------
100000000-85f7fffff : System RAM 8929 69.7
547600000-54785d23f : Kernel data 1240 9.7
546a00000-5474bdfff : Kernel rodata 490 3.8
5480ce000-5485fffff : Kernel bss 121 0.9
0-fff : Reserved 3860 30.1
100000-89c01fff : System RAM 18 0.1
8a22c000-8df6efff : System RAM 5 0.0
Others
------
* 'perf test' gets --runs-per-test option to run the test cases repeatedly.
This would be helpful to see if it's flaky.
* Add 'parse_events' method to Python perf extension module, so that users
can use the same event parsing logic in the python code. One more step
towards implementing perf tools in Python. :)
* Support opening tracepoint events without libtraceevent. This will be
helpful if it won't use the tracing data like in 'perf stat'.
* Update ARM Neoverse N2/V2 JSON events and metrics
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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Merge tag 'perf-tools-for-v6.14-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf-tools updates from Namhyung Kim:
"There are a lot of changes in the perf tools in this cycle.
build:
- Use generic syscall table to generate syscall numbers on supported
archs
- This also enables to get rid of libaudit which was used for syscall
numbers
- Remove python2 support as it's deprecated for years
- Fix issues on static build with libzstd
perf record:
- Intel-PT supports "aux-action" config term to pause or resume
tracing in the aux-buffer. Users can start the intel_pt event as
"started-paused" and configure other events to control the Intel-PT
tracing:
# perf record --kcore -e intel_pt/aux-action=start-paused/ \
-e syscalls:sys_enter_newuname/aux-action=resume/ \
-e syscalls:sys_exit_newuname/aux-action=pause/ -- uname
This requires kernel support (which was added in v6.13)
perf lock:
- 'perf lock contention' command has an ability to symbolize locks in
dynamically allocated objects using slab cache name when it runs
with BPF. Those dynamic locks would have "&" prefix in the name to
distinguish them from ordinary (static) locks
# perf lock con -abl -E 5 sleep 1
contended total wait max wait avg wait address symbol
2 1.95 us 1.77 us 975 ns ffff9d5e852d3498 &task_struct (mutex)
1 1.18 us 1.18 us 1.18 us ffff9d5e852d3538 &task_struct (mutex)
4 1.12 us 354 ns 279 ns ffff9d5e841ca800 &kmalloc-cg-512 (mutex)
2 859 ns 617 ns 429 ns ffffffffa41c3620 delayed_uprobe_lock (mutex)
3 691 ns 388 ns 230 ns ffffffffa41c0940 pack_mutex (mutex)
This also requires kernel/BPF support (which was added in v6.13)
perf ftrace:
- 'perf ftrace latency' command gets a couple of options to support
linear buckets instead of exponential. Also it's possible to
specify max and min latency for the linear buckets:
# perf ftrace latency -abn -T switch_mm_irqs_off --bucket-range=100 \
--min-latency=200 --max-latency=800 -- sleep 1
# DURATION | COUNT | GRAPH |
0 - 200 ns | 186 | ### |
200 - 300 ns | 256 | ##### |
300 - 400 ns | 364 | ####### |
400 - 500 ns | 223 | #### |
500 - 600 ns | 111 | ## |
600 - 700 ns | 41 | |
700 - 800 ns | 141 | ## |
800 - ... ns | 169 | ### |
# statistics (in nsec)
total time: 2162212
avg time: 967
max time: 16817
min time: 132
count: 2236
- As you can see in the above example, it nows shows the statistics
at the end so that users can see the avg/max/min latencies easily
- 'perf ftrace profile' command has --graph-opts option like 'perf
ftrace trace' so that it can control the tracing behaviors in the
same way. For example, it can limit the function call depth or
threshold
perf script:
- Improve physical memory resolution in 'mem-phys-addr' script by
parsing /proc/iomem file
# perf script mem-phys-addr -- find /
...
Event: mem_inst_retired.all_loads:P
Memory type count percentage
---------------------------------------- ---------- ----------
100000000-85f7fffff : System RAM 8929 69.7
547600000-54785d23f : Kernel data 1240 9.7
546a00000-5474bdfff : Kernel rodata 490 3.8
5480ce000-5485fffff : Kernel bss 121 0.9
0-fff : Reserved 3860 30.1
100000-89c01fff : System RAM 18 0.1
8a22c000-8df6efff : System RAM 5 0.0
Others:
- 'perf test' gets --runs-per-test option to run the test cases
repeatedly. This would be helpful to see if it's flaky
- Add 'parse_events' method to Python perf extension module, so that
users can use the same event parsing logic in the python code. One
more step towards implementing perf tools in Python. :)
- Support opening tracepoint events without libtraceevent. This will
be helpful if it won't use the tracing data like in 'perf stat'
- Update ARM Neoverse N2/V2 JSON events and metrics"
* tag 'perf-tools-for-v6.14-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (176 commits)
perf test: Update event_groups test to use instructions
perf bench: Fix undefined behavior in cmpworker()
perf annotate: Prefer passing evsel to evsel->core.idx
perf lock: Rename fields in lock_type_table
perf lock: Add percpu-rwsem for type filter
perf lock: Fix parse_lock_type which only retrieve one lock flag
perf lock: Fix return code for functions in __cmd_contention
perf hist: Fix width calculation in hpp__fmt()
perf hist: Fix bogus profiles when filters are enabled
perf hist: Deduplicate cmp/sort/collapse code
perf test: Improve verbose documentation
perf test: Add a runs-per-test flag
perf test: Fix parallel/sequential option documentation
perf test: Send list output to stdout rather than stderr
perf test: Rename functions and variables for better clarity
perf tools: Expose quiet/verbose variables in Makefile.perf
perf config: Add a function to set one variable in .perfconfig
perf test perftool_testsuite: Return correct value for skipping
perf test perftool_testsuite: Add missing description
perf test record+probe_libc_inet_pton: Make test resilient
...
|
||
|
Linus Torvalds
|
e8744fbc83 |
tracing updates for v6.14:
- Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Update the Rust tracepoint code to use the C code too There was some duplication of the tracepoint code for Rust that did the same logic as the C code. Add a helper that makes it possible for both algorithms to use the same logic in one place. - Add poll to trace event hist files It is useful to know when an event is triggered, or even with some filtering. Since hist files of events get updated when active and the event is triggered, allow applications to poll the hist file and wake up when an event is triggered. This will let the application know that the event it is waiting for happened. - Add :mod: command to enable events for current or future modules The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Add the command where if ':mod:<module>' is written into set_event, then either all the modules events are enabled if it is loaded, or cache it so that the module's events are enabled when it is loaded. This also works from the kernel command line, where "trace_event=:mod:<module>", when the module is loaded at boot up, its events will be enabled then. -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCZ5EbMxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qkZsAP9Amgx9frSbR1pn1t0I3wVnQx7khgOu s/b8Ro+vjTx1/QD/RN2AA7f+HK4F27w3Aqfrs0nKXAPtXWsJ9Epp8raG5w8= =Pg+4 -----END PGP SIGNATURE----- Merge tag 'trace-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracing updates from Steven Rostedt: - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Update the Rust tracepoint code to use the C code too There was some duplication of the tracepoint code for Rust that did the same logic as the C code. Add a helper that makes it possible for both algorithms to use the same logic in one place. - Add poll to trace event hist files It is useful to know when an event is triggered, or even with some filtering. Since hist files of events get updated when active and the event is triggered, allow applications to poll the hist file and wake up when an event is triggered. This will let the application know that the event it is waiting for happened. - Add :mod: command to enable events for current or future modules The function tracer already has a way to enable functions to be traced in modules by writing ":mod:<module>" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches <module>, its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Add the command where if ':mod:<module>' is written into set_event, then either all the modules events are enabled if it is loaded, or cache it so that the module's events are enabled when it is loaded. This also works from the kernel command line, where "trace_event=:mod:<module>", when the module is loaded at boot up, its events will be enabled then. * tag 'trace-v6.14-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits) tracing: Fix output of set_event for some cached module events tracing: Fix allocation of printing set_event file content tracing: Rename update_cache() to update_mod_cache() tracing: Fix #if CONFIG_MODULES to #ifdef CONFIG_MODULES selftests/ftrace: Add test that tests event :mod: commands tracing: Cache ":mod:" events for modules not loaded yet tracing: Add :mod: command to enabled module events selftests/tracing: Add hist poll() support test tracing/hist: Support POLLPRI event for poll on histogram tracing/hist: Add poll(POLLIN) support on hist file tracing: Fix using ret variable in tracing_set_tracer() tracepoint: Reduce duplication of __DO_TRACE_CALL tracing/string: Create and use __free(argv_free) in trace_dynevent.c tracing: Switch trace_stat.c code over to use guard() tracing: Switch trace_stack.c code over to use guard() tracing: Switch trace_osnoise.c code over to use guard() and __free() tracing: Switch trace_events_synth.c code over to use guard() tracing: Switch trace_events_filter.c code over to use guard() tracing: Switch trace_events_trigger.c code over to use guard() tracing: Switch trace_events_hist.c code over to use guard() ... |
||
|
Linus Torvalds
|
d0f93ac2c3 |
Documentation changes this time around include:
- Quite a bit of Chinese and Spanish translation work. - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance. - Some reorganization of debugging-oriented docs. ...and typo fixes, documentation updates, etc. as usual. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmeOp8EPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YipUH/iffvlVYuqoVdPUFWdmsiNjwOCRE2MIfp8qO tPTRRHJAny+NlFT0IWlGUbLNoNXtvpN47YlkaeAjdrsjASerfpwzje7t4Z1B+jWT 0YwGBCvDIGasfRCx7D14+w5aqkEEynfsy+QurwcuDxcHMQGwt7ZCuTNOVO6BULEr L++BMwqapUr5IemP4ItQqDVVF9sp6bWEhaOnTTJCLU6oG23uUSSA/59sJmwDJUk7 6J3VGO1An4Jte9WX7qkVrSBNO5cOOhaFiFXIeNxfOioOPctBwxKiHDJnzVud8ipz R+tnUI/8hEvyJ7GZFezyZxmMnFs0P2DEYAkaN+hBs/nUjx0dKUg= =YxaS -----END PGP SIGNATURE----- Merge tag 'docs-6.14' of git://git.lwn.net/linux Pull Documentation updates from Jonathan Corbet: - Quite a bit of Chinese and Spanish translation work - Clarifying that Git commit IDs >12chars are OK - A new nvme-multipath document - A reorganization of the admin-guide top-level page to make it readable - Clarification of the role of Acked-by and maintainer discretion on their acceptance - Some reorganization of debugging-oriented docs ... and typo fixes, documentation updates, etc as usual * tag 'docs-6.14' of git://git.lwn.net/linux: (50 commits) Documentation: Fix x86_64 UEFI outdated references to elilo Documentation/sysctl: Add timer_migration to kernel.rst docs/mm: Physical memory: Remove zone_t docs: submitting-patches: clarify that signers may use their discretion on tags docs: submitting-patches: clarify difference between Acked-by and Reviewed-by docs: submitting-patches: clarify Acked-by and introduce "# Suffix" Documentation: bug-hunting.rst: remove odd contact information docs/zh_CN: Add sak index Chinese translation doc: module: DEFAULT_SYMBOL_NAMESPACE must be defined before #includes doc: module: Fix documented type of namespace Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst docs/zh_CN: Add landlock index Chinese translation Documentation: Fix typo localmodonfig -> localmodconfig overlayfs.rst: Fix and improve grammar docs/zh_CN: Add siphash index Chinese translation docs/zh_CN: Add security IMA-templates Chinese translation docs/zh_CN: Add security digsig Chinese translation Align git commit ID abbreviation guidelines and checks docs: process: submitting-patches: split canonical patch format section docs/zh_CN: Add security lsm Chinese translation ... |
||
|
Linus Torvalds
|
96c84703f1 |
drm next for 6.14-rc1
core: - device memory cgroup controller added - Remove driver date from drm_driver - Add drm_printer based hex dumper - drm memory stats docs update - scheduler documentation improvements new driver: - amdxdna - Ryzen AI NPU support connector: - add a mutex to protect ELD - make connector setup two-step panels: - Introduce backlight quirks infrastructure - New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00, - Multi-Inno Technology MI1010Z1T-1CP11 bridge: - ti-sn65dsi83: Add ti,lvds-vod-swing optional properties - Provide default implementation of atomic_check for HDMI bridges - it605: HDCP improvements, MCCS Support xe: - make OA buffer size configurable - GuC capture fixes - add ufence and g2h flushes - restore system memory GGTT mappings - ioctl fixes - SRIOV PF scheduling priority - allow fault injection - lots of improvements/refactors - Enable GuC's WA_DUAL_QUEUE for newer platforms - IRQ related fixes and improvements i915: - More accurate engine busyness metrics with GuC submission - Ensure partial BO segment offset never exceeds allowed max - Flush GuC CT receive tasklet during reset preparation - Some DG2 refactor to fix DG2 bugs when operating with certain CPUs - Fix DG1 power gate sequence - Enabling uncompressed 128b/132b UHBR SST - Handle hdmi connector init failures, and no HDMI/DP cases - More robust engine resets on Haswell and older i915/xe display: - HDCP fixes for Xe3Lpd - New GSC FW ARL-H/ARL-U - support 3 VDSC engines 12 slices - MBUS joining sanitisation - reconcile i915/xe display power mgmt - Xe3Lpd fixes - UHBR rates for Thunderbolt amdgpu: - DRM panic support - track BO memory stats at runtime - Fix max surface handling in DC - Cleaner shader support for gfx10.3 dGPUs - fix drm buddy trim handling - SDMA engine reset updates - Fix doorbell ttm cleanup - RAS updates - ISP updates - SDMA queue reset support - Rework DPM powergating interfaces - Documentation updates and cleanups - DCN 3.5 updates - Use a pm notifier to more gracefully handle VRAM eviction on suspend or hibernate - Add debugfs interfaces for forcing scheduling to specific engine instances - GG 9.5 updates - IH 4.4 updates - Make missing optional firmware less noisy - PSP 13.x updates - SMU 13.x updates - VCN 5.x updates - JPEG 5.x updates - GC 12.x updates - DC FAMS updates amdkfd: - GG 9.5 updates - Logging improvements - Shader debugger fixes - Trap handler cleanup - Cleanup includes - Eviction fence wq fix msm: - MDSS: - properly described UBWC registers - added SM6150 (aka QCS615) support - DPU: - added SM6150 (aka QCS615) support - enabled wide planes if virtual planes are enabled (by using two SSPPs for a single plane) - added CWB hardware blocks support - DSI: - added SM6150 (aka QCS615) support - GPU: - Print GMU core fw version - GMU bandwidth voting for a740 and a750 - Expose uche trap base via uapi - UAPI error reporting rcar-du: - Add r8a779h0 Support ivpu: - Fix qemu crash when using passthrough nouveau: - expose GSP-RM logging buffers via debugfs panfrost: - Add MT8188 Mali-G57 MC3 support rockchip: - Gamma LUT support hisilicon: - new HIBMC support virtio-gpu: - convert to helpers - add prime support for scanout buffers v3d: - Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL vc4: - Add support for BCM2712 vkms: - line-per-line compositing algorithm to improve performance zynqmp: - Add DP audio support mediatek: - dp: Add sdp path reset - dp: Support flexible length of DP calibration data etnaviv: - add fdinfo memory support - add explicit reset handling -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmeJ5qYACgkQDHTzWXnE hr4o+w/9EbijDfyf8GCj4Qaxov8nZ3KEMW8LLmrYO3epfLsniX+nv01oNdbRXBjl QcsKixAvkyfLl61RuPnwbYiSJfxgwZ5K8rke7cshwlMB7zl7xZ+GZRoAmJlnokS4 uhmclCriW5nfKRNAGUPcj/ReGZeyHwqvGZn3jyuShkIFpE4rDope4DQsTzm/zs/i +cKyRAFm86EIdTACr9DVtb1L5uNZOnHDkufRH5EZr/7CWFco1krLxb/r4cvFaiIO GiDaLvXKXKwzQ6NeIWWCEU2zTBz0BluI8ggxp1+WlDiYgLDWtCBpBNPAoNJO/iQS J+E8bsk2b/aCLSJQgxcK0y80CXpoJyALaqStdHUqxuWv3/o0g8lFUJlfJVCNPIsg o4mBkdbgkzkHCPxUbie7uQIx+2DIsEiwWC/YGBeRx49qEYsLWyFHf6JR8j9aHCQq eGanaubzR+W2AC81yktd3rcxpmX5kq8n6ax3ZtS9wnio8iyB5jBDM8QeFSAE/vXV B5TT1nneh+HXJ6bTwZBFXkiq2JRxUdbZIS5oQLh0zixVthBMISSsYhJ222nH1bC4 DWIS2ggqSgqkb0WsE29CJyhJ1fPmS3v7lBXqPvjmN5vMto4gGOJAEgT6CiDpGFIz zXzNfrirr1r95iSST4PnYVOOkfK3t9gvbWMXgkr0wygtxyoxHzk= =5FIc -----END PGP SIGNATURE----- Merge tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "There are two external interactions of note, the msm tree pull in some opp tree, hopefully the opp tree arrives from the same git tree however it normally does. There is also a new cgroup controller for device memory, that is used by drm, so is merging through my tree. This will hopefully help open up gpu cgroup usage a bit more and move us forward. There is a new accelerator driver for the AMD XDNA Ryzen AI NPUs. Then the usual xe/amdgpu/i915/msm leaders and lots of changes and refactors across the board: core: - device memory cgroup controller added - Remove driver date from drm_driver - Add drm_printer based hex dumper - drm memory stats docs update - scheduler documentation improvements new driver: - amdxdna - Ryzen AI NPU support connector: - add a mutex to protect ELD - make connector setup two-step panels: - Introduce backlight quirks infrastructure - New panels: KDB KD116N2130B12, Tianma TM070JDHG34-00, - Multi-Inno Technology MI1010Z1T-1CP11 bridge: - ti-sn65dsi83: Add ti,lvds-vod-swing optional properties - Provide default implementation of atomic_check for HDMI bridges - it605: HDCP improvements, MCCS Support xe: - make OA buffer size configurable - GuC capture fixes - add ufence and g2h flushes - restore system memory GGTT mappings - ioctl fixes - SRIOV PF scheduling priority - allow fault injection - lots of improvements/refactors - Enable GuC's WA_DUAL_QUEUE for newer platforms - IRQ related fixes and improvements i915: - More accurate engine busyness metrics with GuC submission - Ensure partial BO segment offset never exceeds allowed max - Flush GuC CT receive tasklet during reset preparation - Some DG2 refactor to fix DG2 bugs when operating with certain CPUs - Fix DG1 power gate sequence - Enabling uncompressed 128b/132b UHBR SST - Handle hdmi connector init failures, and no HDMI/DP cases - More robust engine resets on Haswell and older i915/xe display: - HDCP fixes for Xe3Lpd - New GSC FW ARL-H/ARL-U - support 3 VDSC engines 12 slices - MBUS joining sanitisation - reconcile i915/xe display power mgmt - Xe3Lpd fixes - UHBR rates for Thunderbolt amdgpu: - DRM panic support - track BO memory stats at runtime - Fix max surface handling in DC - Cleaner shader support for gfx10.3 dGPUs - fix drm buddy trim handling - SDMA engine reset updates - Fix doorbell ttm cleanup - RAS updates - ISP updates - SDMA queue reset support - Rework DPM powergating interfaces - Documentation updates and cleanups - DCN 3.5 updates - Use a pm notifier to more gracefully handle VRAM eviction on suspend or hibernate - Add debugfs interfaces for forcing scheduling to specific engine instances - GG 9.5 updates - IH 4.4 updates - Make missing optional firmware less noisy - PSP 13.x updates - SMU 13.x updates - VCN 5.x updates - JPEG 5.x updates - GC 12.x updates - DC FAMS updates amdkfd: - GG 9.5 updates - Logging improvements - Shader debugger fixes - Trap handler cleanup - Cleanup includes - Eviction fence wq fix msm: - MDSS: - properly described UBWC registers - added SM6150 (aka QCS615) support - DPU: - added SM6150 (aka QCS615) support - enabled wide planes if virtual planes are enabled (by using two SSPPs for a single plane) - added CWB hardware blocks support - DSI: - added SM6150 (aka QCS615) support - GPU: - Print GMU core fw version - GMU bandwidth voting for a740 and a750 - Expose uche trap base via uapi - UAPI error reporting rcar-du: - Add r8a779h0 Support ivpu: - Fix qemu crash when using passthrough nouveau: - expose GSP-RM logging buffers via debugfs panfrost: - Add MT8188 Mali-G57 MC3 support rockchip: - Gamma LUT support hisilicon: - new HIBMC support virtio-gpu: - convert to helpers - add prime support for scanout buffers v3d: - Add DRM_IOCTL_V3D_PERFMON_SET_GLOBAL vc4: - Add support for BCM2712 vkms: - line-per-line compositing algorithm to improve performance zynqmp: - Add DP audio support mediatek: - dp: Add sdp path reset - dp: Support flexible length of DP calibration data etnaviv: - add fdinfo memory support - add explicit reset handling" * tag 'drm-next-2025-01-17' of https://gitlab.freedesktop.org/drm/kernel: (1070 commits) drm/bridge: fix documentation for the hdmi_audio_prepare() callback doc/cgroup: Fix title underline length drm/doc: Include new drm-compute documentation cgroup/dmem: Fix parameters documentation cgroup/dmem: Select PAGE_COUNTER kernel/cgroup: Remove the unused variable climit drm/display: hdmi: Do not read EDID on disconnected connectors drm/tests: hdmi: Add connector disablement test drm/connector: hdmi: Do atomic check when necessary drm/amd/display: 3.2.316 drm/amd/display: avoid reset DTBCLK at clock init drm/amd/display: improve dpia pre-train drm/amd/display: Apply DML21 Patches drm/amd/display: Use HW lock mgr for PSR1 drm/amd/display: Revised for Replay Pseudo vblank control drm/amd/display: Add a new flag for replay low hz drm/amd/display: Remove unused read_ono_state function from Hwss module drm/amd/display: Do not elevate mem_type change to full update drm/amd/display: Do not wait for PSR disable on vbl enable drm/amd/display: Remove unnecessary eDP power down ... |
||
|
Akihiko Odaki
|
b388face5f |
Documentation: Fix pci=config_acs= example
The documentation currently says:
config_acs=
Format:
<ACS flags>@<pci_dev>[; ...]
Specify one or more PCI devices (in the format
specified above) optionally prepended with flags
and separated by semicolons. The respective
capabilities will be enabled, disabled or
unchanged based on what is specified in
flags.
(...)
For example,
pci=config_acs=10x
would configure all devices that support
ACS to enable P2P Request Redirect, disable
Translation Blocking, and leave Source
Validation unchanged from whatever power-up
or firmware set it to.
See the complete documentation at:
https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html
However, a flag specification always needs to be suffixed with "@" and
a PCI valid device address, which is missing in this example. Also, to
configure all devices that support ACS, the flag needs to be suffixed
with "@pci:0:0", for the ACS support to be enabled.
Fix the documentation so the example is correct.
Link: https://lore.kernel.org/r/20240915-acs-v1-1-b9ee536ee9bd@daynix.com
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
|
||
|
Linus Torvalds
|
9f3ee94e70 |
RCU pull request for v6.14
This pull request contains the following branches:
fixes.2024.12.14a: Misc fixes, check if IRQs are disabled in rcu_exp_need_qs(),
instrument KCSAN exclusive-writer assertions, add extra WARN_ON_ONCE() check,
set the cpu_no_qs.b.exp under lock, warn if callback enqueued on offline CPU.
rcutorture.2024.12.14a: Torture-test updates, add rcutorture.preempt_duration kernel
module parameter, make the TREE03 scenario do preemption, improve pooling timeouts
for rcu_torture_writer(), improve output of "Failure/close-call rcutorture reader
segments", add some reader-state debugging checks, update doc of polled APIs, add
extra diagnostics for per-reader-segment preemption.
srcu.2024.12.14a: SRCU updates, improve doc for srcu_read_lock() in terms of return
value, fix typo in comments, remove redundant GP sequence checks in the
srcu_funnel_gp_start.
torture-test.2024.12.14a: Add an extra test for sched_clock(), improve testing
on unresponsive systems.
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Merge tag 'rcu.release.v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Uladzislau Rezki:
"Misc fixes:
- check if IRQs are disabled in rcu_exp_need_qs()
- instrument KCSAN exclusive-writer assertions
- add extra WARN_ON_ONCE() check
- set the cpu_no_qs.b.exp under lock
- warn if callback enqueued on offline CPU
Torture-test updates:
- add rcutorture.preempt_duration kernel module parameter
- make the TREE03 scenario do preemption
- improve pooling timeouts for rcu_torture_writer()
- improve output of "Failure/close-call rcutorture reader segments"
- add some reader-state debugging checks
- update doc of polled APIs
- add extra diagnostics for per-reader-segment preemption
- add an extra test for sched_clock()
- improve testing on unresponsive systems
SRCU updates:
- improve doc for srcu_read_lock() in terms of return value
- fix typo in comments
- remove redundant GP sequence checks in the srcu_funnel_gp_start"
* tag 'rcu.release.v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (31 commits)
srcu: Remove redundant GP sequence checks in srcu_funnel_gp_start
srcu: Fix typo s/srcu_check_read_flavor()/__srcu_check_read_flavor()/
srcu: Guarantee non-negative return value from srcu_read_lock()
MAINTAINERS: Update RCU git tree
rcu: Add lockdep_assert_irqs_disabled() to rcu_exp_need_qs()
rcu: Add KCSAN exclusive-writer assertions for rdp->cpu_no_qs.b.exp
rcu: Make preemptible rcu_exp_handler() check idempotency
rcu: Replace open-coded rcu_exp_need_qs() from rcu_exp_handler() with call
rcu: Move rcu_report_exp_rdp() setting of ->cpu_no_qs.b.exp under lock
rcu: Make rcu_report_exp_cpu_mult() caller acquire lock
rcu: Report callbacks enqueued on offline CPU blind spot
rcutorture: Use symbols for SRCU reader flavors
rcutorture: Add per-reader-segment preemption diagnostics
rcutorture: Read CPU ID for decoration protected by both reader types
rcutorture: Add preempt_count() to rcutorture_one_extend_check() diagnostics
rcutorture: Add parameters to control polled/conditional wait interval
rcutorture: Add documentation for recent conditional and polled APIs
rcutorture: Ignore attempts to test preemption and forward progress
rcutorture: Make rcutorture_one_extend() check reader state
rcutorture: Pretty-print rcutorture reader segments
...
|
||
|
Linus Torvalds
|
62de6e1685 |
Scheduler enhancements for v6.14:
- Fair scheduler (SCHED_FAIR) enhancements:
- Behavioral improvements:
- Untangle NEXT_BUDDY and pick_next_task() (Peter Zijlstra)
- Delayed-dequeue enhancements & fixes: (Vincent Guittot)
- Rename h_nr_running into h_nr_queued
- Add new cfs_rq.h_nr_runnable
- Use the new cfs_rq.h_nr_runnable
- Removed unsued cfs_rq.h_nr_delayed
- Rename cfs_rq.idle_h_nr_running into h_nr_idle
- Remove unused cfs_rq.idle_nr_running
- Rename cfs_rq.nr_running into nr_queued
- Do not try to migrate delayed dequeue task
- Fix variable declaration position
- Encapsulate set custom slice in a __setparam_fair() function
- Fixes:
- Fix race between yield_to() and try_to_wake_up() (Tianchen Ding)
- Fix CPU bandwidth limit bypass during CPU hotplug (Vishal Chourasia)
- Cleanups:
- Clean up in migrate_degrades_locality() to improve
readability (Peter Zijlstra)
- Mark m*_vruntime() with __maybe_unused (Andy Shevchenko)
- Update comments after sched_tick() rename (Sebastian Andrzej Siewior)
- Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()
(Valentin Schneider)
- Deadline scheduler (SCHED_DL) enhancements:
- Restore dl_server bandwidth on non-destructive root domain
changes (Juri Lelli)
- Correctly account for allocated bandwidth during
hotplug (Juri Lelli)
- Check bandwidth overflow earlier for hotplug (Juri Lelli)
- Clean up goto label in pick_earliest_pushable_dl_task()
(John Stultz)
- Consolidate timer cancellation (Wander Lairson Costa)
- Load-balancer enhancements:
- Improve performance by prioritizing migrating eligible
tasks in sched_balance_rq() (Hao Jia)
- Do not compute NUMA Balancing stats unnecessarily during
load-balancing (K Prateek Nayak)
- Do not compute overloaded status unnecessarily during
load-balancing (K Prateek Nayak)
- Generic scheduling code enhancements:
- Use READ_ONCE() in task_on_rq_queued(), to consistently use
the WRITE_ONCE() updated ->on_rq field (Harshit Agarwal)
- Isolated CPUs support enhancements: (Waiman Long)
- Make "isolcpus=nohz" equivalent to "nohz_full"
- Consolidate housekeeping cpumasks that are always identical
- Remove HK_TYPE_SCHED
- Unify HK_TYPE_{TIMER|TICK|MISC} to HK_TYPE_KERNEL_NOISE
- RSEQ enhancements:
- Validate read-only fields under DEBUG_RSEQ config
(Mathieu Desnoyers)
- PSI enhancements:
- Fix race when task wakes up before psi_sched_switch()
adjusts flags (Chengming Zhou)
- IRQ time accounting performance enhancements: (Yafang Shao)
- Define sched_clock_irqtime as static key
- Don't account irq time if sched_clock_irqtime is disabled
- Virtual machine scheduling enhancements:
- Don't try to catch up excess steal time (Suleiman Souhlal)
- Heterogenous x86 CPU scheduling enhancements: (K Prateek Nayak)
- Convert "sysctl_sched_itmt_enabled" to boolean
- Use guard() for itmt_update_mutex
- Move the "sched_itmt_enabled" sysctl to debugfs
- Remove x86_smt_flags and use cpu_smt_flags directly
- Use x86_sched_itmt_flags for PKG domain unconditionally
- Debugging code & instrumentation enhancements:
- Change need_resched warnings to pr_err() (David Rientjes)
- Print domain name in /proc/schedstat (K Prateek Nayak)
- Fix value reported by hot tasks pulled in /proc/schedstat (Peter Zijlstra)
- Report the different kinds of imbalances in /proc/schedstat (Swapnil Sapkal)
- Move sched domain name out of CONFIG_SCHED_DEBUG (Swapnil Sapkal)
- Update Schedstat version to 17 (Swapnil Sapkal)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduler (SCHED_FAIR) enhancements:
- Behavioral improvements:
- Untangle NEXT_BUDDY and pick_next_task() (Peter Zijlstra)
- Delayed-dequeue enhancements & fixes: (Vincent Guittot)
- Rename h_nr_running into h_nr_queued
- Add new cfs_rq.h_nr_runnable
- Use the new cfs_rq.h_nr_runnable
- Removed unsued cfs_rq.h_nr_delayed
- Rename cfs_rq.idle_h_nr_running into h_nr_idle
- Remove unused cfs_rq.idle_nr_running
- Rename cfs_rq.nr_running into nr_queued
- Do not try to migrate delayed dequeue task
- Fix variable declaration position
- Encapsulate set custom slice in a __setparam_fair() function
- Fixes:
- Fix race between yield_to() and try_to_wake_up() (Tianchen Ding)
- Fix CPU bandwidth limit bypass during CPU hotplug (Vishal
Chourasia)
- Cleanups:
- Clean up in migrate_degrades_locality() to improve readability
(Peter Zijlstra)
- Mark m*_vruntime() with __maybe_unused (Andy Shevchenko)
- Update comments after sched_tick() rename (Sebastian Andrzej
Siewior)
- Remove CONFIG_CFS_BANDWIDTH=n definition of cfs_bandwidth_used()
(Valentin Schneider)
Deadline scheduler (SCHED_DL) enhancements:
- Restore dl_server bandwidth on non-destructive root domain changes
(Juri Lelli)
- Correctly account for allocated bandwidth during hotplug (Juri
Lelli)
- Check bandwidth overflow earlier for hotplug (Juri Lelli)
- Clean up goto label in pick_earliest_pushable_dl_task() (John
Stultz)
- Consolidate timer cancellation (Wander Lairson Costa)
Load-balancer enhancements:
- Improve performance by prioritizing migrating eligible tasks in
sched_balance_rq() (Hao Jia)
- Do not compute NUMA Balancing stats unnecessarily during
load-balancing (K Prateek Nayak)
- Do not compute overloaded status unnecessarily during
load-balancing (K Prateek Nayak)
Generic scheduling code enhancements:
- Use READ_ONCE() in task_on_rq_queued(), to consistently use the
WRITE_ONCE() updated ->on_rq field (Harshit Agarwal)
Isolated CPUs support enhancements: (Waiman Long)
- Make "isolcpus=nohz" equivalent to "nohz_full"
- Consolidate housekeeping cpumasks that are always identical
- Remove HK_TYPE_SCHED
- Unify HK_TYPE_{TIMER|TICK|MISC} to HK_TYPE_KERNEL_NOISE
RSEQ enhancements:
- Validate read-only fields under DEBUG_RSEQ config (Mathieu
Desnoyers)
PSI enhancements:
- Fix race when task wakes up before psi_sched_switch() adjusts flags
(Chengming Zhou)
IRQ time accounting performance enhancements: (Yafang Shao)
- Define sched_clock_irqtime as static key
- Don't account irq time if sched_clock_irqtime is disabled
Virtual machine scheduling enhancements:
- Don't try to catch up excess steal time (Suleiman Souhlal)
Heterogenous x86 CPU scheduling enhancements: (K Prateek Nayak)
- Convert "sysctl_sched_itmt_enabled" to boolean
- Use guard() for itmt_update_mutex
- Move the "sched_itmt_enabled" sysctl to debugfs
- Remove x86_smt_flags and use cpu_smt_flags directly
- Use x86_sched_itmt_flags for PKG domain unconditionally
Debugging code & instrumentation enhancements:
- Change need_resched warnings to pr_err() (David Rientjes)
- Print domain name in /proc/schedstat (K Prateek Nayak)
- Fix value reported by hot tasks pulled in /proc/schedstat (Peter
Zijlstra)
- Report the different kinds of imbalances in /proc/schedstat
(Swapnil Sapkal)
- Move sched domain name out of CONFIG_SCHED_DEBUG (Swapnil Sapkal)
- Update Schedstat version to 17 (Swapnil Sapkal)"
* tag 'sched-core-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits)
rseq: Fix rseq unregistration regression
psi: Fix race when task wakes up before psi_sched_switch() adjusts flags
sched, psi: Don't account irq time if sched_clock_irqtime is disabled
sched: Don't account irq time if sched_clock_irqtime is disabled
sched: Define sched_clock_irqtime as static key
sched/fair: Do not compute overloaded status unnecessarily during lb
sched/fair: Do not compute NUMA Balancing stats unnecessarily during lb
x86/topology: Use x86_sched_itmt_flags for PKG domain unconditionally
x86/topology: Remove x86_smt_flags and use cpu_smt_flags directly
x86/itmt: Move the "sched_itmt_enabled" sysctl to debugfs
x86/itmt: Use guard() for itmt_update_mutex
x86/itmt: Convert "sysctl_sched_itmt_enabled" to boolean
sched/core: Prioritize migrating eligible tasks in sched_balance_rq()
sched/debug: Change need_resched warnings to pr_err
sched/fair: Encapsulate set custom slice in a __setparam_fair() function
sched: Fix race between yield_to() and try_to_wake_up()
docs: Update Schedstat version to 17
sched/stats: Print domain name in /proc/schedstat
sched: Move sched domain name out of CONFIG_SCHED_DEBUG
sched: Report the different kinds of imbalances in /proc/schedstat
...
|
||
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Linus Torvalds
|
858df1de21 |
Miscellaneous x86 cleanups and typo fixes, and also the removal
of the "disablelapic" boot parameter. Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmePTD8RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1jf5g//Wo1WKUXukRrBANr2nIlx9B7xJliRmUxv mJ0VKo49YPl6C34fjSHhBs3+nPbYD+CyWVKAz5PqkfkFRGBgpQi26EnyKaIhLVFW HWhW5vQm/FJfzBIrfFg7g/H1PK+rEYa4mv8JF9vhwp7BOfuqx4ABGKWQnrvOGg2B VivE5k7/kxWRPTg45Kgb1iwlS2gcfWCRi9qdCzdJgY/4XYE6k6hKeV0PgTT3Vojf pZKsgZRq8tzMaX75obtyyrX3TWj0nkRec0XbgyXBFvlFh/l3e0RswxzGGAjrC1XP R+qmscdCkczUwRGc1mGj9MoCqMRRffU6/hTNsjqu8o7Q2gzZzXWHcUc+X7UwOeKZ 2guxOj4iagdn7+mIso6uAjY+OOdFVw7/C8ysbCmwo3MiaDsfaK2NkdBoT2xDWuIw NP/45RMpTIsgL0wG6upzXXApKgYxfWhNSq+oHDF4/TjWY4i779hjMghvtX1BI7yb LXIh2SsRcnmEPl42UGaz6xmdmkulWZPPxI5rghixU48Eazkngfp7ZTHYpm5NFoRP Qc3JNcKo7rGmkoo/sA7uwawjnaTz/H77SDNjfAufzjVAKidvUqW6xaK/8JM1fq0n du+9sQN5MrAqdKx5Lu624s/7ektwkDeUdQFGazqS9y0GBT25T9Rw+LQDuec7BG3p v8sok4IaPA0= =Hzj3 -----END PGP SIGNATURE----- Merge tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 cleanups from Ingo Molnar: "Miscellaneous x86 cleanups and typo fixes, and also the removal of the 'disablelapic' boot parameter" * tag 'x86-cleanups-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Remove a stray tab in the IO-APIC type string x86/cpufeatures: Remove "AMD" from the comments to the AMD-specific leaf Documentation/kernel-parameters: Fix a typo in kvm.enable_virt_at_load text x86/cpu: Fix typo in x86_match_cpu()'s doc x86/apic: Remove "disablelapic" cmdline option Documentation: Merge x86-specific boot options doc into kernel-parameters.txt x86/ioremap: Remove unused size parameter in remapping functions x86/ioremap: Simplify setup_data mapping variants x86/boot/compressed: Remove unused header includes from kaslr.c |
||
|
Linus Torvalds
|
9ad09c4f28 |
arm64 updates for 6.14
Confidential Computing:
* Register a platform device when running in CCA realm mode to enable
automatic loading of dependent modules.
CPU Features:
* Update a bunch of system register definitions to pick up new field
encodings from the architectural documentation.
* Add hwcaps and selftests for the new (2024) dpISA extensions.
Documentation:
* Update EL3 (firmware) requirements for booting Linux on modern arm64
designs.
* Remove stale information about the kernel virtual memory map.
Miscellaneous:
* Minor cleanups and typo fixes.
Memory management:
* Fix vmemmap_check_pmd() to look at the PMD type bits
* LPA2 (52-bit physical addressing) cleanups and minor fixes.
* Adjust physical address space depending upon whether or not LPA2 is
enabled.
Perf and PMUs:
* Add port filtering support for NVIDIA's NVLINK-C2C Coresight PMU
* Extend AXI filtering support for the DDR PMU on NXP IMX SoCs
* Fix Designware PCIe PMU event numbering.
* Add generic branch events for the Apple M1 CPU PMU.
* Add support for Marvell Odyssey DDR and LLC-TAD PMUs.
* Cleanups to the Hisilicon DDRC and Uncore PMU code.
* Advertise discard mode for the SPE PMU.
* Add the perf users mailing list to our MAINTAINERS entry.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"We've got a little less than normal thanks to the holidays in
December, but there's the usual summary below. The highlight is
probably the 52-bit physical addressing (LPA2) clean-up from Ard.
Confidential Computing:
- Register a platform device when running in CCA realm mode to enable
automatic loading of dependent modules
CPU Features:
- Update a bunch of system register definitions to pick up new field
encodings from the architectural documentation
- Add hwcaps and selftests for the new (2024) dpISA extensions
Documentation:
- Update EL3 (firmware) requirements for booting Linux on modern
arm64 designs
- Remove stale information about the kernel virtual memory map
Miscellaneous:
- Minor cleanups and typo fixes
Memory management:
- Fix vmemmap_check_pmd() to look at the PMD type bits
- LPA2 (52-bit physical addressing) cleanups and minor fixes
- Adjust physical address space depending upon whether or not LPA2 is
enabled
Perf and PMUs:
- Add port filtering support for NVIDIA's NVLINK-C2C Coresight PMU
- Extend AXI filtering support for the DDR PMU on NXP IMX SoCs
- Fix Designware PCIe PMU event numbering
- Add generic branch events for the Apple M1 CPU PMU
- Add support for Marvell Odyssey DDR and LLC-TAD PMUs
- Cleanups to the Hisilicon DDRC and Uncore PMU code
- Advertise discard mode for the SPE PMU
- Add the perf users mailing list to our MAINTAINERS entry"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
Documentation: arm64: Remove stale and redundant virtual memory diagrams
perf docs: arm_spe: Document new discard mode
perf: arm_spe: Add format option for discard mode
MAINTAINERS: Add perf list for drivers/perf/
arm64: Remove duplicate included header
drivers/perf: apple_m1: Map generic branch events
arm64: rsi: Add automatic arm-cca-guest module loading
kselftest/arm64: Add 2024 dpISA extensions to hwcap test
KVM: arm64: Allow control of dpISA extensions in ID_AA64ISAR3_EL1
arm64/hwcap: Describe 2024 dpISA extensions to userspace
arm64/sysreg: Update ID_AA64SMFR0_EL1 to DDI0601 2024-12
arm64: Filter out SVE hwcaps when FEAT_SVE isn't implemented
drivers/perf: hisi: Set correct IRQ affinity for PMUs with no association
arm64/sme: Move storage of reg_smidr to __cpuinfo_store_cpu()
arm64: mm: Test for pmd_sect() in vmemmap_check_pmd()
arm64/mm: Replace open encodings with PXD_TABLE_BIT
arm64/mm: Rename pte_mkpresent() as pte_mkvalid()
arm64/sysreg: Update ID_AA64ISAR2_EL1 to DDI0601 2024-09
arm64/sysreg: Update ID_AA64ZFR0_EL1 to DDI0601 2024-09
arm64/sysreg: Update ID_AA64FPFR0_EL1 to DDI0601 2024-09
...
|
||
|
Phil Auld
|
e129fdc599 |
Documentation/sysctl: Add timer_migration to kernel.rst
There is no mention of timer_migration in the docs. Add a short description. Signed-off-by: Phil Auld <pauld@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250114190525.169022-1-pauld@redhat.com |
||
|
Steven Rostedt
|
b355247df1 |
tracing: Cache ":mod:" events for modules not loaded yet
When the :mod: command is written into /sys/kernel/tracing/set_event (or that file within an instance), if the module specified after the ":mod:" is not yet loaded, it will store that string internally. When the module is loaded, it will enable the events as if the module was loaded when the string was written into the set_event file. This can also be useful to enable events that are in the init section of the module, as the events are enabled before the init section is executed. This also works on the kernel command line: trace_event=:mod:<module> Will enable the events for <module> when it is loaded. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Link: https://lore.kernel.org/20250116143533.514730995@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
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Wenchao Hao
|
67c8b11bd5 |
mm: add per-order mTHP swap-in fallback/fallback_charge counters
Currently, large folio swap-in is supported, but we lack a method to analyze their success ratio. Similar to anon_fault_fallback, we introduce per-order mTHP swpin_fallback and swpin_fallback_charge counters for calculating their success ratio. The new counters are located at: /sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats/ swpin_fallback swpin_fallback_charge Link: https://lkml.kernel.org/r/20241202124730.2407037-1-haowenchao22@gmail.com Signed-off-by: Wenchao Hao <haowenchao22@gmail.com> Reviewed-by: Barry Song <baohua@kernel.org> Reviewed-by: Lance Yang <ioworker0@gmail.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox <willy@infradead.org> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Usama Arif <usamaarif642@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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255ff62d15 |
docs: tmpfs: drop 'fadvise()' from the documentation
Drop 'fadvise()' from the doc, since fadvise() has no HUGEPAGE advise currently. Link: https://lkml.kernel.org/r/3a10bb49832f6d9827dc2c76aec0bf43a892876b.1732779148.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Barry Song <baohua@kernel.org> Acked-by: David Hildenbrand <david@redhat.com> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Hildenbrand
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5a4550c96b |
docs: tmpfs: update the large folios policy for tmpfs and shmem
Update the large folios policy for tmpfs and shmem. Link: https://lkml.kernel.org/r/9b7418af30e300d1eb05721b81d79074d0bb0ec9.1732779148.git.baolin.wang@linux.alibaba.com Signed-off-by: David Hildenbrand <david@redhat.com> Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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d635ccdb43 |
mm: shmem: add a kernel command line to change the default huge policy for tmpfs
Now the tmpfs can allow to allocate any sized large folios, and the default huge policy is still preferred to be 'never'. Due to tmpfs not behaving like other file systems in some cases as previously explained by David[1]: : I think I raised this in the past, but tmpfs/shmem is just like any : other file system .. except it sometimes really isn't and behaves much : more like (swappable) anonymous memory. (or mlocked files) : : There are many systems out there that run without swap enabled, or with : extremely minimal swap (IIRC until recently kubernetes was completely : incompatible with swapping). Swap can even be disabled today for shmem : using a mount option. : : That's a big difference to all other file systems where you are : guaranteed to have backend storage where you can simply evict under : memory pressure (might temporarily fail, of course). : : I *think* that's the reason why we have the "huge=" parameter that also : controls the THP allocations during page faults (IOW possible memory : over-allocation). Maybe also because it was a new feature, and we only : had a single THP size. Thus adding a new command line to change the default huge policy will be helpful to use the large folios for tmpfs, which is similar to the 'transparent_hugepage_shmem' cmdline for shmem. [1] https://lore.kernel.org/all/cbadd5fe-69d5-4c21-8eb8-3344ed36c721@redhat.com/ Link: https://lkml.kernel.org/r/ff390b2656f0d39649547f8f2cbb30fcb7e7be2d.1732779148.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Rafael J. Wysocki
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56098a4505 |
cpuidle: menu: Update documentation after previous changes
After commit |
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Greg Kroah-Hartman
|
f80aaf40e2 |
Documentation: bug-hunting.rst: remove odd contact information
At the bottom of the bug-hunting.rst file there is a "signature" which doesn't seem to make much sense. It seems to predate git, and perhaps was from an earlier bug report that got copied into the document, but now makes no sense so remove it. Cc: greg@wind.rmcc.com Cc: Jonathan Corbet <corbet@lwn.net> Cc: Alex Shi <alexs@kernel.org> Cc: Yanteng Si <si.yanteng@linux.dev> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/2025011005-resistant-uncork-9814@gregkh |
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Charlie Jenkins
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3cc550f5bb |
perf tools: Remove dependency on libaudit
All architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag is no longer needed. With the removal of the flag, the related GENERIC_SYSCALL_TABLE can also be removed. libaudit was only used as a fallback for when HAVE_SYSCALL_TABLE_SUPPORT was not defined, so libaudit is also no longer needed for any architecture. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christian Brauner <brauner@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Günther Noack <gnoack@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@linaro.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Leo Yan <leo.yan@linux.dev> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mickaël Salaün <mic@digikod.net> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20250108-perf_syscalltbl-v6-16-7543b5293098@rivosinc.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Lubomir Rintel
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769b83735d |
Documentation/kernel-parameters: Fix a reference to vga-softcursor.rst
A very minor oversight that dates all the way back to rst migration in
commit
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Li Zhijian
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e043997713 |
Documentation: Fix typo localmodonfig -> localmodconfig
It's noticed when I myself made the same spelling mistake while searching for localmodconfig Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> Reviewed-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20250103004358.1310121-1-lizhijian@fujitsu.com |
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Mostafa Saleh
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e8440c1e2d |
Documentation: Update the behaviour of "kvm-arm.mode"
Commit
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Maarten Lankhorst
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b168ed458d
|
kernel/cgroup: Add "dmem" memory accounting cgroup
This code is based on the RDMA and misc cgroup initially, but now uses page_counter. It uses the same min/low/max semantics as the memory cgroup as a result. There's a small mismatch as TTM uses u64, and page_counter long pages. In practice it's not a problem. 32-bits systems don't really come with >=4GB cards and as long as we're consistently wrong with units, it's fine. The device page size may not be in the same units as kernel page size, and each region might also have a different page size (VRAM vs GART for example). The interface is simple: - Call dmem_cgroup_register_region() - Use dmem_cgroup_try_charge to check if you can allocate a chunk of memory, use dmem_cgroup__uncharge when freeing it. This may return an error code, or -EAGAIN when the cgroup limit is reached. In that case a reference to the limiting pool is returned. - The limiting cs can be used as compare function for dmem_cgroup_state_evict_valuable. - After having evicted enough, drop reference to limiting cs with dmem_cgroup_pool_state_put. This API allows you to limit device resources with cgroups. You can see the supported cards in /sys/fs/cgroup/dmem.capacity You need to echo +dmem to cgroup.subtree_control, and then you can partition device memory. Co-developed-by: Friedrich Vock <friedrich.vock@gmx.de> Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de> Co-developed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Maarten Lankhorst <dev@lankhorst.se> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20241204143112.1250983-1-dev@lankhorst.se Signed-off-by: Maxime Ripard <mripard@kernel.org> |
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Linus Torvalds
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5635d8bad2 |
25 hotfixes. 16 are cc:stable. 18 are MM and 7 are non-MM.
The usual bunch of singletons and two doubletons - please see the relevant changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZ3noXwAKCRDdBJ7gKXxA jkzRAP9Ejb8kbgCrA3cptnzlVkDCDUm0TmleepT3bx6B2rH0BgEAzSiTXf4ioZPg 4pOHnKIGOWEVPcVwBrdA0irWG+QPYAQ= =nEIZ -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2025-01-04-18-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull hotfixes from Andrew Morton: "25 hotfixes. 16 are cc:stable. 18 are MM and 7 are non-MM. The usual bunch of singletons and two doubletons - please see the relevant changelogs for details" * tag 'mm-hotfixes-stable-2025-01-04-18-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (25 commits) MAINTAINERS: change Arınç _NAL's name and email address scripts/sorttable: fix orc_sort_cmp() to maintain symmetry and transitivity mm/util: make memdup_user_nul() similar to memdup_user() mm, madvise: fix potential workingset node list_lru leaks mm/damon/core: fix ignored quota goals and filters of newly committed schemes mm/damon/core: fix new damon_target objects leaks on damon_commit_targets() mm/list_lru: fix false warning of negative counter vmstat: disable vmstat_work on vmstat_cpu_down_prep() mm: shmem: fix the update of 'shmem_falloc->nr_unswapped' mm: shmem: fix incorrect index alignment for within_size policy percpu: remove intermediate variable in PERCPU_PTR() mm: zswap: fix race between [de]compression and CPU hotunplug ocfs2: fix slab-use-after-free due to dangling pointer dqi_priv fs/proc/task_mmu: fix pagemap flags with PMD THP entries on 32bit kcov: mark in_softirq_really() as __always_inline docs: mm: fix the incorrect 'FileHugeMapped' field mailmap: modify the entry for Mathieu Othacehe mm/kmemleak: fix sleeping function called from invalid context at print message mm: hugetlb: independent PMD page table shared count maple_tree: reload mas before the second call for mas_empty_area ... |
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Baolin Wang
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472098f233 |
docs: mm: fix the incorrect 'FileHugeMapped' field
The '/proc/PID/smaps' does not have the 'FileHugeMapped' field to count the file transparent huge pages, instead, the 'FilePmdMapped' field should be used. Fix it. Link: https://lkml.kernel.org/r/d520ce3aba2b03b088be30bece732426a939049a.1734425264.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Acked-by: David Hildenbrand <david@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Linus Torvalds
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ccb98ccef0 |
platform-drivers-x86 for v6.13-4
Fixes and new HW support: - hp-wmi: Add HP OMEN 8 to thermal profile list and use timer quirk - mlx-platform: Fix PCI device refcount leaks - thinkpad-acpi: Support a new platform profile toggle hotkey The following is an automated shortlog grouped by driver: hp-wmi: - mark 8A15 board for timed OMEN thermal profile mlx-platform: - call pci_dev_put() to balance the refcount thinkpad-acpi: - Add support for hotkey 0x1401 -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZ3LkMAAKCRBZrE9hU+XO MYibAQCuGx8LrrUNL6dyiQgAMsEbHCK2HmmmS7VyiKBGW6cLPgD/aVGPJ/rmsIe9 BjKm/HzwPzbaND4Ru0QWnAd+1hRDRwE= =mWbU -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform drivers fixes from Ilpo Järvinen: "hp-wmi: - mark 8A15 board for timed OMEN thermal profile mlx-platform: - call pci_dev_put() to balance the refcount thinkpad-acpi: - Add support for hotkey 0x1401" * tag 'platform-drivers-x86-v6.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: platform/x86: thinkpad-acpi: Add support for hotkey 0x1401 platform/x86: hp-wmi: mark 8A15 board for timed OMEN thermal profile platform/x86: mlx-platform: call pci_dev_put() to balance the refcount |
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Borislav Petkov (AMD)
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1146f7429f |
Documentation/kernel-parameters: Fix a typo in kvm.enable_virt_at_load text
s/lode/load/ Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20241202120416.6054-5-bp@kernel.org |
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Vishnu Sankar
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7e16ae558a
|
platform/x86: thinkpad-acpi: Add support for hotkey 0x1401
F8 mode key on Lenovo 2025 platforms use a different key code. Adding support for the new keycode 0x1401. Tested on X1 Carbon Gen 13 and X1 2-in-1 Gen 10. Signed-off-by: Vishnu Sankar <vishnuocv@gmail.com> Reviewed-by: Mark Pearson <mpearson-lenovo@squebb.ca> Link: https://lore.kernel.org/r/20241227231840.21334-1-vishnuocv@gmail.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Sakari Ailus
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688c0a6907 |
media: Documentation: ipu3: Remove unused and obsolete references
Remove unused reference #f5 and obsolete reference f3. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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Rafael J. Wysocki
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05648c2f58 |
Fix a problem where systems without preferred cores were
misdetecting preferred cores. Fix issues with with boost numerator handling leading to inconsistently programmed CPPC max performance values. -----BEGIN PGP SIGNATURE----- iQJOBAABCgA4FiEECwtuSU6dXvs5GA2aLRkspiR3AnYFAmdZw5QaHG1hcmlvLmxp bW9uY2llbGxvQGFtZC5jb20ACgkQLRkspiR3AnZZrBAAiP54uI0B16cjQHng5o8v kd4wLF8JpmOkvatPkjIWM+xriF45WeV9v0lzzyyO/ClGnBpabwPTCAo7zE+Ofiy3 XDs+4hwHR7BGlEMlKx55wAymCDr0l+7Xa7sKTqBYVjqBTcsTHeqEH0fcRlwta+kv gzDR+ElmXNSRmnZpVeELee8yPfsB3m54Xza1XmRy5UqowYPHuxUNUiSMjW1bJvGk KzcrM/+Pe83ymuxCvtjvhaw012GlgwVWuSJ9791mrH6cwNpi/T1UxhjMKkCXbiND eWuNiLAG7ARfQ9wq8WvC+myor1uVuuZWKd2/ZC/tu+sAxzdOOWUDlpJ1ZnyQ4AmQ 4YKFupxrmVTtTZvnUWwoql5zTF9jC1+cY4GuccNleEXgtbFd+rj61lT85UZ44f+H 3y1U9MuaSCytmyve4uv4OgUimewPeZx3x2owkii/BBT/cvQVDniXcnTttyJnBral k7IrpseGvhWFfjQ418cedOGxboG2KdV4kQMqI8zvXuFsB5NyMN9/pe8wuyLUd4+a BMOfiEOPMYw1i0WeaXN9gNhKoagYsUX2CwKJzClAEEYWuylitBCuthJKM5LURYCK pJ2W5ICZ9y7g3gRZ9Hbi8+QDUnXjKrPnzRdmRlguVwmHPROmatnd5JvmrjZDncxu sskK4GBL2VEW6C9mBXdnhjY= =8cJC -----END PGP SIGNATURE----- Merge tag 'amd-pstate-v6.13-2024-12-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux Merge amd-pstate driver fixes for 6.13-rc4 from Mario Liminciello: "Fix a problem where systems without preferred cores were misdetecting preferred cores. Fix issues with with boost numerator handling leading to inconsistently programmed CPPC max performance values." * tag 'amd-pstate-v6.13-2024-12-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: cpufreq/amd-pstate: Use boost numerator for upper bound of frequencies cpufreq/amd-pstate: Store the boost numerator as highest perf again cpufreq/amd-pstate: Detect preferred core support before driver registration |
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Randy Dunlap
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d5af79c05e |
Documentation: move dev-tools debugging files to process/debugging/
Move gdb and kgdb debugging documentation to the dedicated debugging directory (Documentation/process/debugging/). Adjust the index.rst files to follow the file movement. Adjust files that refer to these moved files to follow the file movement. Update location of kgdb.rst in MAINTAINERS file. Add a link from dev-tools/index to process/debugging/index. Note: translations are not updated. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Sebastian Fricke <sebastian.fricke@collabora.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: workflows@vger.kernel.org Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Daniel Thompson <danielt@kernel.org> Cc: Douglas Anderson <dianders@chromium.org> Cc: linux-debuggers@vger.kernel.org Cc: kgdb-bugreport@lists.sourceforge.net Cc: Doug Anderson <dianders@chromium.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: linux-serial@vger.kernel.org Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Daniel Thompson <danielt@kernel.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241210000041.305477-1-rdunlap@infradead.org |
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Jonathan Corbet
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270beb5b2a |
docs: admin-guide: bring some order to the "everything else" section
The bulk of the admin guide had become a big pile of stuff haphazardly tossed together, mostly in the catch-all "everything else" section. Split that section into a few broad categories and sort the documents into them as appropriate. No documents have been added or removed, they are just reordered. Note that many of these documents are severely obsolete and should be considered for removal. Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241213182057.343527-4-corbet@lwn.net |
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Jonathan Corbet
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2eb4e66cdd |
docs: admin-guide: add some subsection headings
As part of the goal of bringing some order to this file, add subsection headings to help readers find what they are looking for. Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241213182057.343527-3-corbet@lwn.net |
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Jonathan Corbet
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42463d3e89 |
docs: admin-guide: join the sysfs information in one place
The documents describing sysfs are spread out in the admin guide; bring them together in one place. Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241213182057.343527-2-corbet@lwn.net |
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Paul E. McKenney
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282e06cc8f |
rcutorture: Add parameters to control polled/conditional wait interval
This commit adds rcutorture module parameters gp_cond_wi, gp_cond_wi_exp, gp_poll_wi, and gp_poll_wi_exp to control the wait interval for conditional, conditional expedited, polled, and polled expedited grace periods, respectively. When rcu_torture_writer() is testing these types of grace periods, hrtimers are used to randomly wait up to the specified number of microseconds, but with nanosecond granularity. In the case of conditional grace periods (get_state_synchronize_rcu() and cond_synchronize_rcu(), for example) there is just one wait. For polled grace periods (start_poll_synchronize_rcu() and poll_state_synchronize_rcu(), for example), there is a repeated series of waits until the grace period ends. For normal grace periods, the default is 16 jiffies (for example, 16,000 microseconds on a HZ=1000 system) and for expedited grace periods the default is 128 microseconds. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> |
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Paul E. McKenney
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cae7f6319e |
rcutorture: Add documentation for recent conditional and polled APIs
This commit adds kernel-parameters.txt documentation for rcutorture's (relatively) new gp_cond_exp, gp_cond_full, gp_cond_exp, gp_poll, gp_poll_exp, gp_poll_full, and gp_poll_exp module parameters. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> |
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Paul E. McKenney
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584975ccb7 |
rcutorture: Add random real-time preemption
This commit adds the rcutorture.preempt_duration kernel module parameter, which gives the real-time preemption duration in milliseconds (zero to disable, which is the default) and also the rcutorture.preempt_interval module parameter, which gives the interval between successive preemptions, also in milliseconds, defaulting to one second. The CPU to preempt is chosen at random from those online at that time. Races between preempting a given CPU and that CPU going offline are ignored, and preemption is forgone when this occurs. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> |
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Saru2003
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5c14b68596 |
Documentation: zram: fix dictionary spelling
Fixes a typo in the ZRAM documentation where 'dictioary' was misspelled. Corrected it to 'dictionary' in the example usage of 'algorithm_params'. Signed-off-by: Sarveshwaar SS <sarvesh20123@gmail.com> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241125165122.17521-1-sarvesh20123@gmail.com |
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Guixin Liu
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80568f479b |
docs, nvme: introduce nvme-multipath document
This adds a document about nvme-multipath and policies supported by the Linux NVMe host driver, and also each policy's best scenario. Signed-off-by: Guixin Liu <kanie@linux.alibaba.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241209071127.22922-1-kanie@linux.alibaba.com |
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Ruffalo Lavoisier
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5a3f0a11b2 |
docs: remove duplicate word
- Remove duplicate word, 'to'. Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241120043414.78811-1-RuffaloLavoisier@gmail.com |
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Cengiz Can
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e551bd4109 |
Documentation: remove :kyb: tags
:kyb: is an extra markup that we should avoid when we can. It worsens the plain-text reading experience and adds very little value to rendered views. Remove all :kbd: tags from Documentation/* Signed-off-by: Cengiz Can <cengiz@kernel.wtf> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241202090514.1716-1-cengiz@kernel.wtf |
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Ingo Molnar
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05453d36a2 |
Merge branch 'linus' into x86/cleanups, to resolve conflict
These two commits interact: upstream: |
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Borislav Petkov (AMD)
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ab0e7f2076 |
Documentation: Merge x86-specific boot options doc into kernel-parameters.txt
Documentation/arch/x86/x86_64/boot-options.rst is causing unnecessary confusion by being a second place where one can put x86 boot options. Move them into the main one. Drop removed ones like "acpi=ht", while at it. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20241202190011.11979-1-bp@kernel.org |
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Mario Limonciello
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50a062a762 |
cpufreq/amd-pstate: Store the boost numerator as highest perf again
commit |
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Yicong Yang
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3b051bb7cb |
drivers/perf: hisi: Export associated CPUs of each PMU through sysfs
Although the event of the uncore PMU can only be opened on a single CPU, some PMU does have the affinity on a range of CPUs. For example the L3C PMU is associated to the CPUs sharing the L3T it monitors. Users may infer this affinity by the PMU name which may have SCCL ID and CCL ID encoded (for L3C etc), but it's not that straightforward. So export this information by adding an "associated_cpus" sysfs attribute then user can get this directly. Reviewed-by: Jonathan Cameron <Joanthan.Cameron@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/20241210141525.37788-9-yangyicong@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Gowthami Thiagarajan
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5fcccba118 |
perf/marvell: Odyssey LLC-TAD performance monitor support
Each TAD provides eight 64-bit counters for monitoring cache behavior.The driver always configures the same counter for all the TADs. The user would end up effectively reserving one of eight counters in every TAD to look across all TADs. The occurrences of events are aggregated and presented to the user at the end of running the workload. The driver does not provide a way for the user to partition TADs so that different TADs are used for different applications. The performance events reflect various internal or interface activities. By combining the values from multiple performance counters, cache performance can be measured in terms such as: cache miss rate, cache allocations, interface retry rate, internal resource occupancy, etc. Each supported counter's event and formatting information is exposed to sysfs at /sys/devices/tad/. Use perf tool stat command to measure the pmu events. For instance: perf stat -e tad_hit_ltg,tad_hit_dtg <workload> Signed-off-by: Gowthami Thiagarajan <gthiagarajan@marvell.com> Link: https://lore.kernel.org/r/20241108040619.753343-6-gthiagarajan@marvell.com Signed-off-by: Will Deacon <will@kernel.org> |
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Gowthami Thiagarajan
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d950c381dc |
perf/marvell: Odyssey DDR Performance monitor support
Odyssey DRAM Subsystem supports eight counters for monitoring performance and software can program those counters to monitor any of the defined performance events. Supported performance events include those counted at the interface between the DDR controller and the PHY, interface between the DDR Controller and the CHI interconnect, or within the DDR Controller. Additionally DSS also supports two fixed performance event counters, one for ddr reads and the other for ddr writes. Signed-off-by: Gowthami Thiagarajan <gthiagarajan@marvell.com> Link: https://lore.kernel.org/r/20241108040619.753343-4-gthiagarajan@marvell.com Signed-off-by: Will Deacon <will@kernel.org> |
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Ilkka Koskinen
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8632306e09 |
Documentation: dwc_pcie_pmu: Fix the mnemonics and eventid
Fix the event id and type in the example. In addition, the recent fix, which addressed the mnemonics with mixed case, didn't fix the document. Match the names with the driver. Signed-off-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> Reviewed-by: Shuai Xue <xueshuai@linux.alibaba.com> Link: https://lore.kernel.org/r/20241205061914.5568-3-ilkka@os.amperecomputing.com Signed-off-by: Will Deacon <will@kernel.org> |
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Besar Wicaksono
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bce61d5c57 |
perf: arm_cspmu: nvidia: monitor all ports by default
Some NVIDIA PMUs like the NVLINK-C2C, CNVLINK, and PCIE PMU provide port filtering. If the port filter is set to zero, the counter of these PMUs will not capture any event. To avoid meaningless experiment, the driver sets the port filter value to a default non-zero value. Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com> Link: https://lore.kernel.org/r/20241031142118.1865965-5-bwicaksono@nvidia.com Signed-off-by: Will Deacon <will@kernel.org> |
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Besar Wicaksono
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ca26df4b10 |
perf: arm_cspmu: nvidia: enable NVLINK-C2C port filtering
Enable NVLINK-C2C port filtering to distinguish traffic from different GPUs connected to NVLINK-C2C. Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com> Link: https://lore.kernel.org/r/20241031142118.1865965-4-bwicaksono@nvidia.com Signed-off-by: Will Deacon <will@kernel.org> |
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Besar Wicaksono
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5f7cd0dc98 |
perf: arm_cspmu: nvidia: fix sysfs path in the kernel doc
Fix typos to the sysfs path referenced by NVIDIA uncore pmu kernel doc. Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com> Link: https://lore.kernel.org/r/20241031142118.1865965-3-bwicaksono@nvidia.com Signed-off-by: Will Deacon <will@kernel.org> |
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Waiman Long
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1174b9344b |
sched/isolation: Make "isolcpus=nohz" equivalent to "nohz_full"
The "isolcpus=nohz" boot parameter and flag were used to disable tick when running a single task. Nowsdays, this "nohz" flag is seldomly used as it is included as part of the "nohz_full" parameter. Extend this flag to cover other kernel noises disabled by the "nohz_full" parameter to make them equivalent. This also eliminates the need to use both the "isolcpus" and the "nohz_full" parameters to fully isolated a given set of CPUs. Suggested-by: Frederic Weisbecker <frederic@kernel.org> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Frederic Weisbecker <frederic@kernel.org> Link: https://lore.kernel.org/r/20241030175253.125248-3-longman@redhat.com |
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Sebastian Andrzej Siewior
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f66e4a9965 |
sched/core: Update kernel boot parameters for LAZY preempt.
Update the documentation for the `preempt=' parameter which now also
accepts `lazy'.
Fixes:
|
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Linus Torvalds
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29caf07e9d |
* Features
- extend next/check table to add support for 2^24 states to the
state machine.
- rework capability audit cache to use broader cred information
instead of just the profile. Also add a time stamp so old
entries can be aged out of the cache.
* Bug Fixes
- fix 'Do simple duplicate message elimination' to clear previous
state when updating in capability audit cache
- Fix memory leak for aa_unpack_strdup()
- properly handle cx/px lookup failure when in complain mode
- allocate xmatch for nullpdb inside aa_alloc_null fixing a
NULL ptr deref of tracking profiles in when in complain mode
* Cleanups
- Remove everything being reported as deadcode
- replace misleading 'scrubbing environment' phrase in debug print
- Remove unnecessary NULL check before kvfree()
- clean up duplicated parts of handle_onexec()
- Use IS_ERR_OR_NULL() helper function
- move new_profile declaration to top of block instead immediately
after label to remove C23 extension warning
* Documentation
- add comment to document capability.c:profile_capable ad ptr
parameter can not be NULL
- add comment to document first entry is in packed perms struct is
reserved for future planned expansion.
- Update LSM/apparmor.rst add blurb for
CONFIG_DEFAULT_SECURITY_APPARMOR
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Merge tag 'apparmor-pr-2024-11-27' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
Pull apparmor updates from John Johansen:
"Features:
- extend next/check table to add support for 2^24 states to the state
machine.
- rework capability audit cache to use broader cred information
instead of just the profile. Also add a time stamp so old entries
can be aged out of the cache.
Bug Fixes:
- fix 'Do simple duplicate message elimination' to clear previous
state when updating in capability audit cache
- Fix memory leak for aa_unpack_strdup()
- properly handle cx/px lookup failure when in complain mode
- allocate xmatch for nullpdb inside aa_alloc_null fixing a NULL ptr
deref of tracking profiles in when in complain mode
Cleanups:
- Remove everything being reported as deadcode
- replace misleading 'scrubbing environment' phrase in debug print
- Remove unnecessary NULL check before kvfree()
- clean up duplicated parts of handle_onexec()
- Use IS_ERR_OR_NULL() helper function
- move new_profile declaration to top of block instead immediately
after label to remove C23 extension warning
Documentation:
- add comment to document capability.c:profile_capable ad ptr
parameter can not be NULL
- add comment to document first entry is in packed perms struct is
reserved for future planned expansion.
- Update LSM/apparmor.rst add blurb for DEFAULT_SECURITY_APPARMOR"
* tag 'apparmor-pr-2024-11-27' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
apparmor: lift new_profile declaration to remove C23 extension warning
apparmor: replace misleading 'scrubbing environment' phrase in debug print
parser: drop dead code for XXX_comb macros
apparmor: Remove unused parameter L1 in macro next_comb
Docs: Update LSM/apparmor.rst
apparmor: audit_cap dedup based on subj_cred instead of profile
apparmor: add a cache entry expiration time aging out capability audit cache
apparmor: document capability.c:profile_capable ad ptr not being NULL
apparmor: fix 'Do simple duplicate message elimination'
apparmor: document first entry is in packed perms struct is reserved
apparmor: test: Fix memory leak for aa_unpack_strdup()
apparmor: Remove deadcode
apparmor: Remove unnecessary NULL check before kvfree()
apparmor: domain: clean up duplicated parts of handle_onexec()
apparmor: Use IS_ERR_OR_NULL() helper function
apparmor: add support for 2^24 states to the dfa state machine.
apparmor: properly handle cx/px lookup failure for complain
apparmor: allocate xmatch for nullpdb inside aa_alloc_null
|
||
|
Linus Torvalds
|
9ad55a67a7 |
soundwire updates for 6.13
- structure optimization of few bus structures and header updates
- support for 2.0 disco spec
- amd driver updates for acp revision, refactoring code and support for
acp6.3
- soft reset support for cadence driver
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Merge tag 'soundwire-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
- structure optimization of few bus structures and header updates
- support for 2.0 disco spec
- amd driver updates for acp revision, refactoring code and support for
acp6.3
- soft reset support for cadence driver
* tag 'soundwire-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire: (24 commits)
soundwire: Minor formatting fixups in sdw.h header
soundwire: Update the includes on the sdw.h header
soundwire: cadence: clear MCP BLOCK_WAKEUP in init
soundwire: cadence: add soft-reset on startup
soundwire: intel_auxdevice: add kernel parameter for mclk divider
soundwire: mipi-disco: add support for DP0/DPn 'lane-list' property
soundwire: mipi-disco: add new properties from 2.0 spec
soundwire: mipi-disco: add comment on DP0-supported property
soundwire: mipi-disco: add support for peripheral channelprepare timeout
soundwire: mipi_disco: add support for clock-scales property
soundwire: mipi-disco: add error handling for property array read
soundwire: mipi-disco: remove DPn audio-modes
soundwire: optimize sdw_dpn_prop
soundwire: optimize sdw_dp0_prop
soundwire: optimize sdw_slave_prop
soundwire: optimize sdw_bus structure
soundwire: optimize sdw_master_prop
soundwire: optimize sdw_stream_runtime memory layout
soundwire: mipi_disco: add MIPI-specific property_read_bool() helpers
soundwire: Correct some typos in comments
...
|
||
|
Siddharth Menon
|
d00c2359fc |
Docs: Update LSM/apparmor.rst
After the deprecation of CONFIG_DEFAULT_SECURITY, it is no longer used to enable and configure AppArmor. Since kernel 5.0, `CONFIG_SECURITY_APPARMOR_BOOTPARAM_VALUE` is not used either. Instead, the CONFIG_LSM parameter manages the order and selection of LSMs. Signed-off-by: Siddharth Menon <simeddon@gmail.com> Signed-off-by: John Johansen <john.johansen@canonical.com> |
||
|
Linus Torvalds
|
1746db26f8 |
pci-v6.13-changes
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Merge tag 'pci-v6.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull PCI updates from Bjorn Helgaas:
"Enumeration:
- Make pci_stop_dev() and pci_destroy_dev() safe so concurrent
callers can't stop a device multiple times, even as we migrate from
the global pci_rescan_remove_lock to finer-grained locking (Keith
Busch)
- Improve pci_walk_bus() implementation by making it recursive and
moving locking up to avoid need for a 'locked' parameter (Keith
Busch)
- Unexport pci_walk_bus_locked(), which is only used internally by
the PCI core (Keith Busch)
- Detect some Thunderbolt chips that are built-in and hence
'trustworthy' by a heuristic since the 'ExternalFacingPort' and
'usb4-host-interface' ACPI properties are not quite enough (Esther
Shimanovich)
Resource management:
- Use PCI bus addresses (not CPU addresses) in 'ranges' properties
when building dynamic DT nodes so systems where PCI and CPU
addresses differ work correctly (Andrea della Porta)
- Tidy resource sizing and assignment with helpers to reduce
redundancy (Ilpo Järvinen)
- Improve pdev_sort_resources() 'bogus alignment' warning to be more
specific (Ilpo Järvinen)
Driver binding:
- Convert driver .remove_new() callbacks to .remove() again to finish
the conversion from returning 'int' to being 'void' (Sergio
Paracuellos)
- Export pcim_request_all_regions(), a managed interface to request
all BARs (Philipp Stanner)
- Replace pcim_iomap_regions_request_all() with
pcim_request_all_regions(), and pcim_iomap_table()[n] with
pcim_iomap(n), in the following drivers: ahci, crypto qat, crypto
octeontx2, intel_th, iwlwifi, ntb idt, serial rp2, ALSA korg1212
(Philipp Stanner)
- Remove the now unused pcim_iomap_regions_request_all() (Philipp
Stanner)
- Export pcim_iounmap_region(), a managed interface to unmap and
release a PCI BAR (Philipp Stanner)
- Replace pcim_iomap_regions(mask) with pcim_iomap_region(n), and
pcim_iounmap_regions(mask) with pcim_iounmap_region(n), in the
following drivers: fpga dfl-pci, block mtip32xx, gpio-merrifield,
cavium (Philipp Stanner)
Error handling:
- Add sysfs 'reset_subordinate' to reset the entire hierarchy below a
bridge; previously Secondary Bus Reset could only be used when
there was a single device below a bridge (Keith Busch)
- Warn if we reset a running device where the driver didn't register
pci_error_handlers notification callbacks (Keith Busch)
ASPM:
- Disable ASPM L1 before touching L1 PM Substates to follow the spec
closer and avoid a CPU load timeout on some platforms (Ajay
Agarwal)
- Set devices below Intel VMD to D0 before enabling ASPM L1 Substates
as required per spec for all L1 Substates changes (Jian-Hong Pan)
Power management:
- Enable starfive controller runtime PM before probing host bridge
(Mayank Rana)
- Enable runtime power management for host bridges (Krishna chaitanya
chundru)
Power control:
- Use of_platform_device_create() instead of of_platform_populate()
to create pwrctl platform devices so we can control it based on the
child nodes (Manivannan Sadhasivam)
- Create pwrctrl platform devices only if there's a relevant power
supply property (Manivannan Sadhasivam)
- Add device link from the pwrctl supplier to the PCI dev to ensure
pwrctl drivers are probed before the PCI dev driver; this avoids a
race where pwrctl could change device power state while the PCI
driver was active (Manivannan Sadhasivam)
- Find pwrctl device for removal with of_find_device_by_node()
instead of searching all children of the parent (Manivannan
Sadhasivam)
- Rename 'pwrctl' to 'pwrctrl' to match new bandwidth controller
('bwctrl') and hotplug files (Bjorn Helgaas)
Bandwidth control:
- Add read/modify/write locking for Link Control 2, which is used to
manage Link speed (Ilpo Järvinen)
- Extract Link Bandwidth Management Status check into
pcie_lbms_seen(), where it can be shared between the bandwidth
controller and quirks that use it to help retrain failed links
(Ilpo Järvinen)
- Re-add Link Bandwidth notification support with updates to address
the reasons it was previously reverted (Alexandru Gagniuc, Ilpo
Järvinen)
- Add pcie_set_target_speed() and related functionality so drivers
can manage PCIe Link speed based on thermal or other constraints
(Ilpo Järvinen)
- Add a thermal cooling driver to throttle PCIe Links via the
existing thermal management framework (Ilpo Järvinen)
- Add a userspace selftest for the PCIe bandwidth controller (Ilpo
Järvinen)
PCI device hotplug:
- Add hotplug controller driver for Marvell OCTEON multi-function
device where function 0 has a management console interface to
enable/disable and provision various personalities for the other
functions (Shijith Thotton)
- Retain a reference to the pci_bus for the lifetime of a pci_slot to
avoid a use-after-free when the thunderbolt driver resets USB4 host
routers on boot, causing hotplug remove/add of downstream docks or
other devices (Lukas Wunner)
- Remove unused cpcihp struct cpci_hp_controller_ops.hardware_test
(Guilherme Giacomo Simoes)
- Remove unused cpqphp struct ctrl_dbg.ctrl (Christophe JAILLET)
- Use pci_bus_read_dev_vendor_id() instead of hand-coded presence
detection in cpqphp (Ilpo Järvinen)
- Simplify cpqphp enumeration, which is already simple-minded and
doesn't handle devices below hot-added bridges (Ilpo Järvinen)
Virtualization:
- Add ACS quirk for Wangxun FF5xxx NICs, which don't advertise an ACS
capability but do isolate functions as though PCI_ACS_RR and
PCI_ACS_CR were set, so the functions can be in independent IOMMU
groups (Mengyuan Lou)
TLP Processing Hints (TPH):
- Add and document TLP Processing Hints (TPH) support so drivers can
enable and disable TPH and the kernel can save/restore TPH
configuration (Wei Huang)
- Add TPH Steering Tag support so drivers can retrieve Steering Tag
values associated with specific CPUs via an ACPI _DSM to improve
performance by directing DMA writes closer to their consumers (Wei
Huang)
Data Object Exchange (DOE):
- Wait up to 1 second for DOE Busy bit to clear before writing a
request to the mailbox to avoid failures if the mailbox is still
busy from a previous transfer (Gregory Price)
Endpoint framework:
- Skip attempts to allocate from endpoint controller memory window if
the requested size is larger than the window (Damien Le Moal)
- Add and document pci_epc_mem_map() and pci_epc_mem_unmap() to
handle controller-specific size and alignment constraints, and add
test cases to the endpoint test driver (Damien Le Moal)
- Implement dwc pci_epc_ops.align_addr() so pci_epc_mem_map() can
observe DWC-specific alignment requirements (Damien Le Moal)
- Synchronously cancel command handler work in endpoint test before
cleaning up DMA and BARs (Damien Le Moal)
- Respect endpoint page size in dw_pcie_ep_align_addr() (Niklas
Cassel)
- Use dw_pcie_ep_align_addr() in dw_pcie_ep_raise_msi_irq() and
dw_pcie_ep_raise_msix_irq() instead of open coding the equivalent
(Niklas Cassel)
- Avoid NULL dereference if Modem Host Interface Endpoint lacks
'mmio' DT property (Zhongqiu Han)
- Release PCI domain ID of Endpoint controller parent (not controller
itself) and before unregistering the controller, to avoid
use-after-free (Zijun Hu)
- Clear secondary (not primary) EPC in pci_epc_remove_epf() when
removing the secondary controller associated with an NTB (Zijun Hu)
Cadence PCIe controller driver:
- Lower severity of 'phy-names' message (Bartosz Wawrzyniak)
Freescale i.MX6 PCIe controller driver:
- Fix suspend/resume support on i.MX6QDL, which has a hardware
erratum that prevents use of L2 (Stefan Eichenberger)
Intel VMD host bridge driver:
- Add 0xb60b and 0xb06f Device IDs for client SKUs (Nirmal Patel)
MediaTek PCIe Gen3 controller driver:
- Update mediatek-gen3 DT binding to require the exact number of
clocks for each SoC (Fei Shao)
- Add support for DT 'max-link-speed' and 'num-lanes' properties to
restrict the link speed and width (AngeloGioacchino Del Regno)
Microchip PolarFlare PCIe controller driver:
- Add DT and driver support for using either of the two PolarFire
Root Ports (Conor Dooley)
NVIDIA Tegra194 PCIe controller driver:
- Move endpoint controller cleanups that depend on refclk from the
host to the notifier that tells us the host has deasserted PERST#,
when refclk should be valid (Manivannan Sadhasivam)
Qualcomm PCIe controller driver:
- Add qcom SAR2130P DT binding with an additional clock (Dmitry
Baryshkov)
- Enable MSI interrupts if 'global' IRQ is supported, since a
previous commit unintentionally masked them (Manivannan Sadhasivam)
- Move endpoint controller cleanups that depend on refclk from the
host to the notifier that tells us the host has deasserted PERST#,
when refclk should be valid (Manivannan Sadhasivam)
- Add DT binding and driver support for IPQ9574, with Synopsys IP
v5.80a and Qcom IP 1.27.0 (devi priya)
- Move the OPP "operating-points-v2" table from the
qcom,pcie-sm8450.yaml DT binding to qcom,pcie-common.yaml, where it
can be used by other Qcom platforms (Qiang Yu)
- Add 'global' SPI interrupt for events like link-up, link-down to
qcom,pcie-x1e80100 DT binding so we can start enumeration when the
link comes up (Qiang Yu)
- Disable ASPM L0s for qcom,pcie-x1e80100 since the PHY is not tuned
to support this (Qiang Yu)
- Add ops_1_21_0 for SC8280X family SoC, which doesn't use the
'iommu-map' DT property and doesn't need BDF-to-SID translation
(Qiang Yu)
Rockchip PCIe controller driver:
- Define ROCKCHIP_PCIE_AT_SIZE_ALIGN to replace magic 256 endpoint
.align value (Damien Le Moal)
- When unmapping an endpoint window, compute the region index instead
of searching for it, and verify that the address was mapped (Damien
Le Moal)
- When mapping an endpoint window, verify that the address hasn't
been mapped already (Damien Le Moal)
- Implement pci_epc_ops.align_addr() for rockchip-ep (Damien Le Moal)
- Fix MSI IRQ data mapping to observe the alignment constraint, which
fixes intermittent page faults in memcpy_toio() and memcpy_fromio()
(Damien Le Moal)
- Rename rockchip_pcie_parse_ep_dt() to
rockchip_pcie_ep_get_resources() for consistency with similar DT
interfaces (Damien Le Moal)
- Skip the unnecessary link train in rockchip_pcie_ep_probe() and do
it only in the endpoint start operation (Damien Le Moal)
- Implement pci_epc_ops.stop_link() to disable link training and
controller configuration (Damien Le Moal)
- Attempt link training at 5 GT/s when both partners support it
(Damien Le Moal)
- Add a handler for PERST# signal so we can detect host-initiated
resets and start link training after PERST# is deasserted (Damien
Le Moal)
Synopsys DesignWare PCIe controller driver:
- Clear outbound address on unmap so dw_pcie_find_index() won't match
an ATU index that was already unmapped (Damien Le Moal)
- Use of_property_present() instead of of_property_read_bool() when
testing for presence of non-boolean DT properties (Rob Herring)
- Advertise 1MB size if endpoint supports Resizable BARs, which was
inadvertently lost in v6.11 (Niklas Cassel)
TI J721E PCIe driver:
- Add PCIe support for J722S SoC (Siddharth Vadapalli)
- Delay PCIE_T_PVPERL_MS (100 ms), not just PCIE_T_PERST_CLK_US (100
us), before deasserting PERST# to ensure power and refclk are
stable (Siddharth Vadapalli)
TI Keystone PCIe controller driver:
- Set the 'ti,keystone-pcie' mode so v3.65a devices work in Root
Complex mode (Kishon Vijay Abraham I)
- Try to avoid unrecoverable SError for attempts to issue config
transactions when the link is down; this is racy but the best we
can do (Kishon Vijay Abraham I)
Miscellaneous:
- Reorganize kerneldoc parameter names to match order in function
signature (Julia Lawall)
- Fix sysfs reset_method_store() memory leak (Todd Kjos)
- Simplify pci_create_slot() (Ilpo Järvinen)
- Fix incorrect printf format specifiers in pcitest (Luo Yifan)"
* tag 'pci-v6.13-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (127 commits)
PCI: rockchip-ep: Handle PERST# signal in EP mode
PCI: rockchip-ep: Improve link training
PCI: rockship-ep: Implement the pci_epc_ops::stop_link() operation
PCI: rockchip-ep: Refactor endpoint link training enable
PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() MSI-X hiding
PCI: rockchip-ep: Refactor rockchip_pcie_ep_probe() memory allocations
PCI: rockchip-ep: Rename rockchip_pcie_parse_ep_dt()
PCI: rockchip-ep: Fix MSI IRQ data mapping
PCI: rockchip-ep: Implement the pci_epc_ops::align_addr() operation
PCI: rockchip-ep: Improve rockchip_pcie_ep_map_addr()
PCI: rockchip-ep: Improve rockchip_pcie_ep_unmap_addr()
PCI: rockchip-ep: Use a macro to define EP controller .align feature
PCI: rockchip-ep: Fix address translation unit programming
PCI/pwrctrl: Rename pwrctrl functions and structures
PCI/pwrctrl: Rename pwrctl files to pwrctrl
PCI/pwrctl: Remove pwrctl device without iterating over all children of pwrctl parent
PCI/pwrctl: Ensure that pwrctl drivers are probed before PCI client drivers
PCI/pwrctl: Create pwrctl device only if at least one power supply is present
PCI/pwrctl: Use of_platform_device_create() to create pwrctl devices
tools: PCI: Fix incorrect printf format specifiers
...
|
||
|
Linus Torvalds
|
e68ce9474a |
A few late-arriving fixes, plus two more significant changes that were
*almost* ready at the beginning of the merge window:
- A new document on debugging techniques from Sebastian Fricke
- A clarification on MODULE_LICENSE terms meant to head off the sort of
confusion that led to the recent Tuxedo Computers mess.
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Merge tag 'docs-6.13-2' of git://git.lwn.net/linux
Pull more documentation updates from Jonathan Corbet:
"A few late-arriving fixes, plus two more significant changes that were
*almost* ready at the beginning of the merge window:
- A new document on debugging techniques from Sebastian Fricke
- A clarification on MODULE_LICENSE terms meant to head off the sort
of confusion that led to the recent Tuxedo Computers mess"
* tag 'docs-6.13-2' of git://git.lwn.net/linux:
docs: Add debugging guide for the media subsystem
docs: Add debugging section to process
docs/licensing: Clarify wording about "GPL" and "Proprietary"
docs: core-api/gfp_mask-from-fs-io: indicate that vmalloc supports GFP_NOFS/GFP_NOIO
Documentation: kernel-doc: enumerate identifier *type*s
Documentation: pwrseq: Fix trivial misspellings
Documentation: filesystems: update filename extensions
|
||
|
Linus Torvalds
|
fb527fc1f3 |
fuse update for 6.13
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCZ0Rb/wAKCRDh3BK/laaZ PK80AQDAUgA6S5SSrbJxwRFNOhbwtZxZqJ8fomJR5xuWIEQ9pwEAkpFqhBhBW0y1 0YaREow2aDANQQtSUrfPtgva1ZXFwQU= =Cyx5 -----END PGP SIGNATURE----- Merge tag 'fuse-update-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Add page -> folio conversions (Joanne Koong, Josef Bacik) - Allow max size of fuse requests to be configurable with a sysctl (Joanne Koong) - Allow FOPEN_DIRECT_IO to take advantage of async code path (yangyun) - Fix large kernel reads (like a module load) in virtio_fs (Hou Tao) - Fix attribute inconsistency in case readdirplus (and plain lookup in corner cases) is racing with inode eviction (Zhang Tianci) - Fix a WARN_ON triggered by virtio_fs (Asahi Lina) * tag 'fuse-update-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (30 commits) virtiofs: dax: remove ->writepages() callback fuse: check attributes staleness on fuse_iget() fuse: remove pages for requests and exclusively use folios fuse: convert direct io to use folios mm/writeback: add folio_mark_dirty_lock() fuse: convert writebacks to use folios fuse: convert retrieves to use folios fuse: convert ioctls to use folios fuse: convert writes (non-writeback) to use folios fuse: convert reads to use folios fuse: convert readdir to use folios fuse: convert readlink to use folios fuse: convert cuse to use folios fuse: add support in virtio for requests using folios fuse: support folios in struct fuse_args_pages and fuse_copy_pages() fuse: convert fuse_notify_store to use folios fuse: convert fuse_retrieve to use folios fuse: use the folio based vmstat helpers fuse: convert fuse_writepage_need_send to take a folio fuse: convert fuse_do_readpage to use folios ... |
||
|
Linus Torvalds
|
e06635e26c |
slab updates for 6.13
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmdERvEACgkQu+CwddJF iJre6Af9EBMVQiWJrmoMOjbGLqLgmZzSXRNxR862WGn4D/wesA1HmSlWgEn54hgc GIYIeD++v4JaIRNH0yZqb2UBSKjF/rYPDkKstnqgFaVakLoDrwkkwV2n3Gk5BEgR m/SzLGgoDWKR65I/oMpL6e2KrMOfMfjpB31qiVvdlaQd2Nv/5rw+gUVylxhNIZEH W11N3IC+e9hmgT3ZBpTmHeqNrlXE1+USWPrp/HV05Ndz6yf97JnP4Wr9f9pcyN3R aflLHR38+Q9cCfO7y8wNqtYvIV/kbqgdaqD76frSgalC4Lmz9+L+TZ2NuENCPoGj Xdbip2z+iffWhvqM+qooOLVxR0XqTA== =Sepb -----END PGP SIGNATURE----- Merge tag 'slab-for-6.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - Add new slab_strict_numa boot parameter to enforce per-object memory policies on top of slab folio policies, for systems where saving cost of remote accesses is more important than minimizing slab allocation overhead (Christoph Lameter) - Fix for freeptr_offset alignment check being too strict for m68k (Geert Uytterhoeven) - krealloc() fixes for not violating __GFP_ZERO guarantees on krealloc() when slub_debug (redzone and object tracking) is enabled (Feng Tang) - Fix a memory leak in case sysfs registration fails for a slab cache, and also no longer fail to create the cache in that case (Hyeonggon Yoo) - Fix handling of detected consistency problems (due to buggy slab user) with slub_debug enabled, so that it does not cause further list corruption bugs (yuan.gao) - Code cleanup and kerneldocs polishing (Zhen Lei, Vlastimil Babka) * tag 'slab-for-6.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: slab: Fix too strict alignment check in create_cache() mm/slab: Allow cache creation to proceed even if sysfs registration fails mm/slub: Avoid list corruption when removing a slab from the full list mm/slub, kunit: Add testcase for krealloc redzone and zeroing mm/slub: Improve redzone check and zeroing for krealloc() mm/slub: Consider kfence case for get_orig_size() SLUB: Add support for per object memory policies mm, slab: add kerneldocs for common SLAB_ flags mm/slab: remove duplicate check in create_cache() mm/slub: Move krealloc() and related code to slub.c mm/kasan: Don't store metadata inside kmalloc object when slub_debug_orig_size is on |
||
|
Linus Torvalds
|
f5f4745a7f |
- The series "resource: A couple of cleanups" from Andy Shevchenko
performs some cleanups in the resource management code.
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of task_struct.comm[].
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest.
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code.
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification.
- The series "add detect count for hung tasks" from Lance Yang adds more
userspace visibility into the hung-task detector's activity.
- Apart from that, singelton patches in many places - please see the
individual changelogs for details.
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Merge tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- The series "resource: A couple of cleanups" from Andy Shevchenko
performs some cleanups in the resource management code
- The series "Improve the copy of task comm" from Yafang Shao addresses
possible race-induced overflows in the management of
task_struct.comm[]
- The series "Remove unnecessary header includes from
{tools/}lib/list_sort.c" from Kuan-Wei Chiu adds some cleanups and a
small fix to the list_sort library code and to its selftest
- The series "Enhance min heap API with non-inline functions and
optimizations" also from Kuan-Wei Chiu optimizes and cleans up the
min_heap library code
- The series "nilfs2: Finish folio conversion" from Ryusuke Konishi
finishes off nilfs2's folioification
- The series "add detect count for hung tasks" from Lance Yang adds
more userspace visibility into the hung-task detector's activity
- Apart from that, singelton patches in many places - please see the
individual changelogs for details
* tag 'mm-nonmm-stable-2024-11-24-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (71 commits)
gdb: lx-symbols: do not error out on monolithic build
kernel/reboot: replace sprintf() with sysfs_emit()
lib: util_macros_kunit: add kunit test for util_macros.h
util_macros.h: fix/rework find_closest() macros
Improve consistency of '#error' directive messages
ocfs2: fix uninitialized value in ocfs2_file_read_iter()
hung_task: add docs for hung_task_detect_count
hung_task: add detect count for hung tasks
dma-buf: use atomic64_inc_return() in dma_buf_getfile()
fs/proc/kcore.c: fix coccinelle reported ERROR instances
resource: avoid unnecessary resource tree walking in __region_intersects()
ocfs2: remove unused errmsg function and table
ocfs2: cluster: fix a typo
lib/scatterlist: use sg_phys() helper
checkpatch: always parse orig_commit in fixes tag
nilfs2: convert metadata aops from writepage to writepages
nilfs2: convert nilfs_recovery_copy_block() to take a folio
nilfs2: convert nilfs_page_count_clean_buffers() to take a folio
nilfs2: remove nilfs_writepage
nilfs2: convert checkpoint file to be folio-based
...
|
||
|
Linus Torvalds
|
5c00ff742b |
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection algorithm.
This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of shadow
entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in the
hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page into
small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio size
rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel Butt
removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations" from
Mike Rapoport teaches x86 to use large pages for read-only-execute
module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in tests
over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a single
VMA, rather than requiring that multiple VMAs be created for this.
Improved efficiencies for userspace memory allocators are expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP from
the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep is
enabled.
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Merge tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- The series "zram: optimal post-processing target selection" from
Sergey Senozhatsky improves zram's post-processing selection
algorithm. This leads to improved memory savings.
- Wei Yang has gone to town on the mapletree code, contributing several
series which clean up the implementation:
- "refine mas_mab_cp()"
- "Reduce the space to be cleared for maple_big_node"
- "maple_tree: simplify mas_push_node()"
- "Following cleanup after introduce mas_wr_store_type()"
- "refine storing null"
- The series "selftests/mm: hugetlb_fault_after_madv improvements" from
David Hildenbrand fixes this selftest for s390.
- The series "introduce pte_offset_map_{ro|rw}_nolock()" from Qi Zheng
implements some rationaizations and cleanups in the page mapping
code.
- The series "mm: optimize shadow entries removal" from Shakeel Butt
optimizes the file truncation code by speeding up the handling of
shadow entries.
- The series "Remove PageKsm()" from Matthew Wilcox completes the
migration of this flag over to being a folio-based flag.
- The series "Unify hugetlb into arch_get_unmapped_area functions" from
Oscar Salvador implements a bunch of consolidations and cleanups in
the hugetlb code.
- The series "Do not shatter hugezeropage on wp-fault" from Dev Jain
takes away the wp-fault time practice of turning a huge zero page
into small pages. Instead we replace the whole thing with a THP. More
consistent cleaner and potentiall saves a large number of pagefaults.
- The series "percpu: Add a test case and fix for clang" from Andy
Shevchenko enhances and fixes the kernel's built in percpu test code.
- The series "mm/mremap: Remove extra vma tree walk" from Liam Howlett
optimizes mremap() by avoiding doing things which we didn't need to
do.
- The series "Improve the tmpfs large folio read performance" from
Baolin Wang teaches tmpfs to copy data into userspace at the folio
size rather than as individual pages. A 20% speedup was observed.
- The series "mm/damon/vaddr: Fix issue in
damon_va_evenly_split_region()" fro Zheng Yejian fixes DAMON
splitting.
- The series "memcg-v1: fully deprecate charge moving" from Shakeel
Butt removes the long-deprecated memcgv2 charge moving feature.
- The series "fix error handling in mmap_region() and refactor" from
Lorenzo Stoakes cleanup up some of the mmap() error handling and
addresses some potential performance issues.
- The series "x86/module: use large ROX pages for text allocations"
from Mike Rapoport teaches x86 to use large pages for
read-only-execute module text.
- The series "page allocation tag compression" from Suren Baghdasaryan
is followon maintenance work for the new page allocation profiling
feature.
- The series "page->index removals in mm" from Matthew Wilcox remove
most references to page->index in mm/. A slow march towards shrinking
struct page.
- The series "damon/{self,kunit}tests: minor fixups for DAMON debugfs
interface tests" from Andrew Paniakin performs maintenance work for
DAMON's self testing code.
- The series "mm: zswap swap-out of large folios" from Kanchana Sridhar
improves zswap's batching of compression and decompression. It is a
step along the way towards using Intel IAA hardware acceleration for
this zswap operation.
- The series "kasan: migrate the last module test to kunit" from
Sabyrzhan Tasbolatov completes the migration of the KASAN built-in
tests over to the KUnit framework.
- The series "implement lightweight guard pages" from Lorenzo Stoakes
permits userapace to place fault-generating guard pages within a
single VMA, rather than requiring that multiple VMAs be created for
this. Improved efficiencies for userspace memory allocators are
expected.
- The series "memcg: tracepoint for flushing stats" from JP Kobryn uses
tracepoints to provide increased visibility into memcg stats flushing
activity.
- The series "zram: IDLE flag handling fixes" from Sergey Senozhatsky
fixes a zram buglet which potentially affected performance.
- The series "mm: add more kernel parameters to control mTHP" from
Maíra Canal enhances our ability to control/configuremultisize THP
from the kernel boot command line.
- The series "kasan: few improvements on kunit tests" from Sabyrzhan
Tasbolatov has a couple of fixups for the KASAN KUnit tests.
- The series "mm/list_lru: Split list_lru lock into per-cgroup scope"
from Kairui Song optimizes list_lru memory utilization when lockdep
is enabled.
* tag 'mm-stable-2024-11-18-19-27' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (215 commits)
cma: enforce non-zero pageblock_order during cma_init_reserved_mem()
mm/kfence: add a new kunit test test_use_after_free_read_nofault()
zram: fix NULL pointer in comp_algorithm_show()
memcg/hugetlb: add hugeTLB counters to memcg
vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event
mm: mmap_lock: check trace_mmap_lock_$type_enabled() instead of regcount
zram: ZRAM_DEF_COMP should depend on ZRAM
MAINTAINERS/MEMORY MANAGEMENT: add document files for mm
Docs/mm/damon: recommend academic papers to read and/or cite
mm: define general function pXd_init()
kmemleak: iommu/iova: fix transient kmemleak false positive
mm/list_lru: simplify the list_lru walk callback function
mm/list_lru: split the lock to per-cgroup scope
mm/list_lru: simplify reparenting and initial allocation
mm/list_lru: code clean up for reparenting
mm/list_lru: don't export list_lru_add
mm/list_lru: don't pass unnecessary key parameters
kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller
kasan: change kasan_atomics kunit test as KUNIT_CASE_SLOW
kasan: use EXPORT_SYMBOL_IF_KUNIT to export symbols
...
|
||
|
Sebastian Fricke
|
83a474c11e |
docs: Add debugging guide for the media subsystem
Provide a guide for developers on how to debug code with a focus on the media subsystem. This document aims to provide a rough overview over the possibilities and a rational to help choosing the right tool for the given circumstances. Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241028-media_docs_improve_v3-v3-2-edf5c5b3746f@collabora.com |
||
|
Linus Torvalds
|
fcc79e1714 |
Networking changes for 6.13.
The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core
----
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infra is guarded by the CONFIG_DEBUG_NET_SMALL_RTNL
knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read
access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code
--------------------------------------------
- Add small file operations for debugfs, to reduce the struct ops size.
- Refactoring and optimization for the implementation of page_frag API,
This is a preparatory work to consolidate the page_frag
implementation.
Netfilter
---------
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users
the option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent
CI improvements.
BPF
---
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols
---------
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after close,
the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per device
neigh lists.
Driver API
----------
- Introduce a unified interface to configure transmission H/W shaping,
and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling
-----------------
- forwarding: introduce deferred commands, to simplify
the cleanup phase
Drivers
-------
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- adds support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Adds representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- adds support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implements page pool support
- macsec:
- inherit lower device's features and TSO limits when offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- Add the dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- adds clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most significant set of changes is the per netns RTNL. The new
behavior is disabled by default, regression risk should be contained.
Notably the new config knob PTP_1588_CLOCK_VMCLOCK will inherit its
default value from PTP_1588_CLOCK_KVM, as the first is intended to be
a more reliable replacement for the latter.
Core:
- Started a very large, in-progress, effort to make the RTNL lock
scope per network-namespace, thus reducing the lock contention
significantly in the containerized use-case, comprising:
- RCU-ified some relevant slices of the FIB control path
- introduce basic per netns locking helpers
- namespacified the IPv4 address hash table
- remove rtnl_register{,_module}() in favour of
rtnl_register_many()
- refactor rtnl_{new,del,set}link() moving as much validation as
possible out of RTNL lock
- convert all phonet doit() and dumpit() handlers to RCU
- convert IPv4 addresses manipulation to per-netns RTNL
- convert virtual interface creation to per-netns RTNL
the per-netns lock infrastructure is guarded by the
CONFIG_DEBUG_NET_SMALL_RTNL knob, disabled by default ad interim.
- Introduce NAPI suspension, to efficiently switching between busy
polling (NAPI processing suspended) and normal processing.
- Migrate the IPv4 routing input, output and control path from direct
ToS usage to DSCP macros. This is a work in progress to make ECN
handling consistent and reliable.
- Add drop reasons support to the IPv4 rotue input path, allowing
better introspection in case of packets drop.
- Make FIB seqnum lockless, dropping RTNL protection for read access.
- Make inet{,v6} addresses hashing less predicable.
- Allow providing timestamp OPT_ID via cmsg, to correlate TX packets
and timestamps
Things we sprinkled into general kernel code:
- Add small file operations for debugfs, to reduce the struct ops
size.
- Refactoring and optimization for the implementation of page_frag
API, This is a preparatory work to consolidate the page_frag
implementation.
Netfilter:
- Optimize set element transactions to reduce memory consumption
- Extended netlink error reporting for attribute parser failure.
- Make legacy xtables configs user selectable, giving users the
option to configure iptables without enabling any other config.
- Address a lot of false-positive RCU issues, pointed by recent CI
improvements.
BPF:
- Put xsk sockets on a struct diet and add various cleanups. Overall,
this helps to bump performance by 12% for some workloads.
- Extend BPF selftests to increase coverage of XDP features in
combination with BPF cpumap.
- Optimize and homogenize bpf_csum_diff helper for all archs and also
add a batch of new BPF selftests for it.
- Extend netkit with an option to delegate skb->{mark,priority}
scrubbing to its BPF program.
- Make the bpf_get_netns_cookie() helper available also to tc(x) BPF
programs.
Protocols:
- Introduces 4-tuple hash for connected udp sockets, speeding-up
significantly connected sockets lookup.
- Add a fastpath for some TCP timers that usually expires after
close, the socket lock contention.
- Add inbound and outbound xfrm state caches to speed up state
lookups.
- Avoid sending MPTCP advertisements on stale subflows, reducing
risks on loosing them.
- Make neighbours table flushing more scalable, maintaining per
device neigh lists.
Driver API:
- Introduce a unified interface to configure transmission H/W
shaping, and expose it to user-space via generic-netlink.
- Add support for per-NAPI config via netlink. This makes napi
configuration persistent across queues removal and re-creation.
Requires driver updates, currently supported drivers are:
nVidia/Mellanox mlx4 and mlx5, Broadcom brcm and Intel ice.
- Add ethtool support for writing SFP / PHY firmware blocks.
- Track RSS context allocation from ethtool core.
- Implement support for mirroring to DSA CPU port, via TC mirror
offload.
- Consolidate FDB updates notification, to avoid duplicates on
device-specific entries.
- Expose DPLL clock quality level to the user-space.
- Support master-slave PHY config via device tree.
Tests and tooling:
- forwarding: introduce deferred commands, to simplify the cleanup
phase
Drivers:
- Updated several drivers - Amazon vNic, Google vNic, Microsoft vNic,
Intel e1000e and Broadcom Tigon3 - to use netdev-genl to link the
IRQs and queues to NAPI IDs, allowing busy polling and better
introspection.
- Ethernet high-speed NICs:
- nVidia/Mellanox:
- mlx5:
- a large refactor to implement support for cross E-Switch
scheduling
- refactor H/W conter management to let it scale better
- H/W GRO cleanups
- Intel (100G, ice)::
- add support for ethtool reset
- implement support for per TX queue H/W shaping
- AMD/Solarflare:
- implement per device queue stats support
- Broadcom (bnxt):
- improve wildcard l4proto on IPv4/IPv6 ntuple rules
- Marvell Octeon:
- Add representor support for each Resource Virtualization Unit
(RVU) device.
- Hisilicon:
- add support for the BMC Gigabit Ethernet
- IBM (EMAC):
- driver cleanup and modernization
- Cisco (VIC):
- raise the queues number limit to 256
- Ethernet virtual:
- Google vNIC:
- implement page pool support
- macsec:
- inherit lower device's features and TSO limits when
offloading
- virtio_net:
- enable premapped mode by default
- support for XDP socket(AF_XDP) zerocopy TX
- wireguard:
- set the TSO max size to be GSO_MAX_SIZE, to aggregate larger
packets.
- Ethernet NICs embedded and virtual:
- Broadcom ASP:
- enable software timestamping
- Freescale:
- add enetc4 PF driver
- MediaTek: Airoha SoC:
- implement BQL support
- RealTek r8169:
- enable TSO by default on r8168/r8125
- implement extended ethtool stats
- Renesas AVB:
- enable TX checksum offload
- Synopsys (stmmac):
- support header splitting for vlan tagged packets
- move common code for DWMAC4 and DWXGMAC into a separate FPE
module.
- add dwmac driver support for T-HEAD TH1520 SoC
- Synopsys (xpcs):
- driver refactor and cleanup
- TI:
- icssg_prueth: add VLAN offload support
- Xilinx emaclite:
- add clock support
- Ethernet switches:
- Microchip:
- implement support for the lan969x Ethernet switch family
- add LAN9646 switch support to KSZ DSA driver
- Ethernet PHYs:
- Marvel: 88q2x: enable auto negotiation
- Microchip: add support for LAN865X Rev B1 and LAN867X Rev C1/C2
- PTP:
- Add support for the Amazon virtual clock device
- Add PtP driver for s390 clocks
- WiFi:
- mac80211
- EHT 1024 aggregation size for transmissions
- new operation to indicate that a new interface is to be added
- support radio separation of multi-band devices
- move wireless extension spy implementation to libiw
- Broadcom:
- brcmfmac: optional LPO clock support
- Microchip:
- add support for Atmel WILC3000
- Qualcomm (ath12k):
- firmware coredump collection support
- add debugfs support for a multitude of statistics
- Qualcomm (ath5k):
- Arcadyan ARV45XX AR2417 & Gigaset SX76[23] AR241[34]A support
- Realtek:
- rtw88: 8821au and 8812au USB adapters support
- rtw89: add thermal protection
- rtw89: fine tune BT-coexsitence to improve user experience
- rtw89: firmware secure boot for WiFi 6 chip
- Bluetooth
- add Qualcomm WCN785x support for ids Foxconn 0xe0fc/0xe0f3 and
0x13d3:0x3623
- add Realtek RTL8852BE support for id Foxconn 0xe123
- add MediaTek MT7920 support for wireless module ids
- btintel_pcie: add handshake between driver and firmware
- btintel_pcie: add recovery mechanism
- btnxpuart: add GPIO support to power save feature"
* tag 'net-next-6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1475 commits)
mm: page_frag: fix a compile error when kernel is not compiled
Documentation: tipc: fix formatting issue in tipc.rst
selftests: nic_performance: Add selftest for performance of NIC driver
selftests: nic_link_layer: Add selftest case for speed and duplex states
selftests: nic_link_layer: Add link layer selftest for NIC driver
bnxt_en: Add FW trace coredump segments to the coredump
bnxt_en: Add a new ethtool -W dump flag
bnxt_en: Add 2 parameters to bnxt_fill_coredump_seg_hdr()
bnxt_en: Add functions to copy host context memory
bnxt_en: Do not free FW log context memory
bnxt_en: Manage the FW trace context memory
bnxt_en: Allocate backing store memory for FW trace logs
bnxt_en: Add a 'force' parameter to bnxt_free_ctx_mem()
bnxt_en: Refactor bnxt_free_ctx_mem()
bnxt_en: Add mem_valid bit to struct bnxt_ctx_mem_type
bnxt_en: Update firmware interface spec to 1.10.3.85
selftests/bpf: Add some tests with sockmap SK_PASS
bpf: fix recursive lock when verdict program return SK_PASS
wireguard: device: support big tcp GSO
wireguard: selftests: load nf_conntrack if not present
...
|
||
|
Linus Torvalds
|
9f5a6a1fe6 |
media updates for v6.13-rc1
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||
|
Linus Torvalds
|
c3cda60e83 |
Another moderately busy cycle in docsland:
- Work on Chinese translations has picked up again. Happily, they are
maintaining the existing translations and not just adding new ones.
- Some maintenance of the Japanese and Italian translations as well.
- The removal of the venerable "dontdiff" file. It has long outlived its
usefulness and contained entries ("parse.*") that would actively mask
actual source change.
- The addition of enforcement information to the code-of-conduct
documentation.
Along with some build-system fixes and a lot of typo and language fixes.
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Merge tag 'docs-6.13' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Another moderately busy cycle in docsland:
- Work on Chinese translations has picked up again. Happily, they are
maintaining the existing translations and not just adding new ones.
- Some maintenance of the Japanese and Italian translations as well.
- The removal of the venerable "dontdiff" file. It has long outlived
its usefulness and contained entries ("parse.*") that would
actively mask actual source change.
- The addition of enforcement information to the code-of-conduct
documentation.
Along with some build-system fixes and a lot of typo and language
fixes"
* tag 'docs-6.13' of git://git.lwn.net/linux: (52 commits)
Documentation/CoC: spell out enforcement for unacceptable behaviors
docs: fix typos and whitespace in Documentation/process/backporting.rst
docs/zh_CN: fix one sentence in llvm.rst
docs: bug-bisect: add a note about bisecting -next
docs/zh_CN: add the translation of kbuild/llvm.rst
Documentation: Fix incorrect paths/magic in magic numbers rst
Documentation/maintainer-tip: Fix typos
Documentation: Improve crash_kexec_post_notifiers description
Docs/zh_CN: Translate physical_memory.rst to Simplified Chinese
Documentation: admin: reorganize kernel-parameters intro
docs/zh_CN: update the translation of process/programming-language.rst
docs/zh_CN: update the translation of mm/page_owner.rst
docs/zh_CN: update the translation of mm/page_table_check.rst
docs/zh_CN: update the translation of mm/overcommit-accounting.rst
docs/zh_CN: update the translation of mm/admon/faq.rst
docs/zh_CN: update the translation of mm/active_mm.rst
docs/zh_CN: update the translation of mm/hmm.rst
docs: remove Documentation/dontdiff
docs/zh_CN: Add a entry in Chinese glossary
Docs/zh_CN: Fix the pfn calculation error in page_tables.rst
...
|
||
|
Linus Torvalds
|
8cdf2d1903 |
RCU pull request for v6.13
SRCU:
- Introduction of the new SRCU-lite flavour with a new pair of
srcu_read_[un]lock_lite() APIs. In practice the read side using
this flavour becomes lighter by removing a full memory barrier on
LOCK and a full memory barrier on UNLOCK. This comes at the
expense of a higher latency write side with two (in the best case
of a snaphot of unused read-sides) or more RCU grace periods on
the update side which now assumes by itself the whole full
ordering guarantee against the LOCK/UNLOCK counters on both
indexes, along with the accesses performed inside.
Uretprobes is a known potential user.
Note this doesn't replace the default normal flavour of SRCU which
still behaves the same as usual.
- Add testing of SRCU-lite through rcutorture and rcuscale
- Various cleanups on the way.
FIXES:
- Allow short-circuiting RCU-TASKS-RUDE grace periods on architectures
that have sane noinstr boundaries forbidding tracing on low-level
idle and kernel entry code. RCU-TASKS is enough on such configurations
because it involves an RCU grace period that waits for all idle
tasks to either schedule out voluntarily or enter into RCU
unwatched noinstr code.
- Allow and test start_poll_synchronize_rcu() with IRQs disabled.
- Mention rcuog kthreads in relevant documentation and Kconfig help
- Various fixes and consolidations
RCUTORTURE:
- Add --no-affinity on tools to leave the affinity setting of guests
up to the user.
- Add guest_os_delay parameter to rcuscale for better warm-up
control.
- Fix and improve some rcuscale error handling.
- Various cleanups and fixes
STALL:
- Remove dead code
- Stop dumping tasks if a stalled grace period eventually ended
midway as that only produces confusing output.
- Optimize detection of stalling CPUs and avoid useless node
locking otherwise.
NOCB:
- Fix rcu_barrier() hang due to a race against callbacks
deoffloading. This is not yet used, except by rcutorture, and
waits for its promised cpusets interface.
- Remove leftover function declaration
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Merge tag 'rcu.release.v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Frederic Weisbecker:
"SRCU:
- Introduction of the new SRCU-lite flavour with a new pair of
srcu_read_[un]lock_lite() APIs. In practice the read side using
this flavour becomes lighter by removing a full memory barrier on
LOCK and a full memory barrier on UNLOCK. This comes at the expense
of a higher latency write side with two (in the best case of a
snaphot of unused read-sides) or more RCU grace periods on the
update side which now assumes by itself the whole full ordering
guarantee against the LOCK/UNLOCK counters on both indexes, along
with the accesses performed inside.
Uretprobes is a known potential user.
Note this doesn't replace the default normal flavour of SRCU which
still behaves the same as usual.
- Add testing of SRCU-lite through rcutorture and rcuscale
- Various cleanups on the way.
Fixes:
- Allow short-circuiting RCU-TASKS-RUDE grace periods on
architectures that have sane noinstr boundaries forbidding tracing
on low-level idle and kernel entry code. RCU-TASKS is enough on
such configurations because it involves an RCU grace period that
waits for all idle tasks to either schedule out voluntarily or
enter into RCU unwatched noinstr code.
- Allow and test start_poll_synchronize_rcu() with IRQs disabled.
- Mention rcuog kthreads in relevant documentation and Kconfig help
- Various fixes and consolidations
rcutorture:
- Add --no-affinity on tools to leave the affinity setting of guests
up to the user.
- Add guest_os_delay parameter to rcuscale for better warm-up
control.
- Fix and improve some rcuscale error handling.
- Various cleanups and fixes
stall:
- Remove dead code
- Stop dumping tasks if a stalled grace period eventually ended
midway as that only produces confusing output.
- Optimize detection of stalling CPUs and avoid useless node locking
otherwise.
NOCB:
- Fix rcu_barrier() hang due to a race against callbacks
deoffloading. This is not yet used, except by rcutorture, and waits
for its promised cpusets interface.
- Remove leftover function declaration"
* tag 'rcu.release.v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (42 commits)
rcuscale: Remove redundant WARN_ON_ONCE() splat
rcuscale: Do a proper cleanup if kfree_scale_init() fails
srcu: Unconditionally record srcu_read_lock_lite() in ->srcu_reader_flavor
srcu: Check for srcu_read_lock_lite() across all CPUs
srcu: Remove smp_mb() from srcu_read_unlock_lite()
rcutorture: Avoid printing cpu=-1 for no-fault RCU boost failure
rcuscale: Add guest_os_delay module parameter
refscale: Correct affinity check
torture: Add --no-affinity parameter to kvm.sh
rcu/nocb: Fix missed RCU barrier on deoffloading
rcu/kvfree: Fix data-race in __mod_timer / kvfree_call_rcu
rcu/srcutiny: don't return before reenabling preemption
rcu-tasks: Remove open-coded one-byte cmpxchg() emulation
doc: Remove kernel-parameters.txt entry for rcutorture.read_exit
rcutorture: Test start-poll primitives with interrupts disabled
rcu: Permit start_poll_synchronize_rcu*() with interrupts disabled
rcu: Allow short-circuiting of synchronize_rcu_tasks_rude()
doc: Add rcuog kthreads to kernel-per-CPU-kthreads.rst
rcu: Add rcuog kthreads to RCU_NOCB_CPU help text
rcu: Use the BITS_PER_LONG macro
...
|
||
|
Linus Torvalds
|
ba1f9c8fe3 |
arm64 updates for 6.13:
* Support for running Linux in a protected VM under the Arm Confidential
Compute Architecture (CCA)
* Guarded Control Stack user-space support. Current patches follow the
x86 ABI of implicitly creating a shadow stack on clone(). Subsequent
patches (already on the list) will add support for clone3() allowing
finer-grained control of the shadow stack size and placement from libc
* AT_HWCAP3 support (not running out of HWCAP2 bits yet but we are
getting close with the upcoming dpISA support)
* Other arch features:
- In-kernel use of the memcpy instructions, FEAT_MOPS (previously only
exposed to user; uaccess support not merged yet)
- MTE: hugetlbfs support and the corresponding kselftests
- Optimise CRC32 using the PMULL instructions
- Support for FEAT_HAFT enabling ARCH_HAS_NONLEAF_PMD_YOUNG
- Optimise the kernel TLB flushing to use the range operations
- POE/pkey (permission overlays): further cleanups after bringing the
signal handler in line with the x86 behaviour for 6.12
* arm64 perf updates:
- Support for the NXP i.MX91 PMU in the existing IMX driver
- Support for Ampere SoCs in the Designware PCIe PMU driver
- Support for Marvell's 'PEM' PCIe PMU present in the 'Odyssey' SoC
- Support for Samsung's 'Mongoose' CPU PMU
- Support for PMUv3.9 finer-grained userspace counter access control
- Switch back to platform_driver::remove() now that it returns 'void'
- Add some missing events for the CXL PMU driver
* Miscellaneous arm64 fixes/cleanups:
- Page table accessors cleanup: type updates, drop unused macros,
reorganise arch_make_huge_pte() and clean up pte_mkcont(), sanity
check addresses before runtime P4D/PUD folding
- Command line override for ID_AA64MMFR0_EL1.ECV (advertising the
FEAT_ECV for the generic timers) allowing Linux to boot with
firmware deployments that don't set SCTLR_EL3.ECVEn
- ACPI/arm64: tighten the check for the array of platform timer
structures and adjust the error handling procedure in
gtdt_parse_timer_block()
- Optimise the cache flush for the uprobes xol slot (skip if no
change) and other uprobes/kprobes cleanups
- Fix the context switching of tpidrro_el0 when kpti is enabled
- Dynamic shadow call stack fixes
- Sysreg updates
- Various arm64 kselftest improvements
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
- Support for running Linux in a protected VM under the Arm
Confidential Compute Architecture (CCA)
- Guarded Control Stack user-space support. Current patches follow the
x86 ABI of implicitly creating a shadow stack on clone(). Subsequent
patches (already on the list) will add support for clone3() allowing
finer-grained control of the shadow stack size and placement from
libc
- AT_HWCAP3 support (not running out of HWCAP2 bits yet but we are
getting close with the upcoming dpISA support)
- Other arch features:
- In-kernel use of the memcpy instructions, FEAT_MOPS (previously
only exposed to user; uaccess support not merged yet)
- MTE: hugetlbfs support and the corresponding kselftests
- Optimise CRC32 using the PMULL instructions
- Support for FEAT_HAFT enabling ARCH_HAS_NONLEAF_PMD_YOUNG
- Optimise the kernel TLB flushing to use the range operations
- POE/pkey (permission overlays): further cleanups after bringing
the signal handler in line with the x86 behaviour for 6.12
- arm64 perf updates:
- Support for the NXP i.MX91 PMU in the existing IMX driver
- Support for Ampere SoCs in the Designware PCIe PMU driver
- Support for Marvell's 'PEM' PCIe PMU present in the 'Odyssey' SoC
- Support for Samsung's 'Mongoose' CPU PMU
- Support for PMUv3.9 finer-grained userspace counter access
control
- Switch back to platform_driver::remove() now that it returns
'void'
- Add some missing events for the CXL PMU driver
- Miscellaneous arm64 fixes/cleanups:
- Page table accessors cleanup: type updates, drop unused macros,
reorganise arch_make_huge_pte() and clean up pte_mkcont(), sanity
check addresses before runtime P4D/PUD folding
- Command line override for ID_AA64MMFR0_EL1.ECV (advertising the
FEAT_ECV for the generic timers) allowing Linux to boot with
firmware deployments that don't set SCTLR_EL3.ECVEn
- ACPI/arm64: tighten the check for the array of platform timer
structures and adjust the error handling procedure in
gtdt_parse_timer_block()
- Optimise the cache flush for the uprobes xol slot (skip if no
change) and other uprobes/kprobes cleanups
- Fix the context switching of tpidrro_el0 when kpti is enabled
- Dynamic shadow call stack fixes
- Sysreg updates
- Various arm64 kselftest improvements
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (168 commits)
arm64: tls: Fix context-switching of tpidrro_el0 when kpti is enabled
kselftest/arm64: Try harder to generate different keys during PAC tests
kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()
arm64/ptrace: Clarify documentation of VL configuration via ptrace
kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
acpi/arm64: remove unnecessary cast
arm64/mm: Change protval as 'pteval_t' in map_range()
kselftest/arm64: Fix missing printf() argument in gcs/gcs-stress.c
kselftest/arm64: Add FPMR coverage to fp-ptrace
kselftest/arm64: Expand the set of ZA writes fp-ptrace does
kselftets/arm64: Use flag bits for features in fp-ptrace assembler code
kselftest/arm64: Enable build of PAC tests with LLVM=1
kselftest/arm64: Check that SVCR is 0 in signal handlers
selftests/mm: Fix unused function warning for aarch64_write_signal_pkey()
kselftest/arm64: Fix printf() compiler warnings in the arm64 syscall-abi.c tests
kselftest/arm64: Fix printf() warning in the arm64 MTE prctl() test
kselftest/arm64: Fix printf() compiler warnings in the arm64 fp tests
kselftest/arm64: Fix build with stricter assemblers
arm64/scs: Drop unused prototype __pi_scs_patch_vmlinux()
arm64/scs: Deal with 64-bit relative offsets in FDE frames
...
|
||
|
Linus Torvalds
|
70e7730c2a |
vfs-6.13.misc
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Merge tag 'vfs-6.13.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- Fixup and improve NLM and kNFSD file lock callbacks
Last year both GFS2 and OCFS2 had some work done to make their
locking more robust when exported over NFS. Unfortunately, part of
that work caused both NLM (for NFS v3 exports) and kNFSD (for
NFSv4.1+ exports) to no longer send lock notifications to clients
This in itself is not a huge problem because most NFS clients will
still poll the server in order to acquire a conflicted lock
It's important for NLM and kNFSD that they do not block their
kernel threads inside filesystem's file_lock implementations
because that can produce deadlocks. We used to make sure of this by
only trusting that posix_lock_file() can correctly handle blocking
lock calls asynchronously, so the lock managers would only setup
their file_lock requests for async callbacks if the filesystem did
not define its own lock() file operation
However, when GFS2 and OCFS2 grew the capability to correctly
handle blocking lock requests asynchronously, they started
signalling this behavior with EXPORT_OP_ASYNC_LOCK, and the check
for also trusting posix_lock_file() was inadvertently dropped, so
now most filesystems no longer produce lock notifications when
exported over NFS
Fix this by using an fop_flag which greatly simplifies the problem
and grooms the way for future uses by both filesystems and lock
managers alike
- Add a sysctl to delete the dentry when a file is removed instead of
making it a negative dentry
Commit
|
||
|
Mauro Carvalho Chehab
|
72ad4ff638 |
docs: media: update location of the media patches
Due to recent changes on the way we're maintaining media, the location of the main tree was updated. Change docs accordingly. Cc: stable@vger.kernel.org Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> |
||
|
Frederic Weisbecker
|
d8dfba2c60 | Merge branches 'rcu/fixes', 'rcu/nocb', 'rcu/torture', 'rcu/stall' and 'rcu/srcu' into rcu/dev | ||
|
Joshua Hahn
|
05d4532b60 |
memcg/hugetlb: add hugeTLB counters to memcg
This patch introduces a new counter to memory.stat that tracks hugeTLB
usage, only if hugeTLB accounting is done to memory.current. This feature
is enabled the same way hugeTLB accounting is enabled, via the
memory_hugetlb_accounting mount flag for cgroupsv2.
1. Why is this patch necessary?
Currently, memcg hugeTLB accounting is an opt-in feature [1] that adds
hugeTLB usage to memory.current. However, the metric is not reported in
memory.stat. Given that users often interpret memory.stat as a breakdown
of the value reported in memory.current, the disparity between the two
reports can be confusing. This patch solves this problem by including the
metric in memory.stat as well, but only if it is also reported in
memory.current (it would also be confusing if the value was reported in
memory.stat, but not in memory.current)
Aside from the consistency between the two files, we also see benefits in
observability. Userspace might be interested in the hugeTLB footprint of
cgroups for many reasons. For instance, system admins might want to
verify that hugeTLB usage is distributed as expected across tasks: i.e.
memory-intensive tasks are using more hugeTLB pages than tasks that don't
consume a lot of memory, or are seen to fault frequently. Note that this
is separate from wanting to inspect the distribution for limiting purposes
(in which case, hugeTLB controller makes more sense).
2. We already have a hugeTLB controller. Why not use that?
It is true that hugeTLB tracks the exact value that we want. In fact, by
enabling the hugeTLB controller, we get all of the observability benefits
that I mentioned above, and users can check the total hugeTLB usage,
verify if it is distributed as expected, etc.
With this said, there are 2 problems:
(a) They are still not reported in memory.stat, which means the
disparity between the memcg reports are still there.
(b) We cannot reasonably expect users to enable the hugeTLB controller
just for the sake of hugeTLB usage reporting, especially since
they don't have any use for hugeTLB usage enforcing [2].
3. Implementation Details:
In the alloc / free hugetlb functions, we call lruvec_stat_mod_folio
regardless of whether memcg accounts hugetlb. mem_cgroup_commit_charge
which is called from alloc_hugetlb_folio will set memcg for the folio only
if the CGRP_ROOT_MEMORY_HUGETLB_ACCOUNTING cgroup mount option is used, so
lruvec_stat_mod_folio accounts per-memcg hugetlb counters only if the
feature is enabled. Regardless of whether memcg accounts for hugetlb, the
newly added global counter is updated and shown in /proc/vmstat.
The global counter is added because vmstats is the preferred framework for
cgroup stats. It makes stat items consistent between global and cgroups.
It also provides a per-node breakdown, which is useful. Because it does
not use cgroup-specific hooks, we also keep generic MM code separate from
memcg code.
[1] https://lore.kernel.org/all/20231006184629.155543-1-nphamcs@gmail.com/
[2] Of course, we can't make a new patch for every feature that can be
duplicated. However, since the existing solution of enabling the
hugeTLB controller is an imperfect solution that still leaves a
discrepancy between memory.stat and memory.curent, I think that it
is reasonable to isolate the feature in this case.
Link: https://lkml.kernel.org/r/20241101204402.1885383-1-joshua.hahnjy@gmail.com
Signed-off-by: Joshua Hahn <joshua.hahnjy@gmail.com>
Suggested-by: Nhat Pham <nphamcs@gmail.com>
Suggested-by: Shakeel Butt <shakeel.butt@linux.dev>
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Chris Down <chris@chrisdown.name>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Nhat Pham <nphamcs@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Koutný <mkoutny@suse.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Jakub Kicinski
|
a79993b5fc |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR (net-6.12-rc8). Conflicts: tools/testing/selftests/net/.gitignore |
||
|
Catalin Marinas
|
5a4332062e |
Merge branches 'for-next/gcs', 'for-next/probes', 'for-next/asm-offsets', 'for-next/tlb', 'for-next/misc', 'for-next/mte', 'for-next/sysreg', 'for-next/stacktrace', 'for-next/hwcap3', 'for-next/kselftest', 'for-next/crc32', 'for-next/guest-cca', 'for-next/haft' and 'for-next/scs', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf:
perf: Switch back to struct platform_driver::remove()
perf: arm_pmuv3: Add support for Samsung Mongoose PMU
dt-bindings: arm: pmu: Add Samsung Mongoose core compatible
perf/dwc_pcie: Fix typos in event names
perf/dwc_pcie: Add support for Ampere SoCs
ARM: pmuv3: Add missing write_pmuacr()
perf/marvell: Marvell PEM performance monitor support
perf/arm_pmuv3: Add PMUv3.9 per counter EL0 access control
perf/dwc_pcie: Convert the events with mixed case to lowercase
perf/cxlpmu: Support missing events in 3.1 spec
perf: imx_perf: add support for i.MX91 platform
dt-bindings: perf: fsl-imx-ddr: Add i.MX91 compatible
drivers perf: remove unused field pmu_node
* for-next/gcs: (42 commits)
: arm64 Guarded Control Stack user-space support
kselftest/arm64: Fix missing printf() argument in gcs/gcs-stress.c
arm64/gcs: Fix outdated ptrace documentation
kselftest/arm64: Ensure stable names for GCS stress test results
kselftest/arm64: Validate that GCS push and write permissions work
kselftest/arm64: Enable GCS for the FP stress tests
kselftest/arm64: Add a GCS stress test
kselftest/arm64: Add GCS signal tests
kselftest/arm64: Add test coverage for GCS mode locking
kselftest/arm64: Add a GCS test program built with the system libc
kselftest/arm64: Add very basic GCS test program
kselftest/arm64: Always run signals tests with GCS enabled
kselftest/arm64: Allow signals tests to specify an expected si_code
kselftest/arm64: Add framework support for GCS to signal handling tests
kselftest/arm64: Add GCS as a detected feature in the signal tests
kselftest/arm64: Verify the GCS hwcap
arm64: Add Kconfig for Guarded Control Stack (GCS)
arm64/ptrace: Expose GCS via ptrace and core files
arm64/signal: Expose GCS state in signal frames
arm64/signal: Set up and restore the GCS context for signal handlers
arm64/mm: Implement map_shadow_stack()
...
* for-next/probes:
: Various arm64 uprobes/kprobes cleanups
arm64: insn: Simulate nop instruction for better uprobe performance
arm64: probes: Remove probe_opcode_t
arm64: probes: Cleanup kprobes endianness conversions
arm64: probes: Move kprobes-specific fields
arm64: probes: Fix uprobes for big-endian kernels
arm64: probes: Fix simulate_ldr*_literal()
arm64: probes: Remove broken LDR (literal) uprobe support
* for-next/asm-offsets:
: arm64 asm-offsets.c cleanup (remove unused offsets)
arm64: asm-offsets: remove PREEMPT_DISABLE_OFFSET
arm64: asm-offsets: remove DMA_{TO,FROM}_DEVICE
arm64: asm-offsets: remove VM_EXEC and PAGE_SZ
arm64: asm-offsets: remove MM_CONTEXT_ID
arm64: asm-offsets: remove COMPAT_{RT_,SIGFRAME_REGS_OFFSET
arm64: asm-offsets: remove VMA_VM_*
arm64: asm-offsets: remove TSK_ACTIVE_MM
* for-next/tlb:
: TLB flushing optimisations
arm64: optimize flush tlb kernel range
arm64: tlbflush: add __flush_tlb_range_limit_excess()
* for-next/misc:
: Miscellaneous patches
arm64: tls: Fix context-switching of tpidrro_el0 when kpti is enabled
arm64/ptrace: Clarify documentation of VL configuration via ptrace
acpi/arm64: remove unnecessary cast
arm64/mm: Change protval as 'pteval_t' in map_range()
arm64: uprobes: Optimize cache flushes for xol slot
acpi/arm64: Adjust error handling procedure in gtdt_parse_timer_block()
arm64: fix .data.rel.ro size assertion when CONFIG_LTO_CLANG
arm64/ptdump: Test both PTE_TABLE_BIT and PTE_VALID for block mappings
arm64/mm: Sanity check PTE address before runtime P4D/PUD folding
arm64/mm: Drop setting PTE_TYPE_PAGE in pte_mkcont()
ACPI: GTDT: Tighten the check for the array of platform timer structures
arm64/fpsimd: Fix a typo
arm64: Expose ID_AA64ISAR1_EL1.XS to sanitised feature consumers
arm64: Return early when break handler is found on linked-list
arm64/mm: Re-organize arch_make_huge_pte()
arm64/mm: Drop _PROT_SECT_DEFAULT
arm64: Add command-line override for ID_AA64MMFR0_EL1.ECV
arm64: head: Drop SWAPPER_TABLE_SHIFT
arm64: cpufeature: add POE to cpucap_is_possible()
arm64/mm: Change pgattr_change_is_safe() arguments as pteval_t
* for-next/mte:
: Various MTE improvements
selftests: arm64: add hugetlb mte tests
hugetlb: arm64: add mte support
* for-next/sysreg:
: arm64 sysreg updates
arm64/sysreg: Update ID_AA64MMFR1_EL1 to DDI0601 2024-09
* for-next/stacktrace:
: arm64 stacktrace improvements
arm64: preserve pt_regs::stackframe during exec*()
arm64: stacktrace: unwind exception boundaries
arm64: stacktrace: split unwind_consume_stack()
arm64: stacktrace: report recovered PCs
arm64: stacktrace: report source of unwind data
arm64: stacktrace: move dump_backtrace() to kunwind_stack_walk()
arm64: use a common struct frame_record
arm64: pt_regs: swap 'unused' and 'pmr' fields
arm64: pt_regs: rename "pmr_save" -> "pmr"
arm64: pt_regs: remove stale big-endian layout
arm64: pt_regs: assert pt_regs is a multiple of 16 bytes
* for-next/hwcap3:
: Add AT_HWCAP3 support for arm64 (also wire up AT_HWCAP4)
arm64: Support AT_HWCAP3
binfmt_elf: Wire up AT_HWCAP3 at AT_HWCAP4
* for-next/kselftest: (30 commits)
: arm64 kselftest fixes/cleanups
kselftest/arm64: Try harder to generate different keys during PAC tests
kselftest/arm64: Don't leak pipe fds in pac.exec_sign_all()
kselftest/arm64: Corrupt P0 in the irritator when testing SSVE
kselftest/arm64: Add FPMR coverage to fp-ptrace
kselftest/arm64: Expand the set of ZA writes fp-ptrace does
kselftets/arm64: Use flag bits for features in fp-ptrace assembler code
kselftest/arm64: Enable build of PAC tests with LLVM=1
kselftest/arm64: Check that SVCR is 0 in signal handlers
kselftest/arm64: Fix printf() compiler warnings in the arm64 syscall-abi.c tests
kselftest/arm64: Fix printf() warning in the arm64 MTE prctl() test
kselftest/arm64: Fix printf() compiler warnings in the arm64 fp tests
kselftest/arm64: Fix build with stricter assemblers
kselftest/arm64: Test signal handler state modification in fp-stress
kselftest/arm64: Provide a SIGUSR1 handler in the kernel mode FP stress test
kselftest/arm64: Implement irritators for ZA and ZT
kselftest/arm64: Remove unused ADRs from irritator handlers
kselftest/arm64: Correct misleading comments on fp-stress irritators
kselftest/arm64: Poll less often while waiting for fp-stress children
kselftest/arm64: Increase frequency of signal delivery in fp-stress
kselftest/arm64: Fix encoding for SVE B16B16 test
...
* for-next/crc32:
: Optimise CRC32 using PMULL instructions
arm64/crc32: Implement 4-way interleave using PMULL
arm64/crc32: Reorganize bit/byte ordering macros
arm64/lib: Handle CRC-32 alternative in C code
* for-next/guest-cca:
: Support for running Linux as a guest in Arm CCA
arm64: Document Arm Confidential Compute
virt: arm-cca-guest: TSM_REPORT support for realms
arm64: Enable memory encrypt for Realms
arm64: mm: Avoid TLBI when marking pages as valid
arm64: Enforce bounce buffers for realm DMA
efi: arm64: Map Device with Prot Shared
arm64: rsi: Map unprotected MMIO as decrypted
arm64: rsi: Add support for checking whether an MMIO is protected
arm64: realm: Query IPA size from the RMM
arm64: Detect if in a realm and set RIPAS RAM
arm64: rsi: Add RSI definitions
* for-next/haft:
: Support for arm64 FEAT_HAFT
arm64: pgtable: Warn unexpected pmdp_test_and_clear_young()
arm64: Enable ARCH_HAS_NONLEAF_PMD_YOUNG
arm64: Add support for FEAT_HAFT
arm64: setup: name 'tcr2' register
arm64/sysreg: Update ID_AA64MMFR1_EL1 register
* for-next/scs:
: Dynamic shadow call stack fixes
arm64/scs: Drop unused prototype __pi_scs_patch_vmlinux()
arm64/scs: Deal with 64-bit relative offsets in FDE frames
arm64/scs: Fix handling of DWARF augmentation data in CIE/FDE frames
|
||
|
Linus Torvalds
|
4ba05b0e85 |
Hi,
Two bug fixes for TPM bus encryption (the remaining reported issues in the feature). BR, Jarkko -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRE6pSOnaBC00OEHEIaerohdGur0gUCZzT7PQAKCRAaerohdGur 0ny/AP9e6gN+H3lIVQNdbeSKhtBJyWalxOnvAQ4ymjTCyyyqXAD/Ua36HA7FRYxI Ltp2swtz3WcsGgqtRpU+cmcb1Y21DAg= =5kvC -----END PGP SIGNATURE----- Merge tag 'tpmdd-next-6.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull tpm fixes from Jarkko Sakkinen: "Two bug fixes for TPM bus encryption (the remaining reported issues in the feature)" * tag 'tpmdd-next-6.12-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: tpm: Disable TPM on tpm2_create_primary() failure tpm: Opt-in in disable PCR integrity protection |
||
|
Jarkko Sakkinen
|
27184f8905 |
tpm: Opt-in in disable PCR integrity protection
The initial HMAC session feature added TPM bus encryption and/or integrity
protection to various in-kernel TPM operations. This can cause performance
bottlenecks with IMA, as it heavily utilizes PCR extend operations.
In order to mitigate this performance issue, introduce a kernel
command-line parameter to the TPM driver for disabling the integrity
protection for PCR extend operations (i.e. TPM2_PCR_Extend).
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Link: https://lore.kernel.org/linux-integrity/20241015193916.59964-1-zohar@linux.ibm.com/
Fixes:
|
||
|
Paul E. McKenney
|
0a116dc86d |
doc: Remove kernel-parameters.txt entry for rcutorture.read_exit
There is only ever the one read-exit task, and there is no module parameter named rcutorture.read_exit, so remove the bogus documentation. Instead, use rcutorture.read_exit_burst to enable/disable read-exit race testing. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: <bpf@vger.kernel.org> Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Paul E. McKenney
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4fa7f729ce |
doc: Add rcuog kthreads to kernel-per-CPU-kthreads.rst
This commit adds the rcuog kthreads to the list of callback-offloading kthreads that can be affinitied away from worker CPUs. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Thorsten Leemhuis
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f5aff6fa64 |
docs: bug-bisect: add a note about bisecting -next
Explicitly mention how to bisect -next, as nothing in the kernel tree currently explains that bisects between -next versions won't work well and it's better to bisect between mainline and -next. Co-developed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/ec19d5fc503ff7db3d4c4ff9e97fff24cc78f72a.1730808651.git.linux@leemhuis.info |
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Paul E. McKenney
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43349fc4d8 |
rcutorture: Add srcu_read_lock_lite() support to rcutorture.reader_flavor
This commit causes bit 0x4 of rcutorture.reader_flavor to select the new srcu_read_lock_lite() and srcu_read_unlock_lite() functions. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: <bpf@vger.kernel.org> Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Paul E. McKenney
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95a5de2154 |
rcutorture: Add reader_flavor parameter for SRCU readers
This commit adds an rcutorture.reader_flavor parameter whose bits correspond to reader flavors. For example, SRCU's readers are 0x1 for normal and 0x2 for NMI-safe. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: <bpf@vger.kernel.org> Reviewed-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Breno Leitao
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12079a59ce |
net: Implement fault injection forcing skb reallocation
Introduce a fault injection mechanism to force skb reallocation. The primary goal is to catch bugs related to pointer invalidation after potential skb reallocation. The fault injection mechanism aims to identify scenarios where callers retain pointers to various headers in the skb but fail to reload these pointers after calling a function that may reallocate the data. This type of bug can lead to memory corruption or crashes if the old, now-invalid pointers are used. By forcing reallocation through fault injection, we can stress-test code paths and ensure proper pointer management after potential skb reallocations. Add a hook for fault injection in the following functions: * pskb_trim_rcsum() * pskb_may_pull_reason() * pskb_trim() As the other fault injection mechanism, protect it under a debug Kconfig called CONFIG_FAIL_SKB_REALLOC. This patch was *heavily* inspired by Jakub's proposal from: https://lore.kernel.org/all/20240719174140.47a868e6@kernel.org/ CC: Akinobu Mita <akinobu.mita@gmail.com> Suggested-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Guillaume Nault <gnault@redhat.com> Link: https://patch.msgid.link/20241107-fault_v6-v6-1-1b82cb6ecacd@debian.org Signed-off-by: Paolo Abeni <pabeni@redhat.com> |
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Lance Yang
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62bf7065cc |
hung_task: add docs for hung_task_detect_count
This commit introduces documentation for hung_task_detect_count in kernel.rst. Link: https://lkml.kernel.org/r/20241027120747.42833-3-ioworker0@gmail.com Signed-off-by: Mingzhe Yang <mingzhe.yang@ly.com> Signed-off-by: Lance Yang <ioworker0@gmail.com> Cc: Bang Li <libang.li@antgroup.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: David Hildenbrand <david@redhat.com> Cc: Huang Cun <cunhuang@tencent.com> Cc: Joel Granados <j.granados@samsung.com> Cc: Joel Granados <joel.granados@kernel.org> Cc: John Siddle <jsiddle@redhat.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Thomas Weißschuh <linux@weissschuh.net> Cc: Yongliang Gao <leonylgao@tencent.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Maíra Canal
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24f9cd195f |
mm: shmem: override mTHP shmem default with a kernel parameter
Add the ``thp_shmem=`` kernel command line to allow specifying the default policy of each supported shmem hugepage size. The kernel parameter accepts the following format: thp_shmem=<size>[KMG],<size>[KMG]:<policy>;<size>[KMG]-<size>[KMG]:<policy> For example, thp_shmem=16K-64K:always;128K,512K:inherit;256K:advise;1M-2M:never;4M-8M:within_size Some GPUs may benefit from using huge pages. Since DRM GEM uses shmem to allocate anonymous pageable memory, it's essential to control the huge page allocation policy for the internal shmem mount. This control can be achieved through the ``transparent_hugepage_shmem=`` parameter. Beyond just setting the allocation policy, it's crucial to have granular control over the size of huge pages that can be allocated. The GPU may support only specific huge page sizes, and allocating pages larger/smaller than those sizes would be ineffective. Link: https://lkml.kernel.org/r/20241101165719.1074234-6-mcanal@igalia.com Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <ioworker0@gmail.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Maíra Canal
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9490428111 |
mm: shmem: control THP support through the kernel command line
Patch series "mm: add more kernel parameters to control mTHP", v5. This series introduces four patches related to the kernel parameters controlling mTHP and a fifth patch replacing `strcpy()` for `strscpy()` in the file `mm/huge_memory.c`. The first patch is a straightforward documentation update, correcting the format of the kernel parameter ``thp_anon=``. The second, third, and fourth patches focus on controlling THP support for shmem via the kernel command line. The second patch introduces a parameter to control the global default huge page allocation policy for the internal shmem mount. The third patch moves a piece of code to a shared header to ease the implementation of the fourth patch. Finally, the fourth patch implements a parameter similar to ``thp_anon=``, but for shmem. The goal of these changes is to simplify the configuration of systems that rely on mTHP support for shmem. For instance, a platform with a GPU that benefits from huge pages may want to enable huge pages for shmem. Having these kernel parameters streamlines the configuration process and ensures consistency across setups. This patch (of 4): Add a new kernel command line to control the hugepage allocation policy for the internal shmem mount, ``transparent_hugepage_shmem``. The parameter is similar to ``transparent_hugepage`` and has the following format: transparent_hugepage_shmem=<policy> where ``<policy>`` is one of the seven valid policies available for shmem. Configuring the default huge page allocation policy for the internal shmem mount can be beneficial for DRM GPU drivers. Just as CPU architectures, GPUs can also take advantage of huge pages, but this is possible only if DRM GEM objects are backed by huge pages. Since GEM uses shmem to allocate anonymous pageable memory, having control over the default huge page allocation policy allows for the exploration of huge pages use on GPUs that rely on GEM objects backed by shmem. Link: https://lkml.kernel.org/r/20241101165719.1074234-2-mcanal@igalia.com Link: https://lkml.kernel.org/r/20241101165719.1074234-4-mcanal@igalia.com Signed-off-by: Maíra Canal <mcanal@igalia.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Barry Song <baohua@kernel.org> Cc: dri-devel@lists.freedesktop.org Cc: Hugh Dickins <hughd@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: kernel-dev@igalia.com Cc: Lance Yang <ioworker0@gmail.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Mauro Carvalho Chehab
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5516200c46 |
Linux 6.12-rc7
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Merge tag 'v6.12-rc7' into __tmp-hansg-linux-tags_media_atomisp_6_13_1
Linux 6.12-rc7
* tag 'v6.12-rc7': (1909 commits)
Linux 6.12-rc7
filemap: Fix bounds checking in filemap_read()
i2c: designware: do not hold SCL low when I2C_DYNAMIC_TAR_UPDATE is not set
mailmap: add entry for Thorsten Blum
ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
signal: restore the override_rlimit logic
fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
ucounts: fix counter leak in inc_rlimit_get_ucounts()
selftests: hugetlb_dio: check for initial conditions to skip in the start
mm: fix docs for the kernel parameter ``thp_anon=``
mm/damon/core: avoid overflow in damon_feed_loop_next_input()
mm/damon/core: handle zero schemes apply interval
mm/damon/core: handle zero {aggregation,ops_update} intervals
mm/mlock: set the correct prev on failure
objpool: fix to make percpu slot allocation more robust
mm/page_alloc: keep track of free highatomic
bcachefs: Fix UAF in __promote_alloc() error path
bcachefs: Change OPT_STR max to be 1 less than the size of choices array
bcachefs: btree_cache.freeable list fixes
bcachefs: check the invalid parameter for perf test
...
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Barry Song
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aaf2914aec |
mm: add per-order mTHP swpin counters
This helps profile the sizes of folios being swapped in. Currently,
only mTHP swap-out is being counted.
The new interface can be found at:
/sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats
swpin
For example,
cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/swpin
12809
cat /sys/kernel/mm/transparent_hugepage/hugepages-32kB/stats/swpin
4763
[v-songbaohua@oppo.com: add a blank line in doc]
Link: https://lkml.kernel.org/r/20241030233423.80759-1-21cnbao@gmail.com
Link: https://lkml.kernel.org/r/20241026082423.26298-1-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com>
Cc: Usama Arif <usamaarif642@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Kanchana P Sridhar
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0c560dd860 |
mm: swap: count successful large folio zswap stores in hugepage zswpout stats
Added a new MTHP_STAT_ZSWPOUT entry to the sysfs transparent_hugepage stats so that successful large folio zswap stores can be accounted under the per-order sysfs "zswpout" stats: /sys/kernel/mm/transparent_hugepage/hugepages-*kB/stats/zswpout Other non-zswap swap device swap-out events will be counted under the existing sysfs "swpout" stats: /sys/kernel/mm/transparent_hugepage/hugepages-*kB/stats/swpout Also, added documentation for the newly added sysfs per-order hugepage "zswpout" stats. The documentation clarifies that only non-zswap swapouts will be accounted in the existing "swpout" stats. Link: https://lkml.kernel.org/r/20241001053222.6944-8-kanchana.p.sridhar@intel.com Signed-off-by: Kanchana P Sridhar <kanchana.p.sridhar@intel.com> Reviewed-by: Nhat Pham <nphamcs@gmail.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Wajdi Feghali <wajdi.k.feghali@intel.com> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: "Zou, Nanhai" <nanhai.zou@intel.com> Cc: Barry Song <21cnbao@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrew Morton
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2ec0859039 |
Merge branch 'mm-hotfixes-stable' into mm-stable
Pick up
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Barry Song
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e7ac4daeed |
mm: count zeromap read and set for swapout and swapin
When the proportion of folios from the zeromap is small, missing their accounting may not significantly impact profiling. However, it's easy to construct a scenario where this becomes an issue—for example, allocating 1 GB of memory, writing zeros from userspace, followed by MADV_PAGEOUT, and then swapping it back in. In this case, the swap-out and swap-in counts seem to vanish into a black hole, potentially causing semantic ambiguity. On the other hand, Usama reported that zero-filled pages can exceed 10% in workloads utilizing zswap, while Hailong noted that some app in Android have more than 6% zero-filled pages. Before commit |
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Maíra Canal
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652e1a5146 |
mm: fix docs for the kernel parameter `thp_anon=`
If we add ``thp_anon=32,64K:always`` to the kernel command line, we
will see the following error:
[ 0.000000] huge_memory: thp_anon=32,64K:always: error parsing string, ignoring setting
This happens because the correct format isn't ``thp_anon=<size>,<size>[KMG]:<state>```,
as [KMG] must follow each number to especify its unit. So, the correct
format is ``thp_anon=<size>[KMG],<size>[KMG]:<state>```.
Therefore, adjust the documentation to reflect the correct format of the
parameter ``thp_anon=``.
Link: https://lkml.kernel.org/r/20241101165719.1074234-3-mcanal@igalia.com
Fixes:
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Shakeel Butt
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aa6b4fdf59 |
memcg-v1: fully deprecate move_charge_at_immigrate
Patch series "memcg-v1: fully deprecate charge moving". The memcg v1's charge moving feature has been deprecated for almost 2 years and the kernel warns if someone try to use it. This warning has been backported to all stable kernel and there have not been any report of the warning or the request to support this feature anymore. Let's proceed to fully deprecate this feature. This patch (of 6): Proceed with the complete deprecation of memcg v1's charge moving feature. The deprecation warning has been in the kernel for almost two years and has been ported to all stable kernel since. Now is the time to fully deprecate this feature. Link: https://lkml.kernel.org/r/20241025012304.2473312-1-shakeel.butt@linux.dev Link: https://lkml.kernel.org/r/20241025012304.2473312-2-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Hugh Dickins <hughd@google.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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58652f2b6d |
zram: permit only one post-processing operation at a time
Both recompress and writeback soon will unlock slots during processing, which makes things too complex wrt possible race-conditions. We still want to clear PP_SLOT in slot_free, because this is how we figure out that slot that was selected for post-processing has been released under us and when we start post-processing we check if slot still has PP_SLOT set. At the same time, theoretically, we can have something like this: CPU0 CPU1 recompress scan slots set PP_SLOT unlock slot slot_free clear PP_SLOT allocate PP_SLOT writeback scan slots set PP_SLOT unlock slot select PP-slot test PP_SLOT So recompress will not detect that slot has been re-used and re-selected for concurrent writeback post-processing. Make sure that we only permit on post-processing operation at a time. So now recompress and writeback post-processing don't race against each other, we only need to handle slot re-use (slot_free and write), which is handled individually by each pp operation. Having recompress and writeback competing for the same slots is not exactly good anyway (can't imagine anyone doing that). Link: https://lkml.kernel.org/r/20240917021020.883356-3-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Guilherme G. Piccoli
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7d6094e62c |
Documentation: Improve crash_kexec_post_notifiers description
The crash_kexec_post_notifiers description could be improved a bit, by clarifying its upsides (yes, there are some!) and be more descriptive about the downsides, specially mentioning code that enables the option unconditionally, like Hyper-V[0], PowerPC (fadump)[1] and more recently, AMD SEV-SNP[2]. [0] Commit |
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Randy Dunlap
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32643e10df |
Documentation: admin: reorganize kernel-parameters intro
Reorganize the introduction to the kernel-parameters file to place related paragraphs together: - move module info together and near the beginning - add a Special Handling section for dashes, underscores, double quotes, cpu lists, and metric (KMG) suffixes. Expand the KMG suffixes to include TPE as well. - add a Kernel Build Options section Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241029180320.412629-1-rdunlap@infradead.org |
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Christoph Lameter
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f7c80fad6c |
SLUB: Add support for per object memory policies
The old SLAB allocator used to support memory policies on a per
allocation bases. In SLUB the memory policies are applied on a
per page frame / folio bases. Doing so avoids having to check memory
policies in critical code paths for kmalloc and friends.
This worked on general well on Intel/AMD/PowerPC because the
interconnect technology is mature and can minimize the latencies
through intelligent caching even if a small object is not
placed optimally.
However, on ARM we have an emergence of new NUMA interconnect
technology based more on embedded devices. Caching of remote content
can currently be ineffective using the standard building blocks / mesh
available on that platform. Such architectures benefit if each slab
object is individually placed according to memory policies
and other restrictions.
This patch adds another kernel parameter
slab_strict_numa
If that is set then a static branch is activated that will cause
the hotpaths of the allocator to evaluate the current memory
allocation policy. Each object will be properly placed by
paying the price of extra processing and SLUB will no longer
defer to the page allocator to apply memory policies at the
folio level.
This patch improves performance of memcached running
on Ampere Altra 2P system (ARM Neoverse N1 processor)
by 3.6% due to accurate placement of small kernel objects.
Tested-by: Huang Shijie <shijie@os.amperecomputing.com>
Signed-off-by: Christoph Lameter (Ampere) <cl@gentwo.org>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
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Gowthami Thiagarajan
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e1dce56443 |
perf/marvell: Marvell PEM performance monitor support
PCI Express Interface PMU includes various performance counters to monitor the data that is transmitted over the PCIe link. The counters track various inbound and outbound transactions which includes separate counters for posted/non-posted/completion TLPs. Also, inbound and outbound memory read requests along with their latencies can also be monitored. Address Translation Services(ATS)events such as ATS Translation, ATS Page Request, ATS Invalidation along with their corresponding latencies are also supported. The performance counters are 64 bits wide. For instance, perf stat -e ib_tlp_pr <workload> tracks the inbound posted TLPs for the workload. Co-developed-by: Linu Cherian <lcherian@marvell.com> Signed-off-by: Linu Cherian <lcherian@marvell.com> Signed-off-by: Gowthami Thiagarajan <gthiagarajan@marvell.com> Link: https://lore.kernel.org/r/20241028055309.17893-1-gthiagarajan@marvell.com Signed-off-by: Will Deacon <will@kernel.org> |
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Pankaj Raghav
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30dac24e14
|
fs/writeback: convert wbc_account_cgroup_owner to take a folio
Most of the callers of wbc_account_cgroup_owner() are converting a folio to page before calling the function. wbc_account_cgroup_owner() is converting the page back to a folio to call mem_cgroup_css_from_folio(). Convert wbc_account_cgroup_owner() to take a folio instead of a page, and convert all callers to pass a folio directly except f2fs. Convert the page to folio for all the callers from f2fs as they were the only callers calling wbc_account_cgroup_owner() with a page. As f2fs is already in the process of converting to folios, these call sites might also soon be calling wbc_account_cgroup_owner() with a folio directly in the future. No functional changes. Only compile tested. Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> Link: https://lore.kernel.org/r/20240926140121.203821-1-kernel@pankajraghav.com Acked-by: David Sterba <dsterba@suse.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Joanne Koong
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2b3933b1e0 |
fuse: enable dynamic configuration of fuse max pages limit (FUSE_MAX_MAX_PAGES)
Introduce the capability to dynamically configure the max pages limit (FUSE_MAX_MAX_PAGES) through a sysctl. This allows system administrators to dynamically set the maximum number of pages that can be used for servicing requests in fuse. Previously, this is gated by FUSE_MAX_MAX_PAGES which is statically set to 256 pages. One result of this is that the buffer size for a write request is limited to 1 MiB on a 4k-page system. The default value for this sysctl is the original limit (256 pages). $ sysctl -a | grep max_pages_limit fs.fuse.max_pages_limit = 256 $ sysctl -n fs.fuse.max_pages_limit 256 $ echo 1024 | sudo tee /proc/sys/fs/fuse/max_pages_limit 1024 $ sysctl -n fs.fuse.max_pages_limit 1024 $ echo 65536 | sudo tee /proc/sys/fs/fuse/max_pages_limit tee: /proc/sys/fs/fuse/max_pages_limit: Invalid argument $ echo 0 | sudo tee /proc/sys/fs/fuse/max_pages_limit tee: /proc/sys/fs/fuse/max_pages_limit: Invalid argument $ echo 65535 | sudo tee /proc/sys/fs/fuse/max_pages_limit 65535 $ sysctl -n fs.fuse.max_pages_limit 65535 Signed-off-by: Joanne Koong <joannelkoong@gmail.com> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Reviewed-by: Sweet Tea Dorminy <sweettea-kernel@dorminy.me> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> |
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Yafang Shao
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e6957c99dc
|
vfs: Add a sysctl for automated deletion of dentry
Commit |
||
|
Christian Loehle
|
29dcbea924 |
cpufreq: docs: Reflect latency changes in docs
There were two changes related to transition latency recently. Namely commit |
||
|
Luca Boccassi
|
02e2f9aa33 |
ipe: allow secondary and platform keyrings to install/update policies
The current policy management makes it impossible to use IPE in a general purpose distribution. In such cases the users are not building the kernel, the distribution is, and access to the private key included in the trusted keyring is, for obvious reason, not available. This means that users have no way to enable IPE, since there will be no built-in generic policy, and no access to the key to sign updates validated by the trusted keyring. Just as we do for dm-verity, kernel modules and more, allow the secondary and platform keyrings to also validate policies. This allows users enrolling their own keys in UEFI db or MOK to also sign policies, and enroll them. This makes it sensible to enable IPE in general purpose distributions, as it becomes usable by any user wishing to do so. Keys in these keyrings can already load kernels and kernel modules, so there is no security downgrade. Add a kconfig each, like dm-verity does, but default to enabled if the dependencies are available. Signed-off-by: Luca Boccassi <bluca@debian.org> Reviewed-by: Serge Hallyn <serge@hallyn.com> [FW: fixed some style issues] Signed-off-by: Fan Wu <wufan@kernel.org> |
||
|
Luca Boccassi
|
5ceecb301e |
ipe: also reject policy updates with the same version
Currently IPE accepts an update that has the same version as the policy being updated, but it doesn't make it a no-op nor it checks that the old and new policyes are the same. So it is possible to change the content of a policy, without changing its version. This is very confusing from userspace when managing policies. Instead change the update logic to reject updates that have the same version with ESTALE, as that is much clearer and intuitive behaviour. Signed-off-by: Luca Boccassi <bluca@debian.org> Reviewed-by: Serge Hallyn <serge@hallyn.com> Signed-off-by: Fan Wu <wufan@kernel.org> |
||
|
Tomi Valkeinen
|
40249b1d5b |
media: admin-guide: Document the Raspberry Pi CFE (rp1-cfe)
Add documentation for rp1-cfe driver. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
||
|
Steven Rostedt
|
f7e1d19105 |
Documentation/tracing: Mention that RESET_ATTACK_MITIGATION can clear memory
At the 2024 Linux Plumbers Conference, I was talking with Hans de Goede about the persistent buffer to display traces from previous boots. He mentioned that UEFI can clear memory. In my own tests I have not seen this. He later informed me that it requires the config option: CONFIG_RESET_ATTACK_MITIGATION It appears that setting this will allow the memory to be cleared on boot up, which will definitely clear out the trace of the previous boot. Add this information under the trace_instance in kernel-parameters.txt to let people know that this can cause issues. Link: https://lore.kernel.org/all/20170825155019.6740-2-ard.biesheuvel@linaro.org/ Reported-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20241007131653.35837081@gandalf.local.home |
||
|
Pierre-Louis Bossart
|
cbcb7edd09 |
soundwire: intel_auxdevice: add kernel parameter for mclk divider
Add a kernel parameter to work-around discrepancies between hardware and platform firmware, it's not unusual to see e.g. 38.4MHz listed in _DSD properties as the SoundWire clock source, but the hardware may be based on a 19.2 MHz mclk source. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Link: https://lore.kernel.org/r/20241004021850.9758-1-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
||
|
Hans Verkuil
|
95397784be |
media: staging: drop omap4iss
The omap4 camera driver has seen no progress since forever, and now OMAP4 support has also been dropped from u-boot (1). So it is time to retire this driver. (1): https://lists.denx.de/pipermail/u-boot/2024-July/558846.html Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
||
|
Mark Brown
|
a94452112c |
arm64/idreg: Add overrride for GCS
Hook up an override for GCS, allowing it to be disabled from the command line by specifying arm64.nogcs in case there are problems. Reviewed-by: Thiago Jung Bauermann <thiago.bauermann@linaro.org> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20241001-arm64-gcs-v13-17-222b78d87eee@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
||
|
Wei Huang
|
f69767a1ad |
PCI: Add TLP Processing Hints (TPH) support
Add support for PCIe TLP Processing Hints (TPH) support (see PCIe r6.2, sec 6.17). Add TPH register definitions in pci_regs.h, including the TPH Requester capability register, TPH Requester control register, TPH Completer capability, and the ST fields of MSI-X entry. Introduce pcie_enable_tph() and pcie_disable_tph(), enabling drivers to toggle TPH support and configure specific ST mode as needed. Also add a new kernel parameter, "pci=notph", allowing users to disable TPH support across the entire system. Link: https://lore.kernel.org/r/20241002165954.128085-2-wei.huang2@amd.com Co-developed-by: Jing Liu <jing2.liu@intel.com> Co-developed-by: Paul Luse <paul.e.luse@linux.intel.com> Co-developed-by: Eric Van Tassell <Eric.VanTassell@amd.com> Signed-off-by: Jing Liu <jing2.liu@intel.com> Signed-off-by: Paul Luse <paul.e.luse@linux.intel.com> Signed-off-by: Eric Van Tassell <Eric.VanTassell@amd.com> Signed-off-by: Wei Huang <wei.huang2@amd.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com> Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com> Reviewed-by: Andy Gospodarek <andrew.gospodarek@broadcom.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lukas Wunner <lukas@wunner.de> |
||
|
Linus Torvalds
|
3efc57369a |
x86:
* KVM currently invalidates the entirety of the page tables, not just
those for the memslot being touched, when a memslot is moved or deleted.
The former does not have particularly noticeable overhead, but Intel's
TDX will require the guest to re-accept private pages if they are
dropped from the secure EPT, which is a non starter. Actually,
the only reason why this is not already being done is a bug which
was never fully investigated and caused VM instability with assigned
GeForce GPUs, so allow userspace to opt into the new behavior.
* Advertise AVX10.1 to userspace (effectively prep work for the "real" AVX10
functionality that is on the horizon).
* Rework common MSR handling code to suppress errors on userspace accesses to
unsupported-but-advertised MSRs. This will allow removing (almost?) all of
KVM's exemptions for userspace access to MSRs that shouldn't exist based on
the vCPU model (the actual cleanup is non-trivial future work).
* Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC) splits the
64-bit value into the legacy ICR and ICR2 storage, whereas Intel (APICv)
stores the entire 64-bit value at the ICR offset.
* Fix a bug where KVM would fail to exit to userspace if one was triggered by
a fastpath exit handler.
* Add fastpath handling of HLT VM-Exit to expedite re-entering the guest when
there's already a pending wake event at the time of the exit.
* Fix a WARN caused by RSM entering a nested guest from SMM with invalid guest
state, by forcing the vCPU out of guest mode prior to signalling SHUTDOWN
(the SHUTDOWN hits the VM altogether, not the nested guest)
* Overhaul the "unprotect and retry" logic to more precisely identify cases
where retrying is actually helpful, and to harden all retry paths against
putting the guest into an infinite retry loop.
* Add support for yielding, e.g. to honor NEED_RESCHED, when zapping rmaps in
the shadow MMU.
* Refactor pieces of the shadow MMU related to aging SPTEs in prepartion for
adding multi generation LRU support in KVM.
* Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is enabled,
i.e. when the CPU has already flushed the RSB.
* Trace the per-CPU host save area as a VMCB pointer to improve readability
and cleanup the retrieval of the SEV-ES host save area.
* Remove unnecessary accounting of temporary nested VMCB related allocations.
* Set FINAL/PAGE in the page fault error code for EPT violations if and only
if the GVA is valid. If the GVA is NOT valid, there is no guest-side page
table walk and so stuffing paging related metadata is nonsensical.
* Fix a bug where KVM would incorrectly synthesize a nested VM-Exit instead of
emulating posted interrupt delivery to L2.
* Add a lockdep assertion to detect unsafe accesses of vmcs12 structures.
* Harden eVMCS loading against an impossible NULL pointer deref (really truly
should be impossible).
* Minor SGX fix and a cleanup.
* Misc cleanups
Generic:
* Register KVM's cpuhp and syscore callbacks when enabling virtualization in
hardware, as the sole purpose of said callbacks is to disable and re-enable
virtualization as needed.
* Enable virtualization when KVM is loaded, not right before the first VM
is created. Together with the previous change, this simplifies a
lot the logic of the callbacks, because their very existence implies
virtualization is enabled.
* Fix a bug that results in KVM prematurely exiting to userspace for coalesced
MMIO/PIO in many cases, clean up the related code, and add a testcase.
* Fix a bug in kvm_clear_guest() where it would trigger a buffer overflow _if_
the gpa+len crosses a page boundary, which thankfully is guaranteed to not
happen in the current code base. Add WARNs in more helpers that read/write
guest memory to detect similar bugs.
Selftests:
* Fix a goof that caused some Hyper-V tests to be skipped when run on bare
metal, i.e. NOT in a VM.
* Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES guest.
* Explicitly include one-off assets in .gitignore. Past Sean was completely
wrong about not being able to detect missing .gitignore entries.
* Verify userspace single-stepping works when KVM happens to handle a VM-Exit
in its fastpath.
* Misc cleanups
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull x86 kvm updates from Paolo Bonzini:
"x86:
- KVM currently invalidates the entirety of the page tables, not just
those for the memslot being touched, when a memslot is moved or
deleted.
This does not traditionally have particularly noticeable overhead,
but Intel's TDX will require the guest to re-accept private pages
if they are dropped from the secure EPT, which is a non starter.
Actually, the only reason why this is not already being done is a
bug which was never fully investigated and caused VM instability
with assigned GeForce GPUs, so allow userspace to opt into the new
behavior.
- Advertise AVX10.1 to userspace (effectively prep work for the
"real" AVX10 functionality that is on the horizon)
- Rework common MSR handling code to suppress errors on userspace
accesses to unsupported-but-advertised MSRs
This will allow removing (almost?) all of KVM's exemptions for
userspace access to MSRs that shouldn't exist based on the vCPU
model (the actual cleanup is non-trivial future work)
- Rework KVM's handling of x2APIC ICR, again, because AMD (x2AVIC)
splits the 64-bit value into the legacy ICR and ICR2 storage,
whereas Intel (APICv) stores the entire 64-bit value at the ICR
offset
- Fix a bug where KVM would fail to exit to userspace if one was
triggered by a fastpath exit handler
- Add fastpath handling of HLT VM-Exit to expedite re-entering the
guest when there's already a pending wake event at the time of the
exit
- Fix a WARN caused by RSM entering a nested guest from SMM with
invalid guest state, by forcing the vCPU out of guest mode prior to
signalling SHUTDOWN (the SHUTDOWN hits the VM altogether, not the
nested guest)
- Overhaul the "unprotect and retry" logic to more precisely identify
cases where retrying is actually helpful, and to harden all retry
paths against putting the guest into an infinite retry loop
- Add support for yielding, e.g. to honor NEED_RESCHED, when zapping
rmaps in the shadow MMU
- Refactor pieces of the shadow MMU related to aging SPTEs in
prepartion for adding multi generation LRU support in KVM
- Don't stuff the RSB after VM-Exit when RETPOLINE=y and AutoIBRS is
enabled, i.e. when the CPU has already flushed the RSB
- Trace the per-CPU host save area as a VMCB pointer to improve
readability and cleanup the retrieval of the SEV-ES host save area
- Remove unnecessary accounting of temporary nested VMCB related
allocations
- Set FINAL/PAGE in the page fault error code for EPT violations if
and only if the GVA is valid. If the GVA is NOT valid, there is no
guest-side page table walk and so stuffing paging related metadata
is nonsensical
- Fix a bug where KVM would incorrectly synthesize a nested VM-Exit
instead of emulating posted interrupt delivery to L2
- Add a lockdep assertion to detect unsafe accesses of vmcs12
structures
- Harden eVMCS loading against an impossible NULL pointer deref
(really truly should be impossible)
- Minor SGX fix and a cleanup
- Misc cleanups
Generic:
- Register KVM's cpuhp and syscore callbacks when enabling
virtualization in hardware, as the sole purpose of said callbacks
is to disable and re-enable virtualization as needed
- Enable virtualization when KVM is loaded, not right before the
first VM is created
Together with the previous change, this simplifies a lot the logic
of the callbacks, because their very existence implies
virtualization is enabled
- Fix a bug that results in KVM prematurely exiting to userspace for
coalesced MMIO/PIO in many cases, clean up the related code, and
add a testcase
- Fix a bug in kvm_clear_guest() where it would trigger a buffer
overflow _if_ the gpa+len crosses a page boundary, which thankfully
is guaranteed to not happen in the current code base. Add WARNs in
more helpers that read/write guest memory to detect similar bugs
Selftests:
- Fix a goof that caused some Hyper-V tests to be skipped when run on
bare metal, i.e. NOT in a VM
- Add a regression test for KVM's handling of SHUTDOWN for an SEV-ES
guest
- Explicitly include one-off assets in .gitignore. Past Sean was
completely wrong about not being able to detect missing .gitignore
entries
- Verify userspace single-stepping works when KVM happens to handle a
VM-Exit in its fastpath
- Misc cleanups"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (127 commits)
Documentation: KVM: fix warning in "make htmldocs"
s390: Enable KVM_S390_UCONTROL config in debug_defconfig
selftests: kvm: s390: Add VM run test case
KVM: SVM: let alternatives handle the cases when RSB filling is required
KVM: VMX: Set PFERR_GUEST_{FINAL,PAGE}_MASK if and only if the GVA is valid
KVM: x86/mmu: Use KVM_PAGES_PER_HPAGE() instead of an open coded equivalent
KVM: x86/mmu: Add KVM_RMAP_MANY to replace open coded '1' and '1ul' literals
KVM: x86/mmu: Fold mmu_spte_age() into kvm_rmap_age_gfn_range()
KVM: x86/mmu: Morph kvm_handle_gfn_range() into an aging specific helper
KVM: x86/mmu: Honor NEED_RESCHED when zapping rmaps and blocking is allowed
KVM: x86/mmu: Add a helper to walk and zap rmaps for a memslot
KVM: x86/mmu: Plumb a @can_yield parameter into __walk_slot_rmaps()
KVM: x86/mmu: Move walk_slot_rmaps() up near for_each_slot_rmap_range()
KVM: x86/mmu: WARN on MMIO cache hit when emulating write-protected gfn
KVM: x86/mmu: Detect if unprotect will do anything based on invalid_list
KVM: x86/mmu: Subsume kvm_mmu_unprotect_page() into the and_retry() version
KVM: x86: Rename reexecute_instruction()=>kvm_unprotect_and_retry_on_failure()
KVM: x86: Update retry protection fields when forcing retry on emulation failure
KVM: x86: Apply retry protection to "unprotect on failure" path
KVM: x86: Check EMULTYPE_WRITE_PF_TO_SP before unprotecting gfn
...
|
||
|
Linus Torvalds
|
e477dba544 |
- Misc VDO fixes
- Remove unused declarations dm_get_rq_mapinfo() and dm_zone_map_bio() - Dm-delay: Improve kernel documentation - Dm-crypt: Allow to specify the integrity key size as an option - Dm-bufio: Remove pointless NULL check - Small code cleanups: Use ERR_CAST; remove unlikely() around IS_ERR; use __assign_bit - Dm-integrity: Fix gcc 5 warning; convert comma to semicolon; fix smatch warning - Dm-integrity: Support recalculation in the 'I' mode - Revert "dm: requeue IO if mapping table not yet available" - Dm-crypt: Small refactoring to make the code more readable - Dm-cache: Remove pointless error check - Dm: Fix spelling errors - Dm-verity: Restart or panic on an I/O error if restart or panic was requested - Dm-verity: Fallback to platform keyring also if key in trusted keyring is rejected -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRnH8MwLyZDhyYfesYTAyx9YGnhbQUCZvapzRQcbXBhdG9ja2FA cmVkaGF0LmNvbQAKCRATAyx9YGnhbdKAAP4gHNU7aRmwTPcmvytEqBO4Pcz4eGB/ tytj2+o1orph3AD/YD2X75YHOrdNKTLq+N0ecetAt0yDVUnJAUtKiOnx6Q8= =0f9T -----END PGP SIGNATURE----- Merge tag 'for-6.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mikulas Patocka: - Misc VDO fixes - Remove unused declarations dm_get_rq_mapinfo() and dm_zone_map_bio() - Dm-delay: Improve kernel documentation - Dm-crypt: Allow to specify the integrity key size as an option - Dm-bufio: Remove pointless NULL check - Small code cleanups: Use ERR_CAST; remove unlikely() around IS_ERR; use __assign_bit - Dm-integrity: Fix gcc 5 warning; convert comma to semicolon; fix smatch warning - Dm-integrity: Support recalculation in the 'I' mode - Revert "dm: requeue IO if mapping table not yet available" - Dm-crypt: Small refactoring to make the code more readable - Dm-cache: Remove pointless error check - Dm: Fix spelling errors - Dm-verity: Restart or panic on an I/O error if restart or panic was requested - Dm-verity: Fallback to platform keyring also if key in trusted keyring is rejected * tag 'for-6.12/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (26 commits) dm verity: fallback to platform keyring also if key in trusted keyring is rejected dm-verity: restart or panic on an I/O error dm: fix spelling errors dm-cache: remove pointless error check dm vdo: handle unaligned discards correctly dm vdo indexer: Convert comma to semicolon dm-crypt: Use common error handling code in crypt_set_keyring_key() dm-crypt: Use up_read() together with key_put() only once in crypt_set_keyring_key() Revert "dm: requeue IO if mapping table not yet available" dm-integrity: check mac_size against HASH_MAX_DIGESTSIZE in sb_mac() dm-integrity: support recalculation in the 'I' mode dm integrity: Convert comma to semicolon dm integrity: fix gcc 5 warning dm: Make use of __assign_bit() API dm integrity: Remove extra unlikely helper dm: Convert to use ERR_CAST() dm bufio: Remove NULL check of list_entry() dm-crypt: Allow to specify the integrity key size as option dm: Remove unused declaration and empty definition "dm_zone_map_bio" dm delay: enhance kernel documentation ... |
||
|
Linus Torvalds
|
abf2050f51 |
media updates for v6.12-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmbxByQACgkQCF8+vY7k 4RUWeg//QHB1sjjYsRs0IF6wBdzxWwpjqudxLjUTDEMKHVHUuCPRzMayZrokfTha /NOt+SSKpZqRtCjKuyLz7lup81b+oFXQ4CKChXJvLVJ+wuFFd/B9fbs3yw5fCWFk odHjVUpLOqdDSOHcqisKwim0ENzvJ4/rvFiiWUPqPJbjWYEyXX4eW3F8JlAXkdkI OGX9ixPsdAG2vdXpIsp3T3/KKTo7qwM6j/ckQ4SxkrTHMMdvJrkl3HutibaqOmOq FcR4Y9XSkBsNlrJ9CvG/uOSz5aQrY7A7s21OiH59FFyeOWsvKGFkLmAox/+M6vg8 G/cjZjK3AiDll2fmAWo33MuyQG9HOTEFjWNN3cusr1gTcFowqH+cIjV3SKa1dH/1 G+4KoOzJdkFrt1Y21zg+tWejoOjdPpklTiSAhgYRSblqsMbr3XF0cOqnSs5JOKo3 ZgMko/JEI0CKltYc7kcTy8w6fg3g8B9RJ7nATgsKEQsln1hEy/Bii482tk6vbb9g 7YLAzrExWnLjxOxco/LzHcBkQMov6/HA5ntEMieaybRcMPsXE8WNA2ElNOFOREgP MSWqoQD+7CuqYRnmfpQw2SPA0nRy2BT4ltITsA/ksfBWLvoK8UX99eiznkpWSm7p 191mGPalKV07RUVXgXRTynTvfma6oTKIaebvPLoVaKg11cC5hq0= =TPMV -----END PGP SIGNATURE----- Merge tag 'media/v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - New CEC driver: Extron DA HD 4K Plus - Lots of driver fixes, cleanups and improvements * tag 'media/v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (179 commits) media: atomisp: Use clamp() in ia_css_eed1_8_vmem_encode() media: atomisp: Fix eed1_8 code assigning signed values to an unsigned variable media: atomisp: set lock before calling vb2_queue_init() media: atomisp: Improve binary finding debug logging media: atomisp: Drop dev_dbg() calls from hmm_[alloc|free]() media: atomisp: csi2-bridge: Add DMI quirk for t4ka3 on Xiaomi Mipad2 media: atomisp: add missing wait_prepare/finish ops media: atomisp: Remove unused declaration media: atomisp: use clamp() in compute_coring() media: atomisp: use clamp() in ia_css_eed1_8_encode() media: atomisp: Simplify ia_css_pipe_create_cas_scaler_desc_single_output() media: atomisp: Replace rarely used macro from math_support.h media: atomisp: Remove duplicated leftover, i.e. sh_css_dvs_info.h media: atomisp: bnr: fix trailing statement media: atomisp: move trailing */ to separate lines media: atomisp: move trailing statement to next line. media: atomisp: Fix trailing statement in ia_css_de.host.c media: atomisp: Fix spelling mistakes in atomisp.h media: atomisp: Fix spelling mistakes in atomisp_platform.h media: atomisp: Fix spelling mistake in csi_rx_public.h ... |
||
|
Linus Torvalds
|
af9c191ac2 |
ring-buffer: Updates for v6.12:
- Merged v6.11-rc3 into trace/ring-buffer/core
The v6.10 ring buffer pull request was not made due to Mathieu Desnoyers
making a comment to the pull request. Mathieu and I resolved it on IRC,
but we did not let Linus know that it was resolved. Linus did not do the
pull thinking it still had some unresolved issues.
The ring buffer work for 6.12 was dependent on both this pull request as
well as the reserve_mem kernel command line option that was going upstream
through the memory management tree. The ring buffer repo was being used by
others so it could not be rebased. In order to continue the work, the
v6.11-rc3 branch was pulled in to get access to the reserve_mem work.
This has the 6.11 pull request that did not make it into 6.11, which was:
tracing/ring-buffer: Have persistent buffer across reboots
This allows for the tracing instance ring buffer to stay persistent across
reboots. The way this is done is by adding to the kernel command line:
trace_instance=boot_map@0x285400000:12M
This will reserve 12 megabytes at the address 0x285400000, and then map
the tracing instance "boot_map" ring buffer to that memory. This will
appear as a normal instance in the tracefs system:
/sys/kernel/tracing/instances/boot_map
A user could enable tracing in that instance, and on reboot or kernel
crash, if the memory is not wiped by the firmware, it will recreate the
trace in that instance. For example, if one was debugging a shutdown of a
kernel reboot:
# cd /sys/kernel/tracing
# echo function > instances/boot_map/current_tracer
# reboot
[..]
# cd /sys/kernel/tracing
# tail instances/boot_map/trace
swapper/0-1 [000] d..1. 164.549800: restore_boot_irq_mode <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549801: native_restore_boot_irq_mode <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549802: disconnect_bsp_APIC <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549811: hpet_disable <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549812: iommu_shutdown_noop <-native_machine_restart
swapper/0-1 [000] d..1. 164.549813: native_machine_emergency_restart <-__do_sys_reboot
swapper/0-1 [000] d..1. 164.549813: tboot_shutdown <-native_machine_emergency_restart
swapper/0-1 [000] d..1. 164.549820: acpi_reboot <-native_machine_emergency_restart
swapper/0-1 [000] d..1. 164.549821: acpi_reset <-acpi_reboot
swapper/0-1 [000] d..1. 164.549822: acpi_os_write_port <-acpi_reboot
On reboot, the buffer is examined to make sure it is valid. The validation
check even steps through every event to make sure the meta data of the
event is correct. If any test fails, it will simply reset the buffer, and
the buffer will be empty on boot.
The new changes for 6.12 are:
- Allow the tracing persistent boot buffer to use the "reserve_mem" option
Instead of having the admin find a physical address to store the persistent
buffer, which can be very tedious if they have to administrate several
different machines, allow them to use the "reserve_mem" option that will
find a location for them. It is not as reliable because of KASLR, as the
loading of the kernel in different locations can cause the memory
allocated to be inconsistent. Booting with "nokaslr" can make reserve_mem
more reliable.
- Have function graph tracer handle offsets from a previous boot.
The ring buffer output from a previous boot may have different addresses
due to kaslr. Have the function graph tracer handle these by using the
delta from the previous boot to the new boot address space.
- Only reset the saved meta offset when the buffer is started or reset
In the persistent memory meta data, it holds the previous address space
information, so that it can calculate the delta to have function tracing
work. But this gets updated after being read to hold the new address
space. But if the buffer isn't used for that boot, on reboot, the delta is
now calculated from the previous boot and not the boot that holds the data
in the ring buffer. This causes the functions not to be shown. Do not save
the address space information of the current kernel until it is being
recorded.
- Add a magic variable to test the valid meta data
Add a magic variable in the meta data that can also be used for
validation. The validator of the previous buffer doesn't need this magic
data, but it can be used if the meta data is changed by a new kernel, which
may have the same format that passes the validator but is used
differently. This magic number can also be used as a "versioning" of the
meta data.
- Align user space mapped ring buffer sub buffers to improve TLB entries
Linus mentioned that the mapped ring buffer sub buffers were misaligned
between the meta page and the sub-buffers, so that if the sub-buffers were
bigger than PAGE_SIZE, it wouldn't allow the TLB to use bigger entries.
- Add new kernel command line "traceoff" to disable tracing on boot for instances
If tracing is enabled for a boot instance, there needs a way to be able to
disable it on boot so that new events do not get entered into the ring
buffer and be mixed with events from a previous boot, as that can be
confusing.
- Allow trace_printk() to go to other instances
Currently, trace_printk() can only go to the top level instance. When
debugging with a persistent buffer, it is really useful to be able to add
trace_printk() to go to that buffer, so that you have access to them after
a crash.
- Do not use "bin_printk()" for traces to a boot instance
The bin_printk() saves only a pointer to the printk format in the ring
buffer, as the reader of the buffer can still have access to it. But this
is not the case if the buffer is from a previous boot. If the
trace_printk() is going to a "persistent" buffer, it will use the slower
version that writes the printk format into the buffer.
- Add command line option to allow trace_printk() to go to an instance
Allow the kernel command line to define which instance the trace_printk()
goes to, instead of forcing the admin to set it for every boot via the
tracefs options.
- Start a document that explains how to use tracefs to debug the kernel
- Add some more kernel selftests to test user mapped ring buffer
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Merge tag 'trace-ring-buffer-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull ring-buffer updates from Steven Rostedt:
- tracing/ring-buffer: persistent buffer across reboots
This allows for the tracing instance ring buffer to stay persistent
across reboots. The way this is done is by adding to the kernel
command line:
trace_instance=boot_map@0x285400000:12M
This will reserve 12 megabytes at the address 0x285400000, and then
map the tracing instance "boot_map" ring buffer to that memory. This
will appear as a normal instance in the tracefs system:
/sys/kernel/tracing/instances/boot_map
A user could enable tracing in that instance, and on reboot or kernel
crash, if the memory is not wiped by the firmware, it will recreate
the trace in that instance. For example, if one was debugging a
shutdown of a kernel reboot:
# cd /sys/kernel/tracing
# echo function > instances/boot_map/current_tracer
# reboot
[..]
# cd /sys/kernel/tracing
# tail instances/boot_map/trace
swapper/0-1 [000] d..1. 164.549800: restore_boot_irq_mode <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549801: native_restore_boot_irq_mode <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549802: disconnect_bsp_APIC <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549811: hpet_disable <-native_machine_shutdown
swapper/0-1 [000] d..1. 164.549812: iommu_shutdown_noop <-native_machine_restart
swapper/0-1 [000] d..1. 164.549813: native_machine_emergency_restart <-__do_sys_reboot
swapper/0-1 [000] d..1. 164.549813: tboot_shutdown <-native_machine_emergency_restart
swapper/0-1 [000] d..1. 164.549820: acpi_reboot <-native_machine_emergency_restart
swapper/0-1 [000] d..1. 164.549821: acpi_reset <-acpi_reboot
swapper/0-1 [000] d..1. 164.549822: acpi_os_write_port <-acpi_reboot
On reboot, the buffer is examined to make sure it is valid. The
validation check even steps through every event to make sure the meta
data of the event is correct. If any test fails, it will simply reset
the buffer, and the buffer will be empty on boot.
- Allow the tracing persistent boot buffer to use the "reserve_mem"
option
Instead of having the admin find a physical address to store the
persistent buffer, which can be very tedious if they have to
administrate several different machines, allow them to use the
"reserve_mem" option that will find a location for them. It is not as
reliable because of KASLR, as the loading of the kernel in different
locations can cause the memory allocated to be inconsistent. Booting
with "nokaslr" can make reserve_mem more reliable.
- Have function graph tracer handle offsets from a previous boot.
The ring buffer output from a previous boot may have different
addresses due to kaslr. Have the function graph tracer handle these
by using the delta from the previous boot to the new boot address
space.
- Only reset the saved meta offset when the buffer is started or reset
In the persistent memory meta data, it holds the previous address
space information, so that it can calculate the delta to have
function tracing work. But this gets updated after being read to hold
the new address space. But if the buffer isn't used for that boot, on
reboot, the delta is now calculated from the previous boot and not
the boot that holds the data in the ring buffer. This causes the
functions not to be shown. Do not save the address space information
of the current kernel until it is being recorded.
- Add a magic variable to test the valid meta data
Add a magic variable in the meta data that can also be used for
validation. The validator of the previous buffer doesn't need this
magic data, but it can be used if the meta data is changed by a new
kernel, which may have the same format that passes the validator but
is used differently. This magic number can also be used as a
"versioning" of the meta data.
- Align user space mapped ring buffer sub buffers to improve TLB
entries
Linus mentioned that the mapped ring buffer sub buffers were
misaligned between the meta page and the sub-buffers, so that if the
sub-buffers were bigger than PAGE_SIZE, it wouldn't allow the TLB to
use bigger entries.
- Add new kernel command line "traceoff" to disable tracing on boot for
instances
If tracing is enabled for a boot instance, there needs a way to be
able to disable it on boot so that new events do not get entered into
the ring buffer and be mixed with events from a previous boot, as
that can be confusing.
- Allow trace_printk() to go to other instances
Currently, trace_printk() can only go to the top level instance. When
debugging with a persistent buffer, it is really useful to be able to
add trace_printk() to go to that buffer, so that you have access to
them after a crash.
- Do not use "bin_printk()" for traces to a boot instance
The bin_printk() saves only a pointer to the printk format in the
ring buffer, as the reader of the buffer can still have access to it.
But this is not the case if the buffer is from a previous boot. If
the trace_printk() is going to a "persistent" buffer, it will use the
slower version that writes the printk format into the buffer.
- Add command line option to allow trace_printk() to go to an instance
Allow the kernel command line to define which instance the
trace_printk() goes to, instead of forcing the admin to set it for
every boot via the tracefs options.
- Start a document that explains how to use tracefs to debug the kernel
- Add some more kernel selftests to test user mapped ring buffer
* tag 'trace-ring-buffer-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (28 commits)
selftests/ring-buffer: Handle meta-page bigger than the system
selftests/ring-buffer: Verify the entire meta-page padding
tracing/Documentation: Start a document on how to debug with tracing
tracing: Add option to set an instance to be the trace_printk destination
tracing: Have trace_printk not use binary prints if boot buffer
tracing: Allow trace_printk() to go to other instance buffers
tracing: Add "traceoff" flag to boot time tracing instances
ring-buffer: Align meta-page to sub-buffers for improved TLB usage
ring-buffer: Add magic and struct size to boot up meta data
ring-buffer: Don't reset persistent ring-buffer meta saved addresses
tracing/fgraph: Have fgraph handle previous boot function addresses
tracing: Allow boot instances to use reserve_mem boot memory
tracing: Fix ifdef of snapshots to not prevent last_boot_info file
ring-buffer: Use vma_pages() helper function
tracing: Fix NULL vs IS_ERR() check in enable_instances()
tracing: Add last boot delta offset for stack traces
tracing: Update function tracing output for previous boot buffer
tracing: Handle old buffer mappings for event strings and functions
tracing/ring-buffer: Add last_boot_info file to boot instance
ring-buffer: Save text and data locations in mapped meta data
...
|
||
|
Linus Torvalds
|
7856a56541 |
Many singleton patches - please see the various changelogs for details.
Quite a lot of nilfs2 work this time around.
Notable patch series in this pull request are:
"mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64() to
provide (much) more accurate results. The current implementation was
causing Uwe some issues in the PWM drivers.
"xz: Updates to license, filters, and compression options" from Lasse
Collin. Miscellaneous maintenance and kinor feature work to the xz
decompressor.
"Fix some GDB command error and add some GDB commands" from Kuan-Ying Lee.
Fixes and enhancements to the gdb scripts.
"treewide: add missing MODULE_DESCRIPTION() macros" from Jeff Johnson.
Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of warnings about this.
"nilfs2: add support for some common ioctls" from Ryusuke Konishi. Adds
various commonly-available ioctls to nilfs2.
"This series fixes a number of formatting issues in kernel doc comments"
from Ryusuke Konishi does that.
"nilfs2: prevent unexpected ENOENT propagation" from Ryusuke Konishi. Fix
issues where -ENOENT was being unintentionally and inappropriately
returned to userspace.
"nilfs2: assorted cleanups" from Huang Xiaojia.
"nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
Konishi fixes some issues which can occur on corrupted nilfs2 filesystems.
"scripts/decode_stacktrace.sh: improve error reporting and usability" from
Luca Ceresoli does those things.
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Merge tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
"Many singleton patches - please see the various changelogs for
details.
Quite a lot of nilfs2 work this time around.
Notable patch series in this pull request are:
- "mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with
assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64()
to provide (much) more accurate results. The current implementation
was causing Uwe some issues in the PWM drivers.
- "xz: Updates to license, filters, and compression options" from
Lasse Collin. Miscellaneous maintenance and kinor feature work to
the xz decompressor.
- "Fix some GDB command error and add some GDB commands" from
Kuan-Ying Lee. Fixes and enhancements to the gdb scripts.
- "treewide: add missing MODULE_DESCRIPTION() macros" from Jeff
Johnson. Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of
warnings about this.
- "nilfs2: add support for some common ioctls" from Ryusuke Konishi.
Adds various commonly-available ioctls to nilfs2.
- "This series fixes a number of formatting issues in kernel doc
comments" from Ryusuke Konishi does that.
- "nilfs2: prevent unexpected ENOENT propagation" from Ryusuke
Konishi. Fix issues where -ENOENT was being unintentionally and
inappropriately returned to userspace.
- "nilfs2: assorted cleanups" from Huang Xiaojia.
- "nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke
Konishi fixes some issues which can occur on corrupted nilfs2
filesystems.
- "scripts/decode_stacktrace.sh: improve error reporting and
usability" from Luca Ceresoli does those things"
* tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (103 commits)
list: test: increase coverage of list_test_list_replace*()
list: test: fix tests for list_cut_position()
proc: use __auto_type more
treewide: correct the typo 'retun'
ocfs2: cleanup return value and mlog in ocfs2_global_read_info()
nilfs2: remove duplicate 'unlikely()' usage
nilfs2: fix potential oob read in nilfs_btree_check_delete()
nilfs2: determine empty node blocks as corrupted
nilfs2: fix potential null-ptr-deref in nilfs_btree_insert()
user_namespace: use kmemdup_array() instead of kmemdup() for multiple allocation
tools/mm: rm thp_swap_allocator_test when make clean
squashfs: fix percpu address space issues in decompressor_multi_percpu.c
lib: glob.c: added null check for character class
nilfs2: refactor nilfs_segctor_thread()
nilfs2: use kthread_create and kthread_stop for the log writer thread
nilfs2: remove sc_timer_task
nilfs2: do not repair reserved inode bitmap in nilfs_new_inode()
nilfs2: eliminate the shared counter and spinlock for i_generation
nilfs2: separate inode type information from i_state field
nilfs2: use the BITS_PER_LONG macro
...
|
||
|
Linus Torvalds
|
617a814f14 |
ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
"Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
"Some cleanups for shmem" from Baolin Wang. No functional changes - mode
code reuse, better function naming, logic simplifications.
"mm: some small page fault cleanups" from Josef Bacik. No functional
changes - code cleanups only.
"Various memory tiering fixes" from Zi Yan. A small fix and a little
cleanup.
"mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
"Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt. This
is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at all
used 16k. Useful for some system tuning things, but partivularly useful
for "the dynamic kernel stack project".
"kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
Teaches kmemleak to detect leaksage of percpu memory.
"mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
"mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
Hildenbrand. Improves PTE/PMD splitlock detection, makes powerpc/8xx work
correctly by design rather than by accident.
"mm: remove arch_make_page_accessible()" from David Hildenbrand. Some
folio conversions which make arch_make_page_accessible() unneeded.
"mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
Cleans up and fixes our handling of the resetting of the cgroup/process
peak-memory-use detector.
"Make core VMA operations internal and testable" from Lorenzo Stoakes.
Rationalizaion and encapsulation of the VMA manipulation APIs. With a
view to better enable testing of the VMA functions, even from a
userspace-only harness.
"mm: zswap: fixes for global shrinker" from Takero Funaki. Fix issues in
the zswap global shrinker, resulting in improved performance.
"mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill in
some missing info in /proc/zoneinfo.
"mm: replace follow_page() by folio_walk" from David Hildenbrand. Code
cleanups and rationalizations (conversion to folio_walk()) resulting in
the removal of follow_page().
"improving dynamic zswap shrinker protection scheme" from Nhat Pham. Some
tuning to improve zswap's dynamic shrinker. Significant reductions in
swapin and improvements in performance are shown.
"mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
Improvements to the new unaccepted memory feature,
"mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on DAX
PUDs. This was missing, although nobody seems to have notied yet.
"Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
Cleanups and modest performance improvements for the maple tree library
code.
"memcg: further decouple v1 code from v2" from Shakeel Butt. Move more
cgroup v1 remnants away from the v2 memcg code.
"memcg: initiate deprecation of v1 features" from Shakeel Butt. Adds
various warnings telling users that memcg v1 features are deprecated.
"mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
Greatly improves the success rate of the mTHP swap allocation.
"mm: introduce numa_memblks" from Mike Rapoport. Moves various disparate
per-arch implementations of numa_memblk code into generic code.
"mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
"support large folio swap-out and swap-in for shmem" from Baolin Wang.
With this series we no longer split shmem large folios into simgle-page
folios when swapping out shmem.
"mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice performance
improvements and code reductions for gigantic folios.
"support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
"mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
"Increase the number of bits available in page_type" from Matthew Wilcox.
Increases the number of bits available in page_type!
"Simplify the page flags a little" from Matthew Wilcox. Many legacy page
flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
"mm: store zero pages to be swapped out in a bitmap" from Usama Arif. An
optimization which permits us to avoid writing/reading zero-filled zswap
pages to backing store.
"Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race window
which occurs when a MAP_FIXED operqtion is occurring during an unrelated
vma tree walk.
"mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of the
vma_merge() functionality, making ot cleaner, more testable and better
tested.
"misc fixups for DAMON {self,kunit} tests" from SeongJae Park. Minor
fixups of DAMON selftests and kunit tests.
"mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang. Code
cleanups and folio conversions.
"Shmem mTHP controls and stats improvements" from Ryan Roberts. Cleanups
for shmem controls and stats.
"mm: count the number of anonymous THPs per size" from Barry Song. Expose
additional anon THP stats to userspace for improved tuning.
"mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
conversions and removal of now-unused page-based APIs.
"replace per-quota region priorities histogram buffer with per-context
one" from SeongJae Park. DAMON histogram rationalization.
"Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
Park. DAMON documentation updates.
"mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
related doc and warn" from Jason Wang: fixes usage of page allocator
__GFP_NOFAIL and GFP_ATOMIC flags.
"mm: split underused THPs" from Yu Zhao. Improve THP=always policy - this
was overprovisioning THPs in sparsely accessed memory areas.
"zram: introduce custom comp backends API" frm Sergey Senozhatsky. Add
support for zram run-time compression algorithm tuning.
"mm: Care about shadow stack guard gap when getting an unmapped area" from
Mark Brown. Fix up the various arch_get_unmapped_area() implementations
to better respect guard areas.
"Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability of
mem_cgroup_iter() and various code cleanups.
"mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
"resource: Fix region_intersects() vs add_memory_driver_managed()" from
Huang Ying. Fix a bug in region_intersects() for systems with CXL memory.
"mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches a
couple more code paths to correctly recover from the encountering of
poisoned memry.
"mm: enable large folios swap-in support" from Barry Song. Support the
swapin of mTHP memory into appropriately-sized folios, rather than into
single-page folios.
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Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Along with the usual shower of singleton patches, notable patch series
in this pull request are:
- "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
consistency to the APIs and behaviour of these two core allocation
functions. This also simplifies/enables Rustification.
- "Some cleanups for shmem" from Baolin Wang. No functional changes -
mode code reuse, better function naming, logic simplifications.
- "mm: some small page fault cleanups" from Josef Bacik. No
functional changes - code cleanups only.
- "Various memory tiering fixes" from Zi Yan. A small fix and a
little cleanup.
- "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
simplifications and .text shrinkage.
- "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
Butt. This is a feature, it adds new feilds to /proc/vmstat such as
$ grep kstack /proc/vmstat
kstack_1k 3
kstack_2k 188
kstack_4k 11391
kstack_8k 243
kstack_16k 0
which tells us that 11391 processes used 4k of stack while none at
all used 16k. Useful for some system tuning things, but
partivularly useful for "the dynamic kernel stack project".
- "kmemleak: support for percpu memory leak detect" from Pavel
Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.
- "mm: memcg: page counters optimizations" from Roman Gushchin. "3
independent small optimizations of page counters".
- "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
David Hildenbrand. Improves PTE/PMD splitlock detection, makes
powerpc/8xx work correctly by design rather than by accident.
- "mm: remove arch_make_page_accessible()" from David Hildenbrand.
Some folio conversions which make arch_make_page_accessible()
unneeded.
- "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
Finkel. Cleans up and fixes our handling of the resetting of the
cgroup/process peak-memory-use detector.
- "Make core VMA operations internal and testable" from Lorenzo
Stoakes. Rationalizaion and encapsulation of the VMA manipulation
APIs. With a view to better enable testing of the VMA functions,
even from a userspace-only harness.
- "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
issues in the zswap global shrinker, resulting in improved
performance.
- "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
in some missing info in /proc/zoneinfo.
- "mm: replace follow_page() by folio_walk" from David Hildenbrand.
Code cleanups and rationalizations (conversion to folio_walk())
resulting in the removal of follow_page().
- "improving dynamic zswap shrinker protection scheme" from Nhat
Pham. Some tuning to improve zswap's dynamic shrinker. Significant
reductions in swapin and improvements in performance are shown.
- "mm: Fix several issues with unaccepted memory" from Kirill
Shutemov. Improvements to the new unaccepted memory feature,
- "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
DAX PUDs. This was missing, although nobody seems to have notied
yet.
- "Introduce a store type enum for the Maple tree" from Sidhartha
Kumar. Cleanups and modest performance improvements for the maple
tree library code.
- "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
more cgroup v1 remnants away from the v2 memcg code.
- "memcg: initiate deprecation of v1 features" from Shakeel Butt.
Adds various warnings telling users that memcg v1 features are
deprecated.
- "mm: swap: mTHP swap allocator base on swap cluster order" from
Chris Li. Greatly improves the success rate of the mTHP swap
allocation.
- "mm: introduce numa_memblks" from Mike Rapoport. Moves various
disparate per-arch implementations of numa_memblk code into generic
code.
- "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
improves the performance of munmap() of swap-filled ptes.
- "support large folio swap-out and swap-in for shmem" from Baolin
Wang. With this series we no longer split shmem large folios into
simgle-page folios when swapping out shmem.
- "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
performance improvements and code reductions for gigantic folios.
- "support shmem mTHP collapse" from Baolin Wang. Adds support for
khugepaged's collapsing of shmem mTHP folios.
- "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
performance regression due to the addition of mseal().
- "Increase the number of bits available in page_type" from Matthew
Wilcox. Increases the number of bits available in page_type!
- "Simplify the page flags a little" from Matthew Wilcox. Many legacy
page flags are now folio flags, so the page-based flags and their
accessors/mutators can be removed.
- "mm: store zero pages to be swapped out in a bitmap" from Usama
Arif. An optimization which permits us to avoid writing/reading
zero-filled zswap pages to backing store.
- "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
window which occurs when a MAP_FIXED operqtion is occurring during
an unrelated vma tree walk.
- "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
the vma_merge() functionality, making ot cleaner, more testable and
better tested.
- "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
Minor fixups of DAMON selftests and kunit tests.
- "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
Code cleanups and folio conversions.
- "Shmem mTHP controls and stats improvements" from Ryan Roberts.
Cleanups for shmem controls and stats.
- "mm: count the number of anonymous THPs per size" from Barry Song.
Expose additional anon THP stats to userspace for improved tuning.
- "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
folio conversions and removal of now-unused page-based APIs.
- "replace per-quota region priorities histogram buffer with
per-context one" from SeongJae Park. DAMON histogram
rationalization.
- "Docs/damon: update GitHub repo URLs and maintainer-profile" from
SeongJae Park. DAMON documentation updates.
- "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
improve related doc and warn" from Jason Wang: fixes usage of page
allocator __GFP_NOFAIL and GFP_ATOMIC flags.
- "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
This was overprovisioning THPs in sparsely accessed memory areas.
- "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
Add support for zram run-time compression algorithm tuning.
- "mm: Care about shadow stack guard gap when getting an unmapped
area" from Mark Brown. Fix up the various arch_get_unmapped_area()
implementations to better respect guard areas.
- "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
of mem_cgroup_iter() and various code cleanups.
- "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
pfnmap support.
- "resource: Fix region_intersects() vs add_memory_driver_managed()"
from Huang Ying. Fix a bug in region_intersects() for systems with
CXL memory.
- "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
a couple more code paths to correctly recover from the encountering
of poisoned memry.
- "mm: enable large folios swap-in support" from Barry Song. Support
the swapin of mTHP memory into appropriately-sized folios, rather
than into single-page folios"
* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
zram: free secondary algorithms names
uprobes: turn xol_area->pages[2] into xol_area->page
uprobes: introduce the global struct vm_special_mapping xol_mapping
Revert "uprobes: use vm_special_mapping close() functionality"
mm: support large folios swap-in for sync io devices
mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
set_memory: add __must_check to generic stubs
mm/vma: return the exact errno in vms_gather_munmap_vmas()
memcg: cleanup with !CONFIG_MEMCG_V1
mm/show_mem.c: report alloc tags in human readable units
mm: support poison recovery from copy_present_page()
mm: support poison recovery from do_cow_fault()
resource, kunit: add test case for region_intersects()
resource: make alloc_free_mem_region() works for iomem_resource
mm: z3fold: deprecate CONFIG_Z3FOLD
vfio/pci: implement huge_fault support
mm/arm64: support large pfn mappings
mm/x86: support large pfn mappings
...
|
||
|
Linus Torvalds
|
056f8c437d |
Lots of cleanups and bug fixes this cycle, primarily in the block
allocation, extent management, fast commit, and journalling. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmbsGRcACgkQ8vlZVpUN gaP+pwgAop3LUpOFQ9dPRTR3+37AJI8adfabfLIDkEkoVA7lyYY/6Q8pcQ0rklq3 wE1WxrJ7MaE1GaFCwRIDIL6TP+uYRK0pPjqbFBxGakhDc+WXrTcALOWWofb7J7PL FLwP264lRRfKfpMHdK8bx6YHnEN8425PR+ZNXGVPsw+wjo72mmnq54w+ct1iOKiw dKfIrwwCGKlBsNdYHS/XsSx7MMK8e7nsKoSq0UtpJ4PqF11/asOtlYYODc4hd27U E3I3UDKuntmz+meAscDejOJqQk5FT184HIt/Y5JfetKU2zpUFj9IKqXDzMjijdaj vGn9RkTXfJdxMPm1ouF2R6KIRJollg== =V7+A -----END PGP SIGNATURE----- Merge tag 'ext4_for_linus-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 Pull ext4 updates from Ted Ts'o: "Lots of cleanups and bug fixes this cycle, primarily in the block allocation, extent management, fast commit, and journalling" * tag 'ext4_for_linus-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (93 commits) ext4: convert EXT4_B2C(sbi->s_stripe) users to EXT4_NUM_B2C ext4: check stripe size compatibility on remount as well ext4: fix i_data_sem unlock order in ext4_ind_migrate() ext4: remove the special buffer dirty handling in do_journal_get_write_access ext4: fix a potential assertion failure due to improperly dirtied buffer ext4: hoist ext4_block_write_begin and replace the __block_write_begin ext4: persist the new uptodate buffers in ext4_journalled_zero_new_buffers ext4: dax: keep orphan list before truncate overflow allocated blocks ext4: fix error message when rejecting the default hash ext4: save unnecessary indentation in ext4_ext_create_new_leaf() ext4: make some fast commit functions reuse extents path ext4: refactor ext4_swap_extents() to reuse extents path ext4: get rid of ppath in convert_initialized_extent() ext4: get rid of ppath in ext4_ext_handle_unwritten_extents() ext4: get rid of ppath in ext4_ext_convert_to_initialized() ext4: get rid of ppath in ext4_convert_unwritten_extents_endio() ext4: get rid of ppath in ext4_split_convert_extents() ext4: get rid of ppath in ext4_split_extent() ext4: get rid of ppath in ext4_force_split_extent_at() ext4: get rid of ppath in ext4_split_extent_at() ... |
||
|
Linus Torvalds
|
84bbfe6b64 |
platform-drivers-x86 for v6.12-1
Highlights: - asus-wmi: Add support for vivobook fan profiles - dell-laptop: Add knobs to change battery charge settings - lg-laptop: Add operation region support - intel-uncore-freq: Add support for efficiency latency control - intel/ifs: Add SBAF test support - intel/pmc: Ignore all LTRs during suspend - platform/surface: Support for arm64 based Surface devices - wmi: Pass event data directly to legacy notify handlers - x86/platform/geode: switch GPIO buttons and LEDs to software properties - bunch of small cleanups, fixes, hw-id additions, etc. The following is an automated git shortlog grouped by driver: Documentation: - admin-guide: pm: Add efficiency vs. latency tradeoff to uncore documentation ISST: - Simplify isst_misc_reg() and isst_misc_unreg() MAINTAINERS: - adjust file entry in INTEL MID PLATFORM - Add Intel MID section Merge tag 'hwmon-for-v6.11-rc7' into review-hans: - Merge tag 'hwmon-for-v6.11-rc7' into review-hans Merge tag 'platform-drivers-x86-v6.11-3' into review-hans: - Merge tag 'platform-drivers-x86-v6.11-3' into review-hans acer-wmi: - Use backlight power constants asus-laptop: - Use backlight power constants asus-nb-wmi: - Use backlight power constants asus-wmi: - don't fail if platform_profile already registered - add debug print in more key places - Use backlight power constants - add support for vivobook fan profiles dell-laptop: - remove duplicate code w/ battery function - Add knobs to change battery charge settings dt-bindings: - platform: Add Surface System Aggregator Module - serial: Allow embedded-controller as child node eeepc-laptop: - Use backlight power constants eeepc-wmi: - Use backlight power constants fujitsu-laptop: - Use backlight power constants hid-asus: - use hid for brightness control on keyboard ideapad-laptop: - Make the scope_guard() clear of its scope - move ACPI helpers from header to source file - Use backlight power constants int3472: - Use str_high_low() - Use GPIO_LOOKUP() macro - make common part a separate module intel-hid: - Use string_choices API instead of ternary operator intel/pmc: - Ignore all LTRs during suspend - Remove unused param idx from pmc_for_each_mode() intel_scu_ipc: - Move intel_scu_ipc.h out of arch/x86/include/asm intel_scu_wdt: - Move intel_scu_wdt.h to x86 subfolder lenovo-ymc: - Ignore the 0x0 state lg-laptop: - Add operation region support oaktrail: - Use backlight power constants panasonic-laptop: - Add support for programmable buttons platform/mellanox: - mlxbf-pmc: fix lockdep warning platform/olpc: - Remove redundant null pointer checks in olpc_ec_setup_debugfs() platform/surface: - Add OF support platform/x86/amd: - pmf: Add quirk for TUF Gaming A14 platform/x86/amd/pmf: - Update SMU metrics table for 1AH family series - Relocate CPU ID macros to the PMF header - Add support for notifying Smart PC Solution updates platform/x86/intel-uncore-freq: - Add efficiency latency control to sysfs interface - Add support for efficiency latency control - Do not present separate package-die domain platform/x86/intel/ifs: - Fix SBAF title underline length - Add SBAF test support - Add SBAF test image loading support - Refactor MSR usage in IFS test code platform/x86/intel/pmc: - Show live substate requirements platform/x86/intel/pmt: - Use PMT callbacks platform/x86/intel/vsec: - Add PMT read callbacks platform/x86/intel/vsec.h: - Move to include/linux samsung-laptop: - Use backlight power constants serial-multi-instantiate: - Don't require both I2C and SPI thinkpad_acpi: - Fix uninitialized symbol 's' warning - Add Thinkpad Edge E531 fan support touchscreen_dmi: - add nanote-next quirk trace: - platform/x86/intel/ifs: Add SBAF trace support wmi: - Call both legacy and WMI driver notify handlers - Merge get_event_data() with wmi_get_notify_data() - Remove wmi_get_event_data() - Pass event data directly to legacy notify handlers x86-android-tablets: - Adjust Xiaomi Pad 2 bottom bezel touch buttons LED - Fix spelling in the comments x86/platform/geode: - switch GPIO buttons and LEDs to software properties -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEEuvA7XScYQRpenhd+kuxHeUQDJ9wFAmbq2tYUHGhkZWdvZWRl QHJlZGhhdC5jb20ACgkQkuxHeUQDJ9xKYAgAoXZt1MjBDA1mP813i4bj8CYQHWO+ YnugVhEccucxgC6sBGzQeRLBNuG/VaBN6tyJ1pKYMpWV5gSthq1Iop+DZbno2ciM QAnSSzioHB/dhYBXuKmZatkMsKLjLjtfcexUed9DfwKapqFl3XQMb6cEYasM37hH 197K4yAFF3oqQImlACwQDxN1q3eCG6bdIbEAByZW7yH644IC5zH8/CiFjTCwUx/F aFIHQlLLzt1kjhD8AbRHhRcsGbzG2ejHsC3yrQddEJSOkInDO8baR0aDyhBTUFPE lztuekFfaJ1Xcyoc/Zf4pi3ab1Djt+Htck3CHLO/xcl0YYMlM5vcs1QlhQ== =sAk7 -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform drivers updates from Hans de Goede: - asus-wmi: Add support for vivobook fan profiles - dell-laptop: Add knobs to change battery charge settings - lg-laptop: Add operation region support - intel-uncore-freq: Add support for efficiency latency control - intel/ifs: Add SBAF test support - intel/pmc: Ignore all LTRs during suspend - platform/surface: Support for arm64 based Surface devices - wmi: Pass event data directly to legacy notify handlers - x86/platform/geode: switch GPIO buttons and LEDs to software properties - bunch of small cleanups, fixes, hw-id additions, etc. * tag 'platform-drivers-x86-v6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (65 commits) MAINTAINERS: adjust file entry in INTEL MID PLATFORM platform/x86: x86-android-tablets: Adjust Xiaomi Pad 2 bottom bezel touch buttons LED platform/mellanox: mlxbf-pmc: fix lockdep warning platform/x86/amd: pmf: Add quirk for TUF Gaming A14 platform/x86: touchscreen_dmi: add nanote-next quirk platform/x86: asus-wmi: don't fail if platform_profile already registered platform/x86: asus-wmi: add debug print in more key places platform/x86: intel_scu_wdt: Move intel_scu_wdt.h to x86 subfolder platform/x86: intel_scu_ipc: Move intel_scu_ipc.h out of arch/x86/include/asm MAINTAINERS: Add Intel MID section platform/x86: panasonic-laptop: Add support for programmable buttons platform/olpc: Remove redundant null pointer checks in olpc_ec_setup_debugfs() platform/x86: intel/pmc: Ignore all LTRs during suspend platform/x86: wmi: Call both legacy and WMI driver notify handlers platform/x86: wmi: Merge get_event_data() with wmi_get_notify_data() platform/x86: wmi: Remove wmi_get_event_data() platform/x86: wmi: Pass event data directly to legacy notify handlers platform/x86: thinkpad_acpi: Fix uninitialized symbol 's' warning platform/x86: x86-android-tablets: Fix spelling in the comments platform/x86: ideapad-laptop: Make the scope_guard() clear of its scope ... |
||
|
Linus Torvalds
|
eec91e22fe |
IOMMU Updates for Linux v6.12
Including:
- Core changes:
- Allow ATS on VF when parent device is identity mapped.
- Optimize unmap path on ARM io-pagetable implementation.
- Use of_property_present().
- ARM-SMMU changes:
- SMMUv2:
- Devicetree binding updates for Qualcomm MMU-500 implementations.
- Extend workarounds for broken Qualcomm hypervisor to avoid
touching features that are not available (e.g. 16KiB page
support, reserved context banks).
- SMMUv3:
- Support for NVIDIA's custom virtual command queue hardware.
- Fix Stage-2 stall configuration and extend tests to cover this
area.
- A bunch of driver cleanups, including simplification of the
master rbtree code.
- Plus minor cleanups and fixes across both drivers.
- Intel VT-d changes:
- Retire si_domain and convert to use static identity domain.
- Batched IOTLB/dev-IOTLB invalidation.
- Small code refactoring and cleanups.
- AMD-Vi changes:
- Cleanup and refactoring of io-pagetable code.
- Add parameter to limit the used io-pagesizes.
- Other cleanups and fixes.
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Merge tag 'iommu-updates-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
"Core changes:
- Allow ATS on VF when parent device is identity mapped
- Optimize unmap path on ARM io-pagetable implementation
- Use of_property_present()
ARM-SMMU changes:
- SMMUv2:
- Devicetree binding updates for Qualcomm MMU-500 implementations
- Extend workarounds for broken Qualcomm hypervisor to avoid
touching features that are not available (e.g. 16KiB page
support, reserved context banks)
- SMMUv3:
- Support for NVIDIA's custom virtual command queue hardware
- Fix Stage-2 stall configuration and extend tests to cover this
area
- A bunch of driver cleanups, including simplification of the
master rbtree code
- Minor cleanups and fixes across both drivers
Intel VT-d changes:
- Retire si_domain and convert to use static identity domain
- Batched IOTLB/dev-IOTLB invalidation
- Small code refactoring and cleanups
AMD-Vi changes:
- Cleanup and refactoring of io-pagetable code
- Add parameter to limit the used io-pagesizes
- Other cleanups and fixes"
* tag 'iommu-updates-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (77 commits)
dt-bindings: arm-smmu: Add compatible for QCS8300 SoC
iommu/amd: Test for PAGING domains before freeing a domain
iommu/amd: Fix argument order in amd_iommu_dev_flush_pasid_all()
iommu/amd: Add kernel parameters to limit V1 page-sizes
iommu/arm-smmu-v3: Reorganize struct arm_smmu_ctx_desc_cfg
iommu/arm-smmu-v3: Add types for each level of the CD table
iommu/arm-smmu-v3: Shrink the cdtab l1_desc array
iommu/arm-smmu-v3: Do not use devm for the cd table allocations
iommu/arm-smmu-v3: Remove strtab_base/cfg
iommu/arm-smmu-v3: Reorganize struct arm_smmu_strtab_cfg
iommu/arm-smmu-v3: Add types for each level of the 2 level stream table
iommu/arm-smmu-v3: Add arm_smmu_strtab_l1/2_idx()
iommu/arm-smmu-qcom: apply num_context_bank fixes for SDM630 / SDM660
iommu/arm-smmu-v3: Use the new rb tree helpers
dt-bindings: arm-smmu: document the support on SA8255p
iommu/tegra241-cmdqv: Do not allocate vcmdq until dma_set_mask_and_coherent
iommu/tegra241-cmdqv: Drop static at local variable
iommu/tegra241-cmdqv: Fix ioremap() error handling in probe()
iommu/amd: Do not set the D bit on AMD v2 table entries
iommu/amd: Correct the reported page sizes from the V1 table
...
|
||
|
Linus Torvalds
|
7c9026b2b0 |
pstore updates for v6.12-rc1
- ramoops: Fix .rst typo (Steven Rostedt) - pstore: replace spinlock_t by raw_spinlock_t (Wen Yang) -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRSPkdeREjth1dHnSE2KwveOeQkuwUCZufrKwAKCRA2KwveOeQk u0PQAQDtABDUAMyV9kgAG3nU9L0En+p8s+rF+9MJLDmFEnmjkQD8C7ky6cW74/3R b56tAsSsuFMuHdx4AGGD7rAWrnVUswc= =HNdN -----END PGP SIGNATURE----- Merge tag 'pstore-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull pstore updates from Kees Cook: - ramoops: Fix .rst typo (Steven Rostedt) - pstore: replace spinlock_t by raw_spinlock_t (Wen Yang) * tag 'pstore-v6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: pstore: replace spinlock_t by raw_spinlock_t pstore/ramoops: Fix typo as there is no "reserver" |
||
|
Linus Torvalds
|
067610ebaa |
RCU pull request for v6.12
This pull request contains the following branches:
context_tracking.15.08.24a: Rename context tracking state related
symbols and remove references to "dynticks" in various context
tracking state variables and related helpers; force
context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section.
csd.lock.15.08.24a: Enhance CSD-lock diagnostic reports; add an API
to provide an indication of ongoing CSD-lock stall.
nocb.09.09.24a: Update and simplify RCU nocb code to handle
(de-)offloading of callbacks only for offline CPUs; fix RT
throttling hrtimer being armed from offline CPU.
rcutorture.14.08.24a: Remove redundant rcu_torture_ops get_gp_completed
fields; add SRCU ->same_gp_state and ->get_comp_state
functions; add generic test for NUM_ACTIVE_*RCU_POLL* for
testing RCU and SRCU polled grace periods; add CFcommon.arch
for arch-specific Kconfig options; print number of update types
in rcu_torture_write_types();
add rcutree.nohz_full_patience_delay testing to the TREE07
scenario; add a stall_cpu_repeat module parameter to test
repeated CPU stalls; add argument to limit number of CPUs a
guest OS can use in torture.sh;
rcustall.09.09.24a: Abbreviate RCU CPU stall warnings during CSD-lock
stalls; Allow dump_cpu_task() to be called without disabling
preemption; defer printing stall-warning backtrace when holding
rcu_node lock.
srcu.12.08.24a: Make SRCU gp seq wrap-around faster; add KCSAN checks
for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays; mark idle SRCU-barrier
callbacks to help identify stuck SRCU-barrier callback.
rcu.tasks.14.08.24a: Remove RCU Tasks Rude asynchronous APIs as they
are no longer used; stop testing RCU Tasks Rude asynchronous
APIs; fix access to non-existent percpu regions; check
processor-ID assumptions during chosen CPU calculation for
callback enqueuing; update description of rtp->tasks_gp_seq
grace-period sequence number; add rcu_barrier_cb_is_done()
to identify whether a given rcu_barrier callback is stuck;
mark idle Tasks-RCU-barrier callbacks; add
*torture_stats_print() functions to print detailed
diagnostics for Tasks-RCU variants; capture start time of
rcu_barrier_tasks*() operation to help distinguish a hung
barrier operation from a long series of barrier operations.
rcu_scaling_tests.15.08.24a:
refscale: Add a TINY scenario to support tests of Tiny RCU
and Tiny SRCU; Optimize process_durations() operation;
rcuscale: Dump stacks of stalled rcu_scale_writer() instances;
dump grace-period statistics when rcu_scale_writer() stalls;
mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks; print detailed grace-period and barrier diagnostics
on rcu_scale_writer() hangs for Tasks-RCU variants; warn if
async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude;
make all writer tasks report upon hang; tolerate repeated
GFP_KERNEL failure in rcu_scale_writer(); use special allocator
for rcu_scale_writer(); NULL out top-level pointers to heap
memory to avoid double-free bugs on modprobe failures; maintain
per-task instead of per-CPU callbacks count to avoid any issues
with migration of either tasks or callbacks; constify struct
ref_scale_ops.
fixes.12.08.24a: Use system_unbound_wq for kfree_rcu work to avoid
disturbing isolated CPUs.
misc.11.08.24a: Warn on unexpected rcu_state.srs_done_tail state;
Better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines; annotate struct
kvfree_rcu_bulk_data with __counted_by().
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Merge tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux
Pull RCU updates from Neeraj Upadhyay:
"Context tracking:
- rename context tracking state related symbols and remove references
to "dynticks" in various context tracking state variables and
related helpers
- force context_tracking_enabled_this_cpu() to be inlined to avoid
leaving a noinstr section
CSD lock:
- enhance CSD-lock diagnostic reports
- add an API to provide an indication of ongoing CSD-lock stall
nocb:
- update and simplify RCU nocb code to handle (de-)offloading of
callbacks only for offline CPUs
- fix RT throttling hrtimer being armed from offline CPU
rcutorture:
- remove redundant rcu_torture_ops get_gp_completed fields
- add SRCU ->same_gp_state and ->get_comp_state functions
- add generic test for NUM_ACTIVE_*RCU_POLL* for testing RCU and SRCU
polled grace periods
- add CFcommon.arch for arch-specific Kconfig options
- print number of update types in rcu_torture_write_types()
- add rcutree.nohz_full_patience_delay testing to the TREE07 scenario
- add a stall_cpu_repeat module parameter to test repeated CPU stalls
- add argument to limit number of CPUs a guest OS can use in
torture.sh
rcustall:
- abbreviate RCU CPU stall warnings during CSD-lock stalls
- Allow dump_cpu_task() to be called without disabling preemption
- defer printing stall-warning backtrace when holding rcu_node lock
srcu:
- make SRCU gp seq wrap-around faster
- add KCSAN checks for concurrent updates to ->srcu_n_exp_nodelay and
->reschedule_count which are used in heuristics governing
auto-expediting of normal SRCU grace periods and
grace-period-state-machine delays
- mark idle SRCU-barrier callbacks to help identify stuck
SRCU-barrier callback
rcu tasks:
- remove RCU Tasks Rude asynchronous APIs as they are no longer used
- stop testing RCU Tasks Rude asynchronous APIs
- fix access to non-existent percpu regions
- check processor-ID assumptions during chosen CPU calculation for
callback enqueuing
- update description of rtp->tasks_gp_seq grace-period sequence
number
- add rcu_barrier_cb_is_done() to identify whether a given
rcu_barrier callback is stuck
- mark idle Tasks-RCU-barrier callbacks
- add *torture_stats_print() functions to print detailed diagnostics
for Tasks-RCU variants
- capture start time of rcu_barrier_tasks*() operation to help
distinguish a hung barrier operation from a long series of barrier
operations
refscale:
- add a TINY scenario to support tests of Tiny RCU and Tiny
SRCU
- optimize process_durations() operation
rcuscale:
- dump stacks of stalled rcu_scale_writer() instances and
grace-period statistics when rcu_scale_writer() stalls
- mark idle RCU-barrier callbacks to identify stuck RCU-barrier
callbacks
- print detailed grace-period and barrier diagnostics on
rcu_scale_writer() hangs for Tasks-RCU variants
- warn if async module parameter is specified for RCU implementations
that do not have async primitives such as RCU Tasks Rude
- make all writer tasks report upon hang
- tolerate repeated GFP_KERNEL failure in rcu_scale_writer()
- use special allocator for rcu_scale_writer()
- NULL out top-level pointers to heap memory to avoid double-free
bugs on modprobe failures
- maintain per-task instead of per-CPU callbacks count to avoid any
issues with migration of either tasks or callbacks
- constify struct ref_scale_ops
Fixes:
- use system_unbound_wq for kfree_rcu work to avoid disturbing
isolated CPUs
Misc:
- warn on unexpected rcu_state.srs_done_tail state
- better define "atomic" for list_replace_rcu() and
hlist_replace_rcu() routines
- annotate struct kvfree_rcu_bulk_data with __counted_by()"
* tag 'rcu.release.v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/rcu/linux: (90 commits)
rcu: Defer printing stall-warning backtrace when holding rcu_node lock
rcu/nocb: Remove superfluous memory barrier after bypass enqueue
rcu/nocb: Conditionally wake up rcuo if not already waiting on GP
rcu/nocb: Fix RT throttling hrtimer armed from offline CPU
rcu/nocb: Simplify (de-)offloading state machine
context_tracking: Tag context_tracking_enabled_this_cpu() __always_inline
context_tracking, rcu: Rename rcu_dyntick trace event into rcu_watching
rcu: Update stray documentation references to rcu_dynticks_eqs_{enter, exit}()
rcu: Rename rcu_momentary_dyntick_idle() into rcu_momentary_eqs()
rcu: Rename rcu_implicit_dynticks_qs() into rcu_watching_snap_recheck()
rcu: Rename dyntick_save_progress_counter() into rcu_watching_snap_save()
rcu: Rename struct rcu_data .exp_dynticks_snap into .exp_watching_snap
rcu: Rename struct rcu_data .dynticks_snap into .watching_snap
rcu: Rename rcu_dynticks_zero_in_eqs() into rcu_watching_zero_in_eqs()
rcu: Rename rcu_dynticks_in_eqs_since() into rcu_watching_snap_stopped_since()
rcu: Rename rcu_dynticks_in_eqs() into rcu_watching_snap_in_eqs()
rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_online()
context_tracking, rcu: Rename rcu_dynticks_curr_cpu_in_eqs() into rcu_is_watching_curr_cpu()
context_tracking, rcu: Rename rcu_dynticks_task*() into rcu_task*()
refscale: Constify struct ref_scale_ops
...
|
||
|
Linus Torvalds
|
85a77db95a |
workqueue: Changes for v6.12
Nothing major: - workqueue.panic_on_stall boot param added. - alloc_workqueue_lockdep_map() added (used by DRM). - Other cleanusp and doc updates. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZuN3gQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGR1hAP0XObdExeNsVWe1JUUUX061+H+aA6aVffb9+J/t b32u3QEAsn+oNWzuvzlGlSQKQMpPk+dT2na0Q0yZNxkNEzUiEQQ= =TeDS -----END PGP SIGNATURE----- Merge tag 'wq-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue updates from Tejun Heo: "Nothing major: - workqueue.panic_on_stall boot param added - alloc_workqueue_lockdep_map() added (used by DRM) - Other cleanusp and doc updates" * tag 'wq-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: kernel/workqueue.c: fix DEFINE_PER_CPU_SHARED_ALIGNED expansion workqueue: Fix another htmldocs build warning workqueue: fix null-ptr-deref on __alloc_workqueue() error workqueue: Don't call va_start / va_end twice workqueue: Fix htmldocs build warning workqueue: Add interface for user-defined workqueue lockdep map workqueue: Change workqueue lockdep map to pointer workqueue: Split alloc_workqueue into internal function and lockdep init Documentation: kernel-parameters: add workqueue.panic_on_stall workqueue: add cmdline parameter workqueue.panic_on_stall |
||
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Linus Torvalds
|
78567e2bc7 |
cgroup: Changes for v6.12
- cpuset isolation improvements. - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg. - Handling of unavailable v1 controller handling improved during cgroup1 mount operations. - union_find applied to cpuset. It makes code simpler and more efficient. - Reduce spurious events in pids.events. - Cleanups and other misc changes. - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZuNU3Q4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGdMsAP9yqPxu//LiJ3lPWhKcVVKtdwrA3AYDLE81VSJO 5VZJhAD+Ic+Ly/jZjDtjjQpZ1U3JsBpBRcVBqzeH0gD7eXaJgwk= =h/+c -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cpuset isolation improvements - cpuset cgroup1 support is split into its own file behind the new config option CONFIG_CPUSET_V1. This makes it the second controller which makes cgroup1 support optional after memcg - Handling of unavailable v1 controller handling improved during cgroup1 mount operations - union_find applied to cpuset. It makes code simpler and more efficient - Reduce spurious events in pids.events - Cleanups and other misc changes - Contains a merge of cgroup/for-6.11-fixes to receive cpuset fixes that further changes build upon * tag 'cgroup-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (34 commits) cgroup: Do not report unavailable v1 controllers in /proc/cgroups cgroup: Disallow mounting v1 hierarchies without controller implementation cgroup/cpuset: Expose cpuset filesystem with cpuset v1 only cgroup/cpuset: Move cpu.h include to cpuset-internal.h cgroup/cpuset: add sefltest for cpuset v1 cgroup/cpuset: guard cpuset-v1 code under CONFIG_CPUSETS_V1 cgroup/cpuset: rename functions shared between v1 and v2 cgroup/cpuset: move v1 interfaces to cpuset-v1.c cgroup/cpuset: move validate_change_legacy to cpuset-v1.c cgroup/cpuset: move legacy hotplug update to cpuset-v1.c cgroup/cpuset: add callback_lock helper cgroup/cpuset: move memory_spread to cpuset-v1.c cgroup/cpuset: move relax_domain_level to cpuset-v1.c cgroup/cpuset: move memory_pressure to cpuset-v1.c cgroup/cpuset: move common code to cpuset-internal.h cgroup/cpuset: introduce cpuset-v1.c selftest/cgroup: Make test_cpuset_prs.sh deal with pre-isolated CPUs cgroup/cpuset: Account for boot time isolated CPUs cgroup/cpuset: remove use_parent_ecpus of cpuset cgroup/cpuset: remove fetch_xcpus ... |
||
|
Paolo Bonzini
|
c09dd2bb57 |
Merge branch 'kvm-redo-enable-virt' into HEAD
Register KVM's cpuhp and syscore callbacks when enabling virtualization in hardware, as the sole purpose of said callbacks is to disable and re-enable virtualization as needed. The primary motivation for this series is to simplify dealing with enabling virtualization for Intel's TDX, which needs to enable virtualization when kvm-intel.ko is loaded, i.e. long before the first VM is created. That said, this is a nice cleanup on its own. By registering the callbacks on-demand, the callbacks themselves don't need to check kvm_usage_count, because their very existence implies a non-zero count. Patch 1 (re)adds a dedicated lock for kvm_usage_count. This avoids a lock ordering issue between cpus_read_lock() and kvm_lock. The lock ordering issue still exist in very rare cases, and will be fixed for good by switching vm_list to an (S)RCU-protected list. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
||
|
Linus Torvalds
|
d58db3f3a0 |
Another relatively mundane cycle for docs:
- The beginning of an EEVDF scheduler document - More Chinese translations - A rethrashing of our bisection documentation ...plus the usual array of smaller fixes, and more than the usual number of typo fixes. -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmboMnkACgkQF0NaE2wM flha/Qf/e8zRinIYQJ7BmombNm39w3wUiNuXr8SWq7afqhsAJJzmOZ3oyyfssL+B a1pSjhxb15UrKf1kMKhdBxhDndXvto5UekJRBY5gsTvcBMBmtIovN+ZK5Z5jObsw gzHD9of08Ti7N4C2dSBdLPHtvIBX0rVeEK4oAH7AUaQviu1cfTaLQQA0dRYsaJeX iXsts2NkGl6ZUF7mk4nlzj8+Y1zot+mCd6B53iSimNKxwsPODrCZUobJAvxg1qVU pRCQcnpx2fTBnh4ugrcLZbautyhL9bJ8VQzFeoQgYpODDgDnZyTjN6kxv65LpxAz dXi+hx5Vk7lP3BbTp9EeGn305/qQPA== =JuBw -----END PGP SIGNATURE----- Merge tag 'docs-6.12' of git://git.lwn.net/linux Pull documentation update from Jonathan Corbet: "Another relatively mundane cycle for docs: - The beginning of an EEVDF scheduler document - More Chinese translations - A rethrashing of our bisection documentation ...plus the usual array of smaller fixes, and more than the usual number of typo fixes" * tag 'docs-6.12' of git://git.lwn.net/linux: (48 commits) Remove duplicate "and" in 'Linux NVMe docs. docs:filesystems: fix spelling and grammar mistakes docs:filesystem: fix mispelled words on autofs page docs:mm: fixed spelling and grammar mistakes on vmalloc kernel stack page Documentation: PCI: fix typo in pci.rst docs/zh_CN: add the translation of kbuild/gcc-plugins.rst docs/process: fix typos docs:mm: fix spelling mistakes in heterogeneous memory management page accel/qaic: Fix a typo docs/zh_CN: update the translation of security-bugs docs: block: Fix grammar and spelling mistakes in bfq-iosched.rst Documentation: Fix spelling mistakes Documentation/gpu: Fix typo in Documentation/gpu/komeda-kms.rst scripts: sphinx-pre-install: remove unnecessary double check for $cur_version Loongarch: KVM: Add KVM hypercalls documentation for LoongArch Documentation: Document the kernel flag bdev_allow_write_mounted docs: scheduler: completion: Update member of struct completion docs: kerneldoc-preamble.sty: Suppress extra spaces in CJK literal blocks docs: submitting-patches: Advertise b4 docs: update dev-tools/kcsan.rst url about KTSAN ... |
||
|
Linus Torvalds
|
9ea925c806 |
Updates for timers and timekeeping:
- Core:
- Overhaul of posix-timers in preparation of removing the
workaround for periodic timers which have signal delivery
ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep
time since the large rewrite to a non-cascading wheel, but the
extra jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack
for real time tasks and enforce it at the core level instead of
having inconsistent individual checks in various timer setup
functions.
- The usual set of updates and enhancements all over the place.
- Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers
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Merge tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"Core:
- Overhaul of posix-timers in preparation of removing the workaround
for periodic timers which have signal delivery ignored.
- Remove the historical extra jiffie in msleep()
msleep() adds an extra jiffie to the timeout value to ensure
minimal sleep time. The timer wheel ensures minimal sleep time
since the large rewrite to a non-cascading wheel, but the extra
jiffie in msleep() remained unnoticed. Remove it.
- Make the timer slack handling correct for realtime tasks.
The procfs interface is inconsistent and does neither reflect
reality nor conforms to the man page. Show the correct 0 slack for
real time tasks and enforce it at the core level instead of having
inconsistent individual checks in various timer setup functions.
- The usual set of updates and enhancements all over the place.
Drivers:
- Allow the ACPI PM timer to be turned off during suspend
- No new drivers
- The usual updates and enhancements in various drivers"
* tag 'timers-core-2024-09-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
ntp: Make sure RTC is synchronized when time goes backwards
treewide: Fix wrong singular form of jiffies in comments
cpu: Use already existing usleep_range()
timers: Rename next_expiry_recalc() to be unique
platform/x86:intel/pmc: Fix comment for the pmc_core_acpi_pm_timer_suspend_resume function
clocksource/drivers/jcore: Use request_percpu_irq()
clocksource/drivers/cadence-ttc: Add missing clk_disable_unprepare in ttc_setup_clockevent
clocksource/drivers/asm9260: Add missing clk_disable_unprepare in asm9260_timer_init
clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init()
clocksource/drivers/ingenic: Use devm_clk_get_enabled() helpers
platform/x86:intel/pmc: Enable the ACPI PM Timer to be turned off when suspended
clocksource: acpi_pm: Add external callback for suspend/resume
clocksource/drivers/arm_arch_timer: Using for_each_available_child_of_node_scoped()
dt-bindings: timer: rockchip: Add rk3576 compatible
timers: Annotate possible non critical data race of next_expiry
timers: Remove historical extra jiffie for timeout in msleep()
hrtimer: Use and report correct timerslack values for realtime tasks
hrtimer: Annotate hrtimer_cpu_base_.*_expiry() for sparse.
timers: Add sparse annotation for timer_sync_wait_running().
signal: Replace BUG_ON()s
...
|
||
|
Linus Torvalds
|
a430d95c5e |
lsm/stable-6.12 PR 20240911
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Those callbacks which haven't been converted were left as-is due to the general ugliness of the changes required to support the static call conversion; we can revisit those callbacks at a future date. - Add the Integrity Policy Enforcement (IPE) LSM This adds a new LSM, Integrity Policy Enforcement (IPE). There is plenty of documentation about IPE in this patches, so I'll refrain from going into too much detail here, but the basic motivation behind IPE is to provide a mechanism such that administrators can restrict execution to only those binaries which come from integrity protected storage, e.g. a dm-verity protected filesystem. You will notice that IPE requires additional LSM hooks in the initramfs, dm-verity, and fs-verity code, with the associated patches carrying ACK/review tags from the associated maintainers. We couldn't find an obvious maintainer for the initramfs code, but the IPE patchset has been widely posted over several years. Both Deven Bowers and Fan Wu have contributed to IPE's development over the past several years, with Fan Wu agreeing to serve as the IPE maintainer moving forward. Once IPE is accepted into your tree, I'll start working with Fan to ensure he has the necessary accounts, keys, etc. so that he can start submitting IPE pull requests to you directly during the next merge window. - Move the lifecycle management of the LSM blobs to the LSM framework Management of the LSM blobs (the LSM state buffers attached to various kernel structs, typically via a void pointer named "security" or similar) has been mixed, some blobs were allocated/managed by individual LSMs, others were managed by the LSM framework itself. Starting with this pull we move management of all the LSM blobs, minus the XFRM blob, into the framework itself, improving consistency across LSMs, and reducing the amount of duplicated code across LSMs. Due to some additional work required to migrate the XFRM blob, it has been left as a todo item for a later date; from a practical standpoint this omission should have little impact as only SELinux provides a XFRM LSM implementation. - Fix problems with the LSM's handling of F_SETOWN The LSM hook for the fcntl(F_SETOWN) operation had a couple of problems: it was racy with itself, and it was disconnected from the associated DAC related logic in such a way that the LSM state could be updated in cases where the DAC state would not. We fix both of these problems by moving the security_file_set_fowner() hook into the same section of code where the DAC attributes are updated. Not only does this resolve the DAC/LSM synchronization issue, but as that code block is protected by a lock, it also resolve the race condition. - Fix potential problems with the security_inode_free() LSM hook Due to use of RCU to protect inodes and the placement of the LSM hook associated with freeing the inode, there is a bit of a challenge when it comes to managing any LSM state associated with an inode. The VFS folks are not open to relocating the LSM hook so we have to get creative when it comes to releasing an inode's LSM state. Traditionally we have used a single LSM callback within the hook that is triggered when the inode is "marked for death", but not actually released due to RCU. Unfortunately, this causes problems for LSMs which want to take an action when the inode's associated LSM state is actually released; so we add an additional LSM callback, inode_free_security_rcu(), that is called when the inode's LSM state is released in the RCU free callback. - Refactor two LSM hooks to better fit the LSM return value patterns The vast majority of the LSM hooks follow the "return 0 on success, negative values on failure" pattern, however, there are a small handful that have unique return value behaviors which has caused confusion in the past and makes it difficult for the BPF verifier to properly vet BPF LSM programs. This includes patches to convert two of these"special" LSM hooks to the common 0/-ERRNO pattern. - Various cleanups and improvements A handful of patches to remove redundant code, better leverage the IS_ERR_OR_NULL() helper, add missing "static" markings, and do some minor style fixups. * tag 'lsm-pr-20240911' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: (40 commits) security: Update file_set_fowner documentation fs: Fix file_set_fowner LSM hook inconsistencies lsm: Use IS_ERR_OR_NULL() helper function lsm: remove LSM_COUNT and LSM_CONFIG_COUNT ipe: Remove duplicated include in ipe.c lsm: replace indirect LSM hook calls with static calls lsm: count the LSMs enabled at compile time kernel: Add helper macros for loop unrolling init/main.c: Initialize early LSMs after arch code, static keys and calls. MAINTAINERS: add IPE entry with Fan Wu as maintainer documentation: add IPE documentation ipe: kunit test for parser scripts: add boot policy generation program ipe: enable support for fs-verity as a trust provider fsverity: expose verified fsverity built-in signatures to LSMs lsm: add security_inode_setintegrity() hook ipe: add support for dm-verity as a trust provider dm-verity: expose root hash digest and signature data to LSMs block,lsm: add LSM blob and new LSM hooks for block devices ipe: add permissive toggle ... |
||
|
Linus Torvalds
|
e8fc317dfc |
vfs-6.12.procfs
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Merge tag 'vfs-6.12.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull procfs updates from Christian Brauner:
"This contains the following changes for procfs:
- Add config options and parameters to block forcing memory writes.
This adds a Kconfig option and boot param to allow removing the
FOLL_FORCE flag from /proc/<pid>/mem write calls as this can be
used in various attacks.
The traditional forcing behavior is kept as default because it can
break GDB and some other use cases.
This is the simpler version that you had requested.
- Restrict overmounting of ephemeral entities.
It is currently possible to mount on top of various ephemeral
entities in procfs. This specifically includes magic links. To
recap, magic links are links of the form /proc/<pid>/fd/<nr>. They
serve as references to a target file and during path lookup they
cause a jump to the target path. Such magic links disappear if the
corresponding file descriptor is closed.
Currently it is possible to overmount such magic links. This is
mostly interesting for an attacker that wants to somehow trick a
process into e.g., reopening something that it didn't intend to
reopen or to hide a malicious file descriptor.
But also it risks leaking mounts for long-running processes. When
overmounting a magic link like above, the mount will not be
detached when the file descriptor is closed. Only the target
mountpoint will disappear. Which has the consequence of making it
impossible to unmount that mount afterwards. So the mount will
stick around until the process exits and the /proc/<pid>/ directory
is cleaned up during proc_flush_pid() when the dentries are pruned
and invalidated.
That in turn means it's possible for a program to accidentally leak
mounts and it's also possible to make a task leak mounts without
it's knowledge if the attacker just keeps overmounting things under
/proc/<pid>/fd/<nr>.
Disallow overmounting of such ephemeral entities.
- Cleanup the readdir method naming in some procfs file operations.
- Replace kmalloc() and strcpy() with a simple kmemdup() call"
* tag 'vfs-6.12.procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
proc: fold kmalloc() + strcpy() into kmemdup()
proc: block mounting on top of /proc/<pid>/fdinfo/*
proc: block mounting on top of /proc/<pid>/fd/*
proc: block mounting on top of /proc/<pid>/map_files/*
proc: add proc_splice_unmountable()
proc: proc_readfdinfo() -> proc_fdinfo_iterate()
proc: proc_readfd() -> proc_fd_iterate()
proc: add config & param to block forcing mem writes
|
||
|
Linus Torvalds
|
02824a5fd1 |
Power management updates for 6.12-rc1
- Remove LATENCY_MULTIPLIER from cpufreq (Qais Yousef).
- Add support for Granite Rapids and Sierra Forest in OOB mode to the
intel_pstate cpufreq driver (Srinivas Pandruvada).
- Add basic support for CPU capacity scaling on x86 and make the
intel_pstate driver set asymmetric CPU capacity on hybrid systems
without SMT (Rafael Wysocki).
- Add missing MODULE_DESCRIPTION() macros to the powerpc cpufreq
driver (Jeff Johnson).
- Several OF related cleanups in cpufreq drivers (Rob Herring).
- Enable COMPILE_TEST for ARM drivers (Rob Herrring).
- Introduce quirks for syscon failures and use socinfo to get revision
for TI cpufreq driver (Dhruva Gole, Nishanth Menon).
- Minor cleanups in amd-pstate driver (Anastasia Belova, Dhananjay
Ugwekar).
- Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers
(Danila Tikhonov, Huacai Chen, and Liu Jing).
- Make amd-pstate validate return of any attempt to update EPP limits,
which fixes the masking hardware problems (Mario Limonciello).
- Move the calculation of the AMD boost numerator outside of amd-pstate,
correcting acpi-cpufreq on systems with preferred cores (Mario
Limonciello).
- Harden preferred core detection in amd-pstate to avoid potential
false positives (Mario Limonciello).
- Add extra unit test coverage for mode state machine (Mario
Limonciello).
- Fix an "Uninitialized variables" issue in amd-pstste (Qianqiang Liu).
- Add Granite Rapids Xeon support to intel_idle (Artem Bityutskiy).
- Disable promotion to C1E on Jasper Lake and Elkhart Lake in
intel_idle (Kai-Heng Feng).
- Use scoped device node handling to fix missing of_node_put() and
simplify walking OF children in the riscv-sbi cpuidle driver (Krzysztof
Kozlowski).
- Remove dead code from cpuidle_enter_state() (Dhruva Gole).
- Change an error pointer to NULL to fix error handling in the
intel_rapl power capping driver (Dan Carpenter).
- Fix off by one in get_rpi() in the intel_rapl power capping
driver (Dan Carpenter).
- Add support for ArrowLake-U to the intel_rapl power capping
driver (Sumeet Pawnikar).
- Fix the energy-pkg event for AMD CPUs in the intel_rapl power capping
driver (Dhananjay Ugwekar).
- Add support for AMD family 1Ah processors to the intel_rapl power
capping driver (Dhananjay Ugwekar).
- Remove unused stub for saveable_highmem_page() and remove deprecated
macros from power management documentation (Andy Shevchenko).
- Use ysfs_emit() and sysfs_emit_at() in "show" functions in the PM
sysfs interface (Xueqin Luo).
- Update the maintainers information for the operating-points-v2-ti-cpu DT
binding (Dhruva Gole).
- Drop unnecessary of_match_ptr() from ti-opp-supply (Rob Herring).
- Add missing MODULE_DESCRIPTION() macros to devfreq governors (Jeff
Johnson).
- Use devm_clk_get_enabled() in the exynos-bus devfreq driver (Anand
Moon).
- Use of_property_present() instead of of_get_property() in the imx-bus
devfreq driver (Rob Herring).
- Update directory handling and installation process in the pm-graph
Makefile and add .gitignore to ignore sleepgraph.py artifacts to
pm-graph (Amit Vadhavana, Yo-Jung Lin).
- Make cpupower display residency value in idle-info (Aboorva
Devarajan).
- Add missing powercap_set_enabled() stub function to cpupower (John
B. Wyatt IV).
- Add SWIG support to cpupower (John B. Wyatt IV).
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Merge tag 'pm-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"By the number of new lines of code, the most visible change here is
the addition of hybrid CPU capacity scaling support to the
intel_pstate driver. Next are the amd-pstate driver changes related to
the calculation of the AMD boost numerator and preferred core
detection.
As far as new hardware support is concerned, the intel_idle driver
will now handle Granite Rapids Xeon processors natively, the
intel_rapl power capping driver will recognize family 1Ah of AMD
processors and Intel ArrowLake-U chipos, and intel_pstate will handle
Granite Rapids and Sierra Forest chips in the out-of-band (OOB) mode.
Apart from the above, there is a usual collection of assorted fixes
and code cleanups in many places and there are tooling updates.
Specifics:
- Remove LATENCY_MULTIPLIER from cpufreq (Qais Yousef)
- Add support for Granite Rapids and Sierra Forest in OOB mode to the
intel_pstate cpufreq driver (Srinivas Pandruvada)
- Add basic support for CPU capacity scaling on x86 and make the
intel_pstate driver set asymmetric CPU capacity on hybrid systems
without SMT (Rafael Wysocki)
- Add missing MODULE_DESCRIPTION() macros to the powerpc cpufreq
driver (Jeff Johnson)
- Several OF related cleanups in cpufreq drivers (Rob Herring)
- Enable COMPILE_TEST for ARM drivers (Rob Herrring)
- Introduce quirks for syscon failures and use socinfo to get
revision for TI cpufreq driver (Dhruva Gole, Nishanth Menon)
- Minor cleanups in amd-pstate driver (Anastasia Belova, Dhananjay
Ugwekar)
- Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers
(Danila Tikhonov, Huacai Chen, and Liu Jing)
- Make amd-pstate validate return of any attempt to update EPP
limits, which fixes the masking hardware problems (Mario
Limonciello)
- Move the calculation of the AMD boost numerator outside of
amd-pstate, correcting acpi-cpufreq on systems with preferred cores
(Mario Limonciello)
- Harden preferred core detection in amd-pstate to avoid potential
false positives (Mario Limonciello)
- Add extra unit test coverage for mode state machine (Mario
Limonciello)
- Fix an "Uninitialized variables" issue in amd-pstste (Qianqiang
Liu)
- Add Granite Rapids Xeon support to intel_idle (Artem Bityutskiy)
- Disable promotion to C1E on Jasper Lake and Elkhart Lake in
intel_idle (Kai-Heng Feng)
- Use scoped device node handling to fix missing of_node_put() and
simplify walking OF children in the riscv-sbi cpuidle driver
(Krzysztof Kozlowski)
- Remove dead code from cpuidle_enter_state() (Dhruva Gole)
- Change an error pointer to NULL to fix error handling in the
intel_rapl power capping driver (Dan Carpenter)
- Fix off by one in get_rpi() in the intel_rapl power capping driver
(Dan Carpenter)
- Add support for ArrowLake-U to the intel_rapl power capping driver
(Sumeet Pawnikar)
- Fix the energy-pkg event for AMD CPUs in the intel_rapl power
capping driver (Dhananjay Ugwekar)
- Add support for AMD family 1Ah processors to the intel_rapl power
capping driver (Dhananjay Ugwekar)
- Remove unused stub for saveable_highmem_page() and remove
deprecated macros from power management documentation (Andy
Shevchenko)
- Use ysfs_emit() and sysfs_emit_at() in "show" functions in the PM
sysfs interface (Xueqin Luo)
- Update the maintainers information for the
operating-points-v2-ti-cpu DT binding (Dhruva Gole)
- Drop unnecessary of_match_ptr() from ti-opp-supply (Rob Herring)
- Add missing MODULE_DESCRIPTION() macros to devfreq governors (Jeff
Johnson)
- Use devm_clk_get_enabled() in the exynos-bus devfreq driver (Anand
Moon)
- Use of_property_present() instead of of_get_property() in the
imx-bus devfreq driver (Rob Herring)
- Update directory handling and installation process in the pm-graph
Makefile and add .gitignore to ignore sleepgraph.py artifacts to
pm-graph (Amit Vadhavana, Yo-Jung Lin)
- Make cpupower display residency value in idle-info (Aboorva
Devarajan)
- Add missing powercap_set_enabled() stub function to cpupower (John
B. Wyatt IV)
- Add SWIG support to cpupower (John B. Wyatt IV)"
* tag 'pm-6.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (62 commits)
cpufreq/amd-pstate-ut: Fix an "Uninitialized variables" issue
cpufreq/amd-pstate-ut: Add test case for mode switches
cpufreq/amd-pstate: Export symbols for changing modes
amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking`
cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore`
cpufreq: amd-pstate: Optimize amd_pstate_update_limits()
cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator()
x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator()
x86/amd: Move amd_get_highest_perf() out of amd-pstate
ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn
ACPI: CPPC: Drop check for non zero perf ratio
x86/amd: Rename amd_get_highest_perf() to amd_get_boost_ratio_numerator()
ACPI: CPPC: Adjust return code for inline functions in !CONFIG_ACPI_CPPC_LIB
x86/amd: Move amd_get_highest_perf() from amd.c to cppc.c
PM: hibernate: Remove unused stub for saveable_highmem_page()
pm:cpupower: Add error warning when SWIG is not installed
MAINTAINERS: Add Maintainers for SWIG Python bindings
pm:cpupower: Include test_raw_pylibcpupower.py
pm:cpupower: Add SWIG bindings files for libcpupower
pm:cpupower: Add missing powercap_set_enabled() stub function
...
|
||
|
Linus Torvalds
|
114143a595 |
arm64 updates for 6.12
ACPI:
* Enable PMCG erratum workaround for HiSilicon HIP10 and 11 platforms.
* Ensure arm64-specific IORT header is covered by MAINTAINERS.
CPU Errata:
* Enable workaround for hardware access/dirty issue on Ampere-1A cores.
Memory management:
* Define PHYSMEM_END to fix a crash in the amdgpu driver.
* Avoid tripping over invalid kernel mappings on the kexec() path.
* Userspace support for the Permission Overlay Extension (POE) using
protection keys.
Perf and PMUs:
* Add support for the "fixed instruction counter" extension in the CPU
PMU architecture.
* Extend and fix the event encodings for Apple's M1 CPU PMU.
* Allow LSM hooks to decide on SPE permissions for physical profiling.
* Add support for the CMN S3 and NI-700 PMUs.
Confidential Computing:
* Add support for booting an arm64 kernel as a protected guest under
Android's "Protected KVM" (pKVM) hypervisor.
Selftests:
* Fix vector length issues in the SVE/SME sigreturn tests
* Fix build warning in the ptrace tests.
Timers:
* Add support for PR_{G,S}ET_TSC so that 'rr' can deal with
non-determinism arising from the architected counter.
Miscellaneous:
* Rework our IPI-based CPU stopping code to try NMIs if regular IPIs
don't succeed.
* Minor fixes and cleanups.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"The highlights are support for Arm's "Permission Overlay Extension"
using memory protection keys, support for running as a protected guest
on Android as well as perf support for a bunch of new interconnect
PMUs.
Summary:
ACPI:
- Enable PMCG erratum workaround for HiSilicon HIP10 and 11
platforms.
- Ensure arm64-specific IORT header is covered by MAINTAINERS.
CPU Errata:
- Enable workaround for hardware access/dirty issue on Ampere-1A
cores.
Memory management:
- Define PHYSMEM_END to fix a crash in the amdgpu driver.
- Avoid tripping over invalid kernel mappings on the kexec() path.
- Userspace support for the Permission Overlay Extension (POE) using
protection keys.
Perf and PMUs:
- Add support for the "fixed instruction counter" extension in the
CPU PMU architecture.
- Extend and fix the event encodings for Apple's M1 CPU PMU.
- Allow LSM hooks to decide on SPE permissions for physical
profiling.
- Add support for the CMN S3 and NI-700 PMUs.
Confidential Computing:
- Add support for booting an arm64 kernel as a protected guest under
Android's "Protected KVM" (pKVM) hypervisor.
Selftests:
- Fix vector length issues in the SVE/SME sigreturn tests
- Fix build warning in the ptrace tests.
Timers:
- Add support for PR_{G,S}ET_TSC so that 'rr' can deal with
non-determinism arising from the architected counter.
Miscellaneous:
- Rework our IPI-based CPU stopping code to try NMIs if regular IPIs
don't succeed.
- Minor fixes and cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (94 commits)
perf: arm-ni: Fix an NULL vs IS_ERR() bug
arm64: hibernate: Fix warning for cast from restricted gfp_t
arm64: esr: Define ESR_ELx_EC_* constants as UL
arm64: pkeys: remove redundant WARN
perf: arm_pmuv3: Use BR_RETIRED for HW branch event if enabled
MAINTAINERS: List Arm interconnect PMUs as supported
perf: Add driver for Arm NI-700 interconnect PMU
dt-bindings/perf: Add Arm NI-700 PMU
perf/arm-cmn: Improve format attr printing
perf/arm-cmn: Clean up unnecessary NUMA_NO_NODE check
arm64/mm: use lm_alias() with addresses passed to memblock_free()
mm: arm64: document why pte is not advanced in contpte_ptep_set_access_flags()
arm64: Expose the end of the linear map in PHYSMEM_END
arm64: trans_pgd: mark PTEs entries as valid to avoid dead kexec()
arm64/mm: Delete __init region from memblock.reserved
perf/arm-cmn: Support CMN S3
dt-bindings: perf: arm-cmn: Add CMN S3
perf/arm-cmn: Refactor DTC PMU register access
perf/arm-cmn: Make cycle counts less surprising
perf/arm-cmn: Improve build-time assertion
...
|
||
|
Linus Torvalds
|
963d0d60d6 |
- Add CONFIG_ option for every hw CPU mitigation. The intent is to support
configurations and scenarios where the mitigations code is irrelevant - Other small fixlets and improvements -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmbfDhUACgkQEsHwGGHe VUrF9A//UkVKmIihXXak0GPqFhu8XrWeYlmwLxWe/uIy2hZCLp9L7n4pg0Ikxqz3 9D9hYk+Jykfu/jsv0sR6LH6OAUTlJi+P0w3x3VeL1sgFPUkwFtOaN2v/t5H3SW5r l+VQpdUXPmLH6QbhvT84U6L/OQYr2cjhiYro47uwM9vO/SNao4HcbC/pdBr2dwxM KzzA9sEDg3Le391phIhEOIogA1lPNV7KMScg2VjPTqQzEJ3NQVzyYmqjPO70sN9F sAuksdF+rnPjc9K/W+qUcvlp8e9lDB8g0oPlyoOeubjXsnZU5YchriPdBbyAl0dJ bjpftXIrBj8Vtmh7Tc0Jx2tlMFXNT5FrzcqdD4sviLnhrKEJSkwAoFgIMp5A+tN8 Kl8MrlABO8I8+zGRQB7TzhwaCC4AxCqUS3UEcYd4CBf5AWqT5i12ijbtIxPtdpG4 5itngIV4HT8casudpC8i8OTjOTggorMa7Pu/bQULhnZwagH8chlBdoOlKKQVkeVG FUi+L/BljL9mASic7NRZI11tk44m9xWWkbbJOPlZaGJw9YzGrxD0YOfhbgcc9iaX SOUMVJEhJVJMBISGiBUQDB6r51ee6B8RKJ3ByxzpAbwsUR9cXyfSYfUyE5reQJy9 3luj/iorL3guYU6EGEAtvbuTLGbKqybrV6zOB/QRXHWyhtUgrUA= =GFld -----END PGP SIGNATURE----- Merge tag 'x86_bugs_for_v6.12_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 hw mitigation updates from Borislav Petkov: - Add CONFIG_ option for every hw CPU mitigation. The intent is to support configurations and scenarios where the mitigations code is irrelevant - Other small fixlets and improvements * tag 'x86_bugs_for_v6.12_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/bugs: Fix handling when SRSO mitigation is disabled x86/bugs: Add missing NO_SSB flag Documentation/srso: Document a method for checking safe RET operates properly x86/bugs: Add a separate config for GDS x86/bugs: Remove GDS Force Kconfig option x86/bugs: Add a separate config for SSB x86/bugs: Add a separate config for Spectre V2 x86/bugs: Add a separate config for SRBDS x86/bugs: Add a separate config for Spectre v1 x86/bugs: Add a separate config for RETBLEED x86/bugs: Add a separate config for L1TF x86/bugs: Add a separate config for MMIO Stable Data x86/bugs: Add a separate config for TAA x86/bugs: Add a separate config for MDS |
||
|
Joerg Roedel
|
97162f6093 | Merge branches 'fixes', 'arm/smmu', 'intel/vt-d', 'amd/amd-vi' and 'core' into next | ||
|
Rafael J. Wysocki
|
415dff1c96 |
Merge branch 'pm-cpufreq'
Merge cpufreq updates for 6.12-rc1: - Remove LATENCY_MULTIPLIER from cpufreq (Qais Yousef). - Add support for Granite Rapids and Sierra Forest in OOB mode to the intel_pstate cpufreq driver (Srinivas Pandruvada). - Add basic support for CPU capacity scaling on x86 and make the intel_pstate driver set asymmetric CPU capacity on hybrid systems without SMT (Rafael Wysocki). - Add missing MODULE_DESCRIPTION() macros to the powerpc cpufreq driver (Jeff Johnson). - Several OF related cleanups in cpufreq drivers (Rob Herring). - Enable COMPILE_TEST for ARM drivers (Rob Herrring). - Introduce quirks for syscon failures and use socinfo to get revision for TI cpufreq driver (Dhruva Gole, Nishanth Menon). - Minor cleanups in amd-pstate driver (Anastasia Belova, Dhananjay Ugwekar). - Minor cleanups for loongson, cpufreq-dt and powernv cpufreq drivers (Danila Tikhonov, Huacai Chen, and Liu Jing). - Make amd-pstate validate return of any attempt to update EPP limits, which fixes the masking hardware problems (Mario Limonciello). - Move the calculation of the AMD boost numerator outside of amd-pstate, correcting acpi-cpufreq on systems with preferred cores (Mario Limonciello). - Harden preferred core detection in amd-pstate to avoid potential false positives (Mario Limonciello). - Add extra unit test coverage for mode state machine (Mario Limonciello). - Fix an "Uninitialized variables" issue in amd-pstste (Qianqiang Liu). * pm-cpufreq: (35 commits) cpufreq/amd-pstate-ut: Fix an "Uninitialized variables" issue cpufreq/amd-pstate-ut: Add test case for mode switches cpufreq/amd-pstate: Export symbols for changing modes amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking` cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore` cpufreq: amd-pstate: Optimize amd_pstate_update_limits() cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator() x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator() x86/amd: Move amd_get_highest_perf() out of amd-pstate ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn ACPI: CPPC: Drop check for non zero perf ratio x86/amd: Rename amd_get_highest_perf() to amd_get_boost_ratio_numerator() ACPI: CPPC: Adjust return code for inline functions in !CONFIG_ACPI_CPPC_LIB x86/amd: Move amd_get_highest_perf() from amd.c to cppc.c cpufreq/amd-pstate: Catch failures for amd_pstate_epp_update_limit() cpufreq: ti-cpufreq: Use socinfo to get revision in AM62 family cpufreq: Fix the cacography in powernv-cpufreq.c cpufreq: ti-cpufreq: Introduce quirks to handle syscon fails appropriately cpufreq: loongson3: Use raw_smp_processor_id() in do_service_request() cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value ... |
||
|
Rafael J. Wysocki
|
9bcf30348f |
second round of amd-pstate changes for 6.12 (second try):
* Move the calculation of the AMD boost numerator outside of amd-pstate, correcting acpi-cpufreq on systems with preferred cores * Harden preferred core detection to avoid potential false positives * Add extra unit test coverage for mode state machine -----BEGIN PGP SIGNATURE----- iQJOBAABCgA4FiEECwtuSU6dXvs5GA2aLRkspiR3AnYFAmbhviEaHG1hcmlvLmxp bW9uY2llbGxvQGFtZC5jb20ACgkQLRkspiR3AnYqDA//TrvmXcpk1mnVJw3Y7MG0 /n8dsLpxqVtEf+USnlGR+iRhgSQ/W/Kr7b5a+jmdCwpHChuWHt2FnNgcHLIxDnZC vmEJ02/2BCRoPKvcvV4VTh0ATu3O9nqwQiBVWBdNjDy+Dzr0pzA+SQopt1hCIsO2 mzUodhpiBqYKlMf/i6+aM1gZCGGqoRC40aGqnJsgegb61vl7zIc2ZcbTxUQlyTfv t6J73IXLx8+YtrjejBYc7mRHhMQ2hCKy92C/8cNoGocj5faSKsAA3OUDcWq8qX0U zK3GGGdW8MLHSbt3VyntstnfiLL7TnzowcjvrMudIWpjC1987GlE9BApbN9VRZ8e ARN3Y7/ltjut/1fRB97BwjI9aDpzA0122Qzy4UOcK8o+be1eIr+ihV3Z9EN/snWg 0L/oq5+rGHvvIzf1BwGhoPSvgBIu7eMIYDcRxKPlEiKsbXrL4DdJC/nXgaZ/HiGO eHx1dNy7LFrdnEwVI1frZWC6ZuZcpmOBdhnfU+leVxzB3Z++Qc266rsxKBsc5taZ PPV18pxfbbl3iL85KDIbuBUCmA0aY8WEdCKtfXpl7zlB5g0fZQLyYeUbvahK08Sk vyQAnPECbX/4v1Vx54Z70GPk0XD2+TXdg8yApnXrmRc36z/SLdprk5hPKbKhZu/r iPxFUnvd0HCtjsLrsq/qUiQ= =R4HZ -----END PGP SIGNATURE----- Merge tag 'amd-pstate-v6.12-2024-09-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux Merge the second round of amd-pstate changes for 6.12 from Mario Limonciello: "* Move the calculation of the AMD boost numerator outside of amd-pstate, correcting acpi-cpufreq on systems with preferred cores * Harden preferred core detection to avoid potential false positives * Add extra unit test coverage for mode state machine" * tag 'amd-pstate-v6.12-2024-09-11' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: cpufreq/amd-pstate-ut: Fix an "Uninitialized variables" issue cpufreq/amd-pstate-ut: Add test case for mode switches cpufreq/amd-pstate: Export symbols for changing modes amd-pstate: Add missing documentation for `amd_pstate_prefcore_ranking` cpufreq: amd-pstate: Add documentation for `amd_pstate_hw_prefcore` cpufreq: amd-pstate: Optimize amd_pstate_update_limits() cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator() x86/amd: Detect preferred cores in amd_get_boost_ratio_numerator() x86/amd: Move amd_get_highest_perf() out of amd-pstate ACPI: CPPC: Adjust debug messages in amd_set_max_freq_ratio() to warn ACPI: CPPC: Drop check for non zero perf ratio x86/amd: Rename amd_get_highest_perf() to amd_get_boost_ratio_numerator() ACPI: CPPC: Adjust return code for inline functions in !CONFIG_ACPI_CPPC_LIB x86/amd: Move amd_get_highest_perf() from amd.c to cppc.c |
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Mario Limonciello
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15a2b764ea |
amd-pstate: Add missing documentation for amd_pstate_prefcore_ranking
`amd_pstate_prefcore_ranking` reflects the dynamic rankings of a CPU core based on platform conditions. Explicitly include it in the documentation. Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Mario Limonciello
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b96b82d1af |
cpufreq: amd-pstate: Add documentation for amd_pstate_hw_prefcore
Explain that the sysfs file represents both preferred core being enabled by the user and supported by the hardware. Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Mario Limonciello
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ad4caad58d |
cpufreq: amd-pstate: Merge amd_pstate_highest_perf_set() into amd_get_boost_ratio_numerator()
The special case in amd_pstate_highest_perf_set() is the value used for calculating the boost numerator. Merge this into amd_get_boost_ratio_numerator() and then use that to calculate boost ratio. This allows dropping more special casing of the highest perf value. Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Thomas Gleixner
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2f7eedca6c |
Merge branch 'linus' into timers/core
To update with the latest fixes. |
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Joerg Roedel
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f0295913c4 |
iommu/amd: Add kernel parameters to limit V1 page-sizes
Add two new kernel command line parameters to limit the page-sizes used for v1 page-tables: nohugepages - Limits page-sizes to 4KiB v2_pgsizes_only - Limits page-sizes to 4Kib/2Mib/1GiB; The same as the sizes used with v2 page-tables This is needed for multiple scenarios. When assigning devices to SEV-SNP guests the IOMMU page-sizes need to match the sizes in the RMP table, otherwise the device will not be able to access all shared memory. Also, some ATS devices do not work properly with arbitrary IO page-sizes as supported by AMD-Vi, so limiting the sizes used by the driver is a suitable workaround. All-in-all, these parameters are only workarounds until the IOMMU core and related APIs gather the ability to negotiate the page-sizes in a better way. Signed-off-by: Joerg Roedel <jroedel@suse.de> Reviewed-by: Vasant Hegde <vasant.hegde@amd.com> Link: https://lore.kernel.org/r/20240905072240.253313-1-joro@8bytes.org |
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Sergey Senozhatsky
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e899007a5e |
zram: support priority parameter in recompression
recompress device attribute supports alg=NAME parameter so that we can specify only one particular algorithm we want to perform recompression with. However, with algo params we now can have several exactly same secondary algorithms but each with its own params tuning (e.g. priority 1 configured to use more aggressive level, and priority 2 configured to use a pre-trained dictionary). Support priority=NUM parameter so that we can correctly determine which secondary algorithm we want to use. Link: https://lkml.kernel.org/r/20240902105656.1383858-25-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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97ee4842f2 |
Documentation/zram: add documentation for algorithm parameters
Document brief description of compression algorithms' parameters: compression level and pre-trained dictionary. [senozhatsky@chromium.org: trivial fixup] Link: https://lkml.kernel.org/r/20240903063722.1603592-1-senozhatsky@chromium.org Link: https://lkml.kernel.org/r/20240902105656.1383858-24-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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4eac932103 |
zram: introduce algorithm_params device attribute
This attribute is used to setup compression algorithms' parameters, so we can tweak algorithms' characteristics. At this point only 'level' is supported (to be extended in the future). Each call sets up parameters for one particular algorithm, which should be specified either by the algorithm's priority or algo name. This is expected to be called after corresponding algorithm is selected via comp_algorithm or recomp_algorithm. echo "priority=0 level=1" > /sys/block/zram0/algorithm_params or echo "algo=zstd level=1" > /sys/block/zram0/algorithm_params Link: https://lkml.kernel.org/r/20240902105656.1383858-16-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sergey Senozhatsky
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917a59e81c |
zram: introduce custom comp backends API
Moving to custom backends implementation gives us ability to have our own minimalistic and extendable API, and algorithms tunings becomes possible. The list of compression backends is empty at this point, we will add backends in the followup patches. Link: https://lkml.kernel.org/r/20240902105656.1383858-5-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Nick Terrell <terrelln@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Usama Arif
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81d3ff3c6f |
mm: add sysfs entry to disable splitting underused THPs
If disabled, THPs faulted in or collapsed will not be added to _deferred_list, and therefore won't be considered for splitting under memory pressure if underused. Link: https://lkml.kernel.org/r/20240830100438.3623486-7-usamaarif642@gmail.com Signed-off-by: Usama Arif <usamaarif642@gmail.com> Cc: Alexander Zhu <alexlzhu@fb.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kairui Song <ryncsn@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nico Pache <npache@redhat.com> Cc: Rik van Riel <riel@surriel.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Shuang Zhai <zhais@google.com> Cc: Shuang Zhai <szhai2@cs.rochester.edu> Cc: Yu Zhao <yuzhao@google.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Usama Arif
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dafff3f4c8 |
mm: split underused THPs
This is an attempt to mitigate the issue of running out of memory when THP is always enabled. During runtime whenever a THP is being faulted in (__do_huge_pmd_anonymous_page) or collapsed by khugepaged (collapse_huge_page), the THP is added to _deferred_list. Whenever memory reclaim happens in linux, the kernel runs the deferred_split shrinker which goes through the _deferred_list. If the folio was partially mapped, the shrinker attempts to split it. If the folio is not partially mapped, the shrinker checks if the THP was underused, i.e. how many of the base 4K pages of the entire THP were zero-filled. If this number goes above a certain threshold (decided by /sys/kernel/mm/transparent_hugepage/khugepaged/max_ptes_none), the shrinker will attempt to split that THP. Then at remap time, the pages that were zero-filled are mapped to the shared zeropage, hence saving memory. Link: https://lkml.kernel.org/r/20240830100438.3623486-6-usamaarif642@gmail.com Signed-off-by: Usama Arif <usamaarif642@gmail.com> Suggested-by: Rik van Riel <riel@surriel.com> Co-authored-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Alexander Zhu <alexlzhu@fb.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kairui Song <ryncsn@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nico Pache <npache@redhat.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Shuang Zhai <zhais@google.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Shuang Zhai <szhai2@cs.rochester.edu> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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23a425aab0 |
Docs/damon: use damonitor GitHub organization instead of awslabs
Patch series "Docs/damon: update GitHub repo URLs and maintainer-profile". Replace GitHub URLS on DAMON documents for none-kernel parts DAMON repos with new ones[1] via the first patch. With following two patches, wordsmith maitnainer-profile for better readability, and document the Google clendsar for bi-weekly meetups, respectively. [1] https://lore.kernel.org/20240813232158.83903-1-sj@kernel.org This patch (of 3): GitHub repos for non-kernel parts of DAMON project including 'damo', 'damon-tests' and 'damoos' will be moved[1] from 'awslabs' org to 'damonitor', by 2024-09-05. Update related URLs in kernel tree. [1] https://lore.kernel.org/20240813232158.83903-1-sj@kernel.org Link: https://lkml.kernel.org/r/20240826015741.80707-1-sj@kernel.org Link: https://lkml.kernel.org/r/20240826015741.80707-2-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Barry Song
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8175ebfd30 |
mm: count the number of partially mapped anonymous THPs per size
When a THP is added to the deferred_list due to partially mapped, its partial pages are unused, leading to wasted memory and potentially increasing memory reclamation pressure. Detailing the specifics of how unmapping occurs is quite difficult and not that useful, so we adopt a simple approach: each time a THP enters the deferred_list, we increment the count by 1; whenever it leaves for any reason, we decrement the count by 1. Link: https://lkml.kernel.org/r/20240824010441.21308-3-21cnbao@gmail.com Signed-off-by: Barry Song <v-songbaohua@oppo.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Chris Li <chrisl@kernel.org> Cc: Chuanhua Han <hanchuanhua@oppo.com> Cc: Kairui Song <kasong@tencent.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuai Yuan <yuanshuai@oppo.com> Cc: Usama Arif <usamaarif642@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Barry Song
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5d65c8d758 |
mm: count the number of anonymous THPs per size
Patch series "mm: count the number of anonymous THPs per size", v4.
Knowing the number of transparent anon THPs in the system is crucial
for performance analysis. It helps in understanding the ratio and
distribution of THPs versus small folios throughout the system.
Additionally, partial unmapping by userspace can lead to significant waste
of THPs over time and increase memory reclamation pressure. We need this
information for comprehensive system tuning.
This patch (of 2):
Let's track for each anonymous THP size, how many of them are currently
allocated. We'll track the complete lifespan of an anon THP, starting
when it becomes an anon THP ("large anon folio") (->mapping gets set),
until it gets freed (->mapping gets cleared).
Introduce a new "nr_anon" counter per THP size and adjust the
corresponding counter in the following cases:
* We allocate a new THP and call folio_add_new_anon_rmap() to map
it the first time and turn it into an anon THP.
* We split an anon THP into multiple smaller ones.
* We migrate an anon THP, when we prepare the destination.
* We free an anon THP back to the buddy.
Note that AnonPages in /proc/meminfo currently tracks the total number of
*mapped* anonymous *pages*, and therefore has slightly different
semantics. In the future, we might also want to track "nr_anon_mapped"
for each THP size, which might be helpful when comparing it to the number
of allocated anon THPs (long-term pinning, stuck in swapcache, memory
leaks, ...).
Further note that for now, we only track anon THPs after they got their
->mapping set, for example via folio_add_new_anon_rmap(). If we would
allocate some in the swapcache, they will only show up in the statistics
for now after they have been mapped to user space the first time, where we
call folio_add_new_anon_rmap().
[akpm@linux-foundation.org: documentation fixups, per David]
Link: https://lkml.kernel.org/r/3e8add35-e26b-443b-8a04-1078f4bc78f6@redhat.com
Link: https://lkml.kernel.org/r/20240824010441.21308-1-21cnbao@gmail.com
Link: https://lkml.kernel.org/r/20240824010441.21308-2-21cnbao@gmail.com
Signed-off-by: Barry Song <v-songbaohua@oppo.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Chris Li <chrisl@kernel.org>
Cc: Chuanhua Han <hanchuanhua@oppo.com>
Cc: Kairui Song <kasong@tencent.com>
Cc: Kalesh Singh <kaleshsingh@google.com>
Cc: Lance Yang <ioworker0@gmail.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Shuai Yuan <yuanshuai@oppo.com>
Cc: Usama Arif <usamaarif642@gmail.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Anna-Maria Behnsen
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bd7c8ff9fe |
treewide: Fix wrong singular form of jiffies in comments
There are several comments all over the place, which uses a wrong singular form of jiffies. Replace 'jiffie' by 'jiffy'. No functional change. Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> # m68k Link: https://lore.kernel.org/all/20240904-devel-anna-maria-b4-timers-flseep-v1-3-e98760256370@linutronix.de |
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Neeraj Upadhyay
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355debb83b | Merge branches 'context_tracking.15.08.24a', 'csd.lock.15.08.24a', 'nocb.09.09.24a', 'rcutorture.14.08.24a', 'rcustall.09.09.24a', 'srcu.12.08.24a', 'rcu.tasks.14.08.24a', 'rcu_scaling_tests.15.08.24a', 'fixes.12.08.24a' and 'misc.11.08.24a' into next.09.09.24a | ||
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Robin Murphy
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4d5a7680f2 |
perf: Add driver for Arm NI-700 interconnect PMU
The Arm NI-700 Network-on-Chip Interconnect has a relatively straightforward design with a hierarchy of voltage, power, and clock domains, where each clock domain then contains a number of interface units and a PMU which can monitor events thereon. As such, it begets a relatively straightforward driver to interface those PMUs with perf. Even more so than with arm-cmn, users will require detailed knowledge of the wider system topology in order to meaningfully analyse anything, since the interconnect itself cannot know what lies beyond the boundary of each inscrutably-numbered interface. Given that, for now they are also expected to refer to the NI-700 documentation for the relevant event IDs to provide as well. An identifier is implemented so we can come back and add jevents if anyone really wants to. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/9933058d0ab8138c78a61cd6852ea5d5ff48e393.1725470837.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org> |
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Guilherme G. Piccoli
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e04eb52bfa |
Documentation: Document the kernel flag bdev_allow_write_mounted
Commit
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Jonathan Corbet
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d224338aa1 |
Linux 6.11-rc6
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmbUG7oeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiG7LUH/26M4QJ5UGJHsehd bbHlE4or0jibFyMbUiYDOElqLITjCVH6mi3Kv3E7sfyLxSsglVRRNzLCTq/UgTf8 E1L90q4wCySElzzIhH6cltuQdAhs7pRWs5BETByvIW+g+ayN0LZxUPbvB8yl/nOU Zx8flBEuM2isuRlnx+iRccbf2PxNadSkSYg2TlmZr8mfFKCiRxjU7x355Q3UcylQ b8S2jVgq69CSDF3IBOzwHZjdq5OceDsO8he0KcfSTvSgyFMcwhntAT397YEnFXnk KKjKPNCu3KqHtTxsi4Sc0wOxVcgctDv4OPethaL8yROQ7jdBTkvNpPT1yMf7bca8 ZLpSo5Y= =TBcj -----END PGP SIGNATURE----- Merge tag 'v6.11-rc6' into docs-mw This is done primarily to get a docs build fix merged via another tree so that "make htmldocs" stops failing. |
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Hans Verkuil
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056f2821b6 |
media: cec: extron-da-hd-4k-plus: add the Extron DA HD 4K Plus CEC driver
Add support for the Extron DA HD 4K Plus series of 4K HDMI Distrubution Amplifiers (aka HDMI Splitters). These devices support CEC and this driver adds support for the CEC protocol for both the input and all outputs (2, 4 or 6 outputs, depending on the model). It also exports the EDID from the outputs and allows reading and setting the EDID of the input. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> |
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Hans de Goede
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56d8b784c5 |
hwmon fixes for v6.11-rc7
hp-wmi-sensors: Check if WMI event data exists before accessing it
ltc2991: fix register bits defines
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Merge tag 'hwmon-for-v6.11-rc7' into review-hans
Merge "hwmon fixes for v6.11-rc7" into review-hans to bring in
commit
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Tero Kristo
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8022ae2c43 |
Documentation: admin-guide: pm: Add efficiency vs. latency tradeoff to uncore documentation
Added documentation about the functionality of efficiency vs. latency tradeoff control in intel Xeon processors, and how this is configured via sysfs. Signed-off-by: Tero Kristo <tero.kristo@linux.intel.com> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/r/20240828153657.1296410-2-tero.kristo@linux.intel.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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Sean Christopherson
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b4886fab6f |
KVM: Add a module param to allow enabling virtualization when KVM is loaded
Add an on-by-default module param, enable_virt_at_load, to let userspace
force virtualization to be enabled in hardware when KVM is initialized,
i.e. just before /dev/kvm is exposed to userspace. Enabling virtualization
during KVM initialization allows userspace to avoid the additional latency
when creating/destroying the first/last VM (or more specifically, on the
0=>1 and 1=>0 edges of creation/destruction).
Now that KVM uses the cpuhp framework to do per-CPU enabling, the latency
could be non-trivial as the cpuhup bringup/teardown is serialized across
CPUs, e.g. the latency could be problematic for use case that need to spin
up VMs quickly.
Prior to commit
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Mike Yuan
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5a53623d0f |
Documentation/cgroup-v2: clarify that zswap.writeback is ignored if zswap is disabled
As discussed in [1], zswap-related settings natually lose their effect when zswap is disabled, specifically zswap.writeback here. Be explicit about this behavior. [1] https://lore.kernel.org/linux-kernel/CAKEwX=Mhbwhh-=xxCU-RjMXS_n=RpV3Gtznb2m_3JgL+jzz++g@mail.gmail.com/ [akpm@linux-foundation.org: fix/simplify text] Link: https://lkml.kernel.org/r/20240823162506.12117-3-me@yhndnzj.com Signed-off-by: Mike Yuan <me@yhndnzj.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Michal Koutný <mkoutny@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nhat Pham <nphamcs@gmail.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Yosry Ahmed <yosryahmed@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kaiyang Zhao
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f77f0c7514 |
mm,memcg: provide per-cgroup counters for NUMA balancing operations
The ability to observe the demotion and promotion decisions made by the kernel on a per-cgroup basis is important for monitoring and tuning containerized workloads on machines equipped with tiered memory. Different containers in the system may experience drastically different memory tiering actions that cannot be distinguished from the global counters alone. For example, a container running a workload that has a much hotter memory accesses will likely see more promotions and fewer demotions, potentially depriving a colocated container of top tier memory to such an extent that its performance degrades unacceptably. For another example, some containers may exhibit longer periods between data reuse, causing much more numa_hint_faults than numa_pages_migrated. In this case, tuning hot_threshold_ms may be appropriate, but the signal can easily be lost if only global counters are available. In the long term, we hope to introduce per-cgroup control of promotion and demotion actions to implement memory placement policies in tiering. This patch set adds seven counters to memory.stat in a cgroup: numa_pages_migrated, numa_pte_updates, numa_hint_faults, pgdemote_kswapd, pgdemote_khugepaged, pgdemote_direct and pgpromote_success. pgdemote_* and pgpromote_success are also available in memory.numa_stat. count_memcg_events_mm() is added to count multiple event occurrences at once, and get_mem_cgroup_from_folio() is added because we need to get a reference to the memcg of a folio before it's migrated to track numa_pages_migrated. The accounting of PGDEMOTE_* is moved to shrink_inactive_list() before being changed to per-cgroup. [kaiyang2@cs.cmu.edu: add documentation of the memcg counters in cgroup-v2.rst] Link: https://lkml.kernel.org/r/20240814235122.252309-1-kaiyang2@cs.cmu.edu Link: https://lkml.kernel.org/r/20240814174227.30639-1-kaiyang2@cs.cmu.edu Signed-off-by: Kaiyang Zhao <kaiyang2@cs.cmu.edu> Cc: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Wei Xu <weixugc@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Mike Rapoport (Microsoft)
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101d647080 |
docs: move numa=fake description to kernel-parameters.txt
NUMA emulation can be now enabled on arm64 and riscv in addition to x86. Move description of numa=fake parameters from x86 documentation of admin-guide/kernel-parameters.txt Link: https://lkml.kernel.org/r/20240807064110.1003856-27-rppt@kernel.org Suggested-by: Zi Yan <ziy@nvidia.com> Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU] Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Alexander Gordeev <agordeev@linux.ibm.com> Cc: Andreas Larsson <andreas@gaisler.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: David S. Miller <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Rafael J. Wysocki <rafael@kernel.org> Cc: Rob Herring (Arm) <robh@kernel.org> Cc: Samuel Holland <samuel.holland@sifive.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sourabh Jain
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c91c6062d6 |
Document/kexec: generalize crash hotplug description
Commit
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Shakeel Butt
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340afb8027 |
memcg: initiate deprecation of pressure_level
The pressure_level in memcg v1 provides memory pressure notifications to the user space. At the moment it provides notifications for three levels of memory pressure i.e. low, medium and critical, which are defined based on internal memory reclaim implementation details. More specifically the ratio of scanned and reclaimed pages during a memory reclaim. However this is not robust as there are workloads with mostly unreclaimable user memory or kernel memory. For v2, the users can use PSI for memory pressure status of the system or the cgroup. Let's start the deprecation process for pressure_level and add warnings to gather the info on how the current users are using this interface and how they can be used to PSI. Link: https://lkml.kernel.org/r/20240814220021.3208384-5-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: T.J. Mercier <tjmercier@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Shakeel Butt
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6df4ad7047 |
memcg: initiate deprecation of oom_control
The oom_control provides functionality to disable memcg oom-killer, notifications on oom-kill and reading the stats regarding oom-kills. This interface was mainly introduced to provide functionality for userspace oom-killers. However it is not robust enough and only supports OOM handling in the page fault path. For v2, the users can use the combination of memory.events notifications, memory.high and PSI to provide userspace OOM-killing functionality. Actually LMKD in Android and OOMd in systemd and Meta infrastructure already use PSI in combination with other stats to implement userspace OOM-killing. Let's start the deprecation process for v1 and gather the info on how the current users are using this interface and work on providing a more robust functionality in v2. Link: https://lkml.kernel.org/r/20240814220021.3208384-4-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: T.J. Mercier <tjmercier@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Shakeel Butt
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569c4f62d8 |
memcg: initiate deprecation of v1 soft limit
Memcg v1 provides soft limit functionality for the best effort memory sharing between multiple workloads on a system. It is usually triggered through kswapd and at the moment does not reclaim kernel memory. Memcg v2 provides more straightforward best effort (memory.low) and hard protection (memory.min) functionalities. Let's initiate the deprecation of soft limit from v1 and gather if v2 needs something more to move the existing v1 users to v2 regarding soft limit. Link: https://lkml.kernel.org/r/20240814220021.3208384-3-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: T.J. Mercier <tjmercier@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Shakeel Butt
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d046ff46ee |
memcg: initiate deprecation of v1 tcp accounting
Patch series "memcg: initiate deprecation of v1 features", v2. Start the deprecation process of the memcg v1 features which we discussed during LSFMMBPF 2024 [1]. For now add the warnings to collect the information on how the current users are using these features. Next we will work on providing better alternatives in v2 (if needed) and fully deprecate these features. Link: https://lwn.net/Articles/974575 [1] This patch (of 4): Memcg v1 provides opt-in TCP memory accounting feature. However it is mostly unused due to its performance impact on the network traffic. In v2, the TCP memory is accounted in the regular memory usage and is transparent to the users but they can observe the TCP memory usage through memcg stats. Let's initiate the deprecation process of memcg v1's tcp accounting functionality and add warnings to gather if there are any users and if there are, collect how they are using it and plan to provide them better alternative in v2. Link: https://lkml.kernel.org/r/20240814220021.3208384-1-shakeel.butt@linux.dev Link: https://lkml.kernel.org/r/20240814220021.3208384-2-shakeel.butt@linux.dev Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev> Reviewed-by: T.J. Mercier <tjmercier@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Roman Gushchin <roman.gushchin@linux.dev> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Muchun Song <muchun.song@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ryan Roberts
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dd4d30d1cd |
mm: override mTHP "enabled" defaults at kernel cmdline
Add thp_anon= cmdline parameter to allow specifying the default enablement of each supported anon THP size. The parameter accepts the following format and can be provided multiple times to configure each size: thp_anon=<size>,<size>[KMG]:<value>;<size>-<size>[KMG]:<value> An example: thp_anon=16K-64K:always;128K,512K:inherit;256K:madvise;1M-2M:never See Documentation/admin-guide/mm/transhuge.rst for more details. Configuring the defaults at boot time is useful to allow early user space to take advantage of mTHP before its been configured through sysfs. [v-songbaohua@oppo.com: use get_oder() and check size is is_power_of_2] Link: https://lkml.kernel.org/r/20240814224635.43272-1-21cnbao@gmail.com [ryan.roberts@arm.com: some minor cleanup according to David's comments] Link: https://lkml.kernel.org/r/20240820105244.62703-1-21cnbao@gmail.com Link: https://lkml.kernel.org/r/20240814020247.67297-1-21cnbao@gmail.com Signed-off-by: Ryan Roberts <ryan.roberts@arm.com> Co-developed-by: Barry Song <v-songbaohua@oppo.com> Signed-off-by: Barry Song <v-songbaohua@oppo.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Tested-by: Baolin Wang <baolin.wang@linux.alibaba.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <ioworker0@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Finkel
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c6f53ed8f2 |
mm, memcg: cg2 memory{.swap,}.peak write handlers
Patch series "mm, memcg: cg2 memory{.swap,}.peak write handlers", v7.
This patch (of 2):
Other mechanisms for querying the peak memory usage of either a process or
v1 memory cgroup allow for resetting the high watermark. Restore parity
with those mechanisms, but with a less racy API.
For example:
- Any write to memory.max_usage_in_bytes in a cgroup v1 mount resets
the high watermark.
- writing "5" to the clear_refs pseudo-file in a processes's proc
directory resets the peak RSS.
This change is an evolution of a previous patch, which mostly copied the
cgroup v1 behavior, however, there were concerns about races/ownership
issues with a global reset, so instead this change makes the reset
filedescriptor-local.
Writing any non-empty string to the memory.peak and memory.swap.peak
pseudo-files reset the high watermark to the current usage for subsequent
reads through that same FD.
Notably, following Johannes's suggestion, this implementation moves the
O(FDs that have written) behavior onto the FD write(2) path. Instead, on
the page-allocation path, we simply add one additional watermark to
conditionally bump per-hierarchy level in the page-counter.
Additionally, this takes Longman's suggestion of nesting the
page-charging-path checks for the two watermarks to reduce the number of
common-case comparisons.
This behavior is particularly useful for work scheduling systems that need
to track memory usage of worker processes/cgroups per-work-item. Since
memory can't be squeezed like CPU can (the OOM-killer has opinions), these
systems need to track the peak memory usage to compute system/container
fullness when binpacking workitems.
Most notably, Vimeo's use-case involves a system that's doing global
binpacking across many Kubernetes pods/containers, and while we can use
PSI for some local decisions about overload, we strive to avoid packing
workloads too tightly in the first place. To facilitate this, we track
the peak memory usage. However, since we run with long-lived workers (to
amortize startup costs) we need a way to track the high watermark while a
work-item is executing. Polling runs the risk of missing short spikes
that last for timescales below the polling interval, and peak memory
tracking at the cgroup level is otherwise perfect for this use-case.
As this data is used to ensure that binpacked work ends up with sufficient
headroom, this use-case mostly avoids the inaccuracies surrounding
reclaimable memory.
Link: https://lkml.kernel.org/r/20240730231304.761942-1-davidf@vimeo.com
Link: https://lkml.kernel.org/r/20240729143743.34236-1-davidf@vimeo.com
Link: https://lkml.kernel.org/r/20240729143743.34236-2-davidf@vimeo.com
Signed-off-by: David Finkel <davidf@vimeo.com>
Suggested-by: Johannes Weiner <hannes@cmpxchg.org>
Suggested-by: Waiman Long <longman@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Mike Yuan
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e399257349 |
mm/memcontrol: respect zswap.writeback setting from parent cg too
Currently, the behavior of zswap.writeback wrt. the cgroup hierarchy
seems a bit odd. Unlike zswap.max, it doesn't honor the value from parent
cgroups. This surfaced when people tried to globally disable zswap
writeback, i.e. reserve physical swap space only for hibernation [1] -
disabling zswap.writeback only for the root cgroup results in subcgroups
with zswap.writeback=1 still performing writeback.
The inconsistency became more noticeable after I introduced the
MemoryZSwapWriteback= systemd unit setting [2] for controlling the knob.
The patch assumed that the kernel would enforce the value of parent
cgroups. It could probably be workarounded from systemd's side, by going
up the slice unit tree and inheriting the value. Yet I think it's more
sensible to make it behave consistently with zswap.max and friends.
[1] https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate#Disable_zswap_writeback_to_use_the_swap_space_only_for_hibernation
[2] https://github.com/systemd/systemd/pull/31734
Link: https://lkml.kernel.org/r/20240823162506.12117-1-me@yhndnzj.com
Fixes:
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Yicong Yang
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d1c93d5c67 |
drivers/perf: hisi_pcie: Export supported Root Ports [bdf_min, bdf_max]
Currently users can get the Root Ports supported by the PCIe PMU by "bus" sysfs attributes which indicates the PCIe bus number where Root Ports are located. This maybe insufficient since Root Ports supported by different PCIe PMUs may be located on the same PCIe bus. So export the BDF range the Root Ports additionally. Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240829090332.28756-4-yangyicong@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Adrian Ratiu
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41e8149c88
|
proc: add config & param to block forcing mem writes
This adds a Kconfig option and boot param to allow removing the FOLL_FORCE flag from /proc/pid/mem write calls because it can be abused. The traditional forcing behavior is kept as default because it can break GDB and some other use cases. Previously we tried a more sophisticated approach allowing distributions to fine-tune /proc/pid/mem behavior, however that got NAK-ed by Linus [1], who prefers this simpler approach with semantics also easier to understand for users. Link: https://lore.kernel.org/lkml/CAHk-=wiGWLChxYmUA5HrT5aopZrB7_2VTa0NLZcxORgkUe5tEQ@mail.gmail.com/ [1] Cc: Doug Anderson <dianders@chromium.org> Cc: Jeff Xu <jeffxu@google.com> Cc: Jann Horn <jannh@google.com> Cc: Kees Cook <kees@kernel.org> Cc: Ard Biesheuvel <ardb@kernel.org> Cc: Christian Brauner <brauner@kernel.org> Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Adrian Ratiu <adrian.ratiu@collabora.com> Link: https://lore.kernel.org/r/20240802080225.89408-1-adrian.ratiu@collabora.com Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Borislav Petkov (AMD)
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4015350525 |
Documentation/srso: Document a method for checking safe RET operates properly
Add a method to quickly verify whether safe RET operates properly on a given system using perf tool. Also, add a selftest which does the same thing. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240731160531.28640-1-bp@kernel.org |
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Stefan Tauner
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736c24e62e |
Documentation: ext4.rst: remove obsolete descriptions of noacl/nouser_xattr options
These have been deprecated for a decade[1] and removed two years ago[2]. 1: |
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Jani Nikula
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cd0403adea |
Documentation: admin-guide: direct people to bug trackers, if specified
Update bug reporting info in bug-hunting.rst to direct people to driver/subsystem bug trackers, if explicitly specified with the MAINTAINERS "B:" entry. Use the new get_maintainer.pl --bug option to print the info. Cc: Joe Perches <joe@perches.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240815113450.3397499-2-jani.nikula@intel.com |
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Thorsten Leemhuis
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cbbdb6c625 |
docs: bug-bisect: rewrite to better match the other bisecting text
Rewrite the short document on bisecting kernel bugs. The new text improves .config handling, brings a mention of 'git bisect skip', and explains what to do after the bisection finished -- including trying a revert to verify the result. The rewrite at the same time removes the unrelated and outdated section on 'Devices not appearing' and replaces some sentences about bug reporting with a pointer to the document covering that topic in detail. This overall brings the approach close to the one in the recently added text Documentation/admin-guide/verify-bugs-and-bisect-regressions.rst. As those two texts serve a similar purpose for different audiences, mention that document in the head of this one and outline when the other might be the better one to follow. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Reviewed-by: Petr Tesarik <petr@tesarici.cz> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/74dc0137dcc3e2c05648e885a7bc31ffd39a0890.1724312119.git.linux@leemhuis.info |
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Steven Rostedt
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2fcd5aff92 |
tracing/Documentation: Start a document on how to debug with tracing
Add a new document Documentation/trace/debugging.rst that will hold various ways to debug tracing. This initial version mentions trace_printk and how to create persistent buffers that can last across bootups. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineeth Pillai <vineeth@bitbyteword.org> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ross Zwisler <zwisler@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Alexander Aring <aahringo@redhat.com> Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Cc: Tomas Glozar <tglozar@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Jonathan Corbet" <corbet@lwn.net> Link: https://lore.kernel.org/20240823014019.702433486@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
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9b7bdf6f6e |
tracing: Have trace_printk not use binary prints if boot buffer
If the persistent boot mapped ring buffer is used for trace_printk(), force it to not use the binary versions. trace_printk() by default uses bin_printf() that only saves the pointer to the format and not the format itself inside the ring buffer. But for a persistent buffer that is read after reboot, the pointers to the format strings may not be the same, or worse, not even exist! Instead, just force the more robust, but slower, version that does the formatting before saving into the ring buffer. The boot mapped buffer can now be used for trace_printk and friends! Using the trace_printk() and the persistent buffer was used to debug the issue with the osnoise tracer: Link: https://lore.kernel.org/all/20240822103443.6a6ae051@gandalf.local.home/ Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineeth Pillai <vineeth@bitbyteword.org> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ross Zwisler <zwisler@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Alexander Aring <aahringo@redhat.com> Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Cc: Tomas Glozar <tglozar@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Jonathan Corbet" <corbet@lwn.net> Link: https://lore.kernel.org/20240823014019.386925800@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
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ddb8ea9e5a |
tracing: Allow trace_printk() to go to other instance buffers
Currently, trace_printk() just goes to the top level ring buffer. But there may be times that it should go to one of the instances created by the kernel command line. Add a new trace_instance flag: traceprintk (also can use "printk" or "trace_printk" as people tend to forget the actual flag name). trace_instance=foo^traceprintk Will assign the trace_printk to this buffer at boot up. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineeth Pillai <vineeth@bitbyteword.org> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ross Zwisler <zwisler@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Alexander Aring <aahringo@redhat.com> Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Cc: Tomas Glozar <tglozar@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Jonathan Corbet" <corbet@lwn.net> Link: https://lore.kernel.org/20240823014019.226694946@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
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b6fc31b687 |
tracing: Add "traceoff" flag to boot time tracing instances
Add a "flags" delimiter (^) to the "trace_instance" kernel command line parameter, and add the "traceoff" flag. The format is: trace_instance=<name>[^<flag1>[^<flag2>]][@<memory>][,<events>] The code allows for more than one flag to be added, but currently only "traceoff" is done so. The motivation for this change came from debugging with the persistent ring buffer and having trace_printk() writing to it. The trace_printk calls are always enabled, and the boot after the crash was having the unwanted trace_printks from the current boot inject into the ring buffer with the trace_printks of the crash kernel, making the output very confusing. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineeth Pillai <vineeth@bitbyteword.org> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ross Zwisler <zwisler@google.com> Cc: Kees Cook <keescook@chromium.org> Cc: Alexander Aring <aahringo@redhat.com> Cc: "Luis Claudio R. Goncalves" <lgoncalv@redhat.com> Cc: Tomas Glozar <tglozar@redhat.com> Cc: John Kacur <jkacur@redhat.com> Cc: Clark Williams <williams@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Jonathan Corbet" <corbet@lwn.net> Link: https://lore.kernel.org/20240823014019.053229958@goodmis.org Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Krishna chaitanya chundru
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96a37ec986 |
Documentation: dwc_pcie_pmu: Update bdf to sbdf
Update document to reflect the driver change to use sbdf instead of bdf alone. Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Link: https://lore.kernel.org/r/20240816-dwc_pmu_fix-v2-2-198b8ab1077c@quicinc.com Signed-off-by: Will Deacon <will@kernel.org> |
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Ingo Franzki
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4441686b24 |
dm-crypt: Allow to specify the integrity key size as option
For the MAC based integrity operation, the integrity key size (i.e. key_mac_size) is currently set to the digest size of the used digest. For wrapped key HMAC algorithms, the key size is independent of the cryptographic key size. So there is no known size of the mac key in such cases. The desired key size can optionally be specified as argument when the dm-crypt device is configured via 'integrity_key_size:%u'. If no integrity_key_size argument is specified, the mac key size is still set to the digest size, as before. Increase version number to 1.28.0 so that support for the new argument can be detected by user space (i.e. cryptsetup). Signed-off-by: Ingo Franzki <ifranzki@linux.ibm.com> Reviewed-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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Heinz Mauelshagen
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5d3691a826 |
dm delay: enhance kernel documentation
This commit improves documentation of the dm-delay target. Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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Bruce Johnston
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47874c98dc |
dm vdo: add dmsetup message for returning configuration info
Add a new dmsetup message called config, which will return useful configuration information for the vdo volume and the uds index associated with it. The output is a YAML string, and contains a version number to allow future additions to the content. Signed-off-by: Bruce Johnston <bjohnsto@redhat.com> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
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Deven Bowers
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ac6731870e |
documentation: add IPE documentation
Add IPE's admin and developer documentation to the kernel tree. Co-developed-by: Fan Wu <wufan@linux.microsoft.com> Signed-off-by: Deven Bowers <deven.desai@linux.microsoft.com> Signed-off-by: Fan Wu <wufan@linux.microsoft.com> Signed-off-by: Paul Moore <paul@paul-moore.com> |
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Chen Ridong
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d1a92d2d6c |
cgroup: update some statememt about delegation
The comment in cgroup_file_write is missing some interfaces, such as 'cgroup.threads'. All delegatable files are listed in '/sys/kernel/cgroup/delegate', so update the comment in cgroup_file_write. Besides, add a statement that files outside the namespace shouldn't be visible from inside the delegated namespace. tj: Reflowed text for consistency. Signed-off-by: Chen Ridong <chenridong@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Steven Rostedt (Google)
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29a02ec665 |
tracing: Allow boot instances to use reserve_mem boot memory
Allow boot instances to use memory reserved by the reserve_mem boot option. reserve_mem=12M:4096:trace trace_instance=boot_mapped@trace The above will allocate 12 megs with 4096 alignment and label it "trace". The second parameter will create a "boot_mapped" instance and use the memory reserved and labeled as "trace" as the memory for the ring buffer. That will create an instance called "boot_mapped": /sys/kernel/tracing/instances/boot_mapped Note, because the ring buffer is using a defined memory ranged, it will act just like a memory mapped ring buffer. It will not have a snapshot buffer, as it can't swap out the buffer. The snapshot files as well as any tracers that uses a snapshot will not be present in the boot_mapped instance. Also note that reserve_mem is not reliable in acquiring the same physical memory at each soft reboot. It is possible that KALSR could map the kernel at the previous boot memory location forcing the reserve_mem to return a different memory location. In this case, the previous ring buffer will be lost. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Ross Zwisler <zwisler@google.com> Cc: Vincent Donnefort <vdonnefort@google.com> Link: https://lore.kernel.org/20240815082811.669f7d8c@gandalf.local.home Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Steven Rostedt
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ee057c8c19 |
Linux 6.11-rc3
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAma5LLIeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGwUAIAJNwbkdgTIqEsyBU wsFcXGaFSsGJNbTulINJb34jl2gD2yr4pmnnrA0NePW1TUKOnx169hNMF8NWbr/A 0cHIREV9cyfnm/kzAcnHn7cWLSmsKd+x3TnCbCyodDZQDJzdLmw3LQG+4dTNJbw1 WtJO/EoaU4qaydW2VxtApw54sirq5bopZz7rpcRapA1afzbA2TUDbnnuEWjm9KCF 5K+RZTJZA/xI9gqEwJB+/p5FglW4n/T3xcDwaQp5uFsDskgV5e1AUrRLM+icTsem 0Egrs8Ca2Vp4oBM+r9miCSwjRu04jLKyuu20p7AN8zXLyN7WGAjduS15Dv+aHRZ/ 9XABZs0= =/T17 -----END PGP SIGNATURE----- Merge tag 'v6.11-rc3' into trace/ring-buffer/core The "reserve_mem" kernel command line parameter has been pulled into v6.11. Merge the latest -rc3 to allow the persistent ring buffer memory to be able to be mapped at the address specified by the "reserve_mem" command line parameter. Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
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Paul E. McKenney
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1dd01c0650 |
rcu: Summarize RCU CPU stall warnings during CSD-lock stalls
During CSD-lock stalls, the additional information output by RCU CPU stall warnings is usually redundant, flooding the console for not good reason. However, this has been the way things work for a few years. This commit therefore adds an rcutree.csd_lock_suppress_rcu_stall kernel boot parameter that causes RCU CPU stall warnings to be abbreviated to a single line when there is at least one CPU that has been stuck waiting for CSD lock for more than five seconds. To make this abbreviated message happen with decent probability: tools/testing/selftests/rcutorture/bin/kvm.sh --allcpus --duration 8 \ --configs "2*TREE01" --kconfig "CONFIG_CSD_LOCK_WAIT_DEBUG=y" \ --bootargs "csdlock_debug=1 rcutorture.stall_cpu=200 \ rcutorture.stall_cpu_holdoff=120 rcutorture.stall_cpu_irqsoff=1 \ rcutree.csd_lock_suppress_rcu_stall=1 \ rcupdate.rcu_exp_cpu_stall_timeout=5000" --trust-make [ paulmck: Apply kernel test robot feedback. ] Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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Hans Verkuil
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a043ea54bb |
Extensible parameters support for the rkisp1 driver
-----BEGIN PGP SIGNATURE----- iJgEABYKAEAWIQTAnvhxs4J7QT+XHKnMPy2AAyfeZAUCZry1ZyIcbGF1cmVudC5w aW5jaGFydEBpZGVhc29uYm9hcmQuY29tAAoJEMw/LYADJ95kkTQBAKZm34xgUyqh NjrFd4QEARsXbsH+6kZrh40prVzws97eAQDUM+OVykg6+mmuVOZITdX6+KRLxv5e bo+X5a+yYOW0BQ== =X2AX -----END PGP SIGNATURE----- Merge tag 'next-media-rkisp1-20240814' of git://git.kernel.org/pub/scm/linux/kernel/git/pinchartl/linux.git Extensible parameters support for the rkisp1 driver. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Paul E. McKenney
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0ff92d145a |
doc: Remove RCU Tasks Rude asynchronous APIs
The call_rcu_tasks_rude() and rcu_barrier_tasks_rude() APIs are no longer. This commit therefore removes them from the documentation. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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Paul E. McKenney
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58cb321054 |
rcutorture: Add a stall_cpu_repeat module parameter
This commit adds an stall_cpu_repeat kernel, which is also the rcutorture.stall_cpu_repeat boot parameter, to test repeated CPU stalls. Note that only the first stall will pay attention to the stall_cpu_irqsoff module parameter. For the second and subsequent stalls, interrupts will be enabled. This is helpful when testing the interaction between RCU CPU stall warnings and CSD-lock stall warnings. Reported-by: Rik van Riel <riel@surriel.com> Signed-off-by: "Paul E. McKenney" <paulmck@kernel.org> Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org> |
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Martin Tůma
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2b4e497c62 |
media: admin-guide: mgb4: Outputs DV timings documentation update
Properly document the function of the mgb4 output "frame_rate" sysfs parameter and update the default DV timings values according to the latest code changes. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Daniel Yang
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86cfa9a85f |
Documentation: dm-crypt.rst warning + error fix
While building kernel documention using make htmldocs command, I was
getting unexpected indentation error. Single description was given for
two module parameters with wrong indentation. So, I corrected the
indentation of both parameters and the description.
Signed-off-by: Shibu kumar <shibukumar.bit@gmail.com>
Signed-off-by: Daniel Yang <danielyangkang@gmail.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Fixes:
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Jacopo Mondi
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1fc379f624 |
media: uapi: videodev2: Add V4L2_META_FMT_RK_ISP1_EXT_PARAMS
The rkisp1 driver stores ISP configuration parameters in the fixed rkisp1_params_cfg structure. As the members of the structure are part of the userspace API, the structure layout is immutable and cannot be extended further. Introducing new parameters or modifying the existing ones would change the buffer layout and cause breakages in existing applications. The allow for future extensions to the ISP parameters, introduce a new extensible parameters format, with a new format 4CC. Document usage of the new format in the rkisp1 admin guide. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
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Hans Verkuil
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b669f37896 |
Documentation: media: vivid.rst: update TODO list
The vivid driver supports media controller support for quite a long
time now, so drop that from the list.
Since commit
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Steven Rostedt
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a7050ca724 |
pstore/ramoops: Fix typo as there is no "reserver"
For some reason my finger always hits the 'r' after typing "reserve".
Fix the typo in the Documentation example.
Fixes:
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Steve French
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1b5487aefb |
smb3: fix setting SecurityFlags when encryption is required
Setting encryption as required in security flags was broken. For example (to require all mounts to be encrypted by setting): "echo 0x400c5 > /proc/fs/cifs/SecurityFlags" Would return "Invalid argument" and log "Unsupported security flags" This patch fixes that (e.g. allowing overriding the default for SecurityFlags 0x00c5, including 0x40000 to require seal, ie SMB3.1.1 encryption) so now that works and forces encryption on subsequent mounts. Acked-by: Bharath SM <bharathsm@microsoft.com> Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com> |
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Shibu Kumar
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e9c7acd723 |
docs: dm-crypt: Removal of unexpected indentation error
Add the required indentation to fix this docs build error: Documentation/admin-guide/device-mapper/dm-crypt.rst:167: ERROR: Unexpected indentation. Also split the documentation for read and write into separate blocks. Signed-off-by: Shibu kumar shibukumar.bit@gmail.com [jc: rewrote changelog] Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240803183306.32425-1-shibukumar.bit@gmail.com |
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Sangmoon Kim
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946c57e61d |
Documentation: kernel-parameters: add workqueue.panic_on_stall
The workqueue.panic_on_stall kernel parameter was added in commit
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Tetsuo Handa
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b88f55389a |
profiling: remove profile=sleep support
The kernel sleep profile is no longer working due to a recursive locking bug introduced by commit |
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Waiman Long
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ab03125268 |
cgroup: Show # of subsystem CSSes in cgroup.stat
Cgroup subsystem state (CSS) is an abstraction in the cgroup layer to
help manage different structures in various cgroup subsystems by being
an embedded element inside a larger structure like cpuset or mem_cgroup.
The /proc/cgroups file shows the number of cgroups for each of the
subsystems. With cgroup v1, the number of CSSes is the same as the
number of cgroups. That is not the case anymore with cgroup v2. The
/proc/cgroups file cannot show the actual number of CSSes for the
subsystems that are bound to cgroup v2.
So if a v2 cgroup subsystem is leaking cgroups (usually memory cgroup),
we can't tell by looking at /proc/cgroups which cgroup subsystems may
be responsible.
As cgroup v2 had deprecated the use of /proc/cgroups, the hierarchical
cgroup.stat file is now being extended to show the number of live and
dying CSSes associated with all the non-inhibited cgroup subsystems that
have been bound to cgroup v2. The number includes CSSes in the current
cgroup as well as in all the descendants underneath it. This will help
us pinpoint which subsystems are responsible for the increasing number
of dying (nr_dying_descendants) cgroups.
The CSSes dying counts are stored in the cgroup structure itself
instead of inside the CSS as suggested by Johannes. This will allow
us to accurately track dying counts of cgroup subsystems that have
recently been disabled in a cgroup. It is now possible that a zero
subsystem number is coupled with a non-zero dying subsystem number.
The cgroup-v2.rst file is updated to discuss this new behavior.
With this patch applied, a sample output from root cgroup.stat file
was shown below.
nr_descendants 56
nr_subsys_cpuset 1
nr_subsys_cpu 43
nr_subsys_io 43
nr_subsys_memory 56
nr_subsys_perf_event 57
nr_subsys_hugetlb 1
nr_subsys_pids 56
nr_subsys_rdma 1
nr_subsys_misc 1
nr_dying_descendants 30
nr_dying_subsys_cpuset 0
nr_dying_subsys_cpu 0
nr_dying_subsys_io 0
nr_dying_subsys_memory 30
nr_dying_subsys_perf_event 0
nr_dying_subsys_hugetlb 0
nr_dying_subsys_pids 0
nr_dying_subsys_rdma 0
nr_dying_subsys_misc 0
Another sample output from system.slice/cgroup.stat was:
nr_descendants 34
nr_subsys_cpuset 0
nr_subsys_cpu 32
nr_subsys_io 32
nr_subsys_memory 34
nr_subsys_perf_event 35
nr_subsys_hugetlb 0
nr_subsys_pids 34
nr_subsys_rdma 0
nr_subsys_misc 0
nr_dying_descendants 30
nr_dying_subsys_cpuset 0
nr_dying_subsys_cpu 0
nr_dying_subsys_io 0
nr_dying_subsys_memory 30
nr_dying_subsys_perf_event 0
nr_dying_subsys_hugetlb 0
nr_dying_subsys_pids 0
nr_dying_subsys_rdma 0
nr_dying_subsys_misc 0
Note that 'debug' controller wasn't used to provide this information because
the controller is not recommended in productions kernels, also many of them
won't enable CONFIG_CGROUP_DEBUG by default.
Similar information could be retrieved with debuggers like drgn but that's
also not always available (e.g. lockdown) and the additional cost of runtime
tracking here is deemed marginal.
tj: Added Michal's paragraphs on why this is not added the debug controller
to the commit message.
Signed-off-by: Waiman Long <longman@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Reviewed-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Cc: Michal Koutný <mkoutny@suse.com>
Link: http://lkml.kernel.org/r/20240715150034.2583772-1-longman@redhat.com
Signed-off-by: Tejun Heo <tj@kernel.org>
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Benjamin Poirier
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1b2255db3c |
Documentation: Add detailed explanation for 'N' taint flag
Every taint flag has an entry in the "More detailed explanation" section except for the 'N' flag. That omission was probably just an oversight so add an entry for that flag. Signed-off-by: Benjamin Poirier <bpoirier@nvidia.com> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240717203521.514348-1-bpoirier@nvidia.com |
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Linus Torvalds
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65ad409e63 |
more s390 updates for 6.11 merge window
- Fix KMSAN build breakage caused by the conflict between s390 and mm-stable trees - Add KMSAN page markers for ptdump - Add runtime constant support - Fix __pa/__va for modules under non-GPL licenses by exporting necessary vm_layout struct with EXPORT_SYMBOL to prevent linkage problems - Fix an endless loop in the CF_DIAG event stop in the CPU Measurement Counter Facility code when the counter set size is zero - Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable its functionality by default - Support allocation of multiple MSI interrupts per device and improve logging of architecture-specific limitations - Add support for lowcore relocation as a debugging feature to catch all null ptr dereferences in the kernel address space, improving detection beyond the current implementation's limited write access protection - Clean up and rework CPU alternatives to allow for callbacks and early patching for the lowcore relocation -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEE3QHqV+H2a8xAv27vjYWKoQLXFBgFAmajrGUACgkQjYWKoQLX FBgZjwf/X8suh1Gm2qO47hdGURusOKmEa6GjYaihKzOi2I5yAWVXGsAYX7QtXI4X fxbKyuGJIvq7LOrIojN1JOCPGkDRztgMddqDJI7WljuRiw6dcd4L5tbaPgCKEv3Q AQcoq+Aeg1L5xnuNFPdQXl6+Fy2lTFqJCkUl+uW05pGAn2R212dYG3HB41TpwOtJ Sv2R5+yD9TQCKnHyuCQqaGf7d6SQTcVeBj8zrqVmcyduNK+BYYMOwlJ/UTRzeZEX 3DmQg/TdAkxXf0jZ+vrNILEfHlIvwDAhFjdoAXXL0TX4lx2cHLx9AiqNxYhUprsG 0gutc/nLq2FxhqofoJ0z9TCdb1Ef7w== =skva -----END PGP SIGNATURE----- Merge tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Vasily Gorbik: - Fix KMSAN build breakage caused by the conflict between s390 and mm-stable trees - Add KMSAN page markers for ptdump - Add runtime constant support - Fix __pa/__va for modules under non-GPL licenses by exporting necessary vm_layout struct with EXPORT_SYMBOL to prevent linkage problems - Fix an endless loop in the CF_DIAG event stop in the CPU Measurement Counter Facility code when the counter set size is zero - Remove the PROTECTED_VIRTUALIZATION_GUEST config option and enable its functionality by default - Support allocation of multiple MSI interrupts per device and improve logging of architecture-specific limitations - Add support for lowcore relocation as a debugging feature to catch all null ptr dereferences in the kernel address space, improving detection beyond the current implementation's limited write access protection - Clean up and rework CPU alternatives to allow for callbacks and early patching for the lowcore relocation * tag 's390-6.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits) s390: Remove protvirt and kvm config guards for uv code s390/boot: Add cmdline option to relocate lowcore s390/kdump: Make kdump ready for lowcore relocation s390/entry: Make system_call() ready for lowcore relocation s390/entry: Make ret_from_fork() ready for lowcore relocation s390/entry: Make __switch_to() ready for lowcore relocation s390/entry: Make restart_int_handler() ready for lowcore relocation s390/entry: Make mchk_int_handler() ready for lowcore relocation s390/entry: Make int handlers ready for lowcore relocation s390/entry: Make pgm_check_handler() ready for lowcore relocation s390/entry: Add base register to CHECK_VMAP_STACK/CHECK_STACK macro s390/entry: Add base register to SIEEXIT macro s390/entry: Add base register to MBEAR macro s390/entry: Make __sie64a() ready for lowcore relocation s390/head64: Make startup code ready for lowcore relocation s390: Add infrastructure to patch lowcore accesses s390/atomic_ops: Disable flag outputs constraint for GCC versions below 14.2.0 s390/entry: Move SIE indicator flag to thread info s390/nmi: Simplify ptregs setup s390/alternatives: Remove alternative facility list ... |
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|
Linus Torvalds
|
f646429524 |
parisc architecture fixes and updates for kernel v6.11-rc1:
- Add gettimeofday() and clock_gettime() vDSO functions
- Enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
with PCIe NVME card to function in parisc machines
- Allow users to reduce kernel unaligned runtime warnings
- minor code cleanups
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Merge tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The gettimeofday() and clock_gettime() syscalls are now available as
vDSO functions, and Dave added a patch which allows to use NVMe cards
in the PCI slots as fast and easy alternative to SCSI discs.
Summary:
- add gettimeofday() and clock_gettime() vDSO functions
- enable PCI_MSI_ARCH_FALLBACKS to allow PCI to PCIe bridge adaptor
with PCIe NVME card to function in parisc machines
- allow users to reduce kernel unaligned runtime warnings
- minor code cleanups"
* tag 'parisc-for-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
parisc: Use max() to calculate parisc_tlb_flush_threshold
parisc: Fix warning at drivers/pci/msi/msi.h:121
parisc: Add 64-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Add 32-bit gettimeofday() and clock_gettime() vDSO functions
parisc: Clean up unistd.h file
|
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Helge Deller
|
cbade82334 |
parisc: Add support for CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN
Allow users to disable kernel warnings for unaligned memory accesses from kernel via the /proc/sys/kernel/ignore-unaligned-usertrap procfs entry. That way users can disable those warnings in case they happen too often. Signed-off-by: Helge Deller <deller@gmx.de> |
||
|
Sven Schnelle
|
035248a784 |
s390/alternatives: Remove noaltinstr option
The current Kernel doesn't boot without alternative patching on z16 machines. To avoid such bugs in the future, remove the option disable alternative patching. Signed-off-by: Sven Schnelle <svens@linux.ibm.com> Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> |
||
|
Linus Torvalds
|
fbc90c042c |
- 875fa64577da ("mm/hugetlb_vmemmap: fix race with speculative PFN
walkers") is known to cause a performance regression (https://lore.kernel.org/all/3acefad9-96e5-4681-8014-827d6be71c7a@linux.ibm.com/T/#mfa809800a7862fb5bdf834c6f71a3a5113eb83ff). Yu has a fix which I'll send along later via the hotfixes branch. - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Is anyone reading this stuff? If so, email me! - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZp2C+QAKCRDdBJ7gKXxA joTkAQDvjqOoFStqk4GU3OXMYB7WCU/ZQMFG0iuu1EEwTVDZ4QEA8CnG7seek1R3 xEoo+vw0sWWeLV3qzsxnCA1BJ8cTJA8= =z0Lf -----END PGP SIGNATURE----- Merge tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - In the series "mm: Avoid possible overflows in dirty throttling" Jan Kara addresses a couple of issues in the writeback throttling code. These fixes are also targetted at -stable kernels. - Ryusuke Konishi's series "nilfs2: fix potential issues related to reserved inodes" does that. This should actually be in the mm-nonmm-stable tree, along with the many other nilfs2 patches. My bad. - More folio conversions from Kefeng Wang in the series "mm: convert to folio_alloc_mpol()" - Kemeng Shi has sent some cleanups to the writeback code in the series "Add helper functions to remove repeated code and improve readability of cgroup writeback" - Kairui Song has made the swap code a little smaller and a little faster in the series "mm/swap: clean up and optimize swap cache index". - In the series "mm/memory: cleanly support zeropage in vm_insert_page*(), vm_map_pages*() and vmf_insert_mixed()" David Hildenbrand has reworked the rather sketchy handling of the use of the zeropage in MAP_SHARED mappings. I don't see any runtime effects here - more a cleanup/understandability/maintainablity thing. - Dev Jain has improved selftests/mm/va_high_addr_switch.c's handling of higher addresses, for aarch64. The (poorly named) series is "Restructure va_high_addr_switch". - The core TLB handling code gets some cleanups and possible slight optimizations in Bang Li's series "Add update_mmu_tlb_range() to simplify code". - Jane Chu has improved the handling of our fake-an-unrecoverable-memory-error testing feature MADV_HWPOISON in the series "Enhance soft hwpoison handling and injection". - Jeff Johnson has sent a billion patches everywhere to add MODULE_DESCRIPTION() to everything. Some landed in this pull. - In the series "mm: cleanup MIGRATE_SYNC_NO_COPY mode", Kefeng Wang has simplified migration's use of hardware-offload memory copying. - Yosry Ahmed performs more folio API conversions in his series "mm: zswap: trivial folio conversions". - In the series "large folios swap-in: handle refault cases first", Chuanhua Han inches us forward in the handling of large pages in the swap code. This is a cleanup and optimization, working toward the end objective of full support of large folio swapin/out. - In the series "mm,swap: cleanup VMA based swap readahead window calculation", Huang Ying has contributed some cleanups and a possible fixlet to his VMA based swap readahead code. - In the series "add mTHP support for anonymous shmem" Baolin Wang has taught anonymous shmem mappings to use multisize THP. By default this is a no-op - users must opt in vis sysfs controls. Dramatic improvements in pagefault latency are realized. - David Hildenbrand has some cleanups to our remaining use of page_mapcount() in the series "fs/proc: move page_mapcount() to fs/proc/internal.h". - David also has some highmem accounting cleanups in the series "mm/highmem: don't track highmem pages manually". - Build-time fixes and cleanups from John Hubbard in the series "cleanups, fixes, and progress towards avoiding "make headers"". - Cleanups and consolidation of the core pagemap handling from Barry Song in the series "mm: introduce pmd|pte_needs_soft_dirty_wp helpers and utilize them". - Lance Yang's series "Reclaim lazyfree THP without splitting" has reduced the latency of the reclaim of pmd-mapped THPs under fairly common circumstances. A 10x speedup is seen in a microbenchmark. It does this by punting to aother CPU but I guess that's a win unless all CPUs are pegged. - hugetlb_cgroup cleanups from Xiu Jianfeng in the series "mm/hugetlb_cgroup: rework on cftypes". - Miaohe Lin's series "Some cleanups for memory-failure" does just that thing. - Someone other than SeongJae has developed a DAMON feature in Honggyu Kim's series "DAMON based tiered memory management for CXL memory". This adds DAMON features which may be used to help determine the efficiency of our placement of CXL/PCIe attached DRAM. - DAMON user API centralization and simplificatio work in SeongJae Park's series "mm/damon: introduce DAMON parameters online commit function". - In the series "mm: page_type, zsmalloc and page_mapcount_reset()" David Hildenbrand does some maintenance work on zsmalloc - partially modernizing its use of pageframe fields. - Kefeng Wang provides more folio conversions in the series "mm: remove page_maybe_dma_pinned() and page_mkclean()". - More cleanup from David Hildenbrand, this time in the series "mm/memory_hotplug: use PageOffline() instead of PageReserved() for !ZONE_DEVICE". It "enlightens memory hotplug more about PageOffline() pages" and permits the removal of some virtio-mem hacks. - Barry Song's series "mm: clarify folio_add_new_anon_rmap() and __folio_add_anon_rmap()" is a cleanup to the anon folio handling in preparation for mTHP (multisize THP) swapin. - Kefeng Wang's series "mm: improve clear and copy user folio" implements more folio conversions, this time in the area of large folio userspace copying. - The series "Docs/mm/damon/maintaier-profile: document a mailing tool and community meetup series" tells people how to get better involved with other DAMON developers. From SeongJae Park. - A large series ("kmsan: Enable on s390") from Ilya Leoshkevich does that. - David Hildenbrand sends along more cleanups, this time against the migration code. The series is "mm/migrate: move NUMA hinting fault folio isolation + checks under PTL". - Jan Kara has found quite a lot of strangenesses and minor errors in the readahead code. He addresses this in the series "mm: Fix various readahead quirks". - SeongJae Park's series "selftests/damon: test DAMOS tried regions and {min,max}_nr_regions" adds features and addresses errors in DAMON's self testing code. - Gavin Shan has found a userspace-triggerable WARN in the pagecache code. The series "mm/filemap: Limit page cache size to that supported by xarray" addresses this. The series is marked cc:stable. - Chengming Zhou's series "mm/ksm: cmp_and_merge_page() optimizations and cleanup" cleans up and slightly optimizes KSM. - Roman Gushchin has separated the memcg-v1 and memcg-v2 code - lots of code motion. The series (which also makes the memcg-v1 code Kconfigurable) are "mm: memcg: separate legacy cgroup v1 code and put under config option" and "mm: memcg: put cgroup v1-specific memcg data under CONFIG_MEMCG_V1" - Dan Schatzberg's series "Add swappiness argument to memory.reclaim" adds an additional feature to this cgroup-v2 control file. - The series "Userspace controls soft-offline pages" from Jiaqi Yan permits userspace to stop the kernel's automatic treatment of excessive correctable memory errors. In order to permit userspace to monitor and handle this situation. - Kefeng Wang's series "mm: migrate: support poison recover from migrate folio" teaches the kernel to appropriately handle migration from poisoned source folios rather than simply panicing. - SeongJae Park's series "Docs/damon: minor fixups and improvements" does those things. - In the series "mm/zsmalloc: change back to per-size_class lock" Chengming Zhou improves zsmalloc's scalability and memory utilization. - Vivek Kasireddy's series "mm/gup: Introduce memfd_pin_folios() for pinning memfd folios" makes the GUP code use FOLL_PIN rather than bare refcount increments. So these paes can first be moved aside if they reside in the movable zone or a CMA block. - Andrii Nakryiko has added a binary ioctl()-based API to /proc/pid/maps for much faster reading of vma information. The series is "query VMAs from /proc/<pid>/maps". - In the series "mm: introduce per-order mTHP split counters" Lance Yang improves the kernel's presentation of developer information related to multisize THP splitting. - Michael Ellerman has developed the series "Reimplement huge pages without hugepd on powerpc (8xx, e500, book3s/64)". This permits userspace to use all available huge page sizes. - In the series "revert unconditional slab and page allocator fault injection calls" Vlastimil Babka removes a performance-affecting and not very useful feature from slab fault injection. * tag 'mm-stable-2024-07-21-14-50' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (411 commits) mm/mglru: fix ineffective protection calculation mm/zswap: fix a white space issue mm/hugetlb: fix kernel NULL pointer dereference when migrating hugetlb folio mm/hugetlb: fix possible recursive locking detected warning mm/gup: clear the LRU flag of a page before adding to LRU batch mm/numa_balancing: teach mpol_to_str about the balancing mode mm: memcg1: convert charge move flags to unsigned long long alloc_tag: fix page_ext_get/page_ext_put sequence during page splitting lib: reuse page_ext_data() to obtain codetag_ref lib: add missing newline character in the warning message mm/mglru: fix overshooting shrinker memory mm/mglru: fix div-by-zero in vmpressure_calc_level() mm/kmemleak: replace strncpy() with strscpy() mm, page_alloc: put should_fail_alloc_page() back behing CONFIG_FAIL_PAGE_ALLOC mm, slab: put should_failslab() back behind CONFIG_SHOULD_FAILSLAB mm: ignore data-race in __swap_writepage hugetlbfs: ensure generic_hugetlb_get_unmapped_area() returns higher address than mmap_min_addr mm: shmem: rename mTHP shmem counters mm: swap_state: use folio_alloc_mpol() in __read_swap_cache_async() mm/migrate: putback split folios when numa hint migration fails ... |
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|
Linus Torvalds
|
2c9b351240 |
ARM:
* Initial infrastructure for shadow stage-2 MMUs, as part of nested virtualization enablement * Support for userspace changes to the guest CTR_EL0 value, enabling (in part) migration of VMs between heterogenous hardware * Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1 of the protocol * FPSIMD/SVE support for nested, including merged trap configuration and exception routing * New command-line parameter to control the WFx trap behavior under KVM * Introduce kCFI hardening in the EL2 hypervisor * Fixes + cleanups for handling presence/absence of FEAT_TCRX * Miscellaneous fixes + documentation updates LoongArch: * Add paravirt steal time support. * Add support for KVM_DIRTY_LOG_INITIALLY_SET. * Add perf kvm-stat support for loongarch. RISC-V: * Redirect AMO load/store access fault traps to guest * perf kvm stat support * Use guest files for IMSIC virtualization, when available ONE_REG support for the Zimop, Zcmop, Zca, Zcf, Zcd, Zcb and Zawrs ISA extensions is coming through the RISC-V tree. s390: * Assortment of tiny fixes which are not time critical x86: * Fixes for Xen emulation. * Add a global struct to consolidate tracking of host values, e.g. EFER * Add KVM_CAP_X86_APIC_BUS_CYCLES_NS to allow configuring the effective APIC bus frequency, because TDX. * Print the name of the APICv/AVIC inhibits in the relevant tracepoint. * Clean up KVM's handling of vendor specific emulation to consistently act on "compatible with Intel/AMD", versus checking for a specific vendor. * Drop MTRR virtualization, and instead always honor guest PAT on CPUs that support self-snoop. * Update to the newfangled Intel CPU FMS infrastructure. * Don't advertise IA32_PERF_GLOBAL_OVF_CTRL as an MSR-to-be-saved, as it reads '0' and writes from userspace are ignored. * Misc cleanups x86 - MMU: * Small cleanups, renames and refactoring extracted from the upcoming Intel TDX support. * Don't allocate kvm_mmu_page.shadowed_translation for shadow pages that can't hold leafs SPTEs. * Unconditionally drop mmu_lock when allocating TDP MMU page tables for eager page splitting, to avoid stalling vCPUs when splitting huge pages. * Bug the VM instead of simply warning if KVM tries to split a SPTE that is non-present or not-huge. KVM is guaranteed to end up in a broken state because the callers fully expect a valid SPTE, it's all but dangerous to let more MMU changes happen afterwards. x86 - AMD: * Make per-CPU save_area allocations NUMA-aware. * Force sev_es_host_save_area() to be inlined to avoid calling into an instrumentable function from noinstr code. * Base support for running SEV-SNP guests. API-wise, this includes a new KVM_X86_SNP_VM type, encrypting/measure the initial image into guest memory, and finalizing it before launching it. Internally, there are some gmem/mmu hooks needed to prepare gmem-allocated pages before mapping them into guest private memory ranges. This includes basic support for attestation guest requests, enough to say that KVM supports the GHCB 2.0 specification. There is no support yet for loading into the firmware those signing keys to be used for attestation requests, and therefore no need yet for the host to provide certificate data for those keys. To support fetching certificate data from userspace, a new KVM exit type will be needed to handle fetching the certificate from userspace. An attempt to define a new KVM_EXIT_COCO/KVM_EXIT_COCO_REQ_CERTS exit type to handle this was introduced in v1 of this patchset, but is still being discussed by community, so for now this patchset only implements a stub version of SNP Extended Guest Requests that does not provide certificate data. x86 - Intel: * Remove an unnecessary EPT TLB flush when enabling hardware. * Fix a series of bugs that cause KVM to fail to detect nested pending posted interrupts as valid wake eents for a vCPU executing HLT in L2 (with HLT-exiting disable by L1). * KVM: x86: Suppress MMIO that is triggered during task switch emulation Explicitly suppress userspace emulated MMIO exits that are triggered when emulating a task switch as KVM doesn't support userspace MMIO during complex (multi-step) emulation. Silently ignoring the exit request can result in the WARN_ON_ONCE(vcpu->mmio_needed) firing if KVM exits to userspace for some other reason prior to purging mmio_needed. See commit |
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Linus Torvalds
|
d2be38b9a5 |
- added support for Realtek RTL9302C
- added support for Mobileye EyeQ6H - added support for Mobileye EyeQ OLB system controller - improved r4k clocksource - added mode for emulating ieee754 NAN2008 - rework for BMIPS CBR address handling - fixes for Loongson 2K1000 - defconfig updates - cleanups and fixes -----BEGIN PGP SIGNATURE----- iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmabf5oaHHRzYm9nZW5k QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHAYOQ//dgWc6RDS5vWKt14goHoR m3Qt63oHuxfGJsPCHdAqD4bAjxMa1eaRzbfXZ/cMrCSHsUo6bth8dmqFCDMjjWMT ifcCOCwXOf32NUTdm4mNLrKVUvCNeWUN6It8XBBF9r7seogvJPDpDZlEWUzYwfDE 6e7MaaFIEMZN2Q5OAjb6PozTI0gQ3p3UAHVdvN4Z9jJxkYPzRqVostcFUL9M9iU6 7OwGypIdZVSzB+6J6k0yv4rqNDei92SmlLjBD1+GK6uLdJG0JXiWn/XEMxOLyRP9 kKyfpjCwOgAfbTnMoo1N2n1jkP1BqyAPHvGqF2HGpi5mFRW1i25WdcwvF/jImyes yQ/gLKt/y3sOqfssayDvK9acRkp0KQltpPfvWxBXM464+8+gKCdYPZ7+81AbXAiL Qx+bVVdE3HSoO9T06/b0Lpudue7eNU+jlaO8MLH778heT+5k+mlI/H0Ep7M5U7qO 5V9xWlvLpceTa/gJ1cc9bUI5MG/2x+imw7COUcnv+wsWBJ3pGX4Jhwwe2hUn7ixd 0lhrSrQi1ILkFd8gL2REoJ520RNUVfR8yDn7mNuYV1++zlGVb7EAt67v/J6Y1p8l 9aQP/587oZvLAN2IBlovSzqvc6tHZlK6hO9d+ktqJood5NOjOWEGfT0RCm0eqiFF Er6qaWxjROZO1kiGjzo7v+4= =/6JH -----END PGP SIGNATURE----- Merge tag 'mips_6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from Thomas Bogendoerfer: - add support for Realtek RTL9302C - add support for Mobileye EyeQ6H - add support for Mobileye EyeQ OLB system controller - improve r4k clocksource - add mode for emulating ieee754 NAN2008 - rework for BMIPS CBR address handling - fixes for Loongson 2K1000 - defconfig updates - cleanups and fixes * tag 'mips_6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (58 commits) MIPS: config: Add ip30_defconfig MIPS: config: lemote2f: Regenerate defconfig MIPS: config: generic: Add board-litex MIPS: config: Enable MSA and virtualization for MIPS64R6 MIPS: Fix fallback march for SB1 mips: dts: realtek: Add RTL9302C board mips: generic: add fdt fixup for Realtek reference board mips: select REALTEK_OTTO_TIMER for Realtek platforms dt-bindings: interrupt-controller: realtek,rtl-intc: Add rtl9300-intc dt-bindings: mips: realtek: Add rtl930x-soc compatible dt-bindings: vendor-prefixes: Add Cameo Communications mips: dts: realtek: add device_type property to cpu node mips: dts: realtek: use "serial" instead of "uart" in node name MIPS: Implement ieee754 NAN2008 emulation mode MIPS: lantiq: improve USB initialization MIPS: GIC: Generate redirect block accessors MIPS: CPS: Add a couple of multi-cluster utility functions MIPS: Octeron: remove source file executable bit MAINTAINERS: Mobileye: add OLB drivers and dt-bindings MIPS: mobileye: eyeq5: add OLB system-controller node ... |
||
|
Linus Torvalds
|
3f386cb8ee |
pci-v6.11-changes
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Merge tag 'pci-v6.11-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci
Pull pci updates from Bjorn Helgaas:
"Enumeration:
- Define PCIE_RESET_CONFIG_DEVICE_WAIT_MS for the generic 100ms
required after reset before config access (Kevin Xie)
- Define PCIE_T_RRS_READY_MS for the generic 100ms required after
reset before config access (probably should be unified with
PCIE_RESET_CONFIG_DEVICE_WAIT_MS) (Damien Le Moal)
Resource management:
- Rename find_resource() to find_resource_space() to be more
descriptive (Ilpo Järvinen)
- Export find_resource_space() for use by PCI core, which needs to
learn whether there is available space for a bridge window (Ilpo
Järvinen)
- Prevent double counting of resources so window size doesn't grow on
each remove/rescan cycle (Ilpo Järvinen)
- Relax bridge window sizing algorithm so a device doesn't break
simply because it was removed and rescanned (Ilpo Järvinen)
- Evaluate the ACPI PRESERVE_BOOT_CONFIG _DSM in
pci_register_host_bridge() (not acpi_pci_root_create()) so we can
unify it with similar DT functionality (Vidya Sagar)
- Extend use of DT "linux,pci-probe-only" property so it works
per-host bridge as well as globally (Vidya Sagar)
- Unify support for ACPI PRESERVE_BOOT_CONFIG _DSM and the DT
"linux,pci-probe-only" property in pci_preserve_config() (Vidya
Sagar)
Driver binding:
- Add devres infrastructure for managed request and map of partial
BAR resources (Philipp Stanner)
- Deprecate pcim_iomap_table() because uses like
"pcim_iomap_table()[0]" have no good way to return errors (Philipp
Stanner)
- Add an always-managed pcim_request_region() for use instead of
pci_request_region() and similar, which are sometimes managed
depending on whether pcim_enable_device() has been called
previously (Philipp Stanner)
- Reimplement pcim_set_mwi() so it doesn't need to keep store MWI
state (Philipp Stanner)
- Add pcim_intx() for use instead of pci_intx(), which is sometimes
managed depending on whether pcim_enable_device() has been called
previously (Philipp Stanner)
- Add managed pcim_iomap_range() to allow mapping of a partial BAR
(Philipp Stanner)
- Fix a devres mapping leak in drm/vboxvideo (Philipp Stanner)
Error handling:
- Add missing bridge locking in device reset path and add a warning
for other possible lock issues (Dan Williams)
- Fix use-after-free on concurrent DPC and hot-removal (Lukas Wunner)
Power management:
- Disable AER and DPC during suspend to avoid spurious wakeups if
they share an interrupt with PME (Kai-Heng Feng)
PCIe native device hotplug:
- Detect if a device was removed or replaced during system sleep so
we don't assume a new device is the one that used to be there
(Lukas Wunner)
Virtualization:
- Add an ACS quirk for Broadcom BCM5760X multi-function NIC; it
prevents transactions between functions even though it doesn't
advertise ACS, so the functions can be attached individually via
VFIO (Ajit Khaparde)
Peer-to-peer DMA:
- Add a "pci=config_acs=" kernel command-line parameter to relax
default ACS settings to enable additional peer-to-peer
configurations. Requires expert knowledge of topology and ACS
operation (Vidya Sagar)
Endpoint framework:
- Remove unused struct pci_epf_group.type_group (Christophe JAILLET)
- Fix error handling in vpci_scan_bus() and epf_ntb_epc_cleanup()
(Dan Carpenter)
- Make struct pci_epc_class constant (Greg Kroah-Hartman)
- Remove unused pci_endpoint_test_bar_{readl,writel} functions
(Jiapeng Chong)
- Rename "BME" to "Bus Master Enable" (Manivannan Sadhasivam)
- Rename struct pci_epc_event_ops.core_init() callback to epc_init()
(Manivannan Sadhasivam)
- Move DMA init to MHI .epc_init() callback for uniformity
(Manivannan Sadhasivam)
- Cancel EPF test delayed work when link goes down (Manivannan
Sadhasivam)
- Add struct pci_epc_event_ops.epc_deinit() callback for cleanup
needed on fundamental reset (Manivannan Sadhasivam)
- Add 64KB alignment to endpoint test to support Rockchip rk3588
(Niklas Cassel)
- Optimize endpoint test by using memcpy() instead of readl() (Niklas
Cassel)
Device tree bindings:
- Add generic "ats-supported" property to advertise that a PCIe Root
Complex supports ATS (Jean-Philippe Brucker)
Amazon Annapurna Labs PCIe controller driver:
- Validate IORESOURCE_BUS presence to avoid NULL pointer dereference
(Aleksandr Mishin)
Axis ARTPEC-6 PCIe controller driver:
- Rename .cpu_addr_fixup() parameter to reflect that it is a PCI
address, not a CPU address (Niklas Cassel)
Freescale i.MX6 PCIe controller driver:
- Convert to agnostic GPIO API (Andy Shevchenko)
Freescale Layerscape PCIe controller driver:
- Make struct mobiveil_rp_ops constant (Christophe JAILLET)
- Use new generic dw_pcie_ep_linkdown() to handle link-down events
(Manivannan Sadhasivam)
HiSilicon Kirin PCIe controller driver:
- Convert to agnostic GPIO API (Andy Shevchenko)
- Use _scoped() iterator for OF children to ensure refcounts are
decremented at loop exit (Javier Carrasco)
Intel VMD host bridge driver:
- Create sysfs "domain" symlink before downstream devices are exposed
to userspace by pci_bus_add_devices() (Jiwei Sun)
Loongson PCIe controller driver:
- Enable MSI when LS7A is used with new CPUs that have integrated
PCIe Root Complex, e.g., Loongson-3C6000, so downstream devices can
use MSI (Huacai Chen)
Microchip AXI PolarFlare PCIe controller driver:
- Move pcie-microchip-host.c to a new PLDA directory (Minda Chen)
- Factor PLDA generic items out to a common
plda,xpressrich3-axi-common.yaml binding (Minda Chen)
- Factor PLDA generic data structures and code out to shared
pcie-plda.h, pcie-plda-host.c (Minda Chen)
- Add PLDA generic interrupt handling with a .request_event_irq()
callback for vendor-specific events (Minda Chen)
- Add PLDA generic host init/deinit and map bus functions for use by
vendor-specific drivers (Minda Chen)
- Rework to use PLDA core (Minda Chen)
Microsoft Hyper-V host bridge driver:
- Return zero, not garbage, when reading PCI_INTERRUPT_PIN (Wei Liu)
NVIDIA Tegra194 PCIe controller driver:
- Remove unused struct tegra_pcie_soc (Dr. David Alan Gilbert)
- Set 64KB inbound ATU alignment restriction (Jon Hunter)
Qualcomm PCIe controller driver:
- Make the MHI reg region mandatory for X1E80100, since all PCIe
controllers have it (Abel Vesa)
- Prevent use of uninitialized data and possible error pointer
dereference (Dan Carpenter)
- Return error, not success, if dev_pm_opp_find_freq_floor() fails
(Dan Carpenter)
- Add Operating Performance Points (OPP) support to scale performance
state based on aggregate link bandwidth to improve SoC power
efficiency (Krishna chaitanya chundru)
- Vote for the CPU-PCIe ICC (interconnect) path to ensure it stays
active even if other drivers don't vote for it (Krishna chaitanya
chundru)
- Use devm_clk_bulk_get_all() to get all the clocks from DT to avoid
writing out all the clock names (Manivannan Sadhasivam)
- Add DT binding and driver support for the SA8775P SoC (Mrinmay
Sarkar)
- Add HDMA support for the SA8775P SoC (Mrinmay Sarkar)
- Override the SA8775P NO_SNOOP default to avoid possible memory
corruption (Mrinmay Sarkar)
- Make sure resources are disabled during PERST# assertion, even if
the link is already disabled (Manivannan Sadhasivam)
- Use new generic dw_pcie_ep_linkdown() to handle link-down events
(Manivannan Sadhasivam)
- Add DT and endpoint driver support for the SA8775P SoC (Mrinmay
Sarkar)
- Add Hyper DMA (HDMA) support for the SA8775P SoC and enable it in
the EPF MHI driver (Mrinmay Sarkar)
- Set PCIE_PARF_NO_SNOOP_OVERIDE to override the default NO_SNOOP
attribute on the SA8775P SoC (both Root Complex and Endpoint mode)
to avoid possible memory corruption (Mrinmay Sarkar)
Renesas R-Car PCIe controller driver:
- Demote WARN() to dev_warn_ratelimited() in rcar_pcie_wakeup() to
avoid unnecessary backtrace (Marek Vasut)
- Add DT and driver support for R-Car V4H (R8A779G0) host and
endpoint. This requires separate proprietary firmware (Yoshihiro
Shimoda)
Rockchip PCIe controller driver:
- Assert PERST# for 100ms after power is stable (Damien Le Moal)
- Wait PCIE_T_RRS_READY_MS (100ms) after reset before starting
configuration (Damien Le Moal)
- Use GPIOD_OUT_LOW flag while requesting ep_gpio to fix a firmware
crash on Qcom-based modems with Rockpro64 board (Manivannan
Sadhasivam)
Rockchip DesignWare PCIe controller driver:
- Factor common parts of rockchip-dw-pcie DT binding to be shared by
Root Complex and Endpoint mode (Niklas Cassel)
- Add missing INTx signals to common DT binding (Niklas Cassel)
- Add eDMA items to DT binding for Endpoint controller (Niklas
Cassel)
- Fix initial dw-rockchip PERST# GPIO value to prevent unnecessary
short assert/deassert that causes issues with some WLAN controllers
(Niklas Cassel)
- Refactor dw-rockchip and add support for Endpoint mode (Niklas
Cassel)
- Call pci_epc_init_notify() and drop dw_pcie_ep_init_notify()
wrapper (Niklas Cassel)
- Add error messages in .probe() error paths to improve user
experience (Uwe Kleine-König)
Samsung Exynos PCIe controller driver:
- Use bulk clock APIs to simplify clock setup (Shradha Todi)
StarFive PCIe controller driver:
- Add DT binding and driver support for the StarFive JH7110
PLDA-based PCIe controller (Minda Chen)
Synopsys DesignWare PCIe controller driver:
- Add generic support for sending PME_Turn_Off when system suspends
(Frank Li)
- Fix incorrect interpretation of iATU slot 0 after PERST#
assert/deassert (Frank Li)
- Use msleep() instead of usleep_range() while waiting for link
(Konrad Dybcio)
- Refactor dw_pcie_edma_find_chip() to enable adding support for
Hyper DMA (HDMA) (Manivannan Sadhasivam)
- Enable drivers to supply the eDMA channel count since some can't
auto detect this (Manivannan Sadhasivam)
- Call pci_epc_init_notify() and drop dw_pcie_ep_init_notify()
wrapper (Manivannan Sadhasivam)
- Pass the eDMA mapping format directly from drivers instead of
maintaining a capability for it (Manivannan Sadhasivam)
- Add generic dw_pcie_ep_linkdown() to notify EPF drivers about
link-down events and restore non-sticky DWC registers lost on link
down (Manivannan Sadhasivam)
- Add vendor-specific "apb" reg name, interrupt names, INTx names to
generic binding (Niklas Cassel)
- Enforce DWC restriction that 64-bit BARs must start with an
even-numbered BAR (Niklas Cassel)
- Consolidate args of dw_pcie_prog_outbound_atu() into a structure
(Yoshihiro Shimoda)
- Add support for endpoints to send Message TLPs, e.g., for INTx
emulation (Yoshihiro Shimoda)
TI DRA7xx PCIe controller driver:
- Rename .cpu_addr_fixup() parameter to reflect that it is a PCI
address, not a CPU address (Niklas Cassel)
TI Keystone PCIe controller driver:
- Validate IORESOURCE_BUS presence to avoid NULL pointer dereference
(Aleksandr Mishin)
- Work around AM65x/DRA80xM Errata #i2037 that corrupts TLPs and
causes processor hangs by limiting Max_Read_Request_Size (MRRS) and
Max_Payload_Size (MPS) (Kishon Vijay Abraham I)
- Leave BAR 0 disabled for AM654x to fix a regression caused by
|
||
|
Linus Torvalds
|
04d17331ca |
USB/Thunderbolt updates for 6.11-rc1
Here is the big set of USB and Thunderbolt changes for 6.11-rc1.
Nothing earth-shattering in here, just constant forward progress in
adding support for new hardware and better debugging functionalities for
thunderbolt devices and the subsystem. Included in here are:
- thunderbolt debugging update and driver additions
- xhci driver updates
- typec driver updates
- kselftest device driver changes (acked by the relevant maintainers,
depended on other changes in this tree.)
- cdns3 driver updates
- gadget driver updates
- MODULE_DESCRIPTION() additions
- dwc3 driver updates and fixes
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.11-rc1.
Nothing earth-shattering in here, just constant forward progress in
adding support for new hardware and better debugging functionalities
for thunderbolt devices and the subsystem. Included in here are:
- thunderbolt debugging update and driver additions
- xhci driver updates
- typec driver updates
- kselftest device driver changes (acked by the relevant maintainers,
depended on other changes in this tree.)
- cdns3 driver updates
- gadget driver updates
- MODULE_DESCRIPTION() additions
- dwc3 driver updates and fixes
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (112 commits)
kselftest: devices: Add test to detect device error logs
kselftest: Move ksft helper module to common directory
kselftest: devices: Move discoverable devices test to subdirectory
usb: gadget: f_uac2: fix non-newline-terminated function name
USB: uas: Implement the new shutdown callback
USB: core: add 'shutdown' callback to usb_driver
usb: typec: Drop explicit initialization of struct i2c_device_id::driver_data to 0
usb: dwc3: enable CCI support for AMD-xilinx DWC3 controller
usb: dwc2: add support for other Lantiq SoCs
usb: gadget: Use u16 types for 16-bit fields
usb: gadget: midi2: Fix incorrect default MIDI2 protocol setup
usb: dwc3: core: Check all ports when set phy suspend
usb: typec: tcpci: add support to set connector orientation
dt-bindings: usb: Convert fsl-usb to yaml
usb: typec: ucsi: reorder operations in ucsi_run_command()
usb: typec: ucsi: extract common code for command handling
usb: typec: ucsi: inline ucsi_read_message_in
usb: typec: ucsi: rework command execution functions
usb: typec: ucsi: split read operation
usb: typec: ucsi: simplify command sending API
...
|
||
|
Linus Torvalds
|
aba9753c06 |
TTY/Serial updates for 6.11-rc1
Here is a small set of tty and serial driver updates for 6.11-rc1. Not much happened this cycle, unlike the previous kernel release which had lots of "excitement" in this part of the kernel. Included in here are the following changes: - dt binding updates for new platforms - 8250 driver updates - various small serial driver fixes and updates - printk/console naming and matching attempt #2 (was reverted for 6.10-final, should be good to go this time around, acked by the relevant maintainers). All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZppbCQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ymV1ACeIY5kgipqY7w4d3/7PcpKMiftrisAn0hr6csj Gan+k3cuVGlasGkaQ5/B =35VK -----END PGP SIGNATURE----- Merge tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty / serial updates from Greg KH: "Here is a small set of tty and serial driver updates for 6.11-rc1. Not much happened this cycle, unlike the previous kernel release which had lots of "excitement" in this part of the kernel. Included in here are the following changes: - dt binding updates for new platforms - 8250 driver updates - various small serial driver fixes and updates - printk/console naming and matching attempt #2 (was reverted for 6.10-final, should be good to go this time around, acked by the relevant maintainers). All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (22 commits) Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports serial: core: Add serial_base_match_and_update_preferred_console() printk: Add match_devname_and_update_preferred_console() serial: sc16is7xx: hardware reset chip if reset-gpios is defined in DT dt-bindings: serial: sc16is7xx: add reset-gpios dt-bindings: serial: vt8500-uart: convert to json-schema serial: 8250_platform: Explicitly show we initialise ISA ports only once tty: add missing MODULE_DESCRIPTION() macros dt-bindings: serial: mediatek,uart: add MT7988 serial: sh-sci: Add support for RZ/V2H(P) SoC dt-bindings: serial: Add documentation for Renesas RZ/V2H(P) (R9A09G057) SCIF support dt-bindings: serial: renesas,scif: Make 'interrupt-names' property as required dt-bindings: serial: renesas,scif: Validate 'interrupts' and 'interrupt-names' dt-bindings: serial: renesas,scif: Move ref for serial.yaml at the end riscv: dts: starfive: jh7110: Add the core reset and jh7110 compatible for uarts serial: 8250_dw: Use reset array API to get resets dt-bindings: serial: snps-dw-apb-uart: Add one more reset signal for StarFive JH7110 SoC serial: 8250: Extract platform driver serial: 8250: Extract RSA bits serial: imx: stop casting struct uart_port to struct imx_port ... |
||
|
Linus Torvalds
|
661fb4e68c |
- Optimize processing of flush bios in the dm-linear and dm-stripe
targets
- Dm-io cleansups and refactoring
- Remove unused 'struct thunk' in dm-cache
- Handle minor device numbers > 255 in dm-init
- Dm-verity refactoring & enabling platform keyring
- Fix warning in dm-raid
- Improve dm-crypt performance - split bios to smaller pieces, so that
They could be processed concurrently
- Stop using blk_limits_io_{min,opt}
- Dm-vdo cleanup and refactoring
- Remove max_write_zeroes_granularity and max_secure_erase_granularity
- Dm-multipath cleanup & refactoring
- Add dm-crypt and dm-integrity support for non-power-of-2 sector size
- Fix reshape in dm-raid
- Make dm_block_validator const
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Merge tag 'for-6.11/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mikulas Patocka:
- Optimize processing of flush bios in the dm-linear and dm-stripe
targets
- Dm-io cleansups and refactoring
- Remove unused 'struct thunk' in dm-cache
- Handle minor device numbers > 255 in dm-init
- Dm-verity refactoring & enabling platform keyring
- Fix warning in dm-raid
- Improve dm-crypt performance - split bios to smaller pieces, so that
They could be processed concurrently
- Stop using blk_limits_io_{min,opt}
- Dm-vdo cleanup and refactoring
- Remove max_write_zeroes_granularity and max_secure_erase_granularity
- Dm-multipath cleanup & refactoring
- Add dm-crypt and dm-integrity support for non-power-of-2 sector size
- Fix reshape in dm-raid
- Make dm_block_validator const
* tag 'for-6.11/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (33 commits)
dm vdo: fix a minor formatting issue in vdo.rst
dm vdo int-map: fix kerneldoc formatting
dm vdo repair: add missing kerneldoc fields
dm: Constify struct dm_block_validator
dm-integrity: introduce the Inline mode
dm: introduce the target flag mempool_needs_integrity
dm raid: fix stripes adding reshape size issues
dm raid: move _get_reshape_sectors() as prerequisite to fixing reshape size issues
dm-crypt: support for per-sector NVMe metadata
dm mpath: don't call dm_get_device in multipath_message
dm: factor out helper function from dm_get_device
dm-verity: fix dm_is_verity_target() when dm-verity is builtin
dm: Remove max_secure_erase_granularity
dm: Remove max_write_zeroes_granularity
dm vdo indexer: use swap() instead of open coding it
dm vdo: remove unused struct 'uds_attribute'
dm: stop using blk_limits_io_{min,opt}
dm-crypt: limit the size of encryption requests
dm verity: add support for signature verification with platform keyring
dm-raid: Fix WARN_ON_ONCE check for sync_thread in raid_resume
...
|
||
|
Masatake YAMATO
|
7f1c4909a8 |
dm vdo: fix a minor formatting issue in vdo.rst
Signed-off-by: Masatake YAMATO <yamato@redhat.com> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> |
||
|
Linus Torvalds
|
cf05e93af4 |
Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given translation was
last updated.
- A couple of "best practices" suggestions (on Link: tags and off-list
discussions) that were not entirely at consensus level, but I concluded
they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters that have
not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such.
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Merge tag 'docs-6.11' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Nothing hugely exciting happening in the documentation tree this time
around, mostly more of the usual:
- More Spanish, Italian, and Chinese translations
- A new script, scripts/checktransupdate.py, can be used to see which
commits have touched an (English) document since a given
translation was last updated.
- A couple of "best practices" suggestions (on Link: tags and
off-list discussions) that were not entirely at consensus level,
but I concluded they were close enough to accept.
- Some nice cleanups removing documentation for kernel parameters
that have not been recognized for ... a long time.
...along with the usual updates, typo fixes, and such"
* tag 'docs-6.11' of git://git.lwn.net/linux: (57 commits)
Documentation: Document user_events ioctl code
docs/pinctrl: fix typo in mapping example
docs: maintainer: discourage taking conversations off-list
docs: driver-model: platform: update the definition of platform_driver
docs/sp_SP: Add translation for scheduler/sched-design-CFS.rst
writing_musb_glue_layer.rst: Fix broken URL
zh_CN/admin-guide: one typo fix
docs/zh_CN/virt: Update the translation of guest-halt-polling.rst
Documentation: add reference from dynamic debug to loglevel kernel params
Documentation: best practices for using Link trailers
Documentation: fix links to mailing list services
Documentation: exception-tables.rst: Fix the wrong steps referenced
docs/zh_CN: add process/researcher-guidelines Chinese translation
Documentation/tools/rv: fix document header
docs/sp_SP: Add translation of process/maintainer-kvm-x86.rst
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Add libps2 to the input section of driver-api
Docs/mm/index: move allocation profiling document to unsorted documents chapter
Docs/mm/index: rename 'Legacy Documentation' to 'Unsorted Documentation'
Docs/mm/index: Remove 'Memory Management Guide' chapter marker
...
|
||
|
Linus Torvalds
|
b2fc97c186 |
memblock: updates for 6.11-rc1
* reserve_mem command line parameter to allow creation of named memory reservation at boot time. The driving use-case is to improve the ability of pstore to retain ramoops data across reboots. * cleaunps and small improvements in memblock and mm_init * new tests cases in memblock test suite -----BEGIN PGP SIGNATURE----- iQFEBAABCgAuFiEEeOVYVaWZL5900a/pOQOGJssO/ZEFAmaXfoIQHHJwcHRAa2Vy bmVsLm9yZwAKCRA5A4Ymyw79kU5mCAC23vIrB8FRlORczMYj+V3VFss3OjKT92lS fHGwq2oxHW+rdDpHXFObHU0D3k8d2l5jyrENRAAyA02qR0L6Pv8Na6pGxQua1eic VIdw0PFQMsizD1AIj84Y6skkyyF/tvZHpmX0B12D5+Ur65DC/Z867Cm/lE33/fHv /1+QB0JlG7W+FzxVstYyebY5/DVkH+bC7/A57FE2oB4BRXjEd8v9tTHBS4kRSvrE zE2KFxeGajN749LHztIpIprPKehu8Gc3oLrYLNJO+uLFVCV8ey3OqVj0RXMG2wLl hmVYqhbZM/Uz59D/P8pULD49f1Thjv/5A/MvUZ3SxM6zpWlsincf =xrZd -----END PGP SIGNATURE----- Merge tag 'memblock-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock Pull memblock updates from Mike Rapoport: - 'reserve_mem' command line parameter to allow creation of named memory reservation at boot time. The driving use-case is to improve the ability of pstore to retain ramoops data across reboots. - cleanups and small improvements in memblock and mm_init - new tests cases in memblock test suite * tag 'memblock-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: memblock tests: fix implicit declaration of function 'numa_valid_node' memblock: Move late alloc warning down to phys alloc pstore/ramoops: Add ramoops.mem_name= command line option mm/memblock: Add "reserve_mem" to reserved named memory at boot up mm/mm_init.c: don't initialize page->lru again mm/mm_init.c: not always search next deferred_init_pfn from very beginning mm/mm_init.c: use deferred_init_mem_pfn_range_in_zone() to decide loop condition mm/mm_init.c: get the highest zone directly mm/mm_init.c: move nr_initialised reset down a bit mm/memblock: fix a typo in description of for_each_mem_region() mm/mm_init.c: use memblock_region_memory_base_pfn() to get startpfn mm/memblock: use PAGE_ALIGN_DOWN to get pgend in free_memmap mm/memblock: return true directly on finding overlap region memblock tests: add memblock_overlaps_region_checks mm/memblock: fix comment for memblock_isolate_range() memblock tests: add memblock_reserve_many_may_conflict_check() memblock tests: add memblock_reserve_all_locations_check() mm/memblock: remove empty dummy entry |
||
|
Linus Torvalds
|
b1bc554e00 |
media updates for v6.11-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmaXfCQACgkQCF8+vY7k 4RWuBg/+NRAVuzYW3AQPIaggajTGHfkk6WCTCVgQQZFCDqphS6YtgfXUJ8qO5YXk ZieGu+g2081BFehzcZxcaSo9pFWyqX1fjUU2sjFwRDSl9NRctsjvKE9J1DVKCsMW QU5yOYyBJmoVugj4YCH7Yga8OElZAWperxJidV4AmFkX93OwZDZl+wNKuSTmG/lX ju+Z6yzv0DN0WvgL8+LlZ2k5tpx+kAld07FFwQM54MPI9CBWyQjogGyro/1S6ymh WAbwbEMCvGSvGhi4issMMOK2mpmh2EAKCXBMWF5bXNOLuFWrU9TtCBr6AITKDvn7 btQNpa8GApO+GehEQtWOX5WgZp2ypwCrMUtiwftPOtF4Z8Tl7MJfn4u6wWCxj4cy 67HbOgWRZQRIzyUSF8vay6PeMrh8jYi+unWuOxGpnzilno1nV2hTzh4n1we15qIn 8pnNSbtgrJCvrIgtATYjP1FWgjBxwuNIpFGxo2ly+hgbu6COLZFfg0Oju3FBdOF1 ZxGkp1SaxcKeuFa6kbATj7y2dAjtre8drB9RfJY1C97Ta+C9ws4jBytVHbceA7u+ GJfAis2CEStLPpe3ND9n0ekeB/qSPcgGC2HLQR7L1u30Kx75T4I49HF0lcKev9gK oTRUPvZu/bI6NmSRwYYY7jo1rox5ffftJ2ZICeQaluV2dbOMUc8= =7nBb -----END PGP SIGNATURE----- Merge tag 'media/v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - New sensor drivers: gc05a2, gc08a3 and imx283 - New serializer/deserializer drivers: max96714 and max96717 - New JPEG encoder driver: e5010 - Support for Raspberry Pi PiSP Backend (BE) ISP driver - Old documentation for av7110 driver removed, as a new version was added as Documentation/userspace-api/media/dvb/legacy*.rst - atompisp: Linux firmwares are now available, so drop firmware-related task from TODO and update firmware logic - The imx258 driver has gained several improvements - wave5 driver has gained support for HEVC decoding - em28xx gained support for MyGica UTV3 - av7110 budget-patch driver removed - Lots of other cleanups, improvements and fixes * tag 'media/v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (301 commits) media: raspberrypi: Switch to remove_new media: uapi: pisp_be_config: Add extra config fields media: uapi: pisp_be_config: Re-sort pisp_be_tiles_config media: uapi: pisp_common: Capitalize all macros media: uapi: pisp_common: Add 32 bpp format test media: uapi: pisp_be_config: Drop BIT() from uAPI media: stm32: dcmipp: correct error handling in dcmipp_create_subdevs media: atomisp: Fix spelling mistakes in sh_css_sp.c media: atomisp: Fix spelling mistake in ia_css_debug.c media: atomisp: Fix spelling mistake in hmm_bo.c media: atomisp: Fix spelling mistake in ia_css_eed1_8.host.c media: atomisp: Fix spelling mistake in sh_css_internal.h media: atomisp: Fix spelling mistake "pipline" -> "pipeline" media: atomisp: Remove unused GPIO related defines and APIs media: atomisp: Replace COMPILATION_ERROR_IF() by static_assert() media: atomisp: Clean up unused macros from math_support.h media: atomisp: csi2-bridge: Add DMI quirk for OV5693 on Xiaomi Mipad2 media: atomisp: Update TODO media: atomisp: Prefix firmware paths with "intel/ipu/" media: atomisp: Remove firmware_name module parameter ... |
||
|
Linus Torvalds
|
a5cb6b2bbf |
platform-drivers-x86 for v6.11-1
Highlights: - amd/pmf: Report system state changes using existing input events - asus-wmi: Zenbook 2023 camera LED disable support and fix TUF laptop keyboard RGB LED sysfs interface - dell-pc: Fan modes / platform profile support - hp-wmi: Fix platform profile switching on Omen/Victus laptops - intel/ISST: Use only TPMI interface when TPMI and legacy interfaces are available - intel/pmc: LTR restore support to pair with LTR ignore - intel/tpmi: Performance Limit Reasons (PLR) and APIC <-> Punit CPU numbering mapping support - WMI: driver override support and docs improvements - lenovo-yoga-c630: Support for EC (platform/arm64) - platform/arm64: Fix build with COMPILE_TEST (broke after addition of C630) - tools: Intel Speed Select Turbo Ratio Limit fix - Miscellaneous cleanups / refactoring / improvements The following is an automated shortlog grouped by driver: amd/pmf: - Remove update system state document - Use existing input event codes to update system states - Use memdup_user() arm64: - add Lenovo Yoga C630 WOS EC driver - build drivers even on non-ARM64 platforms - EC_ACER_ASPIRE1 should depend on ARCH_QCOM - EC_LENOVO_YOGA_C630 should depend on ARCH_QCOM arm64: lenovo-yoga-c630: - select AUXILIARY_BUS asus-tf103c-dock: - Use 2-argument strscpy() asus-wmi: - fix TUF laptop RGB variant - support the disable camera LED on F10 of Zenbook 2023 dell-pc: - avoid double free and invalid unregistration - Implement platform_profile dell-smbios: - Add helper for checking supported class - Move request functions for reuse Docs/admin-guide: - Remove pmf leftover reference from the index doc: TPMI: - Add entry for Performance Limit Reasons dt-bindings: platform: - Add Lenovo Yoga C630 EC hp: hp-bioscfg: - Use 2-argument strscpy() hp-wmi: - Fix implementation of the platform_profile_omen_get function - Fix platform profile option switch bug on Omen and Victus laptops ideapad-laptop: - use cleanup.h intel: chtwc_int33fe: - Use 2-argument strscpy() intel/ifs: - Switch to new Intel CPU model defines intel_ips: - Switch to new Intel CPU model defines intel/pmc: - Add support to show ltr_ignore value - Add support to undo ltr_ignore - Convert index variables to be unsigned - Move pmc assignment closer to first usage - Remove unneeded min_t check - Simplify mutex usage with cleanup helpers - Switch to new Intel CPU model defines - Use DEFINE_SHOW_STORE_ATTRIBUTE macro - Use the Elvis operator - Use the return value of pmc_core_send_msg intel_scu_wdt: - Switch to new Intel CPU model defines intel_speed_select_if: - Switch to new Intel CPU model defines intel_telemetry: - Switch to new Intel CPU model defines intel/tpmi: - Add API to get debugfs root - Add new auxiliary driver for performance limits - Add support for performance limit reasons intel: - TPMI domain id and CPU mapping intel/tpmi/plr: - Add support for the plr mailbox - Fix output in plr_print_bits() intel_turbo_max_3: - Switch to new Intel CPU model defines intel-uncore-freq: - Get rid of magic min_max argument - Get rid of magic values - Get rid of uncore_read_freq driver API - Re-arrange bit masks - Rename the sysfs helper macro names - Switch to new Intel CPU model defines - Use generic helpers for current frequency - Use uncore_index with read_control_freq ISST: - Add model specific loading for common module - Avoid some SkyLake server models - Use only TPMI interface when present p2sb: - Switch to new Intel CPU model defines serial-multi-instantiate: - Use 2-argument strscpy() think-lmi: - Use 2-argument strscpy() thinkpad_acpi: - Use 2-argument strscpy() tools/power/x86/intel-speed-select: - Set TRL MSR in 100 MHz units - v1.20 release wmi: - Add bus ABI documentation - Add driver_override support x86/platform/atom: - Switch to new Intel CPU model defines Merges: - Merge branch 'pdx86/platform-drivers-x86-lenovo-c630' into review-ilpo - Merge branch 'pdx86/platform-drivers-x86-lenovo-c630' into review-ilpo - Merge branch 'pdx86/platform-drivers-x86-lenovo-c630' into review-ilpo - Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-ilpo -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZpZIdQAKCRBZrE9hU+XO MbIEAQCMVjDuOJSSuS2u7/iVb41Q3+kjP6X0CmSpf8dmt3rH0gD/Z9Qynw6ArRY4 PPHY25ur8kPtwtyxHfCMcar6ESpztwU= =L2LD -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Ilpo Järvinen: - amd/pmf: Report system state changes using existing input events - asus-wmi: Zenbook 2023 camera LED disable support and fix TUF laptop keyboard RGB LED sysfs interface - dell-pc: Fan modes / platform profile support - hp-wmi: Fix platform profile switching on Omen/Victus laptops - intel/ISST: Use only TPMI interface when TPMI and legacy interfaces are available - intel/pmc: LTR restore support to pair with LTR ignore - intel/tpmi: Performance Limit Reasons (PLR) and APIC <-> Punit CPU numbering mapping support - WMI: driver override support and docs improvements - lenovo-yoga-c630: Support for EC (platform/arm64) - platform/arm64: Fix build with COMPILE_TEST (broke after addition of C630) - tools: Intel Speed Select Turbo Ratio Limit fix - Miscellaneous cleanups / refactoring / improvements * tag 'platform-drivers-x86-v6.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (65 commits) platform/x86: asus-wmi: fix TUF laptop RGB variant platform/x86/intel/tpmi/plr: Fix output in plr_print_bits() Docs/admin-guide: Remove pmf leftover reference from the index platform/x86: ideapad-laptop: use cleanup.h platform/x86: hp-wmi: Fix implementation of the platform_profile_omen_get function platform: arm64: EC_LENOVO_YOGA_C630 should depend on ARCH_QCOM platform: arm64: EC_ACER_ASPIRE1 should depend on ARCH_QCOM platform/x86/amd/pmf: Remove update system state document platform/x86/amd/pmf: Use existing input event codes to update system states platform/x86: hp-wmi: Fix platform profile option switch bug on Omen and Victus laptops platform/x86:intel/pmc: Add support to undo ltr_ignore platform/x86:intel/pmc: Use the Elvis operator platform/x86:intel/pmc: Use DEFINE_SHOW_STORE_ATTRIBUTE macro platform/x86:intel/pmc: Remove unneeded min_t check platform/x86:intel/pmc: Add support to show ltr_ignore value platform/x86:intel/pmc: Move pmc assignment closer to first usage platform/x86:intel/pmc: Convert index variables to be unsigned platform/x86:intel/pmc: Simplify mutex usage with cleanup helpers platform/x86:intel/pmc: Use the return value of pmc_core_send_msg tools/power/x86/intel-speed-select: v1.20 release ... |
||
|
Linus Torvalds
|
4a996d90b9 |
Scheduler changes for v6.11:
- Update Daniel Bristot de Oliveira's entry in MAINTAINERS,
and credit him in CREDITS.
- Harmonize the lock-yielding behavior on dynamically selected
preemption models with static ones.
- Reorganize the code a bit: split out sched/syscalls.c to reduce
the size of sched/core.c
- Micro-optimize psi_group_change()
- Fix set_load_weight() for SCHED_IDLE tasks
- Misc cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-07-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Update Daniel Bristot de Oliveira's entry in MAINTAINERS,
and credit him in CREDITS
- Harmonize the lock-yielding behavior on dynamically selected
preemption models with static ones
- Reorganize the code a bit: split out sched/syscalls.c to reduce
the size of sched/core.c
- Micro-optimize psi_group_change()
- Fix set_load_weight() for SCHED_IDLE tasks
- Misc cleanups & fixes
* tag 'sched-core-2024-07-16' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Update MAINTAINERS and CREDITS
sched/fair: set_load_weight() must also call reweight_task() for SCHED_IDLE tasks
sched/psi: Optimise psi_group_change a bit
sched/core: Drop spinlocks on contention iff kernel is preemptible
sched/core: Move preempt_model_*() helpers from sched.h to preempt.h
sched/balance: Skip unnecessary updates to idle load balancer's flags
idle: Remove stale RCU comment
sched/headers: Move struct pre-declarations to the beginning of the header
sched/core: Clean up kernel/sched/sched.h a bit
sched/core: Simplify prefetch_curr_exec_start()
sched: Fix spelling in comments
sched/syscalls: Split out kernel/sched/syscalls.c from kernel/sched/core.c
|
||
|
Linus Torvalds
|
41906248d0 |
Power management updates for 6.11-rc1
- Add Loongson-3 CPUFreq driver support (Huacai Chen).
- Add support for the Arrow Lake and Lunar Lake platforms and
the out-of-band (OOB) mode on Emerald Rapids to the intel_pstate
cpufreq driver, make it support the highest performance change
interrupt and clean it up (Srinivas Pandruvada).
- Switch cpufreq to new Intel CPU model defines (Tony Luck).
- Simplify the cpufreq driver interface by switching the .exit() driver
callback to the void return data type (Lizhe, Viresh Kumar).
- Make cpufreq_boost_enabled() return bool (Dhruva Gole).
- Add fast CPPC support to the amd-pstate cpufreq driver, address
multiple assorted issues in it and clean it up (Perry Yuan, Mario
Limonciello, Dhananjay Ugwekar, Meng Li, Xiaojian Du).
- Add Allwinner H700 speed bin to the sun50i cpufreq driver (Ryan
Walklin).
- Fix memory leaks and of_node_put() usage in the sun50i and qcom-nvmem
cpufreq drivers (Javier Carrasco).
- Clean up the sti and dt-platdev cpufreq drivers (Jeff Johnson,
Raphael Gallais-Pou).
- Fix deferred probe handling in the TI cpufreq driver and wrong return
values of ti_opp_supply_probe(), and add OPP tables for the AM62Ax and
AM62Px SoCs to it (Bryan Brattlof, Primoz Fiser).
- Avoid overflow of target_freq in .fast_switch() in the SCMI cpufreq
driver (Jagadeesh Kona).
- Use dev_err_probe() in every error path in probe in the Mediatek
cpufreq driver (Nícolas Prado).
- Fix kernel-doc param for longhaul_setstate in the longhaul cpufreq
driver (Yang Li).
- Fix system resume handling in the CPPC cpufreq driver (Riwen Lu).
- Improve the teo cpuidle governor and clean up leftover comments from
the menu cpuidle governor (Christian Loehle).
- Clean up a comment typo in the teo cpuidle governor (Atul Kumar
Pant).
- Add missing MODULE_DESCRIPTION() macro to cpuidle haltpoll (Jeff
Johnson).
- Switch the intel_idle driver to new Intel CPU model defines (Tony
Luck).
- Switch the Intel RAPL driver new Intel CPU model defines (Tony Luck).
- Simplify if condition in the idle_inject driver (Thorsten Blum).
- Fix missing cleanup on error in _opp_attach_genpd() (Viresh Kumar).
- Introduce an OF helper function to inform if required-opps is used
and drop a redundant in-parameter to _set_opp_level() (Ulf Hansson).
- Update pm-graph to v5.12 which includes fixes and major code revamp
for python3.12 (Todd Brandt).
- Address several assorted issues in the cpupower utility (Roman
Storozhenko).
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Merge tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add a new cpufreq driver for Loongson-3, add support for new
features in the intel_pstate (Lunar Lake and Arrow Lake platforms, OOB
mode for Emerald Rapids, highest performance change interrupt),
amd-pstate (fast CPPC) and sun50i (Allwinner H700 speed bin) cpufreq
drivers, simplify the cpufreq driver interface, simplify the teo
cpuidle governor, adjust the pm-graph utility for a new version of
Python, address issues and clean up code.
Specifics:
- Add Loongson-3 CPUFreq driver support (Huacai Chen)
- Add support for the Arrow Lake and Lunar Lake platforms and the
out-of-band (OOB) mode on Emerald Rapids to the intel_pstate
cpufreq driver, make it support the highest performance change
interrupt and clean it up (Srinivas Pandruvada)
- Switch cpufreq to new Intel CPU model defines (Tony Luck)
- Simplify the cpufreq driver interface by switching the .exit()
driver callback to the void return data type (Lizhe, Viresh Kumar)
- Make cpufreq_boost_enabled() return bool (Dhruva Gole)
- Add fast CPPC support to the amd-pstate cpufreq driver, address
multiple assorted issues in it and clean it up (Perry Yuan, Mario
Limonciello, Dhananjay Ugwekar, Meng Li, Xiaojian Du)
- Add Allwinner H700 speed bin to the sun50i cpufreq driver (Ryan
Walklin)
- Fix memory leaks and of_node_put() usage in the sun50i and
qcom-nvmem cpufreq drivers (Javier Carrasco)
- Clean up the sti and dt-platdev cpufreq drivers (Jeff Johnson,
Raphael Gallais-Pou)
- Fix deferred probe handling in the TI cpufreq driver and wrong
return values of ti_opp_supply_probe(), and add OPP tables for the
AM62Ax and AM62Px SoCs to it (Bryan Brattlof, Primoz Fiser)
- Avoid overflow of target_freq in .fast_switch() in the SCMI cpufreq
driver (Jagadeesh Kona)
- Use dev_err_probe() in every error path in probe in the Mediatek
cpufreq driver (Nícolas Prado)
- Fix kernel-doc param for longhaul_setstate in the longhaul cpufreq
driver (Yang Li)
- Fix system resume handling in the CPPC cpufreq driver (Riwen Lu)
- Improve the teo cpuidle governor and clean up leftover comments
from the menu cpuidle governor (Christian Loehle)
- Clean up a comment typo in the teo cpuidle governor (Atul Kumar
Pant)
- Add missing MODULE_DESCRIPTION() macro to cpuidle haltpoll (Jeff
Johnson)
- Switch the intel_idle driver to new Intel CPU model defines (Tony
Luck)
- Switch the Intel RAPL driver new Intel CPU model defines (Tony
Luck)
- Simplify if condition in the idle_inject driver (Thorsten Blum)
- Fix missing cleanup on error in _opp_attach_genpd() (Viresh Kumar)
- Introduce an OF helper function to inform if required-opps is used
and drop a redundant in-parameter to _set_opp_level() (Ulf Hansson)
- Update pm-graph to v5.12 which includes fixes and major code revamp
for python3.12 (Todd Brandt)
- Address several assorted issues in the cpupower utility (Roman
Storozhenko)"
* tag 'pm-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (77 commits)
cpufreq: sti: fix build warning
cpufreq: mediatek: Use dev_err_probe in every error path in probe
cpufreq: Add Loongson-3 CPUFreq driver support
cpufreq: Make cpufreq_driver->exit() return void
cpufreq/amd-pstate: Fix the scaling_max_freq setting on shared memory CPPC systems
cpufreq/amd-pstate-ut: Convert nominal_freq to khz during comparisons
cpufreq: pcc: Remove empty exit() callback
cpufreq: loongson2: Remove empty exit() callback
cpufreq: nforce2: Remove empty exit() callback
cpupower: fix lib default installation path
cpufreq: docs: Add missing scaling_available_frequencies description
cpuidle: teo: Don't count non-existent intercepts
cpupower: Disable direct build of the 'bench' subproject
cpuidle: teo: Remove recent intercepts metric
Revert: "cpuidle: teo: Introduce util-awareness"
cpufreq: make cpufreq_boost_enabled() return bool
cpufreq: intel_pstate: Support highest performance change interrupt
x86/cpufeatures: Add HWP highest perf change feature flag
Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method
cpufreq: amd-pstate: Cap the CPPC.max_perf to nominal_perf if CPB is off
...
|
||
|
Linus Torvalds
|
f83e38fc9f |
xen: branch for v6.11-rc1
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCZpS2TQAKCRCAXGG7T9hj vjryAQDy08vSiCNYnO4K0AXO9KhCLsXMpbdevTE0yHdtSW/IwQD/eOmrntgBArA4 PfQanbzM3Rj+h6p1zsfvW98DgmFrfAQ= =tG6C -----END PGP SIGNATURE----- Merge tag 'for-linus-6.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen updates from Juergen Gross: - some trivial cleanups - a fix for the Xen timer - add boot time selectable debug capability to the Xen multicall handling - two fixes for the recently added Xen irqfd handling * tag 'for-linus-6.11-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: remove deprecated xen_nopvspin boot parameter x86/xen: eliminate some private header files x86/xen: make some functions static xen: make multicall debug boot time selectable xen/arm: Convert comma to semicolon xen: privcmd: Fix possible access to a freed kirqfd instance xen: privcmd: Switch from mutex to spinlock for irqfds xen: add missing MODULE_DESCRIPTION() macros x86/xen: Convert comma to semicolon x86/xen/time: Reduce Xen timer tick xen/manage: Constify struct shutdown_handler |
||
|
Linus Torvalds
|
e55037c879 |
EFI updates for v6.11
- Drop support for the 'fake' EFI memory map on x86
- Add an SMBIOS based tweak to the EFI stub instructing the firmware on
x86 Macbook Pros to keep both GPUs enabled
- Replace 0-sized array with flexible array in EFI memory attributes
table handling
- Drop redundant BSS clearing when booting via the native PE entrypoint
on x86
- Avoid returning EFI_SUCCESS when aborting on an out-of-memory
condition
- Cosmetic tweak for arm64 KASLR loading logic
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Merge tag 'efi-next-for-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI updates from Ard Biesheuvel:
"Note the removal of the EFI fake memory map support - this is believed
to be unused and no longer worth supporting. However, we could easily
bring it back if needed.
With recent developments regarding confidential VMs and unaccepted
memory, combined with kexec, creating a known inaccurate view of the
firmware's memory map and handing it to the OS is a feature we can
live without, hence the removal. Alternatively, I could imagine making
this feature mutually exclusive with those confidential VM related
features, but let's try simply removing it first.
Summary:
- Drop support for the 'fake' EFI memory map on x86
- Add an SMBIOS based tweak to the EFI stub instructing the firmware
on x86 Macbook Pros to keep both GPUs enabled
- Replace 0-sized array with flexible array in EFI memory attributes
table handling
- Drop redundant BSS clearing when booting via the native PE
entrypoint on x86
- Avoid returning EFI_SUCCESS when aborting on an out-of-memory
condition
- Cosmetic tweak for arm64 KASLR loading logic"
* tag 'efi-next-for-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efi: Replace efi_memory_attributes_table_t 0-sized array with flexible array
efi: Rename efi_early_memdesc_ptr() to efi_memdesc_ptr()
arm64/efistub: Clean up KASLR logic
x86/efistub: Drop redundant clearing of BSS
x86/efistub: Avoid returning EFI_SUCCESS on error
x86/efistub: Call Apple set_os protocol on dual GPU Intel Macs
x86/efistub: Enable SMBIOS protocol handling for x86
efistub/smbios: Simplify SMBIOS enumeration API
x86/efi: Drop support for fake EFI memory maps
|
||
|
Paolo Bonzini
|
1c5a0b55ab |
KVM/arm64 changes for 6.11
- Initial infrastructure for shadow stage-2 MMUs, as part of nested
virtualization enablement
- Support for userspace changes to the guest CTR_EL0 value, enabling
(in part) migration of VMs between heterogenous hardware
- Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1 of
the protocol
- FPSIMD/SVE support for nested, including merged trap configuration
and exception routing
- New command-line parameter to control the WFx trap behavior under KVM
- Introduce kCFI hardening in the EL2 hypervisor
- Fixes + cleanups for handling presence/absence of FEAT_TCRX
- Miscellaneous fixes + documentation updates
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Merge tag 'kvmarm-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 changes for 6.11
- Initial infrastructure for shadow stage-2 MMUs, as part of nested
virtualization enablement
- Support for userspace changes to the guest CTR_EL0 value, enabling
(in part) migration of VMs between heterogenous hardware
- Fixes + improvements to pKVM's FF-A proxy, adding support for v1.1 of
the protocol
- FPSIMD/SVE support for nested, including merged trap configuration
and exception routing
- New command-line parameter to control the WFx trap behavior under KVM
- Introduce kCFI hardening in the EL2 hypervisor
- Fixes + cleanups for handling presence/absence of FEAT_TCRX
- Miscellaneous fixes + documentation updates
|
||
|
Ilpo Järvinen
|
9d20c0535e
|
Docs/admin-guide: Remove pmf leftover reference from the index
pmf.rst was removed by the commit
|
||
|
Linus Torvalds
|
2439a5eaa7 |
- Add a spectre_bhi=vmexit mitigation option aimed at cloud
environments
- Remove duplicated Spectre cmdline option documentation
- Add separate macro definitions for syscall handlers which do not
return in order to address objtool warnings
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Merge tag 'x86_bugs_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu mitigation updates from Borislav Petkov:
- Add a spectre_bhi=vmexit mitigation option aimed at cloud
environments
- Remove duplicated Spectre cmdline option documentation
- Add separate macro definitions for syscall handlers which do not
return in order to address objtool warnings
* tag 'x86_bugs_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Add 'spectre_bhi=vmexit' cmdline option
x86/bugs: Remove duplicate Spectre cmdline option descriptions
x86/syscall: Mark exit[_group] syscall handlers __noreturn
|
||
|
Linus Torvalds
|
181a984b7d |
- Remove an unused function and the documentation of an already removed
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||
|
Linus Torvalds
|
b3c0eccb48 |
gpio updates for v6.11-rc1
GPIOLIB core:
- rework kfifo handling rework in the character device code
- improve the labeling of GPIOs requested as interrupts and show more info
on interrupt-only GPIOs in debugfs
- remove unused APIs
- unexport interfaces that are only used from the core GPIO code
- drop the return value from gpiochip_set_desc_names() as it cannot fail
- move a string array definition out of a header and into a specific
compilation unit
- convert the last user of gpiochip_get_desc() other than GPIO core to using
a safer alternative
- use array_index_nospec() where applicable
New drivers:
- add a "virtual GPIO consumer" module that allows requesting GPIOs from actual
hardware and driving tests of the in-kernel GPIO API from user-space over
debugfs
- add a GPIO-based "sloppy" logic analyzer module useful for "first glance"
debugging on remote boards
Driver improvements:
- add support for a new model to gpio-pca953x
- lock GPIOs as interrupts in gpio-sim when the lines are requested as irqs
via the simulator domain + some other minor improvements
- improve error reporting in gpio-syscon
- convert gpio-ath79 to using dynamic GPIO base and range
- use pcibios_err_to_errno() for converting PCIBIOS error codes to errno
vaues in gpio-amd8111 and gpio-rdc321x
- allow building gpio-brcmstb for the BCM2835 architecture
DT bindings:
- convert DT bindings for lsi,zevio, mpc8xxx, and atmel to DT schema
- document new properties for aspeed,gpio, fsl,qoriq-gpio and gpio-vf610
- document new compatibles for pca953x and fsl,qoriq-gpio
Documentation:
- document stricter behavior of the GPIO character device uAPI with regards to
reconfiguring requested line without direction set
- clarify the effect of the active-low flag on line values and edges
- remove documentation for the legacy GPIO API in order to stop tempting
people to use it
- document the preference for using pread() for reading edge events in the
sysfs API
Other:
- add an extended initializer to the interrupt simulator allowing to specify
a number of callbacks callers can use to be notified about irqs being
requested and released
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Merge tag 'gpio-updates-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"The majority of added lines are two new modules: the GPIO virtual
consumer module that improves our ability to add automated tests for
the kernel API and the "sloppy" logic analyzer module that uses the
GPIO API to implement a coarse-grained debugging tool for useful for
remote development.
Other than that we have the usual assortment of various driver
extensions, improvements to the core GPIO code, DT-bindings and other
documentation updates as well as an extension to the interrupt
simulator:
GPIOLIB core:
- rework kfifo handling rework in the character device code
- improve the labeling of GPIOs requested as interrupts and show more
info on interrupt-only GPIOs in debugfs
- remove unused APIs
- unexport interfaces that are only used from the core GPIO code
- drop the return value from gpiochip_set_desc_names() as it cannot
fail
- move a string array definition out of a header and into a specific
compilation unit
- convert the last user of gpiochip_get_desc() other than GPIO core
to using a safer alternative
- use array_index_nospec() where applicable
New drivers:
- add a "virtual GPIO consumer" module that allows requesting GPIOs
from actual hardware and driving tests of the in-kernel GPIO API
from user-space over debugfs
- add a GPIO-based "sloppy" logic analyzer module useful for "first
glance" debugging on remote boards
Driver improvements:
- add support for a new model to gpio-pca953x
- lock GPIOs as interrupts in gpio-sim when the lines are requested
as irqs via the simulator domain + some other minor improvements
- improve error reporting in gpio-syscon
- convert gpio-ath79 to using dynamic GPIO base and range
- use pcibios_err_to_errno() for converting PCIBIOS error codes to
errno vaues in gpio-amd8111 and gpio-rdc321x
- allow building gpio-brcmstb for the BCM2835 architecture
DT bindings:
- convert DT bindings for lsi,zevio, mpc8xxx, and atmel to DT schema
- document new properties for aspeed,gpio, fsl,qoriq-gpio and
gpio-vf610
- document new compatibles for pca953x and fsl,qoriq-gpio
Documentation:
- document stricter behavior of the GPIO character device uAPI with
regards to reconfiguring requested line without direction set
- clarify the effect of the active-low flag on line values and edges
- remove documentation for the legacy GPIO API in order to stop
tempting people to use it
- document the preference for using pread() for reading edge events
in the sysfs API
Other:
- add an extended initializer to the interrupt simulator allowing to
specify a number of callbacks callers can use to be notified about
irqs being requested and released"
* tag 'gpio-updates-for-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (41 commits)
gpio: mc33880: Convert comma to semicolon
gpio: virtuser: actually use the "trimmed" local variable
dt-bindings: gpio: convert Atmel GPIO to json-schema
gpio: virtuser: new virtual testing driver for the GPIO API
dt-bindings: gpio: vf610: Allow gpio-line-names to be set
gpio: sim: lock GPIOs as interrupts when they are requested
genirq/irq_sim: add an extended irq_sim initializer
dt-bindings: gpio: fsl,qoriq-gpio: Add compatible string fsl,ls1046a-gpio
gpiolib: unexport gpiochip_get_desc()
gpio: add sloppy logic analyzer using polling
Documentation: gpio: Reconfiguration with unset direction (uAPI v2)
Documentation: gpio: Reconfiguration with unset direction (uAPI v1)
dt-bindings: gpio: fsl,qoriq-gpio: add common property gpio-line-names
gpio: ath79: convert to dynamic GPIO base allocation
pinctrl: da9062: replace gpiochip_get_desc() with gpio_device_get_desc()
gpiolib: put gpio_suffixes in a single compilation unit
Documentation: gpio: Clarify effect of active low flag on line edges
Documentation: gpio: Clarify effect of active low flag on line values
gpiolib: Remove data-less gpiochip_add() function
gpio: sim: use devm_mutex_init()
...
|
||
|
Linus Torvalds
|
c89d780cc1 |
arm64 updates for 6.11:
* Virtual CPU hotplug support for arm64 ACPI systems
* cpufeature infrastructure cleanups and making the FEAT_ECBHB ID bits
visible to guests
* CPU errata: expand the speculative SSBS workaround to more CPUs
* arm64 ACPI:
- acpi=nospcr option to disable SPCR as default console for arm64
- Move some ACPI code (cpuidle, FFH) to drivers/acpi/arm64/
* GICv3, use compile-time PMR values: optimise the way regular IRQs are
masked/unmasked when GICv3 pseudo-NMIs are used, removing the need for
a static key in fast paths by using a priority value chosen
dynamically at boot time
* arm64 perf updates:
- Rework of the IMX PMU driver to enable support for I.MX95
- Enable support for tertiary match groups in the CMN PMU driver
- Initial refactoring of the CPU PMU code to prepare for the fixed
instruction counter introduced by Arm v9.4
- Add missing PMU driver MODULE_DESCRIPTION() strings
- Hook up DT compatibles for recent CPU PMUs
* arm64 kselftest updates:
- Kernel mode NEON fp-stress
- Cleanups, spelling mistakes
* arm64 Documentation update with a minor clarification on TBI
* Miscellaneous:
- Fix missing IPI statistics
- Implement raw_smp_processor_id() using thread_info rather than a
per-CPU variable (better code generation)
- Make MTE checking of in-kernel asynchronous tag faults conditional
on KASAN being enabled
- Minor cleanups, typos
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"The biggest part is the virtual CPU hotplug that touches ACPI,
irqchip. We also have some GICv3 optimisation for pseudo-NMIs that has
been queued via the arm64 tree. Otherwise the usual perf updates,
kselftest, various small cleanups.
Core:
- Virtual CPU hotplug support for arm64 ACPI systems
- cpufeature infrastructure cleanups and making the FEAT_ECBHB ID
bits visible to guests
- CPU errata: expand the speculative SSBS workaround to more CPUs
- GICv3, use compile-time PMR values: optimise the way regular IRQs
are masked/unmasked when GICv3 pseudo-NMIs are used, removing the
need for a static key in fast paths by using a priority value
chosen dynamically at boot time
ACPI:
- 'acpi=nospcr' option to disable SPCR as default console for arm64
- Move some ACPI code (cpuidle, FFH) to drivers/acpi/arm64/
Perf updates:
- Rework of the IMX PMU driver to enable support for I.MX95
- Enable support for tertiary match groups in the CMN PMU driver
- Initial refactoring of the CPU PMU code to prepare for the fixed
instruction counter introduced by Arm v9.4
- Add missing PMU driver MODULE_DESCRIPTION() strings
- Hook up DT compatibles for recent CPU PMUs
Kselftest updates:
- Kernel mode NEON fp-stress
- Cleanups, spelling mistakes
Miscellaneous:
- arm64 Documentation update with a minor clarification on TBI
- Fix missing IPI statistics
- Implement raw_smp_processor_id() using thread_info rather than a
per-CPU variable (better code generation)
- Make MTE checking of in-kernel asynchronous tag faults conditional
on KASAN being enabled
- Minor cleanups, typos"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (69 commits)
selftests: arm64: tags: remove the result script
selftests: arm64: tags_test: conform test to TAP output
perf: add missing MODULE_DESCRIPTION() macros
arm64: smp: Fix missing IPI statistics
irqchip/gic-v3: Fix 'broken_rdists' unused warning when !SMP and !ACPI
ACPI: Add acpi=nospcr to disable ACPI SPCR as default console on ARM64
Documentation: arm64: Update memory.rst for TBI
arm64/cpufeature: Replace custom macros with fields from ID_AA64PFR0_EL1
KVM: arm64: Replace custom macros with fields from ID_AA64PFR0_EL1
perf: arm_pmuv3: Include asm/arm_pmuv3.h from linux/perf/arm_pmuv3.h
perf: arm_v6/7_pmu: Drop non-DT probe support
perf/arm: Move 32-bit PMU drivers to drivers/perf/
perf: arm_pmuv3: Drop unnecessary IS_ENABLED(CONFIG_ARM64) check
perf: arm_pmuv3: Avoid assigning fixed cycle counter with threshold
arm64: Kconfig: Fix dependencies to enable ACPI_HOTPLUG_CPU
perf: imx_perf: add support for i.MX95 platform
perf: imx_perf: fix counter start and config sequence
perf: imx_perf: refactor driver for imx93
perf: imx_perf: let the driver manage the counter usage rather the user
perf: imx_perf: add macro definitions for parsing config attr
...
|
||
|
Linus Torvalds
|
895b9b1207 |
cgroup: Changes for v6.11
- Added Michal Koutný as a maintainer. - Counters in pids.events were behaving inconsistently. pids.events made properly hierarchical and pids.events.local added. - misc.peak and misc.events.local added. - cpuset remote partition creation and cpuset.cpus.exclusive handling improved. - Code cleanups, non-critical fixes, doc updates. - for-6.10-fixes is merged in to receive two non-critical fixes that didn't trigger pull. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZpSsdw4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGSEMAQDQ5VfcRz+rW20ez5IAgyN3EKIwSbW6pY6jojgj bJtJSQD/TzA8DoRxcCvTdHcZcwJ2e2zBVcuM8NkZHfSCNiPrrgs= =5f3I -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Added Michal Koutný as a maintainer - Counters in pids.events were behaving inconsistently. pids.events made properly hierarchical and pids.events.local added - misc.peak and misc.events.local added - cpuset remote partition creation and cpuset.cpus.exclusive handling improved - Code cleanups, non-critical fixes, doc updates - for-6.10-fixes is merged in to receive two non-critical fixes that didn't trigger pull * tag 'cgroup-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (23 commits) cgroup: Add Michal Koutný as a maintainer cgroup/misc: Introduce misc.events.local cgroup/rstat: add force idle show helper cgroup: Protect css->cgroup write under css_set_lock cgroup/misc: Introduce misc.peak cgroup_misc: add kernel-doc comments for enum misc_res_type cgroup/cpuset: Prevent UAF in proc_cpuset_show() selftest/cgroup: Update test_cpuset_prs.sh to match changes cgroup/cpuset: Make cpuset.cpus.exclusive independent of cpuset.cpus cgroup/cpuset: Delay setting of CS_CPU_EXCLUSIVE until valid partition selftest/cgroup: Fix test_cpuset_prs.sh problems reported by test robot cgroup/cpuset: Fix remote root partition creation problem cgroup: avoid the unnecessary list_add(dying_tasks) in cgroup_exit() cgroup/cpuset: Optimize isolated partition only generate_sched_domains() calls cgroup/cpuset: Reduce the lock protecting CS_SCHED_LOAD_BALANCE kernel/cgroup: cleanup cgroup_base_files when fail to add cgroup_psi_files selftests: cgroup: Add basic tests for pids controller selftests: cgroup: Lexicographic order in Makefile cgroup/pids: Add pids.events.local cgroup/pids: Make event counters hierarchical ... |
||
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Linus Torvalds
|
9855e87328 |
RCU pull request for v6.11
doc.2024.06.06a: Update Tasks RCU and Tasks Rude RCU description in Requirements.rst and clarify rcu_assign_pointer() and rcu_dereference() ordering properties. fixes.2024.07.04a: Add lockdep assertions for RCU readers, limit inline wakeups for callback-bypass synchronize_rcu(), add an rcutree.nohz_full_patience_delay to reduce nohz_full OS jitter, add Uladzislau Rezki as RCU maintainer, and fix a subtle callback-migration memory-ordering issue. mb.2024.06.28a: Remove a number of redundant memory barriers. nocb.2024.06.03a: Remove unnecessary bypass-list lock-contention mitigation, use parking API instead of open-coded ad-hoc equivalent, and upgrade obsolete comments. rcu-tasks.2024.06.06a: Revert avoidance of a deadlock that can no longer occur and properly synchronize Tasks Trace RCU checking of runqueues. rcutorture.2024.06.06a: Add tests for handling of double-call_rcu() bug, add missing MODULE_DESCRIPTION, and add a script that histograms the number of calls to RCU updaters. srcu.2024.06.18a: Fill out SRCU polled-grace-period API. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmaR7/QTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jGwAEACJKef2LryG6khoJdorWbvRf1V2k23H 19CxXexCE4UoGsgGST9z1/5rM8kBdNhdhQ0JB9CitW+zGlXpOM79/mO3gALKMj++ YBPw9B5EM622H2cKJGFzoHFSO4X9nM1CCMeuFCo6bVsbWfMtX3ENqsYl2IQy1JkB pGiKqcNXGWU0mdUcZKs/8ilfLG1NhaLwrkfinlsP9V1+8z8LxxDH5Qh27AT3rIvu W87OITTZoHlUaDVHYTautHTZoqM381xv9kNoQlS9lpH/gcFOPiO9DLj8NcLjkJ4y S/OrxOwfQ+BGKwnk8daFQFAc3Nr9KeVAQH7CbOW7guARhj3z97J0+wPm6nZGEE2s tDzg8zLT9LtbmUypJLurl29+wFE4fPNsnd69XDONbMFN1Ox2tJM3dd/rPCsHSUvz kEOK9gUreHOv7/Ou6UIHlYVlHY7HHuD7TAsrhaaWk7CEmlY31UKwXG+fMl1FAnSy F3PcBF/1M687RRFWVeMlug/+0/+ghtc+kZ1YyR79KZR6dI0C7ueQbCBGztCCtFDz RjrHcDifS0Y2GNQO9+zAyrJvttidRATdYDeFstk+8nnta3CnYzxCp4rn5hs3Ss3N AJVJm244jR3AcoL4V/tQwiQlYh9ZYN5tZ7qxFiASdtV50Uc8HoIrWXeP0Ar+GHiV 2z/f5fKF4+5clQ== =7a1C -----END PGP SIGNATURE----- Merge tag 'rcu.2024.07.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull RCU updates from Paul McKenney: - Update Tasks RCU and Tasks Rude RCU description in Requirements.rst and clarify rcu_assign_pointer() and rcu_dereference() ordering properties - Add lockdep assertions for RCU readers, limit inline wakeups for callback-bypass synchronize_rcu(), add an rcutree.nohz_full_patience_delay to reduce nohz_full OS jitter, add Uladzislau Rezki as RCU maintainer, and fix a subtle callback-migration memory-ordering issue - Remove a number of redundant memory barriers - Remove unnecessary bypass-list lock-contention mitigation, use parking API instead of open-coded ad-hoc equivalent, and upgrade obsolete comments - Revert avoidance of a deadlock that can no longer occur and properly synchronize Tasks Trace RCU checking of runqueues - Add tests for handling of double-call_rcu() bug, add missing MODULE_DESCRIPTION, and add a script that histograms the number of calls to RCU updaters - Fill out SRCU polled-grace-period API * tag 'rcu.2024.07.12a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (29 commits) rcu: Fix rcu_barrier() VS post CPUHP_TEARDOWN_CPU invocation rcu: Eliminate lockless accesses to rcu_sync->gp_count MAINTAINERS: Add Uladzislau Rezki as RCU maintainer rcu: Add rcutree.nohz_full_patience_delay to reduce nohz_full OS jitter rcu/exp: Remove redundant full memory barrier at the end of GP rcu: Remove full memory barrier on RCU stall printout rcu: Remove full memory barrier on boot time eqs sanity check rcu/exp: Remove superfluous full memory barrier upon first EQS snapshot rcu: Remove superfluous full memory barrier upon first EQS snapshot rcu: Remove full ordering on second EQS snapshot srcu: Fill out polled grace-period APIs srcu: Update cleanup_srcu_struct() comment srcu: Add NUM_ACTIVE_SRCU_POLL_OLDSTATE srcu: Disable interrupts directly in srcu_gp_end() rcu: Disable interrupts directly in rcu_gp_init() rcu/tree: Reduce wake up for synchronize_rcu() common case rcu/tasks: Fix stale task snaphot for Tasks Trace tools/rcu: Add rcu-updaters.sh script rcutorture: Add missing MODULE_DESCRIPTION() macros rcutorture: Fix rcu_torture_fwd_cb_cr() data race ... |
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Tejun Heo
|
9283ff5be1 | Merge branch 'for-6.10-fixes' into for-6.11 | ||
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Steve French
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d2346e2836 |
cifs: fix setting SecurityFlags to true
If you try to set /proc/fs/cifs/SecurityFlags to 1 it will set them to CIFSSEC_MUST_NTLMV2 which no longer is relevant (the less secure ones like lanman have been removed from cifs.ko) and is also missing some flags (like for signing and encryption) and can even cause mount to fail, so change this to set it to Kerberos in this case. Also change the description of the SecurityFlags to remove mention of flags which are no longer supported. Cc: stable@vger.kernel.org Reviewed-by: Shyam Prasad N <sprasad@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> |
||
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Ryan Roberts
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63d9866ab0 |
mm: shmem: rename mTHP shmem counters
The legacy PMD-sized THP counters at /proc/vmstat include thp_file_alloc,
thp_file_fallback and thp_file_fallback_charge, which rather confusingly
refer to shmem THP and do not include any other types of file pages. This
is inconsistent since in most other places in the kernel, THP counters are
explicitly separated for anon, shmem and file flavours. However, we are
stuck with it since it constitutes a user ABI.
Recently, commit
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||
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Ran Xiaokai
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4c8763e84a |
kpageflags: detect isolated KPF_THP folios
When folio is isolated, the PG_lru bit is cleared. So the PG_lru check in stable_page_flags() will miss this kind of isolated folios. Use folio_test_large_rmappable() instead to also include isolated folios. Since pagecache supports large folios and the introduction of mTHP, the semantics of KPF_THP have been expanded, now it indicates not only PMD-sized THP. Update related documentation to clearly state that KPF_THP indicates multiple order THPs. [ran.xiaokai@zte.com.cn: directly use is_zero_folio(), per David] Link: https://lkml.kernel.org/r/20240708062601.165215-1-ranxiaokai627@163.com Link: https://lkml.kernel.org/r/20240705104343.112680-1-ranxiaokai627@163.com Signed-off-by: Ran Xiaokai <ran.xiaokai@zte.com.cn> Acked-by: David Hildenbrand <david@redhat.com> Cc: Andrei Vagin <avagin@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Svetly Todorov <svetly.todorov@memverge.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ryan Roberts
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00f5810420 |
mm: fix khugepaged activation policy
Since the introduction of mTHP, the docuementation has stated that
khugepaged would be enabled when any mTHP size is enabled, and disabled
when all mTHP sizes are disabled. There are 2 problems with this; 1.
this is not what was implemented by the code and 2. this is not the
desirable behavior.
Desirable behavior is for khugepaged to be enabled when any PMD-sized THP
is enabled, anon or file. (Note that file THP is still controlled by the
top-level control so we must always consider that, as well as the PMD-size
mTHP control for anon). khugepaged only supports collapsing to PMD-sized
THP so there is no value in enabling it when PMD-sized THP is disabled.
So let's change the code and documentation to reflect this policy.
Further, per-size enabled control modification events were not previously
forwarded to khugepaged to give it an opportunity to start or stop.
Consequently the following was resulting in khugepaged eroneously not
being activated:
echo never > /sys/kernel/mm/transparent_hugepage/enabled
echo always > /sys/kernel/mm/transparent_hugepage/hugepages-2048kB/enabled
[ryan.roberts@arm.com: v3]
Link: https://lkml.kernel.org/r/20240705102849.2479686-1-ryan.roberts@arm.com
Link: https://lkml.kernel.org/r/20240705102849.2479686-1-ryan.roberts@arm.com
Link: https://lkml.kernel.org/r/20240704091051.2411934-1-ryan.roberts@arm.com
Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Fixes:
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||
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Lance Yang
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9b89e01899 |
mm: add docs for per-order mTHP split counters
This commit introduces documentation for mTHP split counters in transhuge.rst. [ioworker0@gmail.com: improve the doc as suggested by Ryan] Link: https://lkml.kernel.org/r/20240704012905.42971-3-ioworker0@gmail.com [ioworker0@gmail.com: tweak Documentation/admin-guide/mm/transhuge.rst] Link: https://lkml.kernel.org/r/20240707013659.1151-1-ioworker0@gmail.com Link: https://lkml.kernel.org/r/20240628130750.73097-3-ioworker0@gmail.com Signed-off-by: Mingzhe Yang <mingzhe.yang@ly.com> Signed-off-by: Lance Yang <ioworker0@gmail.com> Reviewed-by: Barry Song <baohua@kernel.org> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Bang Li <libang.li@antgroup.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Vidya Sagar
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47c8846a49 |
PCI: Extend ACS configurability
PCIe ACS settings control the level of isolation and the possible P2P paths between devices. With greater isolation the kernel will create smaller iommu_groups and with less isolation there is more HW that can achieve P2P transfers. From a virtualization perspective all devices in the same iommu_group must be assigned to the same VM as they lack security isolation. There is no way for the kernel to automatically know the correct ACS settings for any given system and workload. Existing command line options (e.g., disable_acs_redir) allow only for large scale change, disabling all isolation, but this is not sufficient for more complex cases. Add a kernel command-line option 'config_acs' to directly control all the ACS bits for specific devices, which allows the operator to setup the right level of isolation to achieve the desired P2P configuration. The definition is future proof; when new ACS bits are added to the spec the open syntax can be extended. ACS needs to be setup early in the kernel boot as the ACS settings affect how iommu_groups are formed. iommu_group formation is a one time event during initial device discovery, so changing ACS bits after kernel boot can result in an inaccurate view of the iommu_groups compared to the current isolation configuration. ACS applies to PCIe Downstream Ports and multi-function devices. The default ACS settings are strict and deny any direct traffic between two functions. This results in the smallest iommu_group the HW can support. Frequently these values result in slow or non-working P2PDMA. ACS offers a range of security choices controlling how traffic is allowed to go directly between two devices. Some popular choices: - Full prevention - Translated requests can be direct, with various options - Asymmetric direct traffic, A can reach B but not the reverse - All traffic can be direct Along with some other less common ones for special topologies. The intention is that this option would be used with expert knowledge of the HW capability and workload to achieve the desired configuration. Link: https://lore.kernel.org/r/20240625153150.159310-1-vidyas@nvidia.com Signed-off-by: Vidya Sagar <vidyas@nvidia.com> [bhelgaas: add example, tidy printk formats] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> |
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Xiu Jianfeng
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6a26f9c689 |
cgroup/misc: Introduce misc.events.local
Currently the event counting provided by misc.events is hierarchical, it's not practical if user is only concerned with events of a specified cgroup. Therefore, introduce misc.events.local collect events specific to the given cgroup. This is analogous to memory.events.local and pids.events.local. Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Jiaxun Yang
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59649de96f |
MIPS: Implement ieee754 NAN2008 emulation mode
Implement ieee754 NAN2008 emulation mode. When this mode is enabled, kernel will accept ELF file compiled for both NaN 2008 and NaN legacy, but if hardware does not have capability to match ELF's NaN mode, __own_fpu will fail for corresponding thread and fpuemu will then kick in. This mode trade performance for correctness, while maintaining support for both NaN mode regardless of hardware capability. It is useful for multilib installation that have both types of binary exist in system. Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> |
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Juergen Gross
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9fe6a8c5b2 |
x86/xen: remove deprecated xen_nopvspin boot parameter
The xen_nopvspin boot parameter is deprecated since 2019. nopvspin can be used instead. Remove the xen_nopvspin boot parameter and replace the xen_pvspin variable use cases with nopvspin. This requires to move the nopvspin variable out of the .initdata section, as it needs to be accessed for cpuhotplug, too. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Message-ID: <20240710110139.22300-1-jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
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Juergen Gross
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942d917cb9 |
xen: make multicall debug boot time selectable
Today Xen multicall debugging needs to be enabled via modifying a define in a source file for getting debug data of multicall errors encountered by users. Switch multicall debugging to depend on a boot parameter "xen_mc_debug" instead, enabling affected users to boot with the new parameter set in order to get better diagnostics. With debugging enabled print the following information in case at least one of the batched calls failed: - all calls of the batch with operation, result and caller - all parameters of each call - all parameters stored in the multicall data for each call Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Message-ID: <20240710092749.13595-1-jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> |
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Ingo Molnar
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011b1134b8 |
Merge branch 'sched/urgent' into sched/core, to pick up fixes and refresh the branch
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Shyam Sundar S K
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2fd66f7d3b
|
platform/x86/amd/pmf: Remove update system state document
This commit removes the "pmf.rst" document, which was associated with the PMF driver that enabled system state updates based on TA output actions. The driver now uses existing input events (KEY_SCREENLOCK, KEY_SLEEP, and KEY_SUSPEND) instead of defining new udev rules in the "/etc/udev/rules.d/" directory. Consequently, the pmf.rst document is no longer necessary. Therefore, the pmf.rst documentation is being removed. Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com> Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Link: https://lore.kernel.org/r/20240711052047.1531957-2-Shyam-sundar.S-k@amd.com Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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SeongJae Park
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752f18b9d9 |
Docs/admin-guide/mm/damon/start: add access pattern snapshot example
DAMON user-space tool (damo) provides access pattern snapshot feature, which is expected to be frequently used for real time access pattern analysis. The snapshot output is also showing what DAMON provides on its own, including the 'age' information. In contrast, the recorded access patterns, which is shown as an example usage on the quick start section, shows what users can make from what DAMON provided. It includes information that generated outside of DAMON and makes the 'age' concept bit unclear. Hence snapshot output is easier at understanding the raw realtime output of DAMON. Add the snapshot usage example on the quick start section. Link: https://lkml.kernel.org/r/20240701192706.51415-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Mikulas Patocka
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0d815e3400 |
dm-crypt: limit the size of encryption requests
There was a performance regression reported where dm-crypt would perform worse on new kernels than on old kernels. The reason is that the old kernels split the bios to NVMe request size (that is usually 65536 or 131072 bytes) and the new kernels pass the big bios through dm-crypt and split them underneath. If a big 1MiB bio is passed to dm-crypt, dm-crypt processes it on a single core without parallelization and this is what causes the performance degradation. This commit introduces new tunable variables /sys/module/dm_crypt/parameters/max_read_size and /sys/module/dm_crypt/parameters/max_write_size that specify the maximum bio size for dm-crypt. Bios larger than this value are split, so that they can be encrypted in parallel by multiple cores. If these variables are '0', a default 131072 is used. Splitting bios may cause performance regressions in other workloads - if this happens, the user should increase the value in max_read_size and max_write_size variables. max_read_size: 128k 2399MiB/s 256k 2368MiB/s 512k 1986MiB/s 1024 1790MiB/s max_write_size: 128k 1712MiB/s 256k 1651MiB/s 512k 1537MiB/s 1024k 1332MiB/s Note that if you run dm-crypt inside a virtual machine, you may need to do "echo numa >/sys/module/workqueue/parameters/default_affinity_scope" to improve performance. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Tested-by: Laurence Oberman <loberman@redhat.com> |
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Rafael J. Wysocki
|
9dabb5b48f | Merge back cpufreq material for 6.11. | ||
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Daniel Lublin
|
9784f29bf5 |
Documentation: add reference from dynamic debug to loglevel kernel params
This is useful information for somebody who has managed to dig into enabling debug output, but is wondering why there is no such output appearing on the console. Signed-off-by: Daniel Lublin <daniel@lublin.se> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/4633bdb82c1c7c014d79840887878624a55c59f8.1720533043.git.daniel@lublin.se |
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Bibo Mao
|
03779999ac |
LoongArch: KVM: Add PV steal time support in guest side
Per-cpu struct kvm_steal_time is added here, its size is 64 bytes and also defined as 64 bytes, so that the whole structure is in one physical page. When a VCPU is online, function pv_enable_steal_time() is called. This function will pass guest physical address of struct kvm_steal_time and tells hypervisor to enable steal time. When a vcpu is offline, physical address is set as 0 and tells hypervisor to disable steal time. Here is an output of vmstat on guest when there is workload on both host and guest. It shows steal time stat information. procs -----------memory---------- -----io---- -system-- ------cpu----- r b swpd free inact active bi bo in cs us sy id wa st 15 1 0 7583616 184112 72208 20 0 162 52 31 6 43 0 20 17 0 0 7583616 184704 72192 0 0 6318 6885 5 60 8 5 22 16 0 0 7583616 185392 72144 0 0 1766 1081 0 49 0 1 50 16 0 0 7583616 184816 72304 0 0 6300 6166 4 62 12 2 20 18 0 0 7583632 184480 72240 0 0 2814 1754 2 58 4 1 35 Signed-off-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
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Bartosz Golaszewski
|
91581c4b3f |
gpio: virtuser: new virtual testing driver for the GPIO API
The GPIO subsystem used to have a serious problem with undefined behavior and use-after-free bugs on hot-unplug of GPIO chips. This can be considered a corner-case by some as most GPIO controllers are enabled early in the boot process and live until the system goes down but most GPIO drivers do allow unbind over sysfs, many are loadable modules that can be (force) unloaded and there are also GPIO devices that can be dynamically detached, for instance CP2112 which is a USB GPIO expender. Bugs can be triggered both from user-space as well as by in-kernel users. We have the means of testing it from user-space via the character device but the issues manifest themselves differently in the kernel. This is a proposition of adding a new virtual driver - a configurable GPIO consumer that can be configured over configfs (similarly to gpio-sim) or described on the device-tree. This driver is aimed as a helper in spotting any regressions in hot-unplug handling in GPIOLIB. Link: https://lore.kernel.org/r/20240708142912.120570-1-brgl@bgdev.pl Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
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Jiaqi Yan
|
44195d1eba |
docs: mm: add enable_soft_offline sysctl
Add the documentation for soft offline behaviors / costs, and what the new enable_soft_offline sysctl is for. [jiaqiyan@google.com: fix kerneldoc warnings] Link: https://lkml.kernel.org/r/CACw3F52=GxTCDw-PqFh3-GDM-fo3GbhGdu0hedxYXOTT4TQSTg@mail.gmail.com [jiaqiyan@google.com: there are more blank lines needed] Link: https://lkml.kernel.org/r/CACw3F52_obAB742XeDRNun4BHBYtrxtbvp5NkUincXdaob0j1g@mail.gmail.com Link: https://lkml.kernel.org/r/20240626050818.2277273-5-jiaqiyan@google.com Signed-off-by: Jiaqi Yan <jiaqiyan@google.com> Acked-by: Oscar Salvador <osalvador@suse.de> Acked-by: Miaohe Lin <linmiaohe@huawei.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Frank van der Linden <fvdl@google.com> Cc: Jane Chu <jane.chu@oracle.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Lance Yang <ioworker0@gmail.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Dan Schatzberg
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68cd9050d8 |
mm: add swappiness= arg to memory.reclaim
Allow proactive reclaimers to submit an additional swappiness=<val> argument to memory.reclaim. This overrides the global or per-memcg swappiness setting for that reclaim attempt. For example: echo "2M swappiness=0" > /sys/fs/cgroup/memory.reclaim will perform reclaim on the rootcg with a swappiness setting of 0 (no swap) regardless of the vm.swappiness sysctl setting. Userspace proactive reclaimers use the memory.reclaim interface to trigger reclaim. The memory.reclaim interface does not allow for any way to effect the balance of file vs anon during proactive reclaim. The only approach is to adjust the vm.swappiness setting. However, there are a few reasons we look to control the balance of file vs anon during proactive reclaim, separately from reactive reclaim: * Swapout should be limited to manage SSD write endurance. In near-OOM situations we are fine with lots of swap-out to avoid OOMs. As these are typically rare events, they have relatively little impact on write endurance. However, proactive reclaim runs continuously and so its impact on SSD write endurance is more significant. Therefore it is desireable to control swap-out for proactive reclaim separately from reactive reclaim * Some userspace OOM killers like systemd-oomd[1] support OOM killing on swap exhaustion. This makes sense if the swap exhaustion is triggered due to reactive reclaim but less so if it is triggered due to proactive reclaim (e.g. one could see OOMs when free memory is ample but anon is just particularly cold). Therefore, it's desireable to have proactive reclaim reduce or stop swap-out before the threshold at which OOM killing occurs. In the case of Meta's Senpai proactive reclaimer, we adjust vm.swappiness before writes to memory.reclaim[2]. This has been in production for nearly two years and has addressed our needs to control proactive vs reactive reclaim behavior but is still not ideal for a number of reasons: * vm.swappiness is a global setting, adjusting it can race/interfere with other system administration that wishes to control vm.swappiness. In our case, we need to disable Senpai before adjusting vm.swappiness. * vm.swappiness is stateful - so a crash or restart of Senpai can leave a misconfigured setting. This requires some additional management to record the "desired" setting and ensure Senpai always adjusts to it. With this patch, we avoid these downsides of adjusting vm.swappiness globally. [1]https://www.freedesktop.org/software/systemd/man/latest/systemd-oomd.service.html [2]https://github.com/facebookincubator/oomd/blob/main/src/oomd/plugins/Senpai.cpp#L585-L598 Link: https://lkml.kernel.org/r/20240103164841.2800183-3-schatzberg.dan@gmail.com Signed-off-by: Dan Schatzberg <schatzberg.dan@gmail.com> Suggested-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Chris Li <chrisl@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeel.butt@linux.dev> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Yue Zhao <findns94@gmail.com> Cc: Zefan Li <lizefan.x@bytedance.com> Cc: Nhat Pham <nphamcs@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Paul E. McKenney
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68d124b099 |
rcu: Add rcutree.nohz_full_patience_delay to reduce nohz_full OS jitter
If a CPU is running either a userspace application or a guest OS in nohz_full mode, it is possible for a system call to occur just as an RCU grace period is starting. If that CPU also has the scheduling-clock tick enabled for any reason (such as a second runnable task), and if the system was booted with rcutree.use_softirq=0, then RCU can add insult to injury by awakening that CPU's rcuc kthread, resulting in yet another task and yet more OS jitter due to switching to that task, running it, and switching back. In addition, in the common case where that system call is not of excessively long duration, awakening the rcuc task is pointless. This pointlessness is due to the fact that the CPU will enter an extended quiescent state upon returning to the userspace application or guest OS. In this case, the rcuc kthread cannot do anything that the main RCU grace-period kthread cannot do on its behalf, at least if it is given a few additional milliseconds (for example, given the time duration specified by rcutree.jiffies_till_first_fqs, give or take scheduling delays). This commit therefore adds a rcutree.nohz_full_patience_delay kernel boot parameter that specifies the grace period age (in milliseconds, rounded to jiffies) before which RCU will refrain from awakening the rcuc kthread. Preliminary experimentation suggests a value of 1000, that is, one second. Increasing rcutree.nohz_full_patience_delay will increase grace-period latency and in turn increase memory footprint, so systems with constrained memory might choose a smaller value. Systems with less-aggressive OS-jitter requirements might choose the default value of zero, which keeps the traditional immediate-wakeup behavior, thus avoiding increases in grace-period latency. [ paulmck: Apply Leonardo Bras feedback. ] Link: https://lore.kernel.org/all/20240328171949.743211-1-leobras@redhat.com/ Reported-by: Leonardo Bras <leobras@redhat.com> Suggested-by: Leonardo Bras <leobras@redhat.com> Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Leonardo Bras <leobras@redhat.com> |
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Liu Wei
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f5a4af3c75 |
ACPI: Add acpi=nospcr to disable ACPI SPCR as default console on ARM64
For varying privacy and security reasons, sometimes we would like to completely silence the _serial_ console, and only enable it when needed. But there are many existing systems that depend on this _serial_ console, so add acpi=nospcr to disable console in ACPI SPCR table as default _serial_ console. Signed-off-by: Liu Wei <liuwei09@cestc.cn> Suggested-by: Prarit Bhargava <prarit@redhat.com> Suggested-by: Will Deacon <will@kernel.org> Suggested-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Hanjun Guo <guohanjun@huawei.com> Reviewed-by: Prarit Bhargava <prarit@redhat.com> Link: https://lore.kernel.org/r/20240625030504.58025-1-liuwei09@cestc.cn Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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Tony Lindgren
|
17199dfccd |
Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports
Document the console option for DEVNAME:0.0 style addressing for serial ports. Suggested-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20240703100615.118762-4-tony.lindgren@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Shubhang Kaushik OS
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55ccad6fc1 |
vmalloc: modify the alloc_vmap_area() error message for better diagnostics
'vmap allocation for size %lu failed: use vmalloc=<size> to increase size' The above warning is seen in the kernel functionality for allocation of the restricted virtual memory range till exhaustion. This message is misleading because 'vmalloc=' is supported on arm32, x86 platforms and is not a valid kernel parameter on a number of other platforms (in particular its not supported on arm64, alpha, loongarch, arc, csky, hexagon, microblaze, mips, nios2, openrisc, parisc, m64k, powerpc, riscv, sh, um, xtensa, s390, sparc). With the update, the output gets modified to include the function parameters along with the start and end of the virtual memory range allowed. The warning message after fix on kernel version 6.10.0-rc1+: vmalloc_node_range for size 33619968 failed: Address range restricted between 0xffff800082640000 - 0xffff800084650000 Backtrace with the misleading error message: vmap allocation for size 33619968 failed: use vmalloc=<size> to increase size insmod: vmalloc error: size 33554432, vm_struct allocation failed, mode:0xcc0(GFP_KERNEL), nodemask=(null),cpuset=/,mems_allowed=0 CPU: 46 PID: 1977 Comm: insmod Tainted: G E 6.10.0-rc1+ #79 Hardware name: INGRASYS Yushan Server iSystem TEMP-S000141176+10/Yushan Motherboard, BIOS 2.10.20230517 (SCP: xxx) yyyy/mm/dd Call trace: dump_backtrace+0xa0/0x128 show_stack+0x20/0x38 dump_stack_lvl+0x78/0x90 dump_stack+0x18/0x28 warn_alloc+0x12c/0x1b8 __vmalloc_node_range_noprof+0x28c/0x7e0 custom_init+0xb4/0xfff8 [test_driver] do_one_initcall+0x60/0x290 do_init_module+0x68/0x250 load_module+0x236c/0x2428 init_module_from_file+0x8c/0xd8 __arm64_sys_finit_module+0x1b4/0x388 invoke_syscall+0x78/0x108 el0_svc_common.constprop.0+0x48/0xf0 do_el0_svc+0x24/0x38 el0_svc+0x3c/0x130 el0t_64_sync_handler+0x100/0x130 el0t_64_sync+0x190/0x198 [Shubhang@os.amperecomputing.com: v5] Link: https://lkml.kernel.org/r/CH2PR01MB5894B0182EA0B28DF2EFB916F5C72@CH2PR01MB5894.prod.exchangelabs.com Link: https://lkml.kernel.org/r/MN2PR01MB59025CC02D1D29516527A693F5C62@MN2PR01MB5902.prod.exchangelabs.com Signed-off-by: Shubhang Kaushik <shubhang@os.amperecomputing.com> Reviewed-by: Christoph Lameter (Ampere) <cl@linux.com> Cc: Christoph Lameter <cl@linux.com> Cc: Guo Ren <guoren@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Xiongwei Song <xiongwei.song@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Honggyu Kim
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83d0d46a80 |
Docs/damon: document damos_migrate_{hot,cold}
This patch adds damon description for "migrate_hot" and "migrate_cold"
actions for both usage and design documents as long as a new
"target_nid" knob to set the migration target node.
[sj@kernel.org: trivial fixups for DAMOS_MIGRATE_{HOT,COLD} documentation]
Link: https://lkml.kernel.org/r/20240618213630.84846-2-sj@kernel.org
Link: https://lkml.kernel.org/r/20240614030010.751-8-honggyu.kim@sk.com
Signed-off-by: Honggyu Kim <honggyu.kim@sk.com>
Signed-off-by: SeongJae Park <sj@kernel.org>Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Gregory Price <gregory.price@memverge.com>
Cc: Hyeonggon Yoo <42.hyeyoo@gmail.com>
Cc: Hyeongtak Ji <hyeongtak.ji@sk.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Rakie Kim <rakie.kim@sk.com>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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David Hildenbrand
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478fd0d8ec |
Documentation/admin-guide/mm/pagemap.rst: drop "Using pagemap to do something useful"
That example was added in 2008. In 2015, we restricted access to the PFNs in the pagemap to CAP_SYS_ADMIN, making that approach quite less usable. It's 2024 now, and using that racy and low-lewel mechanism to calculate the USS should not be considered a good example anymore. /proc/$pid/smaps and /proc/$pid/smaps_rollup can do a much better job without any of that low-level handling. Let's just drop that example. Link: https://lkml.kernel.org/r/20240607122357.115423-7-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Oscar Salvador <osalvador@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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66f44583f9 |
mm: shmem: add mTHP counters for anonymous shmem
Add mTHP counters for anonymous shmem. [baolin.wang@linux.alibaba.com: update Documentation/admin-guide/mm/transhuge.rst] Link: https://lkml.kernel.org/r/d86e2e7f-4141-432b-b2ba-c6691f36ef0b@linux.alibaba.com Link: https://lkml.kernel.org/r/4fd9e467d49ae4a747e428bcd821c7d13125ae67.1718090413.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Lance Yang <ioworker0@gmail.com> Cc: Barry Song <v-songbaohua@oppo.com> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Pankaj Raghav <p.raghav@samsung.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
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4b98995530 |
mm: shmem: add multi-size THP sysfs interface for anonymous shmem
To support the use of mTHP with anonymous shmem, add a new sysfs interface 'shmem_enabled' in the '/sys/kernel/mm/transparent_hugepage/hugepages-kB/' directory for each mTHP to control whether shmem is enabled for that mTHP, with a value similar to the top level 'shmem_enabled', which can be set to: "always", "inherit (to inherit the top level setting)", "within_size", "advise", "never". An 'inherit' option is added to ensure compatibility with these global settings, and the options 'force' and 'deny' are dropped, which are rather testing artifacts from the old ages. By default, PMD-sized hugepages have enabled="inherit" and all other hugepage sizes have enabled="never" for '/sys/kernel/mm/transparent_hugepage/hugepages-xxkB/shmem_enabled'. In addition, if top level value is 'force', then only PMD-sized hugepages have enabled="inherit", otherwise configuration will be failed and vice versa. That means now we will avoid using non-PMD sized THP to override the global huge allocation. [baolin.wang@linux.alibaba.com: fix transhuge.rst indentation] Link: https://lkml.kernel.org/r/b189d815-998b-4dfd-ba89-218ff51313f8@linux.alibaba.com [akpm@linux-foundation.org: reflow transhuge.rst addition to 80 cols] [baolin.wang@linux.alibaba.com: move huge_shmem_orders_lock under CONFIG_SYSFS] Link: https://lkml.kernel.org/r/eb34da66-7f12-44f3-a39e-2bcc90c33354@linux.alibaba.com [akpm@linux-foundation.org: huge_memory.c needs mm_types.h] Link: https://lkml.kernel.org/r/ffddfa8b3cb4266ff963099ab78cfd7184c57ac7.1718090413.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <v-songbaohua@oppo.com> Cc: Daniel Gomez <da.gomez@samsung.com> Cc: David Hildenbrand <david@redhat.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Lance Yang <ioworker0@gmail.com> Cc: Pankaj Raghav <p.raghav@samsung.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Daniel Watson
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6b2fa426df |
docs/admin-guide/mm: correct typo 'quired' to 'queried'
Convert the word "quired" to the word "queried" which makes more sense in this context. Signed-off-by: Daniel Watson <ozzloy@each.do> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/878qymrjrg.fsf@trent-reznor |
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Xiu Jianfeng
|
1028f391d5 |
cgroup/misc: Introduce misc.peak
Introduce misc.peak to record the historical maximum usage of the resource, as in some scenarios the value of misc.max could be adjusted based on the peak usage of the resource. Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Raphael Gallais-Pou
|
29acea1a04 |
cpufreq: docs: Add missing scaling_available_frequencies description
Add a description of the scaling_available_frequencies attribute in sysfs to the documentation. Signed-off-by: Raphael Gallais-Pou <rgallaispou@gmail.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://patch.msgid.link/20240701171040.369030-1-rgallaispou@gmail.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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Ard Biesheuvel
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37aee82c21 |
x86/efi: Drop support for fake EFI memory maps
Between kexec and confidential VM support, handling the EFI memory maps correctly on x86 is already proving to be rather difficult (as opposed to other EFI architectures which manage to never modify the EFI memory map to begin with) EFI fake memory map support is essentially a development hack (for testing new support for the 'special purpose' and 'more reliable' EFI memory attributes) that leaked into production code. The regions marked in this manner are not actually recognized as such by the firmware itself or the EFI stub (and never have), and marking memory as 'more reliable' seems rather futile if the underlying memory is just ordinary RAM. Marking memory as 'special purpose' in this way is also dubious, but may be in use in production code nonetheless. However, the same should be achievable by using the memmap= command line option with the ! operator. EFI fake memmap support is not enabled by any of the major distros (Debian, Fedora, SUSE, Ubuntu) and does not exist on other architectures, so let's drop support for it. Acked-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
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Greg Kroah-Hartman
|
f7697db8b1 |
Merge 6.10-rc6 into usb-next
We need the USB fixes in here as well for some follow-on patches. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
|
3e334486ec |
TTY/Serial/Console fixes for 6.10-rc6
Here are a bunch of fixes/reverts for 6.10-rc6. Include in here are:
- revert the bunch of tty/serial/console changes that landed in -rc1
that didn't quite work properly yet. Everyone agreed to just revert
them for now and will work on making them better for a future
release instead of trying to quick fix the existing changes this
late in the release cycle
- 8250 driver port count bugfix
- Other tiny serial port bugfixes for reported issues
All of these have been in linux-next this week with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial / console fixes from Greg KH:
"Here are a bunch of fixes/reverts for 6.10-rc6. Include in here are:
- revert the bunch of tty/serial/console changes that landed in -rc1
that didn't quite work properly yet.
Everyone agreed to just revert them for now and will work on making
them better for a future release instead of trying to quick fix the
existing changes this late in the release cycle
- 8250 driver port count bugfix
- Other tiny serial port bugfixes for reported issues
All of these have been in linux-next this week with no reported
issues"
* tag 'tty-6.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "printk: Save console options for add_preferred_console_match()"
Revert "printk: Don't try to parse DEVNAME:0.0 console options"
Revert "printk: Flag register_console() if console is set on command line"
Revert "serial: core: Add support for DEVNAME:0.0 style naming for kernel console"
Revert "serial: core: Handle serial console options"
Revert "serial: 8250: Add preferred console in serial8250_isa_init_ports()"
Revert "Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports"
Revert "serial: 8250: Fix add preferred console for serial8250_isa_init_ports()"
Revert "serial: core: Fix ifdef for serial base console functions"
serial: bcm63xx-uart: fix tx after conversion to uart_port_tx_limited()
serial: core: introduce uart_port_tx_limited_flags()
Revert "serial: core: only stop transmit when HW fifo is empty"
serial: imx: set receiver level before starting uart
tty: mcf: MCF54418 has 10 UARTS
serial: 8250_omap: Implementation of Errata i2310
tty: serial: 8250: Fix port count mismatch with the device
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Nils Rothaug
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ceac017e12 |
media: em28xx: Add support for MyGica UTV3
The MyGica UTV3 Analog USB2.0 TV Box is a USB video capture card that has analog TV, composite video, and FM radio inputs, an IR remote, and provides audio only as Line Out, but not over USB. Mine is prepared for an FM tuner, but not equipped with one. Support for FM radio is therefore missing. The device contains: - Empia EM2860 USB bridge - Philips SAA7113 video decoder - NXP TDA9801T demodulator - Tena TNF931D-DFDR1 tuner - ST HCF4052 demux, switches input audio to Line Out Signed-off-by: Nils Rothaug <nils.rothaug@gmx.de> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Nils Rothaug
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32c1935280 |
media: tuner-simple: Add support for Tena TNF931D-DFDR1
Tuner ranges were determined by USB capturing the vendor driver of a MyGica UTV3 video capture card. Signed-off-by: Nils Rothaug <nils.rothaug@gmx.de> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Josh Poimboeuf
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42c141fbb6 |
x86/bugs: Add 'spectre_bhi=vmexit' cmdline option
In cloud environments it can be useful to *only* enable the vmexit
mitigation and leave syscalls vulnerable. Add that as an option.
This is similar to the old spectre_bhi=auto option which was removed
with the following commit:
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Josh Poimboeuf
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4586c93ebf |
x86/bugs: Remove duplicate Spectre cmdline option descriptions
Duplicating the documentation of all the Spectre kernel cmdline options in two separate files is unwieldy and error-prone. Instead just add a reference to kernel-parameters.txt from spectre.rst. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Daniel Sneddon <daniel.sneddon@linux.intel.com> Link: https://lore.kernel.org/r/450b5f4ffe891a8cc9736ec52b0c6f225bab3f4b.1719381528.git.jpoimboe@kernel.org |
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Dorcas Anono Litunya
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f5306b757c |
documentation: media: vivid: Update documentation on vivid loopback support
Modify section "Video and Sliced VBI Looping" in Documentation to explain the vivid loopback support for video across multiple vivid instances. Previous documentation is out-of-date as it was explaining looping in a single vivid instance only. Also, in "Some Future Improvements" the item "Add support to loop from a specific output to a specific input across vivid instances" can be dropped since that's now implemented. Signed-off-by: Dorcas Anono Litunya <anonolitunya@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Hans Verkuil
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4c4dacb052 |
media: vivid: loopback based on 'Connected To' controls
Instead of using hardwired video loopback limited to a single vivid instance, use the new 'Connected To' controls to only loopback if an HDMI or S-Video input is connected to another output, which can be in another vivid instance. Effectively this emulates connecting and disconnecting an HDMI/S-Video cable. The Loop Video control is dropped since it has now been replaced by the new 'Connected To' controls. The Display Present has also been dropped since it no longer fits. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Co-developed-by: Dorcas Anono Litunya <anonolitunya@gmail.com> Signed-off-by: Dorcas Anono Litunya <anonolitunya@gmail.com> |
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Dorcas Anono Litunya
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0bc9574a7a |
media: Documentation: vivid.rst: Remove documentation for Capture Overlay
Modifying documentation to remove 'Capture Overlay section' as
destructive capture overlay support was removed.
See commit
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Hans Verkuil
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3883822e17 |
media: Documentation: vivid.rst: add supports_requests
The module option supports_requests was not documented, add it. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Hans Verkuil
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50e2eba54d |
media: Documentation: vivid.rst: drop "Video, VBI and RDS Looping"
Drop the "Video, VBI and RDS Looping" section, instead moving the Video/VBI info to section "Video and Sliced VBI looping" and the RDS info to section "Radio & RDS Looping". Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Hans Verkuil
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2513996024 |
media: Documentation: vivid.rst: fix confusing section refs
The documentation contained several instances of "section X" references, which no longer map to whatever X was. Replace these by the section titles. Also fix a single confusing typo in the "Radio & RDS Looping" section: "are regular frequency intervals" -> "at regular frequency intervals" Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Rafael J. Wysocki
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f53b4bb83d |
Add support for amd-pstate core performance boost support which
allows controlling which CPU cores can operate above nominal frequencies for short periods of time. -----BEGIN PGP SIGNATURE----- iQJOBAABCgA4FiEECwtuSU6dXvs5GA2aLRkspiR3AnYFAmZ8fvEaHG1hcmlvLmxp bW9uY2llbGxvQGFtZC5jb20ACgkQLRkspiR3AnbmPQ/9FrmbFf8t0e7WQJ7wrlHz 8HmeHGLNLQbOWLrNPP2um+33i97hxJ+h8RHnPnr9wzdDl1R+u2oR1vu5DXCYgBBA d9rLJv1YSFnEu9VPklAHWMyHHb+F6OsUyk6yPl8R50j2E3HOb/TjwLxIfxC0C80p ox2ffArMfO5iKEAcVkpKQuh0prWDoxl4eQ8UI2DoKLMu1UyZRmH/jWL8l1qNGpwF 4nRwYl4xERF2qnMaszN+QZREirmXwzU5y1gylx25qKDpFwzotulkEyQDGVPfqBr2 kTz0mvc+i1mrJ2P5MG5gi1Mgsxd5dA1VPhYDk+4vgE+oPnJp3kdBtOKWfkmN+mgn PB6gFMWJFpLm/Kl4Lu8TS3m+aE0Euctcu/pVYEhxeP5bEJ82gbxgT9/kd2hfMtMi 6QbBTIpoJcLnUuMEaOXRYlpuAmaG3cp/gDI4UO8tid+BgoyGbOK8fkToL2s0mIFx JrH19ZBAEXSWcoMQVmY118H8Uy4J+1IsA4IlZweTV0ZQPQ/W8VQ2blfyvRo7dSGj JtGhkOYtXdtYKahqC06fyi5lfzy+huiLjQElBOFWTl5x+usntpeCuJrG2kZ/gAiS gxVsL1FX6J7cxN866ty3jdwNYwOt5/JwG/oq3buBCeKYobQB3qY9bK6V42siC+Qv bcmTcy0lrfzZoNW5fvo3JZE= =EZq/ -----END PGP SIGNATURE----- Merge tag 'amd-pstate-v6.11-2024-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux Merge more amd-pstate driver updates for 6.11 from Mario Limonciello: "Add support for amd-pstate core performance boost support which allows controlling which CPU cores can operate above nominal frequencies for short periods of time." * tag 'amd-pstate-v6.11-2024-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/superm1/linux: Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method cpufreq: amd-pstate: Cap the CPPC.max_perf to nominal_perf if CPB is off cpufreq: amd-pstate: initialize core precision boost state cpufreq: acpi: move MSR_K7_HWCR_CPB_DIS_BIT into msr-index.h |
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Rafael J. Wysocki
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b11ec63abe | Merge back cpufreq material for v6.11. | ||
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Thomas Huth
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661404644d |
Documentation: Remove IA-64 from kernel-parameters
IA-64 has been removed from the tree, so we should also remove the corresponding kernel-parameters documentation now. Signed-off-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240627162458.387700-1-thuth@redhat.com |
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Jacopo Mondi
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5b683b2030 |
media: admin-guide: Document the Raspberry Pi PiSP BE
Add documentation for the PiSP Back End memory-to-memory ISP. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Diederik de Haas
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ddb77059b2 |
docs: verify/bisect: Fix rendered version URL
When rendering the documentation, the 'html' file extension replaces the 'rst' file extension, not add it. So remove the 'rst' part of the URL. Signed-off-by: Diederik de Haas <didi.debian@cknow.org> Reviewed-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240620081355.11549-1-didi.debian@cknow.org |
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Perry Yuan
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6d588891a9 |
Documentation: cpufreq: amd-pstate: update doc for Per CPU boost control method
Updates the documentation in `amd-pstate.rst` to include information about the per CPU boost control feature. Users can now enable or disable the Core Performance Boost (CPB) feature on individual CPUs using the `boost` sysfs attribute. Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Signed-off-by: Perry Yuan <perry.yuan@amd.com> Co-developed-by: Mario Limonciello <mario.limonciello@amd.com> Link: https://lore.kernel.org/r/20240626042733.3747-5-mario.limonciello@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Greg Kroah-Hartman
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12b7210ea8 |
Revert "Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports"
This reverts commit
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Samuel Wein
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9123419c3b |
media: Documentation: ipu6: Fix examples in ipu6-isys admin-guide
Fix flags in X1 Yoga example. MEDIA_LNK_FL_DYNAMIC (0x4 in the link flag) was removed in V4 Intel IPU6 and IPU6 input system drivers. Added -V flag to media-ctl commands for X1 Yoga, lower-case v only makes it verbose upper-case V sets the format. Signed-off-by: Samuel Wein <sam@samwein.com> [Sakari Ailus: Align subject line, rewrap commit message.] Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Perry Yuan
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1d53f30b3a |
Documentation: PM: amd-pstate: add guided mode to the Operation mode
the guided mode is also supported, so the operation mode should include that mode as well. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Perry Yuan <perry.yuan@amd.com> Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com> Link: https://lore.kernel.org/r/a61d825ef71f6aacc8f1624fe9fb982b8446b5a7.1718811234.git.perry.yuan@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> |
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Waiman Long
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737bb142a0 |
cgroup/cpuset: Make cpuset.cpus.exclusive independent of cpuset.cpus
The "cpuset.cpus.exclusive.effective" value is currently limited to a subset of its "cpuset.cpus". This makes the exclusive CPUs distribution hierarchy subsumed within the larger "cpuset.cpus" hierarchy. We have to decide on what CPUs are used locally and what CPUs can be passed down as exclusive CPUs down the hierarchy and combine them into "cpuset.cpus". The advantage of the current scheme is to have only one hierarchy to worry about. However, it make it harder to use as all the "cpuset.cpus" values have to be properly set along the way down to the designated remote partition root. It also makes it more cumbersome to find out what CPUs can be used locally. Make creation of remote partition simpler by breaking the dependency of "cpuset.cpus.exclusive" on "cpuset.cpus" and make them independent entities. Now we have two separate hierarchies - one for setting "cpuset.cpus.effective" and the other one for setting "cpuset.cpus.exclusive.effective". We may not need to set "cpuset.cpus" when we activate a partition root anymore. Also update Documentation/admin-guide/cgroup-v2.rst and cpuset.c comment to document this change. Suggested-by: Petr Malat <oss@malat.biz> Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Waiman Long
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fe8cd2736e |
cgroup/cpuset: Delay setting of CS_CPU_EXCLUSIVE until valid partition
The CS_CPU_EXCLUSIVE flag is currently set whenever cpuset.cpus.exclusive is set to make sure that the exclusivity test will be run to ensure its exclusiveness. At the same time, this flag can be changed whenever the partition root state is changed. For example, the CS_CPU_EXCLUSIVE flag will be reset whenever a partition root becomes invalid. This makes using CS_CPU_EXCLUSIVE to ensure exclusiveness a bit fragile. The current scheme also makes setting up a cpuset.cpus.exclusive hierarchy to enable remote partition harder as cpuset.cpus.exclusive cannot overlap with any cpuset.cpus of sibling cpusets if their cpuset.cpus.exclusive aren't set. Solve these issues by deferring the setting of CS_CPU_EXCLUSIVE flag until the cpuset become a valid partition root while adding new checks in validate_change() to ensure that cpuset.cpus.exclusive of sibling cpusets cannot overlap. An additional check is also added to validate_change() to make sure that cpuset.cpus of one cpuset cannot be a subset of cpuset.cpus.exclusive of a sibling cpuset to avoid the problem that none of those CPUs will be available when these exclusive CPUs are extracted out to a newly enabled partition root. The Documentation/admin-guide/cgroup-v2.rst file is updated to document the new constraints. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Steven Rostedt (Google)
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d9d814eebb |
pstore/ramoops: Add ramoops.mem_name= command line option
Add a method to find a region specified by reserve_mem=nn:align:name for ramoops. Adding a kernel command line parameter: reserve_mem=12M:4096:oops ramoops.mem_name=oops Will use the size and location defined by the memmap parameter where it finds the memory and labels it "oops". The "oops" in the ramoops option is used to search for it. This allows for arbitrary RAM to be used for ramoops if it is known that the memory is not cleared on kernel crashes or soft reboots. Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Kees Cook <kees@kernel.org> Link: https://lore.kernel.org/r/20240613155527.591647061@goodmis.org Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org> |
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Steven Rostedt (Google)
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1e4c64b71c |
mm/memblock: Add "reserve_mem" to reserved named memory at boot up
In order to allow for requesting a memory region that can be used for
things like pstore on multiple machines where the memory layout is not the
same, add a new option to the kernel command line called "reserve_mem".
The format is: reserve_mem=nn:align:name
Where it will find nn amount of memory at the given alignment of align.
The name field is to allow another subsystem to retrieve where the memory
was found. For example:
reserve_mem=12M:4096:oops ramoops.mem_name=oops
Where ramoops.mem_name will tell ramoops that memory was reserved for it
via the reserve_mem option and it can find it by calling:
if (reserve_mem_find_by_name("oops", &start, &size)) {
// start holds the start address and size holds the size given
This is typically used for systems that do not wipe the RAM, and this
command line will try to reserve the same physical memory on soft reboots.
Note, it is not guaranteed to be the same location. For example, if KASLR
places the kernel at the location of where the RAM reservation was from a
previous boot, the new reservation will be at a different location. Any
subsystem using this feature must add a way to verify that the contents of
the physical memory is from a previous boot, as there may be cases where
the memory will not be located at the same location.
Not all systems may work either. There could be bit flips if the reboot
goes through the BIOS. Using kexec to reboot the machine is likely to
have better results in such cases.
Link: https://lore.kernel.org/all/ZjJVnZUX3NZiGW6q@kernel.org/
Suggested-by: Mike Rapoport <rppt@kernel.org>
Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20240613155527.437020271@goodmis.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
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Greg Kroah-Hartman
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b0fc24f361 |
Linux 6.10-rc4
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmZvTbAeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGVksIAJEn4a9IVM8FNCJy Dxo0BItD1/qJ5mLDptqUFRKlxInjbojofz5CyoeIeXb0DwRfB16ALXqNXAkd3APi saoOpfjFsg2H2OqL9CHdkzWcJEAq2lDnL0zaOjumeDVu/EyeT+tC4e4hq1e6Bm0E fPC5ms2b+07DF9Rg6/DW8yPbdM5n6Mz1bRd3fQOIgvpM3yGOyGztEBgTRub/ZUgH 5pNJauknFAZgdiWhgNpc+lPWYZbgHKULQPhUBPdVhDIXPtQNUlKgNTQc6+L0Nmbb K1sG1q7FLeMJOTFGQfD4r26X5DNQUi894q/9SX8X7rcrECdJKcw2WjVyB4myADpf ae2gP+A= =XjWP -----END PGP SIGNATURE----- Merge tag 'v6.10-rc4' into usb-next We need the USB / Thunderbolt fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Thomas Huth
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166d6019f9 |
Documentation: Remove the unused "tp720" from kernel-parameters.txt
The "tp720" switch once belonged to the ps2esdi driver, but this
driver has been removed a long time ago in 2008 in the commit
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Thomas Huth
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9b8b80b9f6 |
Documentation: Remove the unused "topology_updates" from kernel-parameters.txt
The "topology_updates" switch has been removed four years ago in commit
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Thomas Huth
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69bce7f3dc |
Documentation: Remove unused "nps_mtm_hs_ctr" from kernel-parameters.txt
The "nps_mtm_hs_ctr" parameter has been removed in commit
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Thomas Huth
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f730144162 |
Documentation: Remove unused "spia_*" kernel parameters
The kernel module parameters "spia_io_base", "spia_fio_base",
"spia_pedr" and "spia_peddr" have been removed via commit
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Thomas Huth
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f891e73f96 |
Documentation: Remove unused "mtdset=" from kernel-parameters.txt
The kernel parameter "mtdset" has been removed two years ago in
commit
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Thomas Huth
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35a9cbeefd |
Documentation: Remove the "rhash_entries=" from kernel-parameters.txt
"rhash_entries" belonged to the routing cache that has been removed in
commit
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Thomas Huth
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2626f066f8 |
Documentation: Remove "ltpc=" from the kernel-parameters.txt
The string "ltpc" cannot be found in the source code anymore. This
kernel parameter likely belonged to the LocalTalk PC card module
which has been removed in commit
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Thomas Huth
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6bb955d4fb |
Documentation: Add "S390" to the swiotlb kernel parameter
The "swiotlb" kernel parameter is used on s390 for protected virt since
commit
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David Hildenbrand
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384a746bb5 |
Revert "mm: init_mlocked_on_free_v3"
There was insufficient review and no agreement that this is the right
approach.
There are serious flaws with the implementation that make processes using
mlock() not even work with simple fork() [1] and we get reliable crashes
when rebooting.
Further, simply because we might be unmapping a single PTE of a large
mlocked folio, we shouldn't zero out the whole folio.
... especially because the code can also *corrupt* urelated memory because
kernel_init_pages(page, folio_nr_pages(folio));
Could end up writing outside of the actual folio if we work with a tail
page.
Let's revert it. Once there is agreement that this is the right approach,
the issues were fixed and there was reasonable review and proper testing,
we can consider it again.
[1] https://lkml.kernel.org/r/4da9da2f-73e4-45fd-b62f-a8a513314057@redhat.com
Link: https://lkml.kernel.org/r/20240605091710.38961-1-david@redhat.com
Fixes:
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Colton Lewis
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0b5afe0537 |
KVM: arm64: Add early_param to control WFx trapping
Add an early_params to control WFI and WFE trapping. This is to control the degree guests can wait for interrupts on their own without being trapped by KVM. Options for each param are trap and notrap. trap enables the trap. notrap disables the trap. Note that when enabled, traps are allowed but not guaranteed by the CPU architecture. Absent an explicitly set policy, default to current behavior: disabling the trap if only a single task is running and enabling otherwise. Signed-off-by: Colton Lewis <coltonlewis@google.com> Reviewed-by: Jing Zhang <jingzhangos@google.com> Link: https://lore.kernel.org/r/20240523174056.1565133-1-coltonlewis@google.com [ oliver: rework kvm_vcpu_should_clear_tw*() for readability ] Signed-off-by: Oliver Upton <oliver.upton@linux.dev> |
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Steven Rostedt (Google)
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e645535a95 |
tracing: Add option to use memmapped memory for trace boot instance
Add an option to the trace_instance kernel command line parameter that allows it to use the reserved memory from memmap boot parameter. memmap=12M$0x284500000 trace_instance=boot_mapped@0x284500000:12M The above will reserves 12 megs at the physical address 0x284500000. The second parameter will create a "boot_mapped" instance and use the memory reserved as the memory for the ring buffer. That will create an instance called "boot_mapped": /sys/kernel/tracing/instances/boot_mapped Note, because the ring buffer is using a defined memory ranged, it will act just like a memory mapped ring buffer. It will not have a snapshot buffer, as it can't swap out the buffer. The snapshot files as well as any tracers that uses a snapshot will not be present in the boot_mapped instance. Link: https://lkml.kernel.org/r/20240612232026.329660169@goodmis.org Cc: linux-mm@kvack.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Vincent Donnefort <vdonnefort@google.com> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Daniel Bristot de Oliveira <bristot@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vineeth Pillai <vineeth@bitbyteword.org> Cc: Youssef Esmat <youssefesmat@google.com> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Alexander Graf <graf@amazon.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: David Howells <dhowells@redhat.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Ross Zwisler <zwisler@google.com> Cc: Kees Cook <keescook@chromium.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Thomas Huth
|
9b9eec8dc2 |
Documentation: Remove "mfgpt_irq=" from the kernel-parameters.txt file
The kernel parameter mfgpt_irq has been removed in 2009 already by
|
||
|
Jinjie Ruan
|
99a021edde |
Documentation: kernel-parameters: Add RISCV for nohlt
Since commit |
||
|
Linus Torvalds
|
dc772f8237 |
14 hotfixes, 6 of which are cc:stable.
All except the nilfs2 fix affect MM and all are singletons - see the chagelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZmOJLgAKCRDdBJ7gKXxA jinQAQC0AjAhN7zuxfCb9ljCsqyyAfsWbeyXAlqdhuRt2xZONgD+Nv2XwSUw0ZUv xHGgPodMCrmEvuLo048qRpdJRbYo8gw= =sM9B -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2024-06-07-15-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull misc fixes from Andrew Morton: "14 hotfixes, 6 of which are cc:stable. All except the nilfs2 fix affect MM and all are singletons - see the chagelogs for details" * tag 'mm-hotfixes-stable-2024-06-07-15-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors mm: fix xyz_noprof functions calling profiled functions codetag: avoid race at alloc_slab_obj_exts mm/hugetlb: do not call vma_add_reservation upon ENOMEM mm/ksm: fix ksm_zero_pages accounting mm/ksm: fix ksm_pages_scanned accounting kmsan: do not wipe out origin when doing partial unpoisoning vmalloc: check CONFIG_EXECMEM in is_vmalloc_or_module_addr() mm: page_alloc: fix highatomic typing in multi-block buddies nilfs2: fix potential kernel bug due to lack of writeback flag waiting memcg: remove the lockdep assert from __mod_objcg_mlstate() mm: arm64: fix the out-of-bounds issue in contpte_clear_young_dirty_ptes mm: huge_mm: fix undefined reference to `mthp_stats' for CONFIG_SYSFS=n mm: drop the 'anon_' prefix for swap-out mTHP counters |
||
|
Baolin Wang
|
0d648dd5c8 |
mm: drop the 'anon_' prefix for swap-out mTHP counters
The mTHP swap related counters: 'anon_swpout' and 'anon_swpout_fallback' are confusing with an 'anon_' prefix, since the shmem can swap out non-anonymous pages. So drop the 'anon_' prefix to keep consistent with the old swap counter names. This is needed in 6.10-rcX to avoid having an inconsistent ABI out in the field. Link: https://lkml.kernel.org/r/7a8989c13299920d7589007a30065c3e2c19f0e0.1716431702.git.baolin.wang@linux.alibaba.com Fixes: |
||
|
Sean Christopherson
|
c793a62823 |
sched/core: Drop spinlocks on contention iff kernel is preemptible
Use preempt_model_preemptible() to detect a preemptible kernel when
deciding whether or not to reschedule in order to drop a contended
spinlock or rwlock. Because PREEMPT_DYNAMIC selects PREEMPTION, kernels
built with PREEMPT_DYNAMIC=y will yield contended locks even if the live
preemption model is "none" or "voluntary". In short, make kernels with
dynamically selected models behave the same as kernels with statically
selected models.
Somewhat counter-intuitively, NOT yielding a lock can provide better
latency for the relevant tasks/processes. E.g. KVM x86's mmu_lock, a
rwlock, is often contended between an invalidation event (takes mmu_lock
for write) and a vCPU servicing a guest page fault (takes mmu_lock for
read). For _some_ setups, letting the invalidation task complete even
if there is mmu_lock contention provides lower latency for *all* tasks,
i.e. the invalidation completes sooner *and* the vCPU services the guest
page fault sooner.
But even KVM's mmu_lock behavior isn't uniform, e.g. the "best" behavior
can vary depending on the host VMM, the guest workload, the number of
vCPUs, the number of pCPUs in the host, why there is lock contention, etc.
In other words, simply deleting the CONFIG_PREEMPTION guard (or doing the
opposite and removing contention yielding entirely) needs to come with a
big pile of data proving that changing the status quo is a net positive.
Opportunistically document this side effect of preempt=full, as yielding
contended spinlocks can have significant, user-visible impact.
Fixes:
|
||
|
Norihiko Hama
|
804da867ad |
usb-storage: Optimize scan delay more precisely
Current storage scan delay is reduced by the following old commit.
|
||
|
Tetsuo Handa
|
c6144a2116 |
tomoyo: update project links
TOMOYO project has moved to SourceForge.net . Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> |
||
|
Hans de Goede
|
0b178b0267 |
platform/x86: touchscreen_dmi: Add support for setting touchscreen properties from cmdline
On x86/ACPI platforms touchscreens mostly just work without needing any device/model specific configuration. But in some cases (mostly with Silead and Goodix touchscreens) it is still necessary to manually specify various touchscreen-properties on a per model basis. touchscreen_dmi is a special place for DMI quirks for this, but it can be challenging for users to figure out the right property values, especially for Silead touchscreens where non of these can be read back from the touchscreen-controller. ATM users can only test touchscreen properties by editing touchscreen_dmi.c and then building a completely new kernel which makes it unnecessary difficult for users to test and submit properties when necessary for their laptop / tablet model. Add support for specifying properties on the kernel commandline to allow users to easily figure out the right settings. See the added documentation in kernel-parameters.txt for the commandline syntax. Cc: Gregor Riepl <onitake@gmail.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20240523143601.47555-1-hdegoede@redhat.com |
||
|
Michal Koutný
|
3f26a885a0 |
cgroup/pids: Add pids.events.local
Hierarchical counting of events is not practical for watching when a particular pids.max is being hit. Therefore introduce .local flavor of events file (akin to memory controller) that collects only events relevant to given cgroup. The file is only added to the default hierarchy. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Michal Koutný
|
385a635cac |
cgroup/pids: Make event counters hierarchical
The pids.events file should honor the hierarchy, so make the events propagate from their origin up to the root on the unified hierarchy. The legacy behavior remains non-hierarchical. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Michal Koutný
|
73e75e6fc3 |
cgroup/pids: Separate semantics of pids.events related to pids.max
Currently, when pids.max limit is breached in the hierarchy, the event is counted and reported in the cgroup where the forking task resides. This decouples the limit and the notification caused by the limit making it hard to detect when the actual limit was effected. Redefine the pids.events:max as: the number of times the limit of the cgroup was hit. (Implementation differentiates also "forkfail" event but this is currently not exposed as it would better fit into pids.stat. It also differs from pids.events:max only when pids.max is configured on non-leaf cgroups.) Since it changes semantics of the original "max" event, introduce this change only in the v2 API of the controller and add a cgroup2 mount option to revert to the legacy behavior. Signed-off-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Linus Torvalds
|
f6b8e86b7a |
TTY/Serial changes for 6.10-rc1
Here is the big set of tty/serial driver changes for 6.10-rc1. Included
in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos instead
of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial updates from Greg KH:
"Here is the big set of tty/serial driver changes for 6.10-rc1.
Included in here are:
- Usual good set of api cleanups and evolution by Jiri Slaby to make
the serial interfaces move out of the 1990's by using kfifos
instead of hand-rolling their own logic.
- 8250_exar driver updates
- max3100 driver updates
- sc16is7xx driver updates
- exar driver updates
- sh-sci driver updates
- tty ldisc api addition to help refuse bindings
- other smaller serial driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (113 commits)
serial: Clear UPF_DEAD before calling tty_port_register_device_attr_serdev()
serial: imx: Raise TX trigger level to 8
serial: 8250_pnp: Simplify "line" related code
serial: sh-sci: simplify locking when re-issuing RXDMA fails
serial: sh-sci: let timeout timer only run when DMA is scheduled
serial: sh-sci: describe locking requirements for invalidating RXDMA
serial: sh-sci: protect invalidating RXDMA on shutdown
tty: add the option to have a tty reject a new ldisc
serial: core: Call device_set_awake_path() for console port
dt-bindings: serial: brcm,bcm2835-aux-uart: convert to dtschema
tty: serial: uartps: Add support for uartps controller reset
arm64: zynqmp: Add resets property for UART nodes
dt-bindings: serial: cdns,uart: Add optional reset property
serial: 8250_pnp: Switch to DEFINE_SIMPLE_DEV_PM_OPS()
serial: 8250_exar: Keep the includes sorted
serial: 8250_exar: Make type of bit the same in exar_ee_*_bit()
serial: 8250_exar: Use BIT() in exar_ee_read()
serial: 8250_exar: Switch to use dev_err_probe()
serial: 8250_exar: Return directly from switch-cases
serial: 8250_exar: Decrease indentation level
...
|
||
|
Linus Torvalds
|
eb6a9339ef |
Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo: Clean
up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb: Fixes
for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over macros.
The series is "codingstyle: avoid unused parameters for a function-like
macro".
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Merge tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-mm updates from Andrew Morton:
"Mainly singleton patches, documented in their respective changelogs.
Notable series include:
- Some maintenance and performance work for ocfs2 in Heming Zhao's
series "improve write IO performance when fragmentation is high".
- Some ocfs2 bugfixes from Su Yue in the series "ocfs2 bugs fixes
exposed by fstests".
- kfifo header rework from Andy Shevchenko in the series "kfifo:
Clean up kfifo.h".
- GDB script fixes from Florian Rommel in the series "scripts/gdb:
Fixes for $lx_current and $lx_per_cpu".
- After much discussion, a coding-style update from Barry Song
explaining one reason why inline functions are preferred over
macros. The series is "codingstyle: avoid unused parameters for a
function-like macro""
* tag 'mm-nonmm-stable-2024-05-19-11-56' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (62 commits)
fs/proc: fix softlockup in __read_vmcore
nilfs2: convert BUG_ON() in nilfs_finish_roll_forward() to WARN_ON()
scripts: checkpatch: check unused parameters for function-like macro
Documentation: coding-style: ask function-like macros to evaluate parameters
nilfs2: use __field_struct() for a bitwise field
selftests/kcmp: remove unused open mode
nilfs2: remove calls to folio_set_error() and folio_clear_error()
kernel/watchdog_perf.c: tidy up kerneldoc
watchdog: allow nmi watchdog to use raw perf event
watchdog: handle comma separated nmi_watchdog command line
nilfs2: make superblock data array index computation sparse friendly
squashfs: remove calls to set the folio error flag
squashfs: convert squashfs_symlink_read_folio to use folio APIs
scripts/gdb: fix detection of current CPU in KGDB
scripts/gdb: make get_thread_info accept pointers
scripts/gdb: fix parameter handling in $lx_per_cpu
scripts/gdb: fix failing KGDB detection during probe
kfifo: don't use "proxy" headers
media: stih-cec: add missing io.h
media: rc: add missing io.h
...
|
||
|
Linus Torvalds
|
8dde191aab |
Misc fixes:
- Fix a sched_balance_newidle setting bug - Fix bug in the setting of /sys/fs/cgroup/test/cpu.max.burst - Fix variable-shadowing build warning - Extend sched-domains debug output - Fix documentation - Fix comments Signed-off-by: Ingo Molnar <mingo@kernel.org> -----BEGIN PGP SIGNATURE----- iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAmZIbj4RHG1pbmdvQGtl cm5lbC5vcmcACgkQEnMQ0APhK1hEng/+NlAh7mm4AWckVjUxqyUnJ/omaV9Fe5F+ koiihntyvhk+4RR40XomXPq37Av3zPo1dnKI4fJ3yioMs1tB+8JD+nVo3DURLGT/ 4k+lYI+K6RXBzUTpzeYZWVfa+ddGwbRu1KA5joI7QvRfjil7QP5rC5AQbAj0AiVO Xvor0M9vEcfkqShTttx4h2u7WVR4zqVEhBxkWNMT6dMxN2HnKm4qcAiX39E8p+Vx maC2/iO+1rXORRbUh+KBHR40WAwe2CVvh5hCe1sl+/vGfCbAnMK1k+j85UdV1pFD aZ1jSBwIERnx9PdD5zK0GCRx9hmux8mkJCeBseZyK/XubYuVOLiwBxfYA/9C3i3O 1mQizaFBD8zanEiWj10sOxbfry+XhLwcISIiWC+xLpxKb0MvDD1TIeZR1fJv3Oz7 14iYhq2CuKhfntYmV6fYTzSzXL2s16dMYMH/7m7cLY0P/cJo2vw7GNxkwPeJsOVN uX6jnRde2Kp3q+Er3I2u1SGeAZ8fEzXr19MCWRA0qI+wvgYQkaTgoh9zO9AwRNoa 9hS/jc6Gq+O5xBMMJIPZMfOVai9RhYlPmQavFCGJLd3EFoVi9jp9+/iXgtyARCZp rfXFV9Dd9GvpFRzNnsMrLiKswBzUop5+epHYKZhVHJKH7aiHMbGEFD6cgNlf8k9b GFda3ay4JHA= =2okO -----END PGP SIGNATURE----- Merge tag 'sched-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Ingo Molnar: - Fix a sched_balance_newidle setting bug - Fix bug in the setting of /sys/fs/cgroup/test/cpu.max.burst - Fix variable-shadowing build warning - Extend sched-domains debug output - Fix documentation - Fix comments * tag 'sched-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/core: Fix incorrect initialization of the 'burst' parameter in cpu_max_write() sched/fair: Remove stale FREQUENCY_UTIL comment sched/fair: Fix initial util_avg calculation docs: cgroup-v1: Clarify that domain levels are system-specific sched/debug: Dump domains' level sched/fair: Allow disabling sched_balance_newidle with sched_relax_domain_level arch/topology: Fix variable naming to avoid shadowing |
||
|
Linus Torvalds
|
61307b7be4 |
The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs. Notable
series include:
- Lucas Stach has provided some page-mapping
cleanup/consolidation/maintainability work in the series "mm/treewide:
Remove pXd_huge() API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one
test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being allocated:
number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in largely
similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene" Johannes
Weiner has fixed the page allocator's handling of migratetype requests,
with resulting improvements in compaction efficiency.
- In the series "make the hugetlb migration strategy consistent" Baolin
Wang has fixed a hugetlb migration issue, which should improve hugetlb
allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when memory
almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting" Kairui
Song has optimized pagecache insertion, yielding ~10% performance
improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various page->flags
cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb
functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series
"mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs. This
is a simple first-cut implementation for now. The series is "support
multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in the
series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts in
the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call it
GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to
use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes
the initialization code so that migration between different memory types
works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant driver
in the series "mm: follow_pte() improvements and acrn follow_pte()
fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to folio
in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size THP's
in the series "mm: add per-order mTHP alloc and swpout counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled
and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His series
"mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes
the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback instrumentation
in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series "Fix
and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the
series "Improve anon_vma scalability for anon VMAs". Intel's test bot
reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking".
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Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull mm updates from Andrew Morton:
"The usual shower of singleton fixes and minor series all over MM,
documented (hopefully adequately) in the respective changelogs.
Notable series include:
- Lucas Stach has provided some page-mapping cleanup/consolidation/
maintainability work in the series "mm/treewide: Remove pXd_huge()
API".
- In the series "Allow migrate on protnone reference with
MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's
MPOL_PREFERRED_MANY mode, yielding almost doubled performance in
one test.
- In their series "Memory allocation profiling" Kent Overstreet and
Suren Baghdasaryan have contributed a means of determining (via
/proc/allocinfo) whereabouts in the kernel memory is being
allocated: number of calls and amount of memory.
- Matthew Wilcox has provided the series "Various significant MM
patches" which does a number of rather unrelated things, but in
largely similar code sites.
- In his series "mm: page_alloc: freelist migratetype hygiene"
Johannes Weiner has fixed the page allocator's handling of
migratetype requests, with resulting improvements in compaction
efficiency.
- In the series "make the hugetlb migration strategy consistent"
Baolin Wang has fixed a hugetlb migration issue, which should
improve hugetlb allocation reliability.
- Liu Shixin has hit an I/O meltdown caused by readahead in a
memory-tight memcg. Addressed in the series "Fix I/O high when
memory almost met memcg limit".
- In the series "mm/filemap: optimize folio adding and splitting"
Kairui Song has optimized pagecache insertion, yielding ~10%
performance improvement in one test.
- Baoquan He has cleaned up and consolidated the early zone
initialization code in the series "mm/mm_init.c: refactor
free_area_init_core()".
- Baoquan has also redone some MM initializatio code in the series
"mm/init: minor clean up and improvement".
- MM helper cleanups from Christoph Hellwig in his series "remove
follow_pfn".
- More cleanups from Matthew Wilcox in the series "Various
page->flags cleanups".
- Vlastimil Babka has contributed maintainability improvements in the
series "memcg_kmem hooks refactoring".
- More folio conversions and cleanups in Matthew Wilcox's series:
"Convert huge_zero_page to huge_zero_folio"
"khugepaged folio conversions"
"Remove page_idle and page_young wrappers"
"Use folio APIs in procfs"
"Clean up __folio_put()"
"Some cleanups for memory-failure"
"Remove page_mapping()"
"More folio compat code removal"
- David Hildenbrand chipped in with "fs/proc/task_mmu: convert
hugetlb functions to work on folis".
- Code consolidation and cleanup work related to GUP's handling of
hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2".
- Rick Edgecombe has developed some fixes to stack guard gaps in the
series "Cover a guard gap corner case".
- Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the
series "mm/ksm: fix ksm exec support for prctl".
- Baolin Wang has implemented NUMA balancing for multi-size THPs.
This is a simple first-cut implementation for now. The series is
"support multi-size THP numa balancing".
- Cleanups to vma handling helper functions from Matthew Wilcox in
the series "Unify vma_address and vma_pgoff_address".
- Some selftests maintenance work from Dev Jain in the series
"selftests/mm: mremap_test: Optimizations and style fixes".
- Improvements to the swapping of multi-size THPs from Ryan Roberts
in the series "Swap-out mTHP without splitting".
- Kefeng Wang has significantly optimized the handling of arm64's
permission page faults in the series
"arch/mm/fault: accelerate pagefault when badaccess"
"mm: remove arch's private VM_FAULT_BADMAP/BADACCESS"
- GUP cleanups from David Hildenbrand in "mm/gup: consistently call
it GUP-fast".
- hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault
path to use struct vm_fault".
- selftests build fixes from John Hubbard in the series "Fix
selftests/mm build without requiring "make headers"".
- Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the
series "Improved Memory Tier Creation for CPUless NUMA Nodes".
Fixes the initialization code so that migration between different
memory types works as intended.
- David Hildenbrand has improved follow_pte() and fixed an errant
driver in the series "mm: follow_pte() improvements and acrn
follow_pte() fixes".
- David also did some cleanup work on large folio mapcounts in his
series "mm: mapcount for large folios + page_mapcount() cleanups".
- Folio conversions in KSM in Alex Shi's series "transfer page to
folio in KSM".
- Barry Song has added some sysfs stats for monitoring multi-size
THP's in the series "mm: add per-order mTHP alloc and swpout
counters".
- Some zswap cleanups from Yosry Ahmed in the series "zswap
same-filled and limit checking cleanups".
- Matthew Wilcox has been looking at buffer_head code and found the
documentation to be lacking. The series is "Improve buffer head
documentation".
- Multi-size THPs get more work, this time from Lance Yang. His
series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free"
optimizes the freeing of these things.
- Kemeng Shi has added more userspace-visible writeback
instrumentation in the series "Improve visibility of writeback".
- Kemeng Shi then sent some maintenance work on top in the series
"Fix and cleanups to page-writeback".
- Matthew Wilcox reduces mmap_lock traffic in the anon vma code in
the series "Improve anon_vma scalability for anon VMAs". Intel's
test bot reported an improbable 3x improvement in one test.
- SeongJae Park adds some DAMON feature work in the series
"mm/damon: add a DAMOS filter type for page granularity access recheck"
"selftests/damon: add DAMOS quota goal test"
- Also some maintenance work in the series
"mm/damon/paddr: simplify page level access re-check for pageout"
"mm/damon: misc fixes and improvements"
- David Hildenbrand has disabled some known-to-fail selftests ni the
series "selftests: mm: cow: flag vmsplice() hugetlb tests as
XFAIL".
- memcg metadata storage optimizations from Shakeel Butt in "memcg:
reduce memory consumption by memcg stats".
- DAX fixes and maintenance work from Vishal Verma in the series
"dax/bus.c: Fixups for dax-bus locking""
* tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits)
memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order
selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp
mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault
selftests: cgroup: add tests to verify the zswap writeback path
mm: memcg: make alloc_mem_cgroup_per_node_info() return bool
mm/damon/core: fix return value from damos_wmark_metric_value
mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED
selftests: cgroup: remove redundant enabling of memory controller
Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree
Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT
Docs/mm/damon/design: use a list for supported filters
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
selftests/damon: classify tests for functionalities and regressions
selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None'
selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts
selftests/damon/_damon_sysfs: check errors from nr_schemes file reads
mm/damon/core: initialize ->esz_bp from damos_quota_init_priv()
selftests/damon: add a test for DAMOS quota goal
...
|
||
|
Linus Torvalds
|
0cc6f45cec |
IOMMU Updates for Linux v6.10
Including:
- Core:
- IOMMU memory usage observability - This will make the memory used
for IO page tables explicitly visible.
- Simplify arch_setup_dma_ops()
- Intel VT-d:
- Consolidate domain cache invalidation
- Remove private data from page fault message
- Allocate DMAR fault interrupts locally
- Cleanup and refactoring
- ARM-SMMUv2:
- Support for fault debugging hardware on Qualcomm implementations
- Re-land support for the ->domain_alloc_paging() callback
- ARM-SMMUv3:
- Improve handling of MSI allocation failure
- Drop support for the "disable_bypass" cmdline option
- Major rework of the CD creation code, following on directly from the
STE rework merged last time around.
- Add unit tests for the new STE/CD manipulation logic
- AMD-Vi:
- Final part of SVA changes with generic IO page fault handling
- Renesas IPMMU:
- Add support for R8A779H0 hardware
- A couple smaller fixes and updates across the sub-tree
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Merge tag 'iommu-updates-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
"Core:
- IOMMU memory usage observability - This will make the memory used
for IO page tables explicitly visible.
- Simplify arch_setup_dma_ops()
Intel VT-d:
- Consolidate domain cache invalidation
- Remove private data from page fault message
- Allocate DMAR fault interrupts locally
- Cleanup and refactoring
ARM-SMMUv2:
- Support for fault debugging hardware on Qualcomm implementations
- Re-land support for the ->domain_alloc_paging() callback
ARM-SMMUv3:
- Improve handling of MSI allocation failure
- Drop support for the "disable_bypass" cmdline option
- Major rework of the CD creation code, following on directly from
the STE rework merged last time around.
- Add unit tests for the new STE/CD manipulation logic
AMD-Vi:
- Final part of SVA changes with generic IO page fault handling
Renesas IPMMU:
- Add support for R8A779H0 hardware
... and a couple smaller fixes and updates across the sub-tree"
* tag 'iommu-updates-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (80 commits)
iommu/arm-smmu-v3: Make the kunit into a module
arm64: Properly clean up iommu-dma remnants
iommu/amd: Enable Guest Translation after reading IOMMU feature register
iommu/vt-d: Decouple igfx_off from graphic identity mapping
iommu/amd: Fix compilation error
iommu/arm-smmu-v3: Add unit tests for arm_smmu_write_entry
iommu/arm-smmu-v3: Build the whole CD in arm_smmu_make_s1_cd()
iommu/arm-smmu-v3: Move the CD generation for SVA into a function
iommu/arm-smmu-v3: Allocate the CD table entry in advance
iommu/arm-smmu-v3: Make arm_smmu_alloc_cd_ptr()
iommu/arm-smmu-v3: Consolidate clearing a CD table entry
iommu/arm-smmu-v3: Move the CD generation for S1 domains into a function
iommu/arm-smmu-v3: Make CD programming use arm_smmu_write_entry()
iommu/arm-smmu-v3: Add an ops indirection to the STE code
iommu/arm-smmu-qcom: Don't build debug features as a kernel module
iommu/amd: Add SVA domain support
iommu: Add ops->domain_alloc_sva()
iommu/amd: Initial SVA support for AMD IOMMU
iommu/amd: Add support for enable/disable IOPF
iommu/amd: Add IO page fault notifier handler
...
|
||
|
Vitalii Bursov
|
0f1c74befa |
docs: cgroup-v1: Clarify that domain levels are system-specific
Add a clarification that domain levels are system-specific and where to check for system details. Signed-off-by: Vitalii Bursov <vitaly@bursov.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Acked-by: Vincent Guittot <vincent.guittot@linaro.org> Link: https://lore.kernel.org/r/42b177a2e897cdf880caf9c2025f5b609e820334.1714488502.git.vitaly@bursov.com |
||
|
Linus Torvalds
|
6fd600d742 |
media updates for v6.10-rc1
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||
|
Linus Torvalds
|
de6fef50ea |
cgroup: Changes for v6.10
- The locking around cpuset hotplug processing has always been a bit of mess
which was worked around by making hotplug processing asynchronous. The
asynchronity isn't great and led to other issues. We tried to make the
behavior synchronous a while ago but that led to lockdep splats. Waiman
took another stab at cleaning up and making it synchronous. The patch has
been in -next for well over a month and there haven't been any complaints,
so fingers crossed.
- Tracepoints added to help understanding rstat lock contentions.
- A bunch of minor changes - doc updates, code cleanups and selftests.
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Merge tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
- The locking around cpuset hotplug processing has always been a bit of
mess which was worked around by making hotplug processing
asynchronous. The asynchronity isn't great and led to other issues.
We tried to make the behavior synchronous a while ago but that led to
lockdep splats. Waiman took another stab at cleaning up and making it
synchronous. The patch has been in -next for well over a month and
there haven't been any complaints, so fingers crossed.
- Tracepoints added to help understanding rstat lock contentions.
- A bunch of minor changes - doc updates, code cleanups and selftests.
* tag 'cgroup-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (24 commits)
cgroup/rstat: add cgroup_rstat_cpu_lock helpers and tracepoints
selftests/cgroup: Drop define _GNU_SOURCE
docs: cgroup-v1: Update page cache removal functions
selftests/cgroup: fix uninitialized variables in test_zswap.c
selftests/cgroup: cpu_hogger init: use {} instead of {NULL}
selftests/cgroup: fix clang warnings: uninitialized fd variable
selftests/cgroup: fix clang build failures for abs() calls
cgroup/cpuset: Remove outdated comment in sched_partition_write()
cgroup/cpuset: Fix incorrect top_cpuset flags
cgroup/cpuset: Avoid clearing CS_SCHED_LOAD_BALANCE twice
cgroup/cpuset: Statically initialize more members of top_cpuset
cgroup: Avoid unnecessary looping in cgroup_no_v1()
cgroup, legacy_freezer: update comment for freezer_css_offline()
docs, cgroup: add entries for pids to cgroup-v2.rst
cgroup: don't call cgroup1_pidlist_destroy_all() for v2
cgroup_freezer: update comment for freezer_css_online()
cgroup/rstat: desc member cgrp in cgroup_rstat_flush_release
cgroup/rstat: add cgroup_rstat_lock helpers and tracepoints
cgroup/pids: Remove superfluous zeroing
docs: cgroup-v1: Fix description for css_online
...
|
||
|
Linus Torvalds
|
1b294a1f35 |
Networking changes for 6.10.
Core & protocols
----------------
- Complete rework of garbage collection of AF_UNIX sockets.
AF_UNIX is prone to forming reference count cycles due to fd passing
functionality. New method based on Tarjan's Strongly Connected Components
algorithm should be both faster and remove a lot of workarounds
we accumulated over the years.
- Add TCP fraglist GRO support, allowing chaining multiple TCP packets
and forwarding them together. Useful for small switches / routers which
lack basic checksum offload in some scenarios (e.g. PPPoE).
- Support using SMP threads for handling packet backlog i.e. packet
processing from software interfaces and old drivers which don't
use NAPI. This helps move the processing out of the softirq jumble.
- Continue work of converting from rtnl lock to RCU protection.
Don't require rtnl lock when reading: IPv6 routing FIB, IPv6 address
labels, netdev threaded NAPI sysfs files, bonding driver's sysfs files,
MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics, TC Qdiscs,
neighbor entries, ARP entries via ioctl(SIOCGARP), a lot of the link
information available via rtnetlink.
- Small optimizations from Eric to UDP wake up handling, memory accounting,
RPS/RFS implementation, TCP packet sizing etc.
- Allow direct page recycling in the bulk API used by XDP, for +2% PPS.
- Support peek with an offset on TCP sockets.
- Add MPTCP APIs for querying last time packets were received/sent/acked,
and whether MPTCP "upgrade" succeeded on a TCP socket.
- Add intra-node communication shortcut to improve SMC performance.
- Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol driver.
- Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
- Add reset reasons for tracing what caused a TCP reset to be sent.
- Introduce direction attribute for xfrm (IPSec) states.
State can be used either for input or output packet processing.
Things we sprinkled into general kernel code
--------------------------------------------
- Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
This required touch-ups and renaming of a few existing users.
- Add Endian-dependent __counted_by_{le,be} annotations.
- Make building selftests "quieter" by printing summaries like
"CC object.o" rather than full commands with all the arguments.
Netfilter
---------
- Use GFP_KERNEL to clone elements, to deal better with OOM situations
and avoid failures in the .commit step.
BPF
---
- Add eBPF JIT for ARCv2 CPUs.
- Support attaching kprobe BPF programs through kprobe_multi link in
a session mode, meaning, a BPF program is attached to both function entry
and return, the entry program can decide if the return program gets
executed and the entry program can share u64 cookie value with return
program. "Session mode" is a common use-case for tetragon and bpftrace.
- Add the ability to specify and retrieve BPF cookie for raw tracepoint
programs in order to ease migration from classic to raw tracepoints.
- Add an internal-only BPF per-CPU instruction for resolving per-CPU
memory addresses and implement support in x86, ARM64 and RISC-V JITs.
This allows inlining functions which need to access per-CPU state.
- Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
atomics in bpf_arena which can be JITed as a single x86 instruction.
Support BPF arena on ARM64.
- Add a new bpf_wq API for deferring events and refactor process-context
bpf_timer code to keep common code where possible.
- Harden the BPF verifier's and/or/xor value tracking.
- Introduce crypto kfuncs to let BPF programs call kernel crypto APIs.
- Support bpf_tail_call_static() helper for BPF programs with GCC 13.
- Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
program to have code sections where preemption is disabled.
Driver API
----------
- Skip software TC processing completely if all installed rules are
marked as HW-only, instead of checking the HW-only flag rule by rule.
- Add support for configuring PoE (Power over Ethernet), similar to
the already existing support for PoDL (Power over Data Line) config.
- Initial bits of a queue control API, for now allowing a single queue
to be reset without disturbing packet flow to other queues.
- Common (ethtool) statistics for hardware timestamping.
Tests and tooling
-----------------
- Remove the need to create a config file to run the net forwarding tests
so that a naive "make run_tests" can exercise them.
- Define a method of writing tests which require an external endpoint
to communicate with (to send/receive data towards the test machine).
Add a few such tests.
- Create a shared code library for writing Python tests. Expose the YAML
Netlink library from tools/ to the tests for easy Netlink access.
- Move netfilter tests under net/, extend them, separate performance tests
from correctness tests, and iron out issues found by running them
"on every commit".
- Refactor BPF selftests to use common network helpers.
- Further work filling in YAML definitions of Netlink messages for:
nftables, team driver, bonding interfaces, vlan interfaces, VF info,
TC u32 mark, TC police action.
- Teach Python YAML Netlink to decode attribute policies.
- Extend the definition of the "indexed array" construct in the specs
to cover arrays of scalars rather than just nests.
- Add hyperlinks between definitions in generated Netlink docs.
Drivers
-------
- Make sure unsupported flower control flags are rejected by drivers,
and make more drivers report errors directly to the application rather
than dmesg (large number of driver changes from Asbjørn Sloth Tønnesen).
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support multiple RSS contexts and steering traffic to them
- support XDP metadata
- make page pool allocations more NUMA aware
- Intel (100G, ice, idpf):
- extract datapath code common among Intel drivers into a library
- use fewer resources in switchdev by sharing queues with the PF
- add PFCP filter support
- add Ethernet filter support
- use a spinlock instead of HW lock in PTP clock ops
- support 5 layer Tx scheduler topology
- nVidia/Mellanox:
- 800G link modes and 100G SerDes speeds
- per-queue IRQ coalescing configuration
- Marvell Octeon:
- support offloading TC packet mark action
- Ethernet NICs consumer, embedded and virtual:
- stop lying about skb->truesize in USB Ethernet drivers, it messes up
TCP memory calculations
- Google cloud vNIC:
- support changing ring size via ethtool
- support ring reset using the queue control API
- VirtIO net:
- expose flow hash from RSS to XDP
- per-queue statistics
- add selftests
- Synopsys (stmmac):
- support controllers which require an RX clock signal from the MII
bus to perform their hardware initialization
- TI:
- icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
- icssg_prueth: add SW TX / RX Coalescing based on hrtimers
- cpsw: minimal XDP support
- Renesas (ravb):
- support describing the MDIO bus
- Realtek (r8169):
- add support for RTL8168M
- Microchip Sparx5:
- matchall and flower actions mirred and redirect
- Ethernet switches:
- nVidia/Mellanox:
- improve events processing performance
- Marvell:
- add support for MV88E6250 family internal PHYs
- Microchip:
- add DCB and DSCP mapping support for KSZ switches
- vsc73xx: convert to PHYLINK
- Realtek:
- rtl8226b/rtl8221b: add C45 instances and SerDes switching
- Many driver changes related to PHYLIB and PHYLINK deprecated API cleanup.
- Ethernet PHYs:
- Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
- micrel: lan8814: add support for PPS out and external timestamp trigger
- WiFi:
- Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices drivers.
Modern devices can only be configured using nl80211.
- mac80211/cfg80211
- handle color change per link for WiFi 7 Multi-Link Operation
- Intel (iwlwifi):
- don't support puncturing in 5 GHz
- support monitor mode on passive channels
- BZ-W device support
- P2P with HE/EHT support
- re-add support for firmware API 90
- provide channel survey information for Automatic Channel Selection
- MediaTek (mt76):
- mt7921 LED control
- mt7925 EHT radiotap support
- mt7920e PCI support
- Qualcomm (ath11k):
- P2P support for QCA6390, WCN6855 and QCA2066
- support hibernation
- ieee80211-freq-limit Device Tree property support
- Qualcomm (ath12k):
- refactoring in preparation of multi-link support
- suspend and hibernation support
- ACPI support
- debugfs support, including dfs_simulate_radar support
- RealTek:
- rtw88: RTL8723CS SDIO device support
- rtw89: RTL8922AE Wi-Fi 7 PCI device support
- rtw89: complete features of new WiFi 7 chip 8922AE including
BT-coexistence and Wake-on-WLAN
- rtw89: use BIOS ACPI settings to set TX power and channels
- rtl8xxxu: enable Management Frame Protection (MFP) support
- Bluetooth:
- support for Intel BlazarI and Filmore Peak2 (BE201)
- support for MediaTek MT7921S SDIO
- initial support for Intel PCIe BT driver
- remove HCI_AMP support
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Complete rework of garbage collection of AF_UNIX sockets.
AF_UNIX is prone to forming reference count cycles due to fd
passing functionality. New method based on Tarjan's Strongly
Connected Components algorithm should be both faster and remove a
lot of workarounds we accumulated over the years.
- Add TCP fraglist GRO support, allowing chaining multiple TCP
packets and forwarding them together. Useful for small switches /
routers which lack basic checksum offload in some scenarios (e.g.
PPPoE).
- Support using SMP threads for handling packet backlog i.e. packet
processing from software interfaces and old drivers which don't use
NAPI. This helps move the processing out of the softirq jumble.
- Continue work of converting from rtnl lock to RCU protection.
Don't require rtnl lock when reading: IPv6 routing FIB, IPv6
address labels, netdev threaded NAPI sysfs files, bonding driver's
sysfs files, MPLS devconf, IPv4 FIB rules, netns IDs, tcp metrics,
TC Qdiscs, neighbor entries, ARP entries via ioctl(SIOCGARP), a lot
of the link information available via rtnetlink.
- Small optimizations from Eric to UDP wake up handling, memory
accounting, RPS/RFS implementation, TCP packet sizing etc.
- Allow direct page recycling in the bulk API used by XDP, for +2%
PPS.
- Support peek with an offset on TCP sockets.
- Add MPTCP APIs for querying last time packets were received/sent/acked
and whether MPTCP "upgrade" succeeded on a TCP socket.
- Add intra-node communication shortcut to improve SMC performance.
- Add IPv6 (and IPv{4,6}-over-IPv{4,6}) support to the GTP protocol
driver.
- Add HSR-SAN (RedBOX) mode of operation to the HSR protocol driver.
- Add reset reasons for tracing what caused a TCP reset to be sent.
- Introduce direction attribute for xfrm (IPSec) states. State can be
used either for input or output packet processing.
Things we sprinkled into general kernel code:
- Add bitmap_{read,write}(), bitmap_size(), expose BYTES_TO_BITS().
This required touch-ups and renaming of a few existing users.
- Add Endian-dependent __counted_by_{le,be} annotations.
- Make building selftests "quieter" by printing summaries like
"CC object.o" rather than full commands with all the arguments.
Netfilter:
- Use GFP_KERNEL to clone elements, to deal better with OOM
situations and avoid failures in the .commit step.
BPF:
- Add eBPF JIT for ARCv2 CPUs.
- Support attaching kprobe BPF programs through kprobe_multi link in
a session mode, meaning, a BPF program is attached to both function
entry and return, the entry program can decide if the return
program gets executed and the entry program can share u64 cookie
value with return program. "Session mode" is a common use-case for
tetragon and bpftrace.
- Add the ability to specify and retrieve BPF cookie for raw
tracepoint programs in order to ease migration from classic to raw
tracepoints.
- Add an internal-only BPF per-CPU instruction for resolving per-CPU
memory addresses and implement support in x86, ARM64 and RISC-V
JITs. This allows inlining functions which need to access per-CPU
state.
- Optimize x86 BPF JIT's emit_mov_imm64, and add support for various
atomics in bpf_arena which can be JITed as a single x86
instruction. Support BPF arena on ARM64.
- Add a new bpf_wq API for deferring events and refactor
process-context bpf_timer code to keep common code where possible.
- Harden the BPF verifier's and/or/xor value tracking.
- Introduce crypto kfuncs to let BPF programs call kernel crypto
APIs.
- Support bpf_tail_call_static() helper for BPF programs with GCC 13.
- Add bpf_preempt_{disable,enable}() kfuncs in order to allow a BPF
program to have code sections where preemption is disabled.
Driver API:
- Skip software TC processing completely if all installed rules are
marked as HW-only, instead of checking the HW-only flag rule by
rule.
- Add support for configuring PoE (Power over Ethernet), similar to
the already existing support for PoDL (Power over Data Line)
config.
- Initial bits of a queue control API, for now allowing a single
queue to be reset without disturbing packet flow to other queues.
- Common (ethtool) statistics for hardware timestamping.
Tests and tooling:
- Remove the need to create a config file to run the net forwarding
tests so that a naive "make run_tests" can exercise them.
- Define a method of writing tests which require an external endpoint
to communicate with (to send/receive data towards the test
machine). Add a few such tests.
- Create a shared code library for writing Python tests. Expose the
YAML Netlink library from tools/ to the tests for easy Netlink
access.
- Move netfilter tests under net/, extend them, separate performance
tests from correctness tests, and iron out issues found by running
them "on every commit".
- Refactor BPF selftests to use common network helpers.
- Further work filling in YAML definitions of Netlink messages for:
nftables, team driver, bonding interfaces, vlan interfaces, VF
info, TC u32 mark, TC police action.
- Teach Python YAML Netlink to decode attribute policies.
- Extend the definition of the "indexed array" construct in the specs
to cover arrays of scalars rather than just nests.
- Add hyperlinks between definitions in generated Netlink docs.
Drivers:
- Make sure unsupported flower control flags are rejected by drivers,
and make more drivers report errors directly to the application
rather than dmesg (large number of driver changes from Asbjørn
Sloth Tønnesen).
- Ethernet high-speed NICs:
- Broadcom (bnxt):
- support multiple RSS contexts and steering traffic to them
- support XDP metadata
- make page pool allocations more NUMA aware
- Intel (100G, ice, idpf):
- extract datapath code common among Intel drivers into a library
- use fewer resources in switchdev by sharing queues with the PF
- add PFCP filter support
- add Ethernet filter support
- use a spinlock instead of HW lock in PTP clock ops
- support 5 layer Tx scheduler topology
- nVidia/Mellanox:
- 800G link modes and 100G SerDes speeds
- per-queue IRQ coalescing configuration
- Marvell Octeon:
- support offloading TC packet mark action
- Ethernet NICs consumer, embedded and virtual:
- stop lying about skb->truesize in USB Ethernet drivers, it
messes up TCP memory calculations
- Google cloud vNIC:
- support changing ring size via ethtool
- support ring reset using the queue control API
- VirtIO net:
- expose flow hash from RSS to XDP
- per-queue statistics
- add selftests
- Synopsys (stmmac):
- support controllers which require an RX clock signal from the
MII bus to perform their hardware initialization
- TI:
- icssg_prueth: support ICSSG-based Ethernet on AM65x SR1.0 devices
- icssg_prueth: add SW TX / RX Coalescing based on hrtimers
- cpsw: minimal XDP support
- Renesas (ravb):
- support describing the MDIO bus
- Realtek (r8169):
- add support for RTL8168M
- Microchip Sparx5:
- matchall and flower actions mirred and redirect
- Ethernet switches:
- nVidia/Mellanox:
- improve events processing performance
- Marvell:
- add support for MV88E6250 family internal PHYs
- Microchip:
- add DCB and DSCP mapping support for KSZ switches
- vsc73xx: convert to PHYLINK
- Realtek:
- rtl8226b/rtl8221b: add C45 instances and SerDes switching
- Many driver changes related to PHYLIB and PHYLINK deprecated API
cleanup
- Ethernet PHYs:
- Add a new driver for Airoha EN8811H 2.5 Gigabit PHY.
- micrel: lan8814: add support for PPS out and external timestamp trigger
- WiFi:
- Disable Wireless Extensions (WEXT) in all Wi-Fi 7 devices
drivers. Modern devices can only be configured using nl80211.
- mac80211/cfg80211
- handle color change per link for WiFi 7 Multi-Link Operation
- Intel (iwlwifi):
- don't support puncturing in 5 GHz
- support monitor mode on passive channels
- BZ-W device support
- P2P with HE/EHT support
- re-add support for firmware API 90
- provide channel survey information for Automatic Channel Selection
- MediaTek (mt76):
- mt7921 LED control
- mt7925 EHT radiotap support
- mt7920e PCI support
- Qualcomm (ath11k):
- P2P support for QCA6390, WCN6855 and QCA2066
- support hibernation
- ieee80211-freq-limit Device Tree property support
- Qualcomm (ath12k):
- refactoring in preparation of multi-link support
- suspend and hibernation support
- ACPI support
- debugfs support, including dfs_simulate_radar support
- RealTek:
- rtw88: RTL8723CS SDIO device support
- rtw89: RTL8922AE Wi-Fi 7 PCI device support
- rtw89: complete features of new WiFi 7 chip 8922AE including
BT-coexistence and Wake-on-WLAN
- rtw89: use BIOS ACPI settings to set TX power and channels
- rtl8xxxu: enable Management Frame Protection (MFP) support
- Bluetooth:
- support for Intel BlazarI and Filmore Peak2 (BE201)
- support for MediaTek MT7921S SDIO
- initial support for Intel PCIe BT driver
- remove HCI_AMP support"
* tag 'net-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1827 commits)
selftests: netfilter: fix packetdrill conntrack testcase
net: gro: fix napi_gro_cb zeroed alignment
Bluetooth: btintel_pcie: Refactor and code cleanup
Bluetooth: btintel_pcie: Fix warning reported by sparse
Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1
Bluetooth: btintel: Fix compiler warning for multi_v7_defconfig config
Bluetooth: btintel_pcie: Fix compiler warnings
Bluetooth: btintel_pcie: Add *setup* function to download firmware
Bluetooth: btintel_pcie: Add support for PCIe transport
Bluetooth: btintel: Export few static functions
Bluetooth: HCI: Remove HCI_AMP support
Bluetooth: L2CAP: Fix div-by-zero in l2cap_le_flowctl_init()
Bluetooth: qca: Fix error code in qca_read_fw_build_info()
Bluetooth: hci_conn: Use __counted_by() and avoid -Wfamnae warning
Bluetooth: btintel: Add support for Filmore Peak2 (BE201)
Bluetooth: btintel: Add support for BlazarI
LE Create Connection command timeout increased to 20 secs
dt-bindings: net: bluetooth: Add MediaTek MT7921S SDIO Bluetooth
Bluetooth: compute LE flow credits based on recvbuf space
Bluetooth: hci_sync: Use cmd->num_cis instead of magic number
...
|
||
|
Linus Torvalds
|
4f8b6f25eb |
- Add a dm-crypt optional "high_priority" flag that enables the crypt
workqueues to use WQ_HIGHPRI. - Export dm-crypt workqueues via sysfs (by enabling WQ_SYSFS) to allow for improved visibility and controls over IO and crypt workqueues. - Fix dm-crypt to no longer constrain max_segment_size to PAGE_SIZE. This limit isn't needed given that the block core provides late bio splitting if bio exceeds underlying limits (e.g. max_segment_size). - Fix dm-crypt crypt_queue's use of WQ_UNBOUND to not use WQ_CPU_INTENSIVE because it is meaningless with WQ_UNBOUND. - Fix various issues with dm-delay target (ranging from a resource teardown fix, a fix for hung task when using kthread mode, and other improvements that followed from code inspection). -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEJfWUX4UqZ4x1O2wixSPxCi2dA1oFAmZDiggACgkQxSPxCi2d A1oQrwf7BUHy7ehwCjRrVlFTteIlx0ULTpPxictakN/S+xZfcZUcbE20OjNVzdk9 m5dx4Gn557rlMkiC4NDlHazVEVM5BbTpih27rvUgvX2nchUUdfHIT1OvU0isT4Yi h9g/o7i9DnBPjvyNjpXjP9YE7Xg8u2X9mxpv8DyU5M+QpFuofwzsfkCP7g14B0g2 btGxT3AZ5Bo8A/csKeSqHq13Nbq/dcAZZ3IvjIg1xSXjm6CoQ04rfO0TN6SKfsFJ GXteBS2JT1MMcXf3oKweAeQduTE+psVFea7gt/8haKFldnV+DpPNg1gU/7rza5Os eL1+L1iPY5fuEJIkaqPjBVRGkxQqHg== =+OhH -----END PGP SIGNATURE----- Merge tag 'for-6.10/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mike Snitzer: - Add a dm-crypt optional "high_priority" flag that enables the crypt workqueues to use WQ_HIGHPRI. - Export dm-crypt workqueues via sysfs (by enabling WQ_SYSFS) to allow for improved visibility and controls over IO and crypt workqueues. - Fix dm-crypt to no longer constrain max_segment_size to PAGE_SIZE. This limit isn't needed given that the block core provides late bio splitting if bio exceeds underlying limits (e.g. max_segment_size). - Fix dm-crypt crypt_queue's use of WQ_UNBOUND to not use WQ_CPU_INTENSIVE because it is meaningless with WQ_UNBOUND. - Fix various issues with dm-delay target (ranging from a resource teardown fix, a fix for hung task when using kthread mode, and other improvements that followed from code inspection). * tag 'for-6.10/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm-delay: remove timer_lock dm-delay: change locking to avoid contention dm-delay: fix max_delay calculations dm-delay: fix hung task introduced by kthread mode dm-delay: fix workqueue delay_timer race dm-crypt: don't set WQ_CPU_INTENSIVE for WQ_UNBOUND crypt_queue dm: use queue_limits_set dm-crypt: stop constraining max_segment_size to PAGE_SIZE dm-crypt: export sysfs of all workqueues dm-crypt: add the optional "high_priority" flag |
||
|
Linus Torvalds
|
103916ffe2 |
arm64 updates for 6.10
ACPI:
* Support for the Firmware ACPI Control Structure (FACS) signature
feature which is used to reboot out of hibernation on some systems.
Kbuild:
* Support for building Flat Image Tree (FIT) images, where the kernel
Image is compressed alongside a set of devicetree blobs.
Memory management:
* Optimisation of our early page-table manipulation for creation of the
linear mapping.
* Support for userfaultfd write protection, which brings along some nice
cleanups to our handling of invalid but present ptes.
* Extend our use of range TLBI invalidation at EL1.
Perf and PMUs:
* Ensure that the 'pmu->parent' pointer is correctly initialised by PMU
drivers.
* Avoid allocating 'cpumask_t' types on the stack in some PMU drivers.
* Fix parsing of the CPU PMU "version" field in assembly code, as it
doesn't follow the usual architectural rules.
* Add best-effort unwinding support for USER_STACKTRACE
* Minor driver fixes and cleanups.
Selftests:
* Minor cleanups to the arm64 selftests (missing NULL check, unused
variable).
Miscellaneous
* Add a command-line alias for disabling 32-bit application support.
* Add part number for Neoverse-V2 CPUs.
* Minor fixes and cleanups.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"The most interesting parts are probably the mm changes from Ryan which
optimise the creation of the linear mapping at boot and (separately)
implement write-protect support for userfaultfd.
Outside of our usual directories, the Kbuild-related changes under
scripts/ have been acked by Masahiro whilst the drivers/acpi/ parts
have been acked by Rafael and the addition of cpumask_any_and_but()
has been acked by Yury.
ACPI:
- Support for the Firmware ACPI Control Structure (FACS) signature
feature which is used to reboot out of hibernation on some systems
Kbuild:
- Support for building Flat Image Tree (FIT) images, where the kernel
Image is compressed alongside a set of devicetree blobs
Memory management:
- Optimisation of our early page-table manipulation for creation of
the linear mapping
- Support for userfaultfd write protection, which brings along some
nice cleanups to our handling of invalid but present ptes
- Extend our use of range TLBI invalidation at EL1
Perf and PMUs:
- Ensure that the 'pmu->parent' pointer is correctly initialised by
PMU drivers
- Avoid allocating 'cpumask_t' types on the stack in some PMU drivers
- Fix parsing of the CPU PMU "version" field in assembly code, as it
doesn't follow the usual architectural rules
- Add best-effort unwinding support for USER_STACKTRACE
- Minor driver fixes and cleanups
Selftests:
- Minor cleanups to the arm64 selftests (missing NULL check, unused
variable)
Miscellaneous:
- Add a command-line alias for disabling 32-bit application support
- Add part number for Neoverse-V2 CPUs
- Minor fixes and cleanups"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (64 commits)
arm64/mm: Fix pud_user_accessible_page() for PGTABLE_LEVELS <= 2
arm64/mm: Add uffd write-protect support
arm64/mm: Move PTE_PRESENT_INVALID to overlay PTE_NG
arm64/mm: Remove PTE_PROT_NONE bit
arm64/mm: generalize PMD_PRESENT_INVALID for all levels
arm64: simplify arch_static_branch/_jump function
arm64: Add USER_STACKTRACE support
arm64: Add the arm64.no32bit_el0 command line option
drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset()
drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group
drivers/perf: hisi_pcie: Fix out-of-bound access when valid event group
kselftest: arm64: Add a null pointer check
arm64: defer clearing DAIF.D
arm64: assembler: update stale comment for disable_step_tsk
arm64/sysreg: Update PIE permission encodings
kselftest/arm64: Remove unused parameters in abi test
perf/arm-spe: Assign parents for event_source device
perf/arm-smmuv3: Assign parents for event_source device
perf/arm-dsu: Assign parents for event_source device
perf/arm-dmc620: Assign parents for event_source device
...
|
||
|
Linus Torvalds
|
9776dd3609 |
X86 interrupt handling update:
Support for posted interrupts on bare metal
Posted interrupts is a virtualization feature which allows to inject
interrupts directly into a guest without host interaction. The VT-d
interrupt remapping hardware sets the bit which corresponds to the
interrupt vector in a vector bitmap which is either used to inject the
interrupt directly into the guest via a virtualized APIC or in case
that the guest is scheduled out provides a host side notification
interrupt which informs the host that an interrupt has been marked
pending in the bitmap.
This can be utilized on bare metal for scenarios where multiple
devices, e.g. NVME storage, raise interrupts with a high frequency. In
the default mode these interrupts are handles independently and
therefore require a full roundtrip of interrupt entry/exit.
Utilizing posted interrupts this roundtrip overhead can be avoided by
coalescing these interrupt entries to a single entry for the posted
interrupt notification. The notification interrupt then demultiplexes
the pending bits in a memory based bitmap and invokes the corresponding
device specific handlers.
Depending on the usage scenario and device utilization throughput
improvements between 10% and 130% have been measured.
As this is only relevant for high end servers with multiple device
queues per CPU attached and counterproductive for situations where
interrupts are arriving at distinct times, the functionality is opt-in
via a kernel command line parameter.
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Merge tag 'x86-irq-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 interrupt handling updates from Thomas Gleixner:
"Add support for posted interrupts on bare metal.
Posted interrupts is a virtualization feature which allows to inject
interrupts directly into a guest without host interaction. The VT-d
interrupt remapping hardware sets the bit which corresponds to the
interrupt vector in a vector bitmap which is either used to inject the
interrupt directly into the guest via a virtualized APIC or in case
that the guest is scheduled out provides a host side notification
interrupt which informs the host that an interrupt has been marked
pending in the bitmap.
This can be utilized on bare metal for scenarios where multiple
devices, e.g. NVME storage, raise interrupts with a high frequency. In
the default mode these interrupts are handles independently and
therefore require a full roundtrip of interrupt entry/exit.
Utilizing posted interrupts this roundtrip overhead can be avoided by
coalescing these interrupt entries to a single entry for the posted
interrupt notification. The notification interrupt then demultiplexes
the pending bits in a memory based bitmap and invokes the
corresponding device specific handlers.
Depending on the usage scenario and device utilization throughput
improvements between 10% and 130% have been measured.
As this is only relevant for high end servers with multiple device
queues per CPU attached and counterproductive for situations where
interrupts are arriving at distinct times, the functionality is opt-in
via a kernel command line parameter"
* tag 'x86-irq-2024-05-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/irq: Use existing helper for pending vector check
iommu/vt-d: Enable posted mode for device MSIs
iommu/vt-d: Make posted MSI an opt-in command line option
x86/irq: Extend checks for pending vectors to posted interrupts
x86/irq: Factor out common code for checking pending interrupts
x86/irq: Install posted MSI notification handler
x86/irq: Factor out handler invocation from common_interrupt()
x86/irq: Set up per host CPU posted interrupt descriptors
x86/irq: Reserve a per CPU IDT vector for posted MSIs
x86/irq: Add a Kconfig option for posted MSI
x86/irq: Remove bitfields in posted interrupt descriptor
x86/irq: Unionize PID.PIR for 64bit access w/o casting
KVM: VMX: Move posted interrupt descriptor out of VMX code
|
||
|
Linus Torvalds
|
6e5a0c30b6 |
Scheduler changes for v6.10:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt. affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt. arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix.
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
- Add cpufreq pressure feedback for the scheduler
- Rework misfit load-balancing wrt affinity restrictions
- Clean up and simplify the code around ::overutilized and
::overload access.
- Simplify sched_balance_newidle()
- Bump SCHEDSTAT_VERSION to 16 due to a cleanup of CPU_MAX_IDLE_TYPES
handling that changed the output.
- Rework & clean up <asm/vtime.h> interactions wrt arch_vtime_task_switch()
- Reorganize, clean up and unify most of the higher level
scheduler balancing function names around the sched_balance_*()
prefix
- Simplify the balancing flag code (sched_balance_running)
- Miscellaneous cleanups & fixes
* tag 'sched-core-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
sched/pelt: Remove shift of thermal clock
sched/cpufreq: Rename arch_update_thermal_pressure() => arch_update_hw_pressure()
thermal/cpufreq: Remove arch_update_thermal_pressure()
sched/cpufreq: Take cpufreq feedback into account
cpufreq: Add a cpufreq pressure feedback for the scheduler
sched/fair: Fix update of rd->sg_overutilized
sched/vtime: Do not include <asm/vtime.h> header
s390/irq,nmi: Include <asm/vtime.h> header directly
s390/vtime: Remove unused __ARCH_HAS_VTIME_TASK_SWITCH leftover
sched/vtime: Get rid of generic vtime_task_switch() implementation
sched/vtime: Remove confusing arch_vtime_task_switch() declaration
sched/balancing: Simplify the sg_status bitmask and use separate ->overloaded and ->overutilized flags
sched/fair: Rename set_rd_overutilized_status() to set_rd_overutilized()
sched/fair: Rename SG_OVERLOAD to SG_OVERLOADED
sched/fair: Rename {set|get}_rd_overload() to {set|get}_rd_overloaded()
sched/fair: Rename root_domain::overload to ::overloaded
sched/fair: Use helper functions to access root_domain::overload
sched/fair: Check root_domain::overload value before update
sched/fair: Combine EAS check with root_domain::overutilized access
sched/fair: Simplify the continue_balancing logic in sched_balance_newidle()
...
|
||
|
Jakub Kicinski
|
6e62702feb |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZkGcZAAKCRDbK58LschI g6o6APwLsqhrM2w71VUN5ciCxu4H5VDtZp6wkdqtVbxxU4qNxQEApKgYgKt8ZLF3 Kily5c7m+S4ZXhMX21rb8JhSAz0dfQk= =5Dk7 -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2024-05-13 We've added 119 non-merge commits during the last 14 day(s) which contain a total of 134 files changed, 9462 insertions(+), 4742 deletions(-). The main changes are: 1) Add BPF JIT support for 32-bit ARCv2 processors, from Shahab Vahedi. 2) Add BPF range computation improvements to the verifier in particular around XOR and OR operators, refactoring of checks for range computation and relaxing MUL range computation so that src_reg can also be an unknown scalar, from Cupertino Miranda. 3) Add support to attach kprobe BPF programs through kprobe_multi link in a session mode, meaning, a BPF program is attached to both function entry and return, the entry program can decide if the return program gets executed and the entry program can share u64 cookie value with return program. Session mode is a common use-case for tetragon and bpftrace, from Jiri Olsa. 4) Fix a potential overflow in libbpf's ring__consume_n() and improve libbpf as well as BPF selftest's struct_ops handling, from Andrii Nakryiko. 5) Improvements to BPF selftests in context of BPF gcc backend, from Jose E. Marchesi & David Faust. 6) Migrate remaining BPF selftest tests from test_sock_addr.c to prog_test- -style in order to retire the old test, run it in BPF CI and additionally expand test coverage, from Jordan Rife. 7) Big batch for BPF selftest refactoring in order to remove duplicate code around common network helpers, from Geliang Tang. 8) Another batch of improvements to BPF selftests to retire obsolete bpf_tcp_helpers.h as everything is available vmlinux.h, from Martin KaFai Lau. 9) Fix BPF map tear-down to not walk the map twice on free when both timer and wq is used, from Benjamin Tissoires. 10) Fix BPF verifier assumptions about socket->sk that it can be non-NULL, from Alexei Starovoitov. 11) Change BTF build scripts to using --btf_features for pahole v1.26+, from Alan Maguire. 12) Small improvements to BPF reusing struct_size() and krealloc_array(), from Andy Shevchenko. 13) Fix s390 JIT to emit a barrier for BPF_FETCH instructions, from Ilya Leoshkevich. 14) Extend TCP ->cong_control() callback in order to feed in ack and flag parameters and allow write-access to tp->snd_cwnd_stamp from BPF program, from Miao Xu. 15) Add support for internal-only per-CPU instructions to inline bpf_get_smp_processor_id() helper call for arm64 and riscv64 BPF JITs, from Puranjay Mohan. 16) Follow-up to remove the redundant ethtool.h from tooling infrastructure, from Tushar Vyavahare. 17) Extend libbpf to support "module:<function>" syntax for tracing programs, from Viktor Malik. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (119 commits) bpf: make list_for_each_entry portable bpf: ignore expected GCC warning in test_global_func10.c bpf: disable strict aliasing in test_global_func9.c selftests/bpf: Free strdup memory in xdp_hw_metadata selftests/bpf: Fix a few tests for GCC related warnings. bpf: avoid gcc overflow warning in test_xdp_vlan.c tools: remove redundant ethtool.h from tooling infra selftests/bpf: Expand ATTACH_REJECT tests selftests/bpf: Expand getsockname and getpeername tests sefltests/bpf: Expand sockaddr hook deny tests selftests/bpf: Expand sockaddr program return value tests selftests/bpf: Retire test_sock_addr.(c|sh) selftests/bpf: Remove redundant sendmsg test cases selftests/bpf: Migrate ATTACH_REJECT test cases selftests/bpf: Migrate expected_attach_type tests selftests/bpf: Migrate wildcard destination rewrite test selftests/bpf: Migrate sendmsg6 v4 mapped address tests selftests/bpf: Migrate sendmsg deny test cases selftests/bpf: Migrate WILDCARD_IP test selftests/bpf: Handle SYSCALL_EPERM and SYSCALL_ENOTSUPP test cases ... ==================== Link: https://lore.kernel.org/r/20240513134114.17575-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
||
|
Linus Torvalds
|
8815da98e0 |
Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by some
distributions that can break the PDF build.
- Various updates and additions to the Spanish, Chinese, Italian, and
Japanese translations.
- Update the stable-kernel rules to match modern practice
...and the usual array of corrections, updates, and typo fixes.
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Merge tag 'docs-6.10' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Another not-too-busy cycle for documentation, including:
- Some build-system changes to detect the variable fonts installed by
some distributions that can break the PDF build.
- Various updates and additions to the Spanish, Chinese, Italian, and
Japanese translations.
- Update the stable-kernel rules to match modern practice
... and the usual array of corrections, updates, and typo fixes"
* tag 'docs-6.10' of git://git.lwn.net/linux: (42 commits)
cgroup: Add documentation for missing zswap memory.stat
kernel-doc: Added "*" in $type_constants2 to fix 'make htmldocs' warning.
docs:core-api: fixed typos and grammar in printk-index page
Documentation: tracing: Fix spelling mistakes
docs/zh_CN/rust: Update the translation of quick-start to 6.9-rc4
docs/zh_CN/rust: Update the translation of general-information to 6.9-rc4
docs/zh_CN/rust: Update the translation of coding-guidelines to 6.9-rc4
docs/zh_CN/rust: Update the translation of arch-support to 6.9-rc4
docs: stable-kernel-rules: fix typo sent->send
docs/zh_CN: remove two inconsistent spaces
docs: scripts/check-variable-fonts.sh: Improve commands for detection
docs: stable-kernel-rules: create special tag to flag 'no backporting'
docs: stable-kernel-rules: explain use of stable@kernel.org (w/o @vger.)
docs: stable-kernel-rules: remove code-labels tags and a indention level
docs: stable-kernel-rules: call mainline by its name and change example
docs: stable-kernel-rules: reduce redundancy
docs, kprobes: Add riscv as supported architecture
Docs: typos/spelling
docs: kernel_include.py: Cope with docutils 0.21
docs: ja_JP/howto: Catch up update in v6.8
...
|
||
|
Linus Torvalds
|
c024814828 |
Hi,
This is pull request for trusted keys subsystem containing a new key type for the Data Co-Processor (DCP), which is an IP core built into many NXP SoCs such as i.mx6ull. BR, Jarkko -----BEGIN PGP SIGNATURE----- iJYEABYKAD4WIQRE6pSOnaBC00OEHEIaerohdGur0gUCZjzswCAcamFya2tvLnNh a2tpbmVuQGxpbnV4LmludGVsLmNvbQAKCRAaerohdGur0iVQAP9lxVjTKjMHQB01 KFAXUogNU42JuJjzEiC5TaDxFPNHlAEAqVBYnPIZdP4VMF3UalVgIu/eRfvxTW/t klC+q7WiEwg= =+33z -----END PGP SIGNATURE----- Merge tag 'keys-trusted-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull trusted keys updates from Jarkko Sakkinen: "This contains a new key type for the Data Co-Processor (DCP), which is an IP core built into many NXP SoCs such as i.mx6ull" * tag 'keys-trusted-next-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: docs: trusted-encrypted: add DCP as new trust source docs: document DCP-backed trusted keys kernel params MAINTAINERS: add entry for DCP-based trusted keys KEYS: trusted: Introduce NXP DCP-backed trusted keys KEYS: trusted: improve scalability of trust source config crypto: mxs-dcp: Add support for hardware-bound keys |
||
|
Illia Ostapyshyn
|
62158261a8 |
docs: cgroup-v1: Update page cache removal functions
Commit |
||
|
Linus Torvalds
|
c0b9620bc3 |
RCU pull request for v6.10
This pull request contains the following branches: fixes.2024.04.15a: Fix a lockdep complain for lazy-preemptible kernel, remove redundant BH disable for TINY_RCU, remove redundant READ_ONCE() in tree.c, fix false positives KCSAN splat and fix buffer overflow in the print_cpu_stall_info(). misc.2024.04.12a: Misc updates related to bpf, tracing and update the MAINTAINERS file. rcu-sync-normal-improve.2024.04.15a: An improvement of a normal synchronize_rcu() call in terms of latency. It maintains a separate track for sync. users only. This approach bypasses per-cpu nocb-lists thus sync-users do not depend on nocb-list length and how fast regular callbacks are processed. rcu-tasks.2024.04.15a: RCU tasks, switch tasks RCU grace periods to sleep at TASK_IDLE priority, fix some comments, add some diagnostic warning to the exit_tasks_rcu_start() and fix a buffer overflow in the show_rcu_tasks_trace_gp_kthread(). rcutorture.2024.04.15a: Increase memory to guest OS, fix a Tasks Rude RCU testing, some updates for TREE09, dump mode information to debug GP kthread state, remove redundant READ_ONCE(), fix some comments about RCU_TORTURE_PIPE_LEN and pipe_count, remove some redundant pointer initialization, fix a hung splat task by when the rcutorture tests start to exit, fix invalid context warning, add '--do-kvfree' parameter to torture test and use slow register unregister callbacks only for rcutype test. -----BEGIN PGP SIGNATURE----- iQGzBAABCgAdFiEEu6QRe/mAUYNn5U0PBYqkjnKWLM8FAmYzsmUACgkQBYqkjnKW LM/FAwv+LcIJ9lO/wzUpnH3d3djBOPmyu7Us8ERNY5lcVZ+neS2m3vxq0kOk/cnV RGgZc7qjWqMQ9hAx/MmIodmiw036ceRDe5CP/Ec/TYx68m+NPG3VnP08s/xLXLlx n8aSJJu37y0ElMQMwvuQaoNJ2xqlZ8AHCR6iaqJtzmPBR6zHLyeCPVpdPJQfcSO7 +9ABzqo8isGxeuaAE7y0WUp0ZsSpdYvdext5SStjtvZ+hKERdVluhBF+OxZIZByp RSBoZJrbTKKpzTUBSE0ci+mlfqBPmSVjjqvygscuwOoKhm+601E51DYb1QXkGujq vuc1f/c7VjTAXyvs9k4An2x3XcN5SFhA6Bhc+L6aU/UJBzAWrJJkVOwS79gHNSn1 qshyhpDLE8MiBEi0QxaEmBZLkz3BX1aYbQA0+5wvgoz0u8QglrpRrPRIWUWC0wvq SOLIibZkJuPUOZuD5AP4tg80swTuSCvyWuiKUVRnJK9FsYKdcyNUCnOLIwUzQlrg 1/hatlvS =cq8V -----END PGP SIGNATURE----- Merge tag 'rcu.next.v6.10' of https://github.com/urezki/linux Pull RCU updates from Uladzislau Rezki: - Fix a lockdep complain for lazy-preemptible kernel, remove redundant BH disable for TINY_RCU, remove redundant READ_ONCE() in tree.c, fix false positives KCSAN splat and fix buffer overflow in the print_cpu_stall_info(). - Misc updates related to bpf, tracing and update the MAINTAINERS file. - An improvement of a normal synchronize_rcu() call in terms of latency. It maintains a separate track for sync. users only. This approach bypasses per-cpu nocb-lists thus sync-users do not depend on nocb-list length and how fast regular callbacks are processed. - RCU tasks: switch tasks RCU grace periods to sleep at TASK_IDLE priority, fix some comments, add some diagnostic warning to the exit_tasks_rcu_start() and fix a buffer overflow in the show_rcu_tasks_trace_gp_kthread(). - RCU torture: Increase memory to guest OS, fix a Tasks Rude RCU testing, some updates for TREE09, dump mode information to debug GP kthread state, remove redundant READ_ONCE(), fix some comments about RCU_TORTURE_PIPE_LEN and pipe_count, remove some redundant pointer initialization, fix a hung splat task by when the rcutorture tests start to exit, fix invalid context warning, add '--do-kvfree' parameter to torture test and use slow register unregister callbacks only for rcutype test. * tag 'rcu.next.v6.10' of https://github.com/urezki/linux: (48 commits) rcutorture: Use rcu_gp_slow_register/unregister() only for rcutype test torture: Scale --do-kvfree test time rcutorture: Fix invalid context warning when enable srcu barrier testing rcutorture: Make stall-tasks directly exit when rcutorture tests end rcutorture: Removing redundant function pointer initialization rcutorture: Make rcutorture support print rcu-tasks gp state rcutorture: Use the gp_kthread_dbg operation specified by cur_ops rcutorture: Re-use value stored to ->rtort_pipe_count instead of re-reading rcutorture: Fix rcu_torture_one_read() pipe_count overflow comment rcutorture: Remove extraneous rcu_torture_pipe_update_one() READ_ONCE() rcu: Allocate WQ with WQ_MEM_RECLAIM bit set rcu: Support direct wake-up of synchronize_rcu() users rcu: Add a trace event for synchronize_rcu_normal() rcu: Reduce synchronize_rcu() latency rcu: Fix buffer overflow in print_cpu_stall_info() rcu: Mollify sparse with RCU guard rcu-tasks: Fix show_rcu_tasks_trace_gp_kthread buffer overflow rcu-tasks: Fix the comments for tasks_rcu_exit_srcu_stall_timer rcu-tasks: Replace exit_tasks_rcu_start() initialization with WARN_ON_ONCE() rcu: Remove redundant CONFIG_PROVE_RCU #if condition ... |
||
|
Linus Torvalds
|
d65e1a0f30 |
- Store AP Query Configuration Information in a static buffer
- Rework the AP initialization and add missing cleanups to the error path - Swap IRQ and AP bus/device registration to avoid race conditions - Export prot_virt_guest symbol - Introduce AP configuration changes notifier interface to facilitate modularization of the AP bus - Add CONFIG_AP kernel configuration option to allow modularization of the AP bus - Rework CONFIG_ZCRYPT_DEBUG kernel configuration option description and dependency and rename it to CONFIG_AP_DEBUG - Convert sprintf() and snprintf() to sysfs_emit() in CIO code - Adjust indentation of RELOCS command build step - Make crypto performance counters upward compatible - Convert make_page_secure() and gmap_make_secure() to use folio - Rework channel-utilization-block (CUB) handling in preparation of introducing additional CUBs - Use attribute groups to simplify registration, removal and extension of measurement-related channel-path sysfs attributes - Add a per-channel-path binary "ext_measurement" sysfs attribute that provides access to extended channel-path measurement data - Export measurement data for all channel-measurement-groups (CMG), not only for a specific ones. This enables support of new CMG data formats in userspace without the need for kernel changes - Add a per-channel-path sysfs attribute "speed_bps" that provides the operating speed in bits per second or 0 if the operating speed is not available - The CIO tracepoint subchannel-type field "st" is incorrectly set to the value of subchannel-enabled SCHIB "ena" field. Fix that - Do not forcefully limit vmemmap starting address to MAX_PHYSMEM_BITS - Consider the maximum physical address available to a DCSS segment (512GB) when memory layout is set up - Simplify the virtual memory layout setup by reducing the size of identity mapping vs vmemmap overlap - Swap vmalloc and Lowcore/Real Memory Copy areas in virtual memory. This will allow to place the kernel image next to kernel modules - Move everyting KASLR related from <asm/setup.h> to <asm/page.h> - Put virtual memory layout information into a structure to improve code generation - Currently __kaslr_offset is the kernel offset in both physical and virtual memory spaces. Uncouple these offsets to allow uncoupling of the addresses spaces - Currently the identity mapping base address is implicit and is always set to zero. Make it explicit by putting into __identity_base persistent boot variable and use it in proper context - Introduce .amode31 section start and end macros AMODE31_START and AMODE31_END - Introduce OS_INFO entries that do not reference any data in memory, but rather provide only values - Store virtual memory layout in OS_INFO. It is read out by makedumpfile, crash and other tools - Store virtual memory layout in VMCORE_INFO. It is read out by crash and other tools when /proc/kcore device is used - Create additional PT_LOAD ELF program header that covers kernel image only, so that vmcore tools could locate kernel text and data when virtual and physical memory spaces are uncoupled - Uncouple physical and virtual address spaces - Map kernel at fixed location when KASLR mode is disabled. The location is defined by CONFIG_KERNEL_IMAGE_BASE kernel configuration value. - Rework deployment of kernel image for both compressed and uncompressed variants as defined by CONFIG_KERNEL_UNCOMPRESSED kernel configuration value - Move .vmlinux.relocs section in front of the compressed kernel. The interim section rescue step is avoided as result - Correct modules thunk offset calculation when branch target is more than 2GB away - Kernel modules contain their own set of expoline thunks. Now that the kernel modules area is less than 4GB away from kernel expoline thunks, make modules use kernel expolines. Also make EXPOLINE_EXTERN the default if the compiler supports it - userfaultfd can insert shared zeropages into processes running VMs, but that is not allowed for s390. Fallback to allocating a fresh zeroed anonymous folio and insert that instead - Re-enable shared zeropages for non-PV and non-skeys KVM guests - Rename hex2bitmap() to ap_hex2bitmap() and export it for external use - Add ap_config sysfs attribute to provide the means for setting or displaying adapters, domains and control domains assigned to a vfio-ap mediated device in a single operation - Make vfio_ap_mdev_link_queue() ignore duplicate link requests - Add write support to ap_config sysfs attribute to allow atomic update a vfio-ap mediated device state - Document ap_config sysfs attribute - Function os_info_old_init() is expected to be called only from a regular kdump kernel. Enable it to be called from a stand-alone dump kernel - Address gcc -Warray-bounds warning and fix array size in struct os_info - s390 does not support SMBIOS, so drop unneeded CONFIG_DMI checks - Use unwinder instead of __builtin_return_address() with ftrace to prevent returning of undefined values - Sections .hash and .gnu.hash are only created when CONFIG_PIE_BUILD kernel is enabled. Drop these for the case CONFIG_PIE_BUILD is disabled - Compile kernel with -fPIC and link with -no-pie to allow kpatch feature always succeed and drop the whole CONFIG_PIE_BUILD option-enabled code - Add missing virt_to_phys() converter for VSIE facility and crypto control blocks -----BEGIN PGP SIGNATURE----- iI0EABYIADUWIQQrtrZiYVkVzKQcYivNdxKlNrRb8AUCZjkp5xccYWdvcmRlZXZA bGludXguaWJtLmNvbQAKCRDNdxKlNrRb8D99AQCEby+KHssuZe9m0NvvikWREYBC myqob4EmdU3KdTEbNAEAt2OB7mzSQc90yjawI+Je7vwVyh3uc2Nb4Qg05yO6owI= =eOYN -----END PGP SIGNATURE----- Merge tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Alexander Gordeev: - Store AP Query Configuration Information in a static buffer - Rework the AP initialization and add missing cleanups to the error path - Swap IRQ and AP bus/device registration to avoid race conditions - Export prot_virt_guest symbol - Introduce AP configuration changes notifier interface to facilitate modularization of the AP bus - Add CONFIG_AP kernel configuration option to allow modularization of the AP bus - Rework CONFIG_ZCRYPT_DEBUG kernel configuration option description and dependency and rename it to CONFIG_AP_DEBUG - Convert sprintf() and snprintf() to sysfs_emit() in CIO code - Adjust indentation of RELOCS command build step - Make crypto performance counters upward compatible - Convert make_page_secure() and gmap_make_secure() to use folio - Rework channel-utilization-block (CUB) handling in preparation of introducing additional CUBs - Use attribute groups to simplify registration, removal and extension of measurement-related channel-path sysfs attributes - Add a per-channel-path binary "ext_measurement" sysfs attribute that provides access to extended channel-path measurement data - Export measurement data for all channel-measurement-groups (CMG), not only for a specific ones. This enables support of new CMG data formats in userspace without the need for kernel changes - Add a per-channel-path sysfs attribute "speed_bps" that provides the operating speed in bits per second or 0 if the operating speed is not available - The CIO tracepoint subchannel-type field "st" is incorrectly set to the value of subchannel-enabled SCHIB "ena" field. Fix that - Do not forcefully limit vmemmap starting address to MAX_PHYSMEM_BITS - Consider the maximum physical address available to a DCSS segment (512GB) when memory layout is set up - Simplify the virtual memory layout setup by reducing the size of identity mapping vs vmemmap overlap - Swap vmalloc and Lowcore/Real Memory Copy areas in virtual memory. This will allow to place the kernel image next to kernel modules - Move everyting KASLR related from <asm/setup.h> to <asm/page.h> - Put virtual memory layout information into a structure to improve code generation - Currently __kaslr_offset is the kernel offset in both physical and virtual memory spaces. Uncouple these offsets to allow uncoupling of the addresses spaces - Currently the identity mapping base address is implicit and is always set to zero. Make it explicit by putting into __identity_base persistent boot variable and use it in proper context - Introduce .amode31 section start and end macros AMODE31_START and AMODE31_END - Introduce OS_INFO entries that do not reference any data in memory, but rather provide only values - Store virtual memory layout in OS_INFO. It is read out by makedumpfile, crash and other tools - Store virtual memory layout in VMCORE_INFO. It is read out by crash and other tools when /proc/kcore device is used - Create additional PT_LOAD ELF program header that covers kernel image only, so that vmcore tools could locate kernel text and data when virtual and physical memory spaces are uncoupled - Uncouple physical and virtual address spaces - Map kernel at fixed location when KASLR mode is disabled. The location is defined by CONFIG_KERNEL_IMAGE_BASE kernel configuration value. - Rework deployment of kernel image for both compressed and uncompressed variants as defined by CONFIG_KERNEL_UNCOMPRESSED kernel configuration value - Move .vmlinux.relocs section in front of the compressed kernel. The interim section rescue step is avoided as result - Correct modules thunk offset calculation when branch target is more than 2GB away - Kernel modules contain their own set of expoline thunks. Now that the kernel modules area is less than 4GB away from kernel expoline thunks, make modules use kernel expolines. Also make EXPOLINE_EXTERN the default if the compiler supports it - userfaultfd can insert shared zeropages into processes running VMs, but that is not allowed for s390. Fallback to allocating a fresh zeroed anonymous folio and insert that instead - Re-enable shared zeropages for non-PV and non-skeys KVM guests - Rename hex2bitmap() to ap_hex2bitmap() and export it for external use - Add ap_config sysfs attribute to provide the means for setting or displaying adapters, domains and control domains assigned to a vfio-ap mediated device in a single operation - Make vfio_ap_mdev_link_queue() ignore duplicate link requests - Add write support to ap_config sysfs attribute to allow atomic update a vfio-ap mediated device state - Document ap_config sysfs attribute - Function os_info_old_init() is expected to be called only from a regular kdump kernel. Enable it to be called from a stand-alone dump kernel - Address gcc -Warray-bounds warning and fix array size in struct os_info - s390 does not support SMBIOS, so drop unneeded CONFIG_DMI checks - Use unwinder instead of __builtin_return_address() with ftrace to prevent returning of undefined values - Sections .hash and .gnu.hash are only created when CONFIG_PIE_BUILD kernel is enabled. Drop these for the case CONFIG_PIE_BUILD is disabled - Compile kernel with -fPIC and link with -no-pie to allow kpatch feature always succeed and drop the whole CONFIG_PIE_BUILD option-enabled code - Add missing virt_to_phys() converter for VSIE facility and crypto control blocks * tag 's390-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (54 commits) Revert "s390: Relocate vmlinux ELF data to virtual address space" KVM: s390: vsie: Use virt_to_phys for crypto control block s390: Relocate vmlinux ELF data to virtual address space s390: Compile kernel with -fPIC and link with -no-pie s390: vmlinux.lds.S: Drop .hash and .gnu.hash for !CONFIG_PIE_BUILD s390/ftrace: Use unwinder instead of __builtin_return_address() s390/pci: Drop unneeded reference to CONFIG_DMI s390/os_info: Fix array size in struct os_info s390/os_info: Initialize old os_info in standalone dump kernel docs: Update s390 vfio-ap doc for ap_config sysfs attribute s390/vfio-ap: Add write support to sysfs attr ap_config s390/vfio-ap: Ignore duplicate link requests in vfio_ap_mdev_link_queue s390/vfio-ap: Add sysfs attr, ap_config, to export mdev state s390/ap: Externalize AP bus specific bitmap reading function s390/mm: Re-enable the shared zeropage for !PV and !skeys KVM guests mm/userfaultfd: Do not place zeropages when zeropages are disallowed s390/expoline: Make modules use kernel expolines s390/nospec: Correct modules thunk offset calculation s390/boot: Do not rescue .vmlinux.relocs section s390/boot: Rework deployment of the kernel image ... |
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Joerg Roedel
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2bd5059c6c | Merge branches 'arm/renesas', 'arm/smmu', 'x86/amd', 'core' and 'x86/vt-d' into next | ||
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Shahab Vahedi
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f122668ddc |
ARC: Add eBPF JIT support
This will add eBPF JIT support to the 32-bit ARCv2 processors. The implementation is qualified by running the BPF tests on a Synopsys HSDK board with "ARC HS38 v2.1c at 500 MHz" as the 4-core CPU. The test_bpf.ko reports 2-10 fold improvements in execution time of its tests. For instance: test_bpf: #33 tcpdump port 22 jited:0 704 1766 2104 PASS test_bpf: #33 tcpdump port 22 jited:1 120 224 260 PASS test_bpf: #141 ALU_DIV_X: 4294967295 / 4294967295 = 1 jited:0 238 PASS test_bpf: #141 ALU_DIV_X: 4294967295 / 4294967295 = 1 jited:1 23 PASS test_bpf: #776 JMP32_JGE_K: all ... magnitudes jited:0 2034681 PASS test_bpf: #776 JMP32_JGE_K: all ... magnitudes jited:1 1020022 PASS Deployment and structure ------------------------ The related codes are added to "arch/arc/net": - bpf_jit.h -- The interface that a back-end translator must provide - bpf_jit_core.c -- Knows how to handle the input eBPF byte stream - bpf_jit_arcv2.c -- The back-end code that knows the translation logic The bpf_int_jit_compile() at the end of bpf_jit_core.c is the entrance to the whole process. Normally, the translation is done in one pass, namely the "normal pass". In case some relocations are not known during this pass, some data (arc_jit_data) is allocated for the next pass to come. This possible next (and last) pass is called the "extra pass". 1. Normal pass # The necessary pass 1a. Dry run # Get the whole JIT length, epilogue offset, etc. 1b. Emit phase # Allocate memory and start emitting instructions 2. Extra pass # Only needed if there are relocations to be fixed 2a. Patch relocations Support status -------------- The JIT compiler supports BPF instructions up to "cpu=v4". However, it does not yet provide support for: - Tail calls - Atomic operations - 64-bit division/remainder - BPF_PROBE_MEM* (exception table) The result of "test_bpf" test suite on an HSDK board is: hsdk-lnx# insmod test_bpf.ko test_suite=test_bpf test_bpf: Summary: 863 PASSED, 186 FAILED, [851/851 JIT'ed] All the failing test cases are due to the ones that were not JIT'ed. Categorically, they can be represented as: .-----------.------------.-------------. | test type | opcodes | # of cases | |-----------+------------+-------------| | atomic | 0xC3, 0xDB | 149 | | div64 | 0x37, 0x3F | 22 | | mod64 | 0x97, 0x9F | 15 | `-----------^------------+-------------| | (total) 186 | `-------------' Setup: build config ------------------- The following configs must be set to have a working JIT test: CONFIG_BPF_JIT=y CONFIG_BPF_JIT_ALWAYS_ON=y CONFIG_TEST_BPF=m The following options are not necessary for the tests module, but are good to have: CONFIG_DEBUG_INFO=y # prerequisite for below CONFIG_DEBUG_INFO_BTF=y # so bpftool can generate vmlinux.h CONFIG_FTRACE=y # CONFIG_BPF_SYSCALL=y # all these options lead to CONFIG_KPROBE_EVENTS=y # having CONFIG_BPF_EVENTS=y CONFIG_PERF_EVENTS=y # Some BPF programs provide data through /sys/kernel/debug: CONFIG_DEBUG_FS=y arc# mount -t debugfs debugfs /sys/kernel/debug Setup: elfutils --------------- The libdw.{so,a} library that is used by pahole for processing the final binary must come from elfutils 0.189 or newer. The support for ARCv2 [1] has been added since that version. [1] https://sourceware.org/git/?p=elfutils.git;a=commit;h=de3d46b3e7 Setup: pahole ------------- The line below in linux/scripts/Makefile.btf must be commented out: pahole-flags-$(call test-ge, $(pahole-ver), 121) += --btf_gen_floats Or else, the build will fail: $ make V=1 ... BTF .btf.vmlinux.bin.o pahole -J --btf_gen_floats \ -j --lang_exclude=rust \ --skip_encoding_btf_inconsistent_proto \ --btf_gen_optimized .tmp_vmlinux.btf Complex, interval and imaginary float types are not supported Encountered error while encoding BTF. ... BTFIDS vmlinux ./tools/bpf/resolve_btfids/resolve_btfids vmlinux libbpf: failed to find '.BTF' ELF section in vmlinux FAILED: load BTF from vmlinux: No data available This is due to the fact that the ARC toolchains generate "complex float" DIE entries in libgcc and at the moment, pahole can't handle such entries. Running the tests ----------------- host$ scp /bld/linux/lib/test_bpf.ko arc: arc # sysctl net.core.bpf_jit_enable=1 arc # insmod test_bpf.ko test_suite=test_bpf ... test_bpf: #1048 Staggered jumps: JMP32_JSLE_X jited:1 697811 PASS test_bpf: Summary: 863 PASSED, 186 FAILED, [851/851 JIT'ed] Acknowledgments --------------- - Claudiu Zissulescu for his unwavering support - Yuriy Kolerov for testing and troubleshooting - Vladimir Isaev for the pahole workaround - Sergey Matyukevich for paving the road by adding the interpreter support Signed-off-by: Shahab Vahedi <shahab@synopsys.com> Link: https://lore.kernel.org/r/20240430145604.38592-1-list+bpf@vahedi.org Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
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SeongJae Park
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14e70e4660 |
Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command
To update effective size quota of DAMOS schemes on DAMON sysfs file
interface, user should write 'update_schemes_effective_quotas' to the
kdamond 'state' file. But the document is mistakenly saying the input
string as 'update_schemes_effective_bytes'. Fix it (s/bytes/quotas/).
Link: https://lkml.kernel.org/r/20240503180318.72798-8-sj@kernel.org
Fixes:
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SeongJae Park
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da2a061888 |
Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file
The example usage of DAMOS filter sysfs files, specifically the part of
'matching' file writing for memcg type filter, is wrong. The intention is
to exclude pages of a memcg that already getting enough care from a given
scheme, but the example is setting the filter to apply the scheme to only
the pages of the memcg. Fix it.
Link: https://lkml.kernel.org/r/20240503180318.72798-7-sj@kernel.org
Fixes:
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Usama Arif
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db5b4f3253 |
cgroup: Add documentation for missing zswap memory.stat
This includes zswpin, zswpout and zswpwb. Signed-off-by: Usama Arif <usamaarif642@gmail.com> Acked-by: Nhat Pham <nphamcs@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20240502185307.3942173-2-usamaarif642@gmail.com> |
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David Gstir
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b85b253e23 |
docs: document DCP-backed trusted keys kernel params
Document the kernel parameters trusted.dcp_use_otp_key and trusted.dcp_skip_zk_test for DCP-backed trusted keys. Co-developed-by: Richard Weinberger <richard@nod.at> Signed-off-by: Richard Weinberger <richard@nod.at> Co-developed-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> Signed-off-by: David Gstir <david@sigma-star.at> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
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Will Deacon
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42e7ddbaf1 |
Merge branch 'for-next/perf' into for-next/core
* for-next/perf: (41 commits) arm64: Add USER_STACKTRACE support drivers/perf: hisi: hns3: Actually use devm_add_action_or_reset() drivers/perf: hisi: hns3: Fix out-of-bound access when valid event group drivers/perf: hisi_pcie: Fix out-of-bound access when valid event group perf/arm-spe: Assign parents for event_source device perf/arm-smmuv3: Assign parents for event_source device perf/arm-dsu: Assign parents for event_source device perf/arm-dmc620: Assign parents for event_source device perf/arm-ccn: Assign parents for event_source device perf/arm-cci: Assign parents for event_source device perf/alibaba_uncore: Assign parents for event_source device perf/arm_pmu: Assign parents for event_source devices perf/imx_ddr: Assign parents for event_source devices perf/qcom: Assign parents for event_source devices Documentation: qcom-pmu: Use /sys/bus/event_source/devices paths perf/riscv: Assign parents for event_source devices perf/thunderx2: Assign parents for event_source devices Documentation: thunderx2-pmu: Use /sys/bus/event_source/devices paths perf/xgene: Assign parents for event_source devices Documentation: xgene-pmu: Use /sys/bus/event_source/devices paths ... |
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Linus Torvalds
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1ab1a19db1 |
pci-v6.9-fixes-2
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmY61iEUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vwtwA//Zw8a27/+cHuciYCOYMIrjhucBUCc qHBdzDWTy+h3gkfbcRFfXs3XaIBhlGbtI1d0GG5FyMuqicxCsF/mCIyc2LSTMIUo 4201qVl/EGrNIBhOVcZtK+CFQmwmw1AaBdz7q4dS4/549xXGQ+/8DibAjfUlcDgC 2iIkcvfNW9Hj9n4tFezNSPLewGVgFY2yFpImLHZc2hAuSXQ0P0D9JEDUUVVIWg/c PSJQKKita/fxgKk8RRCTRdpVezAtd7QO8V4Ae5gGH+oho4nRvCO0kYGteglx7/ab ReNtfNUPJN9h7M5ZYpyiNp1aZTaMEp3P+gMsD9ohV0/+5MNNAiZhDLPguQaEy/2n ZiQh5K3vwQb2NStJXauiBqJ+NHeqf8m3mk76X3/hxma6wqDfEOsRvYaexwY+Wxfa I0tzjZF1LBepsoFyDJM/5S+3nCJoqaCUAy1ZbGXwsBAAzZHw6x9+ieJfJhnCOL96 kkNiNlxs8OJTTMl6F8W88NvMnhmCF0JxSOVTfxTaVwCaD6GwpnMNpXSEXqXPlVL1 jMRHr/hZ7JjHarELC/TGe1uUmPsBhIym862XV+7E+9uUbcWldwjBijuSZQ9zUpX2 UL0Cc2gJzyh/GwpeDVCyBGaINxzNVq3D5H6rYHlWQP+dp59stt/UBqBWJmerTHjy QQ+9+XS/CiElUL8= =EQN9 -----END PGP SIGNATURE----- Merge tag 'pci-v6.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull pci fixes from Bjorn Helgaas: - Update kernel-parameters doc to describe "pcie_aspm=off" more accurately (Bjorn Helgaas) - Restore the parent's (not the child's) ASPM state to the parent during resume, which fixes a reboot during resume (Kai-Heng Feng) * tag 'pci-v6.9-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: PCI/ASPM: Restore parent state to parent, child state to child PCI/ASPM: Clarify that pcie_aspm=off means leave ASPM untouched |
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Song Liu
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393fb313a2 |
watchdog: allow nmi watchdog to use raw perf event
NMI watchdog permanently consumes one hardware counters per CPU on the system. For systems that use many hardware counters, this causes more aggressive time multiplexing of perf events. OTOH, some CPUs (mostly Intel) support "ref-cycles" event, which is rarely used. Add kernel cmdline arg nmi_watchdog=rNNN to configure the watchdog to use raw event. For example, on Intel CPUs, we can use "r300" to configure the watchdog to use ref-cycles event. If the raw event does not work, fall back to use "cycles". [akpm@linux-foundation.org: fix kerneldoc] Link: https://lkml.kernel.org/r/20240430060236.1878002-2-song@kernel.org Signed-off-by: Song Liu <song@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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ed13c93b93 |
Docs/admin-guide/mm/damon/usage: update for young page type DAMOS filter
Update DAMON usage document for the newly added DAMOS filter type, 'young page'. Link: https://lkml.kernel.org/r/20240426195247.100306-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Honggyu Kim <honggyu.kim@sk.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Hildenbrand
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1bafe96e89 |
mm/khugepaged: replace page_mapcount() check by folio_likely_mapped_shared()
We want to limit the use of page_mapcount() to places where absolutely required, to prepare for kernel configs where we won't keep track of per-page mapcounts in large folios. khugepaged is one of the remaining "more challenging" page_mapcount() users, but we might be able to move away from page_mapcount() without resulting in a significant behavior change that would warrant special-casing based on kernel configs. In 2020, we first added support to khugepaged for collapsing COW-shared pages via commit |
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Yosry Ahmed
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c074e1467f |
mm: zswap: remove same_filled module params
These knobs offer more fine-grained control to userspace than needed and
directly expose/influence kernel implementation; remove them.
For disabling same_filled handling, there is no logical reason to refuse
storing same-filled pages more efficiently and opt for compression.
Scanning pages for patterns may be an argument, but the page contents will
be read into the CPU cache anyway during compression. Also, removing the
same_filled handling code does not move the needle significantly in terms
of performance anyway [1].
For disabling non_same_filled handling, it was added when the compressed
pages in zswap were not being properly charged to memcgs, as workloads
could escape the accounting with compression [2]. This is no longer the
case after commit
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Barry Song
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a14421ae2a |
mm: correct the docs for thp_fault_alloc and thp_fault_fallback
The documentation does not align with the code. In __do_huge_pmd_anonymous_page(), THP_FAULT_FALLBACK is incremented when mem_cgroup_charge() fails, despite the allocation succeeding, whereas THP_FAULT_ALLOC is only incremented after a successful charge. Link: https://lkml.kernel.org/r/20240412114858.407208-5-21cnbao@gmail.com Signed-off-by: Barry Song <v-songbaohua@oppo.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Chris Li <chrisl@kernel.org> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Kairui Song <kasong@tencent.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Barry Song
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42248b9d34 |
mm: add docs for per-order mTHP counters and transhuge_page ABI
This patch includes documentation for mTHP counters and an ABI file for sys-kernel-mm-transparent-hugepage, which appears to have been missing for some time. [v-songbaohua@oppo.com: fix the name and unexpected indentation] Link: https://lkml.kernel.org/r/20240415054538.17071-1-21cnbao@gmail.com Link: https://lkml.kernel.org/r/20240412114858.407208-4-21cnbao@gmail.com Signed-off-by: Barry Song <v-songbaohua@oppo.com> Reviewed-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Chris Li <chrisl@kernel.org> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Kairui Song <kasong@tencent.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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David Hildenbrand
|
658670607f |
Documentation/admin-guide/cgroup-v1/memory.rst: don't reference page_mapcount()
Let's stop talking about page_mapcount(). Link: https://lkml.kernel.org/r/20240409192301.907377-19-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Cc: Chris Zankel <chris@zankel.net> Cc: Hugh Dickins <hughd@google.com> Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Cc: Peter Xu <peterx@redhat.com> Cc: Richard Chang <richardycc@google.com> Cc: Rich Felker <dalias@libc.org> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Yin Fengwei <fengwei.yin@intel.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Bjorn Helgaas
|
2e0239d47d |
PCI/ASPM: Clarify that pcie_aspm=off means leave ASPM untouched
Previously we claimed "pcie_aspm=off" meant that ASPM would be disabled, which is wrong. Correct this to say that with "pcie_aspm=off", Linux doesn't touch any ASPM configuration at all. ASPM may have been enabled by firmware, and that will be left unchanged. See "aspm_support_enabled". Link: https://lore.kernel.org/r/20240429191821.691726-1-helgaas@kernel.org Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: David E. Box <david.e.box@linux.intel.com> |
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Andrea della Porta
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1279e8d0dc |
arm64: Add the arm64.no32bit_el0 command line option
Introducing the field 'el0' to the idreg-override for register ID_AA64PFR0_EL1. This field is also aliased to the new kernel command line option 'arm64.no32bit_el0' as a more recognizable and mnemonic name to disable the execution of 32 bit userspace applications (i.e. avoid Aarch32 execution state in EL0) from kernel command line. Link: https://lore.kernel.org/all/20240207105847.7739-1-andrea.porta@suse.com/ Signed-off-by: Andrea della Porta <andrea.porta@suse.com> Link: https://lore.kernel.org/r/20240429102833.6426-1-andrea.porta@suse.com Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Remington Brasga
|
da51bbcdba |
Docs: typos/spelling
Fix spelling and grammar in Docs descriptions Signed-off-by: Remington Brasga <rbrasga@uci.edu> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240429225527.2329-1-rbrasga@uci.edu |
||
|
Jacob Pan
|
be9be07b22 |
iommu/vt-d: Make posted MSI an opt-in command line option
Add a command line opt-in option for posted MSI if CONFIG_X86_POSTED_MSI=y. Also introduce a helper function for testing if posted MSI is supported on the platform. Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20240423174114.526704-12-jacob.jun.pan@linux.intel.com |
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Bingbu Cao
|
ba124c8cf3 |
media: Documentation: add Intel IPU6 ISYS driver admin-guide doc
This document mainly describe the functionality of IPU6 and IPU6 isys driver, and gives an example that how user can do imaging capture with tools. Signed-off-by: Bingbu Cao <bingbu.cao@intel.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Linus Torvalds
|
aec147c188 |
Misc fixes:
- Make the CPU_MITIGATIONS=n interaction with conflicting
mitigation-enabling boot parameters a bit saner.
- Re-enable CPU mitigations by default on non-x86
- Fix TDX shared bit propagation on mprotect()
- Fix potential show_regs() system hang when PKE
initialization is not fully finished yet.
- Add the 0x10-0x1f model IDs to the Zen5 range
- Harden #VC instruction emulation some more
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2024-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
- Make the CPU_MITIGATIONS=n interaction with conflicting
mitigation-enabling boot parameters a bit saner.
- Re-enable CPU mitigations by default on non-x86
- Fix TDX shared bit propagation on mprotect()
- Fix potential show_regs() system hang when PKE initialization
is not fully finished yet.
- Add the 0x10-0x1f model IDs to the Zen5 range
- Harden #VC instruction emulation some more
* tag 'x86-urgent-2024-04-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu: Ignore "mitigations" kernel parameter if CPU_MITIGATIONS=n
cpu: Re-enable CPU mitigations by default for !X86 architectures
x86/tdx: Preserve shared bit on mprotect()
x86/cpu: Fix check for RDPKRU in __show_regs()
x86/CPU/AMD: Add models 0x10-0x1f to the Zen5 range
x86/sev: Check for MWAITX and MONITORX opcodes in the #VC handler
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Baoquan He
|
b0f970c50d |
Documentation: kdump: clean up the outdated description
After commit
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Sergey Senozhatsky
|
34efe1c3b6 |
zram: add max_pages param to recompression
Introduce "max_pages" param to recompress device attribute which sets an upper limit on the number of entries (pages) zram attempts to recompress (in this particular recompression call). S/W recompression can be quite expensive so limiting the number of pages recompress touches can be quite helpful. Link: https://lkml.kernel.org/r/20240329094050.2815699-1-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Acked-by: Brian Geffon <bgeffon@google.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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York Jasper Niebuhr
|
ba42b524a0 |
mm: init_mlocked_on_free_v3
Implements the "init_mlocked_on_free" boot option. When this boot option
is enabled, any mlock'ed pages are zeroed on free. If
the pages are munlock'ed beforehand, no initialization takes place.
This boot option is meant to combat the performance hit of
"init_on_free" as reported in commit
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Matthew Wilcox (Oracle)
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4dc7d37370 |
remove references to page->flags in documentation
Mostly rewording, but remove entirely the copy of page_fixed_fake_head() in the documentation; we can refer people to the actual source if necessary. Link: https://lkml.kernel.org/r/20240326171045.410737-10-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baolin Wang
|
353dc18784 |
docs: hugetlbpage.rst: add hugetlb migration description
Add some description of the hugetlb migration strategy. Link: https://lkml.kernel.org/r/63fb16e7a4ebc5cb69ce655af86e29b2d8e9ba34.1709719720.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: David Hildenbrand <david@redhat.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Naoya Horiguchi <nao.horiguchi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Suren Baghdasaryan
|
22d407b164 |
lib: add allocation tagging support for memory allocation profiling
Introduce CONFIG_MEM_ALLOC_PROFILING which provides definitions to easily instrument memory allocators. It registers an "alloc_tags" codetag type with /proc/allocinfo interface to output allocation tag information when the feature is enabled. CONFIG_MEM_ALLOC_PROFILING_DEBUG is provided for debugging the memory allocation profiling instrumentation. Memory allocation profiling can be enabled or disabled at runtime using /proc/sys/vm/mem_profiling sysctl when CONFIG_MEM_ALLOC_PROFILING_DEBUG=n. CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT enables memory allocation profiling by default. [surenb@google.com: Documentation/filesystems/proc.rst: fix allocinfo title] Link: https://lkml.kernel.org/r/20240326073813.727090-1-surenb@google.com [surenb@google.com: do limited memory accounting for modules with ARCH_NEEDS_WEAK_PER_CPU] Link: https://lkml.kernel.org/r/20240402180933.1663992-2-surenb@google.com [klarasmodin@gmail.com: explicitly include irqflags.h in alloc_tag.h] Link: https://lkml.kernel.org/r/20240407133252.173636-1-klarasmodin@gmail.com [surenb@google.com: fix alloc_tag_init() to prevent passing NULL to PTR_ERR()] Link: https://lkml.kernel.org/r/20240417003349.2520094-1-surenb@google.com Link: https://lkml.kernel.org/r/20240321163705.3067592-14-surenb@google.com Signed-off-by: Suren Baghdasaryan <surenb@google.com> Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev> Signed-off-by: Klara Modin <klarasmodin@gmail.com> Tested-by: Kees Cook <keescook@chromium.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alex Gaynor <alex.gaynor@gmail.com> Cc: Alice Ryhl <aliceryhl@google.com> Cc: Andreas Hindborg <a.hindborg@samsung.com> Cc: Benno Lossin <benno.lossin@proton.me> Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Christoph Lameter <cl@linux.com> Cc: Dennis Zhou <dennis@kernel.org> Cc: Gary Guo <gary@garyguo.net> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Wedson Almeida Filho <wedsonaf@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sean Christopherson
|
ce0abef6a1 |
cpu: Ignore "mitigations" kernel parameter if CPU_MITIGATIONS=n
Explicitly disallow enabling mitigations at runtime for kernels that were built with CONFIG_CPU_MITIGATIONS=n, as some architectures may omit code entirely if mitigations are disabled at compile time. E.g. on x86, a large pile of Kconfigs are buried behind CPU_MITIGATIONS, and trying to provide sane behavior for retroactively enabling mitigations is extremely difficult, bordering on impossible. E.g. page table isolation and call depth tracking require build-time support, BHI mitigations will still be off without additional kernel parameters, etc. [ bp: Touchups. ] Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240420000556.2645001-3-seanjc@google.com |
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Maíra Canal
|
b413f9cd4c |
mm: Update shuffle documentation to match its current state
Commit
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Thomas Weißschuh
|
8af2d1ab78 |
admin-guide/hw-vuln/core-scheduling: fix return type of PR_SCHED_CORE_GET
sched_core_share_pid() copies the cookie to userspace with
put_user(id, (u64 __user *)uaddr), expecting 64 bits of space.
The "unsigned long" datatype that is documented in core-scheduling.rst
however is only 32 bits large on 32 bit architectures.
Document "unsigned long long" as the correct data type that is always
64bits large.
This matches what the selftest cs_prctl_test.c has been doing all along.
Fixes:
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Vincent Guittot
|
97450eb909 |
sched/pelt: Remove shift of thermal clock
The optional shift of the clock used by thermal/hw load avg has been introduced to handle case where the signal was not always a high frequency hw signal. Now that cpufreq provides a signal for firmware and SW pressure, we can remove this exception and always keep this PELT signal aligned with other signals. Mark sysctl_sched_migration_cost boot parameter as deprecated Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Lukasz Luba <lukasz.luba@arm.com> Reviewed-by: Qais Yousef <qyousef@layalina.io> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20240326091616.3696851-6-vincent.guittot@linaro.org |
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Greg Kroah-Hartman
|
660a708098 |
Merge 6.9-rc5 into tty-next
We want the tty fixes in here as well, and it resolves a merge conflict in: drivers/tty/serial/serial_core.c as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linus Torvalds
|
4d2008430c |
A set of updates from Thorsten to his (new) guide to verifying bugs and
tracking down regressions. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmYmeN4PHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YtzcH/1plJvgfTDMWZWoOgNuPSiExWFgqoWk3KyDw hqBfQ0p5QvTnC/rQx8mgGP3EqUXegwFHormRT2oSNyCSBHBSMdJU5ZT/WOp4rDpa NvjM7FurBhb3b83ieottl6dDxnbUiRy6+z/uayEeV03KEolL7/nljfBozg9282Ep p6cc4D5zwNcYdeqEom32AVOPFUUtQAvPhGj4OUHBwjzn7WF2lfzb4z4RudmsyE5E 1Whd35HEOpKsNlosy9XJ8ZP/QHAb0Nkwdg2irT71lZ+37nUX/KgMxFuJUxviYI9m 4jtZsjRew7RS/EUtwbUsyD4DTXla0N2H+//ZF5AatRz8RuQKZgQ= =A/2u -----END PGP SIGNATURE----- Merge tag 'docs-6.9-fixes2' of git://git.lwn.net/linux Pull documentation fixes from Jonathan Corbet: "A set of updates from Thorsten to his (new) guide to verifying bugs and tracking down regressions" * tag 'docs-6.9-fixes2' of git://git.lwn.net/linux: docs: verify/bisect: stable regressions: first stable, then mainline docs: verify/bisect: describe how to use a build host docs: verify/bisect: explain testing reverts, patches and newer code docs: verify/bisect: proper headlines and more spacing docs: verify/bisect: add and fetch stable branches ahead of time docs: verify/bisect: use git switch, tag kernel, and various fixes |
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Jonathan Cameron
|
556da13434 |
Documentation: qcom-pmu: Use /sys/bus/event_source/devices paths
To allow setting an appropriate parent for the struct pmu device remove existing references to /sys/devices/ path. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240412161057.14099-14-Jonathan.Cameron@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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|
Jonathan Cameron
|
90b4a1a927 |
Documentation: thunderx2-pmu: Use /sys/bus/event_source/devices paths
To allow setting an appropriate parent for the struct pmu device remove existing references to /sys/devices/ path. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240412161057.14099-11-Jonathan.Cameron@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Jonathan Cameron
|
867ba6d204 |
Documentation: xgene-pmu: Use /sys/bus/event_source/devices paths
To allow setting an appropriate parent for the struct pmu device remove existing references to /sys/devices/ path. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240412161057.14099-9-Jonathan.Cameron@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Jonathan Cameron
|
eff6af5313 |
Documentation: hns-pmu: Use /sys/bus/event_source/devices paths
To allow setting an appropriate parent for the struct pmu device remove existing references to /sys/devices/ path. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240412161057.14099-5-Jonathan.Cameron@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Jonathan Cameron
|
d0412b6ecb |
Documentation: hisi-pmu: Drop reference to /sys/devices path
Having assigned a parent to the device, the suggested path is no longer valid. As /sys/bus/event_sources based path is also provided, simply drop mention of alternative. Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240412161057.14099-3-Jonathan.Cameron@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Xiu Jianfeng
|
c9169291be |
docs, cgroup: add entries for pids to cgroup-v2.rst
This patch add two entries (pids.peak and pids.events) for pids controller, and also update pids.current because it's on non-root. Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Alexander Gordeev
|
54f2ecc318 |
s390: Map kernel at fixed location when KASLR is disabled
Since kernel virtual and physical address spaces are uncoupled the kernel is mapped at the top of the virtual address space in case KASLR is disabled. That does not pose any issue with regard to the kernel booting and operation, but makes it difficult to use a generated vmlinux with some debugging tools (e.g. gdb), because the exact location of the kernel image in virtual memory is unknown. Make that location known and introduce CONFIG_KERNEL_IMAGE_BASE configuration option. A custom CONFIG_KERNEL_IMAGE_BASE value that would break the virtual memory layout leads to a build error. The kernel image size is defined by KERNEL_IMAGE_SIZE macro and set to 512 MB, by analogy with x86. Suggested-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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Mikulas Patocka
|
5268de78e1 |
dm-crypt: add the optional "high_priority" flag
When WQ_HIGHPRI was used for the dm-crypt kcryptd workqueue it was
reported that dm-crypt performs badly when the system is loaded[1].
Because of reports of audio skipping, dm-crypt stopped using
WQ_HIGHPRI with commit
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Uladzislau Rezki (Sony)
|
988f569ae0 |
rcu: Reduce synchronize_rcu() latency
A call to a synchronize_rcu() can be optimized from a latency
point of view. Workloads which depend on this can benefit of it.
The delay of wakeme_after_rcu() callback, which unblocks a waiter,
depends on several factors:
- how fast a process of offloading is started. Combination of:
- !CONFIG_RCU_NOCB_CPU/CONFIG_RCU_NOCB_CPU;
- !CONFIG_RCU_LAZY/CONFIG_RCU_LAZY;
- other.
- when started, invoking path is interrupted due to:
- time limit;
- need_resched();
- if limit is reached.
- where in a nocb list it is located;
- how fast previous callbacks completed;
Example:
1. On our embedded devices i can easily trigger the scenario when
it is a last in the list out of ~3600 callbacks:
<snip>
<...>-29 [001] d..1. 21950.145313: rcu_batch_start: rcu_preempt CBs=3613 bl=28
...
<...>-29 [001] ..... 21950.152578: rcu_invoke_callback: rcu_preempt rhp=00000000b2d6dee8 func=__free_vm_area_struct.cfi_jt
<...>-29 [001] ..... 21950.152579: rcu_invoke_callback: rcu_preempt rhp=00000000a446f607 func=__free_vm_area_struct.cfi_jt
<...>-29 [001] ..... 21950.152580: rcu_invoke_callback: rcu_preempt rhp=00000000a5cab03b func=__free_vm_area_struct.cfi_jt
<...>-29 [001] ..... 21950.152581: rcu_invoke_callback: rcu_preempt rhp=0000000013b7e5ee func=__free_vm_area_struct.cfi_jt
<...>-29 [001] ..... 21950.152582: rcu_invoke_callback: rcu_preempt rhp=000000000a8ca6f9 func=__free_vm_area_struct.cfi_jt
<...>-29 [001] ..... 21950.152583: rcu_invoke_callback: rcu_preempt rhp=000000008f162ca8 func=wakeme_after_rcu.cfi_jt
<...>-29 [001] d..1. 21950.152625: rcu_batch_end: rcu_preempt CBs-invoked=3612 idle=....
<snip>
2. We use cpuset/cgroup to classify tasks and assign them into
different cgroups. For example "backgrond" group which binds tasks
only to little CPUs or "foreground" which makes use of all CPUs.
Tasks can be migrated between groups by a request if an acceleration
is needed.
See below an example how "surfaceflinger" task gets migrated.
Initially it is located in the "system-background" cgroup which
allows to run only on little cores. In order to speed it up it
can be temporary moved into "foreground" cgroup which allows
to use big/all CPUs:
cgroup_attach_task():
-> cgroup_migrate_execute()
-> cpuset_can_attach()
-> percpu_down_write()
-> rcu_sync_enter()
-> synchronize_rcu()
-> now move tasks to the new cgroup.
-> cgroup_migrate_finish()
<snip>
rcuop/1-29 [000] ..... 7030.528570: rcu_invoke_callback: rcu_preempt rhp=00000000461605e0 func=wakeme_after_rcu.cfi_jt
PERFD-SERVER-1855 [000] d..1. 7030.530293: cgroup_attach_task: dst_root=3 dst_id=22 dst_level=1 dst_path=/foreground pid=1900 comm=surfaceflinger
TimerDispatch-2768 [002] d..5. 7030.537542: sched_migrate_task: comm=surfaceflinger pid=1900 prio=98 orig_cpu=0 dest_cpu=4
<snip>
"Boosting a task" depends on synchronize_rcu() latency:
- first trace shows a completion of synchronize_rcu();
- second shows attaching a task to a new group;
- last shows a final step when migration occurs.
3. To address this drawback, maintain a separate track that consists
of synchronize_rcu() callers only. After completion of a grace period
users are deferred to a dedicated worker to process requests.
4. This patch reduces the latency of synchronize_rcu() approximately
by ~30-40% on synthetic tests. The real test case, camera launch time,
shows(time is in milliseconds):
1-run 542 vs 489 improvement 9%
2-run 540 vs 466 improvement 13%
3-run 518 vs 468 improvement 9%
4-run 531 vs 457 improvement 13%
5-run 548 vs 475 improvement 13%
6-run 509 vs 484 improvement 4%
Synthetic test(no "noise" from other callbacks):
Hardware: x86_64 64 CPUs, 64GB of memory
Linux-6.6
- 10K tasks(simultaneous);
- each task does(1000 loops)
synchronize_rcu();
kfree(p);
default: CONFIG_RCU_NOCB_CPU: takes 54 seconds to complete all users;
patch: CONFIG_RCU_NOCB_CPU: takes 35 seconds to complete all users.
Running 60K gives approximately same results on my setup. Please note
it is without any interaction with another type of callbacks, otherwise
it will impact a lot a default case.
5. By default it is disabled. To enable this perform one of the
below sequence:
echo 1 > /sys/module/rcutree/parameters/rcu_normal_wake_from_gp
or pass a boot parameter "rcutree.rcu_normal_wake_from_gp=1"
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Frederic Weisbecker <frederic@kernel.org>
Co-developed-by: Neeraj Upadhyay (AMD) <neeraj.iitr10@gmail.com>
Signed-off-by: Neeraj Upadhyay (AMD) <neeraj.iitr10@gmail.com>
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
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Thorsten Leemhuis
|
8d939ae349 |
docs: verify/bisect: stable regressions: first stable, then mainline
Rearrange the instructions so that readers facing a regression within a stable or longterm series first test its latest release before testing mainline. This is less scary for some people. It also reduces the chance that something goes sideways for readers that compile their first kernel, as mainline can cause slightly more trouble. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/efd3cb9c68db450091021326bf9c334553df0ec2.1712647788.git.linux@leemhuis.info |
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Thorsten Leemhuis
|
2bcfd71e8d |
docs: verify/bisect: describe how to use a build host
Describe how to build kernels on another system (with and without cross-compiling), as building locally can be quite painfully on some slow systems. This is done in an add-on section, as it would make the step-by-step guide to complicated if this special case would be described there. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/288160cb4769e46a3280250ca71da0abc4aa002d.1712647788.git.linux@leemhuis.info |
||
|
Thorsten Leemhuis
|
a421835a2a |
docs: verify/bisect: explain testing reverts, patches and newer code
Rename 'Supplementary tasks' to 'Complementary tasks' while introducing a section 'Optional tasks: test reverts, patches, or later versions': the latter is something readers occasionally will have to do after reporting a bug and thus is best covered here. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/dacf26a4c48e9e8f04ecbc77e0a74c9b2a6a1103.1712647788.git.linux@leemhuis.info |
||
|
Thorsten Leemhuis
|
453de3207f |
docs: verify/bisect: proper headlines and more spacing
Various small improvements and fixes: * Separate ref links from their target with a space for better readability. * Add a proper heading for the note at the end of the step-by-step guide. * Use proper 3rd and 4th level headlines in the reference section and add short intros for the 2nd level headlines that lacked one. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/f59f0f235a2192ed93899a7338153e4cb71075f0.1712647788.git.linux@leemhuis.info |
||
|
Thorsten Leemhuis
|
932c9a5398 |
docs: verify/bisect: add and fetch stable branches ahead of time
Add and fetch all required stable branches ahead of time. This fixes a bug, as readers that wanted to bisect a regression within a stable or longterm series otherwise did not have them available at the right time. This way also matches the flow somewhat better and avoids some "if you haven't already added it" phrases that otherwise become necessary in future changes. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/57dcf312959476abe6151bf3d35eb79e3e9a83d1.1712647788.git.linux@leemhuis.info |
||
|
Thorsten Leemhuis
|
abbb99301e |
docs: verify/bisect: use git switch, tag kernel, and various fixes
Various small improvements and fixes: * Use the more modern 'git switch' instead of 'git checkout', which makes it more obvious what's happening (among others due to the --discard-changes parameter that is more clear than --force). * Provide a hint how a mainline version number and one from a stable series look like. * When trying to validate the bisection result with a revert, add a special tag to facilitate the identification. * Sync version numbers used in various examples for consistency: stick to 6.0.13, 6.0.15, and 6.1.5. * Fix a few typos and oddities. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/85029aa004447b0eeb5043fb014630f2acafacec.1712647788.git.linux@leemhuis.info |
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|
Pasha Tatashin
|
212c5c078d |
iommu: account IOMMU allocated memory
In order to be able to limit the amount of memory that is allocated by IOMMU subsystem, the memory must be accounted. Account IOMMU as part of the secondary pagetables as it was discussed at LPC. The value of SecPageTables now contains mmeory allocation by IOMMU and KVM. There is a difference between GFP_ACCOUNT and what NR_IOMMU_PAGES shows. GFP_ACCOUNT is set only where it makes sense to charge to user processes, i.e. IOMMU Page Tables, but there more IOMMU shared data that should not really be charged to a specific process. Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com> Acked-by: David Rientjes <rientjes@google.com> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20240413002522.1101315-12-pasha.tatashin@soleen.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
||
|
Josh Poimboeuf
|
36d4fe147c |
x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=auto
Unlike most other mitigations' "auto" options, spectre_bhi=auto only mitigates newer systems, which is confusing and not particularly useful. Remove it. Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Nikolay Borisov <nik.borisov@suse.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/412e9dc87971b622bbbaf64740ebc1f140bff343.1712813475.git.jpoimboe@kernel.org |
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|
Sreenath Vijayan
|
1b743485e2 |
tty/sysrq: Replay kernel log messages on consoles via sysrq
When terminal is unresponsive, one cannot use dmesg to view the printk ring buffer messages. Also, syslog services may be disabled, especially on embedded systems, to check the messages after a reboot. In this scenario, replay the messages in printk ring buffer on consoles via sysrq by pressing sysrq+R. The console loglevel will determine which all kernel log messages are displayed. The messages will be displayed only when console_trylock() succeeds. Users could repeat the sysrq key when it fails. If the owner of console subsystem lock is stuck, repeating the key won't work. Suggested-by: Petr Mladek <pmladek@suse.com> Signed-off-by: Shimoyashiki Taichi <taichi.shimoyashiki@sony.com> Reviewed-by: John Ogness <john.ogness@linutronix.de> Signed-off-by: Sreenath Vijayan <sreenath.vijayan@sony.com> Link: https://lore.kernel.org/r/cc3b9b1aae60a236c6aed1dc7b0ffa2c7cd1f183.1710220326.git.sreenath.vijayan@sony.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Josh Poimboeuf
|
5f882f3b0a |
x86/bugs: Clarify that syscall hardening isn't a BHI mitigation
While syscall hardening helps prevent some BHI attacks, there's still
other low-hanging fruit remaining. Don't classify it as a mitigation
and make it clear that the system may still be vulnerable if it doesn't
have a HW or SW mitigation enabled.
Fixes:
|
||
|
Josh Poimboeuf
|
dfe648903f |
x86/bugs: Fix BHI documentation
Fix up some inaccuracies in the BHI documentation.
Fixes:
|
||
|
Karel Balej
|
9e66f74ce7 |
docs: *-regressions.rst: unify quoting, add missing word
Quoting of the '"no regressions" rule' expression differs between occurrences, sometimes being presented as '"no regressions rule"'. Unify the quoting using the first form which seems semantically correct or is at least used dominantly, albeit marginally. One of the occurrences is obviously missing the 'rule' part -- add it. Signed-off-by: Karel Balej <balejk@matfyz.cz> Reviewed-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240328194342.11760-2-balejk@matfyz.cz |
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|
Tony Lindgren
|
5c3a766e9f |
Documentation: kernel-parameters: Add DEVNAME:0.0 format for serial ports
Document the console option for DEVNAME:0.0 style addressing for serial ports. Suggested-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Dhruva Gole <d-gole@ti.com> Link: https://lore.kernel.org/r/20240327110021.59793-8-tony@atomide.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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|
Linus Torvalds
|
2bb69f5fc7 |
x86 mitigations for the native BHI hardware vulnerabilty:
Branch History Injection (BHI) attacks may allow a malicious application to influence indirect branch prediction in kernel by poisoning the branch history. eIBRS isolates indirect branch targets in ring0. The BHB can still influence the choice of indirect branch predictor entry, and although branch predictor entries are isolated between modes when eIBRS is enabled, the BHB itself is not isolated between modes. Add mitigations against it either with the help of microcode or with software sequences for the affected CPUs. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmYUKPMTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYofT8EACJJix+GzGUcJjOvfWFZcxwziY152hO 5XSzHOZZL6oz5Yk/Rye/S9RVTN7aDjn1CEvI0cD/ULxaTP869sS9dDdUcHhEJ//5 6hjqWsWiKc1QmLjBy3Pcb97GZHQXM5a9D1f6jXnJD+0FMLbQHpzSEBit0H4tv/TC 75myGgYihvUbhN9/bL10M5fz+UADU42nChvPWDMr9ukljjCqa46tPTmKUIAW5TWj /xsyf+Nk+4kZpdaidKGhpof6KCV2rNeevvzUGN8Pv5y13iAmvlyplqTcQ6dlubnZ CuDX5Ji9spNF9WmhKpLgy5N+Ocb64oVHov98N2zw1sT1N8XOYcSM0fBj7SQIFURs L7T4jBZS+1c3ZGJPPFWIaGjV8w1ZMhelglwJxjY7ZgRD6fK3mwRx/ks54J8H4HjE FbirXaZLeKlscDIOKtnxxKoIGwpdGwLKQYi/wEw7F9NhCLSj9wMia+j3uYIUEEHr 6xEiYEtyjcV3ocxagH7eiHyrasOKG64vjx2h1XodusBA2Wrvgm/jXlchUu+wb6B4 LiiZJt+DmOdQ1h5j3r2rt3hw7+nWa7kyq34qfN6NSUCHiedp6q7BClueSaKiOCGk RoNibNiS+CqaxwGxj/RGuvajEJeEMCsLuCxzT3aeaDBsqscW6Ka/HkGA76Tpb5nJ E3JyjYE7AlG4rw== =W0W3 -----END PGP SIGNATURE----- Merge tag 'nativebhi' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mitigations from Thomas Gleixner: "Mitigations for the native BHI hardware vulnerabilty: Branch History Injection (BHI) attacks may allow a malicious application to influence indirect branch prediction in kernel by poisoning the branch history. eIBRS isolates indirect branch targets in ring0. The BHB can still influence the choice of indirect branch predictor entry, and although branch predictor entries are isolated between modes when eIBRS is enabled, the BHB itself is not isolated between modes. Add mitigations against it either with the help of microcode or with software sequences for the affected CPUs" [ This also ends up enabling the full mitigation by default despite the system call hardening, because apparently there are other indirect calls that are still sufficiently reachable, and the 'auto' case just isn't hardened enough. We'll have some more inevitable tweaking in the future - Linus ] * tag 'nativebhi' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: KVM: x86: Add BHI_NO x86/bhi: Mitigate KVM by default x86/bhi: Add BHI mitigation knob x86/bhi: Enumerate Branch History Injection (BHI) bug x86/bhi: Define SPEC_CTRL_BHI_DIS_S x86/bhi: Add support for clearing branch history at syscall entry x86/syscall: Don't force use of indirect calls for system calls x86/bugs: Change commas to semicolons in 'spectre_v2' sysfs file |
||
|
I Hsin Cheng
|
a24e3b7d27 |
docs: cgroup-v1: Fix description for css_online
The original description refers to the comment on cgroup_for_each_descendant_pre() for more details. However, the macro cgroup_for_each_descendant_pre() no longer exist, we replace it with the corresponding macro cgroup_for_each_live_descendant_pre(). Signed-off-by: I Hsin Cheng <richard120310@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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|
Pawan Gupta
|
95a6ccbdc7 |
x86/bhi: Mitigate KVM by default
BHI mitigation mode spectre_bhi=auto does not deploy the software mitigation by default. In a cloud environment, it is a likely scenario where userspace is trusted but the guests are not trusted. Deploying system wide mitigation in such cases is not desirable. Update the auto mode to unconditionally mitigate against malicious guests. Deploy the software sequence at VMexit in auto mode also, when hardware mitigation is not available. Unlike the force =on mode, software sequence is not deployed at syscalls in auto mode. Suggested-by: Alexandre Chartre <alexandre.chartre@oracle.com> Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org> |
||
|
Pawan Gupta
|
ec9404e40e |
x86/bhi: Add BHI mitigation knob
Branch history clearing software sequences and hardware control
BHI_DIS_S were defined to mitigate Branch History Injection (BHI).
Add cmdline spectre_bhi={on|off|auto} to control BHI mitigation:
auto - Deploy the hardware mitigation BHI_DIS_S, if available.
on - Deploy the hardware mitigation BHI_DIS_S, if available,
otherwise deploy the software sequence at syscall entry and
VMexit.
off - Turn off BHI mitigation.
The default is auto mode which does not deploy the software sequence
mitigation. This is because of the hardening done in the syscall
dispatch path, which is the likely target of BHI.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
|
||
|
Martin Tůma
|
1fc207da3e |
media: admin-guide: Fix mgb4 driver documentation structure
Fix the mgb4 driver documentation structure that breaks the "Video4Linux (V4L) driver-specific documentation" outline. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
||
|
Weiji Wang
|
e9c44c1bea |
docs: zswap: fix shell command format
Format the shell commands as code block to keep the documentation in the same style Signed-off-by: Weiji Wang <nebclllo0444@gmail.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240319114253.2647-1-nebclllo0444@gmail.com |
||
|
Vitaly Chikunov
|
b75d85218f |
tracing: Fix documentation on tp_printk cmdline option
kernel-parameters.txt incorrectly states that workings of
kernel.tracepoint_printk sysctl depends on "tracepoint_printk kernel
cmdline option", this is a bit misleading for new users since the actual
cmdline option name is tp_printk.
Fixes:
|
||
|
Waiman Long
|
20d46283f5 |
cgroup, docs: Clarify limitation of RT processes with cgroup v2 cpu controller
The limitation that all RT processes have to be in the root cgroup before enabling cpu controller only applies if the CONFIG_RT_GROUP_SCHED option is enabled in the running kernel. If a kernel does not have CONFIG_RT_GROUP_SCHED enabled, RT processes can exist in a non-root cgroup even when cpu controller is enabled. CPU sharing of RT processes will not be under cgroup control, but other resources like memory can be. Clarify this limitation to avoid confusion to users that are using cgroup v2. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Linus Torvalds
|
dba89d1b81 |
A handful of late-arriving documentation fixes and enhancements.
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmX6tp4ACgkQF0NaE2wM flgzWQf/VV3cQmOGjgegxSyi//kq5jmy6T8trYd4jeIicYFxAW1Xjq9cO7iEFTQZ N4efTnqo0kku/HW/3wMgoznDEise6z8E/RpbuS9pCBkCj+a4vnFP/4IemDlb58RU oA0bgClk73b2xbF2x+btYLBmzszikSzGLD9CQkBHDanVV3FhipbrIRUI2qjK+F2L /OWHQ02n3g7u7xuK3Fn7GMCQ8z8ZKM5le4Tlip4y2VvHmacLJ6tgXl8phodK1HPq NpHRDUDzZnYVHeP9BaH66Z0eddzA6v74kpKoobk5ybbYEfS3VeBJzXl63C+NW/oG u9xpWI+sNWbrPDfTtiCVaKu4F6RoKg== =y1I0 -----END PGP SIGNATURE----- Merge tag 'docs-6.9-2' of git://git.lwn.net/linux Pull more documentation updates from Jonathan Corbet: "A handful of late-arriving documentation fixes and enhancements" * tag 'docs-6.9-2' of git://git.lwn.net/linux: docs: verify/bisect: remove a level of indenting docs: verify/bisect: drop 'v' prefix, EOL aspect, and assorted fixes docs: verify/bisect: check taint flag docs: verify/bisect: improve install instructions docs: handling-regressions.rst: Update regzbot command fixed-by to fix docs: *-regressions.rst: Add colon to regzbot commands doc: Fix typo in admin-guide/cifs/introduction.rst README: Fix spelling |
||
|
Linus Torvalds
|
ad584d73a2 |
Tracing updates for 6.9:
Main user visible change:
- User events can now have "multi formats"
The current user events have a single format. If another event is created
with a different format, it will fail to be created. That is, once an
event name is used, it cannot be used again with a different format. This
can cause issues if a library is using an event and updates its format.
An application using the older format will prevent an application using
the new library from registering its event.
A task could also DOS another application if it knows the event names, and
it creates events with different formats.
The multi-format event is in a different name space from the single
format. Both the event name and its format are the unique identifier.
This will allow two different applications to use the same user event name
but with different payloads.
- Added support to have ftrace_dump_on_oops dump out instances and
not just the main top level tracing buffer.
Other changes:
- Add eventfs_root_inode
Only the root inode has a dentry that is static (never goes away) and
stores it upon creation. There's no reason that the thousands of other
eventfs inodes should have a pointer that never gets set in its
descriptor. Create a eventfs_root_inode desciptor that has a eventfs_inode
descriptor and a dentry pointer, and only the root inode will use this.
- Added WARN_ON()s in eventfs
There's some conditionals remaining in eventfs that should never be hit,
but instead of removing them, add WARN_ON() around them to make sure that
they are never hit.
- Have saved_cmdlines allocation also include the map_cmdline_to_pid array
The saved_cmdlines structure allocates a large amount of data to hold its
mappings. Within it, it has three arrays. Two are already apart of it:
map_pid_to_cmdline[] and saved_cmdlines[]. More memory can be saved by
also including the map_cmdline_to_pid[] array as well.
- Restructure __string() and __assign_str() macros used in TRACE_EVENT().
Dynamic strings in TRACE_EVENT() are declared with:
__string(name, source)
And assigned with:
__assign_str(name, source)
In the tracepoint callback of the event, the __string() is used to get the
size needed to allocate on the ring buffer and __assign_str() is used to
copy the string into the ring buffer. There's a helper structure that is
created in the TRACE_EVENT() macro logic that will hold the string length
and its position in the ring buffer which is created by __string().
There are several trace events that have a function to create the string
to save. This function is executed twice. Once for __string() and again
for __assign_str(). There's no reason for this. The helper structure could
also save the string it used in __string() and simply copy that into
__assign_str() (it also already has its length).
By using the structure to store the source string for the assignment, it
means that the second argument to __assign_str() is no longer needed.
It will be removed in the next merge window, but for now add a warning if
the source string given to __string() is different than the source string
given to __assign_str(), as the source to __assign_str() isn't even used
and will be going away.
- Added checks to make sure that the source of __string() is also the
source of __assign_str() so that it can be safely removed in the next
merge window.
Included fixes that the above check found.
- Other minor clean ups and fixes
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Merge tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
"Main user visible change:
- User events can now have "multi formats"
The current user events have a single format. If another event is
created with a different format, it will fail to be created. That
is, once an event name is used, it cannot be used again with a
different format. This can cause issues if a library is using an
event and updates its format. An application using the older format
will prevent an application using the new library from registering
its event.
A task could also DOS another application if it knows the event
names, and it creates events with different formats.
The multi-format event is in a different name space from the single
format. Both the event name and its format are the unique
identifier. This will allow two different applications to use the
same user event name but with different payloads.
- Added support to have ftrace_dump_on_oops dump out instances and
not just the main top level tracing buffer.
Other changes:
- Add eventfs_root_inode
Only the root inode has a dentry that is static (never goes away)
and stores it upon creation. There's no reason that the thousands
of other eventfs inodes should have a pointer that never gets set
in its descriptor. Create a eventfs_root_inode desciptor that has a
eventfs_inode descriptor and a dentry pointer, and only the root
inode will use this.
- Added WARN_ON()s in eventfs
There's some conditionals remaining in eventfs that should never be
hit, but instead of removing them, add WARN_ON() around them to
make sure that they are never hit.
- Have saved_cmdlines allocation also include the map_cmdline_to_pid
array
The saved_cmdlines structure allocates a large amount of data to
hold its mappings. Within it, it has three arrays. Two are already
apart of it: map_pid_to_cmdline[] and saved_cmdlines[]. More memory
can be saved by also including the map_cmdline_to_pid[] array as
well.
- Restructure __string() and __assign_str() macros used in
TRACE_EVENT()
Dynamic strings in TRACE_EVENT() are declared with:
__string(name, source)
And assigned with:
__assign_str(name, source)
In the tracepoint callback of the event, the __string() is used to
get the size needed to allocate on the ring buffer and
__assign_str() is used to copy the string into the ring buffer.
There's a helper structure that is created in the TRACE_EVENT()
macro logic that will hold the string length and its position in
the ring buffer which is created by __string().
There are several trace events that have a function to create the
string to save. This function is executed twice. Once for
__string() and again for __assign_str(). There's no reason for
this. The helper structure could also save the string it used in
__string() and simply copy that into __assign_str() (it also
already has its length).
By using the structure to store the source string for the
assignment, it means that the second argument to __assign_str() is
no longer needed.
It will be removed in the next merge window, but for now add a
warning if the source string given to __string() is different than
the source string given to __assign_str(), as the source to
__assign_str() isn't even used and will be going away.
- Added checks to make sure that the source of __string() is also the
source of __assign_str() so that it can be safely removed in the
next merge window.
Included fixes that the above check found.
- Other minor clean ups and fixes"
* tag 'trace-v6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (34 commits)
tracing: Add __string_src() helper to help compilers not to get confused
tracing: Use strcmp() in __assign_str() WARN_ON() check
tracepoints: Use WARN() and not WARN_ON() for warnings
tracing: Use div64_u64() instead of do_div()
tracing: Support to dump instance traces by ftrace_dump_on_oops
tracing: Remove second parameter to __assign_rel_str()
tracing: Add warning if string in __assign_str() does not match __string()
tracing: Add __string_len() example
tracing: Remove __assign_str_len()
ftrace: Fix most kernel-doc warnings
tracing: Decrement the snapshot if the snapshot trigger fails to register
tracing: Fix snapshot counter going between two tracers that use it
tracing: Use EVENT_NULL_STR macro instead of open coding "(null)"
tracing: Use ? : shortcut in trace macros
tracing: Do not calculate strlen() twice for __string() fields
tracing: Rework __assign_str() and __string() to not duplicate getting the string
cxl/trace: Properly initialize cxl_poison region name
net: hns3: tracing: fix hclgevf trace event strings
drm/i915: Add missing ; to __assign_str() macros in tracepoint code
NFSD: Fix nfsd_clid_class use of __string_len() macro
...
|
||
|
Huang Yiwei
|
19f0423fd5 |
tracing: Support to dump instance traces by ftrace_dump_on_oops
Currently ftrace only dumps the global trace buffer on an OOPs. For debugging a production usecase, instance trace will be helpful to check specific problems since global trace buffer may be used for other purposes. This patch extend the ftrace_dump_on_oops parameter to dump a specific or multiple trace instances: - ftrace_dump_on_oops=0: as before -- don't dump - ftrace_dump_on_oops[=1]: as before -- dump the global trace buffer on all CPUs - ftrace_dump_on_oops=2 or =orig_cpu: as before -- dump the global trace buffer on CPU that triggered the oops - ftrace_dump_on_oops=<instance_name>: new behavior -- dump the tracing instance matching <instance_name> - ftrace_dump_on_oops[=2/orig_cpu],<instance1_name>[=2/orig_cpu], <instrance2_name>[=2/orig_cpu]: new behavior -- dump the global trace buffer and multiple instance buffer on all CPUs, or only dump on CPU that triggered the oops if =2 or =orig_cpu is given Also, the sysctl node can handle the input accordingly. Link: https://lore.kernel.org/linux-trace-kernel/20240223083126.1817731-1-quic_hyiwei@quicinc.com Cc: Ross Zwisler <zwisler@google.com> Cc: <mhiramat@kernel.org> Cc: <mark.rutland@arm.com> Cc: <mcgrof@kernel.org> Cc: <keescook@chromium.org> Cc: <j.granados@samsung.com> Cc: <mathieu.desnoyers@efficios.com> Cc: <corbet@lwn.net> Signed-off-by: Huang Yiwei <quic_hyiwei@quicinc.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> |
||
|
Thorsten Leemhuis
|
b8cfda5c90 |
docs: verify/bisect: remove a level of indenting
Remove a unnecessary level of indenting in some areas of the reference section. No text changes. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <01f1a407e92b92d9f8614bd34882956694bab123.1710750972.git.linux@leemhuis.info> |
||
|
Thorsten Leemhuis
|
2fa9411dc9 |
docs: verify/bisect: drop 'v' prefix, EOL aspect, and assorted fixes
A bunch of minor fixes and improvements and two other things: - Explain the 'v' version prefix when it's first used, but drop it everywhere in the text for consistency. Also drop single quotes around a few version numbers. - Point out that testing a stable/longterm kernel only makes sense if the series is still supported. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <f13d203d5975419608996300992eaa2e4fcc2dc1.1710750972.git.linux@leemhuis.info> |
||
|
Thorsten Leemhuis
|
a0a3222fa9 |
docs: verify/bisect: check taint flag
Instruct readers to check the taint flag, as the reason why it's set might directly or indirectly cause the bug or interfere with testing. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <8fcaffa8e85f36d51178d61061355c3c8bc85a0f.1710750972.git.linux@leemhuis.info> |
||
|
Thorsten Leemhuis
|
b513d12ed1 |
docs: verify/bisect: improve install instructions
These changes among others ensure modules will be installed when /sbin/installkernel is missing. Furthermore describe better what tasks the script ideally performs so that users can more easily check if those have been taken care of. In addition to that point to the distro's documentation for further details on installing kernels manually. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <e392bd5eb12654bed635f32b24304a712b0c67d1.1710750972.git.linux@leemhuis.info> |
||
|
Nícolas F. R. A. Prado
|
93cf15794d |
docs: *-regressions.rst: Add colon to regzbot commands
Use colon as command terminator everywhere for consistency, even though it's not strictly necessary. That way it will also match regzbot's reference documentation. Link: https://gitlab.com/knurd42/regzbot/-/blob/main/docs/reference.md Reviewed-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: "Nícolas F. R. A. Prado" <nfraprado@collabora.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20240311-regzbot-fixes-v2-1-98c1b6ec0678@collabora.com> |
||
|
Kendra Moore
|
b4331b9884 |
doc: Fix typo in admin-guide/cifs/introduction.rst
This patch corrects a spelling error specifically the word "supports" was misspelled "suppors". No functional changes are made by this patch; it only improves the accuracy and readability of the documentation. Signed-off-by: Kendra Moore <kendra.j.moore3443@gmail.com> Reviewed-by: "Matthew Wilcox (Oracle)" <willy@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20240312084753.27122-1-kendra.j.moore3443@gmail.com> |
||
|
Linus Torvalds
|
eb7cca1faf |
media updates for v6.9-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmXz6uoACgkQCF8+vY7k 4RX3MQ/+LOHOMkufbq9qxLtbq9/2Wrdzym0q6j2RzD4r2ou4+DPJS8kc7c4eX02M 9G37SL5LbLVT5OjMEP7ShZtBSmbAoqqxJOPxCWII32M3PbcV0QTYrTJg4LdyLry+ vZz1KqYqMOaCJk5oy41RrYwwB+dhYu19gXSbw73sXoxOI24m/MAErsf2WLSk/ojk lcz7UIOWWLOXH08im6+GoqFbMWv6j8a72J7mXdguu+k+dBou/TkPnND7dq5wC17S dRLzQyYUm0fRIya/Hnoj/Cd0yUn/8NVPogG8Om/Nqt8BvCLZEihvKSVc8NJukavD /3LlZ2oj39NzV6oRwpUdAwHFH7KXuEZM/aQX06Wl34AfXXpFleTBQD40kSo/AHIq Kg9GGL9Z2V7F1pHrx4VlouUpfGMS0lZig4oL70ZrFmz6jWVDE/Vg4xN9mOl6RraX S43fHP7abLSg8XvKDX+Gdb5/NzA3Zkom5EdIFLPEd2DBCS3n59KkFXQ3AqVm4XaK HV8WnIOw4qcmH4H/8yxUpLCd/s7ACNuT72pws9YWCZOGD+Wv2tHU21aFiCOiB5ol VlxBxttez3c3Il8UWJaaApCqM9Mn7bMMB/KMUSJzUt785cK0sS0/4D6cbYE0Zdqr 9IancZHiKMzbN14rNAqjUX8sqNNzPtVPDISLuXsN7MvzfjlOFLE= =YxyV -----END PGP SIGNATURE----- Merge tag 'media/v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - DVB budget legacy API was finally documented. It took only 20+ years to get some documentation about it... - hantro driver has gained support for STM32MP25 VDEC/VENC - rkisp1 has gained support for i.MX8MP - atomisp got rid of two items from its todo list. Still 5 items pending for moving it out of staging - lots of driver fixes, cleanups and improvements * tag 'media/v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (252 commits) media: rcar-isp: Disallow unbind of devices media: usbtv: Remove useless locks in usbtv_video_free() media: mediatek: vcodec: avoid -Wcast-function-type-strict warning media: ttpci: fix two memleaks in budget_av_attach media: go7007: fix a memleak in go7007_load_encoder media: dvb-frontends: avoid stack overflow warnings with clang media: pvrusb2: fix uaf in pvr2_context_set_notify media: usb: s2255: Refactor s2255_get_fx2fw media: ti: j721e-csi2rx: Convert to platform remove callback returning void media: stm32-dcmipp: Convert to platform remove callback returning void media: nxp: imx8-isi: Convert to platform remove callback returning void media: nuvoton: Convert to platform remove callback returning void media: chips-media: wave5: Convert to platform remove callback returning void media: chips-media: wave5: Remove unnecessary semicolons media: i2c: imx290: Fix IMX920 typo media: platform: replace of_graph_get_next_endpoint() media: i2c: replace of_graph_get_next_endpoint() media: ivsc: csi: Make use of sub-device state media: ivsc: csi: Swap SINK and SOURCE pads media: ipu-bridge: Serialise calls to IPU bridge init ... |
||
|
Linus Torvalds
|
e5eb28f6d1 |
- Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min
heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZfMnvgAKCRDdBJ7gKXxA jjKMAP4/Upq07D4wjkMVPb+QrkipbbLpdcgJ++q3z6rba4zhPQD+M3SFriIJk/Xh tKVmvihFxfAhdDthseXcIf1nBjMALwY= =8rVc -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name <ad@dr>" dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ... |
||
|
Linus Torvalds
|
902861e34c |
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series "mm:
zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is hotplugged
as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving policy
wherein we allocate memory across nodes in a weighted fashion rather
than uniformly. This is beneficial in heterogeneous memory environments
appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the process
has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown situations.
The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings" Ryan
Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's series
"Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page faults.
He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction test",
Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess in
our handling of DAX on archiecctures which have virtually aliasing data
caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides dramatic
improvements in worst-case mmap_lock hold times during certain
userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability improvements
in his series "Mitigate a vmap lock contention". It realizes a 12x
improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging of
large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages() to
an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which are
configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
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Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Sumanth Korikkar has taught s390 to allocate hotplug-time page frames
from hotplugged memory rather than only from main memory. Series
"implement "memmap on memory" feature on s390".
- More folio conversions from Matthew Wilcox in the series
"Convert memcontrol charge moving to use folios"
"mm: convert mm counter to take a folio"
- Chengming Zhou has optimized zswap's rbtree locking, providing
significant reductions in system time and modest but measurable
reductions in overall runtimes. The series is "mm/zswap: optimize the
scalability of zswap rb-tree".
- Chengming Zhou has also provided the series "mm/zswap: optimize zswap
lru list" which provides measurable runtime benefits in some
swap-intensive situations.
- And Chengming Zhou further optimizes zswap in the series "mm/zswap:
optimize for dynamic zswap_pools". Measured improvements are modest.
- zswap cleanups and simplifications from Yosry Ahmed in the series
"mm: zswap: simplify zswap_swapoff()".
- In the series "Add DAX ABI for memmap_on_memory", Vishal Verma has
contributed several DAX cleanups as well as adding a sysfs tunable to
control the memmap_on_memory setting when the dax device is
hotplugged as system memory.
- Johannes Weiner has added the large series "mm: zswap: cleanups",
which does that.
- More DAMON work from SeongJae Park in the series
"mm/damon: make DAMON debugfs interface deprecation unignorable"
"selftests/damon: add more tests for core functionalities and corner cases"
"Docs/mm/damon: misc readability improvements"
"mm/damon: let DAMOS feeds and tame/auto-tune itself"
- In the series "mm/mempolicy: weighted interleave mempolicy and sysfs
extension" Rakie Kim has developed a new mempolicy interleaving
policy wherein we allocate memory across nodes in a weighted fashion
rather than uniformly. This is beneficial in heterogeneous memory
environments appearing with CXL.
- Christophe Leroy has contributed some cleanup and consolidation work
against the ARM pagetable dumping code in the series "mm: ptdump:
Refactor CONFIG_DEBUG_WX and check_wx_pages debugfs attribute".
- Luis Chamberlain has added some additional xarray selftesting in the
series "test_xarray: advanced API multi-index tests".
- Muhammad Usama Anjum has reworked the selftest code to make its
human-readable output conform to the TAP ("Test Anything Protocol")
format. Amongst other things, this opens up the use of third-party
tools to parse and process out selftesting results.
- Ryan Roberts has added fork()-time PTE batching of THP ptes in the
series "mm/memory: optimize fork() with PTE-mapped THP". Mainly
targeted at arm64, this significantly speeds up fork() when the
process has a large number of pte-mapped folios.
- David Hildenbrand also gets in on the THP pte batching game in his
series "mm/memory: optimize unmap/zap with PTE-mapped THP". It
implements batching during munmap() and other pte teardown
situations. The microbenchmark improvements are nice.
- And in the series "Transparent Contiguous PTEs for User Mappings"
Ryan Roberts further utilizes arm's pte's contiguous bit ("contpte
mappings"). Kernel build times on arm64 improved nicely. Ryan's
series "Address some contpte nits" provides some followup work.
- In the series "mm/hugetlb: Restore the reservation" Breno Leitao has
fixed an obscure hugetlb race which was causing unnecessary page
faults. He has also added a reproducer under the selftest code.
- In the series "selftests/mm: Output cleanups for the compaction
test", Mark Brown did what the title claims.
- Kinsey Ho has added the series "mm/mglru: code cleanup and
refactoring".
- Even more zswap material from Nhat Pham. The series "fix and extend
zswap kselftests" does as claimed.
- In the series "Introduce cpu_dcache_is_aliasing() to fix DAX
regression" Mathieu Desnoyers has cleaned up and fixed rather a mess
in our handling of DAX on archiecctures which have virtually aliasing
data caches. The arm architecture is the main beneficiary.
- Lokesh Gidra's series "per-vma locks in userfaultfd" provides
dramatic improvements in worst-case mmap_lock hold times during
certain userfaultfd operations.
- Some page_owner enhancements and maintenance work from Oscar Salvador
in his series
"page_owner: print stacks and their outstanding allocations"
"page_owner: Fixup and cleanup"
- Uladzislau Rezki has contributed some vmalloc scalability
improvements in his series "Mitigate a vmap lock contention". It
realizes a 12x improvement for a certain microbenchmark.
- Some kexec/crash cleanup work from Baoquan He in the series "Split
crash out from kexec and clean up related config items".
- Some zsmalloc maintenance work from Chengming Zhou in the series
"mm/zsmalloc: fix and optimize objects/page migration"
"mm/zsmalloc: some cleanup for get/set_zspage_mapping()"
- Zi Yan has taught the MM to perform compaction on folios larger than
order=0. This a step along the path to implementaton of the merging
of large anonymous folios. The series is named "Enable >0 order folio
memory compaction".
- Christoph Hellwig has done quite a lot of cleanup work in the
pagecache writeback code in his series "convert write_cache_pages()
to an iterator".
- Some modest hugetlb cleanups and speedups in Vishal Moola's series
"Handle hugetlb faults under the VMA lock".
- Zi Yan has changed the page splitting code so we can split huge pages
into sizes other than order-0 to better utilize large folios. The
series is named "Split a folio to any lower order folios".
- David Hildenbrand has contributed the series "mm: remove
total_mapcount()", a cleanup.
- Matthew Wilcox has sought to improve the performance of bulk memory
freeing in his series "Rearrange batched folio freeing".
- Gang Li's series "hugetlb: parallelize hugetlb page init on boot"
provides large improvements in bootup times on large machines which
are configured to use large numbers of hugetlb pages.
- Matthew Wilcox's series "PageFlags cleanups" does that.
- Qi Zheng's series "minor fixes and supplement for ptdesc" does that
also. S390 is affected.
- Cleanups to our pagemap utility functions from Peter Xu in his series
"mm/treewide: Replace pXd_large() with pXd_leaf()".
- Nico Pache has fixed a few things with our hugepage selftests in his
series "selftests/mm: Improve Hugepage Test Handling in MM
Selftests".
- Also, of course, many singleton patches to many things. Please see
the individual changelogs for details.
* tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (435 commits)
mm/zswap: remove the memcpy if acomp is not sleepable
crypto: introduce: acomp_is_async to expose if comp drivers might sleep
memtest: use {READ,WRITE}_ONCE in memory scanning
mm: prohibit the last subpage from reusing the entire large folio
mm: recover pud_leaf() definitions in nopmd case
selftests/mm: skip the hugetlb-madvise tests on unmet hugepage requirements
selftests/mm: skip uffd hugetlb tests with insufficient hugepages
selftests/mm: dont fail testsuite due to a lack of hugepages
mm/huge_memory: skip invalid debugfs new_order input for folio split
mm/huge_memory: check new folio order when split a folio
mm, vmscan: retry kswapd's priority loop with cache_trim_mode off on failure
mm: add an explicit smp_wmb() to UFFDIO_CONTINUE
mm: fix list corruption in put_pages_list
mm: remove folio from deferred split list before uncharging it
filemap: avoid unnecessary major faults in filemap_fault()
mm,page_owner: drop unnecessary check
mm,page_owner: check for null stack_record before bumping its refcount
mm: swap: fix race between free_swap_and_cache() and swapoff()
mm/treewide: align up pXd_leaf() retval across archs
mm/treewide: drop pXd_large()
...
|
||
|
Linus Torvalds
|
6d75c6f40a |
arm64 updates for 6.9:
* Reorganise the arm64 kernel VA space and add support for LPA2 (at
stage 1, KVM stage 2 was merged earlier) - 52-bit VA/PA address range
with 4KB and 16KB pages
* Enable Rust on arm64
* Support for the 2023 dpISA extensions (data processing ISA), host only
* arm64 perf updates:
- StarFive's StarLink (integrates one or more CPU cores with a shared
L3 memory system) PMU support
- Enable HiSilicon Erratum 162700402 quirk for HIP09
- Several updates for the HiSilicon PCIe PMU driver
- Arm CoreSight PMU support
- Convert all drivers under drivers/perf/ to use .remove_new()
* Miscellaneous:
- Don't enable workarounds for "rare" errata by default
- Clean up the DAIF flags handling for EL0 returns (in preparation for
NMI support)
- Kselftest update for ptrace()
- Update some of the sysreg field definitions
- Slight improvement in the code generation for inline asm I/O
accessors to permit offset addressing
- kretprobes: acquire regs via a BRK exception (previously done via a
trampoline handler)
- SVE/SME cleanups, comment updates
- Allow CALL_OPS+CC_OPTIMIZE_FOR_SIZE with clang (previously disabled
due to gcc silently ignoring -falign-functions=N)
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"The major features are support for LPA2 (52-bit VA/PA with 4K and 16K
pages), the dpISA extension and Rust enabled on arm64. The changes are
mostly contained within the usual arch/arm64/, drivers/perf, the arm64
Documentation and kselftests. The exception is the Rust support which
touches some generic build files.
Summary:
- Reorganise the arm64 kernel VA space and add support for LPA2 (at
stage 1, KVM stage 2 was merged earlier) - 52-bit VA/PA address
range with 4KB and 16KB pages
- Enable Rust on arm64
- Support for the 2023 dpISA extensions (data processing ISA), host
only
- arm64 perf updates:
- StarFive's StarLink (integrates one or more CPU cores with a
shared L3 memory system) PMU support
- Enable HiSilicon Erratum 162700402 quirk for HIP09
- Several updates for the HiSilicon PCIe PMU driver
- Arm CoreSight PMU support
- Convert all drivers under drivers/perf/ to use .remove_new()
- Miscellaneous:
- Don't enable workarounds for "rare" errata by default
- Clean up the DAIF flags handling for EL0 returns (in preparation
for NMI support)
- Kselftest update for ptrace()
- Update some of the sysreg field definitions
- Slight improvement in the code generation for inline asm I/O
accessors to permit offset addressing
- kretprobes: acquire regs via a BRK exception (previously done
via a trampoline handler)
- SVE/SME cleanups, comment updates
- Allow CALL_OPS+CC_OPTIMIZE_FOR_SIZE with clang (previously
disabled due to gcc silently ignoring -falign-functions=N)"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (134 commits)
Revert "mm: add arch hook to validate mmap() prot flags"
Revert "arm64: mm: add support for WXN memory translation attribute"
Revert "ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512"
ARM64: Dynamically allocate cpumasks and increase supported CPUs to 512
kselftest/arm64: Add 2023 DPISA hwcap test coverage
kselftest/arm64: Add basic FPMR test
kselftest/arm64: Handle FPMR context in generic signal frame parser
arm64/hwcap: Define hwcaps for 2023 DPISA features
arm64/ptrace: Expose FPMR via ptrace
arm64/signal: Add FPMR signal handling
arm64/fpsimd: Support FEAT_FPMR
arm64/fpsimd: Enable host kernel access to FPMR
arm64/cpufeature: Hook new identification registers up to cpufeature
docs: perf: Fix build warning of hisi-pcie-pmu.rst
perf: starfive: Only allow COMPILE_TEST for 64-bit architectures
MAINTAINERS: Add entry for StarFive StarLink PMU
docs: perf: Add description for StarFive's StarLink PMU
dt-bindings: perf: starfive: Add JH8100 StarLink PMU
perf: starfive: Add StarLink PMU support
docs: perf: Update usage for target filter of hisi-pcie-pmu
...
|
||
|
Linus Torvalds
|
66fd6d0bd7 |
platform-drivers-x86 for v6.9-1
Highlights: - acer-wmi: New HW support - amd/pmf: Support for new revision of heartbeat notify - asus-wmi: Correctly handle HW without LEDs - fujitsu-laptop: Battery charge control support - hp-wmi: Support for new thermal profiles - ideapad-laptop: Support for refresh rate key - intel/pmc: Put AI accelerator (GNA) into D3 if it has no driver to allow entry into low-power modes, and temporarily removed Lunar Lake SSRAM support due to breaking FW changes causing probe fail (further breaking FW changes are still pending) - pmc/punit_atom: Report devices that prevent reacing low power levels - surface: Fan speed function support - thinkpad_acpi: Support for more sperial keys and complete the list of models with non-standard fan registers - touchscreen_dmi: New HW support - wmi: Continued modernization efforts - Removal of obsoleted ledtrig-audio call and the related dependency - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements The following is an automated shortlog grouped by driver: acer-wmi: - Add predator_v4 module parameter - Add support for Acer PH16-71 amd/hsmp: - Add support for ACPI based probing - Cache pci_dev in struct hsmp_socket - Change devm_kzalloc() to devm_kcalloc() - Check num_sockets against MAX_AMD_SOCKETS - Create static func to handle platdev - Define a struct to hold mailbox regs - Move dev from platdev to hsmp_socket - Move hsmp_test to probe - Non-ACPI support for AMD F1A_M00~0Fh - Remove extra parenthesis and add a space - Restructure sysfs group creation amd/pmf: - Add missing __iomem attribute to policy_base - Add support to get APTS index numbers for static slider - Add support to get sbios requests in PMF driver - Add support to get sps default APTS index values - Add support to notify sbios heart beat event - Differentiate PMF ACPI versions - Disable debugfs support for querying power thermals - Do not use readl() for policy buffer access - Fix possible out-of-bound memory accesses - Fix return value of amd_pmf_start_policy_engine() - Update sps power thermals according to the platform-profiles - Use struct for cookie header asus-wmi: - Consider device is absent when the read is ~0 - Revert: Support WMI event queue clk: x86: - Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h dell-privacy: - Remove usage of wmi_has_guid() Documentation/x86/amd/hsmp: - Updating urls drivers/mellanox: - Convert snprintf to sysfs_emit fujitsu-laptop: - Add battery charge control support hp-wmi: - Add thermal profile support for 8BAD boards - Tidy up module source code ideapad-laptop: - map Fn + R key to KEY_REFRESH_RATE_TOGGLE - support Fn+R dual-function key Input: - allocate keycode for Display refresh rate toggle intel/ifs: - Add an entry rendezvous for SAF - Add current batch number to trace output - Remove unnecessary initialization of 'ret' - Replace the exit rendezvous with an entry rendezvous for ARRAY_BIST - Trace on all HT threads when executing a test intel/pmc/arl: - Put GNA device in D3 intel/pmc: - Improve PKGC residency counters debug intel/pmc/lnl: - Remove SSRAM support intel_scu_ipcutil: - Make scu static intel_scu_pcidrv: - Remove unused intel-mid.h intel_scu_wdt: - Remove unused intel-mid.h intel/tpmi: - Change vsec offset to u64 intel/vsec: - Remove nuisance message ISST: - Allow reading core-power state on HWP disabled systems mlxbf-pmc: - Cleanup signed/unsigned mix-up - fix signedness bugs - Ignore unsupported performance blocks mlxbf-pmc: mlxbf_pmc_event_list(): - make size ptr optional mlxbf-pmc: - Replace uintN_t with kernel-style types mlxreg-hotplug: - Remove redundant NULL-check pmc_atom: - Annotate d3_sts register bit defines - Check state of PMC clocks on s2idle - Check state of PMC managed devices on s2idle silicom-platform: - clean up a check surface: aggregator_registry: - add entry for fan speed thinkpad_acpi: - Add more ThinkPads with non-standard reg address for fan - Fix to correct wrong temp reporting on some ThinkPads - remove redundant assignment to variable i - Simplify thermal mode checking - Support for mode FN key touchscreen_dmi: - Add an extra entry for a variant of the Chuwi Vi8 tablet wmi: - Always evaluate _WED when receiving an event - Check if event data is not NULL - Check if WMxx control method exists - Do not instantiate older WMI drivers multiple times - Ignore duplicated GUIDs in legacy matches - Make input buffer mandatory when evaluating methods - Prevent incompatible event driver from probing - Remove obsolete duplicate GUID allowlist - Remove unnecessary out-of-memory message - Replace pr_err() with dev_err() - Stop using ACPI device class - Update documentation regarding _WED - Use ACPI device name in netlink event - Use FW_BUG when warning about missing control methods x86/atom: - Check state of Punit managed devices on s2idle x86: ibm_rtl: - make rtl_subsys const x86: wmi: - make wmi_bus_type const platform/x86: - make fw_attr_class constant - remove obsolete calls to ledtrig_audio_get Merges: - Merge tag 'platform-drivers-x86-v6.8-2' into pdx/for-next - Merge tag 'platform-drivers-x86-v6.8-4' into pdx86/for-next -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZfLZKgAKCRBZrE9hU+XO MWqnAQCZW0KiSzXbJkTN4GWlMOqnlaJsiflnPeVNxH59bDUTeQEA/OdSzyiDUqKr zJcGnOyILuQ3wCvQ5SuqRCwjFHXOQg0= =8y6r -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Ilpo Järvinen: - New acer-wmi HW support - Support for new revision of amd/pmf heartbeat notify - Correctly handle asus-wmi HW without LEDs - fujitsu-laptop battery charge control support - Support for new hp-wmi thermal profiles - Support ideapad-laptop refresh rate key - Put intel/pmc AI accelerator (GNA) into D3 if it has no driver to allow entry into low-power modes, and temporarily removed Lunar Lake SSRAM support due to breaking FW changes causing probe fail (further breaking FW changes are still pending) - Report pmc/punit_atom devices that prevent reacing low power levels - Surface Fan speed function support - Support for more sperial keys and complete the list of models with non-standard fan registers in thinkpad_acpi - New DMI touchscreen HW support - Continued modernization efforts of wmi - Removal of obsoleted ledtrig-audio call and the related dependency - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements * tag 'platform-drivers-x86-v6.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (87 commits) platform/x86/intel/pmc: Improve PKGC residency counters debug platform/x86: asus-wmi: Consider device is absent when the read is ~0 Documentation/x86/amd/hsmp: Updating urls platform/mellanox: mlxreg-hotplug: Remove redundant NULL-check platform/x86/amd/pmf: Update sps power thermals according to the platform-profiles platform/x86/amd/pmf: Add support to get sps default APTS index values platform/x86/amd/pmf: Add support to get APTS index numbers for static slider platform/x86/amd/pmf: Add support to notify sbios heart beat event platform/x86/amd/pmf: Add support to get sbios requests in PMF driver platform/x86/amd/pmf: Disable debugfs support for querying power thermals platform/x86/amd/pmf: Differentiate PMF ACPI versions x86/platform/atom: Check state of Punit managed devices on s2idle platform/x86: pmc_atom: Check state of PMC clocks on s2idle platform/x86: pmc_atom: Check state of PMC managed devices on s2idle platform/x86: pmc_atom: Annotate d3_sts register bit defines clk: x86: Move clk-pmc-atom register defines to include/linux/platform_data/x86/pmc_atom.h platform/x86: make fw_attr_class constant platform/x86/intel/tpmi: Change vsec offset to u64 platform/x86: intel_scu_pcidrv: Remove unused intel-mid.h platform/x86: intel_scu_wdt: Remove unused intel-mid.h ... |
||
|
Linus Torvalds
|
480e035fc4 |
drm for 6.9:
core: - EDID cleanups - scheduler error handling fixes - managed: add drmm_release_action() with tests - add ratelimited drm debug print - DPCD PSR early transport macro - DP tunneling and bandwidth allocation helpers - remove built-in edids - dp: Avoid AUX transfers on powered-down displays - dp: Add VSC SDP helpers cross drivers: - use new drm print helpers - switch to ->read_edid callback - gem: add stats for shared buffers plus updates to amdgpu, i915, xe syncobj: - fixes to waiting and sleeping ttm: - add tests - fix errno codes - simply busy-placement handling - fix page decryption media: - tc358743: fix v4l device registration video: - move all kernel parameters for video behind CONFIG_VIDEO sound: - remove <drm/drm_edid.h> include from header ci: - add tests for msm - fix apq8016 runner efifb: - use copy of global screen_info state vesafb: - use copy of global screen_info state simplefb: - fix logging bridge: - ite-6505: fix DP link-training bug - samsung-dsim: fix error checking in probe - samsung-dsim: add bsh-smm-s2/pro boards - tc358767: fix regmap usage - imx: add i.MX8MP HDMI PVI plus DT bindings - imx: add i.MX8MP HDMI TX plus DT bindings - sii902x: fix probing and unregistration - tc358767: limit pixel PLL input range - switch to new drm_bridge_read_edid() interface panel: - ltk050h3146w: error-handling fixes - panel-edp: support delay between power-on and enable; use put_sync in unprepare; support Mediatek MT8173 Chromebooks, BOE NV116WHM-N49 V8.0, BOE NV122WUM-N41, CSO MNC207QS1-1 plus DT bindings - panel-lvds: support EDT ETML0700Z9NDHA plus DT bindings - panel-novatek: FRIDA FRD400B25025-A-CTK plus DT bindings - add BOE TH101MB31IG002-28A plus DT bindings - add EDT ETML1010G3DRA plus DT bindings - add Novatek NT36672E LCD DSI plus DT bindings - nt36523: support 120Hz timings, fix includes - simple: fix display timings on RK32FN48H - visionox-vtdr6130: fix initialization - add Powkiddy RGB10MAX3 plus DT bindings - st7703: support panel rotation plus DT bindings - add Himax HX83112A plus DT bindings - ltk500hd1829: add support for ltk101b4029w and admatec 9904370 - simple: add BOE BP082WX1-100 8.2" panel plus DT bindungs panel-orientation-quirks: - GPD Win Mini amdgpu: - Validate DMABuf imports in compute VMs - Add RAS ACA framework - PSP 13 fixes - Misc code cleanups - Replay fixes - Atom interpretor PS, WS bounds checking - DML2 fixes - Audio fixes - DCN 3.5 Z state fixes - Remove deprecated ida_simple usage - UBSAN fixes - RAS fixes - Enable seq64 infrastructure - DC color block enablement - Documentation updates - DC documentation updates - DMCUB updates - ATHUB 4.1 support - LSDMA 7.0 support - JPEG DPG support - IH 7.0 support - HDP 7.0 support - VCN 5.0 support - SMU 13.0.6 updates - NBIO 7.11 updates - SDMA 6.1 updates - MMHUB 3.3 updates - DCN 3.5.1 support - NBIF 6.3.1 support - VPE 6.1.1 support amdkfd: - Validate DMABuf imports in compute VMs - SVM fixes - Trap handler updates and enhancements - Fix cache size reporting - Relocate the trap handler radeon: - Atom interpretor PS, WS bounds checking - Misc code cleanups xe: - new query for GuC submission version - Remove unused persistent exec_queues - Add vram frequency sysfs attributes - Add the flag XE_VM_BIND_FLAG_DUMPABLE - Drop pre-production workarounds - Drop kunit tests for unsupported platforms - Start pumbling SR-IOV support with memory based interrupts for VF - Allow to map BO in GGTT with PAT index corresponding to XE_CACHE_UC to work with memory based interrupts - Add GuC Doorbells Manager as prep work SR-IOV - Implement additional workarounds for xe2 and MTL - Program a few registers according to perfomance guide spec for Xe2 - Fix remaining 32b build issues and enable it back - Fix build with CONFIG_DEBUG_FS=n - Fix warnings from GuC ABI headers - Introduce Relay Communication for SR-IOV for VF <-> GuC <-> PF - Release mmap mappings on rpm suspend - Disable mid-thread preemption when not properly supported by hardware - Fix xe_exec by reserving extra fence slot for CPU bind - Fix xe_exec with full long running exec queue - Canonicalize addresses where needed for Xe2 and add to devcoredum - Toggle USM support for Xe2 - Only allow 1 ufence per exec / bind IOCTL - Add GuC firmware loading for Lunar Lake - Add XE_VMA_PTE_64K VMA flag i915: - Add more ADL-N PCI IDs - Enable fastboot also on older platforms - Early transport for panel replay and PSR - New ARL PCI IDs - DP TPS4 PHY test pattern support - Unify and improve VSC SDP for PSR and non-PSR cases - Refactor memory regions and improve debug logging - Rework global state serialization - Remove unused CDCLK divider fields - Unify HDCP connector logging format - Use display instead of graphics version in display code - Move VBT and opregion debugfs next to the implementation - Abstract opregion interface, use opaque type - MTL fixes - HPD handling fixes - Add GuC submission interface version query - Atomically invalidate userptr on mmu-notifier - Update handling of MMIO triggered reports - Don't make assumptions about intel_wakeref_t type - Extend driver code of Xe_LPG to Xe_LPG+ - Add flex arrays to struct i915_syncmap - Allow for very slow HuC loading - DP tunneling and bandwidth allocation support msm: - Correct bindings for MSM8976 and SM8650 platforms - Start migration of MDP5 platforms to DPU driver - X1E80100 MDSS support - DPU: - Improve DSC allocation, fixing several important corner cases - Add support for SDM630/SDM660 platforms - Simplify dpu_encoder_phys_ops - Apply fixes targeting DSC support with a single DSC encoder - Apply fixes for HCTL_EN timing configuration - X1E80100 support - Add support for YUV420 over DP - GPU: - fix sc7180 UBWC config - fix a7xx LLC config - new gpu support: a305B, a750, a702 - machine support: SM7150 (different power levels than other a618) - a7xx devcoredump support habanalabs: - configure IRQ affinity according to NUMA node - move HBM MMU page tables inside the HBM - improve device reset - check extended PCIe errors ivpu: - updates to firmware API - refactor BO allocation imx: - use devm_ functions during init hisilicon: - fix EDID includes mgag200: - improve ioremap usage - convert to struct drm_edid - Work around PCI write bursts nouveau: - disp: use kmemdup() - fix EDID includes - documentation fixes qaic: - fixes to BO handling - make use of DRM managed release - fix order of remove operations rockchip: - analogix_dp: get encoder port from DT - inno_hdmi: support HDMI for RK3128 - lvds: error-handling fixes ssd130x: - support SSD133x plus DT bindings tegra: - fix error handling tilcdc: - make use of DRM managed release v3d: - show memory stats in debugfs - Support display MMU page size vc4: - fix error handling in plane prepare_fb - fix framebuffer test in plane helpers virtio: - add venus capset defines vkms: - fix OOB access when programming the LUT - Kconfig improvements vmwgfx: - unmap surface before changing plane state - fix memory leak in error handling - documentation fixes - list command SVGA_3D_CMD_DEFINE_GB_SURFACE_V4 as invalid - fix null-pointer deref in execbuf - refactor display-mode probing - fix fencing for creating cursor MOBs - fix cursor-memory lifetime xlnx: - fix live video input for ZynqMP DPSUB lima: - fix memory leak loongson: - fail if no VRAM present meson: - switch to new drm_bridge_read_edid() interface renesas: - add RZ/G2L DU support plus DT bindings mxsfb: - Use managed mode config sun4i: - HDMI: updates to atomic mode setting mediatek: - Add display driver for MT8188 VDOSYS1 - DSI driver cleanups - Filter modes according to hardware capability - Fix a null pointer crash in mtk_drm_crtc_finish_page_flip etnaviv: - enhancements for NPU and MRT support -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEEKbZHaGwW9KfbeusDHTzWXnEhr4FAmXxI+AACgkQDHTzWXnE hr5isxAApZ+DxesDbV8bd91KXL03vTfJtM5xVQuZoDzrr20KdTvu2EfQcCFnAUjl YtY05U9arDT4Txq5nX70Xc6I5M9HN6lqSUfsWhI6xUcR9TUollPbYwEu8IdoMaCG TRnspkiheye+DLFY6omLNH2aG1/k1IIefVWKaClFpbNPaaSHREDiY7/rkmErMBIS hrN13+6IVzX7+6fmNgHugUfdyawDJ8J9Nsc8T3Zlioljq3p+VbtStLsGeABTHSEJ MX18FwbGllI+QcXvaXM8gIg8NYKvSx/ZtlvKTpyPpTjZT3i3BpY+7yJqWDRQhiGM VTX7di1f90yWgzlYE5T33MW7Imvw3q04N7qYJ+Z1LHD/A8VyjwPUKLeul8P9ousT 0qQLSQsnuXH5AMLDh8IeLG/i0hAMWJ2UbProFSAFhd/UQHP7QOm2mmCsf79me9It qKFn6QZKvAKGZk/myTbQIVAmQWrDCpKq4i1aoKXEvcEuQUtM1lPvmMVsStVEfG+y ACaI24zSJACViH6rfhVzr74giwZX/ay0NSXqwRXfD5kX8fXb050LxLGW93iYZoHv FpdT2C8oTS1A5nsZpoxwVP35euUsp7D4J5YYbrZder2m0s0DDCVLMqdFrSVNdWDM 4ZQRiY3wCiJjSS8dpwppW0uaVGjtnGQnjQ5sQrIw0vKkwxee0TQ= =WLj9 -----END PGP SIGNATURE----- Merge tag 'drm-next-2024-03-13' of https://gitlab.freedesktop.org/drm/kernel Pull drm updates from Dave Airlie: "Highlights are usual, more AMD IP blocks for future hw, i915/xe changes, Displayport tunnelling support for i915, msm YUV over DP changes, new tests for ttm, but its mostly a lot of stuff all over the place from lots of people. core: - EDID cleanups - scheduler error handling fixes - managed: add drmm_release_action() with tests - add ratelimited drm debug print - DPCD PSR early transport macro - DP tunneling and bandwidth allocation helpers - remove built-in edids - dp: Avoid AUX transfers on powered-down displays - dp: Add VSC SDP helpers cross drivers: - use new drm print helpers - switch to ->read_edid callback - gem: add stats for shared buffers plus updates to amdgpu, i915, xe syncobj: - fixes to waiting and sleeping ttm: - add tests - fix errno codes - simply busy-placement handling - fix page decryption media: - tc358743: fix v4l device registration video: - move all kernel parameters for video behind CONFIG_VIDEO sound: - remove <drm/drm_edid.h> include from header ci: - add tests for msm - fix apq8016 runner efifb: - use copy of global screen_info state vesafb: - use copy of global screen_info state simplefb: - fix logging bridge: - ite-6505: fix DP link-training bug - samsung-dsim: fix error checking in probe - samsung-dsim: add bsh-smm-s2/pro boards - tc358767: fix regmap usage - imx: add i.MX8MP HDMI PVI plus DT bindings - imx: add i.MX8MP HDMI TX plus DT bindings - sii902x: fix probing and unregistration - tc358767: limit pixel PLL input range - switch to new drm_bridge_read_edid() interface panel: - ltk050h3146w: error-handling fixes - panel-edp: support delay between power-on and enable; use put_sync in unprepare; support Mediatek MT8173 Chromebooks, BOE NV116WHM-N49 V8.0, BOE NV122WUM-N41, CSO MNC207QS1-1 plus DT bindings - panel-lvds: support EDT ETML0700Z9NDHA plus DT bindings - panel-novatek: FRIDA FRD400B25025-A-CTK plus DT bindings - add BOE TH101MB31IG002-28A plus DT bindings - add EDT ETML1010G3DRA plus DT bindings - add Novatek NT36672E LCD DSI plus DT bindings - nt36523: support 120Hz timings, fix includes - simple: fix display timings on RK32FN48H - visionox-vtdr6130: fix initialization - add Powkiddy RGB10MAX3 plus DT bindings - st7703: support panel rotation plus DT bindings - add Himax HX83112A plus DT bindings - ltk500hd1829: add support for ltk101b4029w and admatec 9904370 - simple: add BOE BP082WX1-100 8.2" panel plus DT bindungs panel-orientation-quirks: - GPD Win Mini amdgpu: - Validate DMABuf imports in compute VMs - Add RAS ACA framework - PSP 13 fixes - Misc code cleanups - Replay fixes - Atom interpretor PS, WS bounds checking - DML2 fixes - Audio fixes - DCN 3.5 Z state fixes - Remove deprecated ida_simple usage - UBSAN fixes - RAS fixes - Enable seq64 infrastructure - DC color block enablement - Documentation updates - DC documentation updates - DMCUB updates - ATHUB 4.1 support - LSDMA 7.0 support - JPEG DPG support - IH 7.0 support - HDP 7.0 support - VCN 5.0 support - SMU 13.0.6 updates - NBIO 7.11 updates - SDMA 6.1 updates - MMHUB 3.3 updates - DCN 3.5.1 support - NBIF 6.3.1 support - VPE 6.1.1 support amdkfd: - Validate DMABuf imports in compute VMs - SVM fixes - Trap handler updates and enhancements - Fix cache size reporting - Relocate the trap handler radeon: - Atom interpretor PS, WS bounds checking - Misc code cleanups xe: - new query for GuC submission version - Remove unused persistent exec_queues - Add vram frequency sysfs attributes - Add the flag XE_VM_BIND_FLAG_DUMPABLE - Drop pre-production workarounds - Drop kunit tests for unsupported platforms - Start pumbling SR-IOV support with memory based interrupts for VF - Allow to map BO in GGTT with PAT index corresponding to XE_CACHE_UC to work with memory based interrupts - Add GuC Doorbells Manager as prep work SR-IOV - Implement additional workarounds for xe2 and MTL - Program a few registers according to perfomance guide spec for Xe2 - Fix remaining 32b build issues and enable it back - Fix build with CONFIG_DEBUG_FS=n - Fix warnings from GuC ABI headers - Introduce Relay Communication for SR-IOV for VF <-> GuC <-> PF - Release mmap mappings on rpm suspend - Disable mid-thread preemption when not properly supported by hardware - Fix xe_exec by reserving extra fence slot for CPU bind - Fix xe_exec with full long running exec queue - Canonicalize addresses where needed for Xe2 and add to devcoredum - Toggle USM support for Xe2 - Only allow 1 ufence per exec / bind IOCTL - Add GuC firmware loading for Lunar Lake - Add XE_VMA_PTE_64K VMA flag i915: - Add more ADL-N PCI IDs - Enable fastboot also on older platforms - Early transport for panel replay and PSR - New ARL PCI IDs - DP TPS4 PHY test pattern support - Unify and improve VSC SDP for PSR and non-PSR cases - Refactor memory regions and improve debug logging - Rework global state serialization - Remove unused CDCLK divider fields - Unify HDCP connector logging format - Use display instead of graphics version in display code - Move VBT and opregion debugfs next to the implementation - Abstract opregion interface, use opaque type - MTL fixes - HPD handling fixes - Add GuC submission interface version query - Atomically invalidate userptr on mmu-notifier - Update handling of MMIO triggered reports - Don't make assumptions about intel_wakeref_t type - Extend driver code of Xe_LPG to Xe_LPG+ - Add flex arrays to struct i915_syncmap - Allow for very slow HuC loading - DP tunneling and bandwidth allocation support msm: - Correct bindings for MSM8976 and SM8650 platforms - Start migration of MDP5 platforms to DPU driver - X1E80100 MDSS support - DPU: - Improve DSC allocation, fixing several important corner cases - Add support for SDM630/SDM660 platforms - Simplify dpu_encoder_phys_ops - Apply fixes targeting DSC support with a single DSC encoder - Apply fixes for HCTL_EN timing configuration - X1E80100 support - Add support for YUV420 over DP - GPU: - fix sc7180 UBWC config - fix a7xx LLC config - new gpu support: a305B, a750, a702 - machine support: SM7150 (different power levels than other a618) - a7xx devcoredump support habanalabs: - configure IRQ affinity according to NUMA node - move HBM MMU page tables inside the HBM - improve device reset - check extended PCIe errors ivpu: - updates to firmware API - refactor BO allocation imx: - use devm_ functions during init hisilicon: - fix EDID includes mgag200: - improve ioremap usage - convert to struct drm_edid - Work around PCI write bursts nouveau: - disp: use kmemdup() - fix EDID includes - documentation fixes qaic: - fixes to BO handling - make use of DRM managed release - fix order of remove operations rockchip: - analogix_dp: get encoder port from DT - inno_hdmi: support HDMI for RK3128 - lvds: error-handling fixes ssd130x: - support SSD133x plus DT bindings tegra: - fix error handling tilcdc: - make use of DRM managed release v3d: - show memory stats in debugfs - Support display MMU page size vc4: - fix error handling in plane prepare_fb - fix framebuffer test in plane helpers virtio: - add venus capset defines vkms: - fix OOB access when programming the LUT - Kconfig improvements vmwgfx: - unmap surface before changing plane state - fix memory leak in error handling - documentation fixes - list command SVGA_3D_CMD_DEFINE_GB_SURFACE_V4 as invalid - fix null-pointer deref in execbuf - refactor display-mode probing - fix fencing for creating cursor MOBs - fix cursor-memory lifetime xlnx: - fix live video input for ZynqMP DPSUB lima: - fix memory leak loongson: - fail if no VRAM present meson: - switch to new drm_bridge_read_edid() interface renesas: - add RZ/G2L DU support plus DT bindings mxsfb: - Use managed mode config sun4i: - HDMI: updates to atomic mode setting mediatek: - Add display driver for MT8188 VDOSYS1 - DSI driver cleanups - Filter modes according to hardware capability - Fix a null pointer crash in mtk_drm_crtc_finish_page_flip etnaviv: - enhancements for NPU and MRT support" * tag 'drm-next-2024-03-13' of https://gitlab.freedesktop.org/drm/kernel: (1420 commits) drm/amd/display: Removed redundant @ symbol to fix kernel-doc warnings in -next repo drm/amd/pm: wait for completion of the EnableGfxImu message drm/amdgpu/soc21: add mode2 asic reset for SMU IP v14.0.1 drm/amdgpu: add smu 14.0.1 support drm/amdgpu: add VPE 6.1.1 discovery support drm/amdgpu/vpe: add VPE 6.1.1 support drm/amdgpu/vpe: don't emit cond exec command under collaborate mode drm/amdgpu/vpe: add collaborate mode support for VPE drm/amdgpu/vpe: add PRED_EXE and COLLAB_SYNC OPCODE drm/amdgpu/vpe: add multi instance VPE support drm/amdgpu/discovery: add nbif v6_3_1 ip block drm/amdgpu: Add nbif v6_3_1 ip block support drm/amdgpu: Add pcie v6_1_0 ip headers (v5) drm/amdgpu: Add nbif v6_3_1 ip headers (v5) arch/powerpc: Remove <linux/fb.h> from backlight code macintosh/via-pmu-backlight: Include <linux/backlight.h> fbdev/chipsfb: Include <linux/backlight.h> drm/etnaviv: Restore some id values drm/amdkfd: make kfd_class constant drm/amdgpu: add ring timeout information in devcoredump ... |
||
|
Linus Torvalds
|
07abb19a9b |
Power management updates for 6.9-rc1
- Allow the Energy Model to be updated dynamically (Lukasz Luba).
- Add support for LZ4 compression algorithm to the hibernation image
creation and loading code (Nikhil V).
- Fix and clean up system suspend statistics collection (Rafael
Wysocki).
- Simplify device suspend and resume handling in the power management
core code (Rafael Wysocki).
- Fix PCI hibernation support description (Yiwei Lin).
- Make hibernation take set_memory_ro() return values into account as
appropriate (Christophe Leroy).
- Set mem_sleep_current during kernel command line setup to avoid an
ordering issue with handling it (Maulik Shah).
- Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
driver's system suspend callback (Qingliang Li).
- Simplify pm_runtime_get_if_active() usage and add a replacement for
pm_runtime_put_autosuspend() (Sakari Ailus).
- Add a tracepoint for runtime_status changes tracking (Vilas Bhat).
- Fix section title markdown in the runtime PM documentation (Yiwei
Lin).
- Enable preferred core support in the amd-pstate cpufreq driver (Meng
Li).
- Fix min_perf assignment in amd_pstate_adjust_perf() and make the
min/max limit perf values in amd-pstate always stay within the
(highest perf, lowest perf) range (Tor Vic, Meng Li).
- Allow intel_pstate to assign model-specific values to strings used in
the EPP sysfs interface and make it do so on Meteor Lake (Srinivas
Pandruvada).
- Drop long-unused cpudata::prev_cummulative_iowait from the
intel_pstate cpufreq driver (Jiri Slaby).
- Prevent scaling_cur_freq from exceeding scaling_max_freq when the
latter is an inefficient frequency (Shivnandan Kumar).
- Change default transition delay in cpufreq to 2ms (Qais Yousef).
- Remove references to 10ms minimum sampling rate from comments in the
cpufreq code (Pierre Gondois).
- Honour transition_latency over transition_delay_us in cpufreq (Qais
Yousef).
- Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar).
- General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
Belova).
- Update cpufreq-dt-platdev to block/approve devices (Richard Acayan).
- Make the SCMI cpufreq driver get a transition delay value from
firmware (Pierre Gondois).
- Prevent the haltpoll cpuidle governor from shrinking guest
poll_limit_ns below grow_start (Parshuram Sangle).
- Avoid potential overflow in integer multiplication when computing
cpuidle state parameters (C Cheng).
- Adjust MWAIT hint target C-state computation in the ACPI cpuidle
driver and in intel_idle to return a correct value for C0 (He
Rongguang).
- Address multiple issues in the TPMI RAPL driver and add support for
new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui).
- Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
Lezcano).
- Fix kernel-doc for dtpm_create_hierarchy() (Yang Li).
- Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
Norway Ananda).
- Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil).
- Fix a couple of warnings in the OPP core code related to W=1
builds (Viresh Kumar).
- Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
Kumar).
- Extend dev_pm_opp_data with turbo support (Sibi Sankar).
- dt-bindings: drop maxItems from inner items (David Heidelberg).
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Merge tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"From the functional perspective, the most significant change here is
the addition of support for Energy Models that can be updated
dynamically at run time.
There is also the addition of LZ4 compression support for hibernation,
the new preferred core support in amd-pstate, new platforms support in
the Intel RAPL driver, new model-specific EPP handling in intel_pstate
and more.
Apart from that, the cpufreq default transition delay is reduced from
10 ms to 2 ms (along with some related adjustments), the system
suspend statistics code undergoes a significant rework and there is a
usual bunch of fixes and code cleanups all over.
Specifics:
- Allow the Energy Model to be updated dynamically (Lukasz Luba)
- Add support for LZ4 compression algorithm to the hibernation image
creation and loading code (Nikhil V)
- Fix and clean up system suspend statistics collection (Rafael
Wysocki)
- Simplify device suspend and resume handling in the power management
core code (Rafael Wysocki)
- Fix PCI hibernation support description (Yiwei Lin)
- Make hibernation take set_memory_ro() return values into account as
appropriate (Christophe Leroy)
- Set mem_sleep_current during kernel command line setup to avoid an
ordering issue with handling it (Maulik Shah)
- Fix wake IRQs handling when pm_runtime_force_suspend() is used as a
driver's system suspend callback (Qingliang Li)
- Simplify pm_runtime_get_if_active() usage and add a replacement for
pm_runtime_put_autosuspend() (Sakari Ailus)
- Add a tracepoint for runtime_status changes tracking (Vilas Bhat)
- Fix section title markdown in the runtime PM documentation (Yiwei
Lin)
- Enable preferred core support in the amd-pstate cpufreq driver
(Meng Li)
- Fix min_perf assignment in amd_pstate_adjust_perf() and make the
min/max limit perf values in amd-pstate always stay within the
(highest perf, lowest perf) range (Tor Vic, Meng Li)
- Allow intel_pstate to assign model-specific values to strings used
in the EPP sysfs interface and make it do so on Meteor Lake
(Srinivas Pandruvada)
- Drop long-unused cpudata::prev_cummulative_iowait from the
intel_pstate cpufreq driver (Jiri Slaby)
- Prevent scaling_cur_freq from exceeding scaling_max_freq when the
latter is an inefficient frequency (Shivnandan Kumar)
- Change default transition delay in cpufreq to 2ms (Qais Yousef)
- Remove references to 10ms minimum sampling rate from comments in
the cpufreq code (Pierre Gondois)
- Honour transition_latency over transition_delay_us in cpufreq (Qais
Yousef)
- Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar)
- General enhancements / cleanups to ARM cpufreq drivers (tianyu2,
Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia
Belova)
- Update cpufreq-dt-platdev to block/approve devices (Richard Acayan)
- Make the SCMI cpufreq driver get a transition delay value from
firmware (Pierre Gondois)
- Prevent the haltpoll cpuidle governor from shrinking guest
poll_limit_ns below grow_start (Parshuram Sangle)
- Avoid potential overflow in integer multiplication when computing
cpuidle state parameters (C Cheng)
- Adjust MWAIT hint target C-state computation in the ACPI cpuidle
driver and in intel_idle to return a correct value for C0 (He
Rongguang)
- Address multiple issues in the TPMI RAPL driver and add support for
new platforms (Lunar Lake-M, Arrow Lake) to Intel RAPL (Zhang Rui)
- Fix freq_qos_add_request() return value check in dtpm_cpu (Daniel
Lezcano)
- Fix kernel-doc for dtpm_create_hierarchy() (Yang Li)
- Fix file leak in get_pkg_num() in x86_energy_perf_policy (Samasth
Norway Ananda)
- Fix cpupower-frequency-info.1 man page typo (Jan Kratochvil)
- Fix a couple of warnings in the OPP core code related to W=1 builds
(Viresh Kumar)
- Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h (Viresh
Kumar)
- Extend dev_pm_opp_data with turbo support (Sibi Sankar)
- dt-bindings: drop maxItems from inner items (David Heidelberg)"
* tag 'pm-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (95 commits)
dt-bindings: opp: drop maxItems from inner items
OPP: debugfs: Fix warning around icc_get_name()
OPP: debugfs: Fix warning with W=1 builds
cpufreq: Move dev_pm_opp_{init|free}_cpufreq_table() to pm_opp.h
OPP: Extend dev_pm_opp_data with turbo support
Fix cpupower-frequency-info.1 man page typo
cpufreq: scmi: Set transition_delay_us
firmware: arm_scmi: Populate fast channel rate_limit
firmware: arm_scmi: Populate perf commands rate_limit
cpuidle: ACPI/intel: fix MWAIT hint target C-state computation
PM: sleep: wakeirq: fix wake irq warning in system suspend
powercap: dtpm: Fix kernel-doc for dtpm_create_hierarchy() function
cpufreq: Don't unregister cpufreq cooling on CPU hotplug
PM: suspend: Set mem_sleep_current during kernel command line setup
cpufreq: Honour transition_latency over transition_delay_us
cpufreq: Limit resolving a frequency to policy min/max
Documentation: PM: Fix runtime_pm.rst markdown syntax
cpufreq: amd-pstate: adjust min/max limit perf
cpufreq: Remove references to 10ms min sampling rate
cpufreq: intel_pstate: Update default EPPs for Meteor Lake
...
|
||
|
Linus Torvalds
|
69afef4af4 |
gpio updates for v6.9
Serialization rework:
- use SRCU to serialize access to the global GPIO device list, to GPIO device
structs themselves and to GPIO descriptors
- make the GPIO subsystem resilient to the GPIO providers being unbound while
the API calls are in progress
- don't dereference the SRCU-protected chip pointer if the information we need
can be obtained from the GPIO device structure
- move some of the information contained in struct gpio_chip to struct
gpio_device to further reduce the need to dereference the former
- pass the GPIO device struct instead of the GPIO chip to sysfs callback to,
again, reduce the need for accessing the latter
- get GPIO descriptors from the GPIO device, not from the chip for the same
reason
- allow for mostly lockless operation of the GPIO driver API: assure
consistency with SRCU and atomic operations
- remove the global GPIO spinlock
- remove the character device RW semaphore
Core GPIOLIB:
- constify pointers in GPIO API where applicable
- unify the GPIO counting APIs for ACPI and OF
- provide a macro for iterating over all GPIOs, not only the ones that are
requested
- remove leftover typedefs
- pass the consumer device to GPIO core in devm_fwnode_gpiod_get_index() for
improved logging
- constify the GPIO bus type
- don't warn about removing GPIO chips with descriptors still held by users as
we can now handle this situation gracefully
- remove unused logging helpers
- unexport functions that are only used internally in the GPIO subsystem
- set the device type (assign the relevant struct device_type) for GPIO devices
New drivers:
- add the ChromeOS EC GPIO driver
Driver improvements:
- allow building gpio-vf610 with COMPILE_TEST as well as disabling it in
menuconfig (before it was always built for i.MX cofigs)
- count the number of EICs using the device properties instead of hard-coding
it in gpio-eic-sprd
- improve the device naming, extend the debugfs output and add lockdep asserts
to gpio-sim
DT bindings:
- document the 'label' property for gpio-pca9570
- convert aspeed,ast2400-gpio bindings to DT schema
- disallow unevaluated properties for gpio-mvebu
- document a new model in renesas,rcar-gpio
Documentation:
- improve the character device kerneldocs in user-space headers
- add proper documentation for the character device uAPI (both v1 and v2)
- move the sysfs and gpio-mockup docs into the "obsolete" section
- improve naming consistency for GPIO terms
- clarify the line values description for sysfs
- minor docs improvements
- improve the driver API contract for setting GPIO direction
- mark unsafe APIs as deprecated in kerneldocs and suggest replacements
Other:
- remove an obsolete test from selftests
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Merge tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"The biggest feature is the locking overhaul. Up until now the
synchronization in the GPIO subsystem was broken. There was a single
spinlock "protecting" multiple data structures but doing it wrong (as
evidenced by several places where it would be released when a sleeping
function was called and then reacquired without checking the protected
state).
We tried to use an RW semaphore before but the main issue with GPIO is
that we have drivers implementing the interfaces in both sleeping and
non-sleeping ways as well as user-facing interfaces that can be called
both from process as well as atomic contexts. Both ends converge in
the same code paths that can use neither spinlocks nor mutexes. The
only reasonable way out is to use SRCU and go mostly lockless. To that
end: we add several SRCU structs in relevant places and use them to
assure consistency between API calls together with atomic reads and
writes of GPIO descriptor flags where it makes sense.
This code has spent several weeks in next and has received several
fixes in the first week or two after which it stabilized nicely. The
GPIO subsystem is now resilient to providers being suddenly unbound.
We managed to also remove the existing character device RW semaphore
and the obsolete global spinlock.
Other than the locking rework we have one new driver (for Chromebook
EC), much appreciated documentation improvements from Kent and the
regular driver improvements, DT-bindings updates and GPIOLIB core
tweaks.
Serialization rework:
- use SRCU to serialize access to the global GPIO device list, to
GPIO device structs themselves and to GPIO descriptors
- make the GPIO subsystem resilient to the GPIO providers being
unbound while the API calls are in progress
- don't dereference the SRCU-protected chip pointer if the
information we need can be obtained from the GPIO device structure
- move some of the information contained in struct gpio_chip to
struct gpio_device to further reduce the need to dereference the
former
- pass the GPIO device struct instead of the GPIO chip to sysfs
callback to, again, reduce the need for accessing the latter
- get GPIO descriptors from the GPIO device, not from the chip for
the same reason
- allow for mostly lockless operation of the GPIO driver API: assure
consistency with SRCU and atomic operations
- remove the global GPIO spinlock
- remove the character device RW semaphore
Core GPIOLIB:
- constify pointers in GPIO API where applicable
- unify the GPIO counting APIs for ACPI and OF
- provide a macro for iterating over all GPIOs, not only the ones
that are requested
- remove leftover typedefs
- pass the consumer device to GPIO core in
devm_fwnode_gpiod_get_index() for improved logging
- constify the GPIO bus type
- don't warn about removing GPIO chips with descriptors still held by
users as we can now handle this situation gracefully
- remove unused logging helpers
- unexport functions that are only used internally in the GPIO
subsystem
- set the device type (assign the relevant struct device_type) for
GPIO devices
New drivers:
- add the ChromeOS EC GPIO driver
Driver improvements:
- allow building gpio-vf610 with COMPILE_TEST as well as disabling it
in menuconfig (before it was always built for i.MX cofigs)
- count the number of EICs using the device properties instead of
hard-coding it in gpio-eic-sprd
- improve the device naming, extend the debugfs output and add
lockdep asserts to gpio-sim
DT bindings:
- document the 'label' property for gpio-pca9570
- convert aspeed,ast2400-gpio bindings to DT schema
- disallow unevaluated properties for gpio-mvebu
- document a new model in renesas,rcar-gpio
Documentation:
- improve the character device kerneldocs in user-space headers
- add proper documentation for the character device uAPI (both v1 and v2)
- move the sysfs and gpio-mockup docs into the "obsolete" section
- improve naming consistency for GPIO terms
- clarify the line values description for sysfs
- minor docs improvements
- improve the driver API contract for setting GPIO direction
- mark unsafe APIs as deprecated in kerneldocs and suggest
replacements
Other:
- remove an obsolete test from selftests"
* tag 'gpio-updates-for-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (79 commits)
gpio: sysfs: repair export returning -EPERM on 1st attempt
selftest: gpio: remove obsolete gpio-mockup test
gpiolib: Deduplicate cleanup for-loop in gpiochip_add_data_with_key()
dt-bindings: gpio: aspeed,ast2400-gpio: Convert to DT schema
gpio: acpi: Make acpi_gpio_count() take firmware node as a parameter
gpio: of: Make of_gpio_get_count() take firmware node as a parameter
gpiolib: Pass consumer device through to core in devm_fwnode_gpiod_get_index()
gpio: sim: use for_each_hwgpio()
gpio: provide for_each_hwgpio()
gpio: don't warn about removing GPIO chips with active users anymore
gpio: sim: delimit the fwnode name with a ":" when generating labels
gpio: sim: add lockdep asserts
gpio: Add ChromeOS EC GPIO driver
gpio: constify of_phandle_args in of_find_gpio_device_by_xlate()
gpio: fix memory leak in gpiod_request_commit()
gpio: constify opaque pointer "data" in gpio_device_find()
gpio: cdev: fix a NULL-pointer dereference with DEBUG enabled
gpio: uapi: clarify default_values being logical
gpio: sysfs: fix inverted pointer logic
gpio: don't let lockdep complain about inherently dangerous RCU usage
...
|
||
|
Linus Torvalds
|
61387b8dcf |
- Introduce the DM vdo target which provides block-level
deduplication, compression, and thin provisioning. Please see both:
Documentation/admin-guide/device-mapper/vdo.rst and
Documentation/admin-guide/device-mapper/vdo-design.rst
- The DM vdo target handles its concurrency by pinning an IO, and
subsequent stages of handling that IO, to a particular VDO thread.
This aspect of VDO is "unique" but its overall implementation is
very tightly coupled to its mostly lockless threading model.
As such, VDO is not easily changed to use more traditional
finer-grained locking and Linux workqueues. Please see the "Zones
and Threading" section of vdo-design.rst
- The DM vdo target has been used in production for many years but has
seen significant changes over the past ~6 years to prepare it for
upstream inclusion. The codebase is still large but it is isolated
to drivers/md/dm-vdo/ and has been made considerably more
approachable and maintainable.
- Matt Sakai has been added to the MAINTAINERS file to reflect that he
will send VDO changes upstream through the DM subsystem maintainers.
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Merge tag 'for-6.9/dm-vdo' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper VDO target from Mike Snitzer:
"Introduce the DM vdo target which provides block-level deduplication,
compression, and thin provisioning. Please see:
Documentation/admin-guide/device-mapper/vdo.rst
Documentation/admin-guide/device-mapper/vdo-design.rst
The DM vdo target handles its concurrency by pinning an IO, and
subsequent stages of handling that IO, to a particular VDO thread.
This aspect of VDO is "unique" but its overall implementation is very
tightly coupled to its mostly lockless threading model. As such, VDO
is not easily changed to use more traditional finer-grained locking
and Linux workqueues. Please see the "Zones and Threading" section of
vdo-design.rst
The DM vdo target has been used in production for many years but has
seen significant changes over the past ~6 years to prepare it for
upstream inclusion. The codebase is still large but it is isolated to
drivers/md/dm-vdo/ and has been made considerably more approachable
and maintainable.
Matt Sakai has been added to the MAINTAINERS file to reflect that he
will send VDO changes upstream through the DM subsystem maintainers"
* tag 'for-6.9/dm-vdo' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (142 commits)
dm vdo: document minimum metadata size requirements
dm vdo: remove meaningless version number constant
dm vdo: remove vdo_perform_once
dm vdo block-map: Remove stray semicolon
dm vdo string-utils: change from uds_ to vdo_ namespace
dm vdo logger: change from uds_ to vdo_ namespace
dm vdo funnel-queue: change from uds_ to vdo_ namespace
dm vdo indexer: fix use after free
dm vdo logger: remove log level to string conversion code
dm vdo: document log_level parameter
dm vdo: add 'log_level' module parameter
dm vdo: remove all sysfs interfaces
dm vdo target: eliminate inappropriate uses of UDS_SUCCESS
dm vdo indexer: update ASSERT and ASSERT_LOG_ONLY usage
dm vdo encodings: update some stale comments
dm vdo permassert: audit all of ASSERT to test for VDO_SUCCESS
dm-vdo funnel-workqueue: return VDO_SUCCESS from make_simple_work_queue
dm vdo thread-utils: return VDO_SUCCESS on vdo_create_thread success
dm vdo int-map: return VDO_SUCCESS on success
dm vdo: check for VDO_SUCCESS return value from memory-alloc functions
...
|
||
|
Linus Torvalds
|
0ea680eda6 |
slab changes for 6.9
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEe7vIQRWZI0iWSE3xu+CwddJFiJoFAmXwH0wACgkQu+CwddJF iJq3HAf6A/0m0pSr0QDcwjM8D7TVYQJ+Z/jPC6Mj+HfTcF8Otrgk8c0M6EsHGIGF GQNnYJRKmBla3mpVFvDtsVZuiakEtRLCpoP5n23s8p8gY9ibJcl6bpn9NaMVMKrq kBnhQ9VdLAgKVcTH8wz6jJqdWiZ7W4jGH5NWO+nr+r0H7vay7jfB0+tur1NO8J09 HE5I76XE6ArRvaKYxvsZmOx1pihSmsJ7CerXN6Y8U5qcuxNXdUO/9rf+uv5llDIV gl54UAU79koZ9k88t5AiSKO2IZVhBgC/j66ds9MRRAFCf/ldxUtJIlsHTOnumfmy FApqwtR0MYNPeMPZpzogQbv58oOcNw== =XDxn -----END PGP SIGNATURE----- Merge tag 'slab-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab Pull slab updates from Vlastimil Babka: - Freelist loading optimization (Chengming Zhou) When the per-cpu slab is depleted and a new one loaded from the cpu partial list, optimize the loading to avoid an irq enable/disable cycle. This results in a 3.5% performance improvement on the "perf bench sched messaging" test. - Kernel boot parameters cleanup after SLAB removal (Xiongwei Song) Due to two different main slab implementations we've had boot parameters prefixed either slab_ and slub_ with some later becoming an alias as both implementations gained the same functionality (i.e. slab_nomerge vs slub_nomerge). In order to eventually get rid of the implementation-specific names, the canonical and documented parameters are now all prefixed slab_ and the slub_ variants become deprecated but still working aliases. - SLAB_ kmem_cache creation flags cleanup (Vlastimil Babka) The flags had hardcoded #define values which became tedious and error-prone when adding new ones. Assign the values via an enum that takes care of providing unique bit numbers. Also deprecate SLAB_MEM_SPREAD which was only used by SLAB, so it's a no-op since SLAB removal. Assign it an explicit zero value. The removals of the flag usage are handled independently in the respective subsystems, with a final removal of any leftover usage planned for the next release. - Misc cleanups and fixes (Chengming Zhou, Xiaolei Wang, Zheng Yejian) Includes removal of unused code or function parameters and a fix of a memleak. * tag 'slab-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: slab: remove PARTIAL_NODE slab_state mm, slab: remove memcg_from_slab_obj() mm, slab: remove the corner case of inc_slabs_node() mm/slab: Fix a kmemleak in kmem_cache_destroy() mm, slab, kasan: replace kasan_never_merge() with SLAB_NO_MERGE mm, slab: use an enum to define SLAB_ cache creation flags mm, slab: deprecate SLAB_MEM_SPREAD flag mm, slab: fix the comment of cpu partial list mm, slab: remove unused object_size parameter in kmem_cache_flags() mm/slub: remove parameter 'flags' in create_kmalloc_caches() mm/slub: remove unused parameter in next_freelist_entry() mm/slub: remove full list manipulation for non-debug slab mm/slub: directly load freelist from cpu partial slab in the likely case mm/slub: make the description of slab_min_objects helpful in doc mm/slub: replace slub_$params with slab_$params in slub.rst mm/slub: unify all sl[au]b parameters with "slab_$param" Documentation: kernel-parameters: remove noaliencache |
||
|
Linus Torvalds
|
9187210eee |
Networking changes for 6.9.
Core & protocols
----------------
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps etc.)
lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core
instead of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length
and budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global config
variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug
of ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for
use on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code
--------------------------------------------
- Enforce VM_IOREMAP flag and range in ioremap_page_range and introduce
VM_SPARSE kind and vm_area_[un]map_pages (used by bpf_arena).
- Rework selftest harness to enable the use of the full range of
ksft exit code (pass, fail, skip, xfail, xpass).
Netfilter
---------
- Allow userspace to define a table that is exclusively owned by a daemon
(via netlink socket aliveness) without auto-removing this table when
the userspace program exits. Such table gets marked as orphaned and
a restarting management daemon can re-attach/regain ownership.
- Speed up element insertions to nftables' concatenated-ranges set type.
Compact a few related data structures.
BPF
---
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between BPF
program and user space where structures inside the arena can have
pointers to other areas of the arena, and pointers work seamlessly
for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the verifier
and the program. The verifier allows the program to loop assuming it's
behaving well, but reserves the right to terminate it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF objects.
Wireless
--------
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API
----------
- Major overhaul of the Energy Efficient Ethernet internals to support
new link modes (2.5GE, 5GE), share more code between drivers
(especially those using phylib), and encourage more uniform behavior.
Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc
----
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions,
and packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message encapsulation
or "Netlink polymorphism", where interpretation of nested attributes
depends on link type, classifier type or some other "class type".
Drivers
-------
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic
on CAN BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO) support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs to
have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Large effort by Eric to lower rtnl_lock pressure and remove locks:
- Make commonly used parts of rtnetlink (address, route dumps
etc) lockless, protected by RCU instead of rtnl_lock.
- Add a netns exit callback which already holds rtnl_lock,
allowing netns exit to take rtnl_lock once in the core instead
of once for each driver / callback.
- Remove locks / serialization in the socket diag interface.
- Remove 6 calls to synchronize_rcu() while holding rtnl_lock.
- Remove the dev_base_lock, depend on RCU where necessary.
- Support busy polling on a per-epoll context basis. Poll length and
budget parameters can be set independently of system defaults.
- Introduce struct net_hotdata, to make sure read-mostly global
config variables fit in as few cache lines as possible.
- Add optional per-nexthop statistics to ease monitoring / debug of
ECMP imbalance problems.
- Support TCP_NOTSENT_LOWAT in MPTCP.
- Ensure that IPv6 temporary addresses' preferred lifetimes are long
enough, compared to other configured lifetimes, and at least 2 sec.
- Support forwarding of ICMP Error messages in IPSec, per RFC 4301.
- Add support for the independent control state machine for bonding
per IEEE 802.1AX-2008 5.4.15 in addition to the existing coupled
control state machine.
- Add "network ID" to MCTP socket APIs to support hosts with multiple
disjoint MCTP networks.
- Re-use the mono_delivery_time skbuff bit for packets which user
space wants to be sent at a specified time. Maintain the timing
information while traversing veth links, bridge etc.
- Take advantage of MSG_SPLICE_PAGES for RxRPC DATA and ACK packets.
- Simplify many places iterating over netdevs by using an xarray
instead of a hash table walk (hash table remains in place, for use
on fastpaths).
- Speed up scanning for expired routes by keeping a dedicated list.
- Speed up "generic" XDP by trying harder to avoid large allocations.
- Support attaching arbitrary metadata to netconsole messages.
Things we sprinkled into general kernel code:
- Enforce VM_IOREMAP flag and range in ioremap_page_range and
introduce VM_SPARSE kind and vm_area_[un]map_pages (used by
bpf_arena).
- Rework selftest harness to enable the use of the full range of ksft
exit code (pass, fail, skip, xfail, xpass).
Netfilter:
- Allow userspace to define a table that is exclusively owned by a
daemon (via netlink socket aliveness) without auto-removing this
table when the userspace program exits. Such table gets marked as
orphaned and a restarting management daemon can re-attach/regain
ownership.
- Speed up element insertions to nftables' concatenated-ranges set
type. Compact a few related data structures.
BPF:
- Add BPF token support for delegating a subset of BPF subsystem
functionality from privileged system-wide daemons such as systemd
through special mount options for userns-bound BPF fs to a trusted
& unprivileged application.
- Introduce bpf_arena which is sparse shared memory region between
BPF program and user space where structures inside the arena can
have pointers to other areas of the arena, and pointers work
seamlessly for both user-space programs and BPF programs.
- Introduce may_goto instruction that is a contract between the
verifier and the program. The verifier allows the program to loop
assuming it's behaving well, but reserves the right to terminate
it.
- Extend the BPF verifier to enable static subprog calls in spin lock
critical sections.
- Support registration of struct_ops types from modules which helps
projects like fuse-bpf that seeks to implement a new struct_ops
type.
- Add support for retrieval of cookies for perf/kprobe multi links.
- Support arbitrary TCP SYN cookie generation / validation in the TC
layer with BPF to allow creating SYN flood handling in BPF
firewalls.
- Add code generation to inline the bpf_kptr_xchg() helper which
improves performance when stashing/popping the allocated BPF
objects.
Wireless:
- Add SPP (signaling and payload protected) AMSDU support.
- Support wider bandwidth OFDMA, as required for EHT operation.
Driver API:
- Major overhaul of the Energy Efficient Ethernet internals to
support new link modes (2.5GE, 5GE), share more code between
drivers (especially those using phylib), and encourage more
uniform behavior. Convert and clean up drivers.
- Define an API for querying per netdev queue statistics from
drivers.
- IPSec: account in global stats for fully offloaded sessions.
- Create a concept of Ethernet PHY Packages at the Device Tree level,
to allow parameterizing the existing PHY package code.
- Enable Rx hashing (RSS) on GTP protocol fields.
Misc:
- Improvements and refactoring all over networking selftests.
- Create uniform module aliases for TC classifiers, actions, and
packet schedulers to simplify creating modprobe policies.
- Address all missing MODULE_DESCRIPTION() warnings in networking.
- Extend the Netlink descriptions in YAML to cover message
encapsulation or "Netlink polymorphism", where interpretation of
nested attributes depends on link type, classifier type or some
other "class type".
Drivers:
- Ethernet high-speed NICs:
- Add a new driver for Marvell's Octeon PCI Endpoint NIC VF.
- Intel (100G, ice, idpf):
- support E825-C devices
- nVidia/Mellanox:
- support devices with one port and multiple PCIe links
- Broadcom (bnxt):
- support n-tuple filters
- support configuring the RSS key
- Wangxun (ngbe/txgbe):
- implement irq_domain for TXGBE's sub-interrupts
- Pensando/AMD:
- support XDP
- optimize queue submission and wakeup handling (+17% bps)
- optimize struct layout, saving 28% of memory on queues
- Ethernet NICs embedded and virtual:
- Google cloud vNIC:
- refactor driver to perform memory allocations for new queue
config before stopping and freeing the old queue memory
- Synopsys (stmmac):
- obey queueMaxSDU and implement counters required by 802.1Qbv
- Renesas (ravb):
- support packet checksum offload
- suspend to RAM and runtime PM support
- Ethernet switches:
- nVidia/Mellanox:
- support for nexthop group statistics
- Microchip:
- ksz8: implement PHY loopback
- add support for KSZ8567, a 7-port 10/100Mbps switch
- PTP:
- New driver for RENESAS FemtoClock3 Wireless clock generator.
- Support OCP PTP cards designed and built by Adva.
- CAN:
- Support recvmsg() flags for own, local and remote traffic on CAN
BCM sockets.
- Support for esd GmbH PCIe/402 CAN device family.
- m_can:
- Rx/Tx submission coalescing
- wake on frame Rx
- WiFi:
- Intel (iwlwifi):
- enable signaling and payload protected A-MSDUs
- support wider-bandwidth OFDMA
- support for new devices
- bump FW API to 89 for AX devices; 90 for BZ/SC devices
- MediaTek (mt76):
- mt7915: newer ADIE version support
- mt7925: radio temperature sensor support
- Qualcomm (ath11k):
- support 6 GHz station power modes: Low Power Indoor (LPI),
Standard Power) SP and Very Low Power (VLP)
- QCA6390 & WCN6855: support 2 concurrent station interfaces
- QCA2066 support
- Qualcomm (ath12k):
- refactoring in preparation for Multi-Link Operation (MLO)
support
- 1024 Block Ack window size support
- firmware-2.bin support
- support having multiple identical PCI devices (firmware needs
to have ATH12K_FW_FEATURE_MULTI_QRTR_ID)
- QCN9274: support split-PHY devices
- WCN7850: enable Power Save Mode in station mode
- WCN7850: P2P support
- RealTek:
- rtw88: support for more rtw8811cu and rtw8821cu devices
- rtw89: support SCAN_RANDOM_SN and SET_SCAN_DWELL
- rtlwifi: speed up USB firmware initialization
- rtwl8xxxu:
- RTL8188F: concurrent interface support
- Channel Switch Announcement (CSA) support in AP mode
- Broadcom (brcmfmac):
- per-vendor feature support
- per-vendor SAE password setup
- DMI nvram filename quirk for ACEPC W5 Pro"
* tag 'net-next-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2255 commits)
nexthop: Fix splat with CONFIG_DEBUG_PREEMPT=y
nexthop: Fix out-of-bounds access during attribute validation
nexthop: Only parse NHA_OP_FLAGS for dump messages that require it
nexthop: Only parse NHA_OP_FLAGS for get messages that require it
bpf: move sleepable flag from bpf_prog_aux to bpf_prog
bpf: hardcode BPF_PROG_PACK_SIZE to 2MB * num_possible_nodes()
selftests/bpf: Add kprobe multi triggering benchmarks
ptp: Move from simple ida to xarray
vxlan: Remove generic .ndo_get_stats64
vxlan: Do not alloc tstats manually
devlink: Add comments to use netlink gen tool
nfp: flower: handle acti_netdevs allocation failure
net/packet: Add getsockopt support for PACKET_COPY_THRESH
net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID
selftests/bpf: Add bpf_arena_htab test.
selftests/bpf: Add bpf_arena_list test.
selftests/bpf: Add unit tests for bpf_arena_alloc/free_pages
bpf: Add helper macro bpf_addr_space_cast()
libbpf: Recognize __arena global variables.
bpftool: Recognize arena map type
...
|
||
|
Linus Torvalds
|
1f44039766 |
A moderatly busy cycle for development this time around.
- Some cleanup of the main index page for easier navigation
- Rework some of the other top-level pages for better readability and, with
luck, fewer merge conflicts in the future.
- Submit-checklist improvements, hopefully the first of many.
- New Italian translations
- A fair number of kernel-doc fixes and improvements. We have also dropped
the recommendation to use an old version of Sphinx.
- A new document from Thorsten on bisection
...and lots of fixes and updates.
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Merge tag 'docs-6.9' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"A moderatly busy cycle for development this time around.
- Some cleanup of the main index page for easier navigation
- Rework some of the other top-level pages for better readability
and, with luck, fewer merge conflicts in the future.
- Submit-checklist improvements, hopefully the first of many.
- New Italian translations
- A fair number of kernel-doc fixes and improvements. We have also
dropped the recommendation to use an old version of Sphinx.
- A new document from Thorsten on bisection
... and lots of fixes and updates"
* tag 'docs-6.9' of git://git.lwn.net/linux: (54 commits)
docs: verify/bisect: fixes, finetuning, and support for Arch
docs: Makefile: Add dependency to $(YNL_INDEX) for targets other than htmldocs
docs: Move ja_JP/howto.rst to ja_JP/process/howto.rst
docs: submit-checklist: use subheadings
docs: submit-checklist: structure by category
docs: new text on bisecting which also covers bug validation
docs: drop the version constraints for sphinx and dependencies
docs: kerneldoc-preamble.sty: Remove code for Sphinx <2.4
docs: Restore "smart quotes" for quotes
docs/zh_CN: accurate translation of "function"
docs: Include simplified link titles in main index
docs: Correct formatting of title in admin-guide/index.rst
docs: kernel_feat.py: fix build error for missing files
MAINTAINERS: Set the field name for subsystem profile section
kasan: Add documentation for CONFIG_KASAN_EXTRA_INFO
Fixed case issue with 'fault-injection' in documentation
kernel-doc: handle #if in enums as well
Documentation: update mailing list addresses
doc: kerneldoc.py: fix indentation
scripts/kernel-doc: simplify signature printing
...
|
||
|
Linus Torvalds
|
0e33cf955f |
* Mitigate RFDS vulnerability
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||
|
Linus Torvalds
|
685d982112 |
Core x86 changes for v6.9:
- The biggest change is the rework of the percpu code,
to support the 'Named Address Spaces' GCC feature,
by Uros Bizjak:
- This allows C code to access GS and FS segment relative
memory via variables declared with such attributes,
which allows the compiler to better optimize those accesses
than the previous inline assembly code.
- The series also includes a number of micro-optimizations
for various percpu access methods, plus a number of
cleanups of %gs accesses in assembly code.
- These changes have been exposed to linux-next testing for
the last ~5 months, with no known regressions in this area.
- Fix/clean up __switch_to()'s broken but accidentally
working handling of FPU switching - which also generates
better code.
- Propagate more RIP-relative addressing in assembly code,
to generate slightly better code.
- Rework the CPU mitigations Kconfig space to be less idiosyncratic,
to make it easier for distros to follow & maintain these options.
- Rework the x86 idle code to cure RCU violations and
to clean up the logic.
- Clean up the vDSO Makefile logic.
- Misc cleanups and fixes.
[ Please note that there's a higher number of merge commits in
this branch (three) than is usual in x86 topic trees. This happened
due to the long testing lifecycle of the percpu changes that
involved 3 merge windows, which generated a longer history
and various interactions with other core x86 changes that we
felt better about to carry in a single branch. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core x86 updates from Ingo Molnar:
- The biggest change is the rework of the percpu code, to support the
'Named Address Spaces' GCC feature, by Uros Bizjak:
- This allows C code to access GS and FS segment relative memory
via variables declared with such attributes, which allows the
compiler to better optimize those accesses than the previous
inline assembly code.
- The series also includes a number of micro-optimizations for
various percpu access methods, plus a number of cleanups of %gs
accesses in assembly code.
- These changes have been exposed to linux-next testing for the
last ~5 months, with no known regressions in this area.
- Fix/clean up __switch_to()'s broken but accidentally working handling
of FPU switching - which also generates better code
- Propagate more RIP-relative addressing in assembly code, to generate
slightly better code
- Rework the CPU mitigations Kconfig space to be less idiosyncratic, to
make it easier for distros to follow & maintain these options
- Rework the x86 idle code to cure RCU violations and to clean up the
logic
- Clean up the vDSO Makefile logic
- Misc cleanups and fixes
* tag 'x86-core-2024-03-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
x86/idle: Select idle routine only once
x86/idle: Let prefer_mwait_c1_over_halt() return bool
x86/idle: Cleanup idle_setup()
x86/idle: Clean up idle selection
x86/idle: Sanitize X86_BUG_AMD_E400 handling
sched/idle: Conditionally handle tick broadcast in default_idle_call()
x86: Increase brk randomness entropy for 64-bit systems
x86/vdso: Move vDSO to mmap region
x86/vdso/kbuild: Group non-standard build attributes and primary object file rules together
x86/vdso: Fix rethunk patching for vdso-image-{32,64}.o
x86/retpoline: Ensure default return thunk isn't used at runtime
x86/vdso: Use CONFIG_COMPAT_32 to specify vdso32
x86/vdso: Use $(addprefix ) instead of $(foreach )
x86/vdso: Simplify obj-y addition
x86/vdso: Consolidate targets and clean-files
x86/bugs: Rename CONFIG_RETHUNK => CONFIG_MITIGATION_RETHUNK
x86/bugs: Rename CONFIG_CPU_SRSO => CONFIG_MITIGATION_SRSO
x86/bugs: Rename CONFIG_CPU_IBRS_ENTRY => CONFIG_MITIGATION_IBRS_ENTRY
x86/bugs: Rename CONFIG_CPU_UNRET_ENTRY => CONFIG_MITIGATION_UNRET_ENTRY
x86/bugs: Rename CONFIG_SLS => CONFIG_MITIGATION_SLS
...
|
||
|
Linus Torvalds
|
b0402403e5 |
- Add a FRU (Field Replaceable Unit) memory poison manager which
collects and manages previously encountered hw errors in order to
save them to persistent storage across reboots. Previously recorded
errors are "replayed" upon reboot in order to poison memory which has
caused said errors in the past.
The main use case is stacked, on-chip memory which cannot simply be
replaced so poisoning faulty areas of it and thus making them
inaccessible is the only strategy to prolong its lifetime.
- Add an AMD address translation library glue which converts the
reported addresses of hw errors into system physical addresses in
order to be used by other subsystems like memory failure, for
example. Add support for MI300 accelerators to that library.
- igen6: Add support for Alder Lake-N SoC
- i10nm: Add Grand Ridge support
- The usual fixlets and cleanups
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Merge tag 'edac_updates_for_v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC updates from Borislav Petkov:
- Add a FRU (Field Replaceable Unit) memory poison manager which
collects and manages previously encountered hw errors in order to
save them to persistent storage across reboots. Previously recorded
errors are "replayed" upon reboot in order to poison memory which has
caused said errors in the past.
The main use case is stacked, on-chip memory which cannot simply be
replaced so poisoning faulty areas of it and thus making them
inaccessible is the only strategy to prolong its lifetime.
- Add an AMD address translation library glue which converts the
reported addresses of hw errors into system physical addresses in
order to be used by other subsystems like memory failure, for
example. Add support for MI300 accelerators to that library.
- igen6: Add support for Alder Lake-N SoC
- i10nm: Add Grand Ridge support
- The usual fixlets and cleanups
* tag 'edac_updates_for_v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/versal: Convert to platform remove callback returning void
RAS/AMD/FMPM: Fix off by one when unwinding on error
RAS/AMD/FMPM: Add debugfs interface to print record entries
RAS/AMD/FMPM: Save SPA values
RAS: Export helper to get ras_debugfs_dir
RAS/AMD/ATL: Fix bit overflow in denorm_addr_df4_np2()
RAS: Introduce a FRU memory poison manager
RAS/AMD/ATL: Add MI300 row retirement support
Documentation: Move RAS section to admin-guide
EDAC/versal: Make the bit position of injected errors configurable
EDAC/i10nm: Add Intel Grand Ridge micro-server support
EDAC/igen6: Add one more Intel Alder Lake-N SoC support
RAS/AMD/ATL: Add MI300 DRAM to normalized address translation support
RAS/AMD/ATL: Fix array overflow in get_logical_coh_st_fabric_id_mi300()
RAS/AMD/ATL: Add MI300 support
Documentation: RAS: Add index and address translation section
EDAC/amd64: Use new AMD Address Translation Library
RAS: Introduce AMD Address Translation Library
EDAC/synopsys: Convert to devm_platform_ioremap_resource()
|
||
|
Linus Torvalds
|
1f75619a72 |
- Fix a wrong check in the function reporting whether a CPU executes (or
not) a NMI handler - Ratelimit unknown NMIs messages in order to not potentially slow down the machine - Other fixlets -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmXvN0wACgkQEsHwGGHe VUqZLg//fo0puvI2XVjcyW2aNZXNyCWUID5J0HvIZqLveQQQzOopfuX4NLfgKSRR GUX3k/jlfO9pku+gz6rQRYi8kaTlY8rScf9XpbUBgZZg3Pz2/ySel5uhPpHatgZ7 Zj455XALGVLA3T4bFKfCvUGKmRVmSTyXgPg3i/yFpfVzRZ8yhvAyJWJSWxJpFOpC Eeg/cXUUPjlb2qOom0Bk9BEjG8Ez76yImAlN5ys/csG2Fe7iE3rU+DQ2IfU/yLfI 22QNZa8xGJY47c7iP1A/tGsxKGu5Pjsz4I2QvobWhteeiu+03g2NUWUcAaP+3/GN 6hj2IeiNAkhDcWaJMS9U5vaVAcfDZzTEErkPf896bk6lrR0UY1CRQlJzEQZLz1Vy 0ZVUuppY2hBcTj3YA9h65a/+sdsxAUG4BdsUJ63jHejJYEPN5YSFvL5wXZlxj3GO XVVMsHMs9Lgnz1x+xzAB8SmmoPSj6qdMneY1Xp92cEtV6QQM/EinTfIcTUtvDACZ 9FJ77Iu6Up4hemftTGOC8eVqr+V0Q8M5x2Xs8NQAwlq9dnFVQCIwd/LjdRDyJ3Gw ksFrq6Cv94Fi4bqmQi4CY04GH3kc5ua9sDeTM7rkBMm6RRSTO2NBgIOqHcBbrlOT B3kSUqoUB6BEqlRRqP/YZ8YSOL5FWk2A2WDKtp8+ThkDYixGy1M= =Jt9B -----END PGP SIGNATURE----- Merge tag 'x86_misc_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc x86 fixes from Borislav Petkov: - Fix a wrong check in the function reporting whether a CPU executes (or not) a NMI handler - Ratelimit unknown NMIs messages in order to not potentially slow down the machine - Other fixlets * tag 'x86_misc_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/nmi: Fix the inverse "in NMI handler" check Documentation/maintainer-tip: Add C++ tail comments exception Documentation/maintainer-tip: Add Closes tag x86/nmi: Rate limit unknown NMI messages Documentation/kernel-parameters: Add spec_rstack_overflow to mitigations=off |
||
|
Linus Torvalds
|
38b334fc76 |
- Add the x86 part of the SEV-SNP host support. This will allow the
kernel to be used as a KVM hypervisor capable of running SNP (Secure Nested Paging) guests. Roughly speaking, SEV-SNP is the ultimate goal of the AMD confidential computing side, providing the most comprehensive confidential computing environment up to date. This is the x86 part and there is a KVM part which did not get ready in time for the merge window so latter will be forthcoming in the next cycle. - Rework the early code's position-dependent SEV variable references in order to allow building the kernel with clang and -fPIE/-fPIC and -mcmodel=kernel - The usual set of fixes, cleanups and improvements all over the place -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmXvH0wACgkQEsHwGGHe VUrzmA//VS/n6dhHRnm/nAGngr4PeegkgV1OhyKYFfiZ272rT6P9QvblQrgcY0dc Ij1DOhEKlke51pTHvMOQ33B3P4Fuc0mx3dpCLY0up5V26kzQiKCjRKEkC4U1bcw8 W4GqMejaR89bE14bYibmwpSib9T/uVsV65eM3xf1iF5UvsnoUaTziymDoy+nb43a B1pdd5vcl4mBNqXeEvt0qjg+xkMLpWUI9tJDB8mbMl/cnIFGgMZzBaY8oktHSROK QpuUnKegOgp1RXpfLbNjmZ2Q4Rkk4MNazzDzWq3EIxaRjXL3Qp507ePK7yeA2qa0 J3jCBQc9E2j7lfrIkUgNIzOWhMAXM2YH5bvH6UrIcMi1qsWJYDmkp2MF1nUedjdf Wj16/pJbeEw1aKKIywJGwsmViSQju158vY3SzXG83U/A/Iz7zZRHFmC/ALoxZptY Bi7VhfcOSpz98PE3axnG8CvvxRDWMfzBr2FY1VmQbg6VBNo1Xl1aP/IH1I8iQNKg /laBYl/qP+1286TygF1lthYROb1lfEIJprgi2xfO6jVYUqPb7/zq2sm78qZRfm7l 25PN/oHnuidfVfI/H3hzcGubjOG9Zwra8WWYBB2EEmelf21rT0OLqq+eS4T6pxFb GNVfc0AzG77UmqbrpkAMuPqL7LrGaSee4NdU3hkEdSphlx1/YTo= =c1ps -----END PGP SIGNATURE----- Merge tag 'x86_sev_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SEV updates from Borislav Petkov: - Add the x86 part of the SEV-SNP host support. This will allow the kernel to be used as a KVM hypervisor capable of running SNP (Secure Nested Paging) guests. Roughly speaking, SEV-SNP is the ultimate goal of the AMD confidential computing side, providing the most comprehensive confidential computing environment up to date. This is the x86 part and there is a KVM part which did not get ready in time for the merge window so latter will be forthcoming in the next cycle. - Rework the early code's position-dependent SEV variable references in order to allow building the kernel with clang and -fPIE/-fPIC and -mcmodel=kernel - The usual set of fixes, cleanups and improvements all over the place * tag 'x86_sev_for_v6.9_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits) x86/sev: Disable KMSAN for memory encryption TUs x86/sev: Dump SEV_STATUS crypto: ccp - Have it depend on AMD_IOMMU iommu/amd: Fix failure return from snp_lookup_rmpentry() x86/sev: Fix position dependent variable references in startup code crypto: ccp: Make snp_range_list static x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT Documentation: virt: Fix up pre-formatted text block for SEV ioctls crypto: ccp: Add the SNP_SET_CONFIG command crypto: ccp: Add the SNP_COMMIT command crypto: ccp: Add the SNP_PLATFORM_STATUS command x86/cpufeatures: Enable/unmask SEV-SNP CPU feature KVM: SEV: Make AVIC backing, VMSA and VMCB memory allocation SNP safe crypto: ccp: Add panic notifier for SEV/SNP firmware shutdown on kdump iommu/amd: Clean up RMP entries for IOMMU pages during SNP shutdown crypto: ccp: Handle legacy SEV commands when SNP is enabled crypto: ccp: Handle non-volatile INIT_EX data when SNP is enabled crypto: ccp: Handle the legacy TMR allocation when SNP is enabled x86/sev: Introduce an SNP leaked pages list crypto: ccp: Provide an API to issue SEV and SNP commands ... |
||
|
Linus Torvalds
|
720c857907 |
Support for x86 Fast Return and Event Delivery (FRED):
FRED is a replacement for IDT event delivery on x86 and addresses most of
the technical nightmares which IDT exposes:
1) Exception cause registers like CR2 need to be manually preserved in
nested exception scenarios.
2) Hardware interrupt stack switching is suboptimal for nested exceptions
as the interrupt stack mechanism rewinds the stack on each entry which
requires a massive effort in the low level entry of #NMI code to handle
this.
3) No hardware distinction between entry from kernel or from user which
makes establishing kernel context more complex than it needs to be
especially for unconditionally nestable exceptions like NMI.
4) NMI nesting caused by IRET unconditionally reenabling NMIs, which is a
problem when the perf NMI takes a fault when collecting a stack trace.
5) Partial restore of ESP when returning to a 16-bit segment
6) Limitation of the vector space which can cause vector exhaustion on
large systems.
7) Inability to differentiate NMI sources
FRED addresses these shortcomings by:
1) An extended exception stack frame which the CPU uses to save exception
cause registers. This ensures that the meta information for each
exception is preserved on stack and avoids the extra complexity of
preserving it in software.
2) Hardware interrupt stack switching is non-rewinding if a nested
exception uses the currently interrupt stack.
3) The entry points for kernel and user context are separate and GS BASE
handling which is required to establish kernel context for per CPU
variable access is done in hardware.
4) NMIs are now nesting protected. They are only reenabled on the return
from NMI.
5) FRED guarantees full restore of ESP
6) FRED does not put a limitation on the vector space by design because it
uses a central entry points for kernel and user space and the CPUstores
the entry type (exception, trap, interrupt, syscall) on the entry stack
along with the vector number. The entry code has to demultiplex this
information, but this removes the vector space restriction.
The first hardware implementations will still have the current
restricted vector space because lifting this limitation requires
further changes to the local APIC.
7) FRED stores the vector number and meta information on stack which
allows having more than one NMI vector in future hardware when the
required local APIC changes are in place.
The series implements the initial FRED support by:
- Reworking the existing entry and IDT handling infrastructure to
accomodate for the alternative entry mechanism.
- Expanding the stack frame to accomodate for the extra 16 bytes FRED
requires to store context and meta information
- Providing FRED specific C entry points for events which have information
pushed to the extended stack frame, e.g. #PF and #DB.
- Providing FRED specific C entry points for #NMI and #MCE
- Implementing the FRED specific ASM entry points and the C code to
demultiplex the events
- Providing detection and initialization mechanisms and the necessary
tweaks in context switching, GS BASE handling etc.
The FRED integration aims for maximum code reuse vs. the existing IDT
implementation to the extent possible and the deviation in hot paths like
context switching are handled with alternatives to minimalize the
impact. The low level entry and exit paths are seperate due to the extended
stack frame and the hardware based GS BASE swichting and therefore have no
impact on IDT based systems.
It has been extensively tested on existing systems and on the FRED
simulation and as of now there are know outstanding problems.
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Merge tag 'x86-fred-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 FRED support from Thomas Gleixner:
"Support for x86 Fast Return and Event Delivery (FRED).
FRED is a replacement for IDT event delivery on x86 and addresses most
of the technical nightmares which IDT exposes:
1) Exception cause registers like CR2 need to be manually preserved
in nested exception scenarios.
2) Hardware interrupt stack switching is suboptimal for nested
exceptions as the interrupt stack mechanism rewinds the stack on
each entry which requires a massive effort in the low level entry
of #NMI code to handle this.
3) No hardware distinction between entry from kernel or from user
which makes establishing kernel context more complex than it needs
to be especially for unconditionally nestable exceptions like NMI.
4) NMI nesting caused by IRET unconditionally reenabling NMIs, which
is a problem when the perf NMI takes a fault when collecting a
stack trace.
5) Partial restore of ESP when returning to a 16-bit segment
6) Limitation of the vector space which can cause vector exhaustion
on large systems.
7) Inability to differentiate NMI sources
FRED addresses these shortcomings by:
1) An extended exception stack frame which the CPU uses to save
exception cause registers. This ensures that the meta information
for each exception is preserved on stack and avoids the extra
complexity of preserving it in software.
2) Hardware interrupt stack switching is non-rewinding if a nested
exception uses the currently interrupt stack.
3) The entry points for kernel and user context are separate and GS
BASE handling which is required to establish kernel context for
per CPU variable access is done in hardware.
4) NMIs are now nesting protected. They are only reenabled on the
return from NMI.
5) FRED guarantees full restore of ESP
6) FRED does not put a limitation on the vector space by design
because it uses a central entry points for kernel and user space
and the CPUstores the entry type (exception, trap, interrupt,
syscall) on the entry stack along with the vector number. The
entry code has to demultiplex this information, but this removes
the vector space restriction.
The first hardware implementations will still have the current
restricted vector space because lifting this limitation requires
further changes to the local APIC.
7) FRED stores the vector number and meta information on stack which
allows having more than one NMI vector in future hardware when the
required local APIC changes are in place.
The series implements the initial FRED support by:
- Reworking the existing entry and IDT handling infrastructure to
accomodate for the alternative entry mechanism.
- Expanding the stack frame to accomodate for the extra 16 bytes FRED
requires to store context and meta information
- Providing FRED specific C entry points for events which have
information pushed to the extended stack frame, e.g. #PF and #DB.
- Providing FRED specific C entry points for #NMI and #MCE
- Implementing the FRED specific ASM entry points and the C code to
demultiplex the events
- Providing detection and initialization mechanisms and the necessary
tweaks in context switching, GS BASE handling etc.
The FRED integration aims for maximum code reuse vs the existing IDT
implementation to the extent possible and the deviation in hot paths
like context switching are handled with alternatives to minimalize the
impact. The low level entry and exit paths are seperate due to the
extended stack frame and the hardware based GS BASE swichting and
therefore have no impact on IDT based systems.
It has been extensively tested on existing systems and on the FRED
simulation and as of now there are no outstanding problems"
* tag 'x86-fred-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits)
x86/fred: Fix init_task thread stack pointer initialization
MAINTAINERS: Add a maintainer entry for FRED
x86/fred: Fix a build warning with allmodconfig due to 'inline' failing to inline properly
x86/fred: Invoke FRED initialization code to enable FRED
x86/fred: Add FRED initialization functions
x86/syscall: Split IDT syscall setup code into idt_syscall_init()
KVM: VMX: Call fred_entry_from_kvm() for IRQ/NMI handling
x86/entry: Add fred_entry_from_kvm() for VMX to handle IRQ/NMI
x86/entry/calling: Allow PUSH_AND_CLEAR_REGS being used beyond actual entry code
x86/fred: Fixup fault on ERETU by jumping to fred_entrypoint_user
x86/fred: Let ret_from_fork_asm() jmp to asm_fred_exit_user when FRED is enabled
x86/traps: Add sysvec_install() to install a system interrupt handler
x86/fred: FRED entry/exit and dispatch code
x86/fred: Add a machine check entry stub for FRED
x86/fred: Add a NMI entry stub for FRED
x86/fred: Add a debug fault entry stub for FRED
x86/idtentry: Incorporate definitions/declarations of the FRED entries
x86/fred: Make exc_page_fault() work for FRED
x86/fred: Allow single-step trap and NMI when starting a new task
x86/fred: No ESPFIX needed when FRED is enabled
...
|
||
|
Linus Torvalds
|
ca7e917769 |
Rework of APIC enumeration and topology evaluation:
The current implementation has a couple of shortcomings:
- It fails to handle hybrid systems correctly.
- The APIC registration code which handles CPU number assignents is in
the middle of the APIC code and detached from the topology evaluation.
- The various mechanisms which enumerate APICs, ACPI, MPPARSE and guest
specific ones, tweak global variables as they see fit or in case of
XENPV just hack around the generic mechanisms completely.
- The CPUID topology evaluation code is sprinkled all over the vendor
code and reevaluates global variables on every hotplug operation.
- There is no way to analyze topology on the boot CPU before bringing up
the APs. This causes problems for infrastructure like PERF which needs
to size certain aspects upfront or could be simplified if that would be
possible.
- The APIC admission and CPU number association logic is incomprehensible
and overly complex and needs to be kept around after boot instead of
completing this right after the APIC enumeration.
This update addresses these shortcomings with the following changes:
- Rework the CPUID evaluation code so it is common for all vendors and
provides information about the APIC ID segments in a uniform way
independent of the number of segments (Thread, Core, Module, ..., Die,
Package) so that this information can be computed instead of rewriting
global variables of dubious value over and over.
- A few cleanups and simplifcations of the APIC, IO/APIC and related
interfaces to prepare for the topology evaluation changes.
- Seperation of the parser stages so the early evaluation which tries to
find the APIC address can be seperately overridden from the late
evaluation which enumerates and registers the local APIC as further
preparation for sanitizing the topology evaluation.
- A new registration and admission logic which
- encapsulates the inner workings so that parsers and guest logic
cannot longer fiddle in it
- uses the APIC ID segments to build topology bitmaps at registration
time
- provides a sane admission logic
- allows to detect the crash kernel case, where CPU0 does not run on
the real BSP, automatically. This is required to prevent sending
INIT/SIPI sequences to the real BSP which would reset the whole
machine. This was so far handled by a tedious command line
parameter, which does not even work in nested crash scenarios.
- Associates CPU number after the enumeration completed and prevents
the late registration of APICs, which was somehow tolerated before.
- Converting all parsers and guest enumeration mechanisms over to the
new interfaces.
This allows to get rid of all global variable tweaking from the parsers
and enumeration mechanisms and sanitizes the XEN[PV] handling so it can
use CPUID evaluation for the first time.
- Mopping up existing sins by taking the information from the APIC ID
segment bitmaps.
This evaluates hybrid systems correctly on the boot CPU and allows for
cleanups and fixes in the related drivers, e.g. PERF.
The series has been extensively tested and the minimal late fallout due to
a broken ACPI/MADT table has been addressed by tightening the admission
logic further.
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Merge tag 'x86-apic-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 APIC updates from Thomas Gleixner:
"Rework of APIC enumeration and topology evaluation.
The current implementation has a couple of shortcomings:
- It fails to handle hybrid systems correctly.
- The APIC registration code which handles CPU number assignents is
in the middle of the APIC code and detached from the topology
evaluation.
- The various mechanisms which enumerate APICs, ACPI, MPPARSE and
guest specific ones, tweak global variables as they see fit or in
case of XENPV just hack around the generic mechanisms completely.
- The CPUID topology evaluation code is sprinkled all over the vendor
code and reevaluates global variables on every hotplug operation.
- There is no way to analyze topology on the boot CPU before bringing
up the APs. This causes problems for infrastructure like PERF which
needs to size certain aspects upfront or could be simplified if
that would be possible.
- The APIC admission and CPU number association logic is
incomprehensible and overly complex and needs to be kept around
after boot instead of completing this right after the APIC
enumeration.
This update addresses these shortcomings with the following changes:
- Rework the CPUID evaluation code so it is common for all vendors
and provides information about the APIC ID segments in a uniform
way independent of the number of segments (Thread, Core, Module,
..., Die, Package) so that this information can be computed instead
of rewriting global variables of dubious value over and over.
- A few cleanups and simplifcations of the APIC, IO/APIC and related
interfaces to prepare for the topology evaluation changes.
- Seperation of the parser stages so the early evaluation which tries
to find the APIC address can be seperately overridden from the late
evaluation which enumerates and registers the local APIC as further
preparation for sanitizing the topology evaluation.
- A new registration and admission logic which
- encapsulates the inner workings so that parsers and guest logic
cannot longer fiddle in it
- uses the APIC ID segments to build topology bitmaps at
registration time
- provides a sane admission logic
- allows to detect the crash kernel case, where CPU0 does not run
on the real BSP, automatically. This is required to prevent
sending INIT/SIPI sequences to the real BSP which would reset
the whole machine. This was so far handled by a tedious command
line parameter, which does not even work in nested crash
scenarios.
- Associates CPU number after the enumeration completed and
prevents the late registration of APICs, which was somehow
tolerated before.
- Converting all parsers and guest enumeration mechanisms over to the
new interfaces.
This allows to get rid of all global variable tweaking from the
parsers and enumeration mechanisms and sanitizes the XEN[PV]
handling so it can use CPUID evaluation for the first time.
- Mopping up existing sins by taking the information from the APIC ID
segment bitmaps.
This evaluates hybrid systems correctly on the boot CPU and allows
for cleanups and fixes in the related drivers, e.g. PERF.
The series has been extensively tested and the minimal late fallout
due to a broken ACPI/MADT table has been addressed by tightening the
admission logic further"
* tag 'x86-apic-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (76 commits)
x86/topology: Ignore non-present APIC IDs in a present package
x86/apic: Build the x86 topology enumeration functions on UP APIC builds too
smp: Provide 'setup_max_cpus' definition on UP too
smp: Avoid 'setup_max_cpus' namespace collision/shadowing
x86/bugs: Use fixed addressing for VERW operand
x86/cpu/topology: Get rid of cpuinfo::x86_max_cores
x86/cpu/topology: Provide __num_[cores|threads]_per_package
x86/cpu/topology: Rename topology_max_die_per_package()
x86/cpu/topology: Rename smp_num_siblings
x86/cpu/topology: Retrieve cores per package from topology bitmaps
x86/cpu/topology: Use topology logical mapping mechanism
x86/cpu/topology: Provide logical pkg/die mapping
x86/cpu/topology: Simplify cpu_mark_primary_thread()
x86/cpu/topology: Mop up primary thread mask handling
x86/cpu/topology: Use topology bitmaps for sizing
x86/cpu/topology: Let XEN/PV use topology from CPUID/MADT
x86/xen/smp_pv: Count number of vCPUs early
x86/cpu/topology: Assign hotpluggable CPUIDs during init
x86/cpu/topology: Reject unknown APIC IDs on ACPI hotplug
x86/topology: Add a mechanism to track topology via APIC IDs
...
|
||
|
Linus Torvalds
|
d08c407f71 |
A large set of updates and features for timers and timekeeping:
- The hierarchical timer pull model
When timer wheel timers are armed they are placed into the timer wheel
of a CPU which is likely to be busy at the time of expiry. This is done
to avoid wakeups on potentially idle CPUs.
This is wrong in several aspects:
1) The heuristics to select the target CPU are wrong by
definition as the chance to get the prediction right is close
to zero.
2) Due to #1 it is possible that timers are accumulated on a
single target CPU
3) The required computation in the enqueue path is just overhead for
dubious value especially under the consideration that the vast
majority of timer wheel timers are either canceled or rearmed
before they expire.
The timer pull model avoids the above by removing the target
computation on enqueue and queueing timers always on the CPU on which
they get armed.
This is achieved by having separate wheels for CPU pinned timers and
global timers which do not care about where they expire.
As long as a CPU is busy it handles both the pinned and the global
timers which are queued on the CPU local timer wheels.
When a CPU goes idle it evaluates its own timer wheels:
- If the first expiring timer is a pinned timer, then the global
timers can be ignored as the CPU will wake up before they expire.
- If the first expiring timer is a global timer, then the expiry time
is propagated into the timer pull hierarchy and the CPU makes sure
to wake up for the first pinned timer.
The timer pull hierarchy organizes CPUs in groups of eight at the
lowest level and at the next levels groups of eight groups up to the
point where no further aggregation of groups is required, i.e. the
number of levels is log8(NR_CPUS). The magic number of eight has been
established by experimention, but can be adjusted if needed.
In each group one busy CPU acts as the migrator. It's only one CPU to
avoid lock contention on remote timer wheels.
The migrator CPU checks in its own timer wheel handling whether there
are other CPUs in the group which have gone idle and have global timers
to expire. If there are global timers to expire, the migrator locks the
remote CPU timer wheel and handles the expiry.
Depending on the group level in the hierarchy this handling can require
to walk the hierarchy downwards to the CPU level.
Special care is taken when the last CPU goes idle. At this point the
CPU is the systemwide migrator at the top of the hierarchy and it
therefore cannot delegate to the hierarchy. It needs to arm its own
timer device to expire either at the first expiring timer in the
hierarchy or at the first CPU local timer, which ever expires first.
This completely removes the overhead from the enqueue path, which is
e.g. for networking a true hotpath and trades it for a slightly more
complex idle path.
This has been in development for a couple of years and the final series
has been extensively tested by various teams from silicon vendors and
ran through extensive CI.
There have been slight performance improvements observed on network
centric workloads and an Intel team confirmed that this allows them to
power down a die completely on a mult-die socket for the first time in
a mostly idle scenario.
There is only one outstanding ~1.5% regression on a specific overloaded
netperf test which is currently investigated, but the rest is either
positive or neutral performance wise and positive on the power
management side.
- Fixes for the timekeeping interpolation code for cross-timestamps:
cross-timestamps are used for PTP to get snapshots from hardware timers
and interpolated them back to clock MONOTONIC. The changes address a
few corner cases in the interpolation code which got the math and logic
wrong.
- Simplifcation of the clocksource watchdog retry logic to automatically
adjust to handle larger systems correctly instead of having more
incomprehensible command line parameters.
- Treewide consolidation of the VDSO data structures.
- The usual small improvements and cleanups all over the place.
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Merge tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"A large set of updates and features for timers and timekeeping:
- The hierarchical timer pull model
When timer wheel timers are armed they are placed into the timer
wheel of a CPU which is likely to be busy at the time of expiry.
This is done to avoid wakeups on potentially idle CPUs.
This is wrong in several aspects:
1) The heuristics to select the target CPU are wrong by
definition as the chance to get the prediction right is
close to zero.
2) Due to #1 it is possible that timers are accumulated on
a single target CPU
3) The required computation in the enqueue path is just overhead
for dubious value especially under the consideration that the
vast majority of timer wheel timers are either canceled or
rearmed before they expire.
The timer pull model avoids the above by removing the target
computation on enqueue and queueing timers always on the CPU on
which they get armed.
This is achieved by having separate wheels for CPU pinned timers
and global timers which do not care about where they expire.
As long as a CPU is busy it handles both the pinned and the global
timers which are queued on the CPU local timer wheels.
When a CPU goes idle it evaluates its own timer wheels:
- If the first expiring timer is a pinned timer, then the global
timers can be ignored as the CPU will wake up before they
expire.
- If the first expiring timer is a global timer, then the expiry
time is propagated into the timer pull hierarchy and the CPU
makes sure to wake up for the first pinned timer.
The timer pull hierarchy organizes CPUs in groups of eight at the
lowest level and at the next levels groups of eight groups up to
the point where no further aggregation of groups is required, i.e.
the number of levels is log8(NR_CPUS). The magic number of eight
has been established by experimention, but can be adjusted if
needed.
In each group one busy CPU acts as the migrator. It's only one CPU
to avoid lock contention on remote timer wheels.
The migrator CPU checks in its own timer wheel handling whether
there are other CPUs in the group which have gone idle and have
global timers to expire. If there are global timers to expire, the
migrator locks the remote CPU timer wheel and handles the expiry.
Depending on the group level in the hierarchy this handling can
require to walk the hierarchy downwards to the CPU level.
Special care is taken when the last CPU goes idle. At this point
the CPU is the systemwide migrator at the top of the hierarchy and
it therefore cannot delegate to the hierarchy. It needs to arm its
own timer device to expire either at the first expiring timer in
the hierarchy or at the first CPU local timer, which ever expires
first.
This completely removes the overhead from the enqueue path, which
is e.g. for networking a true hotpath and trades it for a slightly
more complex idle path.
This has been in development for a couple of years and the final
series has been extensively tested by various teams from silicon
vendors and ran through extensive CI.
There have been slight performance improvements observed on network
centric workloads and an Intel team confirmed that this allows them
to power down a die completely on a mult-die socket for the first
time in a mostly idle scenario.
There is only one outstanding ~1.5% regression on a specific
overloaded netperf test which is currently investigated, but the
rest is either positive or neutral performance wise and positive on
the power management side.
- Fixes for the timekeeping interpolation code for cross-timestamps:
cross-timestamps are used for PTP to get snapshots from hardware
timers and interpolated them back to clock MONOTONIC. The changes
address a few corner cases in the interpolation code which got the
math and logic wrong.
- Simplifcation of the clocksource watchdog retry logic to
automatically adjust to handle larger systems correctly instead of
having more incomprehensible command line parameters.
- Treewide consolidation of the VDSO data structures.
- The usual small improvements and cleanups all over the place"
* tag 'timers-core-2024-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (62 commits)
timer/migration: Fix quick check reporting late expiry
tick/sched: Fix build failure for CONFIG_NO_HZ_COMMON=n
vdso/datapage: Quick fix - use asm/page-def.h for ARM64
timers: Assert no next dyntick timer look-up while CPU is offline
tick: Assume timekeeping is correctly handed over upon last offline idle call
tick: Shut down low-res tick from dying CPU
tick: Split nohz and highres features from nohz_mode
tick: Move individual bit features to debuggable mask accesses
tick: Move got_idle_tick away from common flags
tick: Assume the tick can't be stopped in NOHZ_MODE_INACTIVE mode
tick: Move broadcast cancellation up to CPUHP_AP_TICK_DYING
tick: Move tick cancellation up to CPUHP_AP_TICK_DYING
tick: Start centralizing tick related CPU hotplug operations
tick/sched: Don't clear ts::next_tick again in can_stop_idle_tick()
tick/sched: Rename tick_nohz_stop_sched_tick() to tick_nohz_full_stop_tick()
tick: Use IS_ENABLED() whenever possible
tick/sched: Remove useless oneshot ifdeffery
tick/nohz: Remove duplicate between lowres and highres handlers
tick/nohz: Remove duplicate between tick_nohz_switch_to_nohz() and tick_setup_sched_timer()
hrtimer: Select housekeeping CPU during migration
...
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Pawan Gupta
|
8076fcde01 |
x86/rfds: Mitigate Register File Data Sampling (RFDS)
RFDS is a CPU vulnerability that may allow userspace to infer kernel stale data previously used in floating point registers, vector registers and integer registers. RFDS only affects certain Intel Atom processors. Intel released a microcode update that uses VERW instruction to clear the affected CPU buffers. Unlike MDS, none of the affected cores support SMT. Add RFDS bug infrastructure and enable the VERW based mitigation by default, that clears the affected buffers just before exiting to userspace. Also add sysfs reporting and cmdline parameter "reg_file_data_sampling" to control the mitigation. For details see: Documentation/admin-guide/hw-vuln/reg-file-data-sampling.rst Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> |
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Pawan Gupta
|
4e42765d1b |
Documentation/hw-vuln: Add documentation for RFDS
Add the documentation for transient execution vulnerability Register File Data Sampling (RFDS) that affects Intel Atom CPUs. Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> |
||
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Linus Torvalds
|
045395d86a |
cgroup: Changes for 6.9
A quiet cycle. One trivial doc update patch. Two patches to drop now defunct memory_spread_slab feature from cgroup1 cpuset. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZe7MVQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGR59APwO8h/GCRH0KovpemkjsIHxicWMlvfHVleIdS4l FY7lLgD+JGucXcxd4YM/ZAZkj9pSUvrEm46n+Jrst7GFH8lfUQ0= =YY0C -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: "A quiet cycle. One trivial doc update patch. Two patches to drop the now defunct memory_spread_slab feature from cgroup1 cpuset" * tag 'cgroup-for-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup/cpuset: Mark memory_spread_slab as obsolete cgroup/cpuset: Remove cpuset_do_slab_mem_spread() docs: cgroup-v1: add missing code-block tags |
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Linus Torvalds
|
ff887eb07c |
workqueue: Changes for v6.9
This cycle, a lot of workqueue changes including some that are significant and invasive. - During v6.6 cycle, unbound workqueues were updated so that they are more topology aware and flexible, which among other things improved workqueue behavior on modern multi-L3 CPUs. In the process, |
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Rafael J. Wysocki
|
32b88f5928 |
Merge branch 'pm-cpufreq'
Merge cpufreq changes for 6.9-rc1: - Enable preferred core support in the amd-pstate cpufreq driver (Meng Li). - Fix min_perf assignment in amd_pstate_adjust_perf() and make the min/max limit perf values in amd-pstate always stay within the (highest perf, lowest perf) range (Tor Vic, Meng Li). - Change default transition delay in cpufreq to 2ms (Qais Yousef). - Drop long-unused cpudata::prev_cummulative_iowait from the intel_pstate cpufreq driver (Jiri Slaby). - Allow intel_pstate to assign model-specific values to strings used in the EPP sysfs interface and make it do so on Meteor Lake (Srinivas Pandruvada). - Remove references to 10ms minimum sampling rate from comments in the cpufreq code (Pierre Gondois). - Prevent scaling_cur_freq from exceeding scaling_max_freq when the latter is an inefficient frequency (Shivnandan Kumar). - Honour transition_latency over transition_delay_us in cpufreq (Qais Yousef). - Stop unregistering cpufreq cooling on CPU hot-remove (Viresh Kumar). - General enhancements / cleanups to ARM cpufreq drivers (tianyu2, Nícolas F. R. A. Prado, Erick Archer, Arnd Bergmann, Anastasia Belova). - Update cpufreq-dt-platdev to block/approve devices (Richard Acayan). - Make the SCMI cpufreq driver get a transition delay value from firmware (Pierre Gondois). * pm-cpufreq: (28 commits) cpufreq: scmi: Set transition_delay_us firmware: arm_scmi: Populate fast channel rate_limit firmware: arm_scmi: Populate perf commands rate_limit cpufreq: Don't unregister cpufreq cooling on CPU hotplug cpufreq: Honour transition_latency over transition_delay_us cpufreq: Limit resolving a frequency to policy min/max cpufreq: amd-pstate: adjust min/max limit perf cpufreq: Remove references to 10ms min sampling rate cpufreq: intel_pstate: Update default EPPs for Meteor Lake cpufreq: intel_pstate: Allow model specific EPPs cpufreq: qcom-hw: add CONFIG_COMMON_CLK dependency cpufreq: dt-platdev: block SDM670 in cpufreq-dt-platdev cpufreq: intel_pstate: remove cpudata::prev_cummulative_iowait cpufreq: Change default transition delay to 2ms cpufreq: amd-pstate: Fix min_perf assignment in amd_pstate_adjust_perf() Documentation: PM: amd-pstate: Fix section title underline Documentation: introduce amd-pstate preferrd core mode kernel command line options Documentation: amd-pstate: introduce amd-pstate preferred core cpufreq: amd-pstate: Update amd-pstate preferred core ranking dynamically ACPI: cpufreq: Add highest perf change notification ... |
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Rafael J. Wysocki
|
86b84bdd5c |
Merge branch 'pm-sleep'
Merge changes related to system-wide power management for 6.9-rc1: - Fix and clean up system suspend statistics collection (Rafael Wysocki). - Simplify device suspend and resume handling in the power management core code (Rafael Wysocki). - Add support for LZ4 compression algorithm to the hibernation image creation and loading code (Nikhil V). - Fix PCI hibernation support description (Yiwei Lin). - Make hibernation take set_memory_ro() return values into account as appropriate (Christophe Leroy). - Set mem_sleep_current during kernel command line setup to avoid an ordering issue with handling it (Maulik Shah). - Fix wake IRQs handling when pm_runtime_force_suspend() is used as a driver's system suspend callback (Qingliang Li). * pm-sleep: (21 commits) PM: sleep: wakeirq: fix wake irq warning in system suspend PM: suspend: Set mem_sleep_current during kernel command line setup PM: hibernate: Don't ignore return from set_memory_ro() PM: hibernate: Support to select compression algorithm Documentation: PM: Fix PCI hibernation support description PM: hibernate: Add support for LZ4 compression for hibernation PM: hibernate: Move to crypto APIs for LZO compression PM: hibernate: Rename lzo* to make it generic PM: sleep: Call dpm_async_fn() directly in each suspend phase PM: sleep: Move devices to new lists earlier in each suspend phase PM: sleep: Move some assignments from under a lock PM: sleep: stats: Log errors right after running suspend callbacks PM: sleep: stats: Use locking in dpm_save_failed_dev() PM: sleep: stats: Call dpm_save_failed_step() at most once per phase PM: sleep: stats: Define suspend_stats next to the code using it PM: sleep: stats: Use unsigned int for success and failure counters PM: sleep: stats: Use an array of step failure counters PM: sleep: stats: Use array of suspend step names PM: sleep: Relocate two device PM core functions PM: sleep: Simplify dpm_suspended_list walk in dpm_resume() ... |
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Matthew Sakai
|
cb824724dc |
dm vdo: document minimum metadata size requirements
Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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Thorsten Leemhuis
|
0c8e9b538e |
docs: verify/bisect: fixes, finetuning, and support for Arch
Assorted changes for the recently added document. Improvements: * Add instructions for installing required software on Arch Linux. Fixes: * Move a 'git remote add -t master stable [...]' from a totally wrong to the right place. * Fix two anchors. * Add two required packages to the openSUSE install instructions. Fine tuning: * Improve the reference section about downloading Linux mainline sources to make it more obvious that those are alternatives. * Include the full instructions for git bundles to ensure the remote gets the right name; that way the text also works stand alone. * Install ncurses and qt headers for use of menuconfig and xconfig by default, but tell users that they are free to omit them. * Mention ahead of time which version number are meant as example in commands used during the step-by-step guide. * Mention that 'kernel-install remove' might do a incomplete job. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <6592c9ef4244faa484b4113f088dbc1beca61015.1709716794.git.linux@leemhuis.info> |
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Yicong Yang
|
b037e40a6a |
docs: perf: Fix build warning of hisi-pcie-pmu.rst
`make htmldocs SPHINXDIRS="admin-guide"` shows below warnings:
Documentation/admin-guide/perf/hisi-pcie-pmu.rst:48: ERROR: Unexpected indentation.
Documentation/admin-guide/perf/hisi-pcie-pmu.rst:49: WARNING: Block quote ends without a blank line; unexpected unindent.
Fix this.
Closes: https://lore.kernel.org/lkml/20231011172250.5a6498e5@canb.auug.org.au/
Fixes:
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Ken Raeburn
|
fd5b92b4ce |
dm vdo: document log_level parameter
Signed-off-by: Ken Raeburn <raeburn@redhat.com> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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Ji Sheng Teoh
|
49925c1c5a |
docs: perf: Add description for StarFive's StarLink PMU
StarFive StarLink PMU support monitoring L3 memory system PMU events. Add documentation to describe StarFive StarLink PMU support and it's usage. Signed-off-by: Ji Sheng Teoh <jisheng.teoh@starfivetech.com> Link: https://lore.kernel.org/r/20240229072720.3987876-4-jisheng.teoh@starfivetech.com Signed-off-by: Will Deacon <will@kernel.org> |
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Junhao He
|
89a032923d |
docs: perf: Update usage for target filter of hisi-pcie-pmu
One of the "port" and "bdf" target filter interface must be set, and the related events should preferably used in the same group. Update the usage in the documentation. Signed-off-by: Junhao He <hejunhao3@huawei.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20240223103359.18669-9-yangyicong@huawei.com Signed-off-by: Will Deacon <will@kernel.org> |
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Thorsten Leemhuis
|
7812967276 |
docs: new text on bisecting which also covers bug validation
Add a second document on bisecting regressions explaining the whole process from beginning to end -- while also describing how to validate if a problem is still present in mainline. This "two in one" approach is possible, as checking whenever a bug is in mainline is one of the first steps before performing a bisection anyway and thus needs to be described. Due to this approach the text also works quite nicely in conjunction with Documentation/admin-guide/reporting-issues.rst, as it covers all typical cases where users will need to build a kernel in exactly the same order. The text targets users that normally run kernels from their Linux distributor who might never have compiled their own kernel. This aim is why the first kernel built while following this guide is generated from the latest mainline codebase. This will rule out that the regression (a) was fixed already and (b) is caused by config change a vendor distributor performed; checking mainline will furthermore (c) determine if the issue is something that needs to be reported to the regular developers or the stable team (this is needed even when readers bisect within a stable series). Only then are readers instructed to build their own variant of the 'good' kernel to validate the trimmed .config file created during early in the guide, as performing a bisection with a broken one would be a waste of time. There is a small downside of this order: readers might have to go back to testing mainline, if it turns out there is a problem with their .config. But that should be rare -- and if the regression was already fixed readers might not get to this point anyway. Hence in the end this order should mean that readers built less kernels overall. This sequence allows the text to easily cover the "check if a bug is present in the upstream kernel" case while only making things a tiny bit more complicated. The text tries to prevent readers from running into many mistakes users are known to frequently make. The steps required for this might look superfluous for people that are already familiar with bisections -- but anyone with that knowledge should be able to adapt the instructions to their use-case or will not need this text at all. Style and structure of the text match the one Documentation/admin-guide/quickly-build-trimmed-linux.rst uses. Quite a few paragraphs are even copied from there and not changed at all or only slightly. This will complicate maintenance, as some future changes to one of these documents will have to be replicated in the other. But this is the lesser evil: solutions like "sending readers from one document over to the other" or "extracting the common parts into a separate document" might work in other cases, but would be too confusing here given the topic and the target audience. Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info> [jc: Undo spurious removal of subsection header line] Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <02b084a06de4ad61ac4ecd92b9265d4df4d03d71.1709282441.git.linux@leemhuis.info> |
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Xiongwei Song
|
3ab67a9ce8 |
cgroup/cpuset: Mark memory_spread_slab as obsolete
We've removed the SLAB allocator, cpuset_do_slab_mem_spread() and SLAB_MEM_SPREAD, memory_spread_slab is a no-op now. We can mark memory_spread_slab as obsolete in case someone still wants to use it after cpuset_do_slab_mem_spread() removed. For more details, please check [1]. [1] https://lore.kernel.org/lkml/32bc1403-49da-445a-8c00-9686a3b0d6a3@redhat.com/T/#m8e292e21b00f95a4bb8086371fa7387fa4ea8f60 tj: Description and cosmetic updates. Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com> Acked-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Adam Li
|
12a686c2e7 |
net: make SK_MEMORY_PCPU_RESERV tunable
This patch adds /proc/sys/net/core/mem_pcpu_rsv sysctl file,
to make SK_MEMORY_PCPU_RESERV tunable.
Commit
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Boqun Feng
|
3add00be5f | Merge branches 'rcu-doc.2024.02.14a', 'rcu-nocb.2024.02.14a', 'rcu-exp.2024.02.14a', 'rcu-tasks.2024.02.26a' and 'rcu-misc.2024.02.14a' into rcu.2024.02.26a | ||
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Maxime Ripard
|
89ac522d45
|
drm/edid/firmware: Remove built-in EDIDs
The EDID firmware loading mechanism introduced a few built-in EDIDs that
could be forced on any connector, bypassing the EDIDs it exposes.
While convenient, this limited set of EDIDs doesn't take into account
the connector type, and we can end up with an EDID that is completely
invalid for a given connector.
For example, the edid/800x600.bin file matches the following EDID:
edid-decode (hex):
00 ff ff ff ff ff ff 00 31 d8 00 00 00 00 00 00
05 16 01 03 6d 1b 14 78 ea 5e c0 a4 59 4a 98 25
20 50 54 01 00 00 45 40 01 01 01 01 01 01 01 01
01 01 01 01 01 01 a0 0f 20 00 31 58 1c 20 28 80
14 00 15 d0 10 00 00 1e 00 00 00 ff 00 4c 69 6e
75 78 20 23 30 0a 20 20 20 20 00 00 00 fd 00 3b
3d 24 26 05 00 0a 20 20 20 20 20 20 00 00 00 fc
00 4c 69 6e 75 78 20 53 56 47 41 0a 20 20 00 c2
----------------
Block 0, Base EDID:
EDID Structure Version & Revision: 1.3
Vendor & Product Identification:
Manufacturer: LNX
Model: 0
Made in: week 5 of 2012
Basic Display Parameters & Features:
Analog display
Signal Level Standard: 0.700 : 0.000 : 0.700 V p-p
Blank level equals black level
Sync: Separate Composite Serration
Maximum image size: 27 cm x 20 cm
Gamma: 2.20
DPMS levels: Standby Suspend Off
RGB color display
First detailed timing is the preferred timing
Color Characteristics:
Red : 0.6416, 0.3486
Green: 0.2919, 0.5957
Blue : 0.1474, 0.1250
White: 0.3125, 0.3281
Established Timings I & II:
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
Standard Timings:
DMT 0x09: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz
Detailed Timing Descriptors:
DTD 1: 800x600 60.316541 Hz 4:3 37.879 kHz 40.000000 MHz (277 mm x 208 mm)
Hfront 40 Hsync 128 Hback 88 Hpol P
Vfront 1 Vsync 4 Vback 23 Vpol P
Display Product Serial Number: 'Linux #0'
Display Range Limits:
Monitor ranges (GTF): 59-61 Hz V, 36-38 kHz H, max dotclock 50 MHz
Display Product Name: 'Linux SVGA'
Checksum: 0xc2
So, an analog monitor EDID. However, if the connector was an HDMI
monitor for example, it breaks the HDMI specification that requires,
among other things, a digital display, the VIC 1 mode and an HDMI Forum
Vendor Specific Data Block in an CTA-861 extension.
We thus end up with a completely invalid EDID, which thus might confuse
HDMI-related code that could parse it.
After some discussions on IRC, we identified mainly two ways to fix
this:
- We can either create more EDIDs for each connector type to provide
a built-in EDID that matches the resolution passed in the name, and
still be a sensible EDID for that connector type;
- Or we can just prevent the EDID to be exposed to userspace if it's
built-in.
Or possibly both.
However, the conclusion was that maybe we just don't need the built-in
EDIDs at all and we should just get rid of them. So here we are.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240221092636.691701-1-mripard@kernel.org
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SeongJae Park
|
75c40c2509 |
Docs/admin-guide/mm/damon/reclaim: document auto-tuning parameters
Update DAMON_RECLAIM usage document for the user/self feedback based auto-tuning of the quota. Link: https://lkml.kernel.org/r/20240219194431.159606-21-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
57e88e86a1 |
Docs/admin-guide/mm/damon/usage: document quota goal metric file
Update DAMON usage document for the quota goal target_metric file. [sj@kernel.org: fix a typo on the auto-tuning design reference link] Link: https://lkml.kernel.org/r/20240221170852.55529-3-sj@kernel.org Link: https://lkml.kernel.org/r/20240219194431.159606-18-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
a6068d6dfa |
Docs/admin-guide/mm/damon/usage: document effective_bytes file
Update DAMON usage document for the effective quota file of the DAMON sysfs interface. Link: https://lkml.kernel.org/r/20240219194431.159606-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Baoquan He
|
55c49fee57 |
mm/vmalloc: remove vmap_area_list
Earlier, vmap_area_list is exported to vmcoreinfo so that makedumpfile get the base address of vmalloc area. Now, vmap_area_list is empty, so export VMALLOC_START to vmcoreinfo instead, and remove vmap_area_list. [urezki@gmail.com: fix a warning in the crash_save_vmcoreinfo_init()] Link: https://lkml.kernel.org/r/20240111192329.449189-1-urezki@gmail.com Link: https://lkml.kernel.org/r/20240102184633.748113-6-urezki@gmail.com Signed-off-by: Baoquan He <bhe@redhat.com> Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Acked-by: Lorenzo Stoakes <lstoakes@gmail.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Kazuhito Hagio <k-hagio-ab@nec.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sony.com> Cc: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Feng Tang
|
2e3fc6ca52 |
panic: add option to dump blocked tasks in panic_print
For debugging kernel panics and other bugs, there is already an option of panic_print to dump all tasks' call stacks. On today's large servers running many containers, there could be thousands of tasks or more, and this will print out huge amount of call stacks, taking a lot of time (for serial console which is main target user case of panic_print). And in many cases, only those several tasks being blocked are key for the panic, so add an option to only dump blocked tasks' call stacks. [akpm@linux-foundation.org: clarify documentation a little] Link: https://lkml.kernel.org/r/20240202132042.3609657-1-feng.tang@intel.com Signed-off-by: Feng Tang <feng.tang@intel.com> Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Alexey Gladkov
|
9220066ea8 |
docs: add information about ipc sysctls limitations
After |
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SeongJae Park
|
7d8cebb963 |
Docs/admin-guide/mm/damon/usage: fix wrong quotas diabling condition
After the introduction of DAMOS quotas, DAMOS quotas is not disabled if both size and time quotas are zero but the quota goal is set. The new rule is also applied to DAMON sysfs interface, but the usage doc is not updated. Update it. Link: https://lkml.kernel.org/r/20240217005842.87348-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
2d89957c93 |
Docs/mm/damon: move monitoring target regions setup detail from the usage to the design document
Design doc is aimed to have all concept level details, while the usage doc is focused on only how the features can be used. Some details about monitoring target regions construction is on the usage doc. Move the details about the monitoring target regions construction differences for DAMON operations set from the usage to the design doc. Link: https://lkml.kernel.org/r/20240217005842.87348-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
669971b406 |
Docs/mm/damon: move DAMON operation sets list from the usage to the design document
The list of DAMON operation sets and their explanation, which may better to be on design document, is written on the usage document. Move the detail to design document and make the usage document only reference the design document. [sj@kernel.org: fix a typo on a reference link] Link: https://lkml.kernel.org/r/20240221170852.55529-2-sj@kernel.org Link: https://lkml.kernel.org/r/20240217005842.87348-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
|
5b7708e6a8 |
Docs/mm/damon: move the list of DAMOS actions to design doc
DAMOS operation actions are explained nearly twice on the DAMON usage document, once for the sysfs interface, and then again for the debugfs interface. Duplication is bad. Also it would better to keep this kind of concept level details in design document and keep the usage document small and focus on only the usage. Move the list to design document and update usage document to reference it. Link: https://lkml.kernel.org/r/20240217005842.87348-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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|
Nikhil V
|
3fec6e5961 |
PM: hibernate: Support to select compression algorithm
Currently the default compression algorithm is selected based on
compile time options. Introduce a module parameter "hibernate.compressor"
to override this behaviour.
Different compression algorithms have different characteristics and
hibernation may benefit when it uses any of these algorithms, especially
when a secondary algorithm(LZ4) offers better decompression speeds over
a default algorithm(LZO), which in turn reduces hibernation image
restore time.
Users can override the default algorithm in two ways:
1) Passing "hibernate.compressor" as kernel command line parameter.
Usage:
LZO: hibernate.compressor=lzo
LZ4: hibernate.compressor=lz4
2) Specifying the algorithm at runtime.
Usage:
LZO: echo lzo > /sys/module/hibernate/parameters/compressor
LZ4: echo lz4 > /sys/module/hibernate/parameters/compressor
Currently LZO and LZ4 are the supported algorithms. LZO is the default
compression algorithm used with hibernation.
Signed-off-by: Nikhil V <quic_nprakash@quicinc.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
||
|
Gregory Price
|
fa3bea4e1f |
mm/mempolicy: introduce MPOL_WEIGHTED_INTERLEAVE for weighted interleaving
When a system has multiple NUMA nodes and it becomes bandwidth hungry,
using the current MPOL_INTERLEAVE could be an wise option.
However, if those NUMA nodes consist of different types of memory such as
socket-attached DRAM and CXL/PCIe attached DRAM, the round-robin based
interleave policy does not optimally distribute data to make use of their
different bandwidth characteristics.
Instead, interleave is more effective when the allocation policy follows
each NUMA nodes' bandwidth weight rather than a simple 1:1 distribution.
This patch introduces a new memory policy, MPOL_WEIGHTED_INTERLEAVE,
enabling weighted interleave between NUMA nodes. Weighted interleave
allows for proportional distribution of memory across multiple numa nodes,
preferably apportioned to match the bandwidth of each node.
For example, if a system has 1 CPU node (0), and 2 memory nodes (0,1),
with bandwidth of (100GB/s, 50GB/s) respectively, the appropriate weight
distribution is (2:1).
Weights for each node can be assigned via the new sysfs extension:
/sys/kernel/mm/mempolicy/weighted_interleave/
For now, the default value of all nodes will be `1`, which matches the
behavior of standard 1:1 round-robin interleave. An extension will be
added in the future to allow default values to be registered at kernel and
device bringup time.
The policy allocates a number of pages equal to the set weights. For
example, if the weights are (2,1), then 2 pages will be allocated on node0
for every 1 page allocated on node1.
The new flag MPOL_WEIGHTED_INTERLEAVE can be used in set_mempolicy(2)
and mbind(2).
Some high level notes about the pieces of weighted interleave:
current->il_prev:
Tracks the node previously allocated from.
current->il_weight:
The active weight of the current node (current->il_prev)
When this reaches 0, current->il_prev is set to the next node
and current->il_weight is set to the next weight.
weighted_interleave_nodes:
Counts the number of allocations as they occur, and applies the
weight for the current node. When the weight reaches 0, switch
to the next node. Operates only on task->mempolicy.
weighted_interleave_nid:
Gets the total weight of the nodemask as well as each individual
node weight, then calculates the node based on the given index.
Operates on VMA policies.
bulk_array_weighted_interleave:
Gets the total weight of the nodemask as well as each individual
node weight, then calculates the number of "interleave rounds" as
well as any delta ("partial round"). Calculates the number of
pages for each node and allocates them.
If a node was scheduled for interleave via interleave_nodes, the
current weight will be allocated first.
Operates only on the task->mempolicy.
One piece of complexity is the interaction between a recent refactor which
split the logic to acquire the "ilx" (interleave index) of an allocation
and the actually application of the interleave. If a call to
alloc_pages_mpol() were made with a weighted-interleave policy and ilx set
to NO_INTERLEAVE_INDEX, weighted_interleave_nodes() would operate on a VMA
policy - violating the description above.
An inspection of all callers of alloc_pages_mpol() shows that all external
callers set ilx to `0`, an index value, or will call get_vma_policy() to
acquire the ilx.
For example, mm/shmem.c may call into alloc_pages_mpol. The call stacks
all set (pgoff_t ilx) or end up in `get_vma_policy()`. This enforces the
`weighted_interleave_nodes()` and `weighted_interleave_nid()` policy
requirements (task/vma respectively).
Link: https://lkml.kernel.org/r/20240202170238.90004-4-gregory.price@memverge.com
Suggested-by: Hasan Al Maruf <Hasan.Maruf@amd.com>
Signed-off-by: Gregory Price <gregory.price@memverge.com>
Co-developed-by: Rakie Kim <rakie.kim@sk.com>
Signed-off-by: Rakie Kim <rakie.kim@sk.com>
Co-developed-by: Honggyu Kim <honggyu.kim@sk.com>
Signed-off-by: Honggyu Kim <honggyu.kim@sk.com>
Co-developed-by: Hyeongtak Ji <hyeongtak.ji@sk.com>
Signed-off-by: Hyeongtak Ji <hyeongtak.ji@sk.com>
Co-developed-by: Srinivasulu Thanneeru <sthanneeru.opensrc@micron.com>
Signed-off-by: Srinivasulu Thanneeru <sthanneeru.opensrc@micron.com>
Co-developed-by: Ravi Jonnalagadda <ravis.opensrc@micron.com>
Signed-off-by: Ravi Jonnalagadda <ravis.opensrc@micron.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
SeongJae Park
|
ec28cf530c |
Docs/admin-guide/mm/damon/usage: update for monitor_on renaming
Update DAMON debugfs interface sections on the usage document to reflect the fact that 'monitor_on' file has renamed to 'monitor_on_DEPRECATED'. Link: https://lkml.kernel.org/r/20240130013549.89538-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
cf3810cc31 |
Docs/admin-guide/mm/damon/usage: document 'DEPRECATED' file of DAMON debugfs interface
Document the newly added DAMON debugfs interface deprecation notice file on the usage document. Link: https://lkml.kernel.org/r/20240130013549.89538-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <2023002089@link.tyut.edu.cn> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
SeongJae Park
|
5af28560fe |
Docs/admin-guide/mm/damon/usage: use sysfs interface for tracepoints example
Patch series "mm/damon: make DAMON debugfs interface deprecation
unignorable".
DAMON debugfs interface is deprecated in February 2023, by commit
|
||
|
Xuewen Yan
|
ccdec92198 |
workqueue: Control intensive warning threshold through cmdline
When CONFIG_WQ_CPU_INTENSIVE_REPORT is set, the kernel will report the work functions which violate the intensive_threshold_us repeatedly. And now, only when the violate times exceed 4 and is a power of 2, the kernel warning could be triggered. However, sometimes, even if a long work execution time occurs only once, it may cause other work to be delayed for a long time. This may also cause some problems sometimes. In order to freely control the threshold of warninging, a boot argument is added so that the user can control the warning threshold to be printed. At the same time, keep the exponential backoff to prevent reporting too much. By default, the warning threshold is 4. tj: Updated kernel-parameters.txt description. Signed-off-by: Xuewen Yan <xuewen.yan@unisoc.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Carlos Bilbao
|
23764f18f7 |
docs: Correct formatting of title in admin-guide/index.rst
Adjust the title of "The Linux kernel user's and administrator's guide" to adhere to the expected reStructuredText (rst) formatting, using double equal signs for the main header. Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240109155643.3489369-2-carlos.bilbao@amd.com |
||
|
Feng Tang
|
2ed08e4bc5 |
clocksource: Scale the watchdog read retries automatically
On a 8-socket server the TSC is wrongly marked as 'unstable' and disabled
during boot time on about one out of 120 boot attempts:
clocksource: timekeeping watchdog on CPU227: wd-tsc-wd excessive read-back delay of 153560ns vs. limit of 125000ns,
wd-wd read-back delay only 11440ns, attempt 3, marking tsc unstable
tsc: Marking TSC unstable due to clocksource watchdog
TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'.
sched_clock: Marking unstable (119294969739, 159204297)<-(125446229205, -5992055152)
clocksource: Checking clocksource tsc synchronization from CPU 319 to CPUs 0,99,136,180,210,542,601,896.
clocksource: Switched to clocksource hpet
The reason is that for platform with a large number of CPUs, there are
sporadic big or huge read latencies while reading the watchog/clocksource
during boot or when system is under stress work load, and the frequency and
maximum value of the latency goes up with the number of online CPUs.
The cCurrent code already has logic to detect and filter such high latency
case by reading the watchdog twice and checking the two deltas. Due to the
randomness of the latency, there is a low probabilty that the first delta
(latency) is big, but the second delta is small and looks valid. The
watchdog code retries the readouts by default twice, which is not
necessarily sufficient for systems with a large number of CPUs.
There is a command line parameter 'max_cswd_read_retries' which allows to
increase the number of retries, but that's not user friendly as it needs to
be tweaked per system. As the number of required retries is proportional to
the number of online CPUs, this parameter can be calculated at runtime.
Scale and enlarge the number of retries according to the number of online
CPUs and remove the command line parameter completely.
[ tglx: Massaged change log and comments ]
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Jin Wang <jin1.wang@intel.com>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Reviewed-by: Waiman Long <longman@redhat.com>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20240221060859.1027450-1-feng.tang@intel.com
|
||
|
Matthew Sakai
|
512039b41b |
dm vdo: add vio life cycle details to design doc
Add more documentation details for most aspects of the data_vio read and write processes. Also correct a few minor errors and rewrite some text for clarity. Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
||
|
Matthew Sakai
|
a03652238d |
dm vdo: add vdo documentation to device-mapper index
Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
||
|
Matthew Sakai
|
04bf7ac646 |
dm: add documentation for dm-vdo target
This adds the admin-guide documentation for dm-vdo. vdo.rst is the guide to using dm-vdo. vdo-design is an overview of the design of dm-vdo. Co-developed-by: J. corwin Coburn <corwin@hurlbutnet.net> Signed-off-by: J. corwin Coburn <corwin@hurlbutnet.net> Signed-off-by: Matthew Sakai <msakai@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
||
|
Detlev Casanova
|
ce7e79acb6 |
doc: media: visl: Document tpg_verbose parameter
Also document stable frames and what it means for testing tools. Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> [hverkuil: add media: prefix to Subject] |
||
|
Thomas Gleixner
|
5c5682b9f8 |
x86/cpu: Detect real BSP on crash kernels
When a kdump kernel is started from a crashing CPU then there is no guarantee that this CPU is the real boot CPU (BSP). If the kdump kernel tries to online the BSP then the INIT sequence will reset the machine. There is a command line option to prevent this, but in case of nested kdump kernels this is wrong. But that command line option is not required at all because the real BSP is enumerated as the first CPU by firmware. Support for the only known system which was different (Voyager) got removed long ago. Detect whether the boot CPU APIC ID is the first APIC ID enumerated by the firmware. If the first APIC ID enumerated is not matching the boot CPU APIC ID then skip registering it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Michael Kelley <mhklinux@outlook.com> Tested-by: Sohil Mehta <sohil.mehta@intel.com> Link: https://lore.kernel.org/r/20240213210252.348542071@linutronix.de |
||
|
Hunter Chasens
|
3a5f1c3d83 |
docs: admin-guide: Update bootloader and installation instructions
Updates the bootloader and installation instructions in admin-guide/README.rst to align with modern practices. Details of Changes: - Added guidance on using EFISTUB for UEFI/EFI systems. - Noted that LILO is no longer in active development and provides alternatives. - Kept LILO instructions but marked as Legacy LILO Instructions. Suggest removal in future patch. Signed-off-by: Hunter Chasens <hunter.chasens18@ncf.edu> Signed-off-by: Jonathan Corbet <corbet@lwn.net> [jc: repaired added whitespace warnings] Link: https://lore.kernel.org/r/20240207171007.45405-1-hunter.chasens18@ncf.edu |
||
|
Borislav Petkov (AMD)
|
0e4fd816b0 |
Documentation: Move RAS section to admin-guide
This is where this stuff should be. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/87a5pes8jy.fsf@meer.lwn.net |
||
|
Qais Yousef
|
7f66f099de |
rcu: Provide a boot time parameter to control lazy RCU
To allow more flexible arrangements while still provide a single kernel for distros, provide a boot time parameter to enable/disable lazy RCU. Specify: rcutree.enable_rcu_lazy=[y|1|n|0] Which also requires rcu_nocbs=all at boot time to enable/disable lazy RCU. To disable it by default at build time when CONFIG_RCU_LAZY=y, the new CONFIG_RCU_LAZY_DEFAULT_OFF can be used. Signed-off-by: Qais Yousef (Google) <qyousef@layalina.io> Tested-by: Andrea Righi <andrea.righi@canonical.com> Reviewed-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> |
||
|
Paul E. McKenney
|
600716592a |
doc: Add EARLY flag to early-parsed kernel boot parameters
Kernel boot parameters declared with early_param() are parsed before
embedded parameters are extracted from initrd, and early_param()
parameters are not helpful when embedded in initrd. Therefore,
mark early_param() kernel boot parameters with "EARLY" in
kernel-parameters.txt.
The following early_param() calls declare kernel boot parameters that
are undocumented:
early_param("atmel.pm_modes", at91_pm_modes_select);
early_param("mem_fclk_21285", early_fclk);
early_param("ecc", early_ecc);
early_param("cachepolicy", early_cachepolicy);
early_param("nodebugmon", early_debug_disable);
early_param("kfence.sample_interval", parse_kfence_early_init);
early_param("additional_cpus", setup_additional_cpus);
early_param("stram_pool", atari_stram_setup);
early_param("disable_octeon_edac", disable_octeon_edac);
early_param("rd_start", rd_start_early);
early_param("rd_size", rd_size_early);
early_param("coherentio", setcoherentio);
early_param("nocoherentio", setnocoherentio);
early_param("fadump", early_fadump_param);
early_param("fadump_reserve_mem", early_fadump_reserve_mem);
early_param("no_stf_barrier", handle_no_stf_barrier);
early_param("no_rfi_flush", handle_no_rfi_flush);
early_param("smt-enabled", early_smt_enabled);
early_param("ppc_pci_reset_phbs", pci_reset_phbs_setup);
early_param("ps3fb", early_parse_ps3fb);
early_param("ps3flash", early_parse_ps3flash);
early_param("novx", disable_vector_extension);
early_param("nobp", nobp_setup_early);
early_param("nospec", nospec_setup_early);
early_param("possible_cpus", _setup_possible_cpus);
early_param("stp", early_parse_stp);
early_param("nopfault", nopfault);
early_param("nmi_mode", nmi_mode_setup);
early_param("sh_mv", early_parse_mv);
early_param("pmb", early_pmb);
early_param("hvirq", early_hvirq_major);
early_param("cfi", cfi_parse_cmdline);
early_param("disableapic", setup_disableapic);
early_param("noapictimer", parse_disable_apic_timer);
early_param("disable_cpu_apicid", apic_set_disabled_cpu_apicid);
early_param("uv_memblksize", parse_mem_block_size);
early_param("retbleed", retbleed_parse_cmdline);
early_param("no-kvmclock-vsyscall", parse_no_kvmclock_vsyscall);
early_param("update_mptable", update_mptable_setup);
early_param("alloc_mptable", parse_alloc_mptable_opt);
early_param("possible_cpus", _setup_possible_cpus);
early_param("lsmsi", early_parse_ls_scfg_msi);
early_param("nokgdbroundup", opt_nokgdbroundup);
early_param("kgdbcon", opt_kgdb_con);
early_param("kasan", early_kasan_flag);
early_param("kasan.mode", early_kasan_mode);
early_param("kasan.vmalloc", early_kasan_flag_vmalloc);
early_param("kasan.page_alloc.sample", early_kasan_flag_page_alloc_sample);
early_param("kasan.page_alloc.sample.order", early_kasan_flag_page_alloc_sample_order);
early_param("kasan.fault", early_kasan_fault);
early_param("kasan.stacktrace", early_kasan_flag_stacktrace);
early_param("kasan.stack_ring_size", early_kasan_flag_stack_ring_size);
early_param("accept_memory", accept_memory_parse);
early_param("page_table_check", early_page_table_check_param);
sh_early_platform_init("earlytimer", &sh_cmt_device_driver);
early_param_on_off("gbpages", "nogbpages", direct_gbpages, CONFIG_X86_DIRECT_GBPAGES);
These are not necessarily bugs, given that some kernel boot parameters
are intended for deep debugging rather than general use.
This work does not cover all of the kernel boot parameters declared using
cmdline_find_option() and cmdline_find_option_bool(). If these are in
fact guaranteed to be early (which appears to be the case), they can be
added in a later version of this patch.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Petr Malat <oss@malat.biz>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: <linux-doc@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
|
||
|
Ingo Molnar
|
4589f199eb |
Merge branch 'x86/bugs' into x86/core, to pick up pending changes before dependent patches
Merge in pending alternatives patching infrastructure changes, before applying more patches. Signed-off-by: Ingo Molnar <mingo@kernel.org> |
||
|
Meng Li
|
4c7dbd8521 |
Documentation: PM: amd-pstate: Fix section title underline
Title under line too short Signed-off-by: Meng Li <li.meng@amd.com> [ rjw: Subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Bartosz Golaszewski
|
104e00bbc7 |
Linux 6.8-rc4
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmXJK4UeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGHsYH/jKmzKXDRsBCcw/Q HGUvFtpohWBOpN6efdf0nxilQisuyQrqKB9fnwvfcdE60VpqMJXFMdlFh/fonxPl JMbpk9y5uw48IJZA43NwTxUrjZ4wyWzv4ZF6YWa+5WdTAJpPLEPhhnLxcHOKklMr 5Cm/7B/M7eB2BXBfc45b1pkKN22q9OXvjaKxZ+5wYmiMxS+GC8l8jiJ/WlHX78PR eLgsa1v732f2D7YF75wVhaoYepR+QzA9wTKqhjMNCEaVc2PQhA2JRsBXEt84qEIa FZigmf7LLc4ed9YA2XjRBZhAehe3cZVJZ1lasW37IATS921La2WfKuiysICJOtyT bGjK8tk= =Pt7W -----END PGP SIGNATURE----- Merge tag 'v6.8-rc4' into gpio/for-next Linux 6.8-rc4 Pulling this for a bugfix upstream with which the gpio/for-next branch conflicts. |
||
|
Thorsten Blum
|
f9197538d7 |
Documentation: admin-guide: tainted-kernels.rst: Add missing article and comma
- Add missing article "the" - s/above example/example above/ - Add missing comma after introductory clause to improve readability Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240205132409.1957-1-thorsten.blum@toblux.com |
||
|
Guilherme G. Piccoli
|
3e3ede49ce |
docs: Document possible_cpus parameter
The number of possible CPUs is set be kernel in early boot time through some discovery mechanisms, like ACPI in x86. We have a parameter both in x86 and S390 to override that - there are some cases of BIOSes exposing more possible CPUs than the available ones, so this parameter is a good testing mechanism, but for some reason wasn't mentioned so far in the kernel parameters guide - let's fix that. Cc: Changwoo Min <changwoo@igalia.com> Signed-off-by: "Guilherme G. Piccoli" <gpiccoli@igalia.com> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240203152208.1461293-1-gpiccoli@igalia.com |
||
|
Dorcas Anono Litunya
|
e76681afdc |
documentation: media: vivid: Modify typo in documentation
Correct the default value of node_type vivid parameter to 0xe1d3d. Signed-off-by: Dorcas Anono Litunya <anonolitunya@gmail.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
||
|
Borislav Petkov (AMD)
|
2995674833 |
x86/Kconfig: Remove CONFIG_AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT
It was meant well at the time but nothing's using it so get rid of it. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Acked-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20240202163510.GDZb0Zvj8qOndvFOiZ@fat_crate.local |
||
|
Meng Li
|
dfddf34a3f |
Documentation: introduce amd-pstate preferrd core mode kernel command line options
amd-pstate driver support enable/disable preferred core. Default enabled on platforms supporting amd-pstate preferred core. Disable amd-pstate preferred core with "amd_prefcore=disable" added to the kernel command line. Signed-off-by: Meng Li <li.meng@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Wyes Karny <wyes.karny@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Perry Yuan <perry.yuan@amd.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Meng Li
|
3a004e1fee |
Documentation: amd-pstate: introduce amd-pstate preferred core
Introduce amd-pstate preferred core. check preferred core state set by the kernel parameter: $ cat /sys/devices/system/cpu/amd-pstate/prefcore Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Reviewed-by: Wyes Karny <wyes.karny@amd.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> Reviewed-by: Perry Yuan <perry.yuan@amd.com> Signed-off-by: Meng Li <li.meng@amd.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Xin Li
|
3810da1271 |
x86/fred: Add a fred= cmdline param
Let command line option "fred" accept multiple options to make it easier to tweak its behavior. Currently, two options 'on' and 'off' are allowed, and the default behavior is to disable FRED. To enable FRED, append "fred=on" to the kernel command line. [ bp: Use cpu_feature_enabled(), touch ups. ] Signed-off-by: Xin Li <xin3.li@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Tested-by: Shan Kang <shan.kang@intel.com> Link: https://lore.kernel.org/r/20231205105030.8698-9-xin3.li@intel.com |
||
|
Mark Pearson
|
0959afbafa
|
platform/x86: Support for mode FN key
New Thinkpads have added a 'Mode' Function key that on Windows allows you to choose the active profile (low-power, balanced, performance) Added suppoort for this hotkey (F8), and have it cycle through the options available. Tested on X1 Carbon G12. Signed-off-by: Mark Pearson <mpearson-lenovo@squebb.ca> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20240120232949.317337-1-mpearson-lenovo@squebb.ca Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
||
|
Lukas Bulwahn
|
d546978e0c |
docs: admin-guide: remove obsolete advice related to SLAB allocator
Commit 1db9d06aaa55 ("mm/slab: remove CONFIG_SLAB from all Kconfig and
Makefile") removes the config SLAB and makes the SLUB allocator the only
default allocator in the kernel. Hence, the advice on reducing OS jitter
due to kworker kernel threads to build with CONFIG_SLUB instead of
CONFIG_SLAB is obsolete.
Remove the obsolete advice to build with SLUB instead of SLAB.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20231130095515.21586-1-lukas.bulwahn@gmail.com
|
||
|
Vegard Nossum
|
ea7dcd8a48 |
doc: admin-guide/kernel-parameters: remove useless comment
This comment about DRM drivers has been there since the first git commit. It simply doesn't belong in kernel-parameters; remove it. Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20240111085220.3693059-1-vegard.nossum@oracle.com |
||
|
Xinyu Li
|
8d4c171f45 |
docs: cgroup-v1: add missing code-block tags
Hugetlb.rst lacks two code-block tags, causing a formatting issue. Signed-off-by: Xinyu Li <lixinyu20s@ict.ac.cn> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Borislav Petkov (AMD)
|
49527ca264 |
Documentation/kernel-parameters: Add spec_rstack_overflow to mitigations=off
mitigations=off disables the SRSO mitigation too. Add it to the list. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240118163600.17857-1-bp@alien8.de |
||
|
Kent Gibson
|
c055f7ed97 |
Documentation: gpio: move gpio-mockup into obsolete section
The gpio-mockup has been obsoleted by the gpio-sim, so relocate its documentation into the obsolete section of the admin-guide book. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Kent Gibson
|
c3d336cae7 |
Documentation: gpio: document gpio-mockup as obsoleted by gpio-sim
Update the gpio-mockup documentation to note that is has been obsoleted by the gpio-sim. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Kent Gibson
|
f1ccbe9aae |
Documentation: gpio: capitalize GPIO in index title
Capitalise the title of the GPIO documentation page to match other subsystems. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Kent Gibson
|
16b2bb7fe5 |
Documentation: gpio: add chardev v1 userspace API documentation
Add documentation for v1 of the GPIO character device userspace API to the obsolete section of both the admin-guide and userspace-api books. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Kent Gibson
|
5054626a9b |
Documentation: gpio: move sysfs into an obsolete section
The GPIO sysfs API is long obsolete, so highlight this even further by moving it into an obsolete APIs section in both the admin-guide and userspace-api books. Signed-off-by: Kent Gibson <warthog618@gmail.com> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Kent Gibson
|
32a0a0da53 |
Documentation: gpio: add chardev userspace API documentation
Add documentation for the GPIO character device userspace API. Added to the userspace-api book, but also provide a link from the admin-guide book, as historically the GPIO documentation has been there. Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> |
||
|
Xiongwei Song
|
671776b32b |
mm/slub: unify all sl[au]b parameters with "slab_$param"
Since the SLAB allocator has been removed, so we can clean up the sl[au]b_$params. With only one slab allocator left, it's better to use the generic "slab" term instead of "slub" which is an implementation detail, which is pointed out by Vlastimil Babka. For more information please see [1]. Hence, we are going to use "slab_$param" as the primary prefix. This patch is changing the following slab parameters - slub_max_order - slub_min_order - slub_min_objects - slub_debug to - slab_max_order - slab_min_order - slab_min_objects - slab_debug as the primary slab parameters for all references of them in docs and comments. But this patch won't change variables and functions inside slub as we will have wider slub/slab change. Meanwhile, "slub_$params" can also be passed by command line, which is to keep backward compatibility. Also mark all "slub_$params" as legacy. Remove the separate descriptions for slub_[no]merge, append legacy tip for them at the end of descriptions of slab_[no]merge. [1] https://lore.kernel.org/linux-mm/7512b350-4317-21a0-fab3-4101bc4d8f7a@suse.cz/ Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
Xiongwei Song
|
f1868165d2 |
Documentation: kernel-parameters: remove noaliencache
Since slab allocator has already been removed. There is no users of the noaliencache parameter, so let's remove it. Suggested-by: Hyeonggon Yoo <42.hyeyoo@gmail.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com> Signed-off-by: Vlastimil Babka <vbabka@suse.cz> |
||
|
Linus Torvalds
|
7a39682022 |
Various smb client fixes, including multichannel and for SMB3.1.1 POSIX extensions
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Merge tag 'v6.8-rc-part2-smb-client' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client updates from Steve French:
"Various smb client fixes, including multichannel and for SMB3.1.1
POSIX extensions:
- debugging improvement (display start time for stats)
- two reparse point handling fixes
- various multichannel improvements and fixes
- SMB3.1.1 POSIX extensions open/create parsing fix
- retry (reconnect) improvement including new retrans mount parm, and
handling of two additional return codes that need to be retried on
- two minor cleanup patches and another to remove duplicate query
info code
- two documentation cleanup, and one reviewer email correction"
* tag 'v6.8-rc-part2-smb-client' of git://git.samba.org/sfrench/cifs-2.6:
cifs: update iface_last_update on each query-and-update
cifs: handle servers that still advertise multichannel after disabling
cifs: new mount option called retrans
cifs: reschedule periodic query for server interfaces
smb: client: don't clobber ->i_rdev from cached reparse points
smb: client: get rid of smb311_posix_query_path_info()
smb: client: parse owner/group when creating reparse points
smb: client: fix parsing of SMB3.1.1 POSIX create context
cifs: update known bugs mentioned in kernel docs for cifs
cifs: new nt status codes from MS-SMB2
cifs: pick channel for tcon and tdis
cifs: open_cached_dir should not rely on primary channel
smb3: minor documentation updates
Update MAINTAINERS email address
cifs: minor comment cleanup
smb3: show beginning time for per share stats
cifs: remove redundant variable tcon_exist
|
||
|
Linus Torvalds
|
24fdd51899 |
LoongArch changes for v6.8
1, Raise minimum clang version to 18.0.0; 2, Enable initial Rust support for LoongArch; 3, Add built-in dtb support for LoongArch; 4, Use generic interface to support crashkernel=X,[high,low]; 5, Some bug fixes and other small changes; 6, Update the default config file. -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEzOlt8mkP+tbeiYy5AoYrw/LiJnoFAmWnW9cWHGNoZW5odWFj YWlAa2VybmVsLm9yZwAKCRAChivD8uImel3CD/0Wnd2VOhoPubJkCXd+v7SdPDFB +BlkevAdmKQXkxNVXHRwfirsEBnUdQTfSN/5hMd69ZWUTayYq3WFxOcaPs27AAyn cXmGAzxfCjanSj+zxK8Gcmef5kppx3PRSbFdnWgc42Povu0xTOH3M31HXx5WXGtv hZK439DspNGHlF1Bsbs3J8xbS76jc/HDZAqnIjLuefQUaWM8nhsYxJIwVeGKUX1T IyEgBwhHhsY9ho/86yk8VXgordAN4dnMVmAHbR63HqjLo/8sck4IiPNxWKFCHex8 vgxp0zGxfBBts284EfSofDQHrSrrWl4+e2fW2QJ81BBDSS0wPCs4TAnzH+x9X7Wb MJuh8WIJqhfXdPFxs5fdnUeykEm1V/oWFfkWORk4jbQkpY9aZbk/iv6uxsmRhmhv 2WPWvjF+7B2zSXtMcjgm71ymb/nU95W2FZO02GlwTnbGJRKA2xLkjn9rCXoHWjd3 IlxgIgZJ1vkPvFPS/sbekaTUEG+6/qTPGGa2Ol3Q5ZTTLk9serfDa8ay1xCZeOny +fRBgLsuQAOGO2pvxfXjs+uvboZNUHeKrAi7XeR61GcbNpQDkjuwNJXQMiMQ+f66 jWM6H+hV+6sQ/W43KVrGCyBqTX4J9PSN/gX/Cq0PL74Yheop6neYXZTl5uDNYDe9 WYxiS9j/FoYgj8lxYQ== =GzFR -----END PGP SIGNATURE----- Merge tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch updates from Huacai Chen: - Raise minimum clang version to 18.0.0 - Enable initial Rust support for LoongArch - Add built-in dtb support for LoongArch - Use generic interface to support crashkernel=X,[high,low] - Some bug fixes and other small changes - Update the default config file. * tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (22 commits) MAINTAINERS: Add BPF JIT for LOONGARCH entry LoongArch: Update Loongson-3 default config file LoongArch: BPF: Prevent out-of-bounds memory access LoongArch: BPF: Support 64-bit pointers to kfuncs LoongArch: Fix definition of ftrace_regs_set_instruction_pointer() LoongArch: Use generic interface to support crashkernel=X,[high,low] LoongArch: Fix and simplify fcsr initialization on execve() LoongArch: Let cores_io_master cover the largest NR_CPUS LoongArch: Change SHMLBA from SZ_64K to PAGE_SIZE LoongArch: Add a missing call to efi_esrt_init() LoongArch: Parsing CPU-related information from DTS LoongArch: dts: DeviceTree for Loongson-2K2000 LoongArch: dts: DeviceTree for Loongson-2K1000 LoongArch: dts: DeviceTree for Loongson-2K0500 LoongArch: Allow device trees be built into the kernel dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for interrupt-names dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for reg-names dt-bindings: loongarch: Add Loongson SoC boards compatibles dt-bindings: loongarch: Add CPU bindings for LoongArch LoongArch: Enable initial Rust support ... |
||
|
Steve French
|
cfb7a13399 |
cifs: update known bugs mentioned in kernel docs for cifs
Remove bugs that have been addressed and add link to xfstest results wiki. Signed-off-by: Steve French <stfrench@microsoft.com> |
||
|
Steve French
|
d7851dc13d |
smb3: minor documentation updates
Update the usage documentation to include some missing configuration options. Update the todo list documentation for cifs.ko Reviewed-by: Bharath SM <bharathsm@microsoft.com> Signed-off-by: Steve French <stfrench@microsoft.com> |
||
|
Linus Torvalds
|
8c94ccc7cd |
USB / Thunderbolt changes for 6.8-rc1
Here is the big set of USB and Thunderbolt changes for 6.8-rc1.
Included in here are the following:
- Thunderbolt subsystem and driver updates for USB 4 hardware and
issues reported by real devices
- xhci driver updates
- dwc3 driver updates
- uvc_video gadget driver updates
- typec driver updates
- gadget string functions cleaned up
- other small changes
All of these have been in the linux-next tree for a while with no
reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt updates from Greg KH:
"Here is the big set of USB and Thunderbolt changes for 6.8-rc1.
Included in here are the following:
- Thunderbolt subsystem and driver updates for USB 4 hardware and
issues reported by real devices
- xhci driver updates
- dwc3 driver updates
- uvc_video gadget driver updates
- typec driver updates
- gadget string functions cleaned up
- other small changes
All of these have been in the linux-next tree for a while with no
reported issues"
* tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits)
usb: typec: tipd: fix use of device-specific init function
usb: typec: tipd: Separate reset for TPS6598x
usb: mon: Fix atomicity violation in mon_bin_vma_fault
usb: gadget: uvc: Remove nested locking
usb: gadget: uvc: Fix use are free during STREAMOFF
usb: typec: class: fix typec_altmode_put_partner to put plugs
dt-bindings: usb: dwc3: Limit num-hc-interrupters definition
dt-bindings: usb: xhci: Add num-hc-interrupters definition
xhci: add support to allocate several interrupters
USB: core: Use device_driver directly in struct usb_driver and usb_device_driver
arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry
usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer
dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue
arm64: dts: qcom: msm8996: Remove PNoC clock from MSS
arm64: dts: qcom: msm8996: Remove AGGRE2 clock from SLPI
arm64: dts: qcom: msm8998: Remove AGGRE2 clock from SLPI
arm64: dts: qcom: msm8939: Drop RPM bus clocks
arm64: dts: qcom: sdm630: Drop RPM bus clocks
arm64: dts: qcom: qcs404: Drop RPM bus clocks
arm64: dts: qcom: msm8996: Drop RPM bus clocks
...
|
||
|
Linus Torvalds
|
bd736f38c0 |
TTY/Serial changes for 6.8-rc1
Here is the big set of tty and serial driver changes for 6.8-rc1. As usual, Jiri has a bunch of refactoring and cleanups for the tty core and drivers in here, along with the usual set of rs485 updates (someday this might work properly...) Along with those, in here are changes for: - sc16is7xx serial driver updates - platform driver removal api updates - amba-pl011 driver updates - tty driver binding updates - other small tty/serial driver updates and changes All of these have been in linux-next for a while with no reported issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZaeUaw8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ykyOgCgp1uhP/b9iW6qM7qL6OYEG6idI0kAnj0VASNm vSI69HmdKKwo69YLOSBp =14n1 -----END PGP SIGNATURE----- Merge tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty / serial updates from Greg KH: "Here is the big set of tty and serial driver changes for 6.8-rc1. As usual, Jiri has a bunch of refactoring and cleanups for the tty core and drivers in here, along with the usual set of rs485 updates (someday this might work properly...) Along with those, in here are changes for: - sc16is7xx serial driver updates - platform driver removal api updates - amba-pl011 driver updates - tty driver binding updates - other small tty/serial driver updates and changes All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits) serial: sc16is7xx: refactor EFR lock serial: sc16is7xx: reorder code to remove prototype declarations serial: sc16is7xx: refactor FIFO access functions to increase commonality serial: sc16is7xx: drop unneeded MODULE_ALIAS serial: sc16is7xx: replace hardcoded divisor value with BIT() macro serial: sc16is7xx: add explicit return for some switch default cases serial: sc16is7xx: add macro for max number of UART ports serial: sc16is7xx: add driver name to struct uart_driver serial: sc16is7xx: use i2c_get_match_data() serial: sc16is7xx: use spi_get_device_match_data() serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield serial: sc16is7xx: improve do/while loop in sc16is7xx_irq() serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq() serial: sc16is7xx: set safe default SPI clock frequency serial: sc16is7xx: add check for unsupported SPI modes during probe serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error serial: 8250_exar: Set missing rs485_supported flag serial: omap: do not override settings for RS485 support serial: core, imx: do not set RS485 enabled if it is not supported serial: core: make sure RS485 cannot be enabled when it is not supported ... |
||
|
Linus Torvalds
|
80955ae955 |
Driver core changes for 6.8-rc1
Here are the set of driver core and kernfs changes for 6.8-rc1. Nothing
major in here this release cycle, just lots of small cleanups and some
tweaks on kernfs that in the very end, got reverted and will come back
in a safer way next release cycle.
Included in here are:
- more driver core 'const' cleanups and fixes
- fw_devlink=rpm is now the default behavior
- kernfs tiny changes to remove some string functions
- cpu handling in the driver core is updated to work better on many
systems that add topologies and cpus after booting
- other minor changes and cleanups
All of the cpu handling patches have been acked by the respective
maintainers and are coming in here in one series. Everything has been
in linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here are the set of driver core and kernfs changes for 6.8-rc1.
Nothing major in here this release cycle, just lots of small cleanups
and some tweaks on kernfs that in the very end, got reverted and will
come back in a safer way next release cycle.
Included in here are:
- more driver core 'const' cleanups and fixes
- fw_devlink=rpm is now the default behavior
- kernfs tiny changes to remove some string functions
- cpu handling in the driver core is updated to work better on many
systems that add topologies and cpus after booting
- other minor changes and cleanups
All of the cpu handling patches have been acked by the respective
maintainers and are coming in here in one series. Everything has been
in linux-next for a while with no reported issues"
* tag 'driver-core-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (51 commits)
Revert "kernfs: convert kernfs_idr_lock to an irq safe raw spinlock"
kernfs: convert kernfs_idr_lock to an irq safe raw spinlock
class: fix use-after-free in class_register()
PM: clk: make pm_clk_add_notifier() take a const pointer
EDAC: constantify the struct bus_type usage
kernfs: fix reference to renamed function
driver core: device.h: fix Excess kernel-doc description warning
driver core: class: fix Excess kernel-doc description warning
driver core: mark remaining local bus_type variables as const
driver core: container: make container_subsys const
driver core: bus: constantify subsys_register() calls
driver core: bus: make bus_sort_breadthfirst() take a const pointer
kernfs: d_obtain_alias(NULL) will do the right thing...
driver core: Better advertise dev_err_probe()
kernfs: Convert kernfs_path_from_node_locked() from strlcpy() to strscpy()
kernfs: Convert kernfs_name_locked() from strlcpy() to strscpy()
kernfs: Convert kernfs_walk_ns() from strlcpy() to strscpy()
initramfs: Expose retained initrd as sysfs file
fs/kernfs/dir: obey S_ISGID
kernel/cgroup: use kernfs_create_dir_ns()
...
|
||
|
Linus Torvalds
|
7b5bcf9b84 |
More power management updates for 6.8-rc1
- Restore the system-wide asynchronous device resume optimization
removed by a recent concurrency fix (Rafael J. Wysocki).
- Make the intel_pstate cpufreq driver allow Meteor Lake systems to run
at somewhat higher frequencies (Srinivas Pandruvada).
- Make the PM QoS core code use kcalloc() for array allocation (Erick
Archer).
- Fix two PM-related typos in admin-guide (Erwan Velu).
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Merge tag 'pm-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull more power management updates from Rafael Wysocki:
"These restore the asynchronous device resume optimization removed by
the previous PM merge, make the intel_pstate driver work better on
Meteor Lake systems, optimize the PM QoS core code slightly and fix up
typos in admin-guide.
Specifics:
- Restore the system-wide asynchronous device resume optimization
removed by a recent concurrency fix (Rafael J. Wysocki)
- Make the intel_pstate cpufreq driver allow Meteor Lake systems to
run at somewhat higher frequencies (Srinivas Pandruvada)
- Make the PM QoS core code use kcalloc() for array allocation (Erick
Archer)
- Fix two PM-related typos in admin-guide (Erwan Velu)"
* tag 'pm-6.8-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: sleep: Restore asynchronous device resume optimization
Documentation: admin-guide: PM: Fix two typos
cpufreq: intel_pstate: Update hybrid scaling factor for Meteor Lake
PM: QoS: Use kcalloc() instead of kzalloc()
|
||
|
Linus Torvalds
|
09d1c6a80f |
Generic:
- Use memdup_array_user() to harden against overflow.
- Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures.
- Clean up Kconfigs that all KVM architectures were selecting
- New functionality around "guest_memfd", a new userspace API that
creates an anonymous file and returns a file descriptor that refers
to it. guest_memfd files are bound to their owning virtual machine,
cannot be mapped, read, or written by userspace, and cannot be resized.
guest_memfd files do however support PUNCH_HOLE, which can be used to
switch a memory area between guest_memfd and regular anonymous memory.
- New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
per-page attributes for a given page of guest memory; right now the
only attribute is whether the guest expects to access memory via
guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees
confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM).
x86:
- Support for "software-protected VMs" that can use the new guest_memfd
and page attributes infrastructure. This is mostly useful for testing,
since there is no pKVM-like infrastructure to provide a meaningfully
reduced TCB.
- Fix a relatively benign off-by-one error when splitting huge pages during
CLEAR_DIRTY_LOG.
- Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf
TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE.
- Use more generic lockdep assertions in paths that don't actually care
about whether the caller is a reader or a writer.
- let Xen guests opt out of having PV clock reported as "based on a stable TSC",
because some of them don't expect the "TSC stable" bit (added to the pvclock
ABI by KVM, but never set by Xen) to be set.
- Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL.
- Advertise flush-by-ASID support for nSVM unconditionally, as KVM always
flushes on nested transitions, i.e. always satisfies flush requests. This
allows running bleeding edge versions of VMware Workstation on top of KVM.
- Sanity check that the CPU supports flush-by-ASID when enabling SEV support.
- On AMD machines with vNMI, always rely on hardware instead of intercepting
IRET in some cases to detect unmasking of NMIs
- Support for virtualizing Linear Address Masking (LAM)
- Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state
prior to refreshing the vPMU model.
- Fix a double-overflow PMU bug by tracking emulated counter events using a
dedicated field instead of snapshotting the "previous" counter. If the
hardware PMC count triggers overflow that is recognized in the same VM-Exit
that KVM manually bumps an event count, KVM would pend PMIs for both the
hardware-triggered overflow and for KVM-triggered overflow.
- Turn off KVM_WERROR by default for all configs so that it's not
inadvertantly enabled by non-KVM developers, which can be problematic for
subsystems that require no regressions for W=1 builds.
- Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL
"features".
- Don't force a masterclock update when a vCPU synchronizes to the current TSC
generation, as updating the masterclock can cause kvmclock's time to "jump"
unexpectedly, e.g. when userspace hotplugs a pre-created vCPU.
- Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths,
partly as a super minor optimization, but mostly to make KVM play nice with
position independent executable builds.
- Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
CONFIG_HYPERV as a minor optimization, and to self-document the code.
- Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation"
at build time.
ARM64:
- LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
base granule sizes. Branch shared with the arm64 tree.
- Large Fine-Grained Trap rework, bringing some sanity to the
feature, although there is more to come. This comes with
a prefix branch shared with the arm64 tree.
- Some additional Nested Virtualization groundwork, mostly
introducing the NV2 VNCR support and retargetting the NV
support to that version of the architecture.
- A small set of vgic fixes and associated cleanups.
Loongarch:
- Optimization for memslot hugepage checking
- Cleanup and fix some HW/SW timer issues
- Add LSX/LASX (128bit/256bit SIMD) support
RISC-V:
- KVM_GET_REG_LIST improvement for vector registers
- Generate ISA extension reg_list using macros in get-reg-list selftest
- Support for reporting steal time along with selftest
s390:
- Bugfixes
Selftests:
- Fix an annoying goof where the NX hugepage test prints out garbage
instead of the magic token needed to run the test.
- Fix build errors when a header is delete/moved due to a missing flag
in the Makefile.
- Detect if KVM bugged/killed a selftest's VM and print out a helpful
message instead of complaining that a random ioctl() failed.
- Annotate the guest printf/assert helpers with __printf(), and fix the
various bugs that were lurking due to lack of said annotation.
There are two non-KVM patches buried in the middle of guest_memfd support:
fs: Rename anon_inode_getfile_secure() and anon_inode_getfd_secure()
mm: Add AS_UNMOVABLE to mark mapping as completely unmovable
The first is small and mostly suggested-by Christian Brauner; the second
a bit less so but it was written by an mm person (Vlastimil Babka).
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm updates from Paolo Bonzini:
"Generic:
- Use memdup_array_user() to harden against overflow.
- Unconditionally advertise KVM_CAP_DEVICE_CTRL for all
architectures.
- Clean up Kconfigs that all KVM architectures were selecting
- New functionality around "guest_memfd", a new userspace API that
creates an anonymous file and returns a file descriptor that refers
to it. guest_memfd files are bound to their owning virtual machine,
cannot be mapped, read, or written by userspace, and cannot be
resized. guest_memfd files do however support PUNCH_HOLE, which can
be used to switch a memory area between guest_memfd and regular
anonymous memory.
- New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify
per-page attributes for a given page of guest memory; right now the
only attribute is whether the guest expects to access memory via
guest_memfd or not, which in Confidential SVMs backed by SEV-SNP,
TDX or ARM64 pKVM is checked by firmware or hypervisor that
guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in
the case of pKVM).
x86:
- Support for "software-protected VMs" that can use the new
guest_memfd and page attributes infrastructure. This is mostly
useful for testing, since there is no pKVM-like infrastructure to
provide a meaningfully reduced TCB.
- Fix a relatively benign off-by-one error when splitting huge pages
during CLEAR_DIRTY_LOG.
- Fix a bug where KVM could incorrectly test-and-clear dirty bits in
non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with
a non-huge SPTE.
- Use more generic lockdep assertions in paths that don't actually
care about whether the caller is a reader or a writer.
- let Xen guests opt out of having PV clock reported as "based on a
stable TSC", because some of them don't expect the "TSC stable" bit
(added to the pvclock ABI by KVM, but never set by Xen) to be set.
- Revert a bogus, made-up nested SVM consistency check for
TLB_CONTROL.
- Advertise flush-by-ASID support for nSVM unconditionally, as KVM
always flushes on nested transitions, i.e. always satisfies flush
requests. This allows running bleeding edge versions of VMware
Workstation on top of KVM.
- Sanity check that the CPU supports flush-by-ASID when enabling SEV
support.
- On AMD machines with vNMI, always rely on hardware instead of
intercepting IRET in some cases to detect unmasking of NMIs
- Support for virtualizing Linear Address Masking (LAM)
- Fix a variety of vPMU bugs where KVM fail to stop/reset counters
and other state prior to refreshing the vPMU model.
- Fix a double-overflow PMU bug by tracking emulated counter events
using a dedicated field instead of snapshotting the "previous"
counter. If the hardware PMC count triggers overflow that is
recognized in the same VM-Exit that KVM manually bumps an event
count, KVM would pend PMIs for both the hardware-triggered overflow
and for KVM-triggered overflow.
- Turn off KVM_WERROR by default for all configs so that it's not
inadvertantly enabled by non-KVM developers, which can be
problematic for subsystems that require no regressions for W=1
builds.
- Advertise all of the host-supported CPUID bits that enumerate
IA32_SPEC_CTRL "features".
- Don't force a masterclock update when a vCPU synchronizes to the
current TSC generation, as updating the masterclock can cause
kvmclock's time to "jump" unexpectedly, e.g. when userspace
hotplugs a pre-created vCPU.
- Use RIP-relative address to read kvm_rebooting in the VM-Enter
fault paths, partly as a super minor optimization, but mostly to
make KVM play nice with position independent executable builds.
- Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on
CONFIG_HYPERV as a minor optimization, and to self-document the
code.
- Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV
"emulation" at build time.
ARM64:
- LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base
granule sizes. Branch shared with the arm64 tree.
- Large Fine-Grained Trap rework, bringing some sanity to the
feature, although there is more to come. This comes with a prefix
branch shared with the arm64 tree.
- Some additional Nested Virtualization groundwork, mostly
introducing the NV2 VNCR support and retargetting the NV support to
that version of the architecture.
- A small set of vgic fixes and associated cleanups.
Loongarch:
- Optimization for memslot hugepage checking
- Cleanup and fix some HW/SW timer issues
- Add LSX/LASX (128bit/256bit SIMD) support
RISC-V:
- KVM_GET_REG_LIST improvement for vector registers
- Generate ISA extension reg_list using macros in get-reg-list
selftest
- Support for reporting steal time along with selftest
s390:
- Bugfixes
Selftests:
- Fix an annoying goof where the NX hugepage test prints out garbage
instead of the magic token needed to run the test.
- Fix build errors when a header is delete/moved due to a missing
flag in the Makefile.
- Detect if KVM bugged/killed a selftest's VM and print out a helpful
message instead of complaining that a random ioctl() failed.
- Annotate the guest printf/assert helpers with __printf(), and fix
the various bugs that were lurking due to lack of said annotation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits)
x86/kvm: Do not try to disable kvmclock if it was not enabled
KVM: x86: add missing "depends on KVM"
KVM: fix direction of dependency on MMU notifiers
KVM: introduce CONFIG_KVM_COMMON
KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd
KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache
RISC-V: KVM: selftests: Add get-reg-list test for STA registers
RISC-V: KVM: selftests: Add steal_time test support
RISC-V: KVM: selftests: Add guest_sbi_probe_extension
RISC-V: KVM: selftests: Move sbi_ecall to processor.c
RISC-V: KVM: Implement SBI STA extension
RISC-V: KVM: Add support for SBI STA registers
RISC-V: KVM: Add support for SBI extension registers
RISC-V: KVM: Add SBI STA info to vcpu_arch
RISC-V: KVM: Add steal-update vcpu request
RISC-V: KVM: Add SBI STA extension skeleton
RISC-V: paravirt: Implement steal-time support
RISC-V: Add SBI STA extension definitions
RISC-V: paravirt: Add skeleton for pv-time support
RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr()
...
|
||
|
Linus Torvalds
|
1b1934dbbd |
A handful of late-arriving documentation fixes.
-----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmWoABAPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5Y+yAH/2YPZFKa+QzzYE6xbQnjPErPnGl5Ubdaem3q PODmp5DdIqnVRz8eEHY0h4Y9676RCzXg8aH6H+C5zkKJSof/Z7KKpQjmWTBnr30z QUXgcyxG+rTdZezZG8PKZVhZl7j8YX5ln3i4zR4g0MeaFpxiROrfX22jrnT2fqG4 qkoenoZPwCZsrRP4qo7kDKPyfV8yupgjJ8uDcua7e5/5lSGT5siGVitVD13lcMXo bO/Tdhr2w09S898nZJSEZIP8SvTA1Rjhd0xmHRSaiNjQV/qMU5ZAtaukuBkQGJpY FYP4enQGefBk2hJ92gm5yg0Dv8GSeC3i0aKjhomrvnpu4cVvhxc= =DxUH -----END PGP SIGNATURE----- Merge tag 'docs-6.8-2' of git://git.lwn.net/linux Pull documentation fixes from Jonathan Corbet: "A handful of late-arriving documentation fixes" * tag 'docs-6.8-2' of git://git.lwn.net/linux: docs, kprobes: Add loongarch as supported architecture docs, kprobes: Update email address of Masami Hiramatsu docs: admin-guide: hw_random: update rng-tools website Documentation/core-api: fix spelling mistake in workqueue docs: kernel_feat.py: fix potential command injection Documentation: constrain alabaster package to older versions |
||
|
Youling Tang
|
78de91b458 |
LoongArch: Use generic interface to support crashkernel=X,[high,low]
LoongArch already supports two crashkernel regions in kexec-tools, so we
can directly use the common interface to support crashkernel=X,[high,low]
after commit
|
||
|
Rafael J. Wysocki
|
9223614ea7 |
Merge branches 'pm-sleep', 'pm-cpufreq' and 'pm-qos' into pm
* pm-sleep: PM: sleep: Restore asynchronous device resume optimization * pm-cpufreq: Documentation: admin-guide: PM: Fix two typos cpufreq: intel_pstate: Update hybrid scaling factor for Meteor Lake * pm-qos: PM: QoS: Use kcalloc() instead of kzalloc() |
||
|
Linus Torvalds
|
23a80d462c |
RCU pull request for v6.8
This pull request contains the following branches:
doc.2023.12.13a: Documentation and comment updates.
torture.2023.11.23a: RCU torture, locktorture updates that include
cleanups; nolibc init build support for mips, ppc and rv64;
testing of mid stall duration scenario and fixing fqs task
creation conditions.
fixes.2023.12.13a: Misc fixes, most notably restricting usage of
RCU CPU stall notifiers, to confine their usage primarily
to debug kernels.
rcu-tasks.2023.12.12b: RCU tasks minor fixes.
srcu.2023.12.13a: lockdep annotation fix for NMI-safe accesses,
callback advancing/acceleration cleanup and documentation
improvements.
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Merge tag 'rcu.release.v6.8' of https://github.com/neeraju/linux
Pull RCU updates from Neeraj Upadhyay:
- Documentation and comment updates
- RCU torture, locktorture updates that include cleanups; nolibc init
build support for mips, ppc and rv64; testing of mid stall duration
scenario and fixing fqs task creation conditions
- Misc fixes, most notably restricting usage of RCU CPU stall
notifiers, to confine their usage primarily to debug kernels
- RCU tasks minor fixes
- lockdep annotation fix for NMI-safe accesses, callback
advancing/acceleration cleanup and documentation improvements
* tag 'rcu.release.v6.8' of https://github.com/neeraju/linux:
rcu: Force quiescent states only for ongoing grace period
doc: Clarify historical disclaimers in memory-barriers.txt
doc: Mention address and data dependencies in rcu_dereference.rst
doc: Clarify RCU Tasks reader/updater checklist
rculist.h: docs: Fix wrong function summary
Documentation: RCU: Remove repeated word in comments
srcu: Use try-lock lockdep annotation for NMI-safe access.
srcu: Explain why callbacks invocations can't run concurrently
srcu: No need to advance/accelerate if no callback enqueued
srcu: Remove superfluous callbacks advancing from srcu_gp_start()
rcu: Remove unused macros from rcupdate.h
rcu: Restrict access to RCU CPU stall notifiers
rcu-tasks: Mark RCU Tasks accesses to current->rcu_tasks_idle_cpu
rcutorture: Add fqs_holdoff check before fqs_task is created
rcutorture: Add mid-sized stall to TREE07
rcutorture: add nolibc init support for mips, ppc and rv64
locktorture: Increase Hamming distance between call_rcu_chain and rcu_call_chains
|
||
|
Linus Torvalds
|
61da593f44 |
media updates for v6.8-rc1
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||
|
Linus Torvalds
|
5b9b41617b |
Another moderately busy cycle for documentation, including:
- The minimum Sphinx requirement has been raised to 2.4.4, following a
warning that was added in 6.2.
- Some reworking of the Documentation/process front page to, hopefully,
make it more useful.
- Various kernel-doc tweaks to, for example, make it deal properly with
__counted_by annotations.
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the delightful
consequence of adding some 600 warnings to the docs build. A sustained
effort by Randy, Vegard, and myself has addressed almost all of those,
bringing the documentation back into sync with the code. The fixes are
going through the appropriate maintainer trees.
- Various improvements to the HTML rendered docs, including automatic links
to Git revisions and a nice new pulldown to make translations easy to
access.
- Speaking of translations, more of those for Spanish and Chinese.
...plus the usual stream of documentation updates and typo fixes.
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Merge tag 'docs-6.8' of git://git.lwn.net/linux
Pull documentation update from Jonathan Corbet:
"Another moderately busy cycle for documentation, including:
- The minimum Sphinx requirement has been raised to 2.4.4, following
a warning that was added in 6.2
- Some reworking of the Documentation/process front page to,
hopefully, make it more useful
- Various kernel-doc tweaks to, for example, make it deal properly
with __counted_by annotations
- We have also restored a warning for documentation of nonexistent
structure members that disappeared a while back. That had the
delightful consequence of adding some 600 warnings to the docs
build. A sustained effort by Randy, Vegard, and myself has
addressed almost all of those, bringing the documentation back into
sync with the code. The fixes are going through the appropriate
maintainer trees
- Various improvements to the HTML rendered docs, including automatic
links to Git revisions and a nice new pulldown to make translations
easy to access
- Speaking of translations, more of those for Spanish and Chinese
... plus the usual stream of documentation updates and typo fixes"
* tag 'docs-6.8' of git://git.lwn.net/linux: (57 commits)
MAINTAINERS: use tabs for indent of CONFIDENTIAL COMPUTING THREAT MODEL
A reworked process/index.rst
ring-buffer/Documentation: Add documentation on buffer_percent file
Translated the RISC-V architecture boot documentation.
Docs: remove mentions of fdformat from util-linux
Docs/zh_CN: Fix the meaning of DEBUG to pr_debug()
Documentation: move driver-api/dcdbas to userspace-api/
Documentation: move driver-api/isapnp to userspace-api/
Documentation/core-api : fix typo in workqueue
Documentation/trace: Fixed typos in the ftrace FLAGS section
kernel-doc: handle a void function without producing a warning
scripts/get_abi.pl: ignore some temp files
docs: kernel_abi.py: fix command injection
scripts/get_abi: fix source path leak
CREDITS, MAINTAINERS, docs/process/howto: Update man-pages' maintainer
docs: translations: add translations links when they exist
kernel-doc: Align quick help and the code
MAINTAINERS: add reviewer for Spanish translations
docs: ignore __counted_by attribute in structure definitions
scripts: kernel-doc: Clarify missing struct member description
..
|
||
|
Linus Torvalds
|
3e7aeb78ab |
Networking changes for 6.8.
Core & protocols
----------------
- Analyze and reorganize core networking structs (socks, netdev,
netns, mibs) to optimize cacheline consumption and set up
build time warnings to safeguard against future header changes.
This improves TCP performances with many concurrent connections
up to 40%.
- Add page-pool netlink-based introspection, exposing the
memory usage and recycling stats. This helps indentify
bad PP users and possible leaks.
- Refine TCP/DCCP source port selection to no longer favor even
source port at connect() time when IP_LOCAL_PORT_RANGE is set.
This lowers the time taken by connect() for hosts having
many active connections to the same destination.
- Refactor the TCP bind conflict code, shrinking related socket
structs.
- Refactor TCP SYN-Cookie handling, as a preparation step to
allow arbitrary SYN-Cookie processing via eBPF.
- Tune optmem_max for 0-copy usage, increasing the default value
to 128KB and namespecifying it.
- Allow coalescing for cloned skbs coming from page pools, improving
RX performances with some common configurations.
- Reduce extension header parsing overhead at GRO time.
- Add bridge MDB bulk deletion support, allowing user-space to
request the deletion of matching entries.
- Reorder nftables struct members, to keep data accessed by the
datapath first.
- Introduce TC block ports tracking and use. This allows supporting
multicast-like behavior at the TC layer.
- Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
classifiers (RSVP and tcindex).
- More data-race annotations.
- Extend the diag interface to dump TCP bound-only sockets.
- Conditional notification of events for TC qdisc class and actions.
- Support for WPAN dynamic associations with nearby devices, to form
a sub-network using a specific PAN ID.
- Implement SMCv2.1 virtual ISM device support.
- Add support for Batman-avd mulicast packet type.
BPF
---
- Tons of verifier improvements:
- BPF register bounds logic and range support along with a large
test suite
- log improvements
- complete precision tracking support for register spills
- track aligned STACK_ZERO cases as imprecise spilled registers. It
improves the verifier "instructions processed" metric from single
digit to 50-60% for some programs
- support for user's global BPF subprogram arguments with few
commonly requested annotations for a better developer experience
- support tracking of BPF_JNE which helps cases when the compiler
transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
like
- several fixes
- Add initial TX metadata implementation for AF_XDP with support in
mlx5 and stmmac drivers. Two types of offloads are supported right
now, that is, TX timestamp and TX checksum offload.
- Fix kCFI bugs in BPF all forms of indirect calls from BPF into
kernel and from kernel into BPF work with CFI enabled. This allows
BPF to work with CONFIG_FINEIBT=y.
- Change BPF verifier logic to validate global subprograms lazily
instead of unconditionally before the main program, so they can be
guarded using BPF CO-RE techniques.
- Support uid/gid options when mounting bpffs.
- Add a new kfunc which acquires the associated cgroup of a task
within a specific cgroup v1 hierarchy where the latter is identified
by its id.
- Extend verifier to allow bpf_refcount_acquire() of a map value field
obtained via direct load which is a use-case needed in sched_ext.
- Add BPF link_info support for uprobe multi link along with bpftool
integration for the latter.
- Support for VLAN tag in XDP hints.
- Remove deprecated bpfilter kernel leftovers given the project
is developed in user-space (https://github.com/facebook/bpfilter).
Misc
----
- Support for parellel TC self-tests execution.
- Increase MPTCP self-tests coverage.
- Updated the bridge documentation, including several so-far
undocumented features.
- Convert all the net self-tests to run in unique netns, to
avoid random failures due to conflict and allow concurrent
runs.
- Add TCP-AO self-tests.
- Add kunit tests for both cfg80211 and mac80211.
- Autogenerate Netlink families documentation from YAML spec.
- Add yml-gen support for fixed headers and recursive nests, the
tool can now generate user-space code for all genetlink families
for which we have specs.
- A bunch of additional module descriptions fixes.
- Catch incorrect freeing of pages belonging to a page pool.
Driver API
----------
- Rust abstractions for network PHY drivers; do not cover yet the
full C API, but already allow implementing functional PHY drivers
in rust.
- Introduce queue and NAPI support in the netdev Netlink interface,
allowing complete access to the device <> NAPIs <> queues
relationship.
- Introduce notifications filtering for devlink to allow control
application scale to thousands of instances.
- Improve PHY validation, requesting rate matching information for
each ethtool link mode supported by both the PHY and host.
- Add support for ethtool symmetric-xor RSS hash.
- ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
platform.
- Expose pin fractional frequency offset value over new DPLL generic
netlink attribute.
- Convert older drivers to platform remove callback returning void.
- Add support for PHY package MMD read/write.
New hardware / drivers
----------------------
- Ethernet:
- Octeon CN10K devices
- Broadcom 5760X P7
- Qualcomm SM8550 SoC
- Texas Instrument DP83TG720S PHY
- Bluetooth:
- IMC Networks Bluetooth radio
Removed
-------
- WiFi:
- libertas 16-bit PCMCIA support
- Atmel at76c50x drivers
- HostAP ISA/PCMCIA style 802.11b driver
- zd1201 802.11b USB dongles
- Orinoco ISA/PCMCIA 802.11b driver
- Aviator/Raytheon driver
- Planet WL3501 driver
- RNDIS USB 802.11b driver
Drivers
-------
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- allow one by one port representors creation and removal
- add temperature and clock information reporting
- add get/set for ethtool's header split ringparam
- add again FW logging
- adds support switchdev hardware packet mirroring
- iavf: implement symmetric-xor RSS hash
- igc: add support for concurrent physical and free-running timers
- i40e: increase the allowable descriptors
- nVidia/Mellanox:
- Preparation for Socket-Direct multi-dev netdev. That will allow
in future releases combining multiple PFs devices attached to
different NUMA nodes under the same netdev
- Broadcom (bnxt):
- TX completion handling improvements
- add basic ntuple filter support
- reduce MSIX vectors usage for MQPRIO offload
- add VXLAN support, USO offload and TX coalesce completion for P7
- Marvell Octeon EP:
- xmit-more support
- add PF-VF mailbox support and use it for FW notifications for VFs
- Wangxun (ngbe/txgbe):
- implement ethtool functions to operate pause param, ring param,
coalesce channel number and msglevel
- Netronome/Corigine (nfp):
- add flow-steering support
- support UDP segmentation offload
- Ethernet NICs embedded, slower, virtual:
- Xilinx AXI: remove duplicate DMA code adopting the dma engine driver
- stmmac: add support for HW-accelerated VLAN stripping
- TI AM654x sw: add mqprio, frame preemption & coalescing
- gve: add support for non-4k page sizes.
- virtio-net: support dynamic coalescing moderation
- nVidia/Mellanox Ethernet datacenter switches:
- allow firmware upgrade without a reboot
- more flexible support for bridge flooding via the compressed
FID flooding mode
- Ethernet embedded switches:
- Microchip:
- fine-tune flow control and speed configurations in KSZ8xxx
- KSZ88X3: enable setting rmii reference
- Renesas:
- add jumbo frames support
- Marvell:
- 88E6xxx: add "eth-mac" and "rmon" stats support
- Ethernet PHYs:
- aquantia: add firmware load support
- at803x: refactor the driver to simplify adding support for more
chip variants
- NXP C45 TJA11xx: Add MACsec offload support
- Wifi:
- MediaTek (mt76):
- NVMEM EEPROM improvements
- mt7996 Extremely High Throughput (EHT) improvements
- mt7996 Wireless Ethernet Dispatcher (WED) support
- mt7996 36-bit DMA support
- Qualcomm (ath12k):
- support for a single MSI vector
- WCN7850: support AP mode
- Intel (iwlwifi):
- new debugfs file fw_dbg_clear
- allow concurrent P2P operation on DFS channels
- Bluetooth:
- QCA2066: support HFP offload
- ISO: more broadcast-related improvements
- NXP: better recovery in case receiver/transmitter get out of sync
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Paolo Abeni:
"The most interesting thing is probably the networking structs
reorganization and a significant amount of changes is around
self-tests.
Core & protocols:
- Analyze and reorganize core networking structs (socks, netdev,
netns, mibs) to optimize cacheline consumption and set up build
time warnings to safeguard against future header changes
This improves TCP performances with many concurrent connections up
to 40%
- Add page-pool netlink-based introspection, exposing the memory
usage and recycling stats. This helps indentify bad PP users and
possible leaks
- Refine TCP/DCCP source port selection to no longer favor even
source port at connect() time when IP_LOCAL_PORT_RANGE is set. This
lowers the time taken by connect() for hosts having many active
connections to the same destination
- Refactor the TCP bind conflict code, shrinking related socket
structs
- Refactor TCP SYN-Cookie handling, as a preparation step to allow
arbitrary SYN-Cookie processing via eBPF
- Tune optmem_max for 0-copy usage, increasing the default value to
128KB and namespecifying it
- Allow coalescing for cloned skbs coming from page pools, improving
RX performances with some common configurations
- Reduce extension header parsing overhead at GRO time
- Add bridge MDB bulk deletion support, allowing user-space to
request the deletion of matching entries
- Reorder nftables struct members, to keep data accessed by the
datapath first
- Introduce TC block ports tracking and use. This allows supporting
multicast-like behavior at the TC layer
- Remove UAPI support for retired TC qdiscs (dsmark, CBQ and ATM) and
classifiers (RSVP and tcindex)
- More data-race annotations
- Extend the diag interface to dump TCP bound-only sockets
- Conditional notification of events for TC qdisc class and actions
- Support for WPAN dynamic associations with nearby devices, to form
a sub-network using a specific PAN ID
- Implement SMCv2.1 virtual ISM device support
- Add support for Batman-avd mulicast packet type
BPF:
- Tons of verifier improvements:
- BPF register bounds logic and range support along with a large
test suite
- log improvements
- complete precision tracking support for register spills
- track aligned STACK_ZERO cases as imprecise spilled registers.
This improves the verifier "instructions processed" metric from
single digit to 50-60% for some programs
- support for user's global BPF subprogram arguments with few
commonly requested annotations for a better developer
experience
- support tracking of BPF_JNE which helps cases when the compiler
transforms (unsigned) "a > 0" into "if a == 0 goto xxx" and the
like
- several fixes
- Add initial TX metadata implementation for AF_XDP with support in
mlx5 and stmmac drivers. Two types of offloads are supported right
now, that is, TX timestamp and TX checksum offload
- Fix kCFI bugs in BPF all forms of indirect calls from BPF into
kernel and from kernel into BPF work with CFI enabled. This allows
BPF to work with CONFIG_FINEIBT=y
- Change BPF verifier logic to validate global subprograms lazily
instead of unconditionally before the main program, so they can be
guarded using BPF CO-RE techniques
- Support uid/gid options when mounting bpffs
- Add a new kfunc which acquires the associated cgroup of a task
within a specific cgroup v1 hierarchy where the latter is
identified by its id
- Extend verifier to allow bpf_refcount_acquire() of a map value
field obtained via direct load which is a use-case needed in
sched_ext
- Add BPF link_info support for uprobe multi link along with bpftool
integration for the latter
- Support for VLAN tag in XDP hints
- Remove deprecated bpfilter kernel leftovers given the project is
developed in user-space (https://github.com/facebook/bpfilter)
Misc:
- Support for parellel TC self-tests execution
- Increase MPTCP self-tests coverage
- Updated the bridge documentation, including several so-far
undocumented features
- Convert all the net self-tests to run in unique netns, to avoid
random failures due to conflict and allow concurrent runs
- Add TCP-AO self-tests
- Add kunit tests for both cfg80211 and mac80211
- Autogenerate Netlink families documentation from YAML spec
- Add yml-gen support for fixed headers and recursive nests, the tool
can now generate user-space code for all genetlink families for
which we have specs
- A bunch of additional module descriptions fixes
- Catch incorrect freeing of pages belonging to a page pool
Driver API:
- Rust abstractions for network PHY drivers; do not cover yet the
full C API, but already allow implementing functional PHY drivers
in rust
- Introduce queue and NAPI support in the netdev Netlink interface,
allowing complete access to the device <> NAPIs <> queues
relationship
- Introduce notifications filtering for devlink to allow control
application scale to thousands of instances
- Improve PHY validation, requesting rate matching information for
each ethtool link mode supported by both the PHY and host
- Add support for ethtool symmetric-xor RSS hash
- ACPI based Wifi band RFI (WBRF) mitigation feature for the AMD
platform
- Expose pin fractional frequency offset value over new DPLL generic
netlink attribute
- Convert older drivers to platform remove callback returning void
- Add support for PHY package MMD read/write
New hardware / drivers:
- Ethernet:
- Octeon CN10K devices
- Broadcom 5760X P7
- Qualcomm SM8550 SoC
- Texas Instrument DP83TG720S PHY
- Bluetooth:
- IMC Networks Bluetooth radio
Removed:
- WiFi:
- libertas 16-bit PCMCIA support
- Atmel at76c50x drivers
- HostAP ISA/PCMCIA style 802.11b driver
- zd1201 802.11b USB dongles
- Orinoco ISA/PCMCIA 802.11b driver
- Aviator/Raytheon driver
- Planet WL3501 driver
- RNDIS USB 802.11b driver
Driver updates:
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- allow one by one port representors creation and removal
- add temperature and clock information reporting
- add get/set for ethtool's header split ringparam
- add again FW logging
- adds support switchdev hardware packet mirroring
- iavf: implement symmetric-xor RSS hash
- igc: add support for concurrent physical and free-running
timers
- i40e: increase the allowable descriptors
- nVidia/Mellanox:
- Preparation for Socket-Direct multi-dev netdev. That will
allow in future releases combining multiple PFs devices
attached to different NUMA nodes under the same netdev
- Broadcom (bnxt):
- TX completion handling improvements
- add basic ntuple filter support
- reduce MSIX vectors usage for MQPRIO offload
- add VXLAN support, USO offload and TX coalesce completion
for P7
- Marvell Octeon EP:
- xmit-more support
- add PF-VF mailbox support and use it for FW notifications
for VFs
- Wangxun (ngbe/txgbe):
- implement ethtool functions to operate pause param, ring
param, coalesce channel number and msglevel
- Netronome/Corigine (nfp):
- add flow-steering support
- support UDP segmentation offload
- Ethernet NICs embedded, slower, virtual:
- Xilinx AXI: remove duplicate DMA code adopting the dma engine
driver
- stmmac: add support for HW-accelerated VLAN stripping
- TI AM654x sw: add mqprio, frame preemption & coalescing
- gve: add support for non-4k page sizes.
- virtio-net: support dynamic coalescing moderation
- nVidia/Mellanox Ethernet datacenter switches:
- allow firmware upgrade without a reboot
- more flexible support for bridge flooding via the compressed
FID flooding mode
- Ethernet embedded switches:
- Microchip:
- fine-tune flow control and speed configurations in KSZ8xxx
- KSZ88X3: enable setting rmii reference
- Renesas:
- add jumbo frames support
- Marvell:
- 88E6xxx: add "eth-mac" and "rmon" stats support
- Ethernet PHYs:
- aquantia: add firmware load support
- at803x: refactor the driver to simplify adding support for more
chip variants
- NXP C45 TJA11xx: Add MACsec offload support
- Wifi:
- MediaTek (mt76):
- NVMEM EEPROM improvements
- mt7996 Extremely High Throughput (EHT) improvements
- mt7996 Wireless Ethernet Dispatcher (WED) support
- mt7996 36-bit DMA support
- Qualcomm (ath12k):
- support for a single MSI vector
- WCN7850: support AP mode
- Intel (iwlwifi):
- new debugfs file fw_dbg_clear
- allow concurrent P2P operation on DFS channels
- Bluetooth:
- QCA2066: support HFP offload
- ISO: more broadcast-related improvements
- NXP: better recovery in case receiver/transmitter get out of sync"
* tag 'net-next-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1714 commits)
lan78xx: remove redundant statement in lan78xx_get_eee
lan743x: remove redundant statement in lan743x_ethtool_get_eee
bnxt_en: Fix RCU locking for ntuple filters in bnxt_rx_flow_steer()
bnxt_en: Fix RCU locking for ntuple filters in bnxt_srxclsrldel()
bnxt_en: Remove unneeded variable in bnxt_hwrm_clear_vnic_filter()
tcp: Revert no longer abort SYN_SENT when receiving some ICMP
Revert "mlx5 updates 2023-12-20"
Revert "net: stmmac: Enable Per DMA Channel interrupt"
ipvlan: Remove usage of the deprecated ida_simple_xx() API
ipvlan: Fix a typo in a comment
net/sched: Remove ipt action tests
net: stmmac: Use interrupt mode INTM=1 for per channel irq
net: stmmac: Add support for TX/RX channel interrupt
net: stmmac: Make MSI interrupt routine generic
dt-bindings: net: snps,dwmac: per channel irq
net: phy: at803x: make read_status more generic
net: phy: at803x: add support for cdt cross short test for qca808x
net: phy: at803x: refactor qca808x cable test get status function
net: phy: at803x: generalize cdt fault length function
net: ethernet: cortina: Drop TSO support
...
|
||
|
Baruch Siach
|
54a2ffe952 |
docs: admin-guide: hw_random: update rng-tools website
rng-tools upstream moved to github. New upstream does not appear to consider itself official website for hw_random. Drop that part. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/ef52ace5008fa934084442149f64f5f9ddbba465.1704720105.git.baruch@tkos.co.il |
||
|
Vegard Nossum
|
c48a7c44a1 |
docs: kernel_feat.py: fix potential command injection
The kernel-feat directive passes its argument straight to the shell.
This is unfortunate and unnecessary.
Let's always use paths relative to $srctree/Documentation/ and use
subprocess.check_call() instead of subprocess.Popen(shell=True).
This also makes the code shorter.
This is analogous to commit
|
||
|
Erwan Velu
|
03c305861c |
Documentation: admin-guide: PM: Fix two typos
Fix two typos in the admin-guide: - a missing e in "reference_perf" in cppc_sysfs.rst. - the amd_pstate sysfs path uses a dash instead of an underscore. Signed-off-by: Erwan Velu <e.velu@criteo.com> [ rjw: Subject and changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
||
|
Breno Leitao
|
aefb2f2e61 |
x86/bugs: Rename CONFIG_RETPOLINE => CONFIG_MITIGATION_RETPOLINE
Step 5/10 of the namespace unification of CPU mitigations related Kconfig options. [ mingo: Converted a few more uses in comments/messages as well. ] Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Ariel Miculas <amiculas@cisco.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20231121160740.1249350-6-leitao@debian.org |
||
|
Linus Torvalds
|
5fda5698c2 |
platform-drivers-x86 for v6.8-1
Highlights:
- Intel PMC / PMT / TPMI / uncore-freq / vsec improvements and
new platform support
- AMD PMC / PMF improvements and new platform support
- AMD ACPI based Wifi band RFI mitigation feature (WBRF)
- WMI bus driver cleanups and improvements (Armin Wolf)
- acer-wmi Predator PHN16-71 support
- New Silicom network appliance EC LEDs / GPIOs driver
The following is an automated git shortlog grouped by driver:
ACPI:
- scan: Add LNXVIDEO HID to ignore_serial_bus_ids[]
Add Silicom Platform Driver:
- Add Silicom Platform Driver
Documentation/driver-api:
- Add document about WBRF mechanism
ISST:
- Process read/write blocked feature status
Merge tag 'platform-drivers-x86-amd-wbrf-v6.8-1' into review-hans:
- Merge tag 'platform-drivers-x86-amd-wbrf-v6.8-1' into review-hans
Merge tag 'platform-drivers-x86-v6.7-3' into pdx86/for-next:
- Merge tag 'platform-drivers-x86-v6.7-3' into pdx86/for-next
Merge tag 'platform-drivers-x86-v6.7-6' into pdx86/for-next:
- Merge tag 'platform-drivers-x86-v6.7-6' into pdx86/for-next
Remove "X86 PLATFORM DRIVERS - ARCH" from MAINTAINERS:
- Remove "X86 PLATFORM DRIVERS - ARCH" from MAINTAINERS
acer-wmi:
- add fan speed monitoring for Predator PHN16-71
- Depend on ACPI_VIDEO instead of selecting it
- Add platform profile and mode key support for Predator PHN16-71
asus-laptop:
- remove redundant braces in if statements
asus-wmi:
- Convert to platform remove callback returning void
clk:
- x86: lpss-atom: Drop unneeded 'extern' in the header
dell-smbios-wmi:
- Stop using WMI chardev
- Use devm_get_free_pages()
hp-bioscfg:
- Removed needless asm-generic
hp-wmi:
- Convert to platform remove callback returning void
intel-uncore-freq:
- Add additional client processors
intel-wmi-sbl-fw-update:
- Use bus-based WMI interface
intel/pmc:
- Call pmc_get_low_power_modes from platform init
ips:
- Remove unused debug code
platform/mellanox:
- mlxbf-tmfifo: Remove unnecessary bool conversion
platform/x86/amd:
- Add support for AMD ACPI based Wifi band RFI mitigation feature
platform/x86/amd/pmc:
- Modify SMU message port for latest AMD platform
- Add 1Ah family series to STB support list
- Add idlemask support for 1Ah family
- call amd_pmc_get_ip_info() during driver probe
- Add VPE information for AMDI000A platform
- Send OS_HINT command for AMDI000A platform
platform/x86/amd/pmf:
- Return a status code only as a constant in two functions
- Return directly after a failed apmf_if_call() in apmf_sbios_heartbeat_notify()
- dump policy binary data
- Add capability to sideload of policy binary
- Add facility to dump TA inputs
- Make source_as_str() as non-static
- Add support to update system state
- Add support update p3t limit
- Add support to get inputs from other subsystems
- change amd_pmf_init_features() call sequence
- Add support for PMF Policy Binary
- Change return type of amd_pmf_set_dram_addr()
- Add support for PMF-TA interaction
- Add PMF TEE interface
platform/x86/dell:
- alienware-wmi: Use kasprintf()
platform/x86/intel-uncore-freq:
- Process read/write blocked feature status
platform/x86/intel/pmc:
- Add missing extern
- Add Lunar Lake M support to intel_pmc_core driver
- Add Arrow Lake S support to intel_pmc_core driver
- Add ssram_init flag in PMC discovery in Meteor Lake
- Move common code to core.c
- Add PSON residency counter for Alder Lake
- Add regmap for Tiger Lake H PCH
- Add PSON residency counter
- Fix in mtl_punit_pmt_init()
- Fix in pmc_core_ssram_get_pmc()
- Show Die C6 counter on Meteor Lake
- Add debug attribute for Die C6 counter
- Read low power mode requirements for MTL-M and MTL-P
- Retrieve LPM information using Intel PMT
- Display LPM requirements for multiple PMCs
- Find and register PMC telemetry entries
- Cleanup SSRAM discovery
- Allow pmc_core_ssram_init to fail
platform/x86/intel/pmc/arl:
- Add GBE LTR ignore during suspend
platform/x86/intel/pmc/lnl:
- Add GBE LTR ignore during suspend
platform/x86/intel/pmc/mtl:
- Use return value from pmc_core_ssram_init()
platform/x86/intel/pmt:
- telemetry: Export API to read telemetry
- Add header to struct intel_pmt_entry
platform/x86/intel/tpmi:
- Move TPMI ID definition
- Modify external interface to get read/write state
- Don't create devices for disabled features
platform/x86/intel/vsec:
- Add support for Lunar Lake M
- Add base address field
- Add intel_vsec_register
- Assign auxdev parent by argument
- Use cleanup.h
- remove platform_info from vsec device structure
- Move structures to header
- Remove unnecessary return
- Fix xa_alloc memory leak
platform/x86/intel/wmi:
- thunderbolt: Use bus-based WMI interface
silicom-platform:
- Fix spelling mistake "platfomr" -> "platform"
wmi:
- linux/wmi.h: fix Excess kernel-doc description warning
- Simplify get_subobj_info()
- Decouple ACPI notify handler from wmi_block_list
- Create WMI bus device first
- Use devres for resource handling
- Remove ACPI handlers after WMI devices
- Remove unused variable in address space handler
- Remove chardev interface
- Remove debug_event module param
- Remove debug_dump_wdg module param
- Add to_wmi_device() helper macro
- Add wmidev_block_set()
x86-android-tablets:
- Fix an IS_ERR() vs NULL check in probe
- Fix backlight ctrl for Lenovo Yoga Tab 3 Pro YT3-X90F
- Add audio codec info for Lenovo Yoga Tab 3 Pro YT3-X90F
- Add support for SPI device instantiation
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Merge tag 'platform-drivers-x86-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede:
- Intel PMC / PMT / TPMI / uncore-freq / vsec improvements and new
platform support
- AMD PMC / PMF improvements and new platform support
- AMD ACPI based Wifi band RFI mitigation feature (WBRF)
- WMI bus driver cleanups and improvements (Armin Wolf)
- acer-wmi Predator PHN16-71 support
- New Silicom network appliance EC LEDs / GPIOs driver
* tag 'platform-drivers-x86-v6.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (96 commits)
platform/x86/amd/pmc: Modify SMU message port for latest AMD platform
platform/x86/amd/pmc: Add 1Ah family series to STB support list
platform/x86/amd/pmc: Add idlemask support for 1Ah family
platform/x86/amd/pmc: call amd_pmc_get_ip_info() during driver probe
platform/x86/amd/pmc: Add VPE information for AMDI000A platform
platform/x86/amd/pmc: Send OS_HINT command for AMDI000A platform
platform/x86/amd/pmf: Return a status code only as a constant in two functions
platform/x86/amd/pmf: Return directly after a failed apmf_if_call() in apmf_sbios_heartbeat_notify()
platform/x86: wmi: linux/wmi.h: fix Excess kernel-doc description warning
platform/x86/intel/pmc: Add missing extern
platform/x86/intel/pmc/lnl: Add GBE LTR ignore during suspend
platform/x86/intel/pmc/arl: Add GBE LTR ignore during suspend
platform/x86: intel-uncore-freq: Add additional client processors
platform/x86: Remove "X86 PLATFORM DRIVERS - ARCH" from MAINTAINERS
platform/x86: hp-bioscfg: Removed needless asm-generic
platform/x86/intel/pmc: Add Lunar Lake M support to intel_pmc_core driver
platform/x86/intel/pmc: Add Arrow Lake S support to intel_pmc_core driver
platform/x86/intel/pmc: Add ssram_init flag in PMC discovery in Meteor Lake
platform/x86/intel/pmc: Move common code to core.c
platform/x86/intel/pmc: Add PSON residency counter for Alder Lake
...
|
||
|
Linus Torvalds
|
da96801729 |
regulator: Updates for v6.8
The main updates for this release are around monitoring of regulators,
largely for error handling purposes. We allow the stream of regulator
events to be seen by userspace as netlink events and allow system
integrators to describe individual regulators as system critical with
information on how long the system is expected to last on error. The
system level error handling is very much about best effort problem
mitigation rather than providing something fully robust, the initial
drive was to provide a mechanism for trying to avoid initiating any new
writes to flash once we notice the power going out.
Otherwise it's very quiet, mainly several new Qualcomm devices.
- Support for marking regulators as system critical and providing
information on how long the system might last with those regulators
in a failure state, hooked into the existing critical shutdown error
handling.
- Optional support for generating netlink events for events, there are
use cases for system monitoring UIs and error handling.
- A command line option to leave unused controllable regulators
enabled, useful for debugging. We already only disable regulators we
were explicitly given permission to control.
- Support for Quacomm MP5496, PM8010 and PM8937.
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Merge tag 'regulator-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown:
"The main updates for this release are around monitoring of regulators,
largely for error handling purposes. We allow the stream of regulator
events to be seen by userspace as netlink events and allow system
integrators to describe individual regulators as system critical with
information on how long the system is expected to last on error. The
system level error handling is very much about best effort problem
mitigation rather than providing something fully robust, the initial
drive was to provide a mechanism for trying to avoid initiating any
new writes to flash once we notice the power going out.
Otherwise it's very quiet, mainly several new Qualcomm devices.
- Support for marking regulators as system critical and providing
information on how long the system might last with those regulators
in a failure state, hooked into the existing critical shutdown
error handling.
- Optional support for generating netlink events for events, there
are use cases for system monitoring UIs and error handling.
- A command line option to leave unused controllable regulators
enabled, useful for debugging. We already only disable regulators
we were explicitly given permission to control.
- Support for Quacomm MP5496, PM8010 and PM8937"
* tag 'regulator-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (31 commits)
regulator: event: Ensure atomicity for sequence number
uapi: regulator: Fix typo
regulator: Reuse LINEAR_RANGE() in REGULATOR_LINEAR_RANGE()
dt-bindings: regulator: qcom,usb-vbus-regulator: clean up example
regulator: qcom_smd: Add LDO5 MP5496 regulator
regulator: qcom-rpmh: add support for pm8010 regulators
regulator: dt-bindings: qcom,rpmh: add compatible for pm8010
regulator: qcom-rpmh: extend to support multiple linear voltage ranges
regulator: wm8350: Convert to platform remove callback returning void
regulator: virtual: Convert to platform remove callback returning void
regulator: userspace-consumer: Convert to platform remove callback returning void
regulator: uniphier: Convert to platform remove callback returning void
regulator: stm32-vrefbuf: Convert to platform remove callback returning void
regulator: db8500-prcmu: Convert to platform remove callback returning void
regulator: bd9571mwv: Convert to platform remove callback returning void
regulator: arizona-ldo1: Convert to platform remove callback returning void
regulator: event: Add regulator netlink event support
regulator: event: Add regulator netlink event support
regulator: stpmic1: Fix kernel-doc notation warnings
regulator: palmas: remove redundant initialization of pointer pdata
...
|
||
|
Linus Torvalds
|
fb46e22a9e |
Many singleton patches against the MM code. The patch series which
are included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the
series
"maple_tree: add mt_free_one() and mt_attr() helpers"
"Some cleanups of maple tree"
- In the series "mm: use memmap_on_memory semantics for dax/kmem"
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few
fixes) in the patch series
"Add folio_zero_tail() and folio_fill_tail()"
"Make folio_start_writeback return void"
"Fix fault handler's handling of poisoned tail pages"
"Convert aops->error_remove_page to ->error_remove_folio"
"Finish two folio conversions"
"More swap folio conversions"
- Kefeng Wang has also contributed folio-related work in the series
"mm: cleanup and use more folio in page fault"
- Jim Cromie has improved the kmemleak reporting output in the
series "tweak kmemleak report format".
- In the series "stackdepot: allow evicting stack traces" Andrey
Konovalov to permits clients (in this case KASAN) to cause
eviction of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series "mm:
page_alloc: fixes for high atomic reserve caluculations".
- Dmitry Rokosov has added to the samples/ dorectory some sample
code for a userspace memcg event listener application. See the
series "samples: introduce cgroup events listeners".
- Some mapletree maintanance work from Liam Howlett in the series
"maple_tree: iterator state changes".
- Nhat Pham has improved zswap's approach to writeback in the
series "workload-specific and memory pressure-driven zswap
writeback".
- DAMON/DAMOS feature and maintenance work from SeongJae Park in
the series
"mm/damon: let users feed and tame/auto-tune DAMOS"
"selftests/damon: add Python-written DAMON functionality tests"
"mm/damon: misc updates for 6.8"
- Yosry Ahmed has improved memcg's stats flushing in the series
"mm: memcg: subtree stats flushing and thresholds".
- In the series "Multi-size THP for anonymous memory" Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series "More buffer_head
cleanups".
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
"userfaultfd move option". UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a "KSM Advisor", in the series
"mm/ksm: Add ksm advisor". This is a governor which tunes KSM's
scanning aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory
use in the series "mm/zswap: dstmem reuse optimizations and
cleanups".
- Matthew Wilcox has performed some maintenance work on the
writeback code, both code and within filesystems. The series is
"Clean up the writeback paths".
- Andrey Konovalov has optimized KASAN's handling of alloc and
free stack traces for secondary-level allocators, in the series
"kasan: save mempool stack traces".
- Andrey also performed some KASAN maintenance work in the series
"kasan: assorted clean-ups".
- David Hildenbrand has gone to town on the rmap code. Cleanups,
more pte batching, folio conversions and more. See the series
"mm/rmap: interface overhaul".
- Kinsey Ho has contributed some maintenance work on the MGLRU
code in the series "mm/mglru: Kconfig cleanup".
- Matthew Wilcox has contributed lruvec page accounting code
cleanups in the series "Remove some lruvec page accounting
functions".
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Merge tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Peng Zhang has done some mapletree maintainance work in the series
'maple_tree: add mt_free_one() and mt_attr() helpers'
'Some cleanups of maple tree'
- In the series 'mm: use memmap_on_memory semantics for dax/kmem'
Vishal Verma has altered the interworking between memory-hotplug
and dax/kmem so that newly added 'device memory' can more easily
have its memmap placed within that newly added memory.
- Matthew Wilcox continues folio-related work (including a few fixes)
in the patch series
'Add folio_zero_tail() and folio_fill_tail()'
'Make folio_start_writeback return void'
'Fix fault handler's handling of poisoned tail pages'
'Convert aops->error_remove_page to ->error_remove_folio'
'Finish two folio conversions'
'More swap folio conversions'
- Kefeng Wang has also contributed folio-related work in the series
'mm: cleanup and use more folio in page fault'
- Jim Cromie has improved the kmemleak reporting output in the series
'tweak kmemleak report format'.
- In the series 'stackdepot: allow evicting stack traces' Andrey
Konovalov to permits clients (in this case KASAN) to cause eviction
of no longer needed stack traces.
- Charan Teja Kalla has fixed some accounting issues in the page
allocator's atomic reserve calculations in the series 'mm:
page_alloc: fixes for high atomic reserve caluculations'.
- Dmitry Rokosov has added to the samples/ dorectory some sample code
for a userspace memcg event listener application. See the series
'samples: introduce cgroup events listeners'.
- Some mapletree maintanance work from Liam Howlett in the series
'maple_tree: iterator state changes'.
- Nhat Pham has improved zswap's approach to writeback in the series
'workload-specific and memory pressure-driven zswap writeback'.
- DAMON/DAMOS feature and maintenance work from SeongJae Park in the
series
'mm/damon: let users feed and tame/auto-tune DAMOS'
'selftests/damon: add Python-written DAMON functionality tests'
'mm/damon: misc updates for 6.8'
- Yosry Ahmed has improved memcg's stats flushing in the series 'mm:
memcg: subtree stats flushing and thresholds'.
- In the series 'Multi-size THP for anonymous memory' Ryan Roberts
has added a runtime opt-in feature to transparent hugepages which
improves performance by allocating larger chunks of memory during
anonymous page faults.
- Matthew Wilcox has also contributed some cleanup and maintenance
work against eh buffer_head code int he series 'More buffer_head
cleanups'.
- Suren Baghdasaryan has done work on Andrea Arcangeli's series
'userfaultfd move option'. UFFDIO_MOVE permits userspace heap
compaction algorithms to move userspace's pages around rather than
UFFDIO_COPY'a alloc/copy/free.
- Stefan Roesch has developed a 'KSM Advisor', in the series 'mm/ksm:
Add ksm advisor'. This is a governor which tunes KSM's scanning
aggressiveness in response to userspace's current needs.
- Chengming Zhou has optimized zswap's temporary working memory use
in the series 'mm/zswap: dstmem reuse optimizations and cleanups'.
- Matthew Wilcox has performed some maintenance work on the writeback
code, both code and within filesystems. The series is 'Clean up the
writeback paths'.
- Andrey Konovalov has optimized KASAN's handling of alloc and free
stack traces for secondary-level allocators, in the series 'kasan:
save mempool stack traces'.
- Andrey also performed some KASAN maintenance work in the series
'kasan: assorted clean-ups'.
- David Hildenbrand has gone to town on the rmap code. Cleanups, more
pte batching, folio conversions and more. See the series 'mm/rmap:
interface overhaul'.
- Kinsey Ho has contributed some maintenance work on the MGLRU code
in the series 'mm/mglru: Kconfig cleanup'.
- Matthew Wilcox has contributed lruvec page accounting code cleanups
in the series 'Remove some lruvec page accounting functions'"
* tag 'mm-stable-2024-01-08-15-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (361 commits)
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
mm, treewide: introduce NR_PAGE_ORDERS
selftests/mm: add separate UFFDIO_MOVE test for PMD splitting
selftests/mm: skip test if application doesn't has root privileges
selftests/mm: conform test to TAP format output
selftests: mm: hugepage-mmap: conform to TAP format output
selftests/mm: gup_test: conform test to TAP format output
mm/selftests: hugepage-mremap: conform test to TAP format output
mm/vmstat: move pgdemote_* out of CONFIG_NUMA_BALANCING
mm: zsmalloc: return -ENOSPC rather than -EINVAL in zs_malloc while size is too large
mm/memcontrol: remove __mod_lruvec_page_state()
mm/khugepaged: use a folio more in collapse_file()
slub: use a folio in __kmalloc_large_node
slub: use folio APIs in free_large_kmalloc()
slub: use alloc_pages_node() in alloc_slab_page()
mm: remove inc/dec lruvec page state functions
mm: ratelimit stat flush from workingset shrinker
kasan: stop leaking stack trace handles
mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
mm/mglru: add dummy pmd_dirty()
...
|
||
|
Linus Torvalds
|
9f8413c4a6 |
cgroup: Changes for v6.8
- Yafang Shao added task_get_cgroup1() helper to enable a similar BPF helper so that BPF progs can be more useful on cgroup1 hierarchies. While cgroup1 is mostly in maintenance mode, this addition is very small while having an outsized usefulness for users who are still on cgroup1. Yafang also optimized root cgroup list access by making it RCU protected in the process. - Waiman Long optimized rstat operation leading to substantially lower and more consistent lock hold time while flushing the hierarchical statistics. As the lock can be acquired briefly in various hot paths, this reduction has cascading benefits. - Waiman also improved the quality of isolation for cpuset's isolated partitions. CPUs which are allocated to isolated partitions are now excluded from running unbound work items and cpu_is_isolated() test which is used by vmstat and memcg to reduce interference now includes cpuset isolated CPUs. While it isn't there yet, the hope is eventually reaching parity with the isolation level provided by the `isolcpus` boot param but in a dynamic manner. This involved a couple workqueue patches which were applied directly to cgroup/for-6.8 rather than ping-ponged through the wq tree. This was because the wq code change was small and the area is usually very static and unlikely to cause conflicts. However, luck had it that there was a wq bug fix in the area during the 6.7 cycle which caused a conflict. The conflict is contextual but can be a bit confusing to resolve, so there is one merge from wq/for-6.7-fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZYnuJg4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGQ5kAP9nMMWqi+R1HeG7+hWROTVjQZ0OM9KRcpZ1TmjF FNbkJgEAzt+sPnoWwYDTSI7pkNeZ/IM7x1qkkKGvENNtUXrz0Ac= =PyYN -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Yafang Shao added task_get_cgroup1() helper to enable a similar BPF helper so that BPF progs can be more useful on cgroup1 hierarchies. While cgroup1 is mostly in maintenance mode, this addition is very small while having an outsized usefulness for users who are still on cgroup1. Yafang also optimized root cgroup list access by making it RCU protected in the process. - Waiman Long optimized rstat operation leading to substantially lower and more consistent lock hold time while flushing the hierarchical statistics. As the lock can be acquired briefly in various hot paths, this reduction has cascading benefits. - Waiman also improved the quality of isolation for cpuset's isolated partitions. CPUs which are allocated to isolated partitions are now excluded from running unbound work items and cpu_is_isolated() test which is used by vmstat and memcg to reduce interference now includes cpuset isolated CPUs. While it isn't there yet, the hope is eventually reaching parity with the isolation level provided by the `isolcpus` boot param but in a dynamic manner. * tag 'cgroup-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: cgroup: Move rcu_head up near the top of cgroup_root cgroup/cpuset: Include isolated cpuset CPUs in cpu_is_isolated() check cgroup: Avoid false cacheline sharing of read mostly rstat_cpu cgroup/rstat: Optimize cgroup_rstat_updated_list() cgroup: Fix documentation for cpu.idle cgroup/cpuset: Expose cpuset.cpus.isolated workqueue: Move workqueue_set_unbound_cpumask() and its helpers inside CONFIG_SYSFS cgroup/rstat: Reduce cpu_lock hold time in cgroup_rstat_flush_locked() cgroup/cpuset: Take isolated CPUs out of workqueue unbound cpumask cgroup/cpuset: Keep track of CPUs in isolated partitions selftests/cgroup: Minor code cleanup and reorganization of test_cpuset_prs.sh workqueue: Add workqueue_unbound_exclude_cpumask() to exclude CPUs from wq_unbound_cpumask selftests: cgroup: Fixes a typo in a comment cgroup: Add a new helper for cgroup1 hierarchy cgroup: Add annotation for holding namespace_sem in current_cgns_cgroup_from_root() cgroup: Eliminate the need for cgroup_mutex in proc_cgroup_show() cgroup: Make operations on the cgroup root_list RCU safe cgroup: Remove unnecessary list_empty() |
||
|
Kirill A. Shutemov
|
5e0a760b44 |
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
commit
|
||
|
Kirill A. Shutemov
|
fd37721803 |
mm, treewide: introduce NR_PAGE_ORDERS
NR_PAGE_ORDERS defines the number of page orders supported by the page allocator, ranging from 0 to MAX_ORDER, MAX_ORDER + 1 in total. NR_PAGE_ORDERS assists in defining arrays of page orders and allows for more natural iteration over them. [kirill.shutemov@linux.intel.com: fixup for kerneldoc warning] Link: https://lkml.kernel.org/r/20240101111512.7empzyifq7kxtzk3@box Link: https://lkml.kernel.org/r/20231228144704.14033-1-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Vegard Nossum
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3231dd5862 |
docs: kernel_abi.py: fix command injection
The kernel-abi directive passes its argument straight to the shell. This is unfortunate and unnecessary. Let's always use paths relative to $srctree/Documentation/ and use subprocess.check_call() instead of subprocess.Popen(shell=True). This also makes the code shorter. Link: https://fosstodon.org/@jani/111676532203641247 Reported-by: Jani Nikula <jani.nikula@intel.com> Cc: stable@vger.kernel.org Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231231235959.3342928-2-vegard.nossum@oracle.com |
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Andrew Jones
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323925ed6d |
RISC-V: paravirt: Add skeleton for pv-time support
Add the files and functions needed to support paravirt time on RISC-V. Also include the common code needed for the first application of pv-time, which is steal-time. In the next patches we'll complete the functions to fully enable steal-time support. Acked-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org> Reviewed-by: Atish Patra <atishp@rivosinc.com> Signed-off-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Anup Patel <anup@brainfault.org> |
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Nhat Pham
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501a06fe8e |
zswap: memcontrol: implement zswap writeback disabling
During our experiment with zswap, we sometimes observe swap IOs due to occasional zswap store failures and writebacks-to-swap. These swapping IOs prevent many users who cannot tolerate swapping from adopting zswap to save memory and improve performance where possible. This patch adds the option to disable this behavior entirely: do not writeback to backing swapping device when a zswap store attempt fail, and do not write pages in the zswap pool back to the backing swap device (both when the pool is full, and when the new zswap shrinker is called). This new behavior can be opted-in/out on a per-cgroup basis via a new cgroup file. By default, writebacks to swap device is enabled, which is the previous behavior. Initially, writeback is enabled for the root cgroup, and a newly created cgroup will inherit the current setting of its parent. Note that this is subtly different from setting memory.swap.max to 0, as it still allows for pages to be stored in the zswap pool (which itself consumes swap space in its current form). This patch should be applied on top of the zswap shrinker series: https://lore.kernel.org/linux-mm/20231130194023.4102148-1-nphamcs@gmail.com/ as it also disables the zswap shrinker, a major source of zswap writebacks. For the most part, this feature is motivated by internal parties who have already established their opinions regarding swapping - the workloads that are highly sensitive to IO, and especially those who are using servers with really slow disk performance (for instance, massive but slow HDDs). For these folks, it's impossible to convince them to even entertain zswap if swapping also comes as a packaged deal. Writeback disabling is quite a useful feature in these situations - on a mixed workloads deployment, they can disable writeback for the more IO-sensitive workloads, and enable writeback for other background workloads. For instance, on a server with HDD, I allocate memories and populate them with random values (so that zswap store will always fail), and specify memory.high low enough to trigger reclaim. The time it takes to allocate the memories and just read through it a couple of times (doing silly things like computing the values' average etc.): zswap.writeback disabled: real 0m30.537s user 0m23.687s sys 0m6.637s 0 pages swapped in 0 pages swapped out zswap.writeback enabled: real 0m45.061s user 0m24.310s sys 0m8.892s 712686 pages swapped in 461093 pages swapped out (the last two lines are from vmstat -s). [nphamcs@gmail.com: add a comment about recurring zswap store failures leading to reclaim inefficiency] Link: https://lkml.kernel.org/r/20231221005725.3446672-1-nphamcs@gmail.com Link: https://lkml.kernel.org/r/20231207192406.3809579-1-nphamcs@gmail.com Signed-off-by: Nhat Pham <nphamcs@gmail.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Chris Li <chrisl@kernel.org> Cc: Dan Streetman <ddstreet@ieee.org> Cc: David Heidelberg <david@ixit.cz> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Seth Jennings <sjenning@redhat.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Zefan Li <lizefan.x@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Stefan Roesch
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0710f38ad2 |
mm/ksm: document ksm advisor and its sysfs knobs
This documents the KSM advisor and its new knobs in /sys/fs/kernel/mm. Link: https://lkml.kernel.org/r/20231218231054.1625219-5-shr@devkernel.io Signed-off-by: Stefan Roesch <shr@devkernel.io> Acked-by: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrea Arcangeli
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adef440691 |
userfaultfd: UFFDIO_MOVE uABI
Implement the uABI of UFFDIO_MOVE ioctl. UFFDIO_COPY performs ~20% better than UFFDIO_MOVE when the application needs pages to be allocated [1]. However, with UFFDIO_MOVE, if pages are available (in userspace) for recycling, as is usually the case in heap compaction algorithms, then we can avoid the page allocation and memcpy (done by UFFDIO_COPY). Also, since the pages are recycled in the userspace, we avoid the need to release (via madvise) the pages back to the kernel [2]. We see over 40% reduction (on a Google pixel 6 device) in the compacting thread's completion time by using UFFDIO_MOVE vs. UFFDIO_COPY. This was measured using a benchmark that emulates a heap compaction implementation using userfaultfd (to allow concurrent accesses by application threads). More details of the usecase are explained in [2]. Furthermore, UFFDIO_MOVE enables moving swapped-out pages without touching them within the same vma. Today, it can only be done by mremap, however it forces splitting the vma. [1] https://lore.kernel.org/all/1425575884-2574-1-git-send-email-aarcange@redhat.com/ [2] https://lore.kernel.org/linux-mm/CA+EESO4uO84SSnBhArH4HvLNhaUQ5nZKNKXqxRCyjniNVjp0Aw@mail.gmail.com/ Update for the ioctl_userfaultfd(2) manpage: UFFDIO_MOVE (Since Linux xxx) Move a continuous memory chunk into the userfault registered range and optionally wake up the blocked thread. The source and destination addresses and the number of bytes to move are specified by the src, dst, and len fields of the uffdio_move structure pointed to by argp: struct uffdio_move { __u64 dst; /* Destination of move */ __u64 src; /* Source of move */ __u64 len; /* Number of bytes to move */ __u64 mode; /* Flags controlling behavior of move */ __s64 move; /* Number of bytes moved, or negated error */ }; The following value may be bitwise ORed in mode to change the behavior of the UFFDIO_MOVE operation: UFFDIO_MOVE_MODE_DONTWAKE Do not wake up the thread that waits for page-fault resolution UFFDIO_MOVE_MODE_ALLOW_SRC_HOLES Allow holes in the source virtual range that is being moved. When not specified, the holes will result in ENOENT error. When specified, the holes will be accounted as successfully moved memory. This is mostly useful to move hugepage aligned virtual regions without knowing if there are transparent hugepages in the regions or not, but preventing the risk of having to split the hugepage during the operation. The move field is used by the kernel to return the number of bytes that was actually moved, or an error (a negated errno- style value). If the value returned in move doesn't match the value that was specified in len, the operation fails with the error EAGAIN. The move field is output-only; it is not read by the UFFDIO_MOVE operation. The operation may fail for various reasons. Usually, remapping of pages that are not exclusive to the given process fail; once KSM might deduplicate pages or fork() COW-shares pages during fork() with child processes, they are no longer exclusive. Further, the kernel might only perform lightweight checks for detecting whether the pages are exclusive, and return -EBUSY in case that check fails. To make the operation more likely to succeed, KSM should be disabled, fork() should be avoided or MADV_DONTFORK should be configured for the source VMA before fork(). This ioctl(2) operation returns 0 on success. In this case, the entire area was moved. On error, -1 is returned and errno is set to indicate the error. Possible errors include: EAGAIN The number of bytes moved (i.e., the value returned in the move field) does not equal the value that was specified in the len field. EINVAL Either dst or len was not a multiple of the system page size, or the range specified by src and len or dst and len was invalid. EINVAL An invalid bit was specified in the mode field. ENOENT The source virtual memory range has unmapped holes and UFFDIO_MOVE_MODE_ALLOW_SRC_HOLES is not set. EEXIST The destination virtual memory range is fully or partially mapped. EBUSY The pages in the source virtual memory range are either pinned or not exclusive to the process. The kernel might only perform lightweight checks for detecting whether the pages are exclusive. To make the operation more likely to succeed, KSM should be disabled, fork() should be avoided or MADV_DONTFORK should be configured for the source virtual memory area before fork(). ENOMEM Allocating memory needed for the operation failed. ESRCH The target process has exited at the time of a UFFDIO_MOVE operation. Link: https://lkml.kernel.org/r/20231206103702.3873743-3-surenb@google.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Signed-off-by: Suren Baghdasaryan <surenb@google.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Brian Geffon <bgeffon@google.com> Cc: Christian Brauner <brauner@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jann Horn <jannh@google.com> Cc: Kalesh Singh <kaleshsingh@google.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Lokesh Gidra <lokeshgidra@google.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Nicolas Geoffray <ngeoffray@google.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: ZhangPeng <zhangpeng362@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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e93b81a3fc |
Docs/admin-guide/mm/damon/usage: use a list for 'state' sysfs file input commands
There are eight command inputs for 'state' DAMON sysfs file, and those are verbosely explained in multiple paragraphs. It is not easy to find explanation of specific command, and getting whole picture of supported commands. Replace the paragraphs with a list. Link: https://lkml.kernel.org/r/20231213190338.54146-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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9c8c315da2 |
Docs/admin-guide/mm/damon/usage: add links to sysfs files hierarchy
'Sysfs Files Hierarchy' section of DAMON usage document shows whole picture of the interface. Then sections for detailed explanation of the files follow. Due to the amount of the files, navigating between the whole picture and the section for specific files sometimes require no subtle amount of scrolling. Add links from the whole picture to the dedicated sections for making the navigation easier. Link: https://lkml.kernel.org/r/20231213190338.54146-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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c7ae9634a4 |
Docs/admin-guide/mm/damon/usage: update context directory section label
The label for context DAMON sysfs directory section is having name sysfs_contexts. The name would be better to be used for the contexts directory. Rename it to represent a single context. Link: https://lkml.kernel.org/r/20231213190338.54146-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ryan Roberts
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3485b88390 |
mm: thp: introduce multi-size THP sysfs interface
In preparation for adding support for anonymous multi-size THP, introduce new sysfs structure that will be used to control the new behaviours. A new directory is added under transparent_hugepage for each supported THP size, and contains an `enabled` file, which can be set to "inherit" (to inherit the global setting), "always", "madvise" or "never". For now, the kernel still only supports PMD-sized anonymous THP, so only 1 directory is populated. The first half of the change converts transhuge_vma_suitable() and hugepage_vma_check() so that they take a bitfield of orders for which the user wants to determine support, and the functions filter out all the orders that can't be supported, given the current sysfs configuration and the VMA dimensions. The resulting functions are renamed to thp_vma_suitable_orders() and thp_vma_allowable_orders() respectively. Convenience functions that take a single, unencoded order and return a boolean are also defined as thp_vma_suitable_order() and thp_vma_allowable_order(). The second half of the change implements the new sysfs interface. It has been done so that each supported THP size has a `struct thpsize`, which describes the relevant metadata and is itself a kobject. This is pretty minimal for now, but should make it easy to add new per-thpsize files to the interface if needed in future (e.g. per-size defrag). Rather than keep the `enabled` state directly in the struct thpsize, I've elected to directly encode it into huge_anon_orders_[always|madvise|inherit] bitfields since this reduces the amount of work required in thp_vma_allowable_orders() which is called for every page fault. See Documentation/admin-guide/mm/transhuge.rst, as modified by this commit, for details of how the new sysfs interface works. [ryan.roberts@arm.com: fix build warning when CONFIG_SYSFS is disabled] Link: https://lkml.kernel.org/r/20231211125320.3997543-1-ryan.roberts@arm.com Link: https://lkml.kernel.org/r/20231207161211.2374093-4-ryan.roberts@arm.com Signed-off-by: Ryan Roberts <ryan.roberts@arm.com> Reviewed-by: Barry Song <v-songbaohua@oppo.com> Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com> Tested-by: John Hubbard <jhubbard@nvidia.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: David Rientjes <rientjes@google.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Itaru Kitayama <itaru.kitayama@gmail.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Yin Fengwei <fengwei.yin@intel.com> Cc: Yu Zhao <yuzhao@google.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Shyam Sundar S K
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d0ba7ad438 |
platform/x86/amd/pmf: Add support to update system state
PMF driver based on the output actions from the TA can request to update the system states like entering s0i3, lock screen etc. by generating an uevent. Based on the udev rules set in the userspace the event id matching the uevent shall get updated accordingly using the systemctl. Sample udev rules under Documentation/admin-guide/pmf.rst. Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com> Link: https://lore.kernel.org/r/20231212014705.2017474-9-Shyam-sundar.S-k@amd.com Signed-off-by: Hans de Goede <hdegoede@redhat.com> |
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Vlastimil Babka
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a3a2782745 |
Documentation, mm/unaccepted: document accept_memory kernel parameter
The accept_memory kernel parameter was added in commit
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Alexander Graf
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2678fd2fe9 |
initramfs: Expose retained initrd as sysfs file
When the kernel command line option "retain_initrd" is set, we do not free the initrd memory. However, we also don't expose it to anyone for consumption. That leaves us in a weird situation where the only user of this feature is ppc64 and arm64 specific kexec tooling. To make it more generally useful, this patch adds a kobject to the firmware object that contains the initrd context when "retain_initrd" is set. That way, we can access the initrd any time after boot from user space and for example hand it into kexec as --initrd parameter if we want to reboot the same initrd. Or inspect it directly locally. With this patch applied, there is a new /sys/firmware/initrd file when the kernel was booted with an initrd and "retain_initrd" command line option is set. Signed-off-by: Alexander Graf <graf@amazon.com> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Link: https://lore.kernel.org/r/20231207235654.16622-1-graf@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Rex Nie
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121d0ba224 |
Documentation: Remove redundant file names from examples
Since most examples use the ddcmd alias, remove the redundant file names Signed-off-by: Rex Nie <rex.nie@jaguarmicro.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231213073735.2850-1-rex.nie@jaguarmicro.com |
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Eric Dumazet
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4944566706 |
net: increase optmem_max default value
For many years, /proc/sys/net/core/optmem_max default value on a 64bit kernel has been 20 KB. Regular usage of TCP tx zerocopy needs a bit more. Google has used 128KB as the default value for 7 years without any problem. Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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Shuai Xue
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cae40614cd |
docs: perf: Add description for Synopsys DesignWare PCIe PMU driver
Alibaba's T-Head Yitan 710 SoC includes Synopsys' DesignWare Core PCIe controller which implements PMU for performance and functional debugging to facilitate system maintenance. Document it to provide guidance on how to use it. Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Yicong Yang <yangyicong@hisilicon.com> Tested-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> Link: https://lore.kernel.org/r/20231208025652.87192-2-xueshuai@linux.alibaba.com Signed-off-by: Will Deacon <will@kernel.org> |
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SeongJae Park
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6140edeea8 |
Docs/admin-guide/mm/damon/usage: document for quota goals
Update DAMON sysfs usage for newly added DAMOS quota goals interface. Link: https://lkml.kernel.org/r/20231130023652.50284-10-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: David Gow <davidgow@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nhat Pham
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b5ba474f3f |
zswap: shrink zswap pool based on memory pressure
Currently, we only shrink the zswap pool when the user-defined limit is hit. This means that if we set the limit too high, cold data that are unlikely to be used again will reside in the pool, wasting precious memory. It is hard to predict how much zswap space will be needed ahead of time, as this depends on the workload (specifically, on factors such as memory access patterns and compressibility of the memory pages). This patch implements a memcg- and NUMA-aware shrinker for zswap, that is initiated when there is memory pressure. The shrinker does not have any parameter that must be tuned by the user, and can be opted in or out on a per-memcg basis. Furthermore, to make it more robust for many workloads and prevent overshrinking (i.e evicting warm pages that might be refaulted into memory), we build in the following heuristics: * Estimate the number of warm pages residing in zswap, and attempt to protect this region of the zswap LRU. * Scale the number of freeable objects by an estimate of the memory saving factor. The better zswap compresses the data, the fewer pages we will evict to swap (as we will otherwise incur IO for relatively small memory saving). * During reclaim, if the shrinker encounters a page that is also being brought into memory, the shrinker will cautiously terminate its shrinking action, as this is a sign that it is touching the warmer region of the zswap LRU. As a proof of concept, we ran the following synthetic benchmark: build the linux kernel in a memory-limited cgroup, and allocate some cold data in tmpfs to see if the shrinker could write them out and improved the overall performance. Depending on the amount of cold data generated, we observe from 14% to 35% reduction in kernel CPU time used in the kernel builds. [nphamcs@gmail.com: check shrinker enablement early, use less costly stat flushing] Link: https://lkml.kernel.org/r/20231206194456.3234203-1-nphamcs@gmail.com Link: https://lkml.kernel.org/r/20231130194023.4102148-7-nphamcs@gmail.com Signed-off-by: Nhat Pham <nphamcs@gmail.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Tested-by: Bagas Sanjaya <bagasdotme@gmail.com> Cc: Chris Li <chrisl@kernel.org> Cc: Dan Streetman <ddstreet@ieee.org> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Seth Jennings <sjenning@redhat.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Paul E. McKenney
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4e58aaeebb |
rcu: Restrict access to RCU CPU stall notifiers
Although the RCU CPU stall notifiers can be useful for dumping state when tracking down delicate forward-progress bugs where NUMA effects cause cache lines to be delivered to a given CPU regularly, but always in a state that prevents that CPU from making forward progress. These bugs can be detected by the RCU CPU stall-warning mechanism, but in some cases, the stall-warnings printk()s disrupt the forward-progress bug before any useful state can be obtained. Unfortunately, the notifier mechanism added by commit |
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Sergey Senozhatsky
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a7a0350583 |
zram: split memory-tracking and ac-time tracking
ZRAM_MEMORY_TRACKING enables two features: - per-entry ac-time tracking - debugfs interface The latter one is the reason why memory-tracking depends on DEBUG_FS, while the former one is used far beyond debugging these days. Namely ac-time is used for fine grained writeback of idle entries (pages). Move ac-time tracking under its own config option so that it can be enabled (along with writeback) on systems without DEBUG_FS. [senozhatsky@chromium.org: ifdef fixup, per Dmytro] Link: https://lkml.kernel.org/r/20231117013543.540280-1-senozhatsky@chromium.org Link: https://lkml.kernel.org/r/20231115024223.4133148-1-senozhatsky@chromium.org Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Dmytro Maluka <dmaluka@chromium.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrei Vagin
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e6a9a2cbc1 |
fs/proc/task_mmu: report SOFT_DIRTY bits through the PAGEMAP_SCAN ioctl
The PAGEMAP_SCAN ioctl returns information regarding page table entries. It is more efficient compared to reading pagemap files. CRIU can start to utilize this ioctl, but it needs info about soft-dirty bits to track memory changes. We are aware of a new method for tracking memory changes implemented in the PAGEMAP_SCAN ioctl. For CRIU, the primary advantage of this method is its usability by unprivileged users. However, it is not feasible to transparently replace the soft-dirty tracker with the new one. The main problem here is userfault descriptors that have to be preserved between pre-dump iterations. It means criu continues supporting the soft-dirty method to avoid breakage for current users. The new method will be implemented as a separate feature. [avagin@google.com: update tools/include/uapi/linux/fs.h] Link: https://lkml.kernel.org/r/20231107164139.576046-1-avagin@google.com Link: https://lkml.kernel.org/r/20231106220959.296568-1-avagin@google.com Signed-off-by: Andrei Vagin <avagin@google.com> Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Detlev Casanova
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357547b876 |
doc: media: visl: Add AV1 support
Add AV1 information in visl documentation. Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Xu Yang
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9745295358 |
docs/perf: Add explanation for DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER quirk
Add explanation for DDR_CAP_AXI_ID_PORT_CHANNEL_FILTER quirk. Signed-off-by: Xu Yang <xu.yang_2@nxp.com> Link: https://lore.kernel.org/r/20231120093317.2652866-2-xu.yang_2@nxp.com Signed-off-by: Will Deacon <will@kernel.org> |
||
|
Josh Don
|
7b91eb6000 |
cgroup: Fix documentation for cpu.idle
Two problems: - cpu.idle cgroups show up with 0 weight, correct the documentation to indicate this. - cpu.idle has no entry describing it. Signed-off-by: Josh Don <joshdon@google.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Waiman Long
|
877c737db9 |
cgroup/cpuset: Expose cpuset.cpus.isolated
The root-only cpuset.cpus.isolated control file shows the current set of isolated CPUs in isolated partitions. This control file is currently exposed only with the cgroup_debug boot command line option which also adds the ".__DEBUG__." prefix. This is actually a useful control file if users want to find out which CPUs are currently in an isolated state by the cpuset controller. Remove CFTYPE_DEBUG flag for this control file and make it available by default without any prefix. The test_cpuset_prs.sh test script and the cgroup-v2.rst documentation file are also updated accordingly. Minor code change is also made in test_cpuset_prs.sh to avoid false test failure when running on debug kernel. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Tomas Mudrunka
|
39ff20f5fd |
/proc/sysrq-trigger: accept multiple keys at once
This way we can do: `echo _reisub > /proc/sysrq-trigger` Instead of: `for i in r e i s u b; do echo "$i" > /proc/sysrq-trigger; done;` This can be very useful when trying to execute sysrq combo remotely or from userspace. When sending keys in multiple separate writes, userspace (eg. bash or ssh) can be killed before whole combo is completed. Therefore putting all keys in single write is more robust approach. Signed-off-by: Tomas Mudrunka <tomas.mudrunka@gmail.com> Reviewed-by: Jiri Slaby <jirislaby@kernel.org> Link: https://lore.kernel.org/r/20231120111451.527952-1-tomas.mudrunka@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Manikanta Guntupalli
|
0be916a68c |
Documentation: devices.txt: Update ttyUL major number allocation details
Describe when uartlite driver uses static/dynamic allocation for major number based on maximum number of uartlite serial ports. Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com> Link: https://lore.kernel.org/r/20231116134003.3762725-2-manikanta.guntupalli@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Hardik Gajjar
|
5a1ccf0c72 |
usb: new quirk to reduce the SET_ADDRESS request timeout
This patch introduces a new USB quirk, USB_QUIRK_SHORT_SET_ADDRESS_REQ_TIMEOUT, which modifies the timeout value for the SET_ADDRESS request. The standard timeout for USB request/command is 5000 ms, as recommended in the USB 3.2 specification (section 9.2.6.1). However, certain scenarios, such as connecting devices through an APTIV hub, can lead to timeout errors when the device enumerates as full speed initially and later switches to high speed during chirp negotiation. In such cases, USB analyzer logs reveal that the bus suspends for 5 seconds due to incorrect chirp parsing and resumes only after two consecutive timeout errors trigger a hub driver reset. Packet(54) Dir(?) Full Speed J(997.100 us) Idle( 2.850 us) _______| Time Stamp(28 . 105 910 682) _______|_____________________________________________________________Ch0 Packet(55) Dir(?) Full Speed J(997.118 us) Idle( 2.850 us) _______| Time Stamp(28 . 106 910 632) _______|_____________________________________________________________Ch0 Packet(56) Dir(?) Full Speed J(399.650 us) Idle(222.582 us) _______| Time Stamp(28 . 107 910 600) _______|_____________________________________________________________Ch0 Packet(57) Dir Chirp J( 23.955 ms) Idle(115.169 ms) _______| Time Stamp(28 . 108 532 832) _______|_____________________________________________________________Ch0 Packet(58) Dir(?) Full Speed J (Suspend)( 5.347 sec) Idle( 5.366 us) _______| Time Stamp(28 . 247 657 600) _______|_____________________________________________________________Ch0 This 5-second delay in device enumeration is undesirable, particularly in automotive applications where quick enumeration is crucial (ideally within 3 seconds). The newly introduced quirks provide the flexibility to align with a 3-second time limit, as required in specific contexts like automotive applications. By reducing the SET_ADDRESS request timeout to 500 ms, the system can respond more swiftly to errors, initiate rapid recovery, and ensure efficient device enumeration. This change is vital for scenarios where rapid smartphone enumeration and screen projection are essential. To use the quirk, please write "vendor_id:product_id:p" to /sys/bus/usb/drivers/hub/module/parameter/quirks For example, echo "0x2c48:0x0132:p" > /sys/bus/usb/drivers/hub/module/parameters/quirks" Signed-off-by: Hardik Gajjar <hgajjar@de.adit-jv.com> Reviewed-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20231027152029.104363-2-hgajjar@de.adit-jv.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
||
|
Jonathan Corbet
|
d591aefc66 |
Merge branch 'vegard' into docs-mw
Vegard Nossum writes: This patch series replaces some instances of 'class:: toc-title' with toctree's :caption: attribute, see the last patch in the series for some more rationale/explanation. |
||
|
Vegard Nossum
|
a37a44572f |
media: admin-guide: properly format ToC heading
"class:: toc-title" was a workaround for older Sphinx versions that are no longer supported. The canonical way to add a heading to the ToC is to use :caption:. Do that. Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231027081830.195056-4-vegard.nossum@oracle.com |
||
|
Jack Zhu
|
f72f80550d |
media: admin-guide: Add starfive_camss.rst for Starfive Camera Subsystem
Add starfive_camss.rst file that documents the Starfive Camera Subsystem driver which is used for handing image sensor data. Signed-off-by: Jack Zhu <jack.zhu@starfivetech.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
||
|
Javier Martinez Canillas
|
c986968fe9
|
regulator: core: Add option to prevent disabling unused regulators
This may be useful for debugging and develompent purposes, when there are drivers that depend on regulators to be enabled but do not request them. It is inspired from the clk_ignore_unused and pd_ignore_unused parameters, that are used to keep firmware-enabled clocks and power domains on even if these are not used by drivers. The parameter is not expected to be used in normal cases and should not be needed on a platform with proper driver support. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Brian Masney <bmasney@redhat.com> Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Link: https://lore.kernel.org/r/20231107190926.1185326-1-javierm@redhat.com Signed-off-by: Mark Brown <broonie@kernel.org> |
||
|
Waiman Long
|
72c6303acf |
cgroup/cpuset: Take isolated CPUs out of workqueue unbound cpumask
To make CPUs in isolated cpuset partition closer in isolation to the boot time isolated CPUs specified in the "isolcpus" boot command line option, we need to take those CPUs out of the workqueue unbound cpumask so that work functions from the unbound workqueues won't run on those CPUs. Otherwise, they will interfere the user tasks running on those isolated CPUs. With the introduction of the workqueue_unbound_exclude_cpumask() helper function in an earlier commit, those isolated CPUs can now be taken out from the workqueue unbound cpumask. This patch also updates cgroup-v2.rst to mention that isolated CPUs will be excluded from unbound workqueue cpumask as well as updating test_cpuset_prs.sh to verify the correctness of the new *cpuset.cpus.isolated file, if available via cgroup_debug option. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
||
|
Linus Torvalds
|
4bbdb725a3 |
IOMMU Updates for Linux v6.7
Including:
- Core changes:
- Make default-domains mandatory for all IOMMU drivers
- Remove group refcounting
- Add generic_single_device_group() helper and consolidate
drivers
- Cleanup map/unmap ops
- Scaling improvements for the IOVA rcache depot
- Convert dart & iommufd to the new domain_alloc_paging()
- ARM-SMMU:
- Device-tree binding update:
- Add qcom,sm7150-smmu-v2 for Adreno on SM7150 SoC
- SMMUv2:
- Support for Qualcomm SDM670 (MDSS) and SM7150 SoCs
- SMMUv3:
- Large refactoring of the context descriptor code to
move the CD table into the master, paving the way
for '->set_dev_pasid()' support on non-SVA domains
- Minor cleanups to the SVA code
- Intel VT-d:
- Enable debugfs to dump domain attached to a pasid
- Remove an unnecessary inline function.
- AMD IOMMU:
- Initial patches for SVA support (not complete yet)
- S390 IOMMU:
- DMA-API conversion and optimized IOTLB flushing
- Some smaller fixes and improvements
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Merge tag 'iommu-updates-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
"Core changes:
- Make default-domains mandatory for all IOMMU drivers
- Remove group refcounting
- Add generic_single_device_group() helper and consolidate drivers
- Cleanup map/unmap ops
- Scaling improvements for the IOVA rcache depot
- Convert dart & iommufd to the new domain_alloc_paging()
ARM-SMMU:
- Device-tree binding update:
- Add qcom,sm7150-smmu-v2 for Adreno on SM7150 SoC
- SMMUv2:
- Support for Qualcomm SDM670 (MDSS) and SM7150 SoCs
- SMMUv3:
- Large refactoring of the context descriptor code to move the CD
table into the master, paving the way for '->set_dev_pasid()'
support on non-SVA domains
- Minor cleanups to the SVA code
Intel VT-d:
- Enable debugfs to dump domain attached to a pasid
- Remove an unnecessary inline function
AMD IOMMU:
- Initial patches for SVA support (not complete yet)
S390 IOMMU:
- DMA-API conversion and optimized IOTLB flushing
And some smaller fixes and improvements"
* tag 'iommu-updates-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (102 commits)
iommu/dart: Remove the force_bypass variable
iommu/dart: Call apple_dart_finalize_domain() as part of alloc_paging()
iommu/dart: Convert to domain_alloc_paging()
iommu/dart: Move the blocked domain support to a global static
iommu/dart: Use static global identity domains
iommufd: Convert to alloc_domain_paging()
iommu/vt-d: Use ops->blocked_domain
iommu/vt-d: Update the definition of the blocking domain
iommu: Move IOMMU_DOMAIN_BLOCKED global statics to ops->blocked_domain
Revert "iommu/vt-d: Remove unused function"
iommu/amd: Remove DMA_FQ type from domain allocation path
iommu: change iommu_map_sgtable to return signed values
iommu/virtio: Add __counted_by for struct viommu_request and use struct_size()
iommu/vt-d: debugfs: Support dumping a specified page table
iommu/vt-d: debugfs: Create/remove debugfs file per {device, pasid}
iommu/vt-d: debugfs: Dump entry pointing to huge page
iommu/vt-d: Remove unused function
iommu/arm-smmu-v3-sva: Remove bond refcount
iommu/arm-smmu-v3-sva: Remove unused iommu_sva handle
iommu/arm-smmu-v3: Rename cdcfg to cd_table
...
|
||
|
Linus Torvalds
|
6bc986ab83 |
NFS client updates for Linux 6.7
Highlights include:
Bugfixes:
- SUNRPC: A fix to re-probe the target RPC port after an ECONNRESET error
- SUNRPC: Handle allocation errors from rpcb_call_async()
- SUNRPC: Fix a use-after-free condition in rpc_pipefs
- SUNRPC: fix up various checks for timeouts
- NFSv4.1: Handle NFS4ERR_DELAY errors during session trunking
- NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
- NFSv4: Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter.
- nfs: Convert nfs_symlink() to use a folio
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Merge tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Bugfixes:
- SUNRPC:
- re-probe the target RPC port after an ECONNRESET error
- handle allocation errors from rpcb_call_async()
- fix a use-after-free condition in rpc_pipefs
- fix up various checks for timeouts
- NFSv4.1:
- Handle NFS4ERR_DELAY errors during session trunking
- fix SP4_MACH_CRED protection for pnfs IO
- NFSv4:
- Ensure that we test all delegations when the server notifies
us that it may have revoked some of them
Features:
- Allow knfsd processes to break out of NFS4ERR_DELAY loops when
re-exporting NFSv4.x by setting appropriate values for the
'delay_retrans' module parameter
- nfs: Convert nfs_symlink() to use a folio"
* tag 'nfs-for-6.7-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
nfs: Convert nfs_symlink() to use a folio
SUNRPC: Fix RPC client cleaned up the freed pipefs dentries
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
SUNRPC: Add an IS_ERR() check back to where it was
NFSv4.1: fix handling NFS4ERR_DELAY when testing for session trunking
nfs41: drop dependency between flexfiles layout driver and NFSv3 modules
NFSv4: fairly test all delegations on a SEQ4_ revocation
SUNRPC: SOFTCONN tasks should time out when on the sending list
SUNRPC: Force close the socket when a hard error is reported
SUNRPC: Don't skip timeout checks in call_connect_status()
SUNRPC: ECONNRESET might require a rebind
NFSv4/pnfs: Allow layoutget to return EAGAIN for softerr mounts
NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY
|
||
|
Linus Torvalds
|
be3ca57cfb |
media updates for v6.7-rc1
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||
|
Linus Torvalds
|
0a23fb262d |
Major microcode loader restructuring, cleanup and improvements by Thomas
Gleixner:
- Restructure the code needed for it and add a temporary initrd mapping
on 32-bit so that the loader can access the microcode blobs. This in
itself is a preparation for the next major improvement:
- Do not load microcode on 32-bit before paging has been enabled.
Handling this has caused an endless stream of headaches, issues, ugly
code and unnecessary hacks in the past. And there really wasn't any
sensible reason to do that in the first place. So switch the 32-bit
loading to happen after paging has been enabled and turn the loader
code "real purrty" again
- Drop mixed microcode steppings loading on Intel - there, a single patch
loaded on the whole system is sufficient
- Rework late loading to track which CPUs have updated microcode
successfully and which haven't, act accordingly
- Move late microcode loading on Intel in NMI context in order to
guarantee concurrent loading on all threads
- Make the late loading CPU-hotplug-safe and have the offlined threads
be woken up for the purpose of the update
- Add support for a minimum revision which determines whether late
microcode loading is safe on a machine and the microcode does not
change software visible features which the machine cannot use anyway
since feature detection has happened already. Roughly, the minimum
revision is the smallest revision number which must be loaded
currently on the system so that late updates can be allowed
- Other nice leanups, fixess, etc all over the place
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Merge tag 'x86_microcode_for_v6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode loading updates from Borislac Petkov:
"Major microcode loader restructuring, cleanup and improvements by
Thomas Gleixner:
- Restructure the code needed for it and add a temporary initrd
mapping on 32-bit so that the loader can access the microcode
blobs. This in itself is a preparation for the next major
improvement:
- Do not load microcode on 32-bit before paging has been enabled.
Handling this has caused an endless stream of headaches, issues,
ugly code and unnecessary hacks in the past. And there really
wasn't any sensible reason to do that in the first place. So switch
the 32-bit loading to happen after paging has been enabled and turn
the loader code "real purrty" again
- Drop mixed microcode steppings loading on Intel - there, a single
patch loaded on the whole system is sufficient
- Rework late loading to track which CPUs have updated microcode
successfully and which haven't, act accordingly
- Move late microcode loading on Intel in NMI context in order to
guarantee concurrent loading on all threads
- Make the late loading CPU-hotplug-safe and have the offlined
threads be woken up for the purpose of the update
- Add support for a minimum revision which determines whether late
microcode loading is safe on a machine and the microcode does not
change software visible features which the machine cannot use
anyway since feature detection has happened already. Roughly, the
minimum revision is the smallest revision number which must be
loaded currently on the system so that late updates can be allowed
- Other nice leanups, fixess, etc all over the place"
* tag 'x86_microcode_for_v6.7_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (40 commits)
x86/microcode/intel: Add a minimum required revision for late loading
x86/microcode: Prepare for minimal revision check
x86/microcode: Handle "offline" CPUs correctly
x86/apic: Provide apic_force_nmi_on_cpu()
x86/microcode: Protect against instrumentation
x86/microcode: Rendezvous and load in NMI
x86/microcode: Replace the all-in-one rendevous handler
x86/microcode: Provide new control functions
x86/microcode: Add per CPU control field
x86/microcode: Add per CPU result state
x86/microcode: Sanitize __wait_for_cpus()
x86/microcode: Clarify the late load logic
x86/microcode: Handle "nosmt" correctly
x86/microcode: Clean up mc_cpu_down_prep()
x86/microcode: Get rid of the schedule work indirection
x86/microcode: Mop up early loading leftovers
x86/microcode/amd: Use cached microcode for AP load
x86/microcode/amd: Cache builtin/initrd microcode early
x86/microcode/amd: Cache builtin microcode too
x86/microcode/amd: Use correct per CPU ucode_cpu_info
...
|
||
|
Linus Torvalds
|
ecae0bd517 |
Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Kemeng Shi has contributed some compation maintenance work in the
series "Fixes and cleanups to compaction".
- Joel Fernandes has a patchset ("Optimize mremap during mutual
alignment within PMD") which fixes an obscure issue with mremap()'s
pagetable handling during a subsequent exec(), based upon an
implementation which Linus suggested.
- More DAMON/DAMOS maintenance and feature work from SeongJae Park i the
following patch series:
mm/damon: misc fixups for documents, comments and its tracepoint
mm/damon: add a tracepoint for damos apply target regions
mm/damon: provide pseudo-moving sum based access rate
mm/damon: implement DAMOS apply intervals
mm/damon/core-test: Fix memory leaks in core-test
mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
- In the series "Do not try to access unaccepted memory" Adrian Hunter
provides some fixups for the recently-added "unaccepted memory' feature.
To increase the feature's checking coverage. "Plug a few gaps where
RAM is exposed without checking if it is unaccepted memory".
- In the series "cleanups for lockless slab shrink" Qi Zheng has done
some maintenance work which is preparation for the lockless slab
shrinking code.
- Qi Zheng has redone the earlier (and reverted) attempt to make slab
shrinking lockless in the series "use refcount+RCU method to implement
lockless slab shrink".
- David Hildenbrand contributes some maintenance work for the rmap code
in the series "Anon rmap cleanups".
- Kefeng Wang does more folio conversions and some maintenance work in
the migration code. Series "mm: migrate: more folio conversion and
unification".
- Matthew Wilcox has fixed an issue in the buffer_head code which was
causing long stalls under some heavy memory/IO loads. Some cleanups
were added on the way. Series "Add and use bdev_getblk()".
- In the series "Use nth_page() in place of direct struct page
manipulation" Zi Yan has fixed a potential issue with the direct
manipulation of hugetlb page frames.
- In the series "mm: hugetlb: Skip initialization of gigantic tail
struct pages if freed by HVO" has improved our handling of gigantic
pages in the hugetlb vmmemmep optimizaton code. This provides
significant boot time improvements when significant amounts of gigantic
pages are in use.
- Matthew Wilcox has sent the series "Small hugetlb cleanups" - code
rationalization and folio conversions in the hugetlb code.
- Yin Fengwei has improved mlock()'s handling of large folios in the
series "support large folio for mlock"
- In the series "Expose swapcache stat for memcg v1" Liu Shixin has
added statistics for memcg v1 users which are available (and useful)
under memcg v2.
- Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
prctl so that userspace may direct the kernel to not automatically
propagate the denial to child processes. The series is named "MDWE
without inheritance".
- Kefeng Wang has provided the series "mm: convert numa balancing
functions to use a folio" which does what it says.
- In the series "mm/ksm: add fork-exec support for prctl" Stefan Roesch
makes is possible for a process to propagate KSM treatment across
exec().
- Huang Ying has enhanced memory tiering's calculation of memory
distances. This is used to permit the dax/kmem driver to use "high
bandwidth memory" in addition to Optane Data Center Persistent Memory
Modules (DCPMM). The series is named "memory tiering: calculate
abstract distance based on ACPI HMAT"
- In the series "Smart scanning mode for KSM" Stefan Roesch has
optimized KSM by teaching it to retain and use some historical
information from previous scans.
- Yosry Ahmed has fixed some inconsistencies in memcg statistics in the
series "mm: memcg: fix tracking of pending stats updates values".
- In the series "Implement IOCTL to get and optionally clear info about
PTEs" Peter Xu has added an ioctl to /proc/<pid>/pagemap which permits
us to atomically read-then-clear page softdirty state. This is mainly
used by CRIU.
- Hugh Dickins contributed the series "shmem,tmpfs: general maintenance"
- a bunch of relatively minor maintenance tweaks to this code.
- Matthew Wilcox has increased the use of the VMA lock over file-backed
page faults in the series "Handle more faults under the VMA lock". Some
rationalizations of the fault path became possible as a result.
- In the series "mm/rmap: convert page_move_anon_rmap() to
folio_move_anon_rmap()" David Hildenbrand has implemented some cleanups
and folio conversions.
- In the series "various improvements to the GUP interface" Lorenzo
Stoakes has simplified and improved the GUP interface with an eye to
providing groundwork for future improvements.
- Andrey Konovalov has sent along the series "kasan: assorted fixes and
improvements" which does those things.
- Some page allocator maintenance work from Kemeng Shi in the series
"Two minor cleanups to break_down_buddy_pages".
- In thes series "New selftest for mm" Breno Leitao has developed
another MM self test which tickles a race we had between madvise() and
page faults.
- In the series "Add folio_end_read" Matthew Wilcox provides cleanups
and an optimization to the core pagecache code.
- Nhat Pham has added memcg accounting for hugetlb memory in the series
"hugetlb memcg accounting".
- Cleanups and rationalizations to the pagemap code from Lorenzo
Stoakes, in the series "Abstract vma_merge() and split_vma()".
- Audra Mitchell has fixed issues in the procfs page_owner code's new
timestamping feature which was causing some misbehaviours. In the
series "Fix page_owner's use of free timestamps".
- Lorenzo Stoakes has fixed the handling of new mappings of sealed files
in the series "permit write-sealed memfd read-only shared mappings".
- Mike Kravetz has optimized the hugetlb vmemmap optimization in the
series "Batch hugetlb vmemmap modification operations".
- Some buffer_head folio conversions and cleanups from Matthew Wilcox in
the series "Finish the create_empty_buffers() transition".
- As a page allocator performance optimization Huang Ying has added
automatic tuning to the allocator's per-cpu-pages feature, in the series
"mm: PCP high auto-tuning".
- Roman Gushchin has contributed the patchset "mm: improve performance
of accounted kernel memory allocations" which improves their performance
by ~30% as measured by a micro-benchmark.
- folio conversions from Kefeng Wang in the series "mm: convert page
cpupid functions to folios".
- Some kmemleak fixups in Liu Shixin's series "Some bugfix about
kmemleak".
- Qi Zheng has improved our handling of memoryless nodes by keeping them
off the allocation fallback list. This is done in the series "handle
memoryless nodes more appropriately".
- khugepaged conversions from Vishal Moola in the series "Some
khugepaged folio conversions".
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Merge tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
"Many singleton patches against the MM code. The patch series which are
included in this merge do the following:
- Kemeng Shi has contributed some compation maintenance work in the
series 'Fixes and cleanups to compaction'
- Joel Fernandes has a patchset ('Optimize mremap during mutual
alignment within PMD') which fixes an obscure issue with mremap()'s
pagetable handling during a subsequent exec(), based upon an
implementation which Linus suggested
- More DAMON/DAMOS maintenance and feature work from SeongJae Park i
the following patch series:
mm/damon: misc fixups for documents, comments and its tracepoint
mm/damon: add a tracepoint for damos apply target regions
mm/damon: provide pseudo-moving sum based access rate
mm/damon: implement DAMOS apply intervals
mm/damon/core-test: Fix memory leaks in core-test
mm/damon/sysfs-schemes: Do DAMOS tried regions update for only one apply interval
- In the series 'Do not try to access unaccepted memory' Adrian
Hunter provides some fixups for the recently-added 'unaccepted
memory' feature. To increase the feature's checking coverage. 'Plug
a few gaps where RAM is exposed without checking if it is
unaccepted memory'
- In the series 'cleanups for lockless slab shrink' Qi Zheng has done
some maintenance work which is preparation for the lockless slab
shrinking code
- Qi Zheng has redone the earlier (and reverted) attempt to make slab
shrinking lockless in the series 'use refcount+RCU method to
implement lockless slab shrink'
- David Hildenbrand contributes some maintenance work for the rmap
code in the series 'Anon rmap cleanups'
- Kefeng Wang does more folio conversions and some maintenance work
in the migration code. Series 'mm: migrate: more folio conversion
and unification'
- Matthew Wilcox has fixed an issue in the buffer_head code which was
causing long stalls under some heavy memory/IO loads. Some cleanups
were added on the way. Series 'Add and use bdev_getblk()'
- In the series 'Use nth_page() in place of direct struct page
manipulation' Zi Yan has fixed a potential issue with the direct
manipulation of hugetlb page frames
- In the series 'mm: hugetlb: Skip initialization of gigantic tail
struct pages if freed by HVO' has improved our handling of gigantic
pages in the hugetlb vmmemmep optimizaton code. This provides
significant boot time improvements when significant amounts of
gigantic pages are in use
- Matthew Wilcox has sent the series 'Small hugetlb cleanups' - code
rationalization and folio conversions in the hugetlb code
- Yin Fengwei has improved mlock()'s handling of large folios in the
series 'support large folio for mlock'
- In the series 'Expose swapcache stat for memcg v1' Liu Shixin has
added statistics for memcg v1 users which are available (and
useful) under memcg v2
- Florent Revest has enhanced the MDWE (Memory-Deny-Write-Executable)
prctl so that userspace may direct the kernel to not automatically
propagate the denial to child processes. The series is named 'MDWE
without inheritance'
- Kefeng Wang has provided the series 'mm: convert numa balancing
functions to use a folio' which does what it says
- In the series 'mm/ksm: add fork-exec support for prctl' Stefan
Roesch makes is possible for a process to propagate KSM treatment
across exec()
- Huang Ying has enhanced memory tiering's calculation of memory
distances. This is used to permit the dax/kmem driver to use 'high
bandwidth memory' in addition to Optane Data Center Persistent
Memory Modules (DCPMM). The series is named 'memory tiering:
calculate abstract distance based on ACPI HMAT'
- In the series 'Smart scanning mode for KSM' Stefan Roesch has
optimized KSM by teaching it to retain and use some historical
information from previous scans
- Yosry Ahmed has fixed some inconsistencies in memcg statistics in
the series 'mm: memcg: fix tracking of pending stats updates
values'
- In the series 'Implement IOCTL to get and optionally clear info
about PTEs' Peter Xu has added an ioctl to /proc/<pid>/pagemap
which permits us to atomically read-then-clear page softdirty
state. This is mainly used by CRIU
- Hugh Dickins contributed the series 'shmem,tmpfs: general
maintenance', a bunch of relatively minor maintenance tweaks to
this code
- Matthew Wilcox has increased the use of the VMA lock over
file-backed page faults in the series 'Handle more faults under the
VMA lock'. Some rationalizations of the fault path became possible
as a result
- In the series 'mm/rmap: convert page_move_anon_rmap() to
folio_move_anon_rmap()' David Hildenbrand has implemented some
cleanups and folio conversions
- In the series 'various improvements to the GUP interface' Lorenzo
Stoakes has simplified and improved the GUP interface with an eye
to providing groundwork for future improvements
- Andrey Konovalov has sent along the series 'kasan: assorted fixes
and improvements' which does those things
- Some page allocator maintenance work from Kemeng Shi in the series
'Two minor cleanups to break_down_buddy_pages'
- In thes series 'New selftest for mm' Breno Leitao has developed
another MM self test which tickles a race we had between madvise()
and page faults
- In the series 'Add folio_end_read' Matthew Wilcox provides cleanups
and an optimization to the core pagecache code
- Nhat Pham has added memcg accounting for hugetlb memory in the
series 'hugetlb memcg accounting'
- Cleanups and rationalizations to the pagemap code from Lorenzo
Stoakes, in the series 'Abstract vma_merge() and split_vma()'
- Audra Mitchell has fixed issues in the procfs page_owner code's new
timestamping feature which was causing some misbehaviours. In the
series 'Fix page_owner's use of free timestamps'
- Lorenzo Stoakes has fixed the handling of new mappings of sealed
files in the series 'permit write-sealed memfd read-only shared
mappings'
- Mike Kravetz has optimized the hugetlb vmemmap optimization in the
series 'Batch hugetlb vmemmap modification operations'
- Some buffer_head folio conversions and cleanups from Matthew Wilcox
in the series 'Finish the create_empty_buffers() transition'
- As a page allocator performance optimization Huang Ying has added
automatic tuning to the allocator's per-cpu-pages feature, in the
series 'mm: PCP high auto-tuning'
- Roman Gushchin has contributed the patchset 'mm: improve
performance of accounted kernel memory allocations' which improves
their performance by ~30% as measured by a micro-benchmark
- folio conversions from Kefeng Wang in the series 'mm: convert page
cpupid functions to folios'
- Some kmemleak fixups in Liu Shixin's series 'Some bugfix about
kmemleak'
- Qi Zheng has improved our handling of memoryless nodes by keeping
them off the allocation fallback list. This is done in the series
'handle memoryless nodes more appropriately'
- khugepaged conversions from Vishal Moola in the series 'Some
khugepaged folio conversions'"
[ bcachefs conflicts with the dynamically allocated shrinkers have been
resolved as per Stephen Rothwell in
https://lore.kernel.org/all/20230913093553.4290421e@canb.auug.org.au/
with help from Qi Zheng.
The clone3 test filtering conflict was half-arsed by yours truly ]
* tag 'mm-stable-2023-11-01-14-33' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (406 commits)
mm/damon/sysfs: update monitoring target regions for online input commit
mm/damon/sysfs: remove requested targets when online-commit inputs
selftests: add a sanity check for zswap
Documentation: maple_tree: fix word spelling error
mm/vmalloc: fix the unchecked dereference warning in vread_iter()
zswap: export compression failure stats
Documentation: ubsan: drop "the" from article title
mempolicy: migration attempt to match interleave nodes
mempolicy: mmap_lock is not needed while migrating folios
mempolicy: alloc_pages_mpol() for NUMA policy without vma
mm: add page_rmappable_folio() wrapper
mempolicy: remove confusing MPOL_MF_LAZY dead code
mempolicy: mpol_shared_policy_init() without pseudo-vma
mempolicy trivia: use pgoff_t in shared mempolicy tree
mempolicy trivia: slightly more consistent naming
mempolicy trivia: delete those ancient pr_debug()s
mempolicy: fix migrate_pages(2) syscall return nr_failed
kernfs: drop shared NUMA mempolicy hooks
hugetlbfs: drop shared NUMA mempolicy pretence
mm/damon/sysfs-test: add a unit test for damon_sysfs_set_targets()
...
|
||
|
Linus Torvalds
|
bc3012f4e3 |
This update includes the following changes:
API: - Add virtual-address based lskcipher interface. - Optimise ahash/shash performance in light of costly indirect calls. - Remove ahash alignmask attribute. Algorithms: - Improve AES/XTS performance of 6-way unrolling for ppc. - Remove some uses of obsolete algorithms (md4, md5, sha1). - Add FIPS 202 SHA-3 support in pkcs1pad. - Add fast path for single-page messages in adiantum. - Remove zlib-deflate. Drivers: - Add support for S4 in meson RNG driver. - Add STM32MP13x support in stm32. - Add hwrng interface support in qcom-rng. - Add support for deflate algorithm in hisilicon/zip. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmVB3vgACgkQxycdCkmx i6dsOBAAykbnX8BpnpnOXYywE9ZWrl98rAk51MK0N9olZNfg78zRPIv7fFxFdC20 SDJrDSNPmn0Qvaa5e0EfoAdklsm0k2GkXL/BwPKMKWUsyIoJVYI3WrBMnjBy9xMp yfME+h0bKoXJCZKnYkIUSGUejmUPSyRlEylrXoFlH/VWYwAaii/x9zwreQoF+0LR KI24A1q8AYs6Dw9HSfndaAub9GOzrqKYs6fSaMG+77Y4UC5aoi5J9Bp2G3uVyHay x/0bZtIxKXS9wn+LeG/3GspX23x/I5VwBOdAoMigrYmAIaIg5qgyMszudltTAs4R zF1Kh7WsnM5+vpnBSeigzo+/GGOU3QTz8y3tBTg+3ZR7GWGOwQLiizhOYqCyOfAH pIm6c++sZw/OOHiL69Nt4HeLKzGNYYWk3s4X/B/6cqoouPfOsfBaQobZNx9zfy7q ZNEvSVBjrFX/L6wDSotny1LTWLUNjHbmLaMV5uQZ/SQKEtv19fp2Dl7SsLkHH+3v ldOAwfoJR6QcSwz3Ez02TUAvQhtP172Hnxi7u44eiZu2aUboLhCFr7aEU6kVdBCx 1rIRVHD1oqlOEDRwPRXzhF3I8R4QDORJIxZ6UUhg7yueuI+XCGDsBNC+LqBrBmSR IbdjqmSDUBhJyM5yMnt1VFYhqKQ/ZzwZ3JQviwW76Es9pwEIolM= =IZmR -----END PGP SIGNATURE----- Merge tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Add virtual-address based lskcipher interface - Optimise ahash/shash performance in light of costly indirect calls - Remove ahash alignmask attribute Algorithms: - Improve AES/XTS performance of 6-way unrolling for ppc - Remove some uses of obsolete algorithms (md4, md5, sha1) - Add FIPS 202 SHA-3 support in pkcs1pad - Add fast path for single-page messages in adiantum - Remove zlib-deflate Drivers: - Add support for S4 in meson RNG driver - Add STM32MP13x support in stm32 - Add hwrng interface support in qcom-rng - Add support for deflate algorithm in hisilicon/zip" * tag 'v6.7-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (283 commits) crypto: adiantum - flush destination page before unmapping crypto: testmgr - move pkcs1pad(rsa,sha3-*) to correct place Documentation/module-signing.txt: bring up to date module: enable automatic module signing with FIPS 202 SHA-3 crypto: asymmetric_keys - allow FIPS 202 SHA-3 signatures crypto: rsa-pkcs1pad - Add FIPS 202 SHA-3 support crypto: FIPS 202 SHA-3 register in hash info for IMA x509: Add OIDs for FIPS 202 SHA-3 hash and signatures crypto: ahash - optimize performance when wrapping shash crypto: ahash - check for shash type instead of not ahash type crypto: hash - move "ahash wrapping shash" functions to ahash.c crypto: talitos - stop using crypto_ahash::init crypto: chelsio - stop using crypto_ahash::init crypto: ahash - improve file comment crypto: ahash - remove struct ahash_request_priv crypto: ahash - remove crypto_ahash_alignmask crypto: gcm - stop using alignmask of ahash crypto: chacha20poly1305 - stop using alignmask of ahash crypto: ccm - stop using alignmask of ahash net: ipv6: stop checking crypto_ahash_alignmask ... |
||
|
Linus Torvalds
|
5be9911406 |
sh updates for v6.7
- locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
- Documentation: kernel-parameters: Add earlyprintk=bios on SH
- sh: bios: Revive earlyprintk support
- sh: machvec: Remove custom ioport_{un,}map()
- sh: Remove superhyway bus support
- sh: Remove unused SH4-202 support
- sh: Remove stale microdev board
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Merge tag 'sh-for-v6.7-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh updates from John Paul Adrian Glaubitz:
"While the previously announced patch series for converting arch/sh to
device trees is not yet ready for inclusion to mainline and therefore
didn't make it for this pull request, there are still a small number
changes for v6.7 which include one platform (board plus CPU and driver
code) removal plus two fixes.
The removal sent in by Arnd Bergmann concerns the microdev board which
was an early SuperH prototype board that was never used in production.
With the board removed, we were able to drop the now unused code for
the SH4-202 CPU and well as the driver code for the superhyway bus and
a custom implementation for ioport_map() and ioport_unmap() which will
allow us to simplify ioport handling in the future.
Another patch set by Geert Uytterhoeven revives SuperH BIOS
earlyprintk support which got accidentally disabled in
|
||
|
Linus Torvalds
|
babe393974 |
The number of commits for documentation is not huge this time around, but
there are some significant changes nonetheless:
- Some more Spanish-language and Chinese translations.
- The much-discussed documentation of the confidential-computing threat
model.
- Powerpc and RISCV documentation move under Documentation/arch - these
complete this particular bit of documentation churn.
- A large traditional-Chinese documentation update.
- A new document on backporting and conflict resolution.
- Some kernel-doc and Sphinx fixes.
Plus the usual smattering of smaller updates and typo fixes.
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Merge tag 'docs-6.7' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"The number of commits for documentation is not huge this time around,
but there are some significant changes nonetheless:
- Some more Spanish-language and Chinese translations
- The much-discussed documentation of the confidential-computing
threat model
- Powerpc and RISCV documentation move under Documentation/arch -
these complete this particular bit of documentation churn
- A large traditional-Chinese documentation update
- A new document on backporting and conflict resolution
- Some kernel-doc and Sphinx fixes
Plus the usual smattering of smaller updates and typo fixes"
* tag 'docs-6.7' of git://git.lwn.net/linux: (40 commits)
scripts/kernel-doc: Fix the regex for matching -Werror flag
docs: backporting: address feedback
Documentation: driver-api: pps: Update PPS generator documentation
speakup: Document USB support
doc: blk-ioprio: Bring the doc in line with the implementation
docs: usb: fix reference to nonexistent file in UVC Gadget
docs: doc-guide: mention 'make refcheckdocs'
Documentation: fix typo in dynamic-debug howto
scripts/kernel-doc: match -Werror flag strictly
Documentation/sphinx: Remove the repeated word "the" in comments.
docs: sparse: add SPDX-License-Identifier
docs/zh_CN: Add subsystem-apis Chinese translation
docs/zh_TW: update contents for zh_TW
docs: submitting-patches: encourage direct notifications to commenters
docs: add backporting and conflict resolution document
docs: move riscv under arch
docs: update link to powerpc/vmemmap_dedup.rst
mm/memory-hotplug: fix typo in documentation
docs: move powerpc under arch
PCI: Update the devres documentation regarding to pcim_*()
...
|
||
|
Linus Torvalds
|
1e0c505e13 |
asm-generic updates for v6.7
The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEiK/NIGsWEZVxh/FrYKtH/8kJUicFAmVC40IACgkQYKtH/8kJ Uidhmw/9EX+aWSXGoObJ3fngaNSMw+PmrEuP8qEKBHxfKHcCdX3hc451Oh4GlhaQ tru91pPwgNvN2/rfoKusxT+V4PemGIzfNni/04rp+P0kvmdw5otQ2yNhsQNsfVmq XGWvkxF4P2GO6bkjjfR/1dDq7GtlyXtwwPDKeLbYb6TnJOZjtx+EAN27kkfSn1Ms R4Sa3zJ+DfHUmHL5S9g+7UD/CZ5GfKNmIskI4Mz5GsfoUz/0iiU+Bge/9sdcdSJQ kmbLy5YnVzfooLZ3TQmBFsO3iAMWb0s/mDdtyhqhTVmTUshLolkPYyKnPFvdupyv shXcpEST2XJNeaDRnL2K4zSCdxdbnCZHDpjfl9wfioBg7I8NfhXKpf1jYZHH1de4 LXq8ndEFEOVQw/zSpYWfQq1sux8Jiqr+UK/ukbVeFWiGGIUs91gEWtPAf8T0AZo9 ujkJvaWGl98O1g5wmBu0/dAR6QcFJMDfVwbmlIFpU8O+MEaz6X8mM+O5/T0IyTcD eMbAUjj4uYcU7ihKzHEv/0SS9Of38kzff67CLN5k8wOP/9NlaGZ78o1bVle9b52A BdhrsAefFiWHp1jT6Y9Rg4HOO/TguQ9e6EWSKOYFulsiLH9LEFaB9RwZLeLytV0W vlAgY9rUW77g1OJcb7DoNv33nRFuxsKqsnz3DEIXtgozo9CzbYI= =H1vH -----END PGP SIGNATURE----- Merge tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull ia64 removal and asm-generic updates from Arnd Bergmann: - The ia64 architecture gets its well-earned retirement as planned, now that there is one last (mostly) working release that will be maintained as an LTS kernel. - The architecture specific system call tables are updated for the added map_shadow_stack() syscall and to remove references to the long-gone sys_lookup_dcookie() syscall. * tag 'asm-generic-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: hexagon: Remove unusable symbols from the ptrace.h uapi asm-generic: Fix spelling of architecture arch: Reserve map_shadow_stack() syscall number for all architectures syscalls: Cleanup references to sys_lookup_dcookie() Documentation: Drop or replace remaining mentions of IA64 lib/raid6: Drop IA64 support Documentation: Drop IA64 from feature descriptions kernel: Drop IA64 support from sig_fault handlers arch: Remove Itanium (IA-64) architecture |
||
|
Linus Torvalds
|
56ec8e4cd8 |
arm64 updates for 6.7:
* Major refactoring of the CPU capability detection logic resulting in
the removal of the cpus_have_const_cap() function and migrating the
code to "alternative" branches where possible
* Backtrace/kgdb: use IPIs and pseudo-NMI
* Perf and PMU:
- Add support for Ampere SoC PMUs
- Multi-DTC improvements for larger CMN configurations with multiple
Debug & Trace Controllers
- Rework the Arm CoreSight PMU driver to allow separate registration of
vendor backend modules
- Fixes: add missing MODULE_DEVICE_TABLE to the amlogic perf
driver; use device_get_match_data() in the xgene driver; fix NULL
pointer dereference in the hisi driver caused by calling
cpuhp_state_remove_instance(); use-after-free in the hisi driver
* HWCAP updates:
- FEAT_SVE_B16B16 (BFloat16)
- FEAT_LRCPC3 (release consistency model)
- FEAT_LSE128 (128-bit atomic instructions)
* SVE: remove a couple of pseudo registers from the cpufeature code.
There is logic in place already to detect mismatched SVE features
* Miscellaneous:
- Reduce the default swiotlb size (currently 64MB) if no ZONE_DMA
bouncing is needed. The buffer is still required for small kmalloc()
buffers
- Fix module PLT counting with !RANDOMIZE_BASE
- Restrict CPU_BIG_ENDIAN to LLVM IAS 15.x or newer move
synchronisation code out of the set_ptes() loop
- More compact cpufeature displaying enabled cores
- Kselftest updates for the new CPU features
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"No major architecture features this time around, just some new HWCAP
definitions, support for the Ampere SoC PMUs and a few fixes/cleanups.
The bulk of the changes is reworking of the CPU capability checking
code (cpus_have_cap() etc).
- Major refactoring of the CPU capability detection logic resulting
in the removal of the cpus_have_const_cap() function and migrating
the code to "alternative" branches where possible
- Backtrace/kgdb: use IPIs and pseudo-NMI
- Perf and PMU:
- Add support for Ampere SoC PMUs
- Multi-DTC improvements for larger CMN configurations with
multiple Debug & Trace Controllers
- Rework the Arm CoreSight PMU driver to allow separate
registration of vendor backend modules
- Fixes: add missing MODULE_DEVICE_TABLE to the amlogic perf
driver; use device_get_match_data() in the xgene driver; fix
NULL pointer dereference in the hisi driver caused by calling
cpuhp_state_remove_instance(); use-after-free in the hisi driver
- HWCAP updates:
- FEAT_SVE_B16B16 (BFloat16)
- FEAT_LRCPC3 (release consistency model)
- FEAT_LSE128 (128-bit atomic instructions)
- SVE: remove a couple of pseudo registers from the cpufeature code.
There is logic in place already to detect mismatched SVE features
- Miscellaneous:
- Reduce the default swiotlb size (currently 64MB) if no ZONE_DMA
bouncing is needed. The buffer is still required for small
kmalloc() buffers
- Fix module PLT counting with !RANDOMIZE_BASE
- Restrict CPU_BIG_ENDIAN to LLVM IAS 15.x or newer move
synchronisation code out of the set_ptes() loop
- More compact cpufeature displaying enabled cores
- Kselftest updates for the new CPU features"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (83 commits)
arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer
arm64: module: Fix PLT counting when CONFIG_RANDOMIZE_BASE=n
arm64, irqchip/gic-v3, ACPI: Move MADT GICC enabled check into a helper
perf: hisi: Fix use-after-free when register pmu fails
drivers/perf: hisi_pcie: Initialize event->cpu only on success
drivers/perf: hisi_pcie: Check the type first in pmu::event_init()
arm64: cpufeature: Change DBM to display enabled cores
arm64: cpufeature: Display the set of cores with a feature
perf/arm-cmn: Enable per-DTC counter allocation
perf/arm-cmn: Rework DTC counters (again)
perf/arm-cmn: Fix DTC domain detection
drivers: perf: arm_pmuv3: Drop some unused arguments from armv8_pmu_init()
drivers: perf: arm_pmuv3: Read PMMIR_EL1 unconditionally
drivers/perf: hisi: use cpuhp_state_remove_instance_nocalls() for hisi_hns3_pmu uninit process
clocksource/drivers/arm_arch_timer: limit XGene-1 workaround
arm64: Remove system_uses_lse_atomics()
arm64: Mark the 'addr' argument to set_ptes() and __set_pte_at() as unused
drivers/perf: xgene: Use device_get_match_data()
perf/amlogic: add missing MODULE_DEVICE_TABLE
arm64/mm: Hoist synchronization out of set_ptes() loop
...
|
||
|
Linus Torvalds
|
59fff63cc2 |
platform-drivers-x86 for v6.7-1
Highlights: - asus-wmi: Support for screenpad and solve brightness key press duplication - int3472: Eliminate the last use of deprecated GPIO functions - mlxbf-pmc: New HW support - msi-ec: Support new EC configurations - thinkpad_acpi: Support reading aux MAC address during passthrough - wmi: Fixes & improvements - x86-android-tablets: Detection fix and avoid use of GPIO private APIs - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements The following is an automated shortlog grouped by driver: acer-wmi: - Remove void function return amd/hsmp: - add support for metrics tbl - create plat specific struct - Fix iomem handling - improve the error log amd/pmc: - Add dump_custom_stb module parameter - Add PMFW command id to support S2D force flush - Handle overflow cases where the num_samples range is higher - Use flex array when calling amd_pmc_stb_debugfs_open_v2() asus-wireless: - Replace open coded acpi_match_acpi_device() asus-wmi: - add support for ASUS screenpad - Do not report brightness up/down keys when also reported by acpi_video gpiolib: acpi: - Add a ignore interrupt quirk for Peaq C1010 - Check if a GPIO is listed in ignore_interrupt earlier hp-bioscfg: - Annotate struct bios_args with __counted_by inspur-platform-profile: - Add platform profile support int3472: - Add new skl_int3472_fill_gpiod_lookup() helper - Add new skl_int3472_gpiod_get_from_temp_lookup() helper - Stop using gpiod_toggle_active_low() - Switch to devm_get_gpiod() intel: bytcrc_pwrsrc: - Convert to platform remove callback returning void intel/ifs: - Add new CPU support - Add new error code - ARRAY BIST for Sierra Forest - Gen2 scan image loading - Gen2 Scan test support - Metadata validation for start_chunk - Refactor image loading code - Store IFS generation number - Validate image size intel_speed_select_if: - Remove hardcoded map size - Use devm_ioremap_resource intel/tpmi: - Add debugfs support for read/write blocked - Add defines to get version information intel-uncore-freq: - Ignore minor version change ISST: - Allow level 0 to be not present - Ignore minor version change - Use fuse enabled mask instead of allowed levels mellanox: - Fix misspelling error in routine name - Rename some init()/exit() functions for consistent naming mlxbf-bootctl: - Convert to platform remove callback returning void mlxbf-pmc: - Add support for BlueField-3 mlxbf-tmfifo: - Convert to platform remove callback returning void mlx-Convert to platform remove callback returning void: - mlx-Convert to platform remove callback returning void mlxreg-hotplug: - Convert to platform remove callback returning void mlxreg-io: - Convert to platform remove callback returning void mlxreg-lc: - Convert to platform remove callback returning void msi-ec: - Add more EC configs - rename fn_super_swap nvsw-sn2201: - Convert to platform remove callback returning void sel3350-Convert to platform remove callback returning void: - sel3350-Convert to platform remove callback returning void siemens: simatic-ipc-batt-apollolake: - Convert to platform remove callback returning void siemens: simatic-ipc-batt: - Convert to platform remove callback returning void siemens: simatic-ipc-batt-elkhartlake: - Convert to platform remove callback returning void siemens: simatic-ipc-batt-f7188x: - Convert to platform remove callback returning void siemens: simatic-ipc-batt: - Simplify simatic_ipc_batt_remove() surface: acpi-notify: - Convert to platform remove callback returning void surface: aggregator: - Annotate struct ssam_event with __counted_by surface: aggregator-cdev: - Convert to platform remove callback returning void surface: aggregator-registry: - Convert to platform remove callback returning void surface: dtx: - Convert to platform remove callback returning void surface: gpe: - Convert to platform remove callback returning void surface: hotplug: - Convert to platform remove callback returning void surface: surface3-wmi: - Convert to platform remove callback returning void think-lmi: - Add bulk save feature - Replace kstrdup() + strreplace() with kstrdup_and_replace() - Use strreplace() to replace a character by nul thinkpad_acpi: - Add battery quirk for Thinkpad X120e - replace deprecated strncpy with memcpy - sysfs interface to auxmac tools/power/x86/intel-speed-select: - Display error for core-power support - Increase max CPUs in one request - No TRL for non compute domains - Sanitize integer arguments - turbo-mode enable disable swapped - Update help for TRL - Use cgroup isolate for CPU 0 - v1.18 release wmi: - Decouple probe deferring from wmi_block_list - Decouple WMI device removal from wmi_block_list - Fix opening of char device - Fix probe failure when failing to register WMI devices - Fix refcounting of WMI devices in legacy functions x86-android-tablets: - Add a comment about x86_android_tablet_get_gpiod() - Create a platform_device from module_init() - Drop "linux,power-supply-name" from lenovo_yt3_bq25892_0_props[] - Fix Lenovo Yoga Tablet 2 830F/L vs 1050F/L detection - Remove invalid_aei_gpiochip from Peaq C1010 - Remove invalid_aei_gpiochip support - Stop using gpiolib private APIs - Use platform-device as gpio-keys parent xo15-ebook: - Replace open coded acpi_match_acpi_device() Merges: - Merge branch 'pdx86/platform-drivers-x86-int3472' into review-ilpo - Merge branch 'pdx86/platform-drivers-x86-mellanox-init' into review-ilpo - Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-ilpo - Merge remote-tracking branch 'pdx86/platform-drivers-x86-android-tablets' into review-hans -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCZT+lBwAKCRBZrE9hU+XO Mck0AQCFU7dYLCF4d1CXtHf1eZhSXLpYdhcO+C08JGGoM+MqSgD+Jyb9KJHk4pxE FvKG51I9neyAne9lvNrLodHRzxCYgAo= =duM8 -----END PGP SIGNATURE----- Merge tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86 Pull x86 platform driver updates from Ilpo Järvinen: - asus-wmi: Support for screenpad and solve brightness key press duplication - int3472: Eliminate the last use of deprecated GPIO functions - mlxbf-pmc: New HW support - msi-ec: Support new EC configurations - thinkpad_acpi: Support reading aux MAC address during passthrough - wmi: Fixes & improvements - x86-android-tablets: Detection fix and avoid use of GPIO private APIs - Debug & metrics interface improvements - Miscellaneous cleanups / fixes / improvements * tag 'platform-drivers-x86-v6.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (80 commits) platform/x86: inspur-platform-profile: Add platform profile support platform/x86: thinkpad_acpi: Add battery quirk for Thinkpad X120e platform/x86: wmi: Decouple WMI device removal from wmi_block_list platform/x86: wmi: Fix opening of char device platform/x86: wmi: Fix probe failure when failing to register WMI devices platform/x86: wmi: Fix refcounting of WMI devices in legacy functions platform/x86: wmi: Decouple probe deferring from wmi_block_list platform/x86/amd/hsmp: Fix iomem handling platform/x86: asus-wmi: Do not report brightness up/down keys when also reported by acpi_video platform/x86: thinkpad_acpi: replace deprecated strncpy with memcpy tools/power/x86/intel-speed-select: v1.18 release tools/power/x86/intel-speed-select: Use cgroup isolate for CPU 0 tools/power/x86/intel-speed-select: Increase max CPUs in one request tools/power/x86/intel-speed-select: Display error for core-power support tools/power/x86/intel-speed-select: No TRL for non compute domains tools/power/x86/intel-speed-select: turbo-mode enable disable swapped tools/power/x86/intel-speed-select: Update help for TRL tools/power/x86/intel-speed-select: Sanitize integer arguments platform/x86: acer-wmi: Remove void function return platform/x86/amd/pmc: Add dump_custom_stb module parameter ... |
||
|
Linus Torvalds
|
89ed67ef12 |
Networking changes for 6.7.
Core & protocols
----------------
- Support usec resolution of TCP timestamps, enabled selectively by
a route attribute.
- Defer regular TCP ACK while processing socket backlog, try to send
a cumulative ACK at the end. Increase single TCP flow performance
on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
- The Fair Queuing (FQ) packet scheduler:
- add built-in 3 band prio / WRR scheduling
- support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
- improve inactive flow reporting
- optimize the layout of structures for better cache locality
- Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
replacement for the old MD5 option.
- Add more retransmission timeout (RTO) related statistics to TCP_INFO.
- Support sending fragmented skbs over vsock sockets.
- Make sure we send SIGPIPE for vsock sockets if socket was shutdown().
- Add sysctl for ignoring lower limit on lifetime in Router
Advertisement PIO, based on an in-progress IETF draft.
- Add sysctl to control activation of TCP ping-pong mode.
- Add sysctl to make connection timeout in MPTCP configurable.
- Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
limit the number of wakeups.
- Support netlink GET for MDB (multicast forwarding), allowing user
space to request a single MDB entry instead of dumping the entire
table.
- Support selective FDB flushing in the VXLAN tunnel driver.
- Allow limiting learned FDB entries in bridges, prevent OOM attacks.
- Allow controlling via configfs netconsole targets which were created
via the kernel cmdline at boot, rather than via configfs at runtime.
- Support multiple PTP timestamp event queue readers with different
filters.
- MCTP over I3C.
BPF
---
- Add new veth-like netdevice where BPF program defines the logic
of the xmit routine. It can operate in L3 and L2 mode.
- Support exceptions - allow asserting conditions which should
never be true but are hard for the verifier to infer.
With some extra flexibility around handling of the exit / failure.
https://lwn.net/Articles/938435/
- Add support for local per-cpu kptr, allow allocating and storing
per-cpu objects in maps. Access to those objects operates on
the value for the current CPU. This allows to deprecate local
one-off implementations of per-CPU storage like
BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
- Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
for systemd to re-implement the LogNamespace feature which allows
running multiple instances of systemd-journald to process the logs
of different services.
- Enable open-coded task_vma iteration, after maple tree conversion
made it hard to directly walk VMAs in tracing programs.
- Add open-coded task, css_task and css iterator support.
One of the use cases is customizable OOM victim selection via BPF.
- Allow source address selection with bpf_*_fib_lookup().
- Add ability to pin BPF timer to the current CPU.
- Prevent creation of infinite loops by combining tail calls and
fentry/fexit programs.
- Add missed stats for kprobes to retrieve the number of missed kprobe
executions and subsequent executions of BPF programs.
- Inherit system settings for CPU security mitigations.
- Add BPF v4 CPU instruction support for arm32 and s390x.
Changes to common code
----------------------
- overflow: add DEFINE_FLEX() for on-stack definition of structs
with flexible array members.
- Process doc update with more guidance for reviewers.
Driver API
----------
- Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
mutex in most places and remove a lot of smaller locks.
- Create a common DPLL configuration API. Allow configuring
and querying state of PLL circuits used for clock syntonization,
in network time distribution.
- Unify fragmented and full page allocation APIs in page pool code.
Let drivers be ignorant of PAGE_SIZE.
- Rework PHY state machine to avoid races with calls to phy_stop().
- Notify DSA drivers of MAC address changes on user ports, improve
correctness of offloads which depend on matching port MAC addresses.
- Allow antenna control on injected WiFi frames.
- Reduce the number of variants of napi_schedule().
- Simplify error handling when composing devlink health messages.
Misc
----
- A lot of KCSAN data race "fixes", from Eric.
- A lot of __counted_by() annotations, from Kees.
- A lot of strncpy -> strscpy and printf format fixes.
- Replace master/slave terminology with conduit/user in DSA drivers.
- Handful of KUnit tests for netdev and WiFi core.
Removed
-------
- AppleTalk COPS.
- AppleTalk ipddp.
- TI AR7 CPMAC Ethernet driver.
Drivers
-------
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- add a driver for the Intel E2000 IPUs
- make CRC/FCS stripping configurable
- cross-timestamping for E823 devices
- basic support for E830 devices
- use aux-bus for managing client drivers
- i40e: report firmware versions via devlink
- nVidia/Mellanox:
- support 4-port NICs
- increase max number of channels to 256
- optimize / parallelize SF creation flow
- Broadcom (bnxt):
- enhance NIC temperature reporting
- support PAM4 speeds and lane configuration
- Marvell OcteonTX2:
- PTP pulse-per-second output support
- enable hardware timestamping for VFs
- Solarflare/AMD:
- conntrack NAT offload and offload for tunnels
- Wangxun (ngbe/txgbe):
- expose HW statistics
- Pensando/AMD:
- support PCI level reset
- narrow down the condition under which skbs are linearized
- Netronome/Corigine (nfp):
- support CHACHA20-POLY1305 crypto in IPsec offload
- Ethernet NICs embedded, slower, virtual:
- Synopsys (stmmac):
- add Loongson-1 SoC support
- enable use of HW queues with no offload capabilities
- enable PPS input support on all 5 channels
- increase TX coalesce timer to 5ms
- RealTek USB (r8152): improve efficiency of Rx by using GRO frags
- xen: support SW packet timestamping
- add drivers for implementations based on TI's PRUSS (AM64x EVM)
- nVidia/Mellanox Ethernet datacenter switches:
- avoid poor HW resource use on Spectrum-4 by better block selection
for IPv6 multicast forwarding and ordering of blocks in ACL region
- Ethernet embedded switches:
- Microchip:
- support configuring the drive strength for EMI compliance
- ksz9477: partial ACL support
- ksz9477: HSR offload
- ksz9477: Wake on LAN
- Realtek:
- rtl8366rb: respect device tree config of the CPU port
- Ethernet PHYs:
- support Broadcom BCM5221 PHYs
- TI dp83867: support hardware LED blinking
- CAN:
- add support for Linux-PHY based CAN transceivers
- at91_can: clean up and use rx-offload helpers
- WiFi:
- MediaTek (mt76):
- new sub-driver for mt7925 USB/PCIe devices
- HW wireless <> Ethernet bridging in MT7988 chips
- mt7603/mt7628 stability improvements
- Qualcomm (ath12k):
- WCN7850:
- enable 320 MHz channels in 6 GHz band
- hardware rfkill support
- enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS
to make scan faster
- read board data variant name from SMBIOS
- QCN9274: mesh support
- RealTek (rtw89):
- TDMA-based multi-channel concurrency (MCC)
- Silicon Labs (wfx):
- Remain-On-Channel (ROC) support
- Bluetooth:
- ISO: many improvements for broadcast support
- mark BCM4378/BCM4387 as BROKEN_LE_CODED
- add support for QCA2066
- btmtksdio: enable Bluetooth wakeup from suspend
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"Core & protocols:
- Support usec resolution of TCP timestamps, enabled selectively by a
route attribute.
- Defer regular TCP ACK while processing socket backlog, try to send
a cumulative ACK at the end. Increase single TCP flow performance
on a 200Gbit NIC by 20% (100Gbit -> 120Gbit).
- The Fair Queuing (FQ) packet scheduler:
- add built-in 3 band prio / WRR scheduling
- support bypass if the qdisc is mostly idle (5% speed up for TCP RR)
- improve inactive flow reporting
- optimize the layout of structures for better cache locality
- Support TCP Authentication Option (RFC 5925, TCP-AO), a more modern
replacement for the old MD5 option.
- Add more retransmission timeout (RTO) related statistics to
TCP_INFO.
- Support sending fragmented skbs over vsock sockets.
- Make sure we send SIGPIPE for vsock sockets if socket was
shutdown().
- Add sysctl for ignoring lower limit on lifetime in Router
Advertisement PIO, based on an in-progress IETF draft.
- Add sysctl to control activation of TCP ping-pong mode.
- Add sysctl to make connection timeout in MPTCP configurable.
- Support rcvlowat and notsent_lowat on MPTCP sockets, to help apps
limit the number of wakeups.
- Support netlink GET for MDB (multicast forwarding), allowing user
space to request a single MDB entry instead of dumping the entire
table.
- Support selective FDB flushing in the VXLAN tunnel driver.
- Allow limiting learned FDB entries in bridges, prevent OOM attacks.
- Allow controlling via configfs netconsole targets which were
created via the kernel cmdline at boot, rather than via configfs at
runtime.
- Support multiple PTP timestamp event queue readers with different
filters.
- MCTP over I3C.
BPF:
- Add new veth-like netdevice where BPF program defines the logic of
the xmit routine. It can operate in L3 and L2 mode.
- Support exceptions - allow asserting conditions which should never
be true but are hard for the verifier to infer. With some extra
flexibility around handling of the exit / failure:
https://lwn.net/Articles/938435/
- Add support for local per-cpu kptr, allow allocating and storing
per-cpu objects in maps. Access to those objects operates on the
value for the current CPU.
This allows to deprecate local one-off implementations of per-CPU
storage like BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE maps.
- Extend cgroup BPF sockaddr hooks for UNIX sockets. The use case is
for systemd to re-implement the LogNamespace feature which allows
running multiple instances of systemd-journald to process the logs
of different services.
- Enable open-coded task_vma iteration, after maple tree conversion
made it hard to directly walk VMAs in tracing programs.
- Add open-coded task, css_task and css iterator support. One of the
use cases is customizable OOM victim selection via BPF.
- Allow source address selection with bpf_*_fib_lookup().
- Add ability to pin BPF timer to the current CPU.
- Prevent creation of infinite loops by combining tail calls and
fentry/fexit programs.
- Add missed stats for kprobes to retrieve the number of missed
kprobe executions and subsequent executions of BPF programs.
- Inherit system settings for CPU security mitigations.
- Add BPF v4 CPU instruction support for arm32 and s390x.
Changes to common code:
- overflow: add DEFINE_FLEX() for on-stack definition of structs with
flexible array members.
- Process doc update with more guidance for reviewers.
Driver API:
- Simplify locking in WiFi (cfg80211 and mac80211 layers), use wiphy
mutex in most places and remove a lot of smaller locks.
- Create a common DPLL configuration API. Allow configuring and
querying state of PLL circuits used for clock syntonization, in
network time distribution.
- Unify fragmented and full page allocation APIs in page pool code.
Let drivers be ignorant of PAGE_SIZE.
- Rework PHY state machine to avoid races with calls to phy_stop().
- Notify DSA drivers of MAC address changes on user ports, improve
correctness of offloads which depend on matching port MAC
addresses.
- Allow antenna control on injected WiFi frames.
- Reduce the number of variants of napi_schedule().
- Simplify error handling when composing devlink health messages.
Misc:
- A lot of KCSAN data race "fixes", from Eric.
- A lot of __counted_by() annotations, from Kees.
- A lot of strncpy -> strscpy and printf format fixes.
- Replace master/slave terminology with conduit/user in DSA drivers.
- Handful of KUnit tests for netdev and WiFi core.
Removed:
- AppleTalk COPS.
- AppleTalk ipddp.
- TI AR7 CPMAC Ethernet driver.
Drivers:
- Ethernet high-speed NICs:
- Intel (100G, ice, idpf):
- add a driver for the Intel E2000 IPUs
- make CRC/FCS stripping configurable
- cross-timestamping for E823 devices
- basic support for E830 devices
- use aux-bus for managing client drivers
- i40e: report firmware versions via devlink
- nVidia/Mellanox:
- support 4-port NICs
- increase max number of channels to 256
- optimize / parallelize SF creation flow
- Broadcom (bnxt):
- enhance NIC temperature reporting
- support PAM4 speeds and lane configuration
- Marvell OcteonTX2:
- PTP pulse-per-second output support
- enable hardware timestamping for VFs
- Solarflare/AMD:
- conntrack NAT offload and offload for tunnels
- Wangxun (ngbe/txgbe):
- expose HW statistics
- Pensando/AMD:
- support PCI level reset
- narrow down the condition under which skbs are linearized
- Netronome/Corigine (nfp):
- support CHACHA20-POLY1305 crypto in IPsec offload
- Ethernet NICs embedded, slower, virtual:
- Synopsys (stmmac):
- add Loongson-1 SoC support
- enable use of HW queues with no offload capabilities
- enable PPS input support on all 5 channels
- increase TX coalesce timer to 5ms
- RealTek USB (r8152): improve efficiency of Rx by using GRO frags
- xen: support SW packet timestamping
- add drivers for implementations based on TI's PRUSS (AM64x EVM)
- nVidia/Mellanox Ethernet datacenter switches:
- avoid poor HW resource use on Spectrum-4 by better block
selection for IPv6 multicast forwarding and ordering of blocks
in ACL region
- Ethernet embedded switches:
- Microchip:
- support configuring the drive strength for EMI compliance
- ksz9477: partial ACL support
- ksz9477: HSR offload
- ksz9477: Wake on LAN
- Realtek:
- rtl8366rb: respect device tree config of the CPU port
- Ethernet PHYs:
- support Broadcom BCM5221 PHYs
- TI dp83867: support hardware LED blinking
- CAN:
- add support for Linux-PHY based CAN transceivers
- at91_can: clean up and use rx-offload helpers
- WiFi:
- MediaTek (mt76):
- new sub-driver for mt7925 USB/PCIe devices
- HW wireless <> Ethernet bridging in MT7988 chips
- mt7603/mt7628 stability improvements
- Qualcomm (ath12k):
- WCN7850:
- enable 320 MHz channels in 6 GHz band
- hardware rfkill support
- enable IEEE80211_HW_SINGLE_SCAN_ON_ALL_BANDS to
make scan faster
- read board data variant name from SMBIOS
- QCN9274: mesh support
- RealTek (rtw89):
- TDMA-based multi-channel concurrency (MCC)
- Silicon Labs (wfx):
- Remain-On-Channel (ROC) support
- Bluetooth:
- ISO: many improvements for broadcast support
- mark BCM4378/BCM4387 as BROKEN_LE_CODED
- add support for QCA2066
- btmtksdio: enable Bluetooth wakeup from suspend"
* tag 'net-next-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1816 commits)
net: pcs: xpcs: Add 2500BASE-X case in get state for XPCS drivers
net: bpf: Use sockopt_lock_sock() in ip_sock_set_tos()
net: mana: Use xdp_set_features_flag instead of direct assignment
vxlan: Cleanup IFLA_VXLAN_PORT_RANGE entry in vxlan_get_size()
iavf: delete the iavf client interface
iavf: add a common function for undoing the interrupt scheme
iavf: use unregister_netdev
iavf: rely on netdev's own registered state
iavf: fix the waiting time for initial reset
iavf: in iavf_down, don't queue watchdog_task if comms failed
iavf: simplify mutex_trylock+sleep loops
iavf: fix comments about old bit locks
doc/netlink: Update schema to support cmd-cnt-name and cmd-max-name
tools: ynl: introduce option to process unknown attributes or types
ipvlan: properly track tx_errors
netdevsim: Block until all devices are released
nfp: using napi_build_skb() to replace build_skb()
net: dsa: microchip: ksz9477: Fix spelling mistake "Enery" -> "Energy"
net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN
net: dsa: microchip: Refactor switch shutdown routine for WoL preparation
...
|
||
|
Linus Torvalds
|
5a6a09e971 |
cgroup: Changes for v6.7
* cpuset now supports remote partitions where CPUs can be reserved for exclusive use down the tree without requiring all the intermediate nodes to be partitions. This makes it easier to use partitions without modifying existing cgroup hierarchy. * cpuset partition configuration behavior improvement. * cgroup_favordynmods= boot param added to allow setting the flag on boot on cgroup1. * Misc code and doc updates. -----BEGIN PGP SIGNATURE----- iIQEABYIACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZUBUKA4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGWfMAP9WP+Z21qzzL2bY5I5kOxu+rD2fF9ORk7azILrI c3gXSQD/bdxNWcdtrCQMvs+ToNEJvqDFxrmgG5uRUF8Ea+FCtQ8= =gZj2 -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - cpuset now supports remote partitions where CPUs can be reserved for exclusive use down the tree without requiring all the intermediate nodes to be partitions. This makes it easier to use partitions without modifying existing cgroup hierarchy. - cpuset partition configuration behavior improvement - cgroup_favordynmods= boot param added to allow setting the flag on boot on cgroup1 - Misc code and doc updates * tag 'cgroup-for-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: docs/cgroup: Add the list of threaded controllers to cgroup-v2.rst cgroup: use legacy_name for cgroup v1 disable info cgroup/cpuset: Cleanup signedness issue in cpu_exclusive_check() cgroup/cpuset: Enable invalid to valid local partition transition cgroup: add cgroup_favordynmods= command-line option cgroup/cpuset: Extend test_cpuset_prs.sh to test remote partition cgroup/cpuset: Documentation update for partition cgroup/cpuset: Check partition conflict with housekeeping setup cgroup/cpuset: Introduce remote partition cgroup/cpuset: Add cpuset.cpus.exclusive for v2 cgroup/cpuset: Add cpuset.cpus.exclusive.effective for v2 cgroup/cpuset: Fix load balance state in update_partition_sd_lb() cgroup: Avoid extra dereference in css_populate_dir() cgroup: Check for ret during cgroup1_base_files cft addition |
||
|
Linus Torvalds
|
5e37269945 |
pstore updates for v6.7-rc1
- Check for out-of-memory condition during initialization (Jiasheng Jiang) - Fix documentation typos (Tudor Ambarus) -----BEGIN PGP SIGNATURE----- iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmU/4ioWHGtlZXNjb29r QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJuPsD/kBcJPVzn4zx3sx6LJZJL4d9/4M xQ22mJM5H/z1L9YY7PrxD8lDcpue7EJmr8/Q7tdcUHNjzSxgecfuSR9Eq1Apcmra RbQGv7B/VmbU8aPMr5k+XiIzGU9Evoj6aZLGB3bL+3uj9Xmadkrz6SvctJy0zcRg D5VpLkXLx1JzShVfplYQtmSIRUg3gcn9BbwbZTWgD4lVZD7UNx624xUBH7ywYxCB +qXKW+DvFiZAUszAGXSBWcPdx4pue0Ff0Q52ZnHjEdYOrlPC6dVQ1ABMDnWrNCVh 58i7dtREEX+IX50xtjsNkVU+DaunAP7VI0+/+fgDk8KLCYfh7dTXN0fOgSlHILnt zJx5qTkBh/A/g+3X21L5srq1qAwR7V3tBIQPQAlyBcJCneYHLaQSynsMynydrJaH nYbpWeINhXP/ZfDFA7bVum+uBMrz1stIuEWeL1pELTk7NUVkHtkmr14Af1+zNz0z GeKBrPebBhg9lbCPAmV8VT08vJJ+8tD/WA7fIfNLH7/LdYgl+tRFVs/c6yKDfmu9 p6wt5eCKVszg1jFYj/QMOBfOR5g2koectdO8qu4LI6PcW2hOTneCw1RLtwdUpFol 2HNXl+L69KVnhLNlKSAnRhPTfpcDb16ssFMQuVNWTXYS8rKW7J/+Mh9RYUbEzYaH Ftzs99LnZ+orxNvy+Q== =e8WJ -----END PGP SIGNATURE----- Merge tag 'pstore-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull pstore updates from Kees Cook: - Check for out-of-memory condition during initialization (Jiasheng Jiang) - Fix documentation typos (Tudor Ambarus) * tag 'pstore-v6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: pstore/platform: Add check for kstrdup docs: pstore-blk.rst: fix typo, s/console/ftrace docs: pstore-blk.rst: use "about" as a preposition after "care" |
||
|
Linus Torvalds
|
2656821f1f |
RCU pull request for v6.7
This pull request contains the following branches:
rcu/torture: RCU torture, locktorture and generic torture infrastructure
updates that include various fixes, cleanups and consolidations.
Among the user visible things, ftrace dumps can now be found into
their own file, and module parameters get better documented and
reported on dumps.
rcu/fixes: Generic and misc fixes all over the place. Some highlights:
* Hotplug handling has seen some light cleanups and comments.
* An RCU barrier can now be triggered through sysfs to serialize
memory stress testing and avoid OOM.
* Object information is now dumped in case of invalid callback
invocation.
* Also various SRCU issues, too hard to trigger to deserve urgent
pull requests, have been fixed.
rcu/docs: RCU documentation updates
rcu/refscale: RCU reference scalability test minor fixes and doc
improvements.
rcu/tasks: RCU tasks minor fixes
rcu/stall: Stall detection updates. Introduce RCU CPU Stall notifiers
that allows a subsystem to provide informations to help debugging.
Also cure some false positive stalls.
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Merge tag 'rcu-next-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks
Pull RCU updates from Frederic Weisbecker:
- RCU torture, locktorture and generic torture infrastructure updates
that include various fixes, cleanups and consolidations.
Among the user visible things, ftrace dumps can now be found into
their own file, and module parameters get better documented and
reported on dumps.
- Generic and misc fixes all over the place. Some highlights:
* Hotplug handling has seen some light cleanups and comments
* An RCU barrier can now be triggered through sysfs to serialize
memory stress testing and avoid OOM
* Object information is now dumped in case of invalid callback
invocation
* Also various SRCU issues, too hard to trigger to deserve urgent
pull requests, have been fixed
- RCU documentation updates
- RCU reference scalability test minor fixes and doc improvements.
- RCU tasks minor fixes
- Stall detection updates. Introduce RCU CPU Stall notifiers that
allows a subsystem to provide informations to help debugging. Also
cure some false positive stalls.
* tag 'rcu-next-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks: (56 commits)
srcu: Only accelerate on enqueue time
locktorture: Check the correct variable for allocation failure
srcu: Fix callbacks acceleration mishandling
rcu: Comment why callbacks migration can't wait for CPUHP_RCUTREE_PREP
rcu: Standardize explicit CPU-hotplug calls
rcu: Conditionally build CPU-hotplug teardown callbacks
rcu: Remove references to rcu_migrate_callbacks() from diagrams
rcu: Assume rcu_report_dead() is always called locally
rcu: Assume IRQS disabled from rcu_report_dead()
rcu: Use rcu_segcblist_segempty() instead of open coding it
rcu: kmemleak: Ignore kmemleak false positives when RCU-freeing objects
srcu: Fix srcu_struct node grpmask overflow on 64-bit systems
torture: Convert parse-console.sh to mktemp
rcutorture: Traverse possible cpu to set maxcpu in rcu_nocb_toggle()
rcutorture: Replace schedule_timeout*() 1-jiffy waits with HZ/20
torture: Add kvm.sh --debug-info argument
locktorture: Rename readers_bind/writers_bind to bind_readers/bind_writers
doc: Catch-up update for locktorture module parameters
locktorture: Add call_rcu_chains module parameter
locktorture: Add new module parameters to lock_torture_print_module_parms()
...
|
||
|
Linus Torvalds
|
9a0f53e0cf |
CSD lock commits for v6.7
This series adds a kernel boot parameter that causes the kernel to panic if one of the call_smp_function() APIs is stalled for more than the specified duration. This is useful in deployments in which a clean panic is preferable to an indefinite stall. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmU9plITHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jB91D/9OiOMtV03TXN2K+zGmJMjTFgLuVnug OqG4mrCv7jTJ3k6fTpu7hih/BCmG1Mu7byyPV6BUSfKsYony7L4yTPFJsjK8lNmq MHh847DErGieuURCDnsvqBVpYIRfXnvW9ptlf+BMCjbzz4FuUu1XhJTm+U2nab3i BEIEMORxDCyghh7yluAVG6sULRXOqjv5VcypwOXUbavDf0JyJTns4QlXFD85yiBr nvfHvLUrzu5EblA3m09lTnCaKrAlz5pwD7fWQq7bS3rz2gndR/DcVcZknQ68FMsj Mcf0Zf45TzyWWfMcE8LCulhMlZ2GYsIm2YkIbgwlsOAndjBrV55rsgaVbSZDke37 QMHPGUZ7m7AjuDqpWZITrJjQHkWCtn/5tFSazHSlMwWg44pgOqvc3OgZn04tzn01 L/guq3yBIKBJiAjdgzdx8/H9S7cSH8TLEWFY2utEAMIjef9Xzi6qwQ4X5p4K9QYJ Sm1hTTCbF9NeyMk0o2rokR58f13+9ewxE4RIYcwP9loo6nbBcTVN/fvdHN6jQywa 7UIui508AUf55zQgO+5z8LsmjyNiDmDIeE8CLeVDicllWN+ne7F//AXAuA5V8m+y G0Mphn/lZpnddDSFlR/QFuMvGqtpIu2y8w93awq8g/VzirbkiiCia3iFcFtss4ip n0Y50CCu/W70fw== =ZD0S -----END PGP SIGNATURE----- Merge tag 'csd-lock.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull CSD lock update from Paul McKenney: "This adds a kernel boot parameter that causes the kernel to panic if one of the call_smp_function() APIs is stalled for more than the specified duration. This is useful in deployments in which a clean panic is preferable to an indefinite stall" * tag 'csd-lock.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: smp,csd: Throw an error if a CSD lock is stuck for too long |
||
|
Linus Torvalds
|
ed766c2611 |
Changes to the x86 entry code in v6.7:
- Make IA32_EMULATION boot time configurable with
the new ia32_emulation=<bool> boot option.
- Clean up fast syscall return validation code: convert
it to C and refactor the code.
- As part of this, optimize the canonical RIP test code.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 entry updates from Ingo Molnar:
- Make IA32_EMULATION boot time configurable with
the new ia32_emulation=<bool> boot option
- Clean up fast syscall return validation code: convert
it to C and refactor the code
- As part of this, optimize the canonical RIP test code
* tag 'x86-entry-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/entry/32: Clean up syscall fast exit tests
x86/entry/64: Use TASK_SIZE_MAX for canonical RIP test
x86/entry/64: Convert SYSRET validation tests to C
x86/entry/32: Remove SEP test for SYSEXIT
x86/entry/32: Convert do_fast_syscall_32() to bool return type
x86/entry/compat: Combine return value test from syscall handler
x86/entry/64: Remove obsolete comment on tracing vs. SYSRET
x86: Make IA32_EMULATION boot time configurable
x86/entry: Make IA32 syscalls' availability depend on ia32_enabled()
x86/elf: Make loading of 32bit processes depend on ia32_enabled()
x86/entry: Compile entry_SYSCALL32_ignore() unconditionally
x86/entry: Rename ignore_sysret()
x86: Introduce ia32_enabled()
|
||
|
Linus Torvalds
|
63ce50fff9 |
Scheduler changes for v6.7 are:
- Fair scheduler (SCHED_OTHER) improvements:
- Remove the old and now unused SIS_PROP code & option
- Scan cluster before LLC in the wake-up path
- Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
- NUMA scheduling improvements:
- Improve the VMA access-PID code to better skip/scan VMAs
- Extend tracing to cover VMA-skipping decisions
- Improve/fix the recently introduced sched_numa_find_nth_cpu() code
- Generalize numa_map_to_online_node()
- Energy scheduling improvements:
- Remove the EM_MAX_COMPLEXITY limit
- Add tracepoints to track energy computation
- Make the behavior of the 'sched_energy_aware' sysctl more consistent
- Consolidate and clean up access to a CPU's max compute capacity
- Fix uclamp code corner cases
- RT scheduling improvements:
- Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
- Drive the ->rto_mask with rt_rq->pushable_tasks updates
- Scheduler scalability improvements:
- Rate-limit updates to tg->load_avg
- On x86 disable IBRS when CPU is offline to improve single-threaded performance
- Micro-optimize in_task() and in_interrupt()
- Micro-optimize the PSI code
- Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
- Core scheduler infrastructure improvements:
- Use saved_state to reduce some spurious freezer wakeups
- Bring in a handful of fast-headers improvements to scheduler headers
- Make the scheduler UAPI headers more widely usable by user-space
- Simplify the control flow of scheduler syscalls by using lock guards
- Fix sched_setaffinity() vs. CPU hotplug race
- Scheduler debuggability improvements:
- Disallow writing invalid values to sched_rt_period_us
- Fix a race in the rq-clock debugging code triggering warnings
- Fix a warning in the bandwidth distribution code
- Micro-optimize in_atomic_preempt_off() checks
- Enforce that the tasklist_lock is held in for_each_thread()
- Print the TGID in sched_show_task()
- Remove the /proc/sys/kernel/sched_child_runs_first sysctl
- Misc cleanups & fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler updates from Ingo Molnar:
"Fair scheduler (SCHED_OTHER) improvements:
- Remove the old and now unused SIS_PROP code & option
- Scan cluster before LLC in the wake-up path
- Use candidate prev/recent_used CPU if scanning failed for cluster
wakeup
NUMA scheduling improvements:
- Improve the VMA access-PID code to better skip/scan VMAs
- Extend tracing to cover VMA-skipping decisions
- Improve/fix the recently introduced sched_numa_find_nth_cpu() code
- Generalize numa_map_to_online_node()
Energy scheduling improvements:
- Remove the EM_MAX_COMPLEXITY limit
- Add tracepoints to track energy computation
- Make the behavior of the 'sched_energy_aware' sysctl more
consistent
- Consolidate and clean up access to a CPU's max compute capacity
- Fix uclamp code corner cases
RT scheduling improvements:
- Drive dl_rq->overloaded with dl_rq->pushable_dl_tasks updates
- Drive the ->rto_mask with rt_rq->pushable_tasks updates
Scheduler scalability improvements:
- Rate-limit updates to tg->load_avg
- On x86 disable IBRS when CPU is offline to improve single-threaded
performance
- Micro-optimize in_task() and in_interrupt()
- Micro-optimize the PSI code
- Avoid updating PSI triggers and ->rtpoll_total when there are no
state changes
Core scheduler infrastructure improvements:
- Use saved_state to reduce some spurious freezer wakeups
- Bring in a handful of fast-headers improvements to scheduler
headers
- Make the scheduler UAPI headers more widely usable by user-space
- Simplify the control flow of scheduler syscalls by using lock
guards
- Fix sched_setaffinity() vs. CPU hotplug race
Scheduler debuggability improvements:
- Disallow writing invalid values to sched_rt_period_us
- Fix a race in the rq-clock debugging code triggering warnings
- Fix a warning in the bandwidth distribution code
- Micro-optimize in_atomic_preempt_off() checks
- Enforce that the tasklist_lock is held in for_each_thread()
- Print the TGID in sched_show_task()
- Remove the /proc/sys/kernel/sched_child_runs_first sysctl
... and misc cleanups & fixes"
* tag 'sched-core-2023-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (82 commits)
sched/fair: Remove SIS_PROP
sched/fair: Use candidate prev/recent_used CPU if scanning failed for cluster wakeup
sched/fair: Scan cluster before scanning LLC in wake-up path
sched: Add cpus_share_resources API
sched/core: Fix RQCF_ACT_SKIP leak
sched/fair: Remove unused 'curr' argument from pick_next_entity()
sched/nohz: Update comments about NEWILB_KICK
sched/fair: Remove duplicate #include
sched/psi: Update poll => rtpoll in relevant comments
sched: Make PELT acronym definition searchable
sched: Fix stop_one_cpu_nowait() vs hotplug
sched/psi: Bail out early from irq time accounting
sched/topology: Rename 'DIE' domain to 'PKG'
sched/psi: Delete the 'update_total' function parameter from update_triggers()
sched/psi: Avoid updating PSI triggers and ->rtpoll_total when there are no state changes
sched/headers: Remove comment referring to rq::cpu_load, since this has been removed
sched/numa: Complete scanning of inactive VMAs when there is no alternative
sched/numa: Complete scanning of partial VMAs regardless of PID activity
sched/numa: Move up the access pid reset logic
sched/numa: Trace decisions related to skipping VMAs
...
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Dimitri John Ledkov
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f2b88bab69 |
Documentation/module-signing.txt: bring up to date
Update the documentation to mention that ECC NIST P-384 automatic keypair generation is available to use ECDSA signature type, in addition to the RSA. Drop mentions of the now removed SHA-1 and SHA-224 options. Add the just added FIPS 202 SHA-3 module signature hashes. Signed-off-by: Dimitri John Ledkov <dimitri.ledkov@canonical.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Joerg Roedel
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e8cca466a8 | Merge branches 'iommu/fixes', 'arm/tegra', 'arm/smmu', 'virtio', 'x86/vt-d', 'x86/amd', 'core' and 's390' into next | ||
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Samuel Thibault
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07d87ceaec |
speakup: Document USB support
Speakup has been supporting USB for a while already. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231020181059.7rtj2csi7t6vorrm@begin |
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Tang Yizhou
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c1081a7b16 |
doc: blk-ioprio: Bring the doc in line with the implementation
Our system administrator have noted that the names 'rt-to-be' and 'all-to-idle' in the I/O priority policies table appeared without explanations, leading to confusion. Let's bring these names in line with the naming in the 'attribute' section. Additionally, 1. Correct the interface name to 'io.prio.class'. 2. Add a table entry of 'promote-to-rt' for consistency. 3. Fix a typo of 'priority'. Suggested-by: Yingfu Zhou <yingfu.zhou@shopee.com> Reviewed-by: Hou Tao <houtao1@huawei.com> Signed-off-by: Tang Yizhou <yizhou.tang@shopee.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231012024228.2161283-1-yizhou.tang@shopee.com |
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Geert Uytterhoeven
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78a96c86a0 |
Documentation: kernel-parameters: Add earlyprintk=bios on SH
Document the use of the "earlyprintk=bios[,keep]" kernel parameter option on SuperH systems with a SuperH standard BIOS. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/febc920964f2f0919d21775132e84c5cc270177e.1697708489.git.geert+renesas@glider.be Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> |
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Thomas Gleixner
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9407bda845 |
x86/microcode: Prepare for minimal revision check
Applying microcode late can be fatal for the running kernel when the update changes functionality which is in use already in a non-compatible way, e.g. by removing a CPUID bit. There is no way for admins which do not have access to the vendors deep technical support to decide whether late loading of such a microcode is safe or not. Intel has added a new field to the microcode header which tells the minimal microcode revision which is required to be active in the CPU in order to be safe. Provide infrastructure for handling this in the core code and a command line switch which allows to enforce it. If the update is considered safe the kernel is not tainted and the annoying warning message not emitted. If it's enforced and the currently loaded microcode revision is not safe for late loading then the load is aborted. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20231017211724.079611170@linutronix.de |
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Frederic Weisbecker
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d97ae6474c |
Merge branches 'rcu/torture', 'rcu/fixes', 'rcu/docs', 'rcu/refscale', 'rcu/tasks' and 'rcu/stall' into rcu/next
rcu/torture: RCU torture, locktorture and generic torture infrastructure rcu/fixes: Generic and misc fixes rcu/docs: RCU documentation updates rcu/refscale: RCU reference scalability test updates rcu/tasks: RCU tasks updates rcu/stall: Stall detection updates |
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Jade Lovelace
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a10874e8db |
Documentation: fix typo in dynamic-debug howto
Signed-off-by: Jade Lovelace <lists@jade.fyi> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20231019231655.3162225-1-lists@jade.fyi> |
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Trond Myklebust
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5b9d31ae1c |
NFSv4: Add a parameter to limit the number of retries after NFS4ERR_DELAY
When using a 'softerr' mount, the NFSv4 client can get stuck waiting forever while the server just returns NFS4ERR_DELAY. Among other things, this causes the knfsd server threads to busy wait. Add a parameter that tells the NFSv4 client how many times to retry before giving up. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> |
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Josh Poimboeuf
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dc6306ad5b |
x86/srso: Fix vulnerability reporting for missing microcode
The SRSO default safe-ret mitigation is reported as "mitigated" even if
microcode hasn't been updated. That's wrong because userspace may still
be vulnerable to SRSO attacks due to IBPB not flushing branch type
predictions.
Report the safe-ret + !microcode case as vulnerable.
Also report the microcode-only case as vulnerable as it leaves the
kernel open to attacks.
Fixes:
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SeongJae Park
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bc17ea26a8 |
Docs/admin-guide/mm/damon/usage: update for tried regions update time interval
The documentation says DAMOS tried regions update feature of DAMON sysfs interface is doing the update for one aggregation interval after the request is made. Since the introduction of the per-scheme apply interval, that behavior makes no much sense. Hence the implementation has changed to update the regions for each scheme for only its apply interval. Further update the document to reflect the real behavior. Link: https://lkml.kernel.org/r/20231012192256.33556-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Nhat Pham
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8cba9576df |
hugetlb: memcg: account hugetlb-backed memory in memory controller
Currently, hugetlb memory usage is not acounted for in the memory
controller, which could lead to memory overprotection for cgroups with
hugetlb-backed memory. This has been observed in our production system.
For instance, here is one of our usecases: suppose there are two 32G
containers. The machine is booted with hugetlb_cma=6G, and each container
may or may not use up to 3 gigantic page, depending on the workload within
it. The rest is anon, cache, slab, etc. We can set the hugetlb cgroup
limit of each cgroup to 3G to enforce hugetlb fairness. But it is very
difficult to configure memory.max to keep overall consumption, including
anon, cache, slab etc. fair.
What we have had to resort to is to constantly poll hugetlb usage and
readjust memory.max. Similar procedure is done to other memory limits
(memory.low for e.g). However, this is rather cumbersome and buggy.
Furthermore, when there is a delay in memory limits correction, (for e.g
when hugetlb usage changes within consecutive runs of the userspace
agent), the system could be in an over/underprotected state.
This patch rectifies this issue by charging the memcg when the hugetlb
folio is utilized, and uncharging when the folio is freed (analogous to
the hugetlb controller). Note that we do not charge when the folio is
allocated to the hugetlb pool, because at this point it is not owned by
any memcg.
Some caveats to consider:
* This feature is only available on cgroup v2.
* There is no hugetlb pool management involved in the memory
controller. As stated above, hugetlb folios are only charged towards
the memory controller when it is used. Host overcommit management
has to consider it when configuring hard limits.
* Failure to charge towards the memcg results in SIGBUS. This could
happen even if the hugetlb pool still has pages (but the cgroup
limit is hit and reclaim attempt fails).
* When this feature is enabled, hugetlb pages contribute to memory
reclaim protection. low, min limits tuning must take into account
hugetlb memory.
* Hugetlb pages utilized while this option is not selected will not
be tracked by the memory controller (even if cgroup v2 is remounted
later on).
Link: https://lkml.kernel.org/r/20231006184629.155543-4-nphamcs@gmail.com
Signed-off-by: Nhat Pham <nphamcs@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Frank van der Linden <fvdl@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Rik van Riel <riel@surriel.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Tejun heo <tj@kernel.org>
Cc: Yosry Ahmed <yosryahmed@google.com>
Cc: Zefan Li <lizefan.x@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Muhammad Usama Anjum
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18825b8ae9 |
mm/pagemap: add documentation of PAGEMAP_SCAN IOCTL
Add some explanation and method to use write-protection and written-to on memory range. Link: https://lkml.kernel.org/r/20230821141518.870589-6-usama.anjum@collabora.com Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrei Vagin <avagin@gmail.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Miroslaw <emmir@google.com> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Nadav Amit <namit@vmware.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Paul Gofman <pgofman@codeweavers.com> Cc: Peter Xu <peterx@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Yun Zhou <yun.zhou@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peter Xu
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d61ea1cb00 |
userfaultfd: UFFD_FEATURE_WP_ASYNC
Patch series "Implement IOCTL to get and optionally clear info about PTEs", v33. *Motivation* The real motivation for adding PAGEMAP_SCAN IOCTL is to emulate Windows GetWriteWatch() and ResetWriteWatch() syscalls [1]. The GetWriteWatch() retrieves the addresses of the pages that are written to in a region of virtual memory. This syscall is used in Windows applications and games etc. This syscall is being emulated in pretty slow manner in userspace. Our purpose is to enhance the kernel such that we translate it efficiently in a better way. Currently some out of tree hack patches are being used to efficiently emulate it in some kernels. We intend to replace those with these patches. So the whole gaming on Linux can effectively get benefit from this. It means there would be tons of users of this code. CRIU use case [2] was mentioned by Andrei and Danylo: > Use cases for migrating sparse VMAs are binaries sanitized with ASAN, > MSAN or TSAN [3]. All of these sanitizers produce sparse mappings of > shadow memory [4]. Being able to migrate such binaries allows to highly > reduce the amount of work needed to identify and fix post-migration > crashes, which happen constantly. Andrei defines the following uses of this code: * it is more granular and allows us to track changed pages more effectively. The current interface can clear dirty bits for the entire process only. In addition, reading info about pages is a separate operation. It means we must freeze the process to read information about all its pages, reset dirty bits, only then we can start dumping pages. The information about pages becomes more and more outdated, while we are processing pages. The new interface solves both these downsides. First, it allows us to read pte bits and clear the soft-dirty bit atomically. It means that CRIU will not need to freeze processes to pre-dump their memory. Second, it clears soft-dirty bits for a specified region of memory. It means CRIU will have actual info about pages to the moment of dumping them. * The new interface has to be much faster because basic page filtering is happening in the kernel. With the old interface, we have to read pagemap for each page. *Implementation Evolution (Short Summary)* From the definition of GetWriteWatch(), we feel like kernel's soft-dirty feature can be used under the hood with some additions like: * reset soft-dirty flag for only a specific region of memory instead of clearing the flag for the entire process * get and clear soft-dirty flag for a specific region atomically So we decided to use ioctl on pagemap file to read or/and reset soft-dirty flag. But using soft-dirty flag, sometimes we get extra pages which weren't even written. They had become soft-dirty because of VMA merging and VM_SOFTDIRTY flag. This breaks the definition of GetWriteWatch(). We were able to by-pass this short coming by ignoring VM_SOFTDIRTY until David reported that mprotect etc messes up the soft-dirty flag while ignoring VM_SOFTDIRTY [5]. This wasn't happening until [6] got introduced. We discussed if we can revert these patches. But we could not reach to any conclusion. So at this point, I made couple of tries to solve this whole VM_SOFTDIRTY issue by correcting the soft-dirty implementation: * [7] Correct the bug fixed wrongly back in 2014. It had potential to cause regression. We left it behind. * [8] Keep a list of soft-dirty part of a VMA across splits and merges. I got the reply don't increase the size of the VMA by 8 bytes. At this point, we left soft-dirty considering it is too much delicate and userfaultfd [9] seemed like the only way forward. From there onward, we have been basing soft-dirty emulation on userfaultfd wp feature where kernel resolves the faults itself when WP_ASYNC feature is used. It was straight forward to add WP_ASYNC feature in userfautlfd. Now we get only those pages dirty or written-to which are really written in reality. (PS There is another WP_UNPOPULATED userfautfd feature is required which is needed to avoid pre-faulting memory before write-protecting [9].) All the different masks were added on the request of CRIU devs to create interface more generic and better. [1] https://learn.microsoft.com/en-us/windows/win32/api/memoryapi/nf-memoryapi-getwritewatch [2] https://lore.kernel.org/all/20221014134802.1361436-1-mdanylo@google.com [3] https://github.com/google/sanitizers [4] https://github.com/google/sanitizers/wiki/AddressSanitizerAlgorithm#64-bit [5] https://lore.kernel.org/all/bfcae708-db21-04b4-0bbe-712badd03071@redhat.com [6] https://lore.kernel.org/all/20220725142048.30450-1-peterx@redhat.com/ [7] https://lore.kernel.org/all/20221122115007.2787017-1-usama.anjum@collabora.com [8] https://lore.kernel.org/all/20221220162606.1595355-1-usama.anjum@collabora.com [9] https://lore.kernel.org/all/20230306213925.617814-1-peterx@redhat.com [10] https://lore.kernel.org/all/20230125144529.1630917-1-mdanylo@google.com This patch (of 6): Add a new userfaultfd-wp feature UFFD_FEATURE_WP_ASYNC, that allows userfaultfd wr-protect faults to be resolved by the kernel directly. It can be used like a high accuracy version of soft-dirty, without vma modifications during tracking, and also with ranged support by default rather than for a whole mm when reset the protections due to existence of ioctl(UFFDIO_WRITEPROTECT). Several goals of such a dirty tracking interface: 1. All types of memory should be supported and tracable. This is nature for soft-dirty but should mention when the context is userfaultfd, because it used to only support anon/shmem/hugetlb. The problem is for a dirty tracking purpose these three types may not be enough, and it's legal to track anything e.g. any page cache writes from mmap. 2. Protections can be applied to partial of a memory range, without vma split/merge fuss. The hope is that the tracking itself should not affect any vma layout change. It also helps when reset happens because the reset will not need mmap write lock which can block the tracee. 3. Accuracy needs to be maintained. This means we need pte markers to work on any type of VMA. One could question that, the whole concept of async dirty tracking is not really close to fundamentally what userfaultfd used to be: it's not "a fault to be serviced by userspace" anymore. However, using userfaultfd-wp here as a framework is convenient for us in at least: 1. VM_UFFD_WP vma flag, which has a very good name to suite something like this, so we don't need VM_YET_ANOTHER_SOFT_DIRTY. Just use a new feature bit to identify from a sync version of uffd-wp registration. 2. PTE markers logic can be leveraged across the whole kernel to maintain the uffd-wp bit as long as an arch supports, this also applies to this case where uffd-wp bit will be a hint to dirty information and it will not go lost easily (e.g. when some page cache ptes got zapped). 3. Reuse ioctl(UFFDIO_WRITEPROTECT) interface for either starting or resetting a range of memory, while there's no counterpart in the old soft-dirty world, hence if this is wanted in a new design we'll need a new interface otherwise. We can somehow understand that commonality because uffd-wp was fundamentally a similar idea of write-protecting pages just like soft-dirty. This implementation allows WP_ASYNC to imply WP_UNPOPULATED, because so far WP_ASYNC seems to not usable if without WP_UNPOPULATE. This also gives us chance to modify impl of WP_ASYNC just in case it could be not depending on WP_UNPOPULATED anymore in the future kernels. It's also fine to imply that because both features will rely on PTE_MARKER_UFFD_WP config option, so they'll show up together (or both missing) in an UFFDIO_API probe. vma_can_userfault() now allows any VMA if the userfaultfd registration is only about async uffd-wp. So we can track dirty for all kinds of memory including generic file systems (like XFS, EXT4 or BTRFS). One trick worth mention in do_wp_page() is that we need to manually update vmf->orig_pte here because it can be used later with a pte_same() check - this path always has FAULT_FLAG_ORIG_PTE_VALID set in the flags. The major defect of this approach of dirty tracking is we need to populate the pgtables when tracking starts. Soft-dirty doesn't do it like that. It's unwanted in the case where the range of memory to track is huge and unpopulated (e.g., tracking updates on a 10G file with mmap() on top, without having any page cache installed yet). One way to improve this is to allow pte markers exist for larger than PTE level for PMD+. That will not change the interface if to implemented, so we can leave that for later. Link: https://lkml.kernel.org/r/20230821141518.870589-1-usama.anjum@collabora.com Link: https://lkml.kernel.org/r/20230821141518.870589-2-usama.anjum@collabora.com Signed-off-by: Peter Xu <peterx@redhat.com> Co-developed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Andrei Vagin <avagin@gmail.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Hildenbrand <david@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michal Miroslaw <emmir@google.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Nadav Amit <namit@vmware.com> Cc: Pasha Tatashin <pasha.tatashin@soleen.com> Cc: Paul Gofman <pgofman@codeweavers.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: Yang Shi <shy828301@gmail.com> Cc: Yun Zhou <yun.zhou@windriver.com> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Waiman Long
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a41796b553 |
docs/cgroup: Add the list of threaded controllers to cgroup-v2.rst
The cgroup-v2 file mentions the concept of threaded controllers which can be used in a threaded cgroup. However, it doesn't mention clearly which controllers are threaded leading to some confusion about what controller can be used requiring some experimentation. Clear this up by explicitly listing the controllers that can be used currently in a threaded cgroup. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Jakub Kicinski
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a3c2dd9648 |
bpf-next-for-netdev
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTFp0I1jqZrAX+hPRXbK58LschIgwUCZS1d4wAKCRDbK58LschI g4DSAP441CdKh8fd+wNKUSKHFbpCQ6EvocR6Nf+Sj2DFUx/w/QEA7mfju7Abqjc3 xwDEx0BuhrjMrjV5MmEpxc7lYl9XcQU= =vuWk -----END PGP SIGNATURE----- Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Daniel Borkmann says: ==================== pull-request: bpf-next 2023-10-16 We've added 90 non-merge commits during the last 25 day(s) which contain a total of 120 files changed, 3519 insertions(+), 895 deletions(-). The main changes are: 1) Add missed stats for kprobes to retrieve the number of missed kprobe executions and subsequent executions of BPF programs, from Jiri Olsa. 2) Add cgroup BPF sockaddr hooks for unix sockets. The use case is for systemd to reimplement the LogNamespace feature which allows running multiple instances of systemd-journald to process the logs of different services, from Daan De Meyer. 3) Implement BPF CPUv4 support for s390x BPF JIT, from Ilya Leoshkevich. 4) Improve BPF verifier log output for scalar registers to better disambiguate their internal state wrt defaults vs min/max values matching, from Andrii Nakryiko. 5) Extend the BPF fib lookup helpers for IPv4/IPv6 to support retrieving the source IP address with a new BPF_FIB_LOOKUP_SRC flag, from Martynas Pumputis. 6) Add support for open-coded task_vma iterator to help with symbolization for BPF-collected user stacks, from Dave Marchevsky. 7) Add libbpf getters for accessing individual BPF ring buffers which is useful for polling them individually, for example, from Martin Kelly. 8) Extend AF_XDP selftests to validate the SHARED_UMEM feature, from Tushar Vyavahare. 9) Improve BPF selftests cross-building support for riscv arch, from Björn Töpel. 10) Add the ability to pin a BPF timer to the same calling CPU, from David Vernet. 11) Fix libbpf's bpf_tracing.h macros for riscv to use the generic implementation of PT_REGS_SYSCALL_REGS() to access syscall arguments, from Alexandre Ghiti. 12) Extend libbpf to support symbol versioning for uprobes, from Hengqi Chen. 13) Fix bpftool's skeleton code generation to guarantee that ELF data is 8 byte aligned, from Ian Rogers. 14) Inherit system-wide cpu_mitigations_off() setting for Spectre v1/v4 security mitigations in BPF verifier, from Yafang Shao. 15) Annotate struct bpf_stack_map with __counted_by attribute to prepare BPF side for upcoming __counted_by compiler support, from Kees Cook. * tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (90 commits) bpf: Ensure proper register state printing for cond jumps bpf: Disambiguate SCALAR register state output in verifier logs selftests/bpf: Make align selftests more robust selftests/bpf: Improve missed_kprobe_recursion test robustness selftests/bpf: Improve percpu_alloc test robustness selftests/bpf: Add tests for open-coded task_vma iter bpf: Introduce task_vma open-coded iterator kfuncs selftests/bpf: Rename bpf_iter_task_vma.c to bpf_iter_task_vmas.c bpf: Don't explicitly emit BTF for struct btf_iter_num bpf: Change syscall_nr type to int in struct syscall_tp_t net/bpf: Avoid unused "sin_addr_len" warning when CONFIG_CGROUP_BPF is not set bpf: Avoid unnecessary audit log for CPU security mitigations selftests/bpf: Add tests for cgroup unix socket address hooks selftests/bpf: Make sure mount directory exists documentation/bpf: Document cgroup unix socket address hooks bpftool: Add support for cgroup unix socket address hooks libbpf: Add support for cgroup unix socket address hooks bpf: Implement cgroup sockaddr hooks for unix sockets bpf: Add bpf_sock_addr_set_sun_path() to allow writing unix sockaddr from bpf bpf: Propagate modified uaddrlen from cgroup sockaddr programs ... ==================== Link: https://lore.kernel.org/r/20231016204803.30153-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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Rik van Riel
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94b3f0b5af |
smp,csd: Throw an error if a CSD lock is stuck for too long
The CSD lock seems to get stuck in 2 "modes". When it gets stuck temporarily, it usually gets released in a few seconds, and sometimes up to one or two minutes. If the CSD lock stays stuck for more than several minutes, it never seems to get unstuck, and gradually more and more things in the system end up also getting stuck. In the latter case, we should just give up, so the system can dump out a little more information about what went wrong, and, with panic_on_oops and a kdump kernel loaded, dump a whole bunch more information about what might have gone wrong. In addition, there is an smp.panic_on_ipistall kernel boot parameter that by default retains the old behavior, but when set enables the panic after the CSD lock has been stuck for more than the specified number of milliseconds, as in 300,000 for five minutes. [ paulmck: Apply Imran Khan feedback. ] [ paulmck: Apply Leonardo Bras feedback. ] Link: https://lore.kernel.org/lkml/bc7cc8b0-f587-4451-8bcd-0daae627bcc7@paulmck-laptop/ Signed-off-by: Rik van Riel <riel@surriel.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Reviewed-by: Imran Khan <imran.f.khan@oracle.com> Reviewed-by: Leonardo Bras <leobras@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Valentin Schneider <vschneid@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Randy Dunlap <rdunlap@infradead.org> |
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Stefan Roesch
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b0540208a5 |
mm/ksm: document pages_skipped sysfs knob
This adds documentation for the new metric pages_skipped. Link: https://lkml.kernel.org/r/20230926040939.516161-5-shr@devkernel.io Signed-off-by: Stefan Roesch <shr@devkernel.io> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Stefan Roesch
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75d7dd4138 |
mm/ksm: document smart scan mode
This adds documentation for the smart scan mode of KSM. [akpm@linux-foundation.org: fix typo] [akpm@linux-foundation.org: document that smart_scan defaults to on] Link: https://lkml.kernel.org/r/20230926040939.516161-4-shr@devkernel.io Signed-off-by: Stefan Roesch <shr@devkernel.io> Reviewed-by: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ilkka Koskinen
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0abe7f61c2 |
docs/perf: Add ampere_cspmu to toctree to fix a build warning
Add ampere_cspmu to toctree in order to address the following warning
produced when building documents:
Documentation/admin-guide/perf/ampere_cspmu.rst: WARNING: document isn't included in any toctree
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Closes: https://lore.kernel.org/all/20231011172250.5a6498e5@canb.auug.org.au/
Fixes:
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Amos Wenger
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2087f270be |
mm/memory-hotplug: fix typo in documentation
I'm 90% sure memory hotunplugging doesn't involve a "fist" phase Signed-off-by: Amos Wenger <amos@bearcove.net> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20231006112636.97128-1-amos@bearcove.net |
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Vratislav Bendel
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d17ff438a0 |
docs: mm: fix vm overcommit documentation for OVERCOMMIT_GUESS
Commit
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Takahiro Itazuri
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a3c12cf3a6 |
docs/hw-vuln: Update desc of best effort mode
Moves the description of the best effort mitigation mode to the table of the possible values in the mds and tsx_async_abort docs, and adds the same one to the mmio_stale_data doc. Signed-off-by: Takahiro Itazuri <itazur@amazon.com> Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230901082959.28310-1-itazur@amazon.com |
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Ilkka Koskinen
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53a810ad3c |
perf: arm_cspmu: ampere_cspmu: Add support for Ampere SoC PMU
Ampere SoC PMU follows CoreSight PMU architecture. It uses implementation specific registers to filter events rather than PMEVFILTnR registers. Signed-off-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> Link: https://lore.kernel.org/r/20230913233941.9814-5-ilkka@os.amperecomputing.com [will: Include linux/io.h in ampere_cspmu.c for writel()] Signed-off-by: Will Deacon <will@kernel.org> |
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Shrikanth Hegde
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8f833c82cd |
sched/topology: Change behaviour of the 'sched_energy_aware' sysctl, based on the platform
The 'sched_energy_aware' sysctl is available for the admin to disable/enable energy aware scheduling(EAS). EAS is enabled only if few conditions are met by the platform. They are, asymmetric CPU capacity, no SMT, schedutil CPUfreq governor, frequency invariant load tracking etc. A platform may boot without EAS capability, but could gain such capability at runtime. For example, changing/registering the cpufreq governor to schedutil. At present, though platform doesn't support EAS, this sysctl returns 1 and it ends up calling build_perf_domains on write to 1 and NOP when writing to 0. That is confusing and un-necessary. Desired behavior would be to have this sysctl to enable/disable the EAS on supported platform. On non-supported platform write to the sysctl would return not supported error and read of the sysctl would return empty. So sched_energy_aware returns empty - EAS is not possible at this moment This will include EAS capable platforms which have at least one EAS condition false during startup, e.g. not using the schedutil cpufreq governor sched_energy_aware returns 0 - EAS is supported but disabled by admin. sched_energy_aware returns 1 - EAS is supported and enabled. User can find out the reason why EAS is not possible by checking info messages. sched_is_eas_possible returns true if the platform can do EAS at this moment. Signed-off-by: Shrikanth Hegde <sshegde@linux.vnet.ibm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Valentin Schneider <vschneid@redhat.com> Link: https://lore.kernel.org/r/20231009060037.170765-3-sshegde@linux.vnet.ibm.com |
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Waiman Long
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aa1567a7e6 |
intel_idle: Add ibrs_off module parameter to force-disable IBRS
Commit
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Ross Zwisler
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85b901e600 |
media: visl: use canonical ftrace path
The canonical location for the tracefs filesystem is at /sys/kernel/tracing. But, from Documentation/trace/ftrace.rst: Before 4.1, all ftrace tracing control files were within the debugfs file system, which is typically located at /sys/kernel/debug/tracing. For backward compatibility, when mounting the debugfs file system, the tracefs file system will be automatically mounted at: /sys/kernel/debug/tracing Update the visl decoder driver documentation to use this tracefs path. Signed-off-by: Ross Zwisler <zwisler@google.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Martin Tůma
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bd7e2477d7 |
media: Documentation: Added Digiteq Automotive MGB4 driver documentation
The "admin-guide" documentation for the Digiteq Automotive MGB4 driver. Signed-off-by: Martin Tůma <martin.tuma@digiteqautomotive.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Liu Shixin
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72a14e821c |
memcg: expose swapcache stat for memcg v1
Patch series "Expose swapcache stat for memcg v1", v2.
Since commit
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Ingo Molnar
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3fc18b06b8 |
Linux 6.6-rc4
-----BEGIN PGP SIGNATURE----- iQFSBAABCAA8FiEEq68RxlopcLEwq+PEeb4+QwBBGIYFAmUZ4WEeHHRvcnZhbGRz QGxpbnV4LWZvdW5kYXRpb24ub3JnAAoJEHm+PkMAQRiGnIYH/07zef2U1nlqI+ro HRL2GlWGIs9yE70Oax+A3eYUYsjJIPu0yiDhFHUgOV3VyAALo44ZX/WNwKCGsI3e zhuOeItyyVcLGZXVC/jxSu0uveyfEiEYIWRYGyQ6Sna8Ksdk/qwhNgQNotdWdQG5 7xt8z32couglu0uOkxcGqjTxmbjO6WSM5qi7Ts+xLsgrcS5cRuNhAg/vezp9bfeL 1IUieCih4RJFgar/6LPOiB8uoVXEBonVbtlTRRqYdnqcsSIC+ACR9ZFk/+X88b5z S+Ta5VTcOAPu+2M/lSGe+PlUECvoBNK0SIYnaVCP2paPmDxfDXOFvSy/qJE87/7L 9BeonFw= =8FTr -----END PGP SIGNATURE----- Merge tag 'v6.6-rc4' into x86/entry, to pick up fixes Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Luiz Capitulino
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9b81d3a5be |
cgroup: add cgroup_favordynmods= command-line option
We have a need of using favordynmods with cgroup v1, which doesn't support changing mount flags during remount. Enabling CONFIG_CGROUP_FAVOR_DYNMODS at build-time is not an option because we want to be able to selectively enable it for certain systems. This commit addresses this by introducing the cgroup_favordynmods= command-line option. This option works for both cgroup v1 and v2 and also allows for disabling favorynmods when the kernel built with CONFIG_CGROUP_FAVOR_DYNMODS=y. Also, note that when cgroup_favordynmods=true favordynmods is never disabled in cgroup_destroy_root(). Signed-off-by: Luiz Capitulino <luizcap@amazon.com> Reviewed-by: Michal Koutný <mkoutny@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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SeongJae Park
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033343d5c5 |
Docs/admin-guide/mm/damon/usage: update for DAMOS apply intervals
Update DAMON usage document's DAMON sysfs interface section for the newly added DAMOS apply intervals support (apply_interval_us file). Link: https://lkml.kernel.org/r/20230916020945.47296-9-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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1b2b7a17ab |
Docs/admin-guide/mm/damon/usage: document damos_before_apply tracepoint
Document damos_before_apply tracepoint on the usage document. Link: https://lkml.kernel.org/r/20230913022050.2109-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Xin Hao
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811244a501 |
mm: memcg: add THP swap out info for anonymous reclaim
At present, we support per-memcg reclaim strategy, however we do not know the number of transparent huge pages being reclaimed, as we know the transparent huge pages need to be splited before reclaim them, and they will bring some performance bottleneck effect. for example, when two memcg (A & B) are doing reclaim for anonymous pages at same time, and 'A' memcg is reclaiming a large number of transparent huge pages, we can better analyze that the performance bottleneck will be caused by 'A' memcg. therefore, in order to better analyze such problems, there add THP swap out info for per-memcg. [akpm@linux-foundation.orgL fix swap_writepage_fs(), per Johannes] Link: https://lkml.kernel.org/r/20230913213343.GB48476@cmpxchg.org Link: https://lkml.kernel.org/r/20230913164938.16918-1-vernhao@tencent.com Signed-off-by: Xin Hao <vernhao@tencent.com> Suggested-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Roman Gushchin <roman.gushchin@linux.dev> Cc: Shakeel Butt <shakeelb@google.com> Cc: Muchun Song <songmuchun@bytedance.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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46158bf211 |
Docs/admin-guide/mm/damon/usage: link design doc for details of kdamond and context
The explanation of kdamond and context is duplicated in the design and the usage documents. Replace that in the usage with links to those in the design document. Link: https://lkml.kernel.org/r/20230907022929.91361-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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4f554ca15a |
Docs/admin-guide/mm/damon/usage: explain the format of damon_aggregate tracepoint
The example of the section for damon_aggregated tracepoint is not explaining how the output looks like, and how it can be interpreted. Add it. Link: https://lkml.kernel.org/r/20230907022929.91361-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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4f7112786e |
Docs/admin-guide/mm/damon/usage: move debugfs intro to the bottom of the section
On the DAMON usage introduction section, the introduction of DAMON debugfs interface, which is deprecated, is above kernel API, which is actively supported. Move the DAMON debugfs intro to bottom, so that readers have less chances to read it. Link: https://lkml.kernel.org/r/20230907022929.91361-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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75999724ba |
Docs/admin-guide/mm/damon/usage: place debugfs usage at the bottom
debugfs interface is deprecated. Put it at the bottom of the document so that readers have less chances to read it. Link: https://lkml.kernel.org/r/20230907022929.91361-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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b4c078004a |
Docs/admin-guide/mm/damon/usage: fixup missed :ref: keyword
Patch series "mm/damon: misc fixups for documents, comments and its tracepoint". This patchset contains miscellaneous simple fixups for documents, comments and tracepoint of DAMON. This patch (of 11): A cross-link reference in DAMON usage document is missing ':ref:' Sphynx keyword. Fix it. Link: https://lkml.kernel.org/r/20230907022929.91361-1-sj@kernel.org Link: https://lkml.kernel.org/r/20230907022929.91361-2-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Randy Dunlap
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92224e806f |
docs: admin-guide: sysctl: fix details of struct dentry_stat_t
Commit |
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Niklas Schnelle
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c76c067e48 |
s390/pci: Use dma-iommu layer
While s390 already has a standard IOMMU driver and previous changes have added I/O TLB flushing operations this driver is currently only used for user-space PCI access such as vfio-pci. For the DMA API s390 instead utilizes its own implementation in arch/s390/pci/pci_dma.c which drives the same hardware and shares some code but requires a complex and fragile hand over between DMA API and IOMMU API use of a device and despite code sharing still leads to significant duplication and maintenance effort. Let's utilize the common code DMAP API implementation from drivers/iommu/dma-iommu.c instead allowing us to get rid of arch/s390/pci/pci_dma.c. Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com> Link: https://lore.kernel.org/r/20230928-dma_iommu-v13-3-9e5fc4dacc36@linux.ibm.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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Michal Hocko
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4597648fdd |
mm, memcg: reconsider kmem.limit_in_bytes deprecation
This reverts commits |
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Fernando Eckhardt Valle
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18801efed7
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platform/x86: thinkpad_acpi: sysfs interface to auxmac
Newer Thinkpads have a feature called MAC Address Pass-through. This patch provides a sysfs interface that userspace can use to get this auxiliary mac address. Signed-off-by: Fernando Eckhardt Valle <fevalle@ipt.br> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230926202144.5906-1-fevalle@ipt.br Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> |
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Paul E. McKenney
|
2273799c29 |
locktorture: Rename readers_bind/writers_bind to bind_readers/bind_writers
This commit renames the readers_bind and writers_bind module parameters to bind_readers and bind_writers, respectively. This provides added clarity via the imperative mode and better organizes the documentation. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Paul E. McKenney
|
b1326d766b |
doc: Catch-up update for locktorture module parameters
This commit documents recently added locktorture module parameters. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Joel Fernandes <joel@joelfernandes.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Paul E. McKenney
|
7f993623e9 |
locktorture: Add call_rcu_chains module parameter
When running locktorture on large systems, there will normally be enough RCU activity to ensure that there is a grace period in flight at all times. However, on smaller systems, RCU might well be idle the majority of the time. This situation can be inconvenient in cases where the RCU CPU stall warning is part of the debugging process. This commit therefore adds an call_rcu_chains module parameter to locktorture, allowing the user to specify the desired number of self-propagating call_rcu() chains. For good measure, immediately before invoking call_rcu(), the self-propagating RCU callback invokes start_poll_synchronize_rcu() to force the immediate start of a grace period, with the call_rcu() forcing another to start shortly thereafter. Booting with locktorture.call_rcu_chains=2 increases the probability of a stuck locking primitive resulting in an RCU CPU stall warning from about 25% to nearly 100%. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Tudor Ambarus
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5ee1a43047 |
docs: pstore-blk.rst: fix typo, s/console/ftrace
The author referred to the ftrace log, but mentioned console log instead. Fix the typo. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> Link: https://lore.kernel.org/r/20230914133729.1956907-2-tudor.ambarus@linaro.org Signed-off-by: Kees Cook <keescook@chromium.org> |
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Tudor Ambarus
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4bc028de97 |
docs: pstore-blk.rst: use "about" as a preposition after "care"
Reword the sentence to "care about the {oops/panic, pmsg, console} log."
Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20230914133729.1956907-1-tudor.ambarus@linaro.org
Signed-off-by: Kees Cook <keescook@chromium.org>
|
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Mikko Rapeli
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e4c0138ab3 |
Documentation efi-stub.rst: fix arm64 EFI source location
arch/arm64/kernel/efi-entry.S has been moved to drivers/firmware/efi/libstub/arm64-entry.S by commit v6.1-rc4-6-g4ef806096bdb and to drivers/firmware/efi/libstub/arm64.c by commit v6.2-rc3-6-g617861703830 Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20230904113214.4147021-1-mikko.rapeli@linaro.org> |
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Wang Jinchao
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d25e92d2ae |
memory-hotplug.rst: fix wrong /sys/device/ path
Actually, it should be /sys/devices/ Signed-off-by: Wang Jinchao <wangjinchao@xfusion.com> Reviewed-by: David Hildenbrand <david@redhat.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <ZQz1NUATBMOb3RT+@fedora> |
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Tiezhu Yang
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ac0691c75a |
bpf, docs: Add loongarch64 as arch supporting BPF JIT
As BPF JIT support for loongarch64 was added about one year ago
with commit
|
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Waiman Long
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efdf7532bd |
cgroup/cpuset: Documentation update for partition
This patch updates the cgroup-v2.rst file to include information about the new "cpuset.cpus.exclusive" and "cpuset.cpus.excluisve.effective" control files as well as the new remote partition type. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Nikolay Borisov
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a11e097504 |
x86: Make IA32_EMULATION boot time configurable
Distributions would like to reduce their attack surface as much as possible but at the same time they'd want to retain flexibility to cater to a variety of legacy software. This stems from the conjecture that compat layer is likely rarely tested and could have latent security bugs. Ideally distributions will set their default policy and also give users the ability to override it as appropriate. To enable this use case, introduce CONFIG_IA32_EMULATION_DEFAULT_DISABLED compile time option, which controls whether 32bit processes/syscalls should be allowed or not. This option is aimed mainly at distributions to set their preferred default behavior in their kernels. To allow users to override the distro's policy, introduce the 'ia32_emulation' parameter which allows overriding CONFIG_IA32_EMULATION_DEFAULT_DISABLED state at boot time. Signed-off-by: Nikolay Borisov <nik.borisov@suse.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20230623111409.3047467-7-nik.borisov@suse.com |
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Paul E. McKenney
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16128b1f8c |
rcu: Add sysfs to provide throttled access to rcu_barrier()
When running a series of stress tests all making heavy use of RCU, it is all too possible to OOM the system when the prior test's RCU callbacks don't get invoked until after the subsequent test starts. One way of handling this is just a timed wait, but this fails when a given CPU has so many callbacks queued that they take longer to invoke than allowed for by that timed wait. This commit therefore adds an rcutree.do_rcu_barrier module parameter that is accessible from sysfs. Writing one of the many synonyms for boolean "true" will cause an rcu_barrier() to be invoked, but will guarantee that no more than one rcu_barrier() will be invoked per sixteenth of a second via this mechanism. The flip side is that a given request might wait a second or three longer than absolutely necessary, but only when there are multiple uses of rcutree.do_rcu_barrier within a one-second time interval. This commit unnecessarily serializes the rcu_barrier() machinery, given that serialization is already provided by procfs. This has the advantage of allowing throttled rcu_barrier() from other sources within the kernel. Reported-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Paul E. McKenney
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8a4c0c90f2 |
doc: Add refscale.lookup_instances to kernel-parameters.txt
This commit adds refscale.lookup_instances to kernel-parameters.txt. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> |
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Ard Biesheuvel
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944834901a |
Documentation: Drop or replace remaining mentions of IA64
Drop or update mentions of IA64, as appropriate. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
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Linus Torvalds
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535a265d7f |
perf tools changes for v6.6:
perf tools maintainership:
- Add git information for perf-tools and perf-tools-next trees/branches to the
MAINTAINERS file. That is where development now takes place and myself and
Namhyung Kim have write access, more people to come as we emulate other
maintainer groups.
perf record:
- Record kernel data maps when 'perf record --data' is used, so that global variables can
be resolved and used in tools that do data profiling.
perf trace:
- Remove the old, experimental support for BPF events in which a .c file was passed as
an event: "perf trace -e hello.c" to then get compiled and loaded.
The only known usage for that, that shipped with the kernel as an example for such events,
augmented the raw_syscalls tracepoints and was converted to a libbpf skeleton, reusing all
the user space components and the BPF code connected to the syscalls.
In the end just the way to glue the BPF part and the user space type beautifiers changed,
now being performed by libbpf skeletons.
The next step is to use BTF to do pretty printing of all syscall types, as discussed with
Alan Maguire and others.
Now, on a perf built with BUILD_BPF_SKEL=1 we get most if not all path/filenames/strings,
some of the networking data structures, perf_event_attr, etc, i.e. systemwide tracing of
nanosleep calls and perf_event_open syscalls while 'perf stat' runs 'sleep' for 5 seconds:
# perf trace -a -e *nanosleep,perf* perf stat -e cycles,instructions sleep 5
0.000 ( 9.034 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0 (PERF_COUNT_HW_CPU_CYCLES), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 3
9.039 ( 0.006 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0x1 (PERF_COUNT_HW_INSTRUCTIONS), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf-exec), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 4
? ( ): gpm/991 ... [continued]: clock_nanosleep()) = 0
10.133 ( ): sleep/327642 clock_nanosleep(rqtp: { .tv_sec: 5, .tv_nsec: 0 }, rmtp: 0x7ffd36f83ed0) ...
? ( ): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
30.276 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
223.215 (1000.430 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
30.276 (2000.394 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
1230.814 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
1230.814 (1000.404 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
2030.886 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
2237.709 (1000.153 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
? ( ): crond/1172 ... [continued]: clock_nanosleep()) = 0
3242.699 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
2030.886 (2000.385 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
3728.078 ( ): crond/1172 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffe0971dcf0) ...
3242.699 (1000.158 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
4031.409 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
10.133 (5000.375 ms): sleep/327642 ... [continued]: clock_nanosleep()) = 0
Performance counter stats for 'sleep 5':
2,617,347 cycles
1,855,997 instructions # 0.71 insn per cycle
5.002282128 seconds time elapsed
0.000855000 seconds user
0.000852000 seconds sys
#
perf annotate:
- Building with binutils' libopcode now is opt-in (BUILD_NONDISTRO=1) for
licensing reasons, and we missed a build test on tools/perf/tests makefile.
Since we now default to NDEBUG=1, we ended up segfaulting when building with
BUILD_NONDISTRO=1 because a needed initialization routine was being "error
checked" via an assert.
Fix it by explicitly checking the result and aborting instead if it fails.
We better back propagate the error, but at least 'perf annotate' on samples
collected for a BPF program is back working when perf is built with
BUILD_NONDISTRO=1.
perf report/top:
- Add back TUI hierarchy mode header, that is seen when using 'perf report/top --hierarchy'.
- Fix the number of entries for 'e' key in the TUI that was preventing navigation of
lines when expanding an entry.
perf report/script:
- Support cross platform register handling, allowing a perf.data file collected
on one architecture to have registers sampled correctly displayed when
analysis tools such as 'perf report' and 'perf script' are used on a different
architecture.
- Fix handling of event attributes in pipe mode, i.e. when one uses:
perf record -o - | perf report -i -
When no perf.data files are used.
- Handle files generated via pipe mode with a version of perf and then read
also via pipe mode with a different version of perf, where the event attr
record may have changed, use the record size field to properly support this
version mismatch.
perf probe:
- Accessing global variables from uprobes isn't supported, make the error
message state that instead of stating that some minimal kernel version is
needed to have that feature. This seems just a tool limitation, the kernel
probably has all that is needed.
perf tests:
- Fix a reference count related leak in the dlfilter v0 API where the result
of a thread__find_symbol_fb() is not matched with an addr_location__exit()
to drop the reference counts of the resolved components (machine, thread, map,
symbol, etc). Add a dlfilter test to make sure that doesn't regresses.
- Lots of fixes for the 'perf test' written in shell script related to problems
found with the shellcheck utility.
- Fixes for 'perf test' shell scripts testing features enabled when perf is
built with BUILD_BPF_SKEL=1, such as 'perf stat' bpf counters.
- Add perf record sample filtering test, things like the following example, that gets
implemented as a BPF filter attached to the event:
# perf record -e task-clock -c 10000 --filter 'ip < 0xffffffff00000000'
- Improve the way the task_analyzer test checks if libtraceevent is linked,
using 'perf version --build-options' instead of the more expensinve
'perf record -e "sched:sched_switch"'.
- Add support for riscv in the mmap-basic test. (This went as well via the RiscV tree, same contents).
libperf:
- Implement riscv mmap support (This went as well via the RiscV tree, same contents).
perf script:
- New tool that converts perf.data files to the firefox profiler format so that one can use
the visualizer at https://profiler.firefox.com/. Done by Anup Sharma as part of this year's
Google Summer of Code.
One can generate the output and upload it to the web interface but Anup also automated
everything:
perf script gecko -F 99 -a sleep 60
- Support syscall name parsing on arm64.
- Print "cgroup" field on the same line as "comm".
perf bench:
- Add new 'uprobe' benchmark to measure the overhead of uprobes with/without
BPF programs attached to it.
- breakpoints are not available on power9, skip that test.
perf stat:
- Add #num_cpus_online literal to be used in 'perf stat' metrics, and add this extra
'perf test' check that exemplifies its purpose:
TEST_ASSERT_VAL("#num_cpus_online",
expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0);
TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online);
Miscellaneous:
- Improve tool startup time by lazily reading PMU, JSON, sysfs data.
- Improve error reporting in the parsing of events, passing YYLTYPE to error routines,
so that the output can show were the parsing error was found.
- Add 'perf test' entries to check the parsing of events improvements.
- Fix various leak for things detected by -fsanitize=address, mostly things that would
be freed at tool exit, including:
- Free evsel->filter on the destructor.
- Allow tools to register a thread->priv destructor and use it in 'perf trace'.
- Free evsel->priv in 'perf trace'.
- Free string returned by synthesize_perf_probe_point() when the caller fails
to do all it needs.
- Adjust various compiler options to not consider errors some warnings when
building with broken headers found in things like python, flex, bison, as we
otherwise build with -Werror. Some for gcc, some for clang, some for some
specific version of those, some for some specific version of flex or bison, or
some specific combination of these components, bah.
- Allow customization of clang options for BPF target, this helps building on
gentoo where there are other oddities where BPF targets gets passed some compiler
options intended for the native build, so building with WERROR=0 helps while
these oddities are fixed.
- Dont pass ERR_PTR() values to perf_session__delete() in 'perf top' and 'perf lock',
fixing some segfaults when handling some odd failures.
- Add LTO build option.
- Fix format of unordered lists in the perf docs (tools/perf/Documentation).
- Overhaul the bison files, using constructs such as YYNOMEM.
- Remove unused tokens from the bison .y files.
- Add more comments to various structs.
- A few LoongArch enablement patches.
Vendor events (JSON):
- Add JSON metrics for Yitian 710 DDR (aarch64). Things like:
EventName, BriefDescription
visible_window_limit_reached_rd, "At least one entry in read queue reaches the visible window limit.",
visible_window_limit_reached_wr, "At least one entry in write queue reaches the visible window limit.",
op_is_dqsosc_mpc , "A DQS Oscillator MPC command to DRAM.",
op_is_dqsosc_mrr , "A DQS Oscillator MRR command to DRAM.",
op_is_tcr_mrr , "A Temperature Compensated Refresh(TCR) MRR command to DRAM.",
- Add AmpereOne metrics (aarch64).
- Update N2 and V2 metrics (aarch64) and events using Arm telemetry repo.
- Update scale units and descriptions of common topdown metrics on aarch64. Things like:
- "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)",
- "BriefDescription": "Frontend bound L1 topdown metric",
+ "MetricExpr": "100 * (stall_slot_frontend / (#slots * cpu_cycles))",
+ "BriefDescription": "This metric is the percentage of total slots that were stalled due to resource constraints in the frontend of the processor.",
- Update events for intel: meteorlake to 1.04, sapphirerapids to 1.15, Icelake+ metric constraints.
- Update files for the power10 platform.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-for-v6.6-1-2023-09-05' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Arnaldo Carvalho de Melo:
"perf tools maintainership:
- Add git information for perf-tools and perf-tools-next trees and
branches to the MAINTAINERS file. That is where development now
takes place and myself and Namhyung Kim have write access, more
people to come as we emulate other maintainer groups.
perf record:
- Record kernel data maps when 'perf record --data' is used, so that
global variables can be resolved and used in tools that do data
profiling.
perf trace:
- Remove the old, experimental support for BPF events in which a .c
file was passed as an event: "perf trace -e hello.c" to then get
compiled and loaded.
The only known usage for that, that shipped with the kernel as an
example for such events, augmented the raw_syscalls tracepoints and
was converted to a libbpf skeleton, reusing all the user space
components and the BPF code connected to the syscalls.
In the end just the way to glue the BPF part and the user space
type beautifiers changed, now being performed by libbpf skeletons.
The next step is to use BTF to do pretty printing of all syscall
types, as discussed with Alan Maguire and others.
Now, on a perf built with BUILD_BPF_SKEL=1 we get most if not all
path/filenames/strings, some of the networking data structures,
perf_event_attr, etc, i.e. systemwide tracing of nanosleep calls
and perf_event_open syscalls while 'perf stat' runs 'sleep' for 5
seconds:
# perf trace -a -e *nanosleep,perf* perf stat -e cycles,instructions sleep 5
0.000 ( 9.034 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0 (PERF_COUNT_HW_CPU_CYCLES), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 3
9.039 ( 0.006 ms): perf/327641 perf_event_open(attr_uptr: { type: 0 (PERF_TYPE_HARDWARE), size: 136, config: 0x1 (PERF_COUNT_HW_INSTRUCTIONS), sample_type: IDENTIFIER, read_format: TOTAL_TIME_ENABLED|TOTAL_TIME_RUNNING, disabled: 1, inherit: 1, enable_on_exec: 1, exclude_guest: 1 }, pid: 327642 (perf-exec), cpu: -1, group_fd: -1, flags: FD_CLOEXEC) = 4
? ( ): gpm/991 ... [continued]: clock_nanosleep()) = 0
10.133 ( ): sleep/327642 clock_nanosleep(rqtp: { .tv_sec: 5, .tv_nsec: 0 }, rmtp: 0x7ffd36f83ed0) ...
? ( ): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
30.276 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
223.215 (1000.430 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
30.276 (2000.394 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
1230.814 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
1230.814 (1000.404 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
2030.886 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
2237.709 (1000.153 ms): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) = 0
? ( ): crond/1172 ... [continued]: clock_nanosleep()) = 0
3242.699 ( ): pool-gsd-smart/3051 clock_nanosleep(rqtp: { .tv_sec: 1, .tv_nsec: 0 }, rmtp: 0x7f6e7fffec90) ...
2030.886 (2000.385 ms): gpm/991 ... [continued]: clock_nanosleep()) = 0
3728.078 ( ): crond/1172 clock_nanosleep(rqtp: { .tv_sec: 60, .tv_nsec: 0 }, rmtp: 0x7ffe0971dcf0) ...
3242.699 (1000.158 ms): pool-gsd-smart/3051 ... [continued]: clock_nanosleep()) = 0
4031.409 ( ): gpm/991 clock_nanosleep(rqtp: { .tv_sec: 2, .tv_nsec: 0 }, rmtp: 0x7ffcc6f73710) ...
10.133 (5000.375 ms): sleep/327642 ... [continued]: clock_nanosleep()) = 0
Performance counter stats for 'sleep 5':
2,617,347 cycles
1,855,997 instructions # 0.71 insn per cycle
5.002282128 seconds time elapsed
0.000855000 seconds user
0.000852000 seconds sys
perf annotate:
- Building with binutils' libopcode now is opt-in (BUILD_NONDISTRO=1)
for licensing reasons, and we missed a build test on
tools/perf/tests makefile.
Since we now default to NDEBUG=1, we ended up segfaulting when
building with BUILD_NONDISTRO=1 because a needed initialization
routine was being "error checked" via an assert.
Fix it by explicitly checking the result and aborting instead if it
fails.
We better back propagate the error, but at least 'perf annotate' on
samples collected for a BPF program is back working when perf is
built with BUILD_NONDISTRO=1.
perf report/top:
- Add back TUI hierarchy mode header, that is seen when using 'perf
report/top --hierarchy'.
- Fix the number of entries for 'e' key in the TUI that was
preventing navigation of lines when expanding an entry.
perf report/script:
- Support cross platform register handling, allowing a perf.data file
collected on one architecture to have registers sampled correctly
displayed when analysis tools such as 'perf report' and 'perf
script' are used on a different architecture.
- Fix handling of event attributes in pipe mode, i.e. when one uses:
perf record -o - | perf report -i -
When no perf.data files are used.
- Handle files generated via pipe mode with a version of perf and
then read also via pipe mode with a different version of perf,
where the event attr record may have changed, use the record size
field to properly support this version mismatch.
perf probe:
- Accessing global variables from uprobes isn't supported, make the
error message state that instead of stating that some minimal
kernel version is needed to have that feature. This seems just a
tool limitation, the kernel probably has all that is needed.
perf tests:
- Fix a reference count related leak in the dlfilter v0 API where the
result of a thread__find_symbol_fb() is not matched with an
addr_location__exit() to drop the reference counts of the resolved
components (machine, thread, map, symbol, etc). Add a dlfilter test
to make sure that doesn't regresses.
- Lots of fixes for the 'perf test' written in shell script related
to problems found with the shellcheck utility.
- Fixes for 'perf test' shell scripts testing features enabled when
perf is built with BUILD_BPF_SKEL=1, such as 'perf stat' bpf
counters.
- Add perf record sample filtering test, things like the following
example, that gets implemented as a BPF filter attached to the
event:
# perf record -e task-clock -c 10000 --filter 'ip < 0xffffffff00000000'
- Improve the way the task_analyzer test checks if libtraceevent is
linked, using 'perf version --build-options' instead of the more
expensinve 'perf record -e "sched:sched_switch"'.
- Add support for riscv in the mmap-basic test. (This went as well
via the RiscV tree, same contents).
libperf:
- Implement riscv mmap support (This went as well via the RiscV tree,
same contents).
perf script:
- New tool that converts perf.data files to the firefox profiler
format so that one can use the visualizer at
https://profiler.firefox.com/. Done by Anup Sharma as part of this
year's Google Summer of Code.
One can generate the output and upload it to the web interface but
Anup also automated everything:
perf script gecko -F 99 -a sleep 60
- Support syscall name parsing on arm64.
- Print "cgroup" field on the same line as "comm".
perf bench:
- Add new 'uprobe' benchmark to measure the overhead of uprobes
with/without BPF programs attached to it.
- breakpoints are not available on power9, skip that test.
perf stat:
- Add #num_cpus_online literal to be used in 'perf stat' metrics, and
add this extra 'perf test' check that exemplifies its purpose:
TEST_ASSERT_VAL("#num_cpus_online",
expr__parse(&num_cpus_online, ctx, "#num_cpus_online") == 0);
TEST_ASSERT_VAL("#num_cpus", expr__parse(&num_cpus, ctx, "#num_cpus") == 0);
TEST_ASSERT_VAL("#num_cpus >= #num_cpus_online", num_cpus >= num_cpus_online);
Miscellaneous:
- Improve tool startup time by lazily reading PMU, JSON, sysfs data.
- Improve error reporting in the parsing of events, passing YYLTYPE
to error routines, so that the output can show were the parsing
error was found.
- Add 'perf test' entries to check the parsing of events
improvements.
- Fix various leak for things detected by -fsanitize=address, mostly
things that would be freed at tool exit, including:
- Free evsel->filter on the destructor.
- Allow tools to register a thread->priv destructor and use it in
'perf trace'.
- Free evsel->priv in 'perf trace'.
- Free string returned by synthesize_perf_probe_point() when the
caller fails to do all it needs.
- Adjust various compiler options to not consider errors some
warnings when building with broken headers found in things like
python, flex, bison, as we otherwise build with -Werror. Some for
gcc, some for clang, some for some specific version of those, some
for some specific version of flex or bison, or some specific
combination of these components, bah.
- Allow customization of clang options for BPF target, this helps
building on gentoo where there are other oddities where BPF targets
gets passed some compiler options intended for the native build, so
building with WERROR=0 helps while these oddities are fixed.
- Dont pass ERR_PTR() values to perf_session__delete() in 'perf top'
and 'perf lock', fixing some segfaults when handling some odd
failures.
- Add LTO build option.
- Fix format of unordered lists in the perf docs
(tools/perf/Documentation)
- Overhaul the bison files, using constructs such as YYNOMEM.
- Remove unused tokens from the bison .y files.
- Add more comments to various structs.
- A few LoongArch enablement patches.
Vendor events (JSON):
- Add JSON metrics for Yitian 710 DDR (aarch64). Things like:
EventName, BriefDescription
visible_window_limit_reached_rd, "At least one entry in read queue reaches the visible window limit.",
visible_window_limit_reached_wr, "At least one entry in write queue reaches the visible window limit.",
op_is_dqsosc_mpc , "A DQS Oscillator MPC command to DRAM.",
op_is_dqsosc_mrr , "A DQS Oscillator MRR command to DRAM.",
op_is_tcr_mrr , "A Temperature Compensated Refresh(TCR) MRR command to DRAM.",
- Add AmpereOne metrics (aarch64).
- Update N2 and V2 metrics (aarch64) and events using Arm telemetry
repo.
- Update scale units and descriptions of common topdown metrics on
aarch64. Things like:
- "MetricExpr": "stall_slot_frontend / (#slots * cpu_cycles)",
- "BriefDescription": "Frontend bound L1 topdown metric",
+ "MetricExpr": "100 * (stall_slot_frontend / (#slots * cpu_cycles))",
+ "BriefDescription": "This metric is the percentage of total slots that were stalled due to resource constraints in the frontend of the processor.",
- Update events for intel: meteorlake to 1.04, sapphirerapids to
1.15, Icelake+ metric constraints.
- Update files for the power10 platform"
* tag 'perf-tools-for-v6.6-1-2023-09-05' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (217 commits)
perf parse-events: Fix driver config term
perf parse-events: Fixes relating to no_value terms
perf parse-events: Fix propagation of term's no_value when cloning
perf parse-events: Name the two term enums
perf list: Don't print Unit for "default_core"
perf vendor events intel: Fix modifier in tma_info_system_mem_parallel_reads for skylake
perf dlfilter: Avoid leak in v0 API test use of resolve_address()
perf metric: Add #num_cpus_online literal
perf pmu: Remove str from perf_pmu_alias
perf parse-events: Make common term list to strbuf helper
perf parse-events: Minor help message improvements
perf pmu: Avoid uninitialized use of alias->str
perf jevents: Use "default_core" for events with no Unit
perf test stat_bpf_counters_cgrp: Enhance perf stat cgroup BPF counter test
perf test shell stat_bpf_counters: Fix test on Intel
perf test shell record_bpf_filter: Skip 6.2 kernel
libperf: Get rid of attr.id field
perf tools: Convert to perf_record_header_attr_id()
libperf: Add perf_record_header_attr_id()
perf tools: Handle old data in PERF_RECORD_ATTR
...
|
||
|
Linus Torvalds
|
7ccc3ebf0c |
io_uring-6.6-2023-09-08
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Merge tag 'io_uring-6.6-2023-09-08' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"A few fixes that should go into the 6.6-rc merge window:
- Fix for a regression this merge window caused by the SQPOLL
affinity patch, where we can race with SQPOLL thread shutdown and
cause an oops when trying to set affinity (Gabriel)
- Fix for a regression this merge window where fdinfo reading with
for a ring setup with IORING_SETUP_NO_SQARRAY will attempt to
deference the non-existing SQ ring array (me)
- Add the patch that allows more finegrained control over who can use
io_uring (Matteo)
- Locking fix for a regression added this merge window for IOPOLL
overflow (Pavel)
- IOPOLL fix for stable, breaking our loop if helper threads are
exiting (Pavel)
Also had a fix for unreaped iopoll requests from io-wq from Ming, but
we found an issue with that and hence it got reverted. Will get this
sorted for a future rc"
* tag 'io_uring-6.6-2023-09-08' of git://git.kernel.dk/linux:
Revert "io_uring: fix IO hang in io_wq_put_and_exit from do_exit()"
io_uring: fix unprotected iopoll overflow
io_uring: break out of iowq iopoll on teardown
io_uring: add a sysctl to disable io_uring system-wide
io_uring/fdinfo: only print ->sq_array[] if it's there
io_uring: fix IO hang in io_wq_put_and_exit from do_exit()
io_uring: Don't set affinity on a dying sqpoll thread
|
||
|
Matteo Rizzo
|
76d3ccecfa |
io_uring: add a sysctl to disable io_uring system-wide
Introduce a new sysctl (io_uring_disabled) which can be either 0, 1, or 2. When 0 (the default), all processes are allowed to create io_uring instances, which is the current behavior. When 1, io_uring creation is disabled (io_uring_setup() will fail with -EPERM) for unprivileged processes not in the kernel.io_uring_group group. When 2, calls to io_uring_setup() fail with -EPERM regardless of privilege. Signed-off-by: Matteo Rizzo <matteorizzo@google.com> [JEM: modified to add io_uring_group] Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Link: https://lore.kernel.org/r/x49y1i42j1z.fsf@segfault.boston.devel.redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk> |
||
|
Linus Torvalds
|
bd30fe6a7d |
workqueue: Changes for v6.6
* Unbound workqueues now support more flexible affinity scopes. The default behavior is to soft-affine according to last level cache boundaries. A work item queued from a given LLC is executed by a worker running on the same LLC but the worker may be moved across cache boundaries as the scheduler sees fit. On machines which multiple L3 caches, which are becoming more popular along with chiplet designs, this improves cache locality while not harming work conservation too much. Unbound workqueues are now also a lot more flexible in terms of execution affinity. Differeing levels of affinity scopes are supported and both the default and per-workqueue affinity settings can be modified dynamically. This should help working around amny of sub-optimal behaviors observed recently with asymmetric ARM CPUs. This involved signficant restructuring of workqueue code. Nothing was reported yet but there's some risk of subtle regressions. Should keep an eye out. * Rescuer workers now has more identifiable comms. * workqueue.unbound_cpus added so that CPUs which can be used by workqueue can be constrained early during boot. * Now that all the in-tree users have been flushed out, trigger warning if system-wide workqueues are flushed. * One pull commit from for-6.5-fixes to avoid cascading conflicts in the affinity scope patchset. -----BEGIN PGP SIGNATURE----- iIQEABYIACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZPERlQ4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGVqQAPwIOy9tWY5jFAmMuIyH6wV50hbmfxCc2n5xhQNr 5HoyGgEA8lw1W7afDCIPiQVA7AYsu8dhwuNSOcRCJxhrrn4XsA0= =g/Uu -----END PGP SIGNATURE----- Merge tag 'wq-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue updates from Tejun Heo: - Unbound workqueues now support more flexible affinity scopes. The default behavior is to soft-affine according to last level cache boundaries. A work item queued from a given LLC is executed by a worker running on the same LLC but the worker may be moved across cache boundaries as the scheduler sees fit. On machines which multiple L3 caches, which are becoming more popular along with chiplet designs, this improves cache locality while not harming work conservation too much. Unbound workqueues are now also a lot more flexible in terms of execution affinity. Differeing levels of affinity scopes are supported and both the default and per-workqueue affinity settings can be modified dynamically. This should help working around amny of sub-optimal behaviors observed recently with asymmetric ARM CPUs. This involved signficant restructuring of workqueue code. Nothing was reported yet but there's some risk of subtle regressions. Should keep an eye out. - Rescuer workers now has more identifiable comms. - workqueue.unbound_cpus added so that CPUs which can be used by workqueue can be constrained early during boot. - Now that all the in-tree users have been flushed out, trigger warning if system-wide workqueues are flushed. * tag 'wq-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (31 commits) workqueue: fix data race with the pwq->stats[] increment workqueue: Rename rescuer kworker workqueue: Make default affinity_scope dynamically updatable workqueue: Add "Affinity Scopes and Performance" section to documentation workqueue: Implement non-strict affinity scope for unbound workqueues workqueue: Add workqueue_attrs->__pod_cpumask workqueue: Factor out need_more_worker() check and worker wake-up workqueue: Factor out work to worker assignment and collision handling workqueue: Add multiple affinity scopes and interface to select them workqueue: Modularize wq_pod_type initialization workqueue: Add tools/workqueue/wq_dump.py which prints out workqueue configuration workqueue: Generalize unbound CPU pods workqueue: Factor out clearing of workqueue-only attrs fields workqueue: Factor out actual cpumask calculation to reduce subtlety in wq_update_pod() workqueue: Initialize unbound CPU pods later in the boot workqueue: Move wq_pod_init() below workqueue_init() workqueue: Rename NUMA related names to use pod instead workqueue: Rename workqueue_attrs->no_numa to ->ordered workqueue: Make unbound workqueues to use per-cpu pool_workqueues workqueue: Call wq_update_unbound_numa() on all CPUs in NUMA node on CPU hotplug ... |
||
|
Linus Torvalds
|
7716f383a5 |
cgroup: Changes for v6.6
* Per-cpu cpu usage stats are now tracked. This currently isn't printed out
in the cgroupfs interface and can only be accessed through e.g. BPF.
Should decide on a not-too-ugly way to show per-cpu stats in cgroupfs.
* cpuset received some cleanups and prepatory patches for the pending
cpus.exclusive patchset which will allow cpuset partitions to be created
below non-partition parents, which should ease the management of partition
cpusets.
* A lot of code and documentation cleanup patches.
* tools/testing/selftests/cgroup/test_cpuset.c is added. This causes trivial
conflicts in .gitignore and Makefile under the directory against
|
||
|
Linus Torvalds
|
307d59039f |
media updates for v6.6-rc1
-----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEE+QmuaPwR3wnBdVwACF8+vY7k4RUFAmTxzmEACgkQCF8+vY7k 4RWP6A/+Ljbwdoq92qOcaKAG2h2HzJa/H+xKMQwqIYjpbXnjNuFD2S9FCRfhNa9b Pt4K2g4lH2IJvYiJ3qhBbMxV8GPmovnHFX5LvyTFpRmrtZBAKp+TPXpbPt+a2/WL IPfQ0I52/c/JNqhm3fnmKgpXorp0wHYNbfY/LXztslimZj95+t0qjW62BoBmsJ3s hR+j/Xlgnd+9gld1OqX6OndH3mpeqDzBl4KZatQzw6yuIo8SK0ASEpu/vzgZoVy+ WiBtbzMuta2ZghnEHbnCkurwBSU/oLXhBmXsgp+Zdy0gglSk1RBdxM+3O65OVQt3 CCWSXMS0vGOk6JiogMpcPzO5piaUePcHEIjgAaaepTOzbKaf6PbEd9dj73LT9qcx 4TYFtGaDDhyDU4nzKTngfNiwmYrL1h+NuG119ZLHfrdH3MT7itIaydwFJRqLC+6D 7K6/1H2LKq25i+hRp5ZK2pgv0dAJw/nSdwFGFVgWM3Tuyt5dGdL/4SlZO4nIFKF2 pPWJUTJJP/0t9GUtwWmCh1fdgDr0A6Zg5M2OduyhC/YkqyLuD/02Bb4aR8hzloPj pym+94/PFaT5S7zvKywpvyIc8U+87/M2tw+mAPN2r3i4c0RFJa7CkyKqlKTKFw13 jw7NLLlrRbZ3a3zlhpJVqGLKgF2FlWudLUo4Y4kddWvxTMbwYXs= =yuz5 -----END PGP SIGNATURE----- Merge tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - new i2c drivers: ds90ub913, ds90ub953, ds90ub960, dw9719, ds90ub913 - new Intel IVSC MEI drivers - some Mediatek platform drivers were moved to a common location - Intel atomisp2 driver is now working with the main ov2680 driver. Due to that, the atomisp2 ov2680 staging one was removed - the bttv driver was finally converted to videobuf2 framework. This was the last one upstream using videobuf version 1 core. We'll likely remove the old videobuf framework on 6.7 - lots of improvements at atomisp driver: it now works with normal I2C sensors. Several compile-mode dependecies to select between ISP2400 and ISP2401 are now solved in runtime - a new ipu-bridge logic was added to work with IVSC MEI drivers - venus driver gained better support for new VPU versions - the v4l core async framework has gained lots of improvements and cleanups - lots of other cleanups, improvements and driver fixes * tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (358 commits) media: ivsc: Add ACPI dependency media: bttv: convert to vb2 media: bttv: use audio defaults for winfast2000 media: bttv: refactor bttv_set_dma() media: bttv: move vbi_skip/vbi_count out of buffer media: bttv: remove crop info from bttv_buffer media: bttv: remove tvnorm field from bttv_buffer media: bttv: remove format field from bttv_buffer media: bttv: move do_crop flag out of bttv_fh media: bttv: copy vbi_fmt from bttv_fh media: bttv: copy vid fmt/width/height from fh media: bttv: radio use v4l2_fh instead of bttv_fh media: bttv: replace BUG with WARN_ON media: bttv: use video_drvdata to get bttv media: i2c: rdacm21: Fix uninitialized value media: coda: Remove duplicated include media: vivid: fix the racy dev->radio_tx_rds_owner media: i2c: ccs: Check rules is non-NULL media: i2c: ds90ub960: Fix PLL config for 1200 MHz CSI rate media: i2c: ds90ub953: Fix use of uninitialized variables ... |
||
|
Linus Torvalds
|
1c9f8dff62 |
Char/Misc driver changes for 6.6-rc1
Here is the big set of char/misc and other small driver subsystem changes for 6.6-rc1. Stuff all over the place here, lots of driver updates and changes and new additions. Short summary is: - new IIO drivers and updates - Interconnect driver updates - fpga driver updates and additions - fsi driver updates - mei driver updates - coresight driver updates - nvmem driver updates - counter driver updates - lots of smaller misc and char driver updates and additions All of these have been in linux-next for a long time with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZPH64g8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ynr2QCfd3RKeR+WnGzyEOFhksl30UJJhiIAoNZtYT5+ t9KG0iMDXRuTsOqeEQbd =tVnk -----END PGP SIGNATURE----- Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big set of char/misc and other small driver subsystem changes for 6.6-rc1. Stuff all over the place here, lots of driver updates and changes and new additions. Short summary is: - new IIO drivers and updates - Interconnect driver updates - fpga driver updates and additions - fsi driver updates - mei driver updates - coresight driver updates - nvmem driver updates - counter driver updates - lots of smaller misc and char driver updates and additions All of these have been in linux-next for a long time with no reported problems" * tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (267 commits) nvmem: core: Notify when a new layout is registered nvmem: core: Do not open-code existing functions nvmem: core: Return NULL when no nvmem layout is found nvmem: core: Create all cells before adding the nvmem device nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper nvmem: sec-qfprom: Add Qualcomm secure QFPROM support dt-bindings: nvmem: sec-qfprom: Add bindings for secure qfprom dt-bindings: nvmem: Add compatible for QCM2290 nvmem: Kconfig: Fix typo "drive" -> "driver" nvmem: Explicitly include correct DT includes nvmem: add new NXP QorIQ eFuse driver dt-bindings: nvmem: Add t1023-sfp efuse support dt-bindings: nvmem: qfprom: Add compatible for MSM8226 nvmem: uniphier: Use devm_platform_get_and_ioremap_resource() nvmem: qfprom: do some cleanup nvmem: stm32-romem: Use devm_platform_get_and_ioremap_resource() nvmem: rockchip-efuse: Use devm_platform_get_and_ioremap_resource() nvmem: meson-mx-efuse: Convert to devm_platform_ioremap_resource() nvmem: lpc18xx_otp: Convert to devm_platform_ioremap_resource() nvmem: brcm_nvram: Use devm_platform_get_and_ioremap_resource() ... |
||
|
Linus Torvalds
|
8e1e49550d |
TTY/Serial driver changes for 6.6-rc1
Here is the big set of tty and serial driver changes for 6.6-rc1.
Lots of cleanups in here this cycle, and some driver updates. Short
summary is:
- Jiri's continued work to make the tty code and apis be a bit more
sane with regards to modern kernel coding style and types
- cpm_uart driver updates
- n_gsm updates and fixes
- meson driver updates
- sc16is7xx driver updates
- 8250 driver updates for different hardware types
- qcom-geni driver fixes
- tegra serial driver change
- stm32 driver updates
- synclink_gt driver cleanups
- tty structure size reduction
All of these have been in linux-next this week with no reported issues.
The last bit of cleanups from Jiri and the tty structure size reduction
came in last week, a bit late but as they were just style changes and
size reductions, I figured they should get into this merge cycle so that
others can work on top of them with no merge conflicts.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the big set of tty and serial driver changes for 6.6-rc1.
Lots of cleanups in here this cycle, and some driver updates. Short
summary is:
- Jiri's continued work to make the tty code and apis be a bit more
sane with regards to modern kernel coding style and types
- cpm_uart driver updates
- n_gsm updates and fixes
- meson driver updates
- sc16is7xx driver updates
- 8250 driver updates for different hardware types
- qcom-geni driver fixes
- tegra serial driver change
- stm32 driver updates
- synclink_gt driver cleanups
- tty structure size reduction
All of these have been in linux-next this week with no reported
issues. The last bit of cleanups from Jiri and the tty structure size
reduction came in last week, a bit late but as they were just style
changes and size reductions, I figured they should get into this merge
cycle so that others can work on top of them with no merge conflicts"
* tag 'tty-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (199 commits)
tty: shrink the size of struct tty_struct by 40 bytes
tty: n_tty: deduplicate copy code in n_tty_receive_buf_real_raw()
tty: n_tty: extract ECHO_OP processing to a separate function
tty: n_tty: unify counts to size_t
tty: n_tty: use u8 for chars and flags
tty: n_tty: simplify chars_in_buffer()
tty: n_tty: remove unsigned char casts from character constants
tty: n_tty: move newline handling to a separate function
tty: n_tty: move canon handling to a separate function
tty: n_tty: use MASK() for masking out size bits
tty: n_tty: make n_tty_data::num_overrun unsigned
tty: n_tty: use time_is_before_jiffies() in n_tty_receive_overrun()
tty: n_tty: use 'num' for writes' counts
tty: n_tty: use output character directly
tty: n_tty: make flow of n_tty_receive_buf_common() a bool
Revert "tty: serial: meson: Add a earlycon for the T7 SoC"
Documentation: devices.txt: Fix minors for ttyCPM*
Documentation: devices.txt: Remove ttySIOC*
Documentation: devices.txt: Remove ttyIOC*
serial: 8250_bcm7271: improve bcm7271 8250 port
...
|
||
|
Linus Torvalds
|
51e7accbe8 |
USB / Thunderbolt / PHY driver update for 6.6-rc1
Here is the big set of USB, Thunderbolt, and PHY driver updates for
6.6-rc1. Included in here are:
- PHY driver additions and cleanups
- Thunderbolt minor additions and fixes
- USB MIDI 2 gadget support added
- dwc3 driver updates and additions
- Removal of some old USB wireless code that was missed when that
codebase was originally removed a few years ago, cleaning up some
core USB code paths
- USB core potential use-after-free fixes that syzbot from different
people/groups keeps tripping over
- typec updates and additions
- gadget fixes and cleanups
- loads of smaller USB core and driver cleanups all over the place
Full details are in the shortlog. All of these have been in linux-next
for a while with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt / PHY driver updates from Greg KH:
"Here is the big set of USB, Thunderbolt, and PHY driver updates for
6.6-rc1. Included in here are:
- PHY driver additions and cleanups
- Thunderbolt minor additions and fixes
- USB MIDI 2 gadget support added
- dwc3 driver updates and additions
- Removal of some old USB wireless code that was missed when that
codebase was originally removed a few years ago, cleaning up some
core USB code paths
- USB core potential use-after-free fixes that syzbot from different
people/groups keeps tripping over
- typec updates and additions
- gadget fixes and cleanups
- loads of smaller USB core and driver cleanups all over the place
Full details are in the shortlog. All of these have been in linux-next
for a while with no reported problems"
* tag 'usb-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (154 commits)
platform/chrome: cros_ec_typec: Configure Retimer cable type
tcpm: Avoid soft reset when partner does not support get_status
usb: typec: tcpm: reset counter when enter into unattached state after try role
usb: typec: tcpm: set initial svdm version based on pd revision
USB: serial: option: add FOXCONN T99W368/T99W373 product
USB: serial: option: add Quectel EM05G variant (0x030e)
usb: dwc2: add pci_device_id driver_data parse support
usb: gadget: remove max support speed info in bind operation
usb: gadget: composite: cleanup function config_ep_by_speed_and_alt()
usb: gadget: config: remove max speed check in usb_assign_descriptors()
usb: gadget: unconditionally allocate hs/ss descriptor in bind operation
usb: gadget: f_uvc: change endpoint allocation in uvc_function_bind()
usb: gadget: add a inline function gether_bitrate()
usb: gadget: use working speed to calcaulate network bitrate and qlen
dt-bindings: usb: samsung,exynos-dwc3: Add Exynos850 support
usb: dwc3: exynos: Add support for Exynos850 variant
usb: gadget: udc-xilinx: fix incorrect type in assignment warning
usb: gadget: udc-xilinx: fix cast from restricted __le16 warning
usb: gadget: udc-xilinx: fix restricted __le16 degrades to integer warning
USB: dwc2: hande irq on dead controller correctly
...
|
||
|
Linus Torvalds
|
e0152e7481 |
RISC-V Patches for the 6.6 Merge Window, Part 1
* Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions. * Support for userspace access to the performance counters. * Support for more instructions in kprobes. * Crash kernels can be allocated above 4GiB. * Support for KCFI. * Support for ELFs in !MMU configurations. * ARCH_KMALLOC_MINALIGN has been reduced to 8. * mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel). * Also various fixes and cleanups. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmTx96kTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiVjRD/9DYVLlkQ/OEDJjPaEcYCP49xgIVUUU lhs3XbSs2VNHBaiG114f6Q0AaT/uNi+uqSej3CeTmEot2kZkBk/f2yu+UNIriPZ9 GQiZsdyXhu921C+5VFtiI47KDWOVZ+Jpy3M1ll61IWt3yPSQHr1xOP0AOiyHHqe3 cmqpNnzjajlfVDoXPc2mGGzUJt/7ar4thcwnMNi98raXR5Qh7SP6rrHjoQhE1oFk LMP3CHqEAcHE2tE4CxZVpc6HOQ5m0LpQIOK7ypufGMyoIYESm5dt/JOT4MlhTtDw 6JzyVKtiM7lartUnUaW3ZoX4trQYT5gbXxWrJ2gCnUGy3VulikoXr1Rpz0qfdeOR XN8OLkVAqHfTGFI7oKk24f9Adw96R5NPZcdCay90h4J/kMfCiC7ZyUUI1XIa5iy1 np5pZCkf8HNcdywML7qcFd5n2O0wchyFnRLFZo6kJP9Ls5cEi6kBx/1jSdTcNgx/ fUKXyoEcriGoQiiwn29+4RZnU69gJV3zqQNLPpuwDQ5F/Q1zHTlrr+dqzezKkzcO dRTV2d2Q4A5vIDXPptzNNLlRQdrc8qxPJ1lxQVkPIU4/mtqczmZBwlyY2u9zwPyS sehJgJZnoAf+jm71NgQAKLck4MUBsMnMogOWunhXkVRCoZlbbkUWX4ECZYwPKsVk W7zVPmLvSM0l5g== =/tXb -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for the new "riscv,isa-extensions" and "riscv,isa-base" device tree interfaces for probing extensions - Support for userspace access to the performance counters - Support for more instructions in kprobes - Crash kernels can be allocated above 4GiB - Support for KCFI - Support for ELFs in !MMU configurations - ARCH_KMALLOC_MINALIGN has been reduced to 8 - mmap() defaults to sv48-sized addresses, with longer addresses hidden behind a hint (similar to Arm and Intel) - Also various fixes and cleanups * tag 'riscv-for-linus-6.6-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (51 commits) lib/Kconfig.debug: Restrict DEBUG_INFO_SPLIT for RISC-V riscv: support PREEMPT_DYNAMIC with static keys riscv: Move create_tmp_mapping() to init sections riscv: Mark KASAN tmp* page tables variables as static riscv: mm: use bitmap_zero() API riscv: enable DEBUG_FORCE_FUNCTION_ALIGN_64B riscv: remove redundant mv instructions RISC-V: mm: Document mmap changes RISC-V: mm: Update pgtable comment documentation RISC-V: mm: Add tests for RISC-V mm RISC-V: mm: Restrict address space for sv39,sv48,sv57 riscv: enable DMA_BOUNCE_UNALIGNED_KMALLOC for !dma_coherent riscv: allow kmalloc() caches aligned to the smallest value riscv: support the elf-fdpic binfmt loader binfmt_elf_fdpic: support 64-bit systems riscv: Allow CONFIG_CFI_CLANG to be selected riscv/purgatory: Disable CFI riscv: Add CFI error handling riscv: Add ftrace_stub_graph riscv: Add types to indirectly called assembly functions ... |
||
|
Linus Torvalds
|
4ad0a4c234 |
powerpc updates for 6.6
- Add HOTPLUG_SMT support (/sys/devices/system/cpu/smt) and honour the
configured SMT state when hotplugging CPUs into the system.
- Combine final TLB flush and lazy TLB mm shootdown IPIs when using the Radix
MMU to avoid a broadcast TLBIE flush on exit.
- Drop the exclusion between ptrace/perf watchpoints, and drop the now unused
associated arch hooks.
- Add support for the "nohlt" command line option to disable CPU idle.
- Add support for -fpatchable-function-entry for ftrace, with GCC >= 13.1.
- Rework memory block size determination, and support 256MB size on systems
with GPUs that have hotpluggable memory.
- Various other small features and fixes.
Thanks to: Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev,
Benjamin Gray, Christophe Leroy, Frederic Barrat, Gautam Menghani, Geoff Levand,
Hari Bathini, Immad Mir, Jialin Zhang, Joel Stanley, Jordan Niethe, Justin
Stitt, Kajol Jain, Kees Cook, Krzysztof Kozlowski, Laurent Dufour, Liang He,
Linus Walleij, Mahesh Salgaonkar, Masahiro Yamada, Michal Suchanek, Nageswara
R Sastry, Nathan Chancellor, Nathan Lynch, Naveen N Rao, Nicholas Piggin, Nick
Desaulniers, Omar Sandoval, Randy Dunlap, Reza Arbab, Rob Herring, Russell
Currey, Sourabh Jain, Thomas Gleixner, Trevor Woerner, Uwe Kleine-König, Vaibhav
Jain, Xiongfeng Wang, Yuan Tan, Zhang Rui, Zheng Zengkai.
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Merge tag 'powerpc-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
- Add HOTPLUG_SMT support (/sys/devices/system/cpu/smt) and honour the
configured SMT state when hotplugging CPUs into the system
- Combine final TLB flush and lazy TLB mm shootdown IPIs when using the
Radix MMU to avoid a broadcast TLBIE flush on exit
- Drop the exclusion between ptrace/perf watchpoints, and drop the now
unused associated arch hooks
- Add support for the "nohlt" command line option to disable CPU idle
- Add support for -fpatchable-function-entry for ftrace, with GCC >=
13.1
- Rework memory block size determination, and support 256MB size on
systems with GPUs that have hotpluggable memory
- Various other small features and fixes
Thanks to Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira
Rajeev, Benjamin Gray, Christophe Leroy, Frederic Barrat, Gautam
Menghani, Geoff Levand, Hari Bathini, Immad Mir, Jialin Zhang, Joel
Stanley, Jordan Niethe, Justin Stitt, Kajol Jain, Kees Cook, Krzysztof
Kozlowski, Laurent Dufour, Liang He, Linus Walleij, Mahesh Salgaonkar,
Masahiro Yamada, Michal Suchanek, Nageswara R Sastry, Nathan Chancellor,
Nathan Lynch, Naveen N Rao, Nicholas Piggin, Nick Desaulniers, Omar
Sandoval, Randy Dunlap, Reza Arbab, Rob Herring, Russell Currey, Sourabh
Jain, Thomas Gleixner, Trevor Woerner, Uwe Kleine-König, Vaibhav Jain,
Xiongfeng Wang, Yuan Tan, Zhang Rui, and Zheng Zengkai.
* tag 'powerpc-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (135 commits)
macintosh/ams: linux/platform_device.h is needed
powerpc/xmon: Reapply "Relax frame size for clang"
powerpc/mm/book3s64: Use 256M as the upper limit with coherent device memory attached
powerpc/mm/book3s64: Fix build error with SPARSEMEM disabled
powerpc/iommu: Fix notifiers being shared by PCI and VIO buses
powerpc/mpc5xxx: Add missing fwnode_handle_put()
powerpc/config: Disable SLAB_DEBUG_ON in skiroot
powerpc/pseries: Remove unused hcall tracing instruction
powerpc/pseries: Fix hcall tracepoints with JUMP_LABEL=n
powerpc: dts: add missing space before {
powerpc/eeh: Use pci_dev_id() to simplify the code
powerpc/64s: Move CPU -mtune options into Kconfig
powerpc/powermac: Fix unused function warning
powerpc/pseries: Rework lppaca_shared_proc() to avoid DEBUG_PREEMPT
powerpc: Don't include lppaca.h in paca.h
powerpc/pseries: Move hcall_vphn() prototype into vphn.h
powerpc/pseries: Move VPHN constants into vphn.h
cxl: Drop unused detach_spa()
powerpc: Drop zalloc_maybe_bootmem()
powerpc/powernv: Use struct opal_prd_msg in more places
...
|
||
|
Palmer Dabbelt
|
9389e6715f
|
Merge patch series "support allocating crashkernel above 4G explicitly on riscv"
Chen Jiahao <chenjiahao16@huawei.com> says: On riscv, the current crash kernel allocation logic is trying to allocate within 32bit addressible memory region by default, if failed, try to allocate without 4G restriction. In need of saving DMA zone memory while allocating a relatively large crash kernel region, allocating the reserved memory top down in high memory, without overlapping the DMA zone, is a mature solution. Hence this patchset introduces the parameter option crashkernel=X,[high,low]. One can reserve the crash kernel from high memory above DMA zone range by explicitly passing "crashkernel=X,high"; or reserve a memory range below 4G with "crashkernel=X,low". Besides, there are few rules need to take notice: 1. "crashkernel=X,[high,low]" will be ignored if "crashkernel=size" is specified. 2. "crashkernel=X,low" is valid only when "crashkernel=X,high" is passed and there is enough memory to be allocated under 4G. 3. When allocating crashkernel above 4G and no "crashkernel=X,low" is specified, a 128M low memory will be allocated automatically for swiotlb bounce buffer. See Documentation/admin-guide/kernel-parameters.txt for more information. To verify loading the crashkernel, adapted kexec-tools is attached below: https://github.com/chenjh005/kexec-tools/tree/build-test-riscv-v2 Following test cases have been performed as expected: 1) crashkernel=256M //low=256M 2) crashkernel=1G //low=1G 3) crashkernel=4G //high=4G, low=128M(default) 4) crashkernel=4G crashkernel=256M,high //high=4G, low=128M(default), high is ignored 5) crashkernel=4G crashkernel=256M,low //high=4G, low=128M(default), low is ignored 6) crashkernel=4G,high //high=4G, low=128M(default) 7) crashkernel=256M,low //low=0M, invalid 8) crashkernel=4G,high crashkernel=256M,low //high=4G, low=256M 9) crashkernel=4G,high crashkernel=4G,low //high=0M, low=0M, invalid 10) crashkernel=512M@0xd0000000 //low=512M 11) crashkernel=1G,high crashkernel=0M,low //high=1G, low=0M * b4-shazam-merge: docs: kdump: Update the crashkernel description for riscv riscv: kdump: Implement crashkernel=X,[high,low] Link: https://lore.kernel.org/r/20230726175000.2536220-1-chenjiahao16@huawei.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
|
Linus Torvalds
|
cd99b9eb4b |
Documentation work keeps chugging along; stuff for 6.6 includes:
- Work from Carlos Bilbao to integrate rustdoc output into the generated
HTML documentation. This took some work to figure out how to do it
without slowing the docs build and without creating people who don't have
Rust installed, but Carlos got there.
- Move the loongarch and mips architecture documentation under
Documentation/arch/.
- Some more maintainer documentation from Jakub
...plus the usual assortment of updates, translations, and fixes.
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Merge tag 'docs-6.6' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Documentation work keeps chugging along; this includes:
- Work from Carlos Bilbao to integrate rustdoc output into the
generated HTML documentation. This took some work to figure out how
to do it without slowing the docs build and without creating people
who don't have Rust installed, but Carlos got there
- Move the loongarch and mips architecture documentation under
Documentation/arch/
- Some more maintainer documentation from Jakub
... plus the usual assortment of updates, translations, and fixes"
* tag 'docs-6.6' of git://git.lwn.net/linux: (56 commits)
Docu: genericirq.rst: fix irq-example
input: docs: pxrc: remove reference to phoenix-sim
Documentation: serial-console: Fix literal block marker
docs/mm: remove references to hmm_mirror ops and clean typos
docs/zh_CN: correct regi_chg(),regi_add() to region_chg(),region_add()
Documentation: Fix typos
Documentation/ABI: Fix typos
scripts: kernel-doc: fix macro handling in enums
scripts: kernel-doc: parse DEFINE_DMA_UNMAP_[ADDR|LEN]
Documentation: riscv: Update boot image header since EFI stub is supported
Documentation: riscv: Add early boot document
Documentation: arm: Add bootargs to the table of added DT parameters
docs: kernel-parameters: Refer to the correct bitmap function
doc: update params of memhp_default_state=
docs: Add book to process/kernel-docs.rst
docs: sparse: fix invalid link addresses
docs: vfs: clean up after the iterate() removal
docs: Add a section on surveys to the researcher guidelines
docs: move mips under arch
docs: move loongarch under arch
...
|
||
|
Linus Torvalds
|
6c1b980a7e |
dma-maping updates for Linux 6.6
- allow dynamic sizing of the swiotlb buffer, to cater for secure
virtualization workloads that require all I/O to be bounce buffered
(Petr Tesarik)
- move a declaration to a header (Arnd Bergmann)
- check for memory region overlap in dma-contiguous (Binglei Wang)
- remove the somewhat dangerous runtime swiotlb-xen enablement and
unexport is_swiotlb_active (Christoph Hellwig, Juergen Gross)
- per-node CMA improvements (Yajun Deng)
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Merge tag 'dma-mapping-6.6-2023-08-29' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-maping updates from Christoph Hellwig:
- allow dynamic sizing of the swiotlb buffer, to cater for secure
virtualization workloads that require all I/O to be bounce buffered
(Petr Tesarik)
- move a declaration to a header (Arnd Bergmann)
- check for memory region overlap in dma-contiguous (Binglei Wang)
- remove the somewhat dangerous runtime swiotlb-xen enablement and
unexport is_swiotlb_active (Christoph Hellwig, Juergen Gross)
- per-node CMA improvements (Yajun Deng)
* tag 'dma-mapping-6.6-2023-08-29' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: optimize get_max_slots()
swiotlb: move slot allocation explanation comment where it belongs
swiotlb: search the software IO TLB only if the device makes use of it
swiotlb: allocate a new memory pool when existing pools are full
swiotlb: determine potential physical address limit
swiotlb: if swiotlb is full, fall back to a transient memory pool
swiotlb: add a flag whether SWIOTLB is allowed to grow
swiotlb: separate memory pool data from other allocator data
swiotlb: add documentation and rename swiotlb_do_find_slots()
swiotlb: make io_tlb_default_mem local to swiotlb.c
swiotlb: bail out of swiotlb_init_late() if swiotlb is already allocated
dma-contiguous: check for memory region overlap
dma-contiguous: support numa CMA for specified node
dma-contiguous: support per-numa CMA for all architectures
dma-mapping: move arch_dma_set_mask() declaration to header
swiotlb: unexport is_swiotlb_active
x86: always initialize xen-swiotlb when xen-pcifront is enabling
xen/pci: add flag for PCI passthrough being possible
|
||
|
Linus Torvalds
|
d68b4b6f30 |
- An extensive rework of kexec and crash Kconfig from Eric DeVolder
("refactor Kconfig to consolidate KEXEC and CRASH options").
- kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
couple of macros to args.h").
- gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
commands").
- vsprintf inclusion rationalization from Andy Shevchenko
("lib/vsprintf: Rework header inclusions").
- Switch the handling of kdump from a udev scheme to in-kernel handling,
by Eric DeVolder ("crash: Kernel handling of CPU and memory hot
un/plug").
- Many singleton patches to various parts of the tree
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Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- An extensive rework of kexec and crash Kconfig from Eric DeVolder
("refactor Kconfig to consolidate KEXEC and CRASH options")
- kernel.h slimming work from Andy Shevchenko ("kernel.h: Split out a
couple of macros to args.h")
- gdb feature work from Kuan-Ying Lee ("Add GDB memory helper
commands")
- vsprintf inclusion rationalization from Andy Shevchenko
("lib/vsprintf: Rework header inclusions")
- Switch the handling of kdump from a udev scheme to in-kernel
handling, by Eric DeVolder ("crash: Kernel handling of CPU and memory
hot un/plug")
- Many singleton patches to various parts of the tree
* tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (81 commits)
document while_each_thread(), change first_tid() to use for_each_thread()
drivers/char/mem.c: shrink character device's devlist[] array
x86/crash: optimize CPU changes
crash: change crash_prepare_elf64_headers() to for_each_possible_cpu()
crash: hotplug support for kexec_load()
x86/crash: add x86 crash hotplug support
crash: memory and CPU hotplug sysfs attributes
kexec: exclude elfcorehdr from the segment digest
crash: add generic infrastructure for crash hotplug support
crash: move a few code bits to setup support of crash hotplug
kstrtox: consistently use _tolower()
kill do_each_thread()
nilfs2: fix WARNING in mark_buffer_dirty due to discarded buffer reuse
scripts/bloat-o-meter: count weak symbol sizes
treewide: drop CONFIG_EMBEDDED
lockdep: fix static memory detection even more
lib/vsprintf: declare no_hash_pointers in sprintf.h
lib/vsprintf: split out sprintf() and friends
kernel/fork: stop playing lockless games for exe_file replacement
adfs: delete unused "union adfs_dirtail" definition
...
|
||
|
Linus Torvalds
|
b96a3e9142 |
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support tracking
KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the GENERIC_IOREMAP
ioremap()/iounmap() code ("mm: ioremap: Convert architectures to take
GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency improvements
("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation, from
Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code ("Two
minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle most
file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for memmap
on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table range
API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM subsystem
documentation ("Improve mm documentation").
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Merge tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Some swap cleanups from Ma Wupeng ("fix WARN_ON in
add_to_avail_list")
- Peter Xu has a series (mm/gup: Unify hugetlb, speed up thp") which
reduces the special-case code for handling hugetlb pages in GUP. It
also speeds up GUP handling of transparent hugepages.
- Peng Zhang provides some maple tree speedups ("Optimize the fast path
of mas_store()").
- Sergey Senozhatsky has improved te performance of zsmalloc during
compaction (zsmalloc: small compaction improvements").
- Domenico Cerasuolo has developed additional selftest code for zswap
("selftests: cgroup: add zswap test program").
- xu xin has doe some work on KSM's handling of zero pages. These
changes are mainly to enable the user to better understand the
effectiveness of KSM's treatment of zero pages ("ksm: support
tracking KSM-placed zero-pages").
- Jeff Xu has fixes the behaviour of memfd's
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED sysctl ("mm/memfd: fix sysctl
MEMFD_NOEXEC_SCOPE_NOEXEC_ENFORCED").
- David Howells has fixed an fscache optimization ("mm, netfs, fscache:
Stop read optimisation when folio removed from pagecache").
- Axel Rasmussen has given userfaultfd the ability to simulate memory
poisoning ("add UFFDIO_POISON to simulate memory poisoning with
UFFD").
- Miaohe Lin has contributed some routine maintenance work on the
memory-failure code ("mm: memory-failure: remove unneeded PageHuge()
check").
- Peng Zhang has contributed some maintenance work on the maple tree
code ("Improve the validation for maple tree and some cleanup").
- Hugh Dickins has optimized the collapsing of shmem or file pages into
THPs ("mm: free retracted page table by RCU").
- Jiaqi Yan has a patch series which permits us to use the healthy
subpages within a hardware poisoned huge page for general purposes
("Improve hugetlbfs read on HWPOISON hugepages").
- Kemeng Shi has done some maintenance work on the pagetable-check code
("Remove unused parameters in page_table_check").
- More folioification work from Matthew Wilcox ("More filesystem folio
conversions for 6.6"), ("Followup folio conversions for zswap"). And
from ZhangPeng ("Convert several functions in page_io.c to use a
folio").
- page_ext cleanups from Kemeng Shi ("minor cleanups for page_ext").
- Baoquan He has converted some architectures to use the
GENERIC_IOREMAP ioremap()/iounmap() code ("mm: ioremap: Convert
architectures to take GENERIC_IOREMAP way").
- Anshuman Khandual has optimized arm64 tlb shootdown ("arm64: support
batched/deferred tlb shootdown during page reclamation/migration").
- Better maple tree lockdep checking from Liam Howlett ("More strict
maple tree lockdep"). Liam also developed some efficiency
improvements ("Reduce preallocations for maple tree").
- Cleanup and optimization to the secondary IOMMU TLB invalidation,
from Alistair Popple ("Invalidate secondary IOMMU TLB on permission
upgrade").
- Ryan Roberts fixes some arm64 MM selftest issues ("selftests/mm fixes
for arm64").
- Kemeng Shi provides some maintenance work on the compaction code
("Two minor cleanups for compaction").
- Some reduction in mmap_lock pressure from Matthew Wilcox ("Handle
most file-backed faults under the VMA lock").
- Aneesh Kumar contributes code to use the vmemmap optimization for DAX
on ppc64, under some circumstances ("Add support for DAX vmemmap
optimization for ppc64").
- page-ext cleanups from Kemeng Shi ("add page_ext_data to get client
data in page_ext"), ("minor cleanups to page_ext header").
- Some zswap cleanups from Johannes Weiner ("mm: zswap: three
cleanups").
- kmsan cleanups from ZhangPeng ("minor cleanups for kmsan").
- VMA handling cleanups from Kefeng Wang ("mm: convert to
vma_is_initial_heap/stack()").
- DAMON feature work from SeongJae Park ("mm/damon/sysfs-schemes:
implement DAMOS tried total bytes file"), ("Extend DAMOS filters for
address ranges and DAMON monitoring targets").
- Compaction work from Kemeng Shi ("Fixes and cleanups to compaction").
- Liam Howlett has improved the maple tree node replacement code
("maple_tree: Change replacement strategy").
- ZhangPeng has a general code cleanup - use the K() macro more widely
("cleanup with helper macro K()").
- Aneesh Kumar brings memmap-on-memory to ppc64 ("Add support for
memmap on memory feature on ppc64").
- pagealloc cleanups from Kemeng Shi ("Two minor cleanups for pcp list
in page_alloc"), ("Two minor cleanups for get pageblock
migratetype").
- Vishal Moola introduces a memory descriptor for page table tracking,
"struct ptdesc" ("Split ptdesc from struct page").
- memfd selftest maintenance work from Aleksa Sarai ("memfd: cleanups
for vm.memfd_noexec").
- MM include file rationalization from Hugh Dickins ("arch: include
asm/cacheflush.h in asm/hugetlb.h").
- THP debug output fixes from Hugh Dickins ("mm,thp: fix sloppy text
output").
- kmemleak improvements from Xiaolei Wang ("mm/kmemleak: use
object_cache instead of kmemleak_initialized").
- More folio-related cleanups from Matthew Wilcox ("Remove _folio_dtor
and _folio_order").
- A VMA locking scalability improvement from Suren Baghdasaryan
("Per-VMA lock support for swap and userfaults").
- pagetable handling cleanups from Matthew Wilcox ("New page table
range API").
- A batch of swap/thp cleanups from David Hildenbrand ("mm/swap: stop
using page->private on tail pages for THP_SWAP + cleanups").
- Cleanups and speedups to the hugetlb fault handling from Matthew
Wilcox ("Change calling convention for ->huge_fault").
- Matthew Wilcox has also done some maintenance work on the MM
subsystem documentation ("Improve mm documentation").
* tag 'mm-stable-2023-08-28-18-26' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (489 commits)
maple_tree: shrink struct maple_tree
maple_tree: clean up mas_wr_append()
secretmem: convert page_is_secretmem() to folio_is_secretmem()
nios2: fix flush_dcache_page() for usage from irq context
hugetlb: add documentation for vma_kernel_pagesize()
mm: add orphaned kernel-doc to the rst files.
mm: fix clean_record_shared_mapping_range kernel-doc
mm: fix get_mctgt_type() kernel-doc
mm: fix kernel-doc warning from tlb_flush_rmaps()
mm: remove enum page_entry_size
mm: allow ->huge_fault() to be called without the mmap_lock held
mm: move PMD_ORDER to pgtable.h
mm: remove checks for pte_index
memcg: remove duplication detection for mem_cgroup_uncharge_swap
mm/huge_memory: work on folio->swap instead of page->private when splitting folio
mm/swap: inline folio_set_swap_entry() and folio_swap_entry()
mm/swap: use dedicated entry for swap in folio
mm/swap: stop using page->private on tail pages for THP_SWAP
selftests/mm: fix WARNING comparing pointer to 0
selftests: cgroup: fix test_kmem_memcg_deletion kernel mem check
...
|
||
|
Linus Torvalds
|
f2586d921c |
Hi,
Contents: - Restrict linking of keys to .ima and .evm keyrings based on digitalSignature attribute in the certificate. - PowerVM: load machine owner keys into the .machine [1] keyring. - PowerVM: load module signing keys into the secondary trusted keyring (keys blessed by the vendor). - tpm_tis_spi: half-duplex transfer mode - tpm_tis: retry corrupted transfers - Apply revocation list (.mokx) to an all system keyrings (e.g. .machine keyring). [1] https://blogs.oracle.com/linux/post/the-machine-keyring BR, Jarkko -----BEGIN PGP SIGNATURE----- iIgEABYIADAWIQRE6pSOnaBC00OEHEIaerohdGur0gUCZN5/qBIcamFya2tvQGtl cm5lbC5vcmcACgkQGnq6IXRrq9J4GQEAstTtQfGGrx5KInOTMWOvaq/Cum5iW4AD NefVfbUtCCQBANvFtxoPYQS5u6+rIdxzIwFiNUlOyt2uR2bkk4UUiPML =Vvs8 -----END PGP SIGNATURE----- Merge tag 'tpmdd-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd Pull tpm updates from Jarkko Sakkinen: - Restrict linking of keys to .ima and .evm keyrings based on digitalSignature attribute in the certificate - PowerVM: load machine owner keys into the .machine [1] keyring - PowerVM: load module signing keys into the secondary trusted keyring (keys blessed by the vendor) - tpm_tis_spi: half-duplex transfer mode - tpm_tis: retry corrupted transfers - Apply revocation list (.mokx) to an all system keyrings (e.g. .machine keyring) Link: https://blogs.oracle.com/linux/post/the-machine-keyring [1] * tag 'tpmdd-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd: certs: Reference revocation list for all keyrings tpm/tpm_tis_synquacer: Use module_platform_driver macro to simplify the code tpm: remove redundant variable len tpm_tis: Resend command to recover from data transfer errors tpm_tis: Use responseRetry to recover from data transfer errors tpm_tis: Move CRC check to generic send routine tpm_tis_spi: Add hardware wait polling KEYS: Replace all non-returning strlcpy with strscpy integrity: PowerVM support for loading third party code signing keys integrity: PowerVM machine keyring enablement integrity: check whether imputed trust is enabled integrity: remove global variable from machine_keyring.c integrity: ignore keys failing CA restrictions on non-UEFI platform integrity: PowerVM support for loading CA keys on machine keyring integrity: Enforce digitalSignature usage in the ima and evm keyrings KEYS: DigitalSignature link restriction tpm_tis: Revert "tpm_tis: Disable interrupts on ThinkPad T490s" |
||
|
Linus Torvalds
|
330235e874 |
ACPI updates for 6.6-rc1
- Update the ACPICA code in the kernel to upstream revision 20230628
including the following changes:
* Suppress a GCC 12 dangling-pointer warning (Philip Prindeville).
* Reformat the ACPI_STATE_COMMON macro and its users (George Guo).
* Replace the ternary operator with ACPI_MIN() (Jiangshan Yi).
* Add support for _DSC as per ACPI 6.5 (Saket Dumbre).
* Remove a duplicate macro from zephyr header (Najumon B.A).
* Add data structures for GED and _EVT tracking (Jose Marinho).
* Fix misspelled CDAT DSMAS define (Dave Jiang).
* Simplify an error message in acpi_ds_result_push() (Christophe
Jaillet).
* Add a struct size macro related to SRAT (Dave Jiang).
* Add AML_NO_OPERAND_RESOLVE flag to Timer (Abhishek Mainkar).
* Add support for RISC-V external interrupt controllers in MADT (Sunil
V L).
* Add RHCT flags, CMO and MMU nodes (Sunil V L).
* Change ACPICA version to 20230628 (Bob Moore).
- Introduce new wrappers for ACPICA notify handler install/remove and
convert multiple drivers to using their own Notify() handlers instead
of the ACPI bus type .notify() slated for removal (Michal Wilczynski).
- Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2 (Hans
de Goede).
- Put ACPI video and its child devices explicitly into D0 on boot to
avoid platform firmware confusion (Kai-Heng Feng).
- Add backlight=native DMI quirk for Lenovo Ideapad Z470 (Jiri Slaby).
- Support obtaining physical CPU ID from MADT on LoongArch (Bibo Mao).
- Convert ACPI CPU initialization to using _OSC instead of _PDC that
has been depreceted since 2018 and dropped from the specification in
ACPI 6.5 (Michal Wilczynski, Rafael Wysocki).
- Drop non-functional nocrt parameter from ACPI thermal (Mario
Limonciello).
- Clean up the ACPI thermal driver, rework the handling of firmware
notifications in it and make it provide a table of generic trip point
structures to the core during initialization (Rafael Wysocki).
- Defer enumeration of devices with _DEP pointing to IVSC (Wentong Wu).
- Install SystemCMOS address space handler for ACPI000E (TAD) to meet
platform firmware expectations on some platforms (Zhang Rui).
- Fix finding the generic error data in the ACPi extlog driver for
compatibility with old and new firmware interface versions (Xiaochun
Lee).
- Remove assorted unused declarations of functions (Yue Haibing).
- Move AMBA bus scan handling into arm64 specific directory (Sudeep
Holla).
- Fix and clean up suspend-to-idle interface for AMD systems (Mario
Limonciello, Andy Shevchenko).
- Fix string truncation warning in pnpacpi_add_device() (Sunil V L).
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Merge tag 'acpi-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"These include new ACPICA material, a rework of the ACPI thermal
driver, a switch-over of the ACPI processor driver to using _OSC
instead of (long deprecated) _PDC for CPU initialization, a rework of
firmware notifications handling in several drivers, fixes and cleanups
for suspend-to-idle handling on AMD systems, ACPI backlight driver
updates and more.
Specifics:
- Update the ACPICA code in the kernel to upstream revision 20230628
including the following changes:
- Suppress a GCC 12 dangling-pointer warning (Philip Prindeville)
- Reformat the ACPI_STATE_COMMON macro and its users (George Guo)
- Replace the ternary operator with ACPI_MIN() (Jiangshan Yi)
- Add support for _DSC as per ACPI 6.5 (Saket Dumbre)
- Remove a duplicate macro from zephyr header (Najumon B.A)
- Add data structures for GED and _EVT tracking (Jose Marinho)
- Fix misspelled CDAT DSMAS define (Dave Jiang)
- Simplify an error message in acpi_ds_result_push() (Christophe
Jaillet)
- Add a struct size macro related to SRAT (Dave Jiang)
- Add AML_NO_OPERAND_RESOLVE flag to Timer (Abhishek Mainkar)
- Add support for RISC-V external interrupt controllers in MADT
(Sunil V L)
- Add RHCT flags, CMO and MMU nodes (Sunil V L)
- Change ACPICA version to 20230628 (Bob Moore)
- Introduce new wrappers for ACPICA notify handler install/remove and
convert multiple drivers to using their own Notify() handlers
instead of the ACPI bus type .notify() slated for removal (Michal
Wilczynski)
- Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2
(Hans de Goede)
- Put ACPI video and its child devices explicitly into D0 on boot to
avoid platform firmware confusion (Kai-Heng Feng)
- Add backlight=native DMI quirk for Lenovo Ideapad Z470 (Jiri Slaby)
- Support obtaining physical CPU ID from MADT on LoongArch (Bibo Mao)
- Convert ACPI CPU initialization to using _OSC instead of _PDC that
has been depreceted since 2018 and dropped from the specification
in ACPI 6.5 (Michal Wilczynski, Rafael Wysocki)
- Drop non-functional nocrt parameter from ACPI thermal (Mario
Limonciello)
- Clean up the ACPI thermal driver, rework the handling of firmware
notifications in it and make it provide a table of generic trip
point structures to the core during initialization (Rafael Wysocki)
- Defer enumeration of devices with _DEP pointing to IVSC (Wentong
Wu)
- Install SystemCMOS address space handler for ACPI000E (TAD) to meet
platform firmware expectations on some platforms (Zhang Rui)
- Fix finding the generic error data in the ACPi extlog driver for
compatibility with old and new firmware interface versions
(Xiaochun Lee)
- Remove assorted unused declarations of functions (Yue Haibing)
- Move AMBA bus scan handling into arm64 specific directory (Sudeep
Holla)
- Fix and clean up suspend-to-idle interface for AMD systems (Mario
Limonciello, Andy Shevchenko)
- Fix string truncation warning in pnpacpi_add_device() (Sunil V L)"
* tag 'acpi-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (66 commits)
ACPI: x86: s2idle: Add a function to get LPS0 constraint for a device
ACPI: x86: s2idle: Add for_each_lpi_constraint() helper
ACPI: x86: s2idle: Add more debugging for AMD constraints parsing
ACPI: x86: s2idle: Fix a logic error parsing AMD constraints table
ACPI: x86: s2idle: Catch multiple ACPI_TYPE_PACKAGE objects
ACPI: x86: s2idle: Post-increment variables when getting constraints
ACPI: Adjust #ifdef for *_lps0_dev use
ACPI: TAD: Install SystemCMOS address space handler for ACPI000E
ACPI: Remove assorted unused declarations of functions
ACPI: extlog: Fix finding the generic error data for v3 structure
PNP: ACPI: Fix string truncation warning
ACPI: Remove unused extern declaration acpi_paddr_to_node()
ACPI: video: Add backlight=native DMI quirk for Apple iMac12,1 and iMac12,2
ACPI: video: Put ACPI video and its child devices into D0 on boot
ACPI: processor: LoongArch: Get physical ID from MADT
ACPI: scan: Defer enumeration of devices with a _DEP pointing to IVSC device
ACPI: thermal: Eliminate code duplication from acpi_thermal_notify()
ACPI: thermal: Drop unnecessary thermal zone callbacks
ACPI: thermal: Rework thermal_get_trend()
ACPI: thermal: Use trip point table to register thermal zones
...
|
||
|
Linus Torvalds
|
e5b7ca09e9 |
s390 updates for 6.6 merge window
- Add vfio-ap support to pass-through crypto devices to secure execution guests - Add API ordinal 6 support to zcrypt_ep11misc device drive, which is required to handle key generate and key derive (e.g. secure key to protected key) correctly - Add missing secure/has_secure sysfs files for the case where it is not possible to figure where a system has been booted from. Existing user space relies on that these files are always present - Fix DCSS block device driver list corruption, caused by incorrect error handling - Convert virt_to_pfn() and pfn_to_virt() from defines to static inline functions to enforce type checking - Cleanups, improvements, and minor fixes to the kernel mapping setup - Fix various virtual vs physical address confusions - Move pfault code to separate file, since it has nothing to do with regular fault handling - Move s390 documentation to Documentation/arch/ like it has been done for other architectures already - Add HAVE_FUNCTION_GRAPH_RETVAL support - Factor out the s390_hypfs filesystem and add a new config option for it. The filesystem is deprecated and as soon as all users are gone it can be removed some time in the not so near future - Remove support for old CEX2 and CEX3 crypto cards from zcrypt device driver - Add support for user-defined certificates: receive user-defined certificates with a diagnose call and provide them via 'cert_store' keyring to user space - Couple of other small fixes and improvements all over the place -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEECMNfWEw3SLnmiLkZIg7DeRspbsIFAmTrqNYACgkQIg7DeRsp bsKkUBAApWXr3WCJA2tige34AnFwmskx4sBxl/fgwcwJrC55fED1jKWaiXOM6isv P+hqavZnks3gXZdYcD3kxXkNMh+fPNWw7BAL35J5Gu1VShA/jlbTC6ZrvUO3t+Fy NsdLvBDbNDdyUzQF7w0Xb0jyIxqhJTRyhLfR5oXES63FHomv2F/vofu4jWR/q+cc F9mcnoDeN4zLdssdvl6WtPX4nEY9RpG0QOh67drnxuq+8v7sL8gKN4ti94Rp6vhs g4NhNs9xgRIPoOcX2KlSIdFqO9P12jSXZq0G4HcOp8UGQvgU/mS+UG3pQwV3ZJLS 3/kUJZ4/CwQa1xUFtPGP1/4AngGNOnhT9FCD4KrqjDkRZmLsd5RvURe6L1zQ3vbZ KnX7q0Otx4xRVYPlbHb9aP+tC7f3Q10ytBAps616qZoA/2SMss2BLZiiPBpCCvDp L+9dRhBGYCP2PSe6H/qGQFfMW+uY7QF+NDcDAT5mX1lS8OVrGJxqM7Q+sY2pMLGo 5nR16LvM9g6W/ZnsVn0+BWg4CgaPMi+PMfMPxs/o9RG+/0d1AJx1aLSiHdP1pXog 8/Wg4GaaJ27S4Ers0JUmH7VDO+QkkLvAArstjk8l59r1XslWiBP5USebkxtgu6EQ ehAh0+oa432ALq8Rn1FK/X+pWFumbTVf8OPwR8YEjDbeTPIBCqg= =ewd9 -----END PGP SIGNATURE----- Merge tag 's390-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Heiko Carstens: - Add vfio-ap support to pass-through crypto devices to secure execution guests - Add API ordinal 6 support to zcrypt_ep11misc device drive, which is required to handle key generate and key derive (e.g. secure key to protected key) correctly - Add missing secure/has_secure sysfs files for the case where it is not possible to figure where a system has been booted from. Existing user space relies on that these files are always present - Fix DCSS block device driver list corruption, caused by incorrect error handling - Convert virt_to_pfn() and pfn_to_virt() from defines to static inline functions to enforce type checking - Cleanups, improvements, and minor fixes to the kernel mapping setup - Fix various virtual vs physical address confusions - Move pfault code to separate file, since it has nothing to do with regular fault handling - Move s390 documentation to Documentation/arch/ like it has been done for other architectures already - Add HAVE_FUNCTION_GRAPH_RETVAL support - Factor out the s390_hypfs filesystem and add a new config option for it. The filesystem is deprecated and as soon as all users are gone it can be removed some time in the not so near future - Remove support for old CEX2 and CEX3 crypto cards from zcrypt device driver - Add support for user-defined certificates: receive user-defined certificates with a diagnose call and provide them via 'cert_store' keyring to user space - Couple of other small fixes and improvements all over the place * tag 's390-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (66 commits) s390/pci: use builtin_misc_device macro to simplify the code s390/vfio-ap: make sure nib is shared KVM: s390: export kvm_s390_pv*_is_protected functions s390/uv: export uv_pin_shared for direct usage s390/vfio-ap: check for TAPQ response codes 0x35 and 0x36 s390/vfio-ap: handle queue state change in progress on reset s390/vfio-ap: use work struct to verify queue reset s390/vfio-ap: store entire AP queue status word with the queue object s390/vfio-ap: remove upper limit on wait for queue reset to complete s390/vfio-ap: allow deconfigured queue to be passed through to a guest s390/vfio-ap: wait for response code 05 to clear on queue reset s390/vfio-ap: clean up irq resources if possible s390/vfio-ap: no need to check the 'E' and 'I' bits in APQSW after TAPQ s390/ipl: refactor deprecated strncpy s390/ipl: fix virtual vs physical address confusion s390/zcrypt_ep11misc: support API ordinal 6 with empty pin-blob s390/paes: fix PKEY_TYPE_EP11_AES handling for secure keyblobs s390/pkey: fix PKEY_TYPE_EP11_AES handling for sysfs attributes s390/pkey: fix PKEY_TYPE_EP11_AES handling in PKEY_VERIFYKEY2 IOCTL s390/pkey: fix PKEY_TYPE_EP11_AES handling in PKEY_KBLOB2PROTK[23] ... |
||
|
Linus Torvalds
|
68cadad11f |
RCU pull request for v6.6
doc.2023.07.14b: Documentation updates. fixes.2023.08.16a: Miscellaneous fixes, perhaps most notably simplifying SRCU_NOTIFIER_INIT() as suggested. rcu-tasks.2023.07.24a: RCU Tasks updates, most notably treating Tasks RCU callbacks as lazy while still treating synchronous grace periods as urgent. Also fixes one bug that restores the ability to apply debug-objects to RCU Tasks and another that fixes a race condition that could result in false-positive failures of the boot-time self-test code. rcuscale.2023.07.14b: RCU-scalability performance-test updates, most notably adding the ability to measure the RCU-Tasks's grace-period kthread's CPU consumption. This proved quite useful for the rcu-tasks.2023.07.24a work. refscale.2023.07.14b: Reference-acquisition/release performance-test updates, including a fix for an uninitialized wait_queue_head_t. torture.2023.08.14a: Miscellaneous torture-test updates. torturescripts.2023.07.20a: Torture-test scripting updates, including removal of the non-longer-functional formal-verification scripts, test builds of individual RCU Tasks flavors, better diagnostics for loss of connectivity for distributed rcutorture tests, disabling of reboot loops in qemu/KVM-based rcutorture testing, and passing of init parameters to rcutorture's init program. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEbK7UrM+RBIrCoViJnr8S83LZ+4wFAmTjkssTHHBhdWxtY2tA a2VybmVsLm9yZwAKCRCevxLzctn7jITND/9zEqYNbeFrcBs/YaHdoAjsNgOt1IYN csfF/KArVgdvmrwlV/nEaQMLaJcw9X7DVU5+7E2JbbDaB/2FSacseNyKk6mfgSVK /0rnTOXpqI9/T1HiJObWZvDQFuKL12bfteXWGJg1sMt2JUGZ4nAWhdZ3xRjp2XkO 89qB5r0fF8gyGwvQ3M29ss8T9Oy0uUNJmDY/QyVxHM6dhkpSAezFffKzD7C4zkSV WucRTpYJ7bs6otBGtVmwz3x60UAuLwcVfQyB+CTbnGLsps9yAYU+1DDVdm7olcr3 ARXMeboeodMvy9jWXhtbWRVAAob4lVUDXQN27kb4sBgroRQBfQXMuByRAU6s0VtX frOl6rlbORuAetsC8wFL0IFVn4yTpvXKbYw7h1MXTs7gVVbl33O9FieGvWu0r79/ VR4Xw+JbmYWtyvFV8Zaq4iIEcOe+PeNH6u0bPx+htsHYd1+DUG2UY0MVmJQ3a4sb ygejA6mguCk7KBzWab8wdDpgAfhNwg0T9a+LQYcaskuD5SSWjYqqg6i1ulqqqyiE bOfRKDX4mWmAobWKHLssqUrjiLbxfygIaHjCrt7rWJKPIs1bK/WfWa4JbrE0NRwK 9IDd1lWc9C+zoUpjyZWSG3ahK5lWo2u4sPNoRtMQjowjobIz1cBhaEwmFe72bG7C FCKb7Da2oUaLOw== =EujZ -----END PGP SIGNATURE----- Merge tag 'rcu.2023.08.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu Pull RCU updates from Paul McKenney: - Documentation updates - Miscellaneous fixes, perhaps most notably simplifying SRCU_NOTIFIER_INIT() as suggested - RCU Tasks updates, most notably treating Tasks RCU callbacks as lazy while still treating synchronous grace periods as urgent. Also fixes one bug that restores the ability to apply debug-objects to RCU Tasks and another that fixes a race condition that could result in false-positive failures of the boot-time self-test code - RCU-scalability performance-test updates, most notably adding the ability to measure the RCU-Tasks's grace-period kthread's CPU consumption. This proved quite useful for the RCU Tasks work - Reference-acquisition/release performance-test updates, including a fix for an uninitialized wait_queue_head_t - Miscellaneous torture-test updates - Torture-test scripting updates, including removal of the non-longer-functional formal-verification scripts, test builds of individual RCU Tasks flavors, better diagnostics for loss of connectivity for distributed rcutorture tests, disabling of reboot loops in qemu/KVM-based rcutorture testing, and passing of init parameters to rcutorture's init program * tag 'rcu.2023.08.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (64 commits) rcu: Use WRITE_ONCE() for assignments to ->next for rculist_nulls rcu: Make the rcu_nocb_poll boot parameter usable via boot config rcu: Mark __rcu_irq_enter_check_tick() ->rcu_urgent_qs load srcu,notifier: Remove #ifdefs in favor of SRCU Tiny srcu_usage rcutorture: Stop right-shifting torture_random() return values torture: Stop right-shifting torture_random() return values torture: Move stutter_wait() timeouts to hrtimers torture: Move torture_shuffle() timeouts to hrtimers torture: Move torture_onoff() timeouts to hrtimers torture: Make torture_hrtimeout_*() use TASK_IDLE torture: Add lock_torture writer_fifo module parameter torture: Add a kthread-creation callback to _torture_create_kthread() rcu-tasks: Fix boot-time RCU tasks debug-only deadlock rcu-tasks: Permit use of debug-objects with RCU Tasks flavors checkpatch: Complain about unexpected uses of RCU Tasks Trace torture: Cause mkinitrd.sh to indicate failure on compile errors torture: Make init program dump command-line arguments torture: Switch qemu from -nographic to -display none torture: Add init-program support for loongarch torture: Avoid torture-test reboot loops ... |
||
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Andrei Emeltchenko
|
ac6804fbf4 |
Documentation: serial-console: Fix literal block marker
Make rendered text readable by fixing literal block marker, changing ":" to "::". Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230825091626.354352-1-Andrei.Emeltchenko.news@gmail.com |
||
|
Linus Torvalds
|
de16588a77 |
v6.6-vfs.misc
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Merge tag 'v6.6-vfs.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"This contains the usual miscellaneous features, cleanups, and fixes
for vfs and individual filesystems.
Features:
- Block mode changes on symlinks and rectify our broken semantics
- Report file modifications via fsnotify() for splice
- Allow specifying an explicit timeout for the "rootwait" kernel
command line option. This allows to timeout and reboot instead of
always waiting indefinitely for the root device to show up
- Use synchronous fput for the close system call
Cleanups:
- Get rid of open-coded lockdep workarounds for async io submitters
and replace it all with a single consolidated helper
- Simplify epoll allocation helper
- Convert simple_write_begin and simple_write_end to use a folio
- Convert page_cache_pipe_buf_confirm() to use a folio
- Simplify __range_close to avoid pointless locking
- Disable per-cpu buffer head cache for isolated cpus
- Port ecryptfs to kmap_local_page() api
- Remove redundant initialization of pointer buf in pipe code
- Unexport the d_genocide() function which is only used within core
vfs
- Replace printk(KERN_ERR) and WARN_ON() with WARN()
Fixes:
- Fix various kernel-doc issues
- Fix refcount underflow for eventfds when used as EFD_SEMAPHORE
- Fix a mainly theoretical issue in devpts
- Check the return value of __getblk() in reiserfs
- Fix a racy assert in i_readcount_dec
- Fix integer conversion issues in various functions
- Fix LSM security context handling during automounts that prevented
NFS superblock sharing"
* tag 'v6.6-vfs.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (39 commits)
cachefiles: use kiocb_{start,end}_write() helpers
ovl: use kiocb_{start,end}_write() helpers
aio: use kiocb_{start,end}_write() helpers
io_uring: use kiocb_{start,end}_write() helpers
fs: create kiocb_{start,end}_write() helpers
fs: add kerneldoc to file_{start,end}_write() helpers
io_uring: rename kiocb_end_write() local helper
splice: Convert page_cache_pipe_buf_confirm() to use a folio
libfs: Convert simple_write_begin and simple_write_end to use a folio
fs/dcache: Replace printk and WARN_ON by WARN
fs/pipe: remove redundant initialization of pointer buf
fs: Fix kernel-doc warnings
devpts: Fix kernel-doc warnings
doc: idmappings: fix an error and rephrase a paragraph
init: Add support for rootwait timeout parameter
vfs: fix up the assert in i_readcount_dec
fs: Fix one kernel-doc comment
docs: filesystems: idmappings: clarify from where idmappings are taken
fs/buffer.c: disable per-CPU buffer_head cache for isolated CPUs
vfs, security: Fix automount superblock LSM init problem, preventing NFS sb sharing
...
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Rafael J. Wysocki
|
0c2ec0f165 |
Merge branch 'acpi-thermal'
Merge ACPI thermal driver changes for 6.6-rc1: - Drop non-functional nocrt parameter from ACPI thermal (Mario Limonciello). - Clean up the ACPI thermal driver, rework the handling of firmware notifications in it and make it provide a table of generic trip point structures to the core during initialization (Rafael Wysocki). * acpi-thermal: ACPI: thermal: Eliminate code duplication from acpi_thermal_notify() ACPI: thermal: Drop unnecessary thermal zone callbacks ACPI: thermal: Rework thermal_get_trend() ACPI: thermal: Use trip point table to register thermal zones thermal: core: Rework and rename __for_each_thermal_trip() ACPI: thermal: Introduce struct acpi_thermal_trip ACPI: thermal: Carry out trip point updates under zone lock ACPI: thermal: Clean up acpi_thermal_register_thermal_zone() thermal: core: Add priv pointer to struct thermal_trip thermal: core: Introduce thermal_zone_device_exec() thermal: core: Do not handle trip points with invalid temperature ACPI: thermal: Drop redundant local variable from acpi_thermal_resume() ACPI: thermal: Do not attach private data to ACPI handles ACPI: thermal: Drop enabled flag from struct acpi_thermal_active ACPI: thermal: Drop nocrt parameter |
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Eric DeVolder
|
88a6f89944 |
crash: memory and CPU hotplug sysfs attributes
Introduce the crash_hotplug attribute for memory and CPUs for use by
userspace. These attributes directly facilitate the udev rule for
managing userspace re-loading of the crash kernel upon hot un/plug
changes.
For memory, expose the crash_hotplug attribute to the
/sys/devices/system/memory directory. For example:
# udevadm info --attribute-walk /sys/devices/system/memory/memory81
looking at device '/devices/system/memory/memory81':
KERNEL=="memory81"
SUBSYSTEM=="memory"
DRIVER==""
ATTR{online}=="1"
ATTR{phys_device}=="0"
ATTR{phys_index}=="00000051"
ATTR{removable}=="1"
ATTR{state}=="online"
ATTR{valid_zones}=="Movable"
looking at parent device '/devices/system/memory':
KERNELS=="memory"
SUBSYSTEMS==""
DRIVERS==""
ATTRS{auto_online_blocks}=="offline"
ATTRS{block_size_bytes}=="8000000"
ATTRS{crash_hotplug}=="1"
For CPUs, expose the crash_hotplug attribute to the
/sys/devices/system/cpu directory. For example:
# udevadm info --attribute-walk /sys/devices/system/cpu/cpu0
looking at device '/devices/system/cpu/cpu0':
KERNEL=="cpu0"
SUBSYSTEM=="cpu"
DRIVER=="processor"
ATTR{crash_notes}=="277c38600"
ATTR{crash_notes_size}=="368"
ATTR{online}=="1"
looking at parent device '/devices/system/cpu':
KERNELS=="cpu"
SUBSYSTEMS==""
DRIVERS==""
ATTRS{crash_hotplug}=="1"
ATTRS{isolated}==""
ATTRS{kernel_max}=="8191"
ATTRS{nohz_full}==" (null)"
ATTRS{offline}=="4-7"
ATTRS{online}=="0-3"
ATTRS{possible}=="0-7"
ATTRS{present}=="0-3"
With these sysfs attributes in place, it is possible to efficiently
instruct the udev rule to skip crash kernel reloading for kernels
configured with crash hotplug support.
For example, the following is the proposed udev rule change for RHEL
system 98-kexec.rules (as the first lines of the rule file):
# The kernel updates the crash elfcorehdr for CPU and memory changes
SUBSYSTEM=="cpu", ATTRS{crash_hotplug}=="1", GOTO="kdump_reload_end"
SUBSYSTEM=="memory", ATTRS{crash_hotplug}=="1", GOTO="kdump_reload_end"
When examined in the context of 98-kexec.rules, the above rules test if
crash_hotplug is set, and if so, the userspace initiated
unload-then-reload of the crash kernel is skipped.
CPU and memory checks are separated in accordance with CONFIG_HOTPLUG_CPU
and CONFIG_MEMORY_HOTPLUG kernel config options. If an architecture
supports, for example, memory hotplug but not CPU hotplug, then the
/sys/devices/system/memory/crash_hotplug attribute file is present, but
the /sys/devices/system/cpu/crash_hotplug attribute file will NOT be
present. Thus the udev rule skips userspace processing of memory hot
un/plug events, but the udev rule will evaluate false for CPU events, thus
allowing userspace to process CPU hot un/plug events (ie the
unload-then-reload of the kdump capture kernel).
Link: https://lkml.kernel.org/r/20230814214446.6659-5-eric.devolder@oracle.com
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Reviewed-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Akhil Raj <lf32.dev@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Mimi Zohar <zohar@linux.ibm.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Weißschuh <linux@weissschuh.net>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
|
||
|
Palmer Dabbelt
|
7aa7d502e4
|
Merge patch series "riscv: Allow userspace to directly access perf counters"
Alexandre Ghiti <alexghiti@rivosinc.com> says: riscv used to allow direct access to cycle/time/instret counters, bypassing the perf framework, this patchset intends to allow the user to mmap any counter when accessed through perf. **Important**: The default mode is now user access through perf only, not the legacy so some applications will break. However, we introduce a sysctl perf_user_access like arm64 does, which will allow to switch to the legacy mode described above. This version needs openSBI v1.3 *and* a kernel fix that went upstream lately (https://lore.kernel.org/lkml/20230616114831.3186980-1-maz@kernel.org/T/). * b4-shazam-merge: perf: tests: Adapt mmap-basic.c for riscv tools: lib: perf: Implement riscv mmap support Documentation: admin-guide: Add riscv sysctl_perf_user_access drivers: perf: Implement perf event mmap support in the SBI backend drivers: perf: Implement perf event mmap support in the legacy backend riscv: Prepare for user-space perf event mmap support drivers: perf: Rename riscv pmu sbi driver riscv: Make legacy counter enum match the HW numbering include: riscv: Fix wrong include guard in riscv_pmu.h perf: Fix wrong comment about default event_idx Link: https://lore.kernel.org/r/20230802080328.1213905-1-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
||
|
Christophe Leroy
|
4b91dcc2f6 |
Documentation: devices.txt: Fix minors for ttyCPM*
ttyCPM* devices belong to CPM_UART driver at the first place
and that driver provides 6 ports.
Fixes:
|
||
|
Christophe Leroy
|
27681960f0 |
Documentation: devices.txt: Remove ttySIOC*
IOC3 serial driver was removed, remove associated devices
from documentation.
Fixes:
|
||
|
Christophe Leroy
|
e327fdc262 |
Documentation: devices.txt: Remove ttyIOC*
IOC4 serial driver was removed, remove associated devices
from documentation.
Fixes:
|
||
|
Matthew Wilcox (Oracle)
|
de53c05f2a |
mm: add large_rmappable page flag
Stored in the first tail page's flags, this flag replaces the destructor. That removes the last of the destructors, so remove all references to folio_dtor and compound_dtor. Link: https://lkml.kernel.org/r/20230816151201.3655946-9-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
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Matthew Wilcox (Oracle)
|
9c5ccf2db0 |
mm: remove HUGETLB_PAGE_DTOR
We can use a bit in page[1].flags to indicate that this folio belongs to hugetlb instead of using a value in page[1].dtors. That lets folio_test_hugetlb() become an inline function like it should be. We can also get rid of NULL_COMPOUND_DTOR. Link: https://lkml.kernel.org/r/20230816151201.3655946-8-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: David Hildenbrand <david@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com> Cc: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Stefan Roesch
|
b348b5fe2b |
mm/ksm: add pages scanned metric
ksm currently maintains several statistics, which let you determine how successful KSM is at sharing pages. However it does not contain a metric to determine how much work it does. This commit adds the pages scanned metric. This allows the administrator to determine how many pages have been scanned over a period of time. Link: https://lkml.kernel.org/r/20230811193655.2518943-1-shr@devkernel.io Signed-off-by: Stefan Roesch <shr@devkernel.io> Acked-by: David Hildenbrand <david@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel <riel@surriel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Aneesh Kumar K.V
|
2d1f649c7c |
mm/memory_hotplug: support memmap_on_memory when memmap is not aligned to pageblocks
Currently, memmap_on_memory feature is only supported with memory block sizes that result in vmemmap pages covering full page blocks. This is because memory onlining/offlining code requires applicable ranges to be pageblock-aligned, for example, to set the migratetypes properly. This patch helps to lift that restriction by reserving more pages than required for vmemmap space. This helps the start address to be page block aligned with different memory block sizes. Using this facility implies the kernel will be reserving some pages for every memoryblock. This allows the memmap on memory feature to be widely useful with different memory block size values. For ex: with 64K page size and 256MiB memory block size, we require 4 pages to map vmemmap pages, To align things correctly we end up adding a reserve of 28 pages. ie, for every 4096 pages 28 pages get reserved. Link: https://lkml.kernel.org/r/20230808091501.287660-5-aneesh.kumar@linux.ibm.com Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Vishal Verma <vishal.l.verma@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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41a7ed8cfd |
Docs/admin-guide/mm/damon/usage: update for DAMON monitoring target type DAMOS filter
Update DAMON usage document for newly added DAMON monitoring target type DAMOS filter. Link: https://lkml.kernel.org/r/20230802214312.110532-14-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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375af85038 |
Docs/admin-guide/mm/damon/usage: update for address range type DAMOS filter
Update DAMON usage document for the newly added address range type DAMOS filter. Link: https://lkml.kernel.org/r/20230802214312.110532-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendanhiggins@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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ea7f03a441 |
Docs/admin-guide/mm/damon/usage: update for tried_regions/total_bytes
Update the DAMON usage document for newly added schemes/.../tried_regions/total_bytes file and the update_schemes_tried_bytes command. Link: https://lkml.kernel.org/r/20230802213222.109841-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Johannes Weiner
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42c06a0e8e |
mm: kill frontswap
The only user of frontswap is zswap, and has been for a long time. Have swap call into zswap directly and remove the indirection. [hannes@cmpxchg.org: remove obsolete comment, per Yosry] Link: https://lkml.kernel.org/r/20230719142832.GA932528@cmpxchg.org [fengwei.yin@intel.com: don't warn if none swapcache folio is passed to zswap_load] Link: https://lkml.kernel.org/r/20230810095652.3905184-1-fengwei.yin@intel.com Link: https://lkml.kernel.org/r/20230717160227.GA867137@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Yin Fengwei <fengwei.yin@intel.com> Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Nhat Pham <nphamcs@gmail.com> Acked-by: Yosry Ahmed <yosryahmed@google.com> Acked-by: Christoph Hellwig <hch@lst.de> Cc: Domenico Cerasuolo <cerasuolodomenico@gmail.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Vitaly Wool <vitaly.wool@konsulko.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Bjorn Helgaas
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d56b699d76 |
Documentation: Fix typos
Fix typos in Documentation. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20230814212822.193684-4-helgaas@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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David Hildenbrand
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de7cb03db0 |
mm/memory_hotplug: document the signal_pending() check in offline_pages()
Let's update the documentation that any signal is sufficient, and add a comment that not only checking for fatal signals is historical baggage: changing it now could break existing user space. although unlikely. For example, when an app provides a custom SIGALRM handler and triggers memory offlining, the timeout cmd would no longer stop memory offlining, because SIGALRM would no longer be considered a fatal signal. Note that using signal_pending() instead of fatal_signal_pending() is an anti-pattern, but slowly deprecating that behavior to eventually change it in the far future is probably not worth the effort. If this ever becomes relevant for user-space, we might want to rethink. Link: https://lkml.kernel.org/r/20230711174050.603820-1-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Oscar Salvador <osalvador@suse.de> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Axel Rasmussen
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f442ab50f5 |
mm: userfaultfd: document and enable new UFFDIO_POISON feature
Update the userfaultfd API to advertise this feature as part of feature flags and supported ioctls (returned upon registration). Add basic documentation describing the new feature. Link: https://lkml.kernel.org/r/20230707215540.2324998-7-axelrasmussen@google.com Signed-off-by: Axel Rasmussen <axelrasmussen@google.com> Acked-by: Peter Xu <peterx@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Brian Geffon <bgeffon@google.com> Cc: Christian Brauner <brauner@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Gaosheng Cui <cuigaosheng1@huawei.com> Cc: Huang, Ying <ying.huang@intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: James Houghton <jthoughton@google.com> Cc: Jan Alexander Steffens (heftig) <heftig@archlinux.org> Cc: Jiaqi Yan <jiaqiyan@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Muchun Song <muchun.song@linux.dev> Cc: Nadav Amit <namit@vmware.com> Cc: Naoya Horiguchi <naoya.horiguchi@nec.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suleiman Souhlal <suleiman@google.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: T.J. Alumbaugh <talumbau@google.com> Cc: Yu Zhao <yuzhao@google.com> Cc: ZhangPeng <zhangpeng362@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Michal Hocko
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86327e8eb9 |
memcg: drop kmem.limit_in_bytes
kmem.limit_in_bytes (v1 way to limit kernel memory usage) has been deprecated since |
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xu xin
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1a8e843057 |
ksm: consider KSM-placed zeropages when calculating KSM profit
When use_zero_pages is enabled, the calculation of ksm profit is not correct because ksm zero pages is not counted in. So update the calculation of KSM profit including the documentation. Link: https://lkml.kernel.org/r/20230613030942.186041-1-yang.yang29@zte.com.cn Signed-off-by: xu xin <xu.xin16@zte.com.cn> Acked-by: David Hildenbrand <david@redhat.com> Cc: Xiaokai Ran <ran.xiaokai@zte.com.cn> Cc: Yang Yang <yang.yang29@zte.com.cn> Cc: Jiang Xuexin <jiang.xuexin@zte.com.cn> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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xu xin
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e2942062e0 |
ksm: count all zero pages placed by KSM
As pages_sharing and pages_shared don't include the number of zero pages merged by KSM, we cannot know how many pages are zero pages placed by KSM when enabling use_zero_pages, which leads to KSM not being transparent with all actual merged pages by KSM. In the early days of use_zero_pages, zero-pages was unable to get unshared by the ways like MADV_UNMERGEABLE so it's hard to count how many times one of those zeropages was then unmerged. But now, unsharing KSM-placed zero page accurately has been achieved, so we can easily count both how many times a page full of zeroes was merged with zero-page and how many times one of those pages was then unmerged. and so, it helps to estimate memory demands when each and every shared page could get unshared. So we add ksm_zero_pages under /sys/kernel/mm/ksm/ to show the number of all zero pages placed by KSM. Meanwhile, we update the Documentation. Link: https://lkml.kernel.org/r/20230613030934.185944-1-yang.yang29@zte.com.cn Signed-off-by: xu xin <xu.xin16@zte.com.cn> Acked-by: David Hildenbrand <david@redhat.com> Cc: Claudio Imbrenda <imbrenda@linux.ibm.com> Cc: Xuexin Jiang <jiang.xuexin@zte.com.cn> Reviewed-by: Xiaokai Ran <ran.xiaokai@zte.com.cn> Reviewed-by: Yang Yang <yang.yang29@zte.com.cn> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andy Shevchenko
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d0c1f8dc5c |
docs: kernel-parameters: Refer to the correct bitmap function
The parser of the CPU lists is bitmap_parselist() that supports
special notations with the plain numbers. bitmap_parse() never
supported those and will fail in case one will try it.
Fixes:
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Ma Wupeng
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5797f5f9f7 |
doc: update params of memhp_default_state=
Commit
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Vaibhav Jain
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0ceef6e99c |
powerpc/idle: Add support for nohlt
This patch enables config option GENERIC_IDLE_POLL_SETUP for arch powerpc. This adds support for kernel param 'nohlt'. Powerpc kernel also supports another kernel boot-time param called 'powersave' which can also be used to disable all cpu idle-states and forces CPU to an idle-loop similar to what cpu_idle_poll() does. This patch however makes powerpc kernel-parameters better aligned to the generic boot-time parameters. Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20230818050739.827851-1-vaibhav@linux.ibm.com |
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Jarkko Sakkinen
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bff24699b9 |
tpm_tis: Revert "tpm_tis: Disable interrupts on ThinkPad T490s"
Since for MMIO driver using FIFO registers, also known as tpm_tis, the default (and tbh recommended) behaviour is now the polling mode, the "tristate" workaround is no longer for benefit. If someone wants to explicitly enable IRQs for a TPM chip that should be without question allowed. It could very well be a piece hardware in the existing deny list because of e.g. firmware update or something similar. While at it, document the module parameter, as this was not done in 2006 when it first appeared in the mainline. Link: https://lore.kernel.org/linux-integrity/20201015214430.17937-1-jsnitsel@redhat.com/ Link: https://lore.kernel.org/all/1145393776.4829.19.camel@localhost.localdomain/ Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org> |
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Paul E. McKenney
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fe24a0b632 |
Merge branches 'doc.2023.07.14b', 'fixes.2023.08.16a', 'rcu-tasks.2023.07.24a', 'rcuscale.2023.07.14b', 'refscale.2023.07.14b', 'torture.2023.08.14a' and 'torturescripts.2023.07.20a' into HEAD
doc.2023.07.14b: Documentation updates. fixes.2023.08.16a: Miscellaneous fixes. rcu-tasks.2023.07.24a: RCU Tasks updates. rcuscale.2023.07.14b: RCU (updater) scalability test updates. refscale.2023.07.14b: Reference (reader) scalability test updates. torture.2023.08.14a: Other torture-test updates. torturescripts.2023.07.20a: Other torture-test scripting updates. |
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Peter Zijlstra
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42be649dd1 |
x86/cpu: Rename srso_(.*)_alias to srso_alias_\1
For a more consistent namespace. [ bp: Fixup names in the doc too. ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230814121148.976236447@infradead.org |
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Chen Jiahao
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33f0dd973d
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docs: kdump: Update the crashkernel description for riscv
Now "crashkernel=" parameter on riscv has been updated to support crashkernel=X,[high,low]. Through which we can reserve memory region above/within 32bit addressible DMA zone. Here update the parameter description accordingly. Signed-off-by: Chen Jiahao <chenjiahao16@huawei.com> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Acked-by: Baoquan He <bhe@redhat.com> Link: https://lore.kernel.org/r/20230726175000.2536220-3-chenjiahao16@huawei.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
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Alexandre Ghiti
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57972127b2
|
Documentation: admin-guide: Add riscv sysctl_perf_user_access
riscv now uses this sysctl so document its usage for this architecture. Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> |
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Loic Poulain
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45071e1c28 |
init: Add support for rootwait timeout parameter
Add an optional timeout arg to 'rootwait' as the maximum time in seconds to wait for the root device to show up before attempting forced mount of the root filesystem. Use case: In case of device mapper usage for the rootfs (e.g. root=/dev/dm-0), if the mapper is not able to create the virtual block for any reason (wrong arguments, bad dm-verity signature, etc), the `rootwait` param causes the kernel to wait forever. It may however be desirable to only wait for a given time and then panic (force mount) to cause device reset. This gives the bootloader a chance to detect the problem and to take some measures, such as marking the booted partition as bad (for A/B case) or entering a recovery mode. In success case, mounting happens as soon as the root device is ready, unlike the existing 'rootdelay' parameter which performs an unconditional pause. Signed-off-by: Loic Poulain <loic.poulain@linaro.org> Message-Id: <20230813082349.513386-1-loic.poulain@linaro.org> Signed-off-by: Christian Brauner <brauner@kernel.org> |
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Dietmar Eggemann
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5d248bb39f |
torture: Add lock_torture writer_fifo module parameter
This commit adds a module parameter that causes the locktorture writer to run at real-time priority. To use it: insmod /lib/modules/torture.ko random_shuffle=1 insmod /lib/modules/locktorture.ko torture_type=mutex_lock rt_boost=1 rt_boost_factor=50 nested_locks=3 writer_fifo=1 ^^^^^^^^^^^^^ A predecessor to this patch has been helpful to uncover issues with the proxy-execution series. [ paulmck: Remove locktorture-specific code from kernel/torture.c. ] Cc: "Paul E. McKenney" <paulmck@kernel.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Juri Lelli <juri.lelli@redhat.com> Cc: Valentin Schneider <vschneid@redhat.com> Cc: kernel-team@android.com Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com> [jstultz: Include header change to build, reword commit message] Signed-off-by: John Stultz <jstultz@google.com> Acked-by: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Greg Kroah-Hartman
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bbb9e06d2c |
Merge 6.5-rc6 into usb-next
We need the USB and Thunderbolt fixes in here to build on. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Greg Kroah-Hartman
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e75850b457 |
Merge 6.5-rc6 into char-misc-next
We need the char/misc fixes in here as well to build on top of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Arnaldo Carvalho de Melo
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55b2905019 |
Merge remote-tracking branch 'torvalds/master' into perf-tools-next
To pick up some more fixes that went upstream via the perf-tools fixes branch. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Borislav Petkov (AMD)
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09f9f37c32 |
Documentation/srso: Document IBPB aspect and fix formatting
Add a note about the dependency of the User->User mitigation on the previous Spectre v2 IBPB selection. Make the layout moar pretty. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20230809102700.29449-4-bp@alien8.de |
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Borislav Petkov (AMD)
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182ac87070 |
Documentation/hw-vuln: Unify filename specification in index
Most of the index.rst files in Documentation/ refer to other rst files without their file extension in the name. Do that here too. No functional changes. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20230809102700.29449-2-bp@alien8.de |
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Alan Stern
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f176638af4 |
USB: Remove Wireless USB and UWB documentation
Support for Wireless USB and Ultra WideBand was removed in 2020 by
commit
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Tejun Heo
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523a301e66 |
workqueue: Make default affinity_scope dynamically updatable
While workqueue.default_affinity_scope is writable, it only affects workqueues which are created afterwards and isn't very useful. Instead, let's introduce explicit "default" scope and update the effective scope dynamically when workqueue.default_affinity_scope is changed. Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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63c5484e74 |
workqueue: Add multiple affinity scopes and interface to select them
Add three more affinity scopes - WQ_AFFN_CPU, SMT and CACHE - and make CACHE the default. The code changes to actually add the additional scopes are trivial. Also add module parameter "workqueue.default_affinity_scope" to override the default scope and "affinity_scope" sysfs file to configure it per workqueue. wq_dump.py and documentations are updated accordingly. This enables significant flexibility in configuring how unbound workqueues behave. If affinity scope is set to "cpu", it'll behave close to a per-cpu workqueue. On the other hand, "system" removes all locality boundaries. Many modern machines have multiple L3 caches often while being mostly uniform in terms of memory access. Thus, workqueue's previous behavior of spreading work items in each NUMA node had negative performance implications from unncessarily crossing L3 boundaries between issue and execution. However, picking a finer grained affinity scope also has a downside in that an issuer in one group can't utilize CPUs in other groups. While dependent on the specifics of workload, there's usually a noticeable penalty in crossing L3 boundaries, so let's default to CACHE. This issue will be further addressed and documented with examples in future patches. Signed-off-by: Tejun Heo <tj@kernel.org> |
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Tejun Heo
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fcecfa8f27 |
workqueue: Remove module param disable_numa and sysfs knobs pool_ids and numa
Unbound workqueue CPU affinity is going to receive an overhaul and the NUMA specific knobs won't make sense anymore. Remove them. Also, the pool_ids knob was used for debugging and not really meaningful given that there is no visibility into the pools associated with those IDs. Remove it too. A future patch will improve overall visibility. Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
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64094e7e31 |
Mitigate Gather Data Sampling issue
* Add Base GDS mitigation * Support GDS_NO under KVM * Fix a documentation typo -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEV76QKkVc4xCGURexaDWVMHDJkrAFAmTJh5YACgkQaDWVMHDJ krAzAw/8DzjhAYEa7a1AodCBMNg8uNOPnLNoRPPNhaN5Iw6W3zXYDBDKT9PyjAIx RoIM0aHx/oY9nCpK441o25oCWAAyzk6E5/+q9hMa7B4aHUGKqiDUC6L9dC8UiiSN yvoBv4g7F81QnmyazwYI64S6vnbr4Cqe7K/mvVqQ/vbJiugD25zY8mflRV9YAuMk Oe7Ff/mCA+I/kqyKhJE3cf3qNhZ61FsFI886fOSvIE7g4THKqo5eGPpIQxR4mXiU Ri2JWffTaeHr2m0sAfFeLH4VTZxfAgBkNQUEWeG6f2kDGTEKibXFRsU4+zxjn3gl xug+9jfnKN1ceKyNlVeJJZKAfr2TiyUtrlSE5d+subIRKKBaAGgnCQDasaFAluzd aZkOYz30PCebhN+KTrR84FySHCaxnev04jqdtVGAQEDbTvyNagFUdZFGhWijJShV l2l4A0gFSYJmPfPVuuAwOJnnZtA1sRH9oz/Sny3+z9BKloZh+Nc/+Cu9zC8SLjaU BF3Qv2gU9HKTJ+MSy2JrGS52cONfpO5ngFHoOMilZ1KBHrfSb1eiy32PDT+vK60Y PFEmI8SWl7bmrO1snVUCfGaHBsHJSu5KMqwBGmM4xSRzJpyvRe493xC7+nFvqNLY vFOFc4jGeusOXgiLPpfGduppkTGcM7sy75UMLwTSLcQbDK99mus= =ZAPY -----END PGP SIGNATURE----- Merge tag 'gds-for-linus-2023-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/gds fixes from Dave Hansen: "Mitigate Gather Data Sampling issue: - Add Base GDS mitigation - Support GDS_NO under KVM - Fix a documentation typo" * tag 'gds-for-linus-2023-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation/x86: Fix backwards on/off logic about YMM support KVM: Add GDS_NO support to KVM x86/speculation: Add Kconfig option for GDS x86/speculation: Add force option to GDS mitigation x86/speculation: Add Gather Data Sampling mitigation |
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Linus Torvalds
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138bcddb86 |
Add a mitigation for the speculative RAS (Return Address Stack) overflow
vulnerability on AMD processors. In short, this is yet another issue where userspace poisons a microarchitectural structure which can then be used to leak privileged information through a side channel. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmTQs1gACgkQEsHwGGHe VUo1UA/8C34PwJveZDcerdkaxSF+WKx7AjOI/L2ws1qn9YVFA3ItFMgVuFTrlY6c 1eYKYB3FS9fVN3KzGOXGyhho6seHqfY0+8cyYupR+PVLn9rSy7GqHaIMr37FdQ2z yb9xu26v+gsvuPEApazS6MxijYS98u71rHhmg97qsHCnUiMJ01+TaGucntukNJv8 FfwjZJvgeUiBPQ/6IeA/O0413tPPJ9weawPyW+sV1w7NlXjaUVkNXwiq/Xxbt9uI sWwMBjFHpSnhBRaDK8W5Blee/ZfsS6qhJ4jyEKUlGtsElMnZLPHbnrbpxxqA9gyE K+3ZhoHf/W1hhvcZcALNoUHLx0CvVekn0o41urAhPfUutLIiwLQWVbApmuW80fgC DhPedEFu7Wp6Okj5+Bqi/XOsOOWN2WRDSzdAq10o1C+e+fzmkr6y4E6gskfz1zXU ssD9S4+uAJ5bccS5lck4zLffsaA03nAYTlvl1KRP4pOz5G9ln6eyO20ar1WwfGAV o5ZsTJVGQMyVA49QFkksj+kOI3chkmDswPYyGn2y8OfqYXU4Ip4eN+VkjorIAo10 zIec3Z0bCGZ9UUMylUmdtH3KAm8q0wVNoFrUkMEmO8j6nn7ew2BhwLMn4uu+nOnw lX2AG6PNhRLVDVaNgDsWMwejaDsitQPoWRuCIAZ0kQhbeYuwfpM= =73JY -----END PGP SIGNATURE----- Merge tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86/srso fixes from Borislav Petkov: "Add a mitigation for the speculative RAS (Return Address Stack) overflow vulnerability on AMD processors. In short, this is yet another issue where userspace poisons a microarchitectural structure which can then be used to leak privileged information through a side channel" * tag 'x86_bugs_srso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/srso: Tie SBPB bit setting to microcode patch detection x86/srso: Add a forgotten NOENDBR annotation x86/srso: Fix return thunks in generated code x86/srso: Add IBPB on VMEXIT x86/srso: Add IBPB x86/srso: Add SRSO_NO support x86/srso: Add IBPB_BRTYPE support x86/srso: Add a Speculative RAS Overflow mitigation x86/bugs: Increase the x86 bugs vector size to two u32s |
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Linus Torvalds
|
e661f98c82 |
RISC-V Fixes for 6.5-rc5
* A pair of fixes for build-related failures in the selftests. * A fix for a sparse warning in acpi_os_ioremap(). * A fix to restore the kernel PA offset in vmcoreinfo, to fix crash handling. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmTNNYYTHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiZ04EAC6qvmU8Mk7l0qVrDhr8AzuPYhYudQX CPA/iu0XFBY3o52J0ylieGYBWE4pJQC+p3jrYFgeRHHIwxm4QJAGTGk5HEmcBM7b xwsyT1Bf39jjR8DqHE8/cWsMHF1LIwUJGHU1JziU1hsLXZYjn58FoS3Mt3Sd54Mb taAZL+y6L/QY2D/Y3m2YUQy16whl9W4AFb0whndCPjI1Is8xDPIxObeH1bfy8H9/ W3nN83sO/nrbnw6BHmsE24cq2DgW4X3yWza2h9wctyfjyrhjRM/xPYGxssqbScuj QoyRI2w+1TpQi4eui5y76JBZ6imXkq+CfaS53TmW7aYwg3/sgBPO5G/FB8CODXRl Q6GxOnw13FXr29yGubwlsmSYPQUyBESanbSjyrXiMURz5In7VV+MSJcbigTYwbRu jM7R79TTt3X4gzpi+bxheQ6u37xpRoBLAf3IUf1SRRX0eDweyj1mYnMfMYVtBSOE jd7i6q5oTMSNbNBaGATB5vcFFwFbgVRwfjAysEVDJAtxALGm5DZFbv1EpZWeY76R cZDcGQKy+DpQvaYjpwVeaa29yVN0ROQgwJM55luTLvO7SPLGBCjHOtJ8iOnuU0Cv 8yguWIbJ98LcSKbG5ctUWGCbX2NvrNB6yogSKPwGebWsHaakWp9MLQ/tZMPR0nLA e7ni0FlVFMagLg== =ImIa -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - A pair of fixes for build-related failures in the selftests - A fix for a sparse warning in acpi_os_ioremap() - A fix to restore the kernel PA offset in vmcoreinfo, to fix crash handling * tag 'riscv-for-linus-6.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: Documentation: kdump: Add va_kernel_pa_offset for RISCV64 riscv: Export va_kernel_pa_offset in vmcoreinfo RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address selftests: riscv: Fix compilation error with vstate_exec_nolibc.c selftests/riscv: fix potential build failure during the "emit_tests" step |
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Thomas Weißschuh
|
31ed379b7c |
dyndbg: add source filename to prefix
Printing the line number without the file is of limited usefulness.
Knowing the filename also makes it also easier to relate the logged
information to the controlfile.
Example:
# modprobe test_dynamic_debug
# echo 'file test_dynamic_debug.c =pfsl' > /proc/dynamic_debug/control
# echo 1 > /sys/module/test_dynamic_debug/parameters/do_prints
# dmesg | tail -2
[ 71.802212] do_cats:lib/test_dynamic_debug.c:103: test_dd: doing categories
[ 71.802227] do_levels:lib/test_dynamic_debug.c:123: test_dd: doing levels
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Acked-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jason Baron <jbaron@akamai.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20230709-dyndbg-filename-v2-3-fd83beef0925@weissschuh.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Arnaldo Carvalho de Melo
|
bf1842996a |
Merge remote-tracking branch 'torvalds/master' into perf-tools-next
To pick up the fixes that were just merged from perf-tools/perf-tools for v6.5. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Han Dapeng
|
95f5c19c8c |
Documentation: cgroup-v2.rst: Correct number of stats entries
Signed-off-by: Han Dapeng <han-dapeng@foxmail.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Song Shuai
|
640c503d7d
|
Documentation: kdump: Add va_kernel_pa_offset for RISCV64
RISC-V Linux exports "va_kernel_pa_offset" in vmcoreinfo to help
Crash-utility translate the kernel virtual address correctly.
Here adds the definition of "va_kernel_pa_offset".
Fixes:
|
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Michael Ellerman
|
73c58e7e14 |
powerpc: Add HOTPLUG_SMT support
Add support for HOTPLUG_SMT, which enables the generic sysfs SMT support files in /sys/devices/system/cpu/smt, as well as the "nosmt" boot parameter. Implement the recently added hooks to allow partial SMT states, allow any number of threads per core. Tie the config symbol to HOTPLUG_CPU, which enables it on the major platforms that support SMT. If there are other platforms that want the SMT support that can be tweaked in future. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> [ldufour: remove topology_smt_supported] [ldufour: remove topology_smt_threads_supported] [ldufour: select CONFIG_SMT_NUM_THREADS_DYNAMIC] [ldufour: update kernel-parameters.txt] Signed-off-by: Laurent Dufour <ldufour@linux.ibm.com> Link: https://msgid.link/20230705145143.40545-10-ldufour@linux.ibm.com |
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|
Dave Hansen
|
1b0fc0345f |
Documentation/x86: Fix backwards on/off logic about YMM support
These options clearly turn *off* XSAVE YMM support. Correct the
typo.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Fixes:
|
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Randy Dunlap
|
fe1185941b |
Docs: kernel-parameters: sort the LEGEND list
Sort the list of kernel build options and hardware support options. Add a comment that the list should be kept sorted instead of having new options inserted willy nilly. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230725174247.32393-1-rdunlap@infradead.org |
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Krzysztof Pawlaczyk
|
87f8d8f4ba |
docs: cgroup-v1: replace dead CONFIG_MEM_RES_CTRL_SWAP symbol
Commit |
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Yajun Deng
|
bf29bfaa54 |
dma-contiguous: support numa CMA for specified node
The kernel parameter 'cma_pernuma=' only supports reserving the same size of CMA area for each node. We need to reserve different sizes of CMA area for specified nodes if these devices belong to different nodes. Adding another kernel parameter 'numa_cma=' to reserve CMA area for the specified node. If we want to use one of these parameters, we need to enable DMA_NUMA_CMA. At the same time, print the node id in cma_declare_contiguous_nid() if CONFIG_NUMA is enabled. Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Signed-off-by: Christoph Hellwig <hch@lst.de> |
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Yajun Deng
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22e4a348f8 |
dma-contiguous: support per-numa CMA for all architectures
In the commit
|
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Linus Torvalds
|
e6d34ced01 |
TTY/Serial fixes for 6.5-rc4
Here are some small TTY and serial driver fixes for 6.5-rc4 for some reported problems. Included in here is: - TIOCSTI fix for braille readers - documentation fix for minor numbers - MAINTAINERS update for new serial files in -rc1 - minor serial driver fixes for reported problems All of these have been in linux-next with no reported problems. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCZMZCMQ8cZ3JlZ0Brcm9h aC5jb20ACgkQMUfUDdst+ym8fQCdGtm3DH+/BVKEebLUBlTb2Gz3xrIAnjeDVdP3 8Yztt4MNSYi7gvOMHQi5 =e8rX -----END PGP SIGNATURE----- Merge tag 'tty-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial fixes from Greg KH: "Here are some small TTY and serial driver fixes for 6.5-rc4 for some reported problems. Included in here is: - TIOCSTI fix for braille readers - documentation fix for minor numbers - MAINTAINERS update for new serial files in -rc1 - minor serial driver fixes for reported problems All of these have been in linux-next with no reported problems" * tag 'tty-6.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial: 8250_dw: Preserve original value of DLF register tty: serial: sh-sci: Fix sleeping in atomic context serial: sifive: Fix sifive_serial_console_setup() section Documentation: devices.txt: reconcile serial/ucc_uart minor numers MAINTAINERS: Update TTY layer for lists and recently added files tty: n_gsm: fix UAF in gsm_cleanup_mux TIOCSTI: always enable for CAP_SYS_ADMIN |
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Jing Zhang
|
f849ce6baf |
perf docs: Update metric usage for Alibaba's T-Head PMU driver (arm64)
Alibaba's T-Head ali_drw PMU supports DDR bandwidth metrics. Update its usage in the documentation. Reviewed-by: John Garry <john.g.garry@oracle.com> Signed-off-by: Jing Zhang <renyu.zj@linux.alibaba.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Shuai Xue <xueshuai@linux.alibaba.com> Cc: Will Deacon <will@kernel.org> Cc: Zhuo Song <zhuo.song@linux.alibaba.com> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-doc@vger.kernel.org Link: https://lore.kernel.org/r/1690528175-2499-4-git-send-email-renyu.zj@linux.alibaba.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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Borislav Petkov (AMD)
|
fb3bd914b3 |
x86/srso: Add a Speculative RAS Overflow mitigation
Add a mitigation for the speculative return address stack overflow vulnerability found on AMD processors. The mitigation works by ensuring all RET instructions speculate to a controlled location, similar to how speculation is controlled in the retpoline sequence. To accomplish this, the __x86_return_thunk forces the CPU to mispredict every function return using a 'safe return' sequence. To ensure the safety of this mitigation, the kernel must ensure that the safe return sequence is itself free from attacker interference. In Zen3 and Zen4, this is accomplished by creating a BTB alias between the untraining function srso_untrain_ret_alias() and the safe return function srso_safe_ret_alias() which results in evicting a potentially poisoned BTB entry and using that safe one for all function returns. In older Zen1 and Zen2, this is accomplished using a reinterpretation technique similar to Retbleed one: srso_untrain_ret() and srso_safe_ret(). Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> |
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Conor Dooley
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496ea826d1
|
RISC-V: provide Kconfig & commandline options to control parsing "riscv,isa"
As it says on the tin, provide Kconfig option to control parsing the "riscv,isa" devicetree property. If either option is used, the kernel will fall back to parsing "riscv,isa", where "riscv,isa-base" and "riscv,isa-extensions" are not present. The Kconfig options are set up so that the default kernel configuration will enable the fallback path, without needing the commandline option. Suggested-by: Andrew Jones <ajones@ventanamicro.com> Suggested-by: Palmer Dabbelt <palmer@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Link: https://lore.kernel.org/r/20230713-aviator-plausibly-a35662485c2c@wendy Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
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Randy Dunlap
|
e29c3f81eb |
Documentation: devices.txt: reconcile serial/ucc_uart minor numers
Reconcile devices.txt with serial/ucc_uart.c regarding device number assignments. ucc_uart.c supports 4 ports and uses minor devnums 46-49, so update devices.txt with that info. Then update ucc_uart.c's reference to the location of the devices.txt list in the kernel source tree. Fixes: |
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Costa Shulyupin
|
37002bc6b6 |
docs: move s390 under arch
and fix all in-tree references. Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Signed-off-by: Costa Shulyupin <costa.shul@redhat.com> Reviewed-by: Tony Krowiak <akrowiak@linux.ibm.com> Acked-by: Jonathan Corbet <corbet@lwn.net> Acked-by: Heiko Carstens <hca@linux.ibm.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20230718045550.495428-1-costa.shul@redhat.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com> |
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Kim Phillips
|
fd470a8bee |
x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled
Unlike Intel's Enhanced IBRS feature, AMD's Automatic IBRS does not
provide protection to processes running at CPL3/user mode, see section
"Extended Feature Enable Register (EFER)" in the APM v2 at
https://bugzilla.kernel.org/attachment.cgi?id=304652
Explicitly enable STIBP to protect against cross-thread CPL3
branch target injections on systems with Automatic IBRS enabled.
Also update the relevant documentation.
Fixes:
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Randy Dunlap
|
b4047e53ad |
docs: panic: cleanups for panic params
Move 'panic_print' to its correct place in alphabetical order. Add parameter format for 'pause_on_oops'. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230715034811.9665-1-rdunlap@infradead.org |
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Randy Dunlap
|
eb38cc80b9 |
Docs: kernel-parameters: sort arm64 entries
Put the arm64 kernel-parameters entries into alphabetical order. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230715235105.17966-1-rdunlap@infradead.org |
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Daniel Sneddon
|
553a5c03e9 |
x86/speculation: Add force option to GDS mitigation
The Gather Data Sampling (GDS) vulnerability allows malicious software to infer stale data previously stored in vector registers. This may include sensitive data such as cryptographic keys. GDS is mitigated in microcode, and systems with up-to-date microcode are protected by default. However, any affected system that is running with older microcode will still be vulnerable to GDS attacks. Since the gather instructions used by the attacker are part of the AVX2 and AVX512 extensions, disabling these extensions prevents gather instructions from being executed, thereby mitigating the system from GDS. Disabling AVX2 is sufficient, but we don't have the granularity to do this. The XCR0[2] disables AVX, with no option to just disable AVX2. Add a kernel parameter gather_data_sampling=force that will enable the microcode mitigation if available, otherwise it will disable AVX on affected systems. This option will be ignored if cmdline mitigations=off. This is a *big* hammer. It is known to break buggy userspace that uses incomplete, buggy AVX enumeration. Unfortunately, such userspace does exist in the wild: https://www.mail-archive.com/bug-coreutils@gnu.org/msg33046.html [ dhansen: add some more ominous warnings about disabling AVX ] Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> |
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Xiongwei Song
|
ab8aebdc9f |
docs: cgroup-v1: fix typo
"listers" -> "listeners" Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Xiongwei Song
|
fe9ebb8cec |
docs: cgroup-v1: correct the term of Page Cache organization in inode
The radix-tree for Page Cache has been replaced with xarray, see
commit
|
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Daniel Sneddon
|
8974eb5882 |
x86/speculation: Add Gather Data Sampling mitigation
Gather Data Sampling (GDS) is a hardware vulnerability which allows
unprivileged speculative access to data which was previously stored in
vector registers.
Intel processors that support AVX2 and AVX512 have gather instructions
that fetch non-contiguous data elements from memory. On vulnerable
hardware, when a gather instruction is transiently executed and
encounters a fault, stale data from architectural or internal vector
registers may get transiently stored to the destination vector
register allowing an attacker to infer the stale data using typical
side channel techniques like cache timing attacks.
This mitigation is different from many earlier ones for two reasons.
First, it is enabled by default and a bit must be set to *DISABLE* it.
This is the opposite of normal mitigation polarity. This means GDS can
be mitigated simply by updating microcode and leaving the new control
bit alone.
Second, GDS has a "lock" bit. This lock bit is there because the
mitigation affects the hardware security features KeyLocker and SGX.
It needs to be enabled and *STAY* enabled for these features to be
mitigated against GDS.
The mitigation is enabled in the microcode by default. Disable it by
setting gather_data_sampling=off or by disabling all mitigations with
mitigations=off. The mitigation status can be checked by reading:
/sys/devices/system/cpu/vulnerabilities/gather_data_sampling
Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
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Jeffrey Hugo
|
3cb13e18ee |
media: docs: qcom_camss: Update Code Aurora references
source.codeaurora.org is no longer accessible and so the reference links in the documentation are not useful. The content was mirrored over to Code Linaro so lets update the references to point there instead. Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> |
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Mario Limonciello
|
5f641174a1 |
ACPI: thermal: Drop nocrt parameter
The `nocrt` module parameter has no code associated with it and does
nothing. As `crt=-1` has same functionality as what nocrt should be
doing drop `nocrt` and associated documentation.
This should fix a quirk for Gigabyte GA-7ZX that used `nocrt` and
thus didn't function properly.
Fixes:
|
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Paul E. McKenney
|
2d7b2b344c |
rcuscale: Add kfree_by_call_rcu and kfree_mult to documentation
This commit adds the kfree_by_call_rcu and kfree_mult rcuscale module parameters to kernel-parameters.txt. While in the area, it updates to rcuscale.scale_type. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> |
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Paul E. McKenney
|
7221f493c5 |
rcuscale: Add minruntime module parameter
By default, rcuscale collects only 100 points of data per writer, but arranging for all kthreads to be actively collecting (if not recording) data during the time that any kthread might be recording. This works well, but does not allow much time to bring external performance tools to bear. This commit therefore adds a minruntime module parameter that specifies a minimum data-collection interval in seconds. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Paul E. McKenney
|
2226f3dc05 |
rcuscale: Permit blocking delays between writers
Some workloads do isolated RCU work, and this can affect operation latencies. This commit therefore adds a writer_holdoff_jiffies module parameter that causes writers to block for the specified number of jiffies between each pair of consecutive write-side operations. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Paul E. McKenney
|
db13710a03 |
rcu-tasks: Cancel callback laziness if too many callbacks
The various RCU Tasks flavors now do lazy grace periods when there are only asynchronous grace period requests. By default, the system will let 250 milliseconds elapse after the first call_rcu_tasks*() callbacki is queued before starting a grace period. In contrast, synchronous grace period requests such as synchronize_rcu_tasks*() will start a grace period immediately. However, invoking one of the call_rcu_tasks*() functions in a too-tight loop can result in a callback flood, which in turn can exhaust memory if grace periods are delayed for too long. This commit therefore sets a limit so that the grace-period kthread will be awakened when any CPU's callback list expands to contain rcupdate.rcu_task_lazy_lim callbacks elements (defaulting to 32, set to -1 to disable), the grace-period kthread will be awakened, thus cancelling any ongoing laziness and getting out in front of the potential callback flood. Cc: Alexei Starovoitov <ast@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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|
Paul E. McKenney
|
450d461aa6 |
rcu-tasks: Add kernel boot parameters for callback laziness
This commit adds kernel boot parameters for callback laziness, allowing the RCU Tasks flavors to be individually adjusted. Signed-off-by: Paul E. McKenney <paulmck@kernel.org> |
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Randy Dunlap
|
97e6f1351b |
Documentation: admin-guide: correct "it's" to possessive "its"
Correct 2 uses of "it's" to the possessive "its" as needed. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Darrick J. Wong <djwong@kernel.org> Cc: linux-xfs@vger.kernel.org Cc: linux-mm@kvack.org Cc: Jonathan Corbet <corbet@lwn.net> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Link: https://lore.kernel.org/r/20230703232024.8069-1-rdunlap@infradead.org |
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tiozhang
|
ace3c5499e |
workqueue: add cmdline parameter workqueue.unbound_cpus to further constrain wq_unbound_cpumask at boot time
Motivation of doing this is to better improve boot times for devices when we want to prevent our workqueue works from running on some specific CPUs, e,g, some CPUs are busy with interrupts. Signed-off-by: tiozhang <tiozhang@didiglobal.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Linus Torvalds
|
7210de3a32 |
A half-dozen late arriving docs patches. They are mostly fixes, but we
also have a kernel-doc tweak for enums and the long-overdue removal of the outdated and redundant patch-submission comments at the top of the MAINTAINERS file. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmSnR4EPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5YfWIH/0b+gYD0PftjpG1MfPTlvsxm3yiO2IkZR1rX ZEvzMIk3cqDsZuhv8g4Xh3qrn7QHW9JE8XbOdkMDw+Hd1kkmYeweVhsLhcar44ai KPBXCbnd6bU6HcjT/o/AEkYVJzZDmKbt8ALi5C81xu8bWn2iybKgnJv1a3M1PFAx Dr5ne14HTEau5ewYeYPhkC2n1XRIE1BV0k4PdZlQE/67uwhplh9J2P/DiXh3I9DT 0oxh8cZHRVheCkXNYseMWEC5V+xFfh3jP/fvIefuNGCb7AGDSE4s+Wx8I9CbduIN SwFtsqXRm2cQ8aj950T0E4JQZLVY0DJKrIJo0qh3LrfUYTinQx0= =tuod -----END PGP SIGNATURE----- Merge tag 'docs-6.5-2' of git://git.lwn.net/linux Pull mode documentation updates from Jonathan Corbet: "A half-dozen late arriving docs patches. They are mostly fixes, but we also have a kernel-doc tweak for enums and the long-overdue removal of the outdated and redundant patch-submission comments at the top of the MAINTAINERS file" * tag 'docs-6.5-2' of git://git.lwn.net/linux: scripts: kernel-doc: support private / public marking for enums Documentation: KVM: SEV: add a missing backtick Documentation: ACPI: fix typo in ssdt-overlays.rst Fix documentation of panic_on_warn docs: remove the tips on how to submit patches from MAINTAINERS docs: fix typo in zh_TW and zh_CN translation |
||
|
Linus Torvalds
|
15ac468614 |
media updates for v6.5-rc1
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||
|
David Heidelberg
|
29e31a8ee8 |
Documentation: ACPI: fix typo in ssdt-overlays.rst
Signed-off-by: David Heidelberg <david@ixit.cz> Signed-off-by: Jonathan Corbet <corbet@lwn.net> Message-ID: <20230625103305.115484-1-david@ixit.cz> |
||
|
Olaf Hering
|
57ada2358f |
Fix documentation of panic_on_warn
The kernel cmdline option panic_on_warn expects an integer, it is not a
plain option as documented. A number of uses in the tree figured this
already, and use panic_on_warn=1 for their purpose.
Adjust a comment which otherwise may mislead people in the future.
Fixes:
|
||
|
Linus Torvalds
|
d25f002575 |
cxl for v6.5
- Add infrastructure for supporting background commands along with
support for device sanitization and firmware update
- Introduce a CXL performance monitoring unit driver based on the common
definition in the specification.
- Land some preparatory cleanup and refactoring for the anticipated
arrival of CXL type-2 (accelerator devices) and CXL RCH (CXL-v1.1
topology) error handling.
- Rework CPU cache management with respect to region configuration
(device hotplug or other dynamic changes to memory interleaving)
- Fix region reconfiguration vs CXL decoder ordering rules.
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Merge tag 'cxl-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull CXL updates from Dan Williams:
"The highlights in terms of new functionality are support for the
standard CXL Performance Monitor definition that appeared in CXL 3.0,
support for device sanitization (wiping all data from a device),
secure-erase (re-keying encryption of user data), and support for
firmware update. The firmware update support is notable as it reuses
the simple sysfs_upload interface to just cat(1) a blob to a sysfs
file and pipe that to the device.
Additionally there are a substantial number of cleanups and
reorganizations to get ready for RCH error handling (RCH == Restricted
CXL Host == current shipping hardware generation / pre CXL-2.0
topologies) and type-2 (accelerator / vendor specific) devices.
For vendor specific devices they implement a subset of what the
generic type-3 (generic memory expander) driver expects. As a result
the rework decouples optional infrastructure from the core driver
context.
For RCH topologies, where the specification working group did not want
to confuse pre-CXL-aware operating systems, many of the standard
registers are hidden which makes support standard bus features like
AER (PCIe Advanced Error Reporting) difficult. The rework arranges for
the driver to help the PCI-AER core. Bjorn is on board with this
direction but a late regression disocvery means the completion of this
functionality needs to cook a bit longer, so it is code
reorganizations only for now.
Summary:
- Add infrastructure for supporting background commands along with
support for device sanitization and firmware update
- Introduce a CXL performance monitoring unit driver based on the
common definition in the specification.
- Land some preparatory cleanup and refactoring for the anticipated
arrival of CXL type-2 (accelerator devices) and CXL RCH (CXL-v1.1
topology) error handling.
- Rework CPU cache management with respect to region configuration
(device hotplug or other dynamic changes to memory interleaving)
- Fix region reconfiguration vs CXL decoder ordering rules"
* tag 'cxl-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (51 commits)
cxl: Fix one kernel-doc comment
cxl/pci: Use correct flag for sanitize polling
docs: perf: Minimal introduction the the CXL PMU device and driver
perf: CXL Performance Monitoring Unit driver
tools/testing/cxl: add firmware update emulation to CXL memdevs
tools/testing/cxl: Use named effects for the Command Effect Log
tools/testing/cxl: Fix command effects for inject/clear poison
cxl: add a firmware update mechanism using the sysfs firmware loader
cxl/test: Add Secure Erase opcode support
cxl/mem: Support Secure Erase
cxl/test: Add Sanitize opcode support
cxl/mem: Wire up Sanitization support
cxl/mbox: Add sanitization handling machinery
cxl/mem: Introduce security state sysfs file
cxl/mbox: Allow for IRQ_NONE case in the isr
Revert "cxl/port: Enable the HDM decoder capability for switch ports"
cxl/memdev: Formalize endpoint port linkage
cxl/pci: Unconditionally unmask 256B Flit errors
cxl/region: Manage decoder target_type at decoder-attach time
cxl/hdm: Default CXL_DEVTYPE_DEVMEM decoders to CXL_DECODER_DEVMEM
...
|
||
|
Linus Torvalds
|
9c3255a8f3 |
platform-drivers-x86 for v6.5-1
Highlights:
- AMD PMC and PMF drivers:
- Various bugfixes
- Improved debugging support
- Intel PMC:
- Refactor to support hw with multiple PMCs
- Various other improvements / new hw support
- Intel Speed Select Technology (ISST):
- TPMI Uncore Frequency + Cluster Level Power Controls
- Various bugfixes
- tools/intel-speed-select: Misc. improvements
- Dell-DDV: Add documentation
- INT3472 ACPI camera sensor glue code:
- Evaluate device's _DSM method to control imaging clock
- Drop the need to have a table with per sensor-model info
- Lenovo Yogabook: Refactor / rework to also support Android models
- Think-LMI: Multiple improvements and fixes
- WMI: Add proper API documentation for the WMI bus
- x86-android-tablets: Misc. new hw support
- Miscellaneous other cleanups / fixes
The following is an automated git shortlog grouped by driver:
ISST:
- Fix usage counter
- Reset default callback on unregister
Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-hans:
- Merge remote-tracking branch 'intel-speed-select/intel-sst' into review-hans
apple-gmux:
- don't use be32_to_cpu and cpu_to_be32
asus-tf103c-dock:
- Switch back to use struct i2c_driver's .probe()
dell-ddv:
- Update ABI documentation
- Add documentation
dell-sysman:
- Improve instance detection
gigabyte:
- constify pointers to hwmon_channel_info
gigabyte-wmi:
- remove allowlist
hp:
- constify pointers to hwmon_channel_info
hp-wmi:
- Add thermal profile for Victus 16-d1xxx
- Add HP Envy special key support
- Add HP WMI camera switch
int3472:
- discrete: Log a warning if the pin-numbers don't match
- discrete: Use FIELD_GET() on the GPIO _DSM return value
- discrete: Add alternative "AVDD" regulator supply name
- discrete: Add support for 1 GPIO regulator shared between 2 sensors
- discrete: Remove sensor_config-s
- discrete: Drop GPIO remapping support
- Switch back to use struct i2c_driver's .probe()
- Evaluate device's _DSM method to control imaging clock
intel/pmc:
- Add Meteor Lake IOE-M PMC related maps
- Add Meteor Lake IOE-P PMC related maps
- Use SSRAM to discover pwrm base address of primary PMC
- Discover PMC devices
- Enable debugfs multiple PMC support
- Add support to handle multiple PMCs
- Combine core_init() and core_configure()
- Update maps for Meteor Lake P/M platforms
- Remove Meteor Lake S platform support
lenovo-yogabook:
- add I2C dependency
- Rename lenovo-yogabook-wmi to lenovo-yogabook
- Add keyboard backlight control to platform driver
- Add platform driver support
- Add YB_KBD_BL_MAX define
- Group WMI specific code together
- Drop _wmi_ from remaining generic symbols
- Add a yogabook_toggle_digitizer_mode() helper function
- Abstract kbd backlight setting
- Stop checking adev->power.state
- Split probe() into generic and WMI specific parts
- Use PMIC LED driver for pen icon LED control
- Add dev local variable to probe()
- Store dev instead of wdev in drvdata struct
- Switch to DEFINE_SIMPLE_DEV_PM_OPS()
- Simplify gpio lookup table cleanup
- Set default keyboard backligh brightness on probe()
- Reprobe devices on remove()
- Fix work race on remove()
mlxbf-bootctl:
- Add sysfs file for BlueField boot log
platform/surface:
- surface3_power: Switch back to use struct i2c_driver's .probe()
platform/x86/amd:
- pmc: Update metrics table info for Pink Sardine
- pmc: Add helper function to check the cpu id
- pmc: Get STB DRAM size from PMFW
- pmc: Pass true/false to bool argument
platform/x86/amd/pmf:
- Fix compiler warnings in static slider
- Add PMF debug facilities
- Add PMF acpi debug support
platform/x86/dell/dell-rbtn:
- Fix resources leaking on error path
platform/x86/intel:
- tpmi: Remove hardcoded unit and offset
platform/x86/intel-uncore-freq:
- tpmi: Provide cluster level control
- Support for cluster level controls
- Uncore frequency control via TPMI
platform/x86/intel/pmc:
- Add resume callback
platform/x86/intel/pmc/mtl:
- Put devices in D3 during resume
system76:
- constify pointers to hwmon_channel_info
think-lmi:
- Don't display unnecessary authentication settings
- Correct NVME index default
- Correct NVME password handling
- Update password fields to use BIT
- Update password attribute comments
- Correct System password interface
- Enable opcode support on BIOS settings
- mutex protection around multiple WMI calls
thinkpad_acpi:
- Fix lkp-tests warnings for platform profiles
tools/power/x86/intel-speed-select:
- v1.16 release
- Fix json formatting issue
- Adjust scope of core-power config
toshiba:
- constify pointers to hwmon_channel_info
wmi:
- Allow retrieving the number of WMI object instances
- Add device specific documentation
- Add documentation
- Mark GUID-based WMI interface as deprecated
- Add kernel doc comments
x86-android-tablets:
- Add support for extra buttons on Cyberbook T116
- Add support for more then 1 gpio_key
- Add Lenovo Yoga Book lid switch
- Fix Bluetooth on Lenovo Yoga Book
- Add Nextbook Ares 8A data
- Remove unnecessary invalid_aei_gpiochip settings
- Add ALS sensor support for Yoga Tablet 2 1050/830 series
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Merge tag 'platform-drivers-x86-v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Hans de Goede:
"AMD PMC and PMF drivers:
- Various bugfixes
- Improved debugging support
Intel PMC:
- Refactor to support hw with multiple PMCs
- Various other improvements / new hw support
Intel Speed Select Technology (ISST):
- TPMI Uncore Frequency + Cluster Level Power Controls
- Various bugfixes
- tools/intel-speed-select: Misc improvements
Dell-DDV: Add documentation
INT3472 ACPI camera sensor glue code:
- Evaluate device's _DSM method to control imaging clock
- Drop the need to have a table with per sensor-model info
Lenovo Yogabook:
- Refactor / rework to also support Android models
Think-LMI:
- Multiple improvements and fixes
WMI:
- Add proper API documentation for the WMI bus
x86-android-tablets:
- Misc new hw support
Miscellaneous other cleanups / fixes"
* tag 'platform-drivers-x86-v6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (91 commits)
platform/x86:intel/pmc: Add Meteor Lake IOE-M PMC related maps
platform/x86:intel/pmc: Add Meteor Lake IOE-P PMC related maps
platform/x86:intel/pmc: Use SSRAM to discover pwrm base address of primary PMC
platform/x86:intel/pmc: Discover PMC devices
platform/x86:intel/pmc: Enable debugfs multiple PMC support
platform/x86:intel/pmc: Add support to handle multiple PMCs
platform/x86:intel/pmc: Combine core_init() and core_configure()
platform/x86:intel/pmc: Update maps for Meteor Lake P/M platforms
platform/x86/intel: tpmi: Remove hardcoded unit and offset
platform/x86: int3472: discrete: Log a warning if the pin-numbers don't match
platform/x86: int3472: discrete: Use FIELD_GET() on the GPIO _DSM return value
platform/x86: int3472: discrete: Add alternative "AVDD" regulator supply name
platform/x86: int3472: discrete: Add support for 1 GPIO regulator shared between 2 sensors
platform/x86: int3472: discrete: Remove sensor_config-s
platform/x86: int3472: discrete: Drop GPIO remapping support
platform/x86: apple-gmux: don't use be32_to_cpu and cpu_to_be32
platform/x86/dell/dell-rbtn: Fix resources leaking on error path
platform/x86: ISST: Fix usage counter
platform/x86: ISST: Reset default callback on unregister
platform/x86: int3472: Switch back to use struct i2c_driver's .probe()
...
|
||
|
Linus Torvalds
|
6cdbb0907a |
- Update DM crypt to allocate compound pages if possible.
- Fix DM crypt target's crypt_ctr_cipher_new return value on invalid
AEAD cipher.
- Fix DM flakey testing target's write bio corruption feature to
corrupt the data of a cloned bio instead of the original.
- Add random_read_corrupt and random_write_corrupt features to DM
flakey target.
- Fix ABBA deadlock in DM thin metadata by resetting associated bufio
client rather than destroying and recreating it.
- A couple other small DM thinp cleanups.
- Update DM core to support disabling block core IO stats accounting
and optimize away code that isn't needed if stats are disabled.
- Other small DM core cleanups.
- Improve DM integrity target to not require so much memory on 32 bit
systems. Also only allocate the recalculate buffer as needed (and
increasingly reduce its size on allocation failure).
- Update DM integrity to use %*ph for printing hexdump of a small
buffer. Also update DM integrity documentation.
- Various DM core ioctl interface hardening. Now more careful about
alignment of structures and processing of input passed to the kernel
from userspace. Also disallow the creation of DM devices named
"control", "." or ".."
- Eliminate GFP_NOIO workarounds for __vmalloc and kvmalloc in DM
core's ioctl and bufio code.
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Merge tag 'for-6.5/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- Update DM crypt to allocate compound pages if possible
- Fix DM crypt target's crypt_ctr_cipher_new return value on invalid
AEAD cipher
- Fix DM flakey testing target's write bio corruption feature to
corrupt the data of a cloned bio instead of the original
- Add random_read_corrupt and random_write_corrupt features to DM
flakey target
- Fix ABBA deadlock in DM thin metadata by resetting associated bufio
client rather than destroying and recreating it
- A couple other small DM thinp cleanups
- Update DM core to support disabling block core IO stats accounting
and optimize away code that isn't needed if stats are disabled
- Other small DM core cleanups
- Improve DM integrity target to not require so much memory on 32 bit
systems. Also only allocate the recalculate buffer as needed (and
increasingly reduce its size on allocation failure)
- Update DM integrity to use %*ph for printing hexdump of a small
buffer. Also update DM integrity documentation
- Various DM core ioctl interface hardening. Now more careful about
alignment of structures and processing of input passed to the kernel
from userspace.
Also disallow the creation of DM devices named "control", "." or ".."
- Eliminate GFP_NOIO workarounds for __vmalloc and kvmalloc in DM
core's ioctl and bufio code
* tag 'for-6.5/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (28 commits)
dm: get rid of GFP_NOIO workarounds for __vmalloc and kvmalloc
dm integrity: scale down the recalculate buffer if memory allocation fails
dm integrity: only allocate recalculate buffer when needed
dm integrity: reduce vmalloc space footprint on 32-bit architectures
dm ioctl: Refuse to create device named "." or ".."
dm ioctl: Refuse to create device named "control"
dm ioctl: Avoid double-fetch of version
dm ioctl: structs and parameter strings must not overlap
dm ioctl: Avoid pointer arithmetic overflow
dm ioctl: Check dm_target_spec is sufficiently aligned
Documentation: dm-integrity: Document an example of how the tunables relate.
Documentation: dm-integrity: Document default values.
Documentation: dm-integrity: Document the meaning of "buffer".
Documentation: dm-integrity: Fix minor grammatical error.
dm integrity: Use %*ph for printing hexdump of a small buffer
dm thin: disable discards for thin-pool if no_discard_passdown
dm: remove stale/redundant dm_internal_{suspend,resume} prototypes in dm.h
dm: skip dm-stats work in alloc_io() unless needed
dm: avoid needless dm_io access if all IO accounting is disabled
dm: support turning off block-core's io stats accounting
...
|
||
|
Linus Torvalds
|
533925cb76 |
RISC-V Patches for the 6.5 Merge Window, Part 1
* Support for ACPI. * Various cleanups to the ISA string parsing, including making them case-insensitive * Support for the vector extension. * Support for independent irq/softirq stacks. * Our CPU DT binding now has "unevaluatedProperties: false" -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEKzw3R0RoQ7JKlDp6LhMZ81+7GIkFAmSe70ATHHBhbG1lckBk YWJiZWx0LmNvbQAKCRAuExnzX7sYiWNPD/0ZfSdQ0A/gMVOzAD4zFKPEqQ6ffW2V Zy6Jo7UDNqKsiai7QA4XB1uyYIv/y1yUKJ0oeBVcA9Nzyq+TW9QDcApDBTabxAUI agY19YKw6VVZ+p7I9sMsf6EbdJdkNfSAzcQACPxb4ScEoaf9X+oAK5qgXuRuWluh qQuVkkJlgWc/t1cuUkrRdJmHQYvjP3zL7z4o344q2IVpXJkNNu0GeP+HbF8BYKcA +I/TTA5JY3kCIaxkpF2rU6pE6T5T9xrPmRYZ7bZoPUPnbL+M8As/jx3ym52Y4WGp kf8pgkxixOjU64kVJOH66CA8GaOiaAH/ptjQb0ZmCaGrHhr7aOT9HrkX4rU1lS8T stPphfM4gGPcCoPgRqSl+mEhBzjII8maOBLtbricAoQi6efRq8fzoOGaif/QpCbc 6n0LGS4nQPGVyD3rAPfHxxfrlGJR+SsgyDvjZoDhqauFglims14GnK+eBeO8zrui Aj/uuAS63VIYprJWC1NOBJlU2WKZiOGhCANpZ6W6SH21PYn2WjsVILqaGh+WN8ZO KOHxZNaN8fQag0Yg7oNAUb7l6S0DHYtJIksFnFW2Rf2+VT58RAMYRQbpbhr7Tqr+ jLgIR8PkFrBERHE49IqLGhAxGDnNzAUysMRw9pIk7WIre2Jt4wPqUdl+ee+5ErIX jiYfSFZw9q28UA== =Fpq8 -----END PGP SIGNATURE----- Merge tag 'riscv-for-linus-6.5-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V updates from Palmer Dabbelt: - Support for ACPI - Various cleanups to the ISA string parsing, including making them case-insensitive - Support for the vector extension - Support for independent irq/softirq stacks - Our CPU DT binding now has "unevaluatedProperties: false" * tag 'riscv-for-linus-6.5-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (78 commits) riscv: hibernate: remove WARN_ON in save_processor_state dt-bindings: riscv: cpus: switch to unevaluatedProperties: false dt-bindings: riscv: cpus: add a ref the common cpu schema riscv: stack: Add config of thread stack size riscv: stack: Support HAVE_SOFTIRQ_ON_OWN_STACK riscv: stack: Support HAVE_IRQ_EXIT_ON_IRQ_STACK RISC-V: always report presence of extensions formerly part of the base ISA dt-bindings: riscv: explicitly mention assumption of Zicntr & Zihpm support RISC-V: remove decrement/increment dance in ISA string parser RISC-V: rework comments in ISA string parser RISC-V: validate riscv,isa at boot, not during ISA string parsing RISC-V: split early & late of_node to hartid mapping RISC-V: simplify register width check in ISA string parsing perf: RISC-V: Limit the number of counters returned from SBI riscv: replace deprecated scall with ecall riscv: uprobes: Restore thread.bad_cause riscv: mm: try VMA lock-based page fault handling first riscv: mm: Pre-allocate PGD entries for vmalloc/modules area RISC-V: hwprobe: Expose Zba, Zbb, and Zbs RISC-V: Track ISA extensions per hart ... |
||
|
Linus Torvalds
|
d35ac6ac0e |
IOMMU Updates for Linux v6.5
Including:
- Core changes:
- iova_magazine_alloc() optimization
- Make flush-queue an IOMMU driver capability
- Consolidate the error handling around device attachment
- AMD IOMMU changes:
- AVIC Interrupt Remapping Improvements
- Some minor fixes and cleanups
- Intel VT-d changes from Lu Baolu:
- Small and misc cleanups
- ARM-SMMU changes from Will Deacon:
- Device-tree binding updates:
* Add missing clocks for SC8280XP and SA8775 Adreno SMMUs
* Add two new Qualcomm SMMUs in SDX75 and SM6375
- Workarounds for Arm MMU-700 errata:
* 1076982: Avoid use of SEV-based cmdq wakeup
* 2812531: Terminate command batches with a CMD_SYNC
* Enforce single-stage translation to avoid nesting-related errata
- Set the correct level hint for range TLB invalidation on teardown
- Some other minor fixes and cleanups (including Freescale PAMU and
virtio-iommu changes)
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Merge tag 'iommu-updates-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu updates from Joerg Roedel:
"Core changes:
- iova_magazine_alloc() optimization
- Make flush-queue an IOMMU driver capability
- Consolidate the error handling around device attachment
AMD IOMMU changes:
- AVIC Interrupt Remapping Improvements
- Some minor fixes and cleanups
Intel VT-d changes from Lu Baolu:
- Small and misc cleanups
ARM-SMMU changes from Will Deacon:
- Device-tree binding updates:
- Add missing clocks for SC8280XP and SA8775 Adreno SMMUs
- Add two new Qualcomm SMMUs in SDX75 and SM6375
- Workarounds for Arm MMU-700 errata:
- 1076982: Avoid use of SEV-based cmdq wakeup
- 2812531: Terminate command batches with a CMD_SYNC
- Enforce single-stage translation to avoid nesting-related errata
- Set the correct level hint for range TLB invalidation on teardown
.. and some other minor fixes and cleanups (including Freescale PAMU
and virtio-iommu changes)"
* tag 'iommu-updates-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (50 commits)
iommu/vt-d: Remove commented-out code
iommu/vt-d: Remove two WARN_ON in domain_context_mapping_one()
iommu/vt-d: Handle the failure case of dmar_reenable_qi()
iommu/vt-d: Remove unnecessary (void*) conversions
iommu/amd: Remove extern from function prototypes
iommu/amd: Use BIT/BIT_ULL macro to define bit fields
iommu/amd: Fix DTE_IRQ_PHYS_ADDR_MASK macro
iommu/amd: Fix compile error for unused function
iommu/amd: Improving Interrupt Remapping Table Invalidation
iommu/amd: Do not Invalidate IRT when IRTE caching is disabled
iommu/amd: Introduce Disable IRTE Caching Support
iommu/amd: Remove the unused struct amd_ir_data.ref
iommu/amd: Switch amd_iommu_update_ga() to use modify_irte_ga()
iommu/arm-smmu-v3: Set TTL invalidation hint better
iommu/arm-smmu-v3: Document nesting-related errata
iommu/arm-smmu-v3: Add explicit feature for nesting
iommu/arm-smmu-v3: Document MMU-700 erratum 2812531
iommu/arm-smmu-v3: Work around MMU-600 erratum 1076982
dt-bindings: arm-smmu: Add SDX75 SMMU compatible
dt-bindings: arm-smmu: Add SM6375 GPU SMMU
...
|
||
|
Linus Torvalds
|
b775d6c585 |
- added support for TP-Link HC220 G5 v1
- added support for Wifi/Bluetooth on CI20
- reworked Ralink clock and reset handling
- cleanups and fixes
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Merge tag 'mips_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- add support for TP-Link HC220 G5 v1
- add support for Wifi/Bluetooth on CI20
- rework Ralink clock and reset handling
- cleanups and fixes
* tag 'mips_6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (58 commits)
MIPS: Loongson64: DTS: Add RTC support to Loongson-2K1000
MIPS: Loongson64: DTS: Add RTC support to LS7A PCH
MIPS: OCTEON: octeon-usb: cleanup divider calculation
MIPS: OCTEON: octeon-usb: introduce dwc3_octeon_{read,write}q
MIPS: OCTEON: octeon-usb: move gpio config to separate function
MIPS: OCTEON: octeon-usb: use bitfields for shim register
MIPS: OCTEON: octeon-usb: use bitfields for host config register
MIPS: OCTEON: octeon-usb: use bitfields for control register
MIPS: OCTEON: octeon-usb: add all register offsets
mips: ralink: match all supported system controller compatible strings
MIPS: dec: prom: Address -Warray-bounds warning
MIPS: DTS: CI20: Raise VDDCORE voltage to 1.125 volts
clk: ralink: mtmips: Fix uninitialized use of ret in mtmips_register_{fixed,factor}_clocks()
mips: ralink: introduce commonly used remap node function
mips: pci-mt7620: use dev_info() to log PCIe device detection result
mips: pci-mt7620: do not print NFTS register value as error log
MAINTAINERS: add Mediatek MTMIPS Clock maintainer
mips: ralink: get cpu rate from new driver code
mips: ralink: remove reset related code
mips: ralink: mt7620: remove clock related code
...
|
||
|
Linus Torvalds
|
3a8a670eee |
Networking changes for 6.5.
Core
----
- Rework the sendpage & splice implementations. Instead of feeding
data into sockets page by page extend sendmsg handlers to support
taking a reference on the data, controlled by a new flag called
MSG_SPLICE_PAGES. Rework the handling of unexpected-end-of-file
to invoke an additional callback instead of trying to predict what
the right combination of MORE/NOTLAST flags is.
Remove the MSG_SENDPAGE_NOTLAST flag completely.
- Implement SCM_PIDFD, a new type of CMSG type analogous to
SCM_CREDENTIALS, but it contains pidfd instead of plain pid.
- Enable socket busy polling with CONFIG_RT.
- Improve reliability and efficiency of reporting for ref_tracker.
- Auto-generate a user space C library for various Netlink families.
Protocols
---------
- Allow TCP to shrink the advertised window when necessary, prevent
sk_rcvbuf auto-tuning from growing the window all the way up to
tcp_rmem[2].
- Use per-VMA locking for "page-flipping" TCP receive zerocopy.
- Prepare TCP for device-to-device data transfers, by making sure
that payloads are always attached to skbs as page frags.
- Make the backoff time for the first N TCP SYN retransmissions
linear. Exponential backoff is unnecessarily conservative.
- Create a new MPTCP getsockopt to retrieve all info (MPTCP_FULL_INFO).
- Avoid waking up applications using TLS sockets until we have
a full record.
- Allow using kernel memory for protocol ioctl callbacks, paving
the way to issuing ioctls over io_uring.
- Add nolocalbypass option to VxLAN, forcing packets to be fully
encapsulated even if they are destined for a local IP address.
- Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
in-kernel ECMP implementation (e.g. Open vSwitch) select the same
link for all packets. Support L4 symmetric hashing in Open vSwitch.
- PPPoE: make number of hash bits configurable.
- Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
(ipconfig).
- Add layer 2 miss indication and filtering, allowing higher layers
(e.g. ACL filters) to make forwarding decisions based on whether
packet matched forwarding state in lower devices (bridge).
- Support matching on Connectivity Fault Management (CFM) packets.
- Hide the "link becomes ready" IPv6 messages by demoting their
printk level to debug.
- HSR: don't enable promiscuous mode if device offloads the proto.
- Support active scanning in IEEE 802.15.4.
- Continue work on Multi-Link Operation for WiFi 7.
BPF
---
- Add precision propagation for subprogs and callbacks. This allows
maintaining verification efficiency when subprograms are used,
or in fact passing the verifier at all for complex programs,
especially those using open-coded iterators.
- Improve BPF's {g,s}setsockopt() length handling. Previously BPF
assumed the length is always equal to the amount of written data.
But some protos allow passing a NULL buffer to discover what
the output buffer *should* be, without writing anything.
- Accept dynptr memory as memory arguments passed to helpers.
- Add routing table ID to bpf_fib_lookup BPF helper.
- Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands.
- Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
maps as read-only).
- Show target_{obj,btf}_id in tracing link fdinfo.
- Addition of several new kfuncs (most of the names are self-explanatory):
- Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
and bpf_dynptr_clone().
- bpf_task_under_cgroup()
- bpf_sock_destroy() - force closing sockets
- bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
Netfilter
---------
- Relax set/map validation checks in nf_tables. Allow checking
presence of an entry in a map without using the value.
- Increase ip_vs_conn_tab_bits range for 64BIT builds.
- Allow updating size of a set.
- Improve NAT tuple selection when connection is closing.
Driver API
----------
- Integrate netdev with LED subsystem, to allow configuring HW
"offloaded" blinking of LEDs based on link state and activity
(i.e. packets coming in and out).
- Support configuring rate selection pins of SFP modules.
- Factor Clause 73 auto-negotiation code out of the drivers, provide
common helper routines.
- Add more fool-proof helpers for managing lifetime of MDIO devices
associated with the PCS layer.
- Allow drivers to report advanced statistics related to Time Aware
scheduler offload (taprio).
- Allow opting out of VF statistics in link dump, to allow more VFs
to fit into the message.
- Split devlink instance and devlink port operations.
New hardware / drivers
----------------------
- Ethernet:
- Synopsys EMAC4 IP support (stmmac)
- Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
- Marvell 88E6250 7 port switches
- Microchip LAN8650/1 Rev.B0 PHYs
- MediaTek MT7981/MT7988 built-in 1GE PHY driver
- WiFi:
- Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
- Realtek RTL8723DS (SDIO variant)
- Realtek RTL8851BE
- CAN:
- Fintek F81604
Drivers
-------
- Ethernet NICs:
- Intel (100G, ice):
- support dynamic interrupt allocation
- use meta data match instead of VF MAC addr on slow-path
- nVidia/Mellanox:
- extend link aggregation to handle 4, rather than just 2 ports
- spawn sub-functions without any features by default
- OcteonTX2:
- support HTB (Tx scheduling/QoS) offload
- make RSS hash generation configurable
- support selecting Rx queue using TC filters
- Wangxun (ngbe/txgbe):
- add basic Tx/Rx packet offloads
- add phylink support (SFP/PCS control)
- Freescale/NXP (enetc):
- report TAPRIO packet statistics
- Solarflare/AMD:
- support matching on IP ToS and UDP source port of outer header
- VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
- add devlink dev info support for EF10
- Virtual NICs:
- Microsoft vNIC:
- size the Rx indirection table based on requested configuration
- support VLAN tagging
- Amazon vNIC:
- try to reuse Rx buffers if not fully consumed, useful for ARM
servers running with 16kB pages
- Google vNIC:
- support TCP segmentation of >64kB frames
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- enable USXGMII (88E6191X)
- Microchip:
- lan966x: add support for Egress Stage 0 ACL engine
- lan966x: support mapping packet priority to internal switch
priority (based on PCP or DSCP)
- Ethernet PHYs:
- Broadcom PHYs:
- support for Wake-on-LAN for BCM54210E/B50212E
- report LPI counter
- Microsemi PHYs: support RGMII delay configuration (VSC85xx)
- Micrel PHYs: receive timestamp in the frame (LAN8841)
- Realtek PHYs: support optional external PHY clock
- Altera TSE PCS: merge the driver into Lynx PCS which it is
a variant of
- CAN: Kvaser PCIEcan:
- support packet timestamping
- WiFi:
- Intel (iwlwifi):
- major update for new firmware and Multi-Link Operation (MLO)
- configuration rework to drop test devices and split
the different families
- support for segmented PNVM images and power tables
- new vendor entries for PPAG (platform antenna gain) feature
- Qualcomm 802.11ax (ath11k):
- Multiple Basic Service Set Identifier (MBSSID) and
Enhanced MBSSID Advertisement (EMA) support in AP mode
- support factory test mode
- RealTek (rtw89):
- add RSSI based antenna diversity
- support U-NII-4 channels on 5 GHz band
- RealTek (rtl8xxxu):
- AP mode support for 8188f
- support USB RX aggregation for the newer chips
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking changes from Jakub Kicinski:
"WiFi 7 and sendpage changes are the biggest pieces of work for this
release. The latter will definitely require fixes but I think that we
got it to a reasonable point.
Core:
- Rework the sendpage & splice implementations
Instead of feeding data into sockets page by page extend sendmsg
handlers to support taking a reference on the data, controlled by a
new flag called MSG_SPLICE_PAGES
Rework the handling of unexpected-end-of-file to invoke an
additional callback instead of trying to predict what the right
combination of MORE/NOTLAST flags is
Remove the MSG_SENDPAGE_NOTLAST flag completely
- Implement SCM_PIDFD, a new type of CMSG type analogous to
SCM_CREDENTIALS, but it contains pidfd instead of plain pid
- Enable socket busy polling with CONFIG_RT
- Improve reliability and efficiency of reporting for ref_tracker
- Auto-generate a user space C library for various Netlink families
Protocols:
- Allow TCP to shrink the advertised window when necessary, prevent
sk_rcvbuf auto-tuning from growing the window all the way up to
tcp_rmem[2]
- Use per-VMA locking for "page-flipping" TCP receive zerocopy
- Prepare TCP for device-to-device data transfers, by making sure
that payloads are always attached to skbs as page frags
- Make the backoff time for the first N TCP SYN retransmissions
linear. Exponential backoff is unnecessarily conservative
- Create a new MPTCP getsockopt to retrieve all info
(MPTCP_FULL_INFO)
- Avoid waking up applications using TLS sockets until we have a full
record
- Allow using kernel memory for protocol ioctl callbacks, paving the
way to issuing ioctls over io_uring
- Add nolocalbypass option to VxLAN, forcing packets to be fully
encapsulated even if they are destined for a local IP address
- Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
in-kernel ECMP implementation (e.g. Open vSwitch) select the same
link for all packets. Support L4 symmetric hashing in Open vSwitch
- PPPoE: make number of hash bits configurable
- Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
(ipconfig)
- Add layer 2 miss indication and filtering, allowing higher layers
(e.g. ACL filters) to make forwarding decisions based on whether
packet matched forwarding state in lower devices (bridge)
- Support matching on Connectivity Fault Management (CFM) packets
- Hide the "link becomes ready" IPv6 messages by demoting their
printk level to debug
- HSR: don't enable promiscuous mode if device offloads the proto
- Support active scanning in IEEE 802.15.4
- Continue work on Multi-Link Operation for WiFi 7
BPF:
- Add precision propagation for subprogs and callbacks. This allows
maintaining verification efficiency when subprograms are used, or
in fact passing the verifier at all for complex programs,
especially those using open-coded iterators
- Improve BPF's {g,s}setsockopt() length handling. Previously BPF
assumed the length is always equal to the amount of written data.
But some protos allow passing a NULL buffer to discover what the
output buffer *should* be, without writing anything
- Accept dynptr memory as memory arguments passed to helpers
- Add routing table ID to bpf_fib_lookup BPF helper
- Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands
- Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
maps as read-only)
- Show target_{obj,btf}_id in tracing link fdinfo
- Addition of several new kfuncs (most of the names are
self-explanatory):
- Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
and bpf_dynptr_clone().
- bpf_task_under_cgroup()
- bpf_sock_destroy() - force closing sockets
- bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
Netfilter:
- Relax set/map validation checks in nf_tables. Allow checking
presence of an entry in a map without using the value
- Increase ip_vs_conn_tab_bits range for 64BIT builds
- Allow updating size of a set
- Improve NAT tuple selection when connection is closing
Driver API:
- Integrate netdev with LED subsystem, to allow configuring HW
"offloaded" blinking of LEDs based on link state and activity
(i.e. packets coming in and out)
- Support configuring rate selection pins of SFP modules
- Factor Clause 73 auto-negotiation code out of the drivers, provide
common helper routines
- Add more fool-proof helpers for managing lifetime of MDIO devices
associated with the PCS layer
- Allow drivers to report advanced statistics related to Time Aware
scheduler offload (taprio)
- Allow opting out of VF statistics in link dump, to allow more VFs
to fit into the message
- Split devlink instance and devlink port operations
New hardware / drivers:
- Ethernet:
- Synopsys EMAC4 IP support (stmmac)
- Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
- Marvell 88E6250 7 port switches
- Microchip LAN8650/1 Rev.B0 PHYs
- MediaTek MT7981/MT7988 built-in 1GE PHY driver
- WiFi:
- Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
- Realtek RTL8723DS (SDIO variant)
- Realtek RTL8851BE
- CAN:
- Fintek F81604
Drivers:
- Ethernet NICs:
- Intel (100G, ice):
- support dynamic interrupt allocation
- use meta data match instead of VF MAC addr on slow-path
- nVidia/Mellanox:
- extend link aggregation to handle 4, rather than just 2 ports
- spawn sub-functions without any features by default
- OcteonTX2:
- support HTB (Tx scheduling/QoS) offload
- make RSS hash generation configurable
- support selecting Rx queue using TC filters
- Wangxun (ngbe/txgbe):
- add basic Tx/Rx packet offloads
- add phylink support (SFP/PCS control)
- Freescale/NXP (enetc):
- report TAPRIO packet statistics
- Solarflare/AMD:
- support matching on IP ToS and UDP source port of outer
header
- VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
- add devlink dev info support for EF10
- Virtual NICs:
- Microsoft vNIC:
- size the Rx indirection table based on requested
configuration
- support VLAN tagging
- Amazon vNIC:
- try to reuse Rx buffers if not fully consumed, useful for ARM
servers running with 16kB pages
- Google vNIC:
- support TCP segmentation of >64kB frames
- Ethernet embedded switches:
- Marvell (mv88e6xxx):
- enable USXGMII (88E6191X)
- Microchip:
- lan966x: add support for Egress Stage 0 ACL engine
- lan966x: support mapping packet priority to internal switch
priority (based on PCP or DSCP)
- Ethernet PHYs:
- Broadcom PHYs:
- support for Wake-on-LAN for BCM54210E/B50212E
- report LPI counter
- Microsemi PHYs: support RGMII delay configuration (VSC85xx)
- Micrel PHYs: receive timestamp in the frame (LAN8841)
- Realtek PHYs: support optional external PHY clock
- Altera TSE PCS: merge the driver into Lynx PCS which it is a
variant of
- CAN: Kvaser PCIEcan:
- support packet timestamping
- WiFi:
- Intel (iwlwifi):
- major update for new firmware and Multi-Link Operation (MLO)
- configuration rework to drop test devices and split the
different families
- support for segmented PNVM images and power tables
- new vendor entries for PPAG (platform antenna gain) feature
- Qualcomm 802.11ax (ath11k):
- Multiple Basic Service Set Identifier (MBSSID) and Enhanced
MBSSID Advertisement (EMA) support in AP mode
- support factory test mode
- RealTek (rtw89):
- add RSSI based antenna diversity
- support U-NII-4 channels on 5 GHz band
- RealTek (rtl8xxxu):
- AP mode support for 8188f
- support USB RX aggregation for the newer chips"
* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
net: scm: introduce and use scm_recv_unix helper
af_unix: Skip SCM_PIDFD if scm->pid is NULL.
net: lan743x: Simplify comparison
netlink: Add __sock_i_ino() for __netlink_diag_dump().
net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
Revert "af_unix: Call scm_recv() only after scm_set_cred()."
phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
libceph: Partially revert changes to support MSG_SPLICE_PAGES
net: phy: mscc: fix packet loss due to RGMII delays
net: mana: use vmalloc_array and vcalloc
net: enetc: use vmalloc_array and vcalloc
ionic: use vmalloc_array and vcalloc
pds_core: use vmalloc_array and vcalloc
gve: use vmalloc_array and vcalloc
octeon_ep: use vmalloc_array and vcalloc
net: usb: qmi_wwan: add u-blox 0x1312 composition
perf trace: fix MSG_SPLICE_PAGES build error
ipvlan: Fix return value of ipvlan_queue_xmit()
netfilter: nf_tables: fix underflow in chain reference counter
netfilter: nf_tables: unbind non-anonymous set if rule construction fails
...
|
||
|
Linus Torvalds
|
6e17c6de3d |
- Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
- Yosry has also eliminated cgroup's atomic rstat flushing. - Nhat Pham adds the new cachestat() syscall. It provides userspace with the ability to query pagecache status - a similar concept to mincore() but more powerful and with improved usability. - Mel Gorman provides more optimizations for compaction, reducing the prevalence of page rescanning. - Lorenzo Stoakes has done some maintanance work on the get_user_pages() interface. - Liam Howlett continues with cleanups and maintenance work to the maple tree code. Peng Zhang also does some work on maple tree. - Johannes Weiner has done some cleanup work on the compaction code. - David Hildenbrand has contributed additional selftests for get_user_pages(). - Thomas Gleixner has contributed some maintenance and optimization work for the vmalloc code. - Baolin Wang has provided some compaction cleanups, - SeongJae Park continues maintenance work on the DAMON code. - Huang Ying has done some maintenance on the swap code's usage of device refcounting. - Christoph Hellwig has some cleanups for the filemap/directio code. - Ryan Roberts provides two patch series which yield some rationalization of the kernel's access to pte entries - use the provided APIs rather than open-coding accesses. - Lorenzo Stoakes has some fixes to the interaction between pagecache and directio access to file mappings. - John Hubbard has a series of fixes to the MM selftesting code. - ZhangPeng continues the folio conversion campaign. - Hugh Dickins has been working on the pagetable handling code, mainly with a view to reducing the load on the mmap_lock. - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from 128 to 8. - Domenico Cerasuolo has improved the zswap reclaim mechanism by reorganizing the LRU management. - Matthew Wilcox provides some fixups to make gfs2 work better with the buffer_head code. - Vishal Moola also has done some folio conversion work. - Matthew Wilcox has removed the remnants of the pagevec code - their functionality is migrated over to struct folio_batch. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZJejewAKCRDdBJ7gKXxA joggAPwKMfT9lvDBEUnJagY7dbDPky1cSYZdJKxxM2cApGa42gEA6Cl8HRAWqSOh J0qXCzqaaN8+BuEyLGDVPaXur9KirwY= =B7yQ -----END PGP SIGNATURE----- Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull mm updates from Andrew Morton: - Yosry Ahmed brought back some cgroup v1 stats in OOM logs - Yosry has also eliminated cgroup's atomic rstat flushing - Nhat Pham adds the new cachestat() syscall. It provides userspace with the ability to query pagecache status - a similar concept to mincore() but more powerful and with improved usability - Mel Gorman provides more optimizations for compaction, reducing the prevalence of page rescanning - Lorenzo Stoakes has done some maintanance work on the get_user_pages() interface - Liam Howlett continues with cleanups and maintenance work to the maple tree code. Peng Zhang also does some work on maple tree - Johannes Weiner has done some cleanup work on the compaction code - David Hildenbrand has contributed additional selftests for get_user_pages() - Thomas Gleixner has contributed some maintenance and optimization work for the vmalloc code - Baolin Wang has provided some compaction cleanups, - SeongJae Park continues maintenance work on the DAMON code - Huang Ying has done some maintenance on the swap code's usage of device refcounting - Christoph Hellwig has some cleanups for the filemap/directio code - Ryan Roberts provides two patch series which yield some rationalization of the kernel's access to pte entries - use the provided APIs rather than open-coding accesses - Lorenzo Stoakes has some fixes to the interaction between pagecache and directio access to file mappings - John Hubbard has a series of fixes to the MM selftesting code - ZhangPeng continues the folio conversion campaign - Hugh Dickins has been working on the pagetable handling code, mainly with a view to reducing the load on the mmap_lock - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from 128 to 8 - Domenico Cerasuolo has improved the zswap reclaim mechanism by reorganizing the LRU management - Matthew Wilcox provides some fixups to make gfs2 work better with the buffer_head code - Vishal Moola also has done some folio conversion work - Matthew Wilcox has removed the remnants of the pagevec code - their functionality is migrated over to struct folio_batch * tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits) mm/hugetlb: remove hugetlb_set_page_subpool() mm: nommu: correct the range of mmap_sem_read_lock in task_mem() hugetlb: revert use of page_cache_next_miss() Revert "page cache: fix page_cache_next/prev_miss off by one" mm/vmscan: fix root proactive reclaim unthrottling unbalanced node mm: memcg: rename and document global_reclaim() mm: kill [add|del]_page_to_lru_list() mm: compaction: convert to use a folio in isolate_migratepages_block() mm: zswap: fix double invalidate with exclusive loads mm: remove unnecessary pagevec includes mm: remove references to pagevec mm: rename invalidate_mapping_pagevec to mapping_try_invalidate mm: remove struct pagevec net: convert sunrpc from pagevec to folio_batch i915: convert i915_gpu_error to use a folio_batch pagevec: rename fbatch_count() mm: remove check_move_unevictable_pages() drm: convert drm_gem_put_pages() to use a folio_batch i915: convert shmem_sg_free_table() to use a folio_batch scatterlist: add sg_set_folio() ... |
||
|
Linus Torvalds
|
6aeadf7896 |
Move the arm64 architecture documentation under Documentation/arch/. This
brings some order to the documentation directory, declutters the top-level directory, and makes the documentation organization more closely match that of the source. -----BEGIN PGP SIGNATURE----- iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmSbDsIPHGNvcmJldEBs d24ubmV0AAoJEBdDWhNsDH5Y+ksH/2Xqun1ipPvu66+bBdPIf8N9AVFatl2q3mt4 tgX3A4RH3Ejklb4GbRLOIP23PmCxt7LRv4P05ttw8VpTP3A+Cw1d1s2RxiXGvfDE j7IW6hrpUmVoDdiDCRGtjdIa7MVI5aAsj8CCTjEFywGi5CQe0Uzq4aTUKoxJDEnu GYVy2CwDNEt4GTQ6ClPpFx2rc4UZf/H2XqXsnod9ef8A5Nkt3EtgoS1hh3o1QZGA Mqx2HAOVS1tb6GUVUbVLCdj40+YjBLjXFlsH4dA+wsFFdUlZLKuTesdiAMg2X6eT E8C/6oRT+OiWbrnXUTJEn8z98Ds8VHn7D4n97O9bIQ+R9AFtmPI= =H/+D -----END PGP SIGNATURE----- Merge tag 'docs-arm64-move' of git://git.lwn.net/linux Pull arm64 documentation move from Jonathan Corbet: "Move the arm64 architecture documentation under Documentation/arch/. This brings some order to the documentation directory, declutters the top-level directory, and makes the documentation organization more closely match that of the source" * tag 'docs-arm64-move' of git://git.lwn.net/linux: perf arm-spe: Fix a dangling Documentation/arm64 reference mm: Fix a dangling Documentation/arm64 reference arm64: Fix dangling references to Documentation/arm64 dt-bindings: fix dangling Documentation/arm64 reference docs: arm64: Move arm64 documentation under Documentation/arch/ |
||
|
Linus Torvalds
|
6e2332e0ab |
cgroup: Changes for v6.5
* Whenever cpuset needs to rebuild sched_domain, it walked all tasks looking for DEADLINE tasks as they need to be accounted on the new domain. Walking all tasks can be expensive and there may not be any DEADLINE tasks at all. Task iteration is now omitted if there are no DEADLINE tasks. * Fixes DEADLINE bandwidth misaccounting after task migration failures. * When no controller is enabled, -Wstringop-overflow warning is triggered. The fix patch added an early exit which is too eager and got reverted for now. Will fix later. * Everything else are minor cleanups. -----BEGIN PGP SIGNATURE----- iIQEABYIACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCZJoRHw4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGZatAQCKTv8pb5HEgochph4n26laSdVZs6ce3Y+s7V1T rum+3QD/TyJFmCkZSMscolZGFuafpg41sjPbmc4SexeuAMYCMgY= =nioD -----END PGP SIGNATURE----- Merge tag 'cgroup-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup Pull cgroup updates from Tejun Heo: - Whenever cpuset needs to rebuild sched_domain, it walked all tasks looking for DEADLINE tasks as they need to be accounted on the new domain. Walking all tasks can be expensive and there may not be any DEADLINE tasks at all. Task iteration is now omitted if there are no DEADLINE tasks - Fixes DEADLINE bandwidth misaccounting after task migration failures - When no controller is enabled, -Wstringop-overflow warning is triggered. The fix patch added an early exit which is too eager and got reverted for now. Will fix later - Everything else is minor cleanups * tag 'cgroup-for-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: Revert "cgroup: Avoid -Wstringop-overflow warnings" cgroup/misc: Expose misc.current on cgroup v2 root cgroup: Avoid -Wstringop-overflow warnings cgroup: remove obsolete comment on cgroup_on_dfl() cgroup: remove unused task_cgroup_path() cgroup/cpuset: remove unneeded header files cgroup: make cgroup_is_threaded() and cgroup_is_thread_root() static rdmacg: fix kernel-doc warnings in rdmacg cgroup: Replace the css_set call with cgroup_get cgroup: remove unused macro for_each_e_css() cgroup: Update out-of-date comment in cgroup_migrate() cgroup: Replace all non-returning strlcpy with strscpy cgroup/cpuset: remove unneeded header files cgroup/cpuset: Free DL BW in case can_attach() fails sched/deadline: Create DL BW alloc, free & check overflow interface cgroup/cpuset: Iterate only if DEADLINE tasks are present sched/cpuset: Keep track of SCHED_DEADLINE task in cpusets sched/cpuset: Bring back cpuset_mutex cgroup/cpuset: Rename functions dealing with DEADLINE accounting |
||
|
Linus Torvalds
|
7ab044a4f4 |
workqueue: Changes for v6.5
* Concurrency-managed per-cpu work items that hog CPUs and delay the execution of other work items are now automatically detected and excluded from concurrency management. Reporting on such work items can also be enabled through a config option. * Added tools/workqueue/wq_monitor.py which improves visibility into workqueue usages and behaviors. * Includes Arnd's minimal fix for gcc-13 enum warning on 32bit compiles. This conflicts with |
||
|
Linus Torvalds
|
6f612579be |
objtool changes for v6.5:
- Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel, DWARF
creates almost 200 million relocations, ballooning objtool's peak heap
usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce objtool's
peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
- Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output.
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
- Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
- Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
- Fixes for modern stack canary handling
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molar:
"Build footprint & performance improvements:
- Reduce memory usage with CONFIG_DEBUG_INFO=y
In the worst case of an allyesconfig+CONFIG_DEBUG_INFO=y kernel,
DWARF creates almost 200 million relocations, ballooning objtool's
peak heap usage to 53GB. These patches reduce that to 25GB.
On a distro-type kernel with kernel IBT enabled, they reduce
objtool's peak heap usage from 4.2GB to 2.8GB.
These changes also improve the runtime significantly.
Debuggability improvements:
- Add the unwind_debug command-line option, for more extend unwinding
debugging output
- Limit unreachable warnings to once per function
- Add verbose option for disassembling affected functions
- Include backtrace in verbose mode
- Detect missing __noreturn annotations
- Ignore exc_double_fault() __noreturn warnings
- Remove superfluous global_noreturns entries
- Move noreturn function list to separate file
- Add __kunit_abort() to noreturns
Unwinder improvements:
- Allow stack operations in UNWIND_HINT_UNDEFINED regions
- drm/vmwgfx: Add unwind hints around RBP clobber
Cleanups:
- Move the x86 entry thunk restore code into thunk functions
- x86/unwind/orc: Use swap() instead of open coding it
- Remove unnecessary/unused variables
Fixes for modern stack canary handling"
* tag 'objtool-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/orc: Make the is_callthunk() definition depend on CONFIG_BPF_JIT=y
objtool: Skip reading DWARF section data
objtool: Free insns when done
objtool: Get rid of reloc->rel[a]
objtool: Shrink elf hash nodes
objtool: Shrink reloc->sym_reloc_entry
objtool: Get rid of reloc->jump_table_start
objtool: Get rid of reloc->addend
objtool: Get rid of reloc->type
objtool: Get rid of reloc->offset
objtool: Get rid of reloc->idx
objtool: Get rid of reloc->list
objtool: Allocate relocs in advance for new rela sections
objtool: Add for_each_reloc()
objtool: Don't free memory in elf_close()
objtool: Keep GElf_Rel[a] structs synced
objtool: Add elf_create_section_pair()
objtool: Add mark_sec_changed()
objtool: Fix reloc_hash size
objtool: Consolidate rel/rela handling
...
|
||
|
Linus Torvalds
|
dc43fc753b |
- A serious scrubbing of the MTRR code including adding a new map
mechanism in order to look up the memory type of a region easily. Also address memory range lookup issues like returning an invalid memory type. Furthermore, this handles the decoupling of PAT from MTRR more naturally. All work by Juergen Gross -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSazOIACgkQEsHwGGHe VUqltQ/8D1oA4LrgnbFO25J/27U/MwKo7ZI3hN6/OkH2FfdBgqeOlOV4TnndDL88 l/UrzOfWJQxpVLTO3SLMtDla0VrT24B4HZ4hvzDEdJZ8f1DLZ+gLN7sKOMjoIcO9 fvBZ5+/gFtVxSquwZmWvM0qKiCkKxmznJfpOx1/lt9UtKyKmpPSMVdrpqOeufL7k xxWqGRh2s104ZKwfMOj4dgvCVK9ZUlsPqqiARzkqc0bCg7SeIyPea/S2eljhTl15 BTOA/wW/lcVQ9yWmDD8inzxrZI4EHEohEaNMfof3AqFyYCOU4RzvE9tpAFEK3GXp NilxYkZ+JbEljq2QiEt0Ll8XEVKedi7YC1oN3ciiy9RS6+rWSPIvuMFV9tgPRjr1 AbWYmDoiLz+5ePI+0fckStRRntWKiao+hOaXb5RbEcg+85hkDHZZC7b0tCAUvnh7 OwuQfbzAqipn2G1hg+LThHDSjI4qHfHJlpeuPcsAxWef1diJbe15StdVWm+ttRE0 MTXSn3J9qT9MoY5y6m4KSybp0c1nSFlCK/ZkNvzwWHmkAG6M7wuFmBn3pVzEaCew fneGZcX9Ija4MY8Ygajp8GI1aQ4mBNif+uVE7UUY17hH9qAf8vI8Joqs+4L35u8h SZl/IqJO9ziEmVLdy9ajgm1xW04AFE1RYRfa6aH6K6tRaIoh8bE= =Dmx5 -----END PGP SIGNATURE----- Merge tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mtrr updates from Borislav Petkov: "A serious scrubbing of the MTRR code including adding a new map mechanism in order to look up the memory type of a region easily. Also address memory range lookup issues like returning an invalid memory type. Furthermore, this handles the decoupling of PAT from MTRR more naturally. All work by Juergen Gross" * tag 'x86_mtrr_for_v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/xen: Set default memory type for PV guests to WB x86/mtrr: Unify debugging printing x86/mtrr: Remove unused code x86/mm: Only check uniform after calling mtrr_type_lookup() x86/mtrr: Don't let mtrr_type_lookup() return MTRR_TYPE_INVALID x86/mtrr: Use new cache_map in mtrr_type_lookup() x86/mtrr: Add mtrr=debug command line option x86/mtrr: Construct a memory map with cache modes x86/mtrr: Add get_effective_type() service function x86/mtrr: Allocate mtrr_value array dynamically x86/mtrr: Move 32-bit code from mtrr.c to legacy.c x86/mtrr: Have only one set_mtrr() variant x86/mtrr: Replace vendor tests in MTRR code x86/xen: Set MTRR state when running as Xen PV initial domain x86/hyperv: Set MTRR state when running as SEV-SNP Hyper-V guest x86/mtrr: Support setting MTRR state for software defined MTRRs x86/mtrr: Replace size_or_mask and size_and_mask with a much easier concept x86/mtrr: Remove physical address size calculation |
||
|
Linus Torvalds
|
a354049532 |
It's been a relatively calm cycle in docsland. We do have:
- Some initial page-table documentation from Linus (the other Linus)
- Regression-handling documentation improvements from Thorsten
- Addition of kerneldoc documentation for the ERR_PTR() and related
macros from James Seo
...and the usual collection of fixes and updates.
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Merge tag 'docs-6.5' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"It's been a relatively calm cycle in docsland. We do have:
- Some initial page-table documentation from Linus (the other Linus)
- Regression-handling documentation improvements from Thorsten
- Addition of kerneldoc documentation for the ERR_PTR() and related
macros from James Seo
... and the usual collection of fixes and updates"
* tag 'docs-6.5' of git://git.lwn.net/linux:
docs: consolidate storage interfaces
Documentation: update git configuration for Link: tag
Documentation: KVM: make corrections to vcpu-requests.rst
Documentation: KVM: make corrections to ppc-pv.rst
Documentation: KVM: make corrections to locking.rst
Documentation: KVM: make corrections to halt-polling.rst
Documentation: virt: correct location of haltpoll module params
Documentation/mm: Initial page table documentation
docs: crypto: async-tx-api: fix typo in struct name
docs/doc-guide: Clarify how to write tables
docs: handling-regressions: rework section about fixing procedures
docs: process: fix a typoed cross-reference
docs: submitting-patches: Discuss interleaved replies
MAINTAINERS: direct process doc changes to a dedicated ML
Documentation: core-api: Add error pointer functions to kernel-api
err.h: Add missing kerneldocs for error pointer functions
Documentation: conf.py: Add __force to c_id_attributes
docs: clarify KVM related kernel parameters' descriptions
docs: consolidate human interface subsystems
docs: admin-guide: Add information about intel_pstate active mode
|
||
|
Linus Torvalds
|
af96134dc8 |
RCU pull request for v6.5
This pull contains the following branches:
doc.2023.05.10a: Documentation updates
fixes.2023.05.11a: Miscellaneous fixes, perhaps most notably:
o Remove RCU_NONIDLE(). The new visibility of most of the idle
loop to RCU has obsoleted this API.
o Make the RCU_SOFTIRQ callback-invocation time limit also apply
to the rcuc kthreads that invoke callbacks for CONFIG_PREEMPT_RT.
o Add a jiffies-based callback-invocation time limit to handle
long-running callbacks. (The local_clock() function is only
invoked once per 32 callbacks due to its high overhead.)
o Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs,
which fixes a bug that can occur on systems with non-contiguous
CPU numbering.
kvfree.2023.05.10a: kvfree_rcu updates
o Eliminate the single-argument variant of k[v]free_rcu() now
that all uses have been converted to k[v]free_rcu_mightsleep().
o Add WARN_ON_ONCE() checks for k[v]free_rcu*() freeing callbacks
too soon. Yes, this is closing the barn door after the horse
has escaped, but Murphy says that there will be more horses.
nocb.2023.05.11a: Callback-offloading updates
o Fix a number of bugs involving the shrinker and lazy callbacks.
rcu-tasks.2023.05.10a: Tasks RCU updates
torture.2023.05.15a: Torture-test updates
rcu-urgent.2023.06.06a: Urgent SRCU fix (already pulled)
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Merge tag 'rcu.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
"Documentation updates
Miscellaneous fixes, perhaps most notably:
- Remove RCU_NONIDLE(). The new visibility of most of the idle loop
to RCU has obsoleted this API.
- Make the RCU_SOFTIRQ callback-invocation time limit also apply to
the rcuc kthreads that invoke callbacks for CONFIG_PREEMPT_RT.
- Add a jiffies-based callback-invocation time limit to handle
long-running callbacks. (The local_clock() function is only invoked
once per 32 callbacks due to its high overhead.)
- Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs, which
fixes a bug that can occur on systems with non-contiguous CPU
numbering.
kvfree_rcu updates:
- Eliminate the single-argument variant of k[v]free_rcu() now that
all uses have been converted to k[v]free_rcu_mightsleep().
- Add WARN_ON_ONCE() checks for k[v]free_rcu*() freeing callbacks too
soon. Yes, this is closing the barn door after the horse has
escaped, but Murphy says that there will be more horses.
Callback-offloading updates:
- Fix a number of bugs involving the shrinker and lazy callbacks.
Tasks RCU updates
Torture-test updates"
* tag 'rcu.2023.06.22a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (32 commits)
torture: Remove duplicated argument -enable-kvm for ppc64
doc/rcutorture: Add description of rcutorture.stall_cpu_block
rcu/rcuscale: Stop kfree_scale_thread thread(s) after unloading rcuscale
rcu/rcuscale: Move rcu_scale_*() after kfree_scale_cleanup()
rcutorture: Correct name of use_softirq module parameter
locktorture: Add long_hold to adjust lock-hold delays
rcu/nocb: Make shrinker iterate only over NOCB CPUs
rcu-tasks: Stop rcu_tasks_invoke_cbs() from using never-onlined CPUs
rcu: Make rcu_cpu_starting() rely on interrupts being disabled
rcu: Mark rcu_cpu_kthread() accesses to ->rcu_cpu_has_work
rcu: Mark additional concurrent load from ->cpu_no_qs.b.exp
rcu: Employ jiffies-based backstop to callback time limit
rcu: Check callback-invocation time limit for rcuc kthreads
rcu: Remove RCU_NONIDLE()
rcu: Add more RCU files to kernel-api.rst
rcu-tasks: Clarify the cblist_init_generic() function's pr_info() output
rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic()
rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker
rcu/nocb: Fix shrinker race against callback enqueuer
rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading
...
|
||
|
Linus Torvalds
|
2605e80d34 |
arm64 updates for 6.5:
- Support for the Armv8.9 Permission Indirection Extensions. While this
feature doesn't add new functionality, it enables future support for
Guarded Control Stacks (GCS) and Permission Overlays.
- User-space support for the Armv8.8 memcpy/memset instructions.
- arm64 perf: support the HiSilicon SoC uncore PMU, Arm CMN sysfs
identifier, support for the NXP i.MX9 SoC DDRC PMU, fixes and
cleanups.
- Removal of superfluous ISBs on context switch (following retrospective
architecture tightening).
- Decode the ISS2 register during faults for additional information to
help with debugging.
- KPTI clean-up/simplification of the trampoline exit code.
- Addressing several -Wmissing-prototype warnings.
- Kselftest improvements for signal handling and ptrace.
- Fix TPIDR2_EL0 restoring on sigreturn
- Clean-up, robustness improvements of the module allocation code.
- More sysreg conversions to the automatic register/bitfields
generation.
- CPU capabilities handling cleanup.
- Arm documentation updates: ACPI, ptdump.
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Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Catalin Marinas:
"Notable features are user-space support for the memcpy/memset
instructions and the permission indirection extension.
- Support for the Armv8.9 Permission Indirection Extensions. While
this feature doesn't add new functionality, it enables future
support for Guarded Control Stacks (GCS) and Permission Overlays
- User-space support for the Armv8.8 memcpy/memset instructions
- arm64 perf: support the HiSilicon SoC uncore PMU, Arm CMN sysfs
identifier, support for the NXP i.MX9 SoC DDRC PMU, fixes and
cleanups
- Removal of superfluous ISBs on context switch (following
retrospective architecture tightening)
- Decode the ISS2 register during faults for additional information
to help with debugging
- KPTI clean-up/simplification of the trampoline exit code
- Addressing several -Wmissing-prototype warnings
- Kselftest improvements for signal handling and ptrace
- Fix TPIDR2_EL0 restoring on sigreturn
- Clean-up, robustness improvements of the module allocation code
- More sysreg conversions to the automatic register/bitfields
generation
- CPU capabilities handling cleanup
- Arm documentation updates: ACPI, ptdump"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (124 commits)
kselftest/arm64: Add a test case for TPIDR2 restore
arm64/signal: Restore TPIDR2 register rather than memory state
arm64: alternatives: make clean_dcache_range_nopatch() noinstr-safe
Documentation/arm64: Add ptdump documentation
arm64: hibernate: remove WARN_ON in save_processor_state
kselftest/arm64: Log signal code and address for unexpected signals
docs: perf: Fix warning from 'make htmldocs' in hisi-pmu.rst
arm64/fpsimd: Exit streaming mode when flushing tasks
docs: perf: Add new description for HiSilicon UC PMU
drivers/perf: hisi: Add support for HiSilicon UC PMU driver
drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver
perf: arm_cspmu: Add missing MODULE_DEVICE_TABLE
perf/arm-cmn: Add sysfs identifier
perf/arm-cmn: Revamp model detection
perf/arm_dmc620: Add cpumask
arm64: mm: fix VA-range sanity check
arm64/mm: remove now-superfluous ISBs from TTBR writes
Documentation/arm64: Update ACPI tables from BBR
Documentation/arm64: Update references in arm-acpi
Documentation/arm64: Update ARM and arch reference
...
|
||
|
Linus Torvalds
|
9244724fbf |
A large update for SMP management:
- Parallel CPU bringup
The reason why people are interested in parallel bringup is to shorten
the (kexec) reboot time of cloud servers to reduce the downtime of the
VM tenants.
The current fully serialized bringup does the following per AP:
1) Prepare callbacks (allocate, intialize, create threads)
2) Kick the AP alive (e.g. INIT/SIPI on x86)
3) Wait for the AP to report alive state
4) Let the AP continue through the atomic bringup
5) Let the AP run the threaded bringup to full online state
There are two significant delays:
#3 The time for an AP to report alive state in start_secondary() on
x86 has been measured in the range between 350us and 3.5ms
depending on vendor and CPU type, BIOS microcode size etc.
#4 The atomic bringup does the microcode update. This has been
measured to take up to ~8ms on the primary threads depending on
the microcode patch size to apply.
On a two socket SKL server with 56 cores (112 threads) the boot CPU
spends on current mainline about 800ms busy waiting for the APs to come
up and apply microcode. That's more than 80% of the actual onlining
procedure.
This can be reduced significantly by splitting the bringup mechanism
into two parts:
1) Run the prepare callbacks and kick the AP alive for each AP which
needs to be brought up.
The APs wake up, do their firmware initialization and run the low
level kernel startup code including microcode loading in parallel
up to the first synchronization point. (#1 and #2 above)
2) Run the rest of the bringup code strictly serialized per CPU
(#3 - #5 above) as it's done today.
Parallelizing that stage of the CPU bringup might be possible in
theory, but it's questionable whether required surgery would be
justified for a pretty small gain.
If the system is large enough the first AP is already waiting at the
first synchronization point when the boot CPU finished the wake-up of
the last AP. That reduces the AP bringup time on that SKL from ~800ms
to ~80ms, i.e. by a factor ~10x.
The actual gain varies wildly depending on the system, CPU, microcode
patch size and other factors. There are some opportunities to reduce
the overhead further, but that needs some deep surgery in the x86 CPU
bringup code.
For now this is only enabled on x86, but the core functionality
obviously works for all SMP capable architectures.
- Enhancements for SMP function call tracing so it is possible to locate
the scheduling and the actual execution points. That allows to measure
IPI delivery time precisely.
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Merge tag 'smp-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP updates from Thomas Gleixner:
"A large update for SMP management:
- Parallel CPU bringup
The reason why people are interested in parallel bringup is to
shorten the (kexec) reboot time of cloud servers to reduce the
downtime of the VM tenants.
The current fully serialized bringup does the following per AP:
1) Prepare callbacks (allocate, intialize, create threads)
2) Kick the AP alive (e.g. INIT/SIPI on x86)
3) Wait for the AP to report alive state
4) Let the AP continue through the atomic bringup
5) Let the AP run the threaded bringup to full online state
There are two significant delays:
#3 The time for an AP to report alive state in start_secondary()
on x86 has been measured in the range between 350us and 3.5ms
depending on vendor and CPU type, BIOS microcode size etc.
#4 The atomic bringup does the microcode update. This has been
measured to take up to ~8ms on the primary threads depending
on the microcode patch size to apply.
On a two socket SKL server with 56 cores (112 threads) the boot CPU
spends on current mainline about 800ms busy waiting for the APs to
come up and apply microcode. That's more than 80% of the actual
onlining procedure.
This can be reduced significantly by splitting the bringup
mechanism into two parts:
1) Run the prepare callbacks and kick the AP alive for each AP
which needs to be brought up.
The APs wake up, do their firmware initialization and run the
low level kernel startup code including microcode loading in
parallel up to the first synchronization point. (#1 and #2
above)
2) Run the rest of the bringup code strictly serialized per CPU
(#3 - #5 above) as it's done today.
Parallelizing that stage of the CPU bringup might be possible
in theory, but it's questionable whether required surgery
would be justified for a pretty small gain.
If the system is large enough the first AP is already waiting at
the first synchronization point when the boot CPU finished the
wake-up of the last AP. That reduces the AP bringup time on that
SKL from ~800ms to ~80ms, i.e. by a factor ~10x.
The actual gain varies wildly depending on the system, CPU,
microcode patch size and other factors. There are some
opportunities to reduce the overhead further, but that needs some
deep surgery in the x86 CPU bringup code.
For now this is only enabled on x86, but the core functionality
obviously works for all SMP capable architectures.
- Enhancements for SMP function call tracing so it is possible to
locate the scheduling and the actual execution points. That allows
to measure IPI delivery time precisely"
* tag 'smp-core-2023-06-26' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tip/tip: (45 commits)
trace,smp: Add tracepoints for scheduling remotelly called functions
trace,smp: Add tracepoints around remotelly called functions
MAINTAINERS: Add CPU HOTPLUG entry
x86/smpboot: Fix the parallel bringup decision
x86/realmode: Make stack lock work in trampoline_compat()
x86/smp: Initialize cpu_primary_thread_mask late
cpu/hotplug: Fix off by one in cpuhp_bringup_mask()
x86/apic: Fix use of X{,2}APIC_ENABLE in asm with older binutils
x86/smpboot/64: Implement arch_cpuhp_init_parallel_bringup() and enable it
x86/smpboot: Support parallel startup of secondary CPUs
x86/smpboot: Implement a bit spinlock to protect the realmode stack
x86/apic: Save the APIC virtual base address
cpu/hotplug: Allow "parallel" bringup up to CPUHP_BP_KICK_AP_STATE
x86/apic: Provide cpu_primary_thread mask
x86/smpboot: Enable split CPU startup
cpu/hotplug: Provide a split up CPUHP_BRINGUP mechanism
cpu/hotplug: Reset task stack state in _cpu_up()
cpu/hotplug: Remove unused state functions
riscv: Switch to hotplug core state synchronization
parisc: Switch to hotplug core state synchronization
...
|
||
|
Linus Torvalds
|
a0433f8cae |
for-6.5/block-2023-06-23
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Merge tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux
Pull block updates from Jens Axboe:
- NVMe pull request via Keith:
- Various cleanups all around (Irvin, Chaitanya, Christophe)
- Better struct packing (Christophe JAILLET)
- Reduce controller error logs for optional commands (Keith)
- Support for >=64KiB block sizes (Daniel Gomez)
- Fabrics fixes and code organization (Max, Chaitanya, Daniel
Wagner)
- bcache updates via Coly:
- Fix a race at init time (Mingzhe Zou)
- Misc fixes and cleanups (Andrea, Thomas, Zheng, Ye)
- use page pinning in the block layer for dio (David)
- convert old block dio code to page pinning (David, Christoph)
- cleanups for pktcdvd (Andy)
- cleanups for rnbd (Guoqing)
- use the unchecked __bio_add_page() for the initial single page
additions (Johannes)
- fix overflows in the Amiga partition handling code (Michael)
- improve mq-deadline zoned device support (Bart)
- keep passthrough requests out of the IO schedulers (Christoph, Ming)
- improve support for flush requests, making them less special to deal
with (Christoph)
- add bdev holder ops and shutdown methods (Christoph)
- fix the name_to_dev_t() situation and use cases (Christoph)
- decouple the block open flags from fmode_t (Christoph)
- ublk updates and cleanups, including adding user copy support (Ming)
- BFQ sanity checking (Bart)
- convert brd from radix to xarray (Pankaj)
- constify various structures (Thomas, Ivan)
- more fine grained persistent reservation ioctl capability checks
(Jingbo)
- misc fixes and cleanups (Arnd, Azeem, Demi, Ed, Hengqi, Hou, Jan,
Jordy, Li, Min, Yu, Zhong, Waiman)
* tag 'for-6.5/block-2023-06-23' of git://git.kernel.dk/linux: (266 commits)
scsi/sg: don't grab scsi host module reference
ext4: Fix warning in blkdev_put()
block: don't return -EINVAL for not found names in devt_from_devname
cdrom: Fix spectre-v1 gadget
block: Improve kernel-doc headers
blk-mq: don't insert passthrough request into sw queue
bsg: make bsg_class a static const structure
ublk: make ublk_chr_class a static const structure
aoe: make aoe_class a static const structure
block/rnbd: make all 'class' structures const
block: fix the exclusive open mask in disk_scan_partitions
block: add overflow checks for Amiga partition support
block: change all __u32 annotations to __be32 in affs_hardblocks.h
block: fix signed int overflow in Amiga partition support
block: add capacity validation in bdev_add_partition()
block: fine-granular CAP_SYS_ADMIN for Persistent Reservation
block: disallow Persistent Reservation on partitions
reiserfs: fix blkdev_put() warning from release_journal_dev()
block: fix wrong mode for blkdev_get_by_dev() from disk_scan_partitions()
block: document the holder argument to blkdev_get_by_path
...
|
||
|
Dan Williams
|
d2f9fe6953 |
Merge branch 'for-6.5/cxl-perf' into for-6.5/cxl
Pick up initial support for the CXL 3.0 performance monitoring definition. Small conflicts with the firmware update work as they both placed their init code in the same location. |
||
|
Jonathan Cameron
|
c2b34d4422 |
docs: perf: Minimal introduction the the CXL PMU device and driver
Very basic introduction to the device and the current driver support provided. I expect to expand on this in future versions of this patch set. Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Link: https://lore.kernel.org/r/20230526095824.16336-6-Jonathan.Cameron@huawei.com Signed-off-by: Dan Williams <dan.j.williams@intel.com> |
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Catalin Marinas
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f42039d10b |
Merge branches 'for-next/kpti', 'for-next/missing-proto-warn', 'for-next/iss2-decode', 'for-next/kselftest', 'for-next/misc', 'for-next/feat_mops', 'for-next/module-alloc', 'for-next/sysreg', 'for-next/cpucap', 'for-next/acpi', 'for-next/kdump', 'for-next/acpi-doc', 'for-next/doc' and 'for-next/tpidr2-fix', remote-tracking branch 'arm64/for-next/perf' into for-next/core
* arm64/for-next/perf: docs: perf: Fix warning from 'make htmldocs' in hisi-pmu.rst docs: perf: Add new description for HiSilicon UC PMU drivers/perf: hisi: Add support for HiSilicon UC PMU driver drivers/perf: hisi: Add support for HiSilicon H60PA and PAv3 PMU driver perf: arm_cspmu: Add missing MODULE_DEVICE_TABLE perf/arm-cmn: Add sysfs identifier perf/arm-cmn: Revamp model detection perf/arm_dmc620: Add cpumask dt-bindings: perf: fsl-imx-ddr: Add i.MX93 compatible drivers/perf: imx_ddr: Add support for NXP i.MX9 SoC DDRC PMU driver perf/arm_cspmu: Decouple APMT dependency perf/arm_cspmu: Clean up ACPI dependency ACPI/APMT: Don't register invalid resource perf/arm_cspmu: Fix event attribute type perf: arm_cspmu: Set irq affinitiy only if overflow interrupt is used drivers/perf: hisi: Don't migrate perf to the CPU going to teardown drivers/perf: apple_m1: Force 63bit counters for M2 CPUs perf/arm-cmn: Fix DTC reset perf: qcom_l2_pmu: Make l2_cache_pmu_probe_cluster() more robust perf/arm-cci: Slightly optimize cci_pmu_sync_counters() * for-next/kpti: : Simplify KPTI trampoline exit code arm64: entry: Simplify tramp_alias macro and tramp_exit routine arm64: entry: Preserve/restore X29 even for compat tasks * for-next/missing-proto-warn: : Address -Wmissing-prototype warnings arm64: add alt_cb_patch_nops prototype arm64: move early_brk64 prototype to header arm64: signal: include asm/exception.h arm64: kaslr: add kaslr_early_init() declaration arm64: flush: include linux/libnvdimm.h arm64: module-plts: inline linux/moduleloader.h arm64: hide unused is_valid_bugaddr() arm64: efi: add efi_handle_corrupted_x18 prototype arm64: cpuidle: fix #ifdef for acpi functions arm64: kvm: add prototypes for functions called in asm arm64: spectre: provide prototypes for internal functions arm64: move cpu_suspend_set_dbg_restorer() prototype to header arm64: avoid prototype warnings for syscalls arm64: add scs_patch_vmlinux prototype arm64: xor-neon: mark xor_arm64_neon_*() static * for-next/iss2-decode: : Add decode of ISS2 to data abort reports arm64/esr: Add decode of ISS2 to data abort reporting arm64/esr: Use GENMASK() for the ISS mask * for-next/kselftest: : Various arm64 kselftest improvements kselftest/arm64: Log signal code and address for unexpected signals kselftest/arm64: Add a smoke test for ptracing hardware break/watch points * for-next/misc: : Miscellaneous patches arm64: alternatives: make clean_dcache_range_nopatch() noinstr-safe arm64: hibernate: remove WARN_ON in save_processor_state arm64/fpsimd: Exit streaming mode when flushing tasks arm64: mm: fix VA-range sanity check arm64/mm: remove now-superfluous ISBs from TTBR writes arm64: consolidate rox page protection logic arm64: set __exception_irq_entry with __irq_entry as a default arm64: syscall: unmask DAIF for tracing status arm64: lockdep: enable checks for held locks when returning to userspace arm64/cpucaps: increase string width to properly format cpucaps.h arm64/cpufeature: Use helper for ECV CNTPOFF cpufeature * for-next/feat_mops: : Support for ARMv8.8 memcpy instructions in userspace kselftest/arm64: add MOPS to hwcap test arm64: mops: allow disabling MOPS from the kernel command line arm64: mops: detect and enable FEAT_MOPS arm64: mops: handle single stepping after MOPS exception arm64: mops: handle MOPS exceptions KVM: arm64: hide MOPS from guests arm64: mops: don't disable host MOPS instructions from EL2 arm64: mops: document boot requirements for MOPS KVM: arm64: switch HCRX_EL2 between host and guest arm64: cpufeature: detect FEAT_HCX KVM: arm64: initialize HCRX_EL2 * for-next/module-alloc: : Make the arm64 module allocation code more robust (clean-up, VA range expansion) arm64: module: rework module VA range selection arm64: module: mandate MODULE_PLTS arm64: module: move module randomization to module.c arm64: kaslr: split kaslr/module initialization arm64: kasan: remove !KASAN_VMALLOC remnants arm64: module: remove old !KASAN_VMALLOC logic * for-next/sysreg: (21 commits) : More sysreg conversions to automatic generation arm64/sysreg: Convert TRBIDR_EL1 register to automatic generation arm64/sysreg: Convert TRBTRG_EL1 register to automatic generation arm64/sysreg: Convert TRBMAR_EL1 register to automatic generation arm64/sysreg: Convert TRBSR_EL1 register to automatic generation arm64/sysreg: Convert TRBBASER_EL1 register to automatic generation arm64/sysreg: Convert TRBPTR_EL1 register to automatic generation arm64/sysreg: Convert TRBLIMITR_EL1 register to automatic generation arm64/sysreg: Rename TRBIDR_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBTRG_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBMAR_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBSR_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBBASER_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBPTR_EL1 fields per auto-gen tools format arm64/sysreg: Rename TRBLIMITR_EL1 fields per auto-gen tools format arm64/sysreg: Convert OSECCR_EL1 to automatic generation arm64/sysreg: Convert OSDTRTX_EL1 to automatic generation arm64/sysreg: Convert OSDTRRX_EL1 to automatic generation arm64/sysreg: Convert OSLAR_EL1 to automatic generation arm64/sysreg: Standardise naming of bitfield constants in OSL[AS]R_EL1 arm64/sysreg: Convert MDSCR_EL1 to automatic register generation ... * for-next/cpucap: : arm64 cpucap clean-up arm64: cpufeature: fold cpus_set_cap() into update_cpu_capabilities() arm64: cpufeature: use cpucap naming arm64: alternatives: use cpucap naming arm64: standardise cpucap bitmap names * for-next/acpi: : Various arm64-related ACPI patches ACPI: bus: Consolidate all arm specific initialisation into acpi_arm_init() * for-next/kdump: : Simplify the crashkernel reservation behaviour of crashkernel=X,high on arm64 arm64: add kdump.rst into index.rst Documentation: add kdump.rst to present crashkernel reservation on arm64 arm64: kdump: simplify the reservation behaviour of crashkernel=,high * for-next/acpi-doc: : Update ACPI documentation for Arm systems Documentation/arm64: Update ACPI tables from BBR Documentation/arm64: Update references in arm-acpi Documentation/arm64: Update ARM and arch reference * for-next/doc: : arm64 documentation updates Documentation/arm64: Add ptdump documentation * for-next/tpidr2-fix: : Fix the TPIDR2_EL0 register restoring on sigreturn kselftest/arm64: Add a test case for TPIDR2 restore arm64/signal: Restore TPIDR2 register rather than memory state |
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Russell Harmon
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2971c05874 |
Documentation: dm-integrity: Document an example of how the tunables relate.
Signed-off-by: Russell Harmon <eatnumber1@gmail.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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Russell Harmon
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52145f284c |
Documentation: dm-integrity: Document default values.
Signed-off-by: Russell Harmon <eatnumber1@gmail.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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Russell Harmon
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3b671459e6 |
Documentation: dm-integrity: Document the meaning of "buffer".
"Buffers" are buffers of the metadata/checksum area of dm-integrity. They are always at most as large as a single metadata area on-disk, but may be smaller. Signed-off-by: Russell Harmon <eatnumber1@gmail.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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Russell Harmon
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c3ba5aa6f7 |
Documentation: dm-integrity: Fix minor grammatical error.
"where dm-integrity uses bitmap" becomes "where dm-integrity uses a bitmap" Signed-off-by: Russell Harmon <eatnumber1@gmail.com> Reviewed-by: Bagas Sanjaya <bagasdotme@gmail.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org> |
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LeiZhou-97
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e973dfe929 |
cgroup/misc: Expose misc.current on cgroup v2 root
Hello, This patch is to expose misc.current on cgroup v2 root for tracking how much of the resource has been consumed in total on the system. Most of the cloud infrastucture use cgroup to fetch the host information for scheduling purpose. Currently, the misc controller can be used by Intel TDX HKIDs and AMD SEV ASIDs, which are both used for creating encrypted VMs. Intel TDX and AMD SEV are mostly be used by the cloud providers for providing confidential VMs. In actual use of a server, these confidential VMs may be launched in different ways. For the cloud solution, there are kubvirt and coco (tracked by kubepods.slice); on host, they can be booted directly through qemu by end user (tracked by user.slice), etc. In this complex environment, when wanting to know how many resource is used in total it has to iterate through all existing slices to get the value of each misc.current and add them up to calculate the total number of consumed keys. So exposing misc.current to root cgroup tends to give much easier when calculates how much resource has been used in total, which helps to schedule and count resources for the cloud infrastucture. Signed-off-by: LeiZhou-97 <lei.zhou@intel.com> Signed-off-by: Tejun Heo <tj@kernel.org> |
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Jonathan Corbet
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e4624435f3 |
docs: arm64: Move arm64 documentation under Documentation/arch/
Architecture-specific documentation is being moved into Documentation/arch/ as a way of cleaning up the top-level documentation directory and making the docs hierarchy more closely match the source hierarchy. Move Documentation/arm64 into arch/ (along with the Chinese equvalent translations) and fix up documentation references. Cc: Will Deacon <will@kernel.org> Cc: Alex Shi <alexs@kernel.org> Cc: Hu Haowen <src.res@email.cn> Cc: Paolo Bonzini <pbonzini@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Reviewed-by: Yantengsi <siyanteng@loongson.cn> Signed-off-by: Jonathan Corbet <corbet@lwn.net> |
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SeongJae Park
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ff71f26f97 |
Docs/admin-guide/mm/damon/usage: update the ways for getting monitoring results
The recommended ways for getting DAMON monitoring results are using tried_regions sysfs directory for partial snapshot of the results, and DAMON tracepoint for full record of the results. However, the tried_regions sysfs directory usage has not sufficiently updated on some sections of the DAMON usage document. Update those. Link: https://lkml.kernel.org/r/20230616191742.87531-8-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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67c34f6c6a |
Docs/admin-guide/mm/damon/usage: clarify quotas and watermarks sysfs interface
Explanation of DAMOS quotas and watermarks are not clearly explaining the meaning and expectation of each file. Add more clarification for those. Link: https://lkml.kernel.org/r/20230616191742.87531-7-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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01e08737da |
Docs/admin-guide/mm/damon/usage: link design document for DAMOS
The background and concept of DAMOS is redundantly documented, in the design document and the usage document. Replace the duplicated ones in usage document with links to the design document. Link: https://lkml.kernel.org/r/20230616191742.87531-6-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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ddb7d012b1 |
Docs/admin-guide/mm/damon/usage: remove unnecessary sentences about supported address spaces
Brief explanation of DAMON user space tool and sysfs interface are unnecessarily and repeatedly mentioning the list of address spaces that DAMON is supporting. Remove those. Link: https://lkml.kernel.org/r/20230616191742.87531-5-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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cc5ece5979 |
Docs/admin-guide/mm/damon/usage: fix typos in references and commas
Fix typos including a unnecessary comma and incomplete ':ref:' keywords. Link: https://lkml.kernel.org/r/20230616191742.87531-4-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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SeongJae Park
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60eb644b01 |
Docs/admin-guide/mm/damon/start: update DAMOS example command
DAMON user-space tool, damo, has deprecated[1] its old DAMOS schemes specification format. However, an example of DAMON documentation is still using it. Update the example to use one of the alternative options. [1] https://github.com/awslabs/damo/commit/e9950ae68f6c Link: https://lkml.kernel.org/r/20230616191742.87531-3-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Kefeng Wang
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6c77b607ee |
mm: kill lock|unlock_page_memcg()
Since commit
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Will Deacon
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dea0f4146f |
docs: perf: Fix warning from 'make htmldocs' in hisi-pmu.rst
Building the 'htmldocs' target results in the following warning when
processing 'hisi-pmu.rst':
| Documentation/admin-guide/perf/hisi-pmu.rst:107: ERROR: Unexpected indentation.
Fix the warning by converting all of the register bitfield lists into
proper bulleted lists and adjusting the indentation of the wrapping line
accordingly. At the same time, use an enumerated list to describe the
new PMUv2 functions.
Fixes:
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