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da996f7310
527408 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
da996f7310 |
edac updates for v4.2-rc1
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Linus Torvalds
|
5b4ca44477 |
media updates for v4.2-rc1
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Linus Torvalds
|
0db9723cac |
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:
"Specifics:
- enhance Thermal Framework with several new capabilities:
* use power estimates
* compute weights with relative integers instead of percentages
* allow governors to have private data in thermal zones
* export thermal zone parameters through sysfs
Thanks to the ARM thermal team (Javi, Punit, KP).
- introduce a new thermal governor: power allocator. First in kernel
closed loop PI(D) controller for thermal control. Thanks to ARM
thermal team.
- enhance OF thermal to allow thermal zones to have sustainable power
HW specification. Thanks to Punit.
- introduce thermal driver for Intel Quark SoC x1000platform. Thanks
to Ong, Boon Leong.
- introduce QPNP PMIC temperature alarm driver. Thanks to Ivan T. I.
- introduce thermal driver for Hisilicon hi6220. Thanks to
kongxinwei.
- enhance Exynos thermal driver to handle Exynos5433 TMU. Thanks to
Chanwoo C.
- TI thermal driver now has a better implementation for EOCZ bit.
From Pavel M.
- add id for Skylake processors in int340x processor thermal driver.
- a couple of small fixes and cleanups."
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (36 commits)
thermal: hisilicon: add new hisilicon thermal sensor driver
dt-bindings: Document the hi6220 thermal sensor bindings
thermal: of-thermal: add support for reading coefficients property
thermal: support slope and offset coefficients
thermal: power_allocator: round the division when divvying up power
thermal: exynos: Add the support for Exynos5433 TMU
thermal: cpu_cooling: Fix power calculation when CPUs are offline
thermal: cpu_cooling: Remove cpu_dev update on policy CPU update
thermal: export thermal_zone_parameters to sysfs
thermal: cpu_cooling: Check memory allocation of power_table
ti-soc-thermal: request temperature periodically if hw can't do that itself
ti-soc-thermal: implement eocz bit to make driver useful on omap3
cleanup ti-soc-thermal
thermal: remove stale THERMAL_POWER_ACTOR select
thermal: Default OF created trip points to writable
thermal: core: Add Kconfig option to enable writable trips
thermal: x86_pkg_temp: drop const for thermal_zone_parameters
of: thermal: Introduce sustainable power for a thermal zone
thermal: add trace events to the power allocator governor
thermal: introduce the Power Allocator governor
...
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Linus Torvalds
|
4570a37169 |
sound updates for 4.2-rc1
It was a busy development cycle at this time, as you can see a wide
range of changes in diffstat. There are no big changes but many
refactoring and improvements. Here we go some highlights:
* ALSA core:
- Procfs codes were cleaned up to use seq_file
- Procfs can be opt out via Kconfig (only for EXPERT)
- Two types of jack API were unified finally; now both kctl and input
jack devs are handled via a single function call.
* HD-audio
- Continued code restructuring for the future ASoC driver; now HDA
controller driver is split to a core helper module.
- Preliminary codes for Skylake audio support in HDA core.
- Proper i915 gfx power well management for SKL & co
- Enabled runtime PM as default for Intel HDMI/DP codecs
- Newer Tegra chip supports
- More quirks for Dell headsets, Alienware (with CA0132), etc.
- A couple of DRM ELD helper API functions
* ASoC
- Support for loading ASoC topology maps from firmware, intended to be
used to allow self-describing DSP firmware images to be built which
can map controls added by the DSP to userspace without the kernel
needing to know about individual DSP firmwares
- Lots of refactoring to avoid direct access to snd_soc_codec where
it's not needed supporting future refactoring
- Big refactoring, cleanup and enhancement for the Wolfson ADSP driver
- Cleanup series for TI TAS2552 and R-CAR drivers
- Fixes and improvements on RT56xx codecs
- Support for TI TAS571x power amplifiers
- Support for Qualcomm APQ8016 and ZTE ZX296702 SoCs
- Support for x86 systems with RT5650 and Qualcomm Storm
- Support for Mediatek AFE (Audio Front End) unit
- Other various small fixes to ASoC codec drivers
* Firewire
- Enhanced to allow non-blocking streams to use timestamp
synchronization
- Improve support for DM1500 and BeBoBv3
* Misc
- Cleanup of old pci API functions over all PCI sound drivers
- Fix long-standing regression of the old powermac i2c setup
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Merge tag 'sound-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound updates from Takashi Iwai:
"It was a busy development cycle at this time, as you can see a wide
range of changes in diffstat. There are no big changes but many
refactoring and improvements. Here we go some highlights:
ALSA core:
- Procfs codes were cleaned up to use seq_file
- Procfs can be opt out via Kconfig (only for EXPERT)
- Two types of jack API were unified finally; now both kctl and input
jack devs are handled via a single function call.
HD-audio:
- Continued code restructuring for the future ASoC driver; now HDA
controller driver is split to a core helper module.
- Preliminary codes for Skylake audio support in HDA core.
- Proper i915 gfx power well management for SKL & co
- Enabled runtime PM as default for Intel HDMI/DP codecs
- Newer Tegra chip supports
- More quirks for Dell headsets, Alienware (with CA0132), etc.
- A couple of DRM ELD helper API functions
ASoC:
- Support for loading ASoC topology maps from firmware, intended to
be used to allow self-describing DSP firmware images to be built
which can map controls added by the DSP to userspace without the
kernel needing to know about individual DSP firmwares
- Lots of refactoring to avoid direct access to snd_soc_codec where
it's not needed supporting future refactoring
- Big refactoring, cleanup and enhancement for the Wolfson ADSP
driver
- Cleanup series for TI TAS2552 and R-CAR drivers
- Fixes and improvements on RT56xx codecs
- Support for TI TAS571x power amplifiers
- Support for Qualcomm APQ8016 and ZTE ZX296702 SoCs
- Support for x86 systems with RT5650 and Qualcomm Storm
- Support for Mediatek AFE (Audio Front End) unit
- Other various small fixes to ASoC codec drivers
Firewire:
- Enhanced to allow non-blocking streams to use timestamp
synchronization
- Improve support for DM1500 and BeBoBv3
Misc:
- Cleanup of old pci API functions over all PCI sound drivers
- Fix long-standing regression of the old powermac i2c setup"
* tag 'sound-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (533 commits)
ALSA: pcm: Fix pcm_class sysfs output
ALSA: hda-beep: Update authors dead email address
ASoC: wm_adsp: Move DSP Rate controls into the codec
ASoC: wm8995: Fix setting sysclk for WM8995_SYSCLK_MCLK2 case
ALSA: hda: provide default bus io ops extended hdac
ALSA: hda: add hda link cleanup routine
ALSA: hda: add hdac_ext stream creation and cleanup routines
ASoC: rsrc-card: remove unused ret
ALSA: HDAC: move SND_HDA_PREALLOC_SIZE to core
ASoC: mediatek: Add machine driver for rt5650 rt5676 codec
ASoC: mediatek: Add machine driver for MAX98090 codec
ASoC: mediatek: Add AFE platform driver
ASoC: rsnd: remove io from rsnd_mod
ASoC: rsnd: move rsnd_mod_is_working() to rsnd_io_is_working()
ASoC: rsnd: don't use rsnd_mod_to_io() on snd_kcontrol
ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_src_xxx()
ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_ssi_xxx()
ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_dma_xxx()
ASoC: rsnd: don't use rsnd_mod_to_io() on rsnd_get_adinr()
ASoC: rsnd: add common interrupt handler for SSI/SRC/DMA
...
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Linus Torvalds
|
f7b08217c7 |
Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull DMI updates from Jean Delvare: "The most important change is the new sysfs interface to the DMI table, which will let user-space tools (such as dmidecode) access the table without relying on /dev/mem" * 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: firmware: dmi: struct dmi_header should be packed firmware: dmi_scan: Coding style cleanups Documentation: ABI: sysfs-firmware-dmi: add -entries suffix to file name firmware: dmi_scan: add SBMIOS entry and DMI tables firmware: dmi_scan: Trim DMI table length before exporting it firmware: dmi_scan: Rename dmi_table to dmi_decode_table firmware: dmi: List my quilt tree firmware: dmi_scan: Only honor end-of-table for 64-bit tables |
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Linus Torvalds
|
64e22b8685 |
Merge branch 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata updates from Tejun Heo: - a number of libata core changes to better support NCQ TRIM. - ahci now supports MSI-X in single IRQ mode to support a new controller which doesn't implement MSI or INTX. - ahci now supports edge-triggered IRQ mode to support a new controller which for some odd reason did edge-triggered IRQ. - the usual controller support additions and changes. * 'for-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (27 commits) libata: Do not blacklist Micron M500DC ata: ahci_mvebu: add suspend/resume support ahci, msix: Fix build error for !PCI_MSI ahci: Add support for Cavium's ThunderX host controller ahci: Add generic MSI-X support for single interrupts to SATA PCI driver libata: finally use __initconst in ata_parse_force_one() drivers: ata: add support for Ceva sata host controller devicetree:bindings: add devicetree bindings for ceva ahci ahci: added support for Freescale AHCI sata ahci: Store irq number in struct ahci_host_priv ahci: Move interrupt enablement code to a separate function Doc: libata: Fix spelling typo found in libata.xml ata:sata_nv - Change 1 to true for bool type variable. ata: add Broadcom AHCI SATA3 driver for STB chips Documentation: devicetree: add Broadcom SATA binding libata: Fix regression when the NCQ Send and Receive log page is absent ata: hpt366: fix constant cast warning ata: ahci_xgene: potential NULL dereference in probe ata: ahci_xgene: Add AHCI Support for 2nd HW version of APM X-Gene SoC AHCI SATA Host controller. libahci: Add support to handle HOST_IRQ_STAT as edge trigger latch. ... |
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Linus Torvalds
|
6597ac8a51 |
- DM core cleanups
- blk-mq request-based DM no longer uses any mempools now that partial
completions are no longer handled as part of cloned requests
- DM raid cleanups and support for MD raid0
- DM cache core advances and a new stochastic-multi-queue (smq) cache
replacement policy
- smq is the new default dm-cache policy
- DM thinp cleanups and much more efficient large discard support
- DM statistics support for request-based DM and nanosecond resolution
timestamps
- Fixes to DM stripe, DM log-writes, DM raid1 and DM crypt
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Merge tag 'dm-4.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- DM core cleanups:
* blk-mq request-based DM no longer uses any mempools now that
partial completions are no longer handled as part of cloned
requests
- DM raid cleanups and support for MD raid0
- DM cache core advances and a new stochastic-multi-queue (smq) cache
replacement policy
* smq is the new default dm-cache policy
- DM thinp cleanups and much more efficient large discard support
- DM statistics support for request-based DM and nanosecond resolution
timestamps
- Fixes to DM stripe, DM log-writes, DM raid1 and DM crypt
* tag 'dm-4.2-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (39 commits)
dm stats: add support for request-based DM devices
dm stats: collect and report histogram of IO latencies
dm stats: support precise timestamps
dm stats: fix divide by zero if 'number_of_areas' arg is zero
dm cache: switch the "default" cache replacement policy from mq to smq
dm space map metadata: fix occasional leak of a metadata block on resize
dm thin metadata: fix a race when entering fail mode
dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages
dm thin: range discard support
dm thin metadata: add dm_thin_remove_range()
dm thin metadata: add dm_thin_find_mapped_range()
dm btree: add dm_btree_remove_leaves()
dm stats: Use kvfree() in dm_kvfree()
dm cache: age and write back cache entries even without active IO
dm cache: prefix all DMERR and DMINFO messages with cache device name
dm cache: add fail io mode and needs_check flag
dm cache: wake the worker thread every time we free a migration object
dm cache: add stochastic-multi-queue (smq) policy
dm cache: boost promotion of blocks that will be overwritten
dm cache: defer whole cells
...
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Linus Torvalds
|
e4bc13adfd |
Merge branch 'for-4.2/writeback' of git://git.kernel.dk/linux-block
Pull cgroup writeback support from Jens Axboe:
"This is the big pull request for adding cgroup writeback support.
This code has been in development for a long time, and it has been
simmering in for-next for a good chunk of this cycle too. This is one
of those problems that has been talked about for at least half a
decade, finally there's a solution and code to go with it.
Also see last weeks writeup on LWN:
http://lwn.net/Articles/648292/"
* 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits)
writeback, blkio: add documentation for cgroup writeback support
vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB
writeback: do foreign inode detection iff cgroup writeback is enabled
v9fs: fix error handling in v9fs_session_init()
bdi: fix wrong error return value in cgwb_create()
buffer: remove unusued 'ret' variable
writeback: disassociate inodes from dying bdi_writebacks
writeback: implement foreign cgroup inode bdi_writeback switching
writeback: add lockdep annotation to inode_to_wb()
writeback: use unlocked_inode_to_wb transaction in inode_congested()
writeback: implement unlocked_inode_to_wb transaction and use it for stat updates
writeback: implement [locked_]inode_to_wb_and_lock_list()
writeback: implement foreign cgroup inode detection
writeback: make writeback_control track the inode being written back
writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb()
mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use
writeback: implement memcg writeback domain based throttling
writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes
writeback: implement memcg wb_domain
writeback: update wb_over_bg_thresh() to use wb_domain aware operations
...
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Linus Torvalds
|
ad90fb9751 |
Merge branch 'for-4.2/sg' of git://git.kernel.dk/linux-block
Pull asm/scatterlist.h removal from Jens Axboe: "We don't have any specific arch scatterlist anymore, since parisc finally switched over. Kill the include" * 'for-4.2/sg' of git://git.kernel.dk/linux-block: remove scatterlist.h generation from arch Kbuild files remove <asm/scatterlist.h> |
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Linus Torvalds
|
6a398a3ef4 |
Merge branch 'for-4.2/drivers' of git://git.kernel.dk/linux-block
Pull block driver updates from Jens Axboe:
"This contains:
- a few race fixes for null_blk, from Akinobu Mita.
- a series of fixes for mtip32xx, from Asai Thambi and Selvan Mani at
Micron.
- NVMe:
* Fix for missing error return on allocation failure, from Axel
Lin.
* Code consolidation and cleanups from Christoph.
* Memory barrier addition, syncing queue count and queue
pointers. From Jon Derrick.
* Various fixes from Keith, an addition to support user
issue reset from sysfs or ioctl, and automatic namespace
rescan.
* Fix from Matias, avoiding losing some request flags when
marking the request failfast.
- small cleanups and sparse fixups for ps3vram. From Geert
Uytterhoeven and Geoff Lavand.
- s390/dasd dead code removal, from Jarod Wilson.
- a set of fixes and optimizations for loop, from Ming Lei.
- conversion to blkdev_reread_part() of loop, dasd, ndb. From Ming
Lei.
- updates to cciss. From Tomas Henzl"
* 'for-4.2/drivers' of git://git.kernel.dk/linux-block: (44 commits)
mtip32xx: Fix accessing freed memory
block: nvme-scsi: Catch kcalloc failure
NVMe: Fix IO for extended metadata formats
nvme: don't overwrite req->cmd_flags on sync cmd
mtip32xx: increase wait time for hba reset
mtip32xx: fix minor number
mtip32xx: remove unnecessary sleep in mtip_ftl_rebuild_poll()
mtip32xx: fix crash on surprise removal of the drive
mtip32xx: Abort I/O during secure erase operation
mtip32xx: fix incorrectly setting MTIP_DDF_SEC_LOCK_BIT
mtip32xx: remove unused variable 'port->allocated'
mtip32xx: fix rmmod issue
MAINTAINERS: Update ps3vram block driver
block/ps3vram: Remove obsolete reference to MTD
block/ps3vram: Fix sparse warnings
NVMe: Automatic namespace rescan
NVMe: Memory barrier before queue_count is incremented
NVMe: add sysfs and ioctl controller reset
null_blk: restart request processing on completion handler
null_blk: prevent timer handler running on a different CPU where started
...
|
||
|
Linus Torvalds
|
bfffa1cc9d |
Merge branch 'for-4.2/core' of git://git.kernel.dk/linux-block
Pull core block IO update from Jens Axboe:
"Nothing really major in here, mostly a collection of smaller
optimizations and cleanups, mixed with various fixes. In more detail,
this contains:
- Addition of policy specific data to blkcg for block cgroups. From
Arianna Avanzini.
- Various cleanups around command types from Christoph.
- Cleanup of the suspend block I/O path from Christoph.
- Plugging updates from Shaohua and Jeff Moyer, for blk-mq.
- Eliminating atomic inc/dec of both remaining IO count and reference
count in a bio. From me.
- Fixes for SG gap and chunk size support for data-less (discards)
IO, so we can merge these better. From me.
- Small restructuring of blk-mq shared tag support, freeing drivers
from iterating hardware queues. From Keith Busch.
- A few cfq-iosched tweaks, from Tahsin Erdogan and me. Makes the
IOPS mode the default for non-rotational storage"
* 'for-4.2/core' of git://git.kernel.dk/linux-block: (35 commits)
cfq-iosched: fix other locations where blkcg_to_cfqgd() can return NULL
cfq-iosched: fix sysfs oops when attempting to read unconfigured weights
cfq-iosched: move group scheduling functions under ifdef
cfq-iosched: fix the setting of IOPS mode on SSDs
blktrace: Add blktrace.c to BLOCK LAYER in MAINTAINERS file
block, cgroup: implement policy-specific per-blkcg data
block: Make CFQ default to IOPS mode on SSDs
block: add blk_set_queue_dying() to blkdev.h
blk-mq: Shared tag enhancements
block: don't honor chunk sizes for data-less IO
block: only honor SG gap prevention for merges that contain data
block: fix returnvar.cocci warnings
block, dm: don't copy bios for request clones
block: remove management of bi_remaining when restoring original bi_end_io
block: replace trylock with mutex_lock in blkdev_reread_part()
block: export blkdev_reread_part() and __blkdev_reread_part()
suspend: simplify block I/O handling
block: collapse bio bit space
block: remove unused BIO_RW_BLOCK and BIO_EOF flags
block: remove BIO_EOPNOTSUPP
...
|
||
|
Linus Torvalds
|
cc8a0a9439 |
This pull request includes the following UBI/UBIFS changes:
* Minor fixes for UBI and UBIFS -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABAgAGBQJVi9DTAAoJEPmeIjfg4UaaOlAP/AtZqcxpCHlKpbZUz7z1MmCb MP9AbowP0CSXrMYSA7GrBROw+bfTM7aZrhWqhhoJxAyBbb9LGldjW9xZmUqUvS5e LZjAO8sWqxEbfVBqnpTgA2AiSN37I3+epYqgDFNlNCtxPYxkEXpXVoLUSdrAUKw8 24EjPe0tq1JKLmjh3XJQZJnmCW+7xPKRUj7KiwPZzombIoNXFA9z4PCOLLlnDx1X TRasArrncarslQaHQerRoZUKC/hoIGZMipv94pNovgO8HAcZ/N19ef1Fc4iG5zvS XUMerUyKMTVfR6LFjueMjRpEMOmDb4AifWeDKY00xqY4RCnkIcAAqVRBGWQep6Y4 PxCwttNktykWj/LygPCsQk6gd0IxdVGsFra4DpxhCCWXaUw2RJCRg0a4mQFOqojO tmCVQVYgd4Ob2DDnxmS7Z8IvjIWzsSkgatF+Dde2feeHUwEuM9NoudHg704+A30x 3fNwIFhuREhOymxGpBaprfaKh7khF88CcrGjiEOvw/DK0QfwlVoUVLqjkNVaLZXC nrwNATdheq2gMV2Mdydy/uo5NpUxeblSrlnuknKQSTmH5m2/U9F9lJ/v3Sv7ShjB gWqyNIoxJBKTSbsGkFP5bzWmxwsQ4HlPTcAmJhoUDK7SLeXThhgRwB4o2zlriYfS D7ZVxRMY5JCNxomIzD0X =xU0H -----END PGP SIGNATURE----- Merge tag 'upstream-4.2-rc1' of git://git.infradead.org/linux-ubifs Pull UBI/UBIFS updates from Richard Weinberger: "Minor fixes for UBI and UBIFS" * tag 'upstream-4.2-rc1' of git://git.infradead.org/linux-ubifs: UBI: Remove unnecessary `\' UBI: Use static class and attribute groups UBI: add a helper function for updatting on-flash layout volumes UBI: Fastmap: Do not add vol if it already exists UBI: Init vol->reserved_pebs by assignment UBI: Fastmap: Rename variables to make them meaningful UBI: Fastmap: Remove unnecessary `\' UBI: Fastmap: Use max() to get the larger value ubifs: fix to check error code of register_shrinker UBI: block: Dynamically allocate minor numbers |
||
|
Linus Torvalds
|
d857da7b70 |
A very large number of cleanups and bug fixes --- in particular for
the ext4 encryption patches, which is a new feature added in the last
merge window. Also fix a number of long-standing xfstest failures.
(Quota writes failing due to ENOSPC, a race between truncate and
writepage in data=journalled mode that was causing generic/068 to
fail, and other corner cases.)
Also add support for FALLOC_FL_INSERT_RANGE, and improve jbd2
performance eliminating locking when a buffer is modified more than
once during a transaction (which is very common for allocation
bitmaps, for example), in which case the state of the journalled
buffer head doesn't need to change.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
"A very large number of cleanups and bug fixes --- in particular for
the ext4 encryption patches, which is a new feature added in the last
merge window. Also fix a number of long-standing xfstest failures.
(Quota writes failing due to ENOSPC, a race between truncate and
writepage in data=journalled mode that was causing generic/068 to
fail, and other corner cases.)
Also add support for FALLOC_FL_INSERT_RANGE, and improve jbd2
performance eliminating locking when a buffer is modified more than
once during a transaction (which is very common for allocation
bitmaps, for example), in which case the state of the journalled
buffer head doesn't need to change"
[ I renamed "ext4_follow_link()" to "ext4_encrypted_follow_link()" in
the merge resolution, to make it clear that that function is _only_
used for encrypted symlinks. The function doesn't actually work for
non-encrypted symlinks at all, and they use the generic helpers
- Linus ]
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (52 commits)
ext4: set lazytime on remount if MS_LAZYTIME is set by mount
ext4: only call ext4_truncate when size <= isize
ext4: make online defrag error reporting consistent
ext4: minor cleanup of ext4_da_reserve_space()
ext4: don't retry file block mapping on bigalloc fs with non-extent file
ext4: prevent ext4_quota_write() from failing due to ENOSPC
ext4: call sync_blockdev() before invalidate_bdev() in put_super()
jbd2: speedup jbd2_journal_dirty_metadata()
jbd2: get rid of open coded allocation retry loop
ext4: improve warning directory handling messages
jbd2: fix ocfs2 corrupt when updating journal superblock fails
ext4: mballoc: avoid 20-argument function call
ext4: wait for existing dio workers in ext4_alloc_file_blocks()
ext4: recalculate journal credits as inode depth changes
jbd2: use GFP_NOFS in jbd2_cleanup_journal_tail()
ext4: use swap() in mext_page_double_lock()
ext4: use swap() in memswap()
ext4: fix race between truncate and __ext4_journalled_writepage()
ext4 crypto: fail the mount if blocksize != pagesize
ext4: Add support FALLOC_FL_INSERT_RANGE for fallocate
...
|
||
|
Linus Torvalds
|
77d431641e |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller: "Sparc perf stack traversal fixes from David Ahern" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc64: perf: Use UREG_FP rather than UREG_I6 sparc64: perf: Add sanity checking on addresses in user stack sparc64: Convert BUG_ON to warning sparc: perf: Disable pagefaults while walking userspace stacks |
||
|
Linus Torvalds
|
55a7d4b85c |
h8300 pull request for 4.2
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABCAAGBQJVi5eKAAoJEEdC8EELKDmcZWoQANh4UC+JGcP3XJ+AWyJpX1Rg VQMmSAiF/QZr3ty9sbU/6v3pNK5B1s2etY7lWzzCsp7GMhYln83OjwJn8pkcAvRk 4GoEio4Yp0RMTOYk1nvKEhUGnxLwpma+xX5ulZkSTaYhZl++eX8HUGmfHhpxMcK9 Unz1Y7vRIRaNUIawZECijxVj9yvteczwdwjWBp7AH2HChZ3LWJGo2xikd1Jwizx8 zPv+mdaHkV9gbORS53hvqVaXXjiZVmLKQEz6LlWHubuWysf98YcBzNAhSKpjQzqW cwjXyw3MNc5fPjliwUstN/9ImWFdRJgwmdQ0DJ1v6kWPbHMQ4lCxeasy02YJ7l0R TWUOTyTSGT7Hd8CRrryo7akQ3nt8g7fZAR6nVujexbjkSt9ZbBSplAikiSKRbjU2 7jkolYSM1ADqEeBBwcDnG2O45Pv8PxKGa4/8MV2hkcvrkkJp2lW+KybY0qp19MWb Dw09QYzFb5u6sKqD6AsjJQ6GKxLxNn3yBKk16V1yF0kAvQRdIj0XPgtMnGUgdkAw QA1nRQM25CLyOtH9SVWogRLof8UTZUlPtUCxKRww2//pAVkKGHg/afnnkqN933Yc Kv7/Mz2es6Km+D4qkQetnXF/IOxWfVUvnQa23Oe7gmkg4KNNrGO6bo7iQXDjDrHa LuNfJZRG5DzDjbdcp2t3 =fE8E -----END PGP SIGNATURE----- Merge tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linux Pull Renesas H8/300 architecture re-introduction from Yoshinori Sato. We dropped arch/h8300 two years ago as stale and old, this is a new and more modern rewritten arch support for the same architecture. * tag 'for-4.2' of git://git.sourceforge.jp/gitroot/uclinux-h8/linux: (27 commits) h8300: fix typo. h8300: Always build dtb h8300: Remove ARCH_WANT_IPC_PARSE_VERSION sh-sci: Get register size from platform device clk: h8300: fix error handling in h8s2678_pll_clk_setup() h8300: Symbol name fix h8300: devicetree source h8300: configs h8300: IRQ chip driver h8300: clocksource h8300: clock driver h8300: Build scripts h8300: library functions h8300: Memory management h8300: miscellaneous functions h8300: process helpers h8300: compressed image support h8300: Low level entry h8300: kernel startup h8300: Interrupt and exceptions ... |
||
|
David S. Miller
|
f01cae4e1a |
Merge branch 'sparc-perf-stack'
David Ahern says:
====================
sparc64: perf fixes for userspace stacks
Coming back to the perf userspace callchain problem. As a reminder there are
a series of problems trying to use perf to collect callchains with scheduling
tracepoints, e.g., perf sched record -g -- <cmd>.
The first patch disables pagefaults while walking the user stack. As discussed
a couple of months ago this is the right fix, but I was puzzled as to why
processes were terminating with sigbus (and sometimes sigsegv). I believe the
root of this problem is bad addresses trying to walk the frames using frame
pointers. The bad addresses lead to faults that get handled by do_sparc64_fault
and it aborts the task though I am still puzzled as to why it gets past this
check in do_sparc64_fault:
if (in_atomic() || !mm)
goto intr_or_no_mm;
pagefault_disable bumps the preempt_count which should make in_atomic return != 0
(building kernels with preemption set to voluntar, CONFIG_PREEMPT_VOLUNTARY=y).
While this set does not fully solve the problem it does prevent a number of
pain points with the current code, most notably able to lock up the system.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
David Ahern
|
2d89cd8625 |
sparc64: perf: Use UREG_FP rather than UREG_I6
perf walks userspace callchains by following frame pointers. Use the UREG_FP macro to make it clearer that the %fp is being used. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
David Ahern
|
b69fb7699c |
sparc64: perf: Add sanity checking on addresses in user stack
Processes are getting killed (sigbus or segv) while walking userspace callchains when using perf. In some instances I have seen ufp = 0x7ff which does not seem like a proper stack address. This patch adds a function to run validity checks against the address before attempting the copy_from_user. The checks are copied from the x86 version as a start point with the addition of a 4-byte alignment check. Signed-off-by: David Ahern <david.ahern@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
||
|
David Ahern
|
2bf7c3efc3 |
sparc64: Convert BUG_ON to warning
Pagefault handling has a BUG_ON path that panics the system. Convert it to
a warning instead. There is no need to bring down the system for this kind
of failure.
The following was hit while running:
perf sched record -g -- make -j 16
[3609412.782801] kernel BUG at /opt/dahern/linux.git/arch/sparc/mm/fault_64.c:416!
[3609412.782833] \|/ ____ \|/
[3609412.782833] "@'/ .. \`@"
[3609412.782833] /_| \__/ |_\
[3609412.782833] \__U_/
[3609412.782870] cat(4516): Kernel bad sw trap 5 [#1]
[3609412.782889] CPU: 0 PID: 4516 Comm: cat Tainted: G E 4.1.0-rc8+ #6
[3609412.782909] task: fff8000126e31f80 ti: fff8000110d90000 task.ti: fff8000110d90000
[3609412.782931] TSTATE: 0000004411001603 TPC: 000000000096b164 TNPC: 000000000096b168 Y: 0000004e Tainted: G E
[3609412.782964] TPC: <do_sparc64_fault+0x5e4/0x6a0>
[3609412.782979] g0: 000000000096abe0 g1: 0000000000d314c4 g2: 0000000000000000 g3: 0000000000000001
[3609412.783009] g4: fff8000126e31f80 g5: fff80001302d2000 g6: fff8000110d90000 g7: 00000000000000ff
[3609412.783045] o0: 0000000000aff6a8 o1: 00000000000001a0 o2: 0000000000000001 o3: 0000000000000054
[3609412.783080] o4: fff8000100026820 o5: 0000000000000001 sp: fff8000110d935f1 ret_pc: 000000000096b15c
[3609412.783117] RPC: <do_sparc64_fault+0x5dc/0x6a0>
[3609412.783137] l0: 000007feff996000 l1: 0000000000030001 l2: 0000000000000004 l3: fff8000127bd0120
[3609412.783174] l4: 0000000000000054 l5: fff8000127bd0188 l6: 0000000000000000 l7: fff8000110d9dba8
[3609412.783210] i0: fff8000110d93f60 i1: fff8000110ca5530 i2: 000000000000003f i3: 0000000000000054
[3609412.783244] i4: fff800010000081a i5: fff8000100000398 i6: fff8000110d936a1 i7: 0000000000407c6c
[3609412.783286] I7: <sparc64_realfault_common+0x10/0x20>
[3609412.783308] Call Trace:
[3609412.783329] [0000000000407c6c] sparc64_realfault_common+0x10/0x20
[3609412.783353] Disabling lock debugging due to kernel taint
[3609412.783379] Caller[0000000000407c6c]: sparc64_realfault_common+0x10/0x20
[3609412.783449] Caller[fff80001002283e4]: 0xfff80001002283e4
[3609412.783471] Instruction DUMP: 921021a0 7feaff91 901222a8 <91d02005> 82086100 02f87f7b 808a2873 81cfe008 01000000
[3609412.783542] Kernel panic - not syncing: Fatal exception
[3609412.784605] Press Stop-A (L1-A) to return to the boot prom
[3609412.784615] ---[ end Kernel panic - not syncing: Fatal exception
With this patch rather than a panic I occasionally get something like this:
perf sched record -g -m 1024 -- make -j N
where N is based on number of cpus (128 to 1024 for a T7-4 and 8 for an 8 cpu
VM on a T5-2).
WARNING: CPU: 211 PID: 52565 at /opt/dahern/linux.git/arch/sparc/mm/fault_64.c:417 do_sparc64_fault+0x340/0x70c()
address (7feffcd6000) != regs->tpc (fff80001004873c0)
Modules linked in: ipt_REJECT nf_reject_ipv4 nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_reject_ipv6 xt_tcpudp nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables x_tables ipv6 cdc_ether usbnet mii ixgbe mdio igb i2c_algo_bit i2c_core ptp crc32c_sparc64 camellia_sparc64 des_sparc64 des_generic md5_sparc64 sha512_sparc64 sha1_sparc64 uio_pdrv_genirq uio usb_storage mpt3sas scsi_transport_sas raid_class aes_sparc64 sunvnet sunvdc sha256_sparc64(E) sha256_generic(E)
CPU: 211 PID: 52565 Comm: ld Tainted: G W E 4.1.0-rc8+ #19
Call Trace:
[000000000045ce30] warn_slowpath_common+0x7c/0xa0
[000000000045ceec] warn_slowpath_fmt+0x30/0x40
[000000000098ad64] do_sparc64_fault+0x340/0x70c
[0000000000407c2c] sparc64_realfault_common+0x10/0x20
---[ end trace 62ee02065a01a049 ]---
ld[52565]: segfault at fff80001004873c0 ip fff80001004873c0 (rpc fff8000100158868) sp 000007feffcd70e1 error 30002 in libc-2.12.so[fff8000100410000+184000]
The segfault is horrible, but better than a system panic.
An 8-cpu VM on a T5-2 also showed the above traces from time to time,
so it is a general problem and not specific to the T7 or baremetal.
Signed-off-by: David Ahern <david.ahern@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
||
|
David Ahern
|
c17af4dd96 |
sparc: perf: Disable pagefaults while walking userspace stacks
Page faults generated walking userspace stacks can call schedule to switch
out the task. When collecting callchains for scheduler tracepoints this
causes a deadlock as the tracepoints can be hit with the runqueue lock held:
[ 8138.159054] WARNING: CPU: 758 PID: 12488 at /opt/dahern/linux.git/arch/sparc/kernel/nmi.c:80 perfctr_irq+0x1f8/0x2b4()
[ 8138.203152] Watchdog detected hard LOCKUP on cpu 758
[ 8138.410969] CPU: 758 PID: 12488 Comm: perf Not tainted 4.0.0-rc6+ #6
[ 8138.437146] Call Trace:
[ 8138.447193] [000000000045cdd4] warn_slowpath_common+0x7c/0xa0
[ 8138.471238] [000000000045ce90] warn_slowpath_fmt+0x30/0x40
[ 8138.494189] [0000000000983e38] perfctr_irq+0x1f8/0x2b4
[ 8138.515716] [00000000004209f4] tl0_irq15+0x14/0x20
[ 8138.535791] [00000000009839ec] _raw_spin_trylock_bh+0x68/0x108
[ 8138.560180] [0000000000980018] __schedule+0xcc/0x710
[ 8138.580981] [00000000009806dc] preempt_schedule_common+0x10/0x3c
[ 8138.606082] [000000000098077c] _cond_resched+0x34/0x44
[ 8138.627603] [0000000000565990] kmem_cache_alloc_node+0x24/0x1a0
[ 8138.652345] [0000000000450b60] tsb_grow+0xac/0x488
[ 8138.672429] [0000000000985040] do_sparc64_fault+0x4dc/0x6e4
[ 8138.695736] [0000000000407c2c] sparc64_realfault_common+0x10/0x20
[ 8138.721202] [00000000006f2e24] NG4copy_from_user+0xa4/0x3c0
[ 8138.744510] [000000000044f900] perf_callchain_user+0x5c/0x6c
[ 8138.768182] [0000000000517b5c] perf_callchain+0x16c/0x19c
[ 8138.790774] [0000000000515f84] perf_prepare_sample+0x68/0x218
[ 8138.814801] ---[ end trace 42ca6294b1ff7573 ]---
As with PowerPC (
|
||
|
Jean Delvare
|
9ea650c804 |
firmware: dmi: struct dmi_header should be packed
Apparently the compiler does fine without it, but it feels safer and clearer to add the missing attribute. Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Jean Delvare
|
d1d8704c48 |
firmware: dmi_scan: Coding style cleanups
Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Ivan Khoronzhuk
|
863ef5ba29 |
Documentation: ABI: sysfs-firmware-dmi: add -entries suffix to file name
The dmi-sysfs module adds DMI table structures entries under /sys/firmware/dmi/entries only, so rename documentation file to sysfs-firmware-dmi-entries as more appropriate. Without renaming it's confusing to differ this from sysfs-firmware-dmi-tables that adds raw DMI table and actually adds "dmi" kobject. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com> Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Ivan Khoronzhuk
|
d7f96f97c4 |
firmware: dmi_scan: add SBMIOS entry and DMI tables
Some utils, like dmidecode and smbios, need to access SMBIOS entry table area in order to get information like SMBIOS version, size, etc. Currently it's done via /dev/mem. But for situation when /dev/mem usage is disabled, the utils have to use dmi sysfs instead, which doesn't represent SMBIOS entry and adds code/delay redundancy when direct access for table is needed. So this patch creates dmi/tables and adds SMBIOS entry point to allow utils in question to work correctly without /dev/mem. Also patch adds raw dmi table to simplify dmi table processing in user space, as proposed by Jean Delvare. Tested-by: Roy Franz <roy.franz@linaro.org> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com> Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Jean Delvare
|
6e0ad59e3d |
firmware: dmi_scan: Trim DMI table length before exporting it
The SMBIOS v3 entry points specify a maximum length for the DMI table, not the exact length. Thus there may be garbage after the end-of-table marker, which we don't want to export to user-space. Adjust dmi_len when we find the end-of-table marker, so that only the actual table payload is exported. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com> |
||
|
Ivan Khoronzhuk
|
eb4c5ea50e |
firmware: dmi_scan: Rename dmi_table to dmi_decode_table
The "dmi_table" function looks like data instance, but it does DMI table decode. This patch renames it to "dmi_decode_table" name as more appropriate. That allows us to use "dmi_table" name for correct purposes. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@globallogic.com> Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Jean Delvare
|
d4aeef9323 |
firmware: dmi: List my quilt tree
I'll be maintaining the pending patches to the dmi_scan and dmi-id drivers as a quilt tree. Signed-off-by: Jean Delvare <jdelvare@suse.de> |
||
|
Jean Delvare
|
17cd5bd539 |
firmware: dmi_scan: Only honor end-of-table for 64-bit tables
A 32-bit entry point to a DMI table says how many structures the table
contains. The SMBIOS specification explicitly says that end-of-table
markers should be ignored if they are not actually at the end of the
DMI table. So only honor the end-of-table marker for tables accessed
through 64-bit entry points, as they do not specify a structure count.
Fixes:
|
||
|
Linus Torvalds
|
aefbef10e3 |
Merge branch 'akpm' (patches from Andrew)
Merge first patchbomb from Andrew Morton: - a few misc things - ocfs2 udpates - kernel/watchdog.c feature work (took ages to get right) - most of MM. A few tricky bits are held up and probably won't make 4.2. * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (91 commits) mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc() mm, thp: respect MPOL_PREFERRED policy with non-local node tmpfs: truncate prealloc blocks past i_size mm/memory hotplug: print the last vmemmap region at the end of hot add memory mm/mmap.c: optimization of do_mmap_pgoff function mm: kmemleak: optimise kmemleak_lock acquiring during kmemleak_scan mm: kmemleak: avoid deadlock on the kmemleak object insertion error path mm: kmemleak: do not acquire scan_mutex in kmemleak_do_cleanup() mm: kmemleak: fix delete_object_*() race when called on the same memory block mm: kmemleak: allow safe memory scanning during kmemleak disabling memcg: convert mem_cgroup->under_oom from atomic_t to int memcg: remove unused mem_cgroup->oom_wakeups frontswap: allow multiple backends x86, mirror: x86 enabling - find mirrored memory ranges mm/memblock: allocate boot time data structures from mirrored memory mm/memblock: add extra "flags" to memblock to allow selection of memory based on attribute mm: do not ignore mapping_gfp_mask in page cache allocation paths mm/cma.c: fix typos in comments mm/oom_kill.c: print points as unsigned int mm/hugetlb: handle races in alloc_huge_page and hugetlb_reserve_pages ... |
||
|
Linus Torvalds
|
266da6f142 |
Miscellaneous pstore improvements
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||
|
Linus Torvalds
|
cfcc0ad47f |
Merge tag 'for-f2fs-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim: "New features: - per-file encryption (e.g., ext4) - FALLOC_FL_ZERO_RANGE - FALLOC_FL_COLLAPSE_RANGE - RENAME_WHITEOUT Major enhancement/fixes: - recovery broken superblocks - enhance f2fs_trim_fs with a discard_map - fix a race condition on dentry block allocation - fix a deadlock during summary operation - fix a missing fiemap result .. and many minor bug fixes and clean-ups were done" * tag 'for-f2fs-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (83 commits) f2fs: do not trim preallocated blocks when truncating after i_size f2fs crypto: add alloc_bounce_page f2fs crypto: fix to handle errors likewise ext4 f2fs: drop the volatile_write flag only f2fs: skip committing valid superblock f2fs: setting discard option in parse_options() f2fs: fix to return exact trimmed size f2fs: support FALLOC_FL_INSERT_RANGE f2fs: hide common code in f2fs_replace_block f2fs: disable the discard option when device doesn't support f2fs crypto: remove alloc_page for bounce_page f2fs: fix a deadlock for summary page lock vs. sentry_lock f2fs crypto: clean up error handling in f2fs_fname_setup_filename f2fs crypto: avoid f2fs_inherit_context for symlink f2fs crypto: do not set encryption policy for non-directory by ioctl f2fs crypto: allow setting encryption policy once f2fs crypto: check context consistent for rename2 f2fs: avoid duplicated code by reusing f2fs_read_end_io f2fs crypto: use per-inode tfm structure f2fs: recovering broken superblock during mount ... |
||
|
Linus Torvalds
|
a7296b49fb |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull UDF fixes and cleanups from Jan Kara: "The contains some small fixes and improvements in error handling for UDF. Bundled is also one ext3 coding style fix and a fix in quota documentation" * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: udf: fix udf_load_pvoldesc() udf: remove double err declaration in udf_file_write_iter() UDF: support NFSv2 export fs: ext3: super: fixed a space coding style issue quota: Update documentation udf: Return error from udf_find_entry() udf: Make udf_get_filename() return error instead of 0 length file name udf: bug on exotic flag in udf_get_filename() udf: improve error management in udf_CS0toNLS() udf: improve error management in udf_CS0toUTF8() udf: unicode: update function name in comments udf: remove unnecessary test in udf_build_ustr_exact() udf: Return -ENOMEM when allocation fails in udf_get_filename() |
||
|
Linus Torvalds
|
1e467e68e5 |
Documentation updates for 4.2
The main thing here is Ingo's big subdirectory documenting feature support for each architecture. Beyond that, it's the usual pile of fixes, tweaks, and small additions. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJVi0g2AAoJEI3ONVYwIuV6Me4QAIfa79z05ABSjlyWaKw46plH lULR9cyHdR59JVPHKjSOfT9/c+GOdoz6kkXQoe/TgVyj5fRB8seUW5GJXCASndkk aVd4c6yKFH1NISXsSdVQC0JbpgAURgcSR6x59It++fG3NINvXronFTWGMBHMLKcI A2hM2jNP914Dy5r4ipWZKzF1KxIlqK9kmLxlNoE6/LoQfBhh1dMdnyfuM11sguAy s5pr9JeCPbWC0RE7st/qEivXF4lpj6hd3XoYfM2Y+oukj5xEPQevLTLHOgtesnx9 guUAul5Sw27n+Dx8I0Qxf1n+5SkrijoAa72g5vAxTs+ilOey67qba012NaYSy7RK s15XOIZ/1JTS9JjkO7GR5NbG6AiIIAH5P+Y501ivCIrsWciTOgKj7cOzakIEV8/P NX4120Lh5lbBrWeYkl8WbgMO0Me8cThbALC+rncF/wjvGyREKyxNlZ9qvBqmHYjG 5Et2DT+rANaDmmblgMK3tX/zI1g3pN51e+CRF+Hzh1jZD3MZ/i+KS4qgfGFDzMIj uoniO5VfyD4zRbyv4Grg7XMpXiP8xFxKDypglYiXzzwlkarUgbMGOoFE7AkiPOKB t9gLPetbDsDyU/bSpzHlfObZp+q+pCxHPhyLS7hxEi3gBxYajIMbkpHHJugnE0+H TfkIhy6QQm1vAPTpRXaE =ODt8 -----END PGP SIGNATURE----- Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6 Pull documentation updates from Jonathan Corbet: "The main thing here is Ingo's big subdirectory documenting feature support for each architecture. Beyond that, it's the usual pile of fixes, tweaks, and small additions" * tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (79 commits) doc:md: fix typo in md.txt. Documentation/mic/mpssd: don't build x86 userspace when cross compiling Documentation/prctl: don't build tsc tests when cross compiling Documentation/vDSO: don't build tests when cross compiling Doc:ABI/testing: Fix typo in sysfs-bus-fcoe Doc: Docbook: Change wikipedia's URL from http to https in scsi.tmpl Doc: Change wikipedia's URL from http to https Documentation/kernel-parameters: add missing pciserial to the earlyprintk Doc:pps: Fix typo in pps.txt kbuild : Fix documentation of INSTALL_HDR_PATH Documentation: filesystems: updated struct file_operations documentation in vfs.txt kbuild: edit explanation of clean-files variable Doc: ja_JP: Fix typo in HOWTO Move freefall program from Documentation/ to tools/ Documentation: ARM: EXYNOS: Describe boot loaders interface Doc:nfc: Fix typo in nfc-hci.txt vfs: Minor documentation fix Doc: networking: txtimestamp: fix printf format warning Documentation, intel_pstate: Improve legacy mode internal governors description Documentation: extend use case for EXPORT_SYMBOL_GPL() ... |
||
|
Linus Torvalds
|
14738e0331 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov: "Thanks to Samuel Thibault input device (keyboard) LEDs are no longer hardwired within the input core but use LED subsystem and so allow use of different triggers; Hans de Goede did a large update for the ALPS touchpad driver; we have new TI drv2665 haptics driver and DA9063 OnKey driver, and host of other drivers got various fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (55 commits) Input: pixcir_i2c_ts - fix receive error MAINTAINERS: remove non existent input mt git tree Input: improve usage of gpiod API tty/vt/keyboard: define LED triggers for VT keyboard lock states tty/vt/keyboard: define LED triggers for VT LED states Input: export LEDs as class devices in sysfs Input: cyttsp4 - use swap() in cyttsp4_get_touch() Input: goodix - do not explicitly set evbits in input device Input: goodix - export id and version read from device Input: goodix - fix variable length array warning Input: goodix - fix alignment issues Input: add OnKey driver for DA9063 MFD part Input: elan_i2c - add product IDs FW names Input: elan_i2c - add support for multi IC type and iap format Input: focaltech - report finger width to userspace tty: remove platform_sysrq_reset_seq Input: synaptics_i2c - use proper boolean values Input: psmouse - use true instead of 1 for boolean values Input: cyapa - fix a few typos in comments Input: stmpe-ts - enforce device tree only mode ... |
||
|
Linus Torvalds
|
45471cd98d |
EDAC changes, v2:
* New APM X-Gene SoC EDAC driver (Loc Ho) * AMD error injection module improvements (Aravind Gopalakrishnan) * Altera Arria 10 support (Thor Thayer) * misc fixes and cleanups all over the place -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJViuInAAoJEBLB8Bhh3lVKHT8QAKkHIMreO8obo09haxNJlfdF BaG7SNEDhvcgQ1B76RsjnjkUpsivvUt+mCYMP+BxcAqFrTA33UZCCOK5tEhGb1wr matRdR6+aezqAl2e/0/Ti25bWOkDxcOeazh2TyezuyIXtaJjOq1oZC7OaYGmxPun NlZY+/uY1eiHlewKsK04y8G8J5i4wGoKnuxBvOyELT90+a+fLfAOshAp0D4r0piB Znv0ydsHlu+Wx57slg1DktlsyswmcGS9WfWwwTlELOLulKgN8wEAVYzUB5pJzNbz ehq0J4wYz95juXADC4M4tEjErHVJNl6PbyMqwt0+XUUJ1NSgOj7Q6iqwxDoZX8km oxiLVydQBtoIzF1LojFKAVZDFnrMKHKwK3RaDaUJjTI90+tVzEU8xsBlUf6+EgD2 Ss2RH8Gfuf52RdtwHh9++T1ur5rM9YNCAm31msq06mcOf0bEtmDbhZ+fVC5mjhqB fIb3hxnk0r2BVg+ZCN/boxGS6RzUtYVcCXaBPDMeHcg9BEEds70KCFEcsX7TvJIg 5/SHI+033MylqkX2zrgDQLj7CQk3R0jaotHVbdhLupyOldcM7r5uF+VO84drNWGN GfM2lpyE/swZWnzKuotgYIGR1XvFjtJAVAyNGIvwP+ajjTsqXzEnLSLClY5LWfYd nSSSMpCCqsEmhoWftOix =Id4f -----END PGP SIGNATURE----- Merge tag 'edac_for_4.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp Pull EDAC updates from Borislav Petkov: - New APM X-Gene SoC EDAC driver (Loc Ho) - AMD error injection module improvements (Aravind Gopalakrishnan) - Altera Arria 10 support (Thor Thayer) - misc fixes and cleanups all over the place * tag 'edac_for_4.2_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp: (28 commits) EDAC: Update Documentation/edac.txt EDAC: Fix typos in Documentation/edac.txt EDAC, mce_amd_inj: Set MISCV on injection EDAC, mce_amd_inj: Move bit preparations before the injection EDAC, mce_amd_inj: Cleanup and simplify README EDAC, altera: Do not allow suspend when EDAC is enabled EDAC, mce_amd_inj: Make inj_type static arm: socfpga: dts: Add Arria10 SDRAM EDAC DTS support EDAC, altera: Add Arria10 EDAC support EDAC, altera: Refactor for Altera CycloneV SoC EDAC, altera: Generalize driver to use DT Memory size EDAC, mce_amd_inj: Add README file EDAC, mce_amd_inj: Add individual permissions field to dfs_node EDAC, mce_amd_inj: Modify flags attribute to use string arguments EDAC, mce_amd_inj: Read out number of MCE banks from the hardware EDAC, mce_amd_inj: Use MCE_INJECT_GET macro for bank node too EDAC, xgene: Fix cpuid abuse EDAC, mpc85xx: Extend error address to 64 bit EDAC, mpc8xxx: Adapt for FSL SoC EDAC, edac_stub: Drop arch-specific include ... |
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|
Linus Torvalds
|
93a4b1b946 |
Here is the bulk of pin control changes for the v4.2 series:
- Core functionality:
- Enable exclusive pin ownership: it is possible to flag a pin
controller so that GPIO and other functions cannot use a single
pin simultaneously.
- New drivers:
- NXP LPC18xx System Control Unit pin controller
- Imagination Pistachio SoC pin controller
- New subdrivers:
- Freescale i.MX7d SoC
- Intel Sunrisepoint-H PCH
- Renesas PFC R8A7793
- Renesas PFC R8A7794
- Mediatek MT6397, MT8127
- SiRF Atlas 7
- Allwinner A33
- Qualcomm MSM8660
- Marvell Armada 395
- Rockchip RK3368
- Cleanups:
- A big cleanup of the Marvell MVEBU driver rectifying it to
correspond to reality
- Drop platform device probing from the SH PFC driver, we are now a
DT only shop for SuperH
- Drop obsolte multi-platform check for SH PFC
- Various janitorial: constification, grammar etc
- Improvements:
- The AT91 GPIO portions now supports the set_multiple() feature
- Split out SPI pins on the Xilinx Zynq
- Support DTs without specific function nodes in the i.MX driver
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Merge tag 'pinctrl-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control updates from Linus Walleij:
"Here is the bulk of pin control changes for the v4.2 series: Quite a
lot of new SoC subdrivers and two new main drivers this time, apart
from that business as usual.
Details:
Core functionality:
- Enable exclusive pin ownership: it is possible to flag a pin
controller so that GPIO and other functions cannot use a single pin
simultaneously.
New drivers:
- NXP LPC18xx System Control Unit pin controller
- Imagination Pistachio SoC pin controller
New subdrivers:
- Freescale i.MX7d SoC
- Intel Sunrisepoint-H PCH
- Renesas PFC R8A7793
- Renesas PFC R8A7794
- Mediatek MT6397, MT8127
- SiRF Atlas 7
- Allwinner A33
- Qualcomm MSM8660
- Marvell Armada 395
- Rockchip RK3368
Cleanups:
- A big cleanup of the Marvell MVEBU driver rectifying it to
correspond to reality
- Drop platform device probing from the SH PFC driver, we are now a
DT only shop for SuperH
- Drop obsolte multi-platform check for SH PFC
- Various janitorial: constification, grammar etc
Improvements:
- The AT91 GPIO portions now supports the set_multiple() feature
- Split out SPI pins on the Xilinx Zynq
- Support DTs without specific function nodes in the i.MX driver"
* tag 'pinctrl-v4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (99 commits)
pinctrl: rockchip: add support for the rk3368
pinctrl: rockchip: generalize perpin driver-strength setting
pinctrl: sh-pfc: r8a7794: add SDHI pin groups
pinctrl: sh-pfc: r8a7794: add MMCIF pin groups
pinctrl: sh-pfc: add R8A7794 PFC support
pinctrl: make pinctrl_register() return proper error code
pinctrl: mvebu: armada-39x: add support for Armada 395 variant
pinctrl: mvebu: armada-39x: add missing SATA functions
pinctrl: mvebu: armada-39x: add missing PCIe functions
pinctrl: mvebu: armada-38x: add ptp functions
pinctrl: mvebu: armada-38x: add ua1 functions
pinctrl: mvebu: armada-38x: add nand functions
pinctrl: mvebu: armada-38x: add sata functions
pinctrl: mvebu: armada-xp: add dram functions
pinctrl: mvebu: armada-xp: add nand rb function
pinctrl: mvebu: armada-xp: add spi1 function
pinctrl: mvebu: armada-39x: normalize ref clock naming
pinctrl: mvebu: armada-xp: rename spi to spi0
pinctrl: mvebu: armada-370: align spi1 clock pin naming
pinctrl: mvebu: armada-370: align VDD cpu-pd pin naming with datasheet
...
|
||
|
Linus Torvalds
|
d59b92f93d |
== Changes to existing drivers ==
- Supply MODULE_DEVICE_TABLE() to ensure probing - Constify struct; da9052_bl - Enable compile test; lcd_l4f00242t03, lcd_lms283fg05, backlight_gpio - Suspend/resume bugfix; lp855x_bl - devm_gpiod_get_optional() API fixup; pwm_bl - Error handling fixup; backlight -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAABAgAGBQJViXR7AAoJEFGvii+H/HdhZPsP/3kxXQNCt2voEj96MFLXWLwq 1cbWbPboslNkdYPY9ygLTIqop/NOoEwiZMLE2Ea3uBDFewLU27vEX4waG+ILITjG /KxBAUXnNvFTrv9X+5hiOm6D+6kLk2M2eEygSC6f9QgBXP4VjApkVvpehdDKWT5x X11wlfx/TYhLcj5iggyW39fACp8Aig7LvOigS7fjfhwn1PAjWVw6NLrxmIlysWbH 8qMfL0u8Ks5BYSh4xr5ATrB6OLx5Hu3mv9d8AK8o4XsRXOrFtR/dMThOLcJq/bFi 4Vp4roi/30RSpow1yKPS3+TBRFbn2PG+6G6GVbWCO/uVkQiaxteyM79P0gEy5Y2a 8WvV3vOMYY1/FszCOIfrJbj4No5/Bc2fObLXYDursLYMOPhUNrWeyRxbLfHTpKR3 kim8XFGzLE5qFLqQWheqkHDq24y1iz6fl4YEZ8avf1rnDfzNJx8fnHk2uXZrW6ru HdjXbGC4pht1j6uM+DDROZ3iM5+2AMb/ASPLSCqslXXG82BCva3wasrMd3RttEQN bUltoWgWAMonIYoNx3CYwOGS9sWFllq1b0dTl1qDQPRT55sR4zcMZbMp16A0whJ7 bJQMflbkgWDCeiMg5vXrImxmBBwfAe6IQ3yfEMUNNf+CzJxVnGjvpWvDWHo5iqhd Ul8lq/XdnXvpSSUugWhM =8cYG -----END PGP SIGNATURE----- Merge tag 'backlight-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight Pull backlight updates from Lee Jones: "Changes to existing drivers: - supply MODULE_DEVICE_TABLE() to ensure probing - constify struct; da9052_bl - enable compile test; lcd_l4f00242t03, lcd_lms283fg05, backlight_gpio - suspend/resume bugfix; lp855x_bl - devm_gpiod_get_optional() API fixup; pwm_bl - error handling fixup; backlight" * tag 'backlight-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: backlight: Change the return type of backlight_update_status() to int backlight: pwm_bl: Simplify usage of devm_gpiod_get_optional backlight: lp855x: Don't clear level on suspend/blank backlight: Allow compile test of GPIO consumers if !GPIOLIB video: backlight: da9052: Constify platform_device_id gpio-backlight: Discover driver during boot time |
||
|
Larry Finger
|
8a8c35fadf |
mm: kmemleak_alloc_percpu() should follow the gfp from per_alloc()
Beginning at commit
|
||
|
Vlastimil Babka
|
0867a57c4f |
mm, thp: respect MPOL_PREFERRED policy with non-local node
Since commit |
||
|
Josef Bacik
|
afa2db2fb6 |
tmpfs: truncate prealloc blocks past i_size
One of the rocksdb people noticed that when you do something like this
fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 10M)
pwrite(fd, buf, 5M, 0)
ftruncate(5M)
on tmpfs, the file would still take up 10M: which led to super fun
issues because we were getting ENOSPC before we thought we should be
getting ENOSPC. This patch fixes the problem, and mirrors what all the
other fs'es do (and was agreed to be the correct behaviour at LSF).
I tested it locally to make sure it worked properly with the following
xfs_io -f -c "falloc -k 0 10M" -c "pwrite 0 5M" -c "truncate 5M" file
Without the patch we have "Blocks: 20480", with the patch we have the
correct value of "Blocks: 10240".
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Zhu Guihua
|
c435a39057 |
mm/memory hotplug: print the last vmemmap region at the end of hot add memory
When hot add two nodes continuously, we found the vmemmap region info is
a bit messed. The last region of node 2 is printed when node 3 hot
added, like the following:
Initmem setup node 2 [mem 0x0000000000000000-0xffffffffffffffff]
On node 2 totalpages: 0
Built 2 zonelists in Node order, mobility grouping on. Total pages: 16090539
Policy zone: Normal
init_memory_mapping: [mem 0x40000000000-0x407ffffffff]
[mem 0x40000000000-0x407ffffffff] page 1G
[ffffea1000000000-ffffea10001fffff] PMD -> [ffff8a077d800000-ffff8a077d9fffff] on node 2
[ffffea1000200000-ffffea10003fffff] PMD -> [ffff8a077de00000-ffff8a077dffffff] on node 2
...
[ffffea101f600000-ffffea101f9fffff] PMD -> [ffff8a074ac00000-ffff8a074affffff] on node 2
[ffffea101fa00000-ffffea101fdfffff] PMD -> [ffff8a074a800000-ffff8a074abfffff] on node 2
Initmem setup node 3 [mem 0x0000000000000000-0xffffffffffffffff]
On node 3 totalpages: 0
Built 3 zonelists in Node order, mobility grouping on. Total pages: 16090539
Policy zone: Normal
init_memory_mapping: [mem 0x60000000000-0x607ffffffff]
[mem 0x60000000000-0x607ffffffff] page 1G
[ffffea101fe00000-ffffea101fffffff] PMD -> [ffff8a074a400000-ffff8a074a5fffff] on node 2 <=== node 2 ???
[ffffea1800000000-ffffea18001fffff] PMD -> [ffff8a074a600000-ffff8a074a7fffff] on node 3
[ffffea1800200000-ffffea18005fffff] PMD -> [ffff8a074a000000-ffff8a074a3fffff] on node 3
[ffffea1800600000-ffffea18009fffff] PMD -> [ffff8a0749c00000-ffff8a0749ffffff] on node 3
...
The cause is the last region was missed at the and of hot add memory,
and p_start, p_end, node_start were not reset, so when hot add memory to
a new node, it will consider they are not contiguous blocks and print
the previous one. So we print the last vmemmap region at the end of hot
add memory to avoid the confusion.
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Piotr Kwapulinski
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e37609bb36 |
mm/mmap.c: optimization of do_mmap_pgoff function
The simple check for zero length memory mapping may be performed earlier. So that in case of zero length memory mapping some unnecessary code is not executed at all. It does not make the code less readable and saves some CPU cycles. Signed-off-by: Piotr Kwapulinski <kwapulinski.piotr@gmail.com> Acked-by: Michal Hocko <mhocko@suse.cz> Acked-by: Rik van Riel <riel@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Catalin Marinas
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93ada579b0 |
mm: kmemleak: optimise kmemleak_lock acquiring during kmemleak_scan
The kmemleak memory scanning uses finer grained object->lock spinlocks primarily to avoid races with the memory block freeing. However, the pointer lookup in the rb tree requires the kmemleak_lock to be held. This is currently done in the find_and_get_object() function for each pointer-like location read during scanning. While this allows a low latency on kmemleak_*() callbacks on other CPUs, the memory scanning is slower. This patch moves the kmemleak_lock outside the scan_block() loop, acquiring/releasing it only once per scanned memory block. The allow_resched logic is moved outside scan_block() and a new scan_large_block() function is implemented which splits large blocks in MAX_SCAN_SIZE chunks with cond_resched() calls in-between. A redundant (object->flags & OBJECT_NO_SCAN) check is also removed from scan_object(). With this patch, the kmemleak scanning performance is significantly improved: at least 50% with lock debugging disabled and over an order of magnitude with lock proving enabled (on an arm64 system). Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Catalin Marinas
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9d5a4c730d |
mm: kmemleak: avoid deadlock on the kmemleak object insertion error path
While very unlikely (usually kmemleak or sl*b bug), the create_object() function in mm/kmemleak.c may fail to insert a newly allocated object into the rb tree. When this happens, kmemleak disables itself and prints additional information about the object already found in the rb tree. Such printing is done with the parent->lock acquired, however the kmemleak_lock is already held. This is a potential race with the scanning thread which acquires object->lock and kmemleak_lock in a This patch removes the locking around the 'parent' object information printing. Such object cannot be freed or removed from object_tree_root and object_list since kmemleak_lock is already held. There is a very small risk that some of the object data is being modified on another CPU but the only downside is inconsistent information printing. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Catalin Marinas
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5f369f374b |
mm: kmemleak: do not acquire scan_mutex in kmemleak_do_cleanup()
The kmemleak_do_cleanup() work thread already waits for the kmemleak_scan thread to finish via kthread_stop(). Waiting in kthread_stop() while scan_mutex is held may lead to deadlock if kmemleak_scan_thread() also waits to acquire for scan_mutex. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Catalin Marinas
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e781a9ab48 |
mm: kmemleak: fix delete_object_*() race when called on the same memory block
Calling delete_object_*() on the same pointer is not a standard use case (unless there is a bug in the code calling kmemleak_free()). However, during kmemleak disabling (error or user triggered via /sys), there is a potential race between kmemleak_free() calls on a CPU and __kmemleak_do_cleanup() on a different CPU. The current delete_object_*() implementation first performs a look-up holding kmemleak_lock, increments the object->use_count and then re-acquires kmemleak_lock to remove the object from object_tree_root and object_list. This patch simplifies the delete_object_*() mechanism to both look up and remove an object from the object_tree_root and object_list atomically (guarded by kmemleak_lock). This allows safe concurrent calls to delete_object_*() on the same pointer without additional locking for synchronising the kmemleak_free_enabled flag. A side effect is a slight improvement in the delete_object_*() performance by avoiding acquiring kmemleak_lock twice and incrementing/decrementing object->use_count. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Catalin Marinas
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c5f3b1a51a |
mm: kmemleak: allow safe memory scanning during kmemleak disabling
The kmemleak scanning thread can run for minutes. Callbacks like kmemleak_free() are allowed during this time, the race being taken care of by the object->lock spinlock. Such lock also prevents a memory block from being freed or unmapped while it is being scanned by blocking the kmemleak_free() -> ... -> __delete_object() function until the lock is released in scan_object(). When a kmemleak error occurs (e.g. it fails to allocate its metadata), kmemleak_enabled is set and __delete_object() is no longer called on freed objects. If kmemleak_scan is running at the same time, kmemleak_free() no longer waits for the object scanning to complete, allowing the corresponding memory block to be freed or unmapped (in the case of vfree()). This leads to kmemleak_scan potentially triggering a page fault. This patch separates the kmemleak_free() enabling/disabling from the overall kmemleak_enabled nob so that we can defer the disabling of the object freeing tracking until the scanning thread completed. The kmemleak_free_part() is deliberately ignored by this patch since this is only called during boot before the scanning thread started. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org> Tested-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tejun Heo
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c2b42d3cad |
memcg: convert mem_cgroup->under_oom from atomic_t to int
memcg->under_oom tracks whether the memcg is under OOM conditions and is an atomic_t counter managed with mem_cgroup_[un]mark_under_oom(). While atomic_t appears to be simple synchronization-wise, when used as a synchronization construct like here, it's trickier and more error-prone due to weak memory ordering rules, especially around atomic_read(), and false sense of security. For example, both non-trivial read sites of memcg->under_oom are a bit problematic although not being actually broken. * mem_cgroup_oom_register_event() It isn't explicit what guarantees the memory ordering between event addition and memcg->under_oom check. This isn't broken only because memcg_oom_lock is used for both event list and memcg->oom_lock. * memcg_oom_recover() The lockless test doesn't have any explanation why this would be safe. mem_cgroup_[un]mark_under_oom() are very cold paths and there's no point in avoiding locking memcg_oom_lock there. This patch converts memcg->under_oom from atomic_t to int, puts their modifications under memcg_oom_lock and documents why the lockless test in memcg_oom_recover() is safe. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Tejun Heo
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f4b90b70b7 |
memcg: remove unused mem_cgroup->oom_wakeups
Since commit
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Dan Streetman
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d1dc6f1bcf |
frontswap: allow multiple backends
Change frontswap single pointer to a singly linked list of frontswap implementations. Update Xen tmem implementation as register no longer returns anything. Frontswap only keeps track of a single implementation; any implementation that registers second (or later) will replace the previously registered implementation, and gets a pointer to the previous implementation that the new implementation is expected to pass all frontswap functions to if it can't handle the function itself. However that method doesn't really make much sense, as passing that work on to every implementation adds unnecessary work to implementations; instead, frontswap should simply keep a list of all registered implementations and try each implementation for any function. Most importantly, neither of the two currently existing frontswap implementations in the kernel actually do anything with any previous frontswap implementation that they replace when registering. This allows frontswap to successfully manage multiple implementations by keeping a list of them all. Signed-off-by: Dan Streetman <ddstreet@ieee.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |