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565cbdc2fe
65815 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Mark Charlebois
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565cbdc2fe |
LLVMLinux: Add support for clang to compiler.h and new compiler-clang.h
Add a compiler-clang.h file to add specific macros needed for compiling the kernel with clang. Initially the only override required is the macro for silencing the compiler for a purposefully uninintialized variable. Author: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Signed-off-by: Behan Webster <behanw@converseincode.com> |
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Behan Webster
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aa93685afb |
LLVMLinux: Remove warning about returning an uninitialized variable
Fix uninitialized return code in default case in cmpxchg-local.h This patch fixes the code to prevent an uninitialized return value that is detected when compiling with clang. The bug produces numerous warnings when compiling the Linux kernel with clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Signed-off-by: Mark Charlebois <charlebm@gmail.com> Acked-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> |
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Linus Torvalds
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39de65aa2c |
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c updates from Wolfram Sang:
"Here is the pull request from the i2c subsystem. It got a little
delayed because I needed to wait for a dependency to be included
(commit b424080a9e08: "reset: Add optional resets and stubs"). Plus,
I had some email problems. All done now, the highlights are:
- drivers can now deprecate their use of i2c classes. That shouldn't
be used on embedded platforms anyhow and was often blindly
copy&pasted. This mechanism gives users time to switch away and
ultimately boot faster once the use of classes for those drivers is
gone for good.
- new drivers for QUP, Cadence, efm32
- tracepoint support for I2C and SMBus
- bigger cleanups for the mv64xxx, nomadik, and designware drivers
And the usual bugfixes, cleanups, feature additions. Most stuff has
been in linux-next for a while. Just some hot fixes and new drivers
were added a bit more recently."
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (63 commits)
i2c: cadence: fix Kconfig dependency
i2c: Add driver for Cadence I2C controller
i2c: cadence: Document device tree bindings
Documentation: i2c: improve section about flags mangling the protocol
i2c: qup: use proper type fro clk_freq
i2c: qup: off by ones in qup_i2c_probe()
i2c: efm32: fix binding doc
MAINTAINERS: update I2C web resources
i2c: qup: New bus driver for the Qualcomm QUP I2C controller
i2c: qup: Add device tree bindings information
i2c: i2c-xiic: deprecate class based instantiation
i2c: i2c-sirf: deprecate class based instantiation
i2c: i2c-mv64xxx: deprecate class based instantiation
i2c: i2c-designware-platdrv: deprecate class based instantiation
i2c: i2c-davinci: deprecate class based instantiation
i2c: i2c-bcm2835: deprecate class based instantiation
i2c: mv64xxx: Fix reset controller handling
i2c: omap: fix usage of IS_ERR_VALUE with pm_runtime_get_sync
i2c: efm32: new bus driver
i2c: exynos5: remove unnecessary cast of void pointer
...
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Linus Torvalds
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97e18dc007 |
MMC highlights for 3.15:
Core: - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior. - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V. - Add GPIO descriptor based slot-gpio card detect API. Drivers: - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c. - mmci: Support HW busy detection on ux500. - omap: Support MMC_ERASE. - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23. - rtsx: Support pre-req/post-req async. - sdhci: Add support for Realtek RTS5250 controllers. - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect. - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support. - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJTRLHLAAoJEHNBYZ7TNxYMoqEQAOULXl1SHt0aHn5I0cfdVnRm J3i56MqarwXQOse/qJrg8/uKsggAu0ivTlQ7x1h6bpXmzHqvOtZhSoO9BqGEvxOU WNeA9ouaKMx3gCpIAwl9Odox+d2E+91nRfxU3fZTDITy554fREXmIpWiidjFPR7n 2oHT0yvGuLjunTC8MhxSB0OsggoIDXDTVPxrcf2k+AcAZAMlCMDNirN9+JbhiVM9 PNESapMyQAbFy18BGzCt5lO2o6aRileaSdX4BFTW4lx2LSPryUVV3cnfIH4zlytW joVDWyU5kAtQgfhoEhTsWJld+cwHsMUrl/FOfhMvBWbPMxLJnbFx8b459nKJDM5j NUo29KQxxHgWblGYx+F5SYuTloqWtX5iQWsez9g38Z/3UtjHR++o3+auwTFsZFRe 7EusZqsXdKggx1iiW/5afgb+tFOiCe5WOOQv29YdqWurPhaSK2Nr1aprD4RRiMeT IG9qBLhHFLl8Pv0nTdEGbJHhAhihja6w2ul+i/8JSaDOYAGFbEn47MC8JfrKAnpw WovxkSqMroMhjI+51cwJnVtdczQWx5kpjqDY0VaJlKvOfcwyOuyTU+s2vrHVDMZS a0HgaXeVxr5IcDTz2zo1f6UbM4k2z/Ka0LOOSPqyOYOpFuT6VkXhgOVq6fsRpnaN /9CUirULwF5ej0oz38hk =6S8w -----END PGP SIGNATURE----- Merge tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc Pull MMC updates from Chris Ball: "MMC highlights for 3.15: Core: - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V - Add GPIO descriptor based slot-gpio card detect API Drivers: - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c - mmci: Support HW busy detection on ux500 - omap: Support MMC_ERASE - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23 - rtsx: Support pre-req/post-req async - sdhci: Add support for Realtek RTS5250 controllers - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs" * tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (102 commits) mmc: sdhci-acpi: Intel SDIO has broken card detect mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controller mmc: sdhci-msm: Add platform_execute_tuning implementation mmc: sdhci-msm: Initial support for Qualcomm chipsets mmc: sdhci-msm: Qualcomm SDHCI binding documentation sdhci: only reprogram retuning timer when flag is set mmc: rename ARCH_BCM to ARCH_BCM_MOBILE mmc: sdhci: Allow for irq being shared mmc: sdhci-acpi: Add device id 80860F16 mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14 mmc: slot-gpio: Add GPIO descriptor based CD GPIO API mmc: slot-gpio: Split out CD IRQ request into a separate function mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers Revert "dts: socfpga: Add support for SD/MMC on the SOCFPGA platform" mmc: sdhci-spear: use generic card detection gpio support mmc: sdhci-spear: remove support for power gpio mmc: sdhci-spear: simplify resource handling mmc: sdhci-spear: fix platform_data usage mmc: sdhci-spear: fix error handling paths for DT mmc: sdhci-bcm-kona: fix build errors when built-in ... |
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Linus Torvalds
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75ff24fa52 |
Merge branch 'for-3.15' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
"Highlights:
- server-side nfs/rdma fixes from Jeff Layton and Tom Tucker
- xdr fixes (a larger xdr rewrite has been posted but I decided it
would be better to queue it up for 3.16).
- miscellaneous fixes and cleanup from all over (thanks especially to
Kinglong Mee)"
* 'for-3.15' of git://linux-nfs.org/~bfields/linux: (36 commits)
nfsd4: don't create unnecessary mask acl
nfsd: revert v2 half of "nfsd: don't return high mode bits"
nfsd4: fix memory leak in nfsd4_encode_fattr()
nfsd: check passed socket's net matches NFSd superblock's one
SUNRPC: Clear xpt_bc_xprt if xs_setup_bc_tcp failed
NFSD/SUNRPC: Check rpc_xprt out of xs_setup_bc_tcp
SUNRPC: New helper for creating client with rpc_xprt
NFSD: Free backchannel xprt in bc_destroy
NFSD: Clear wcc data between compound ops
nfsd: Don't return NFS4ERR_STALE_STATEID for NFSv4.1+
nfsd4: fix nfs4err_resource in 4.1 case
nfsd4: fix setclientid encode size
nfsd4: remove redundant check from nfsd4_check_resp_size
nfsd4: use more generous NFS4_ACL_MAX
nfsd4: minor nfsd4_replay_cache_entry cleanup
nfsd4: nfsd4_replay_cache_entry should be static
nfsd4: update comments with obsolete function name
rpc: Allow xdr_buf_subsegment to operate in-place
NFSD: Using free_conn free connection
SUNRPC: fix memory leak of peer addresses in XPRT
...
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Linus Torvalds
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ce7613db2d |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull more networking updates from David Miller:
1) If a VXLAN interface is created with no groups, we can crash on
reception of packets. Fix from Mike Rapoport.
2) Missing includes in CPTS driver, from Alexei Starovoitov.
3) Fix string validations in isdnloop driver, from YOSHIFUJI Hideaki
and Dan Carpenter.
4) Missing irq.h include in bnxw2x, enic, and qlcnic drivers. From
Josh Boyer.
5) AF_PACKET transmit doesn't statistically count TX drops, from Daniel
Borkmann.
6) Byte-Queue-Limit enabled drivers aren't handled properly in
AF_PACKET transmit path, also from Daniel Borkmann.
Same problem exists in pktgen, and Daniel fixed it there too.
7) Fix resource leaks in driver probe error paths of new sxgbe driver,
from Francois Romieu.
8) Truesize of SKBs can gradually get more and more corrupted in NAPI
packet recycling path, fix from Eric Dumazet.
9) Fix uniprocessor netfilter build, from Florian Westphal. In the
longer term we should perhaps try to find a way for ARRAY_SIZE() to
work even with zero sized array elements.
10) Fix crash in netfilter conntrack extensions due to mis-estimation of
required extension space. From Andrey Vagin.
11) Since we commit table rule updates before trying to copy the
counters back to userspace (it's the last action we perform), we
really can't signal the user copy with an error as we are beyond the
point from which we can unwind everything. This causes all kinds of
use after free crashes and other mysterious behavior.
From Thomas Graf.
12) Restore previous behvaior of div/mod by zero in BPF filter
processing. From Daniel Borkmann.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
net: sctp: wake up all assocs if sndbuf policy is per socket
isdnloop: several buffer overflows
netdev: remove potentially harmful checks
pktgen: fix xmit test for BQL enabled devices
net/at91_ether: avoid NULL pointer dereference
tipc: Let tipc_release() return 0
at86rf230: fix MAX_CSMA_RETRIES parameter
mac802154: fix duplicate #include headers
sxgbe: fix duplicate #include headers
net: filter: be more defensive on div/mod by X==0
netfilter: Can't fail and free after table replacement
xen-netback: Trivial format string fix
net: bcmgenet: Remove unnecessary version.h inclusion
net: smc911x: Remove unused local variable
bonding: Inactive slaves should keep inactive flag's value
netfilter: nf_tables: fix wrong format in request_module()
netfilter: nf_tables: set names cannot be larger than 15 bytes
netfilter: nf_conntrack: reserve two bytes for nf_ct_ext->len
netfilter: Add {ipt,ip6t}_osf aliases for xt_osf
netfilter: x_tables: allow to use cgroup match for LOCAL_IN nf hooks
...
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Linus Torvalds
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e9f37d3a8d |
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
"Highlights:
- drm:
Generic display port aux features, primary plane support, drm
master management fixes, logging cleanups, enforced locking checks
(instead of docs), documentation improvements, minor number
handling cleanup, pseudofs for shared inodes.
- ttm:
add ability to allocate from both ends
- i915:
broadwell features, power domain and runtime pm, per-process
address space infrastructure (not enabled)
- msm:
power management, hdmi audio support
- nouveau:
ongoing GPU fault recovery, initial maxwell support, random fixes
- exynos:
refactored driver to clean up a lot of abstraction, DP support
moved into drm, LVDS bridge support added, parallel panel support
- gma500:
SGX MMU support, SGX irq handling, asle irq work fixes
- radeon:
video engine bringup, ring handling fixes, use dp aux helpers
- vmwgfx:
add rendernode support"
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (849 commits)
DRM: armada: fix corruption while loading cursors
drm/dp_helper: don't return EPROTO for defers (v2)
drm/bridge: export ptn3460_init function
drm/exynos: remove MODULE_DEVICE_TABLE definitions
ARM: dts: exynos4412-trats2: enable exynos/fimd node
ARM: dts: exynos4210-trats: enable exynos/fimd node
ARM: dts: exynos4412-trats2: add panel node
ARM: dts: exynos4210-trats: add panel node
ARM: dts: exynos4: add MIPI DSI Master node
drm/panel: add S6E8AA0 driver
ARM: dts: exynos4210-universal_c210: add proper panel node
drm/panel: add ld9040 driver
panel/ld9040: add DT bindings
panel/s6e8aa0: add DT bindings
drm/exynos: add DSIM driver
exynos/dsim: add DT bindings
drm/exynos: disallow fbdev initialization if no device is connected
drm/mipi_dsi: create dsi devices only for nodes with reg property
drm/mipi_dsi: add flags to DSI messages
Skip intel_crt_init for Dell XPS 8700
...
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Heiko Carstens
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5fb6b953bb |
include/linux/syscalls.h: add sys_renameat2() prototype
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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26c12d9334 |
Merge branch 'akpm' (incoming from Andrew)
Merge second patch-bomb from Andrew Morton: - the rest of MM - zram updates - zswap updates - exit - procfs - exec - wait - crash dump - lib/idr - rapidio - adfs, affs, bfs, ufs - cris - Kconfig things - initramfs - small amount of IPC material - percpu enhancements - early ioremap support - various other misc things * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (156 commits) MAINTAINERS: update Intel C600 SAS driver maintainers fs/ufs: remove unused ufs_super_block_third pointer fs/ufs: remove unused ufs_super_block_second pointer fs/ufs: remove unused ufs_super_block_first pointer fs/ufs/super.c: add __init to init_inodecache() doc/kernel-parameters.txt: add early_ioremap_debug arm64: add early_ioremap support arm64: initialize pgprot info earlier in boot x86: use generic early_ioremap mm: create generic early_ioremap() support x86/mm: sparse warning fix for early_memremap lglock: map to spinlock when !CONFIG_SMP percpu: add preemption checks to __this_cpu ops vmstat: use raw_cpu_ops to avoid false positives on preemption checks slub: use raw_cpu_inc for incrementing statistics net: replace __this_cpu_inc in route.c with raw_cpu_inc modules: use raw_cpu_write for initialization of per cpu refcount. mm: use raw_cpu ops for determining current NUMA node percpu: add raw_cpu_ops slub: fix leak of 'name' in sysfs_slab_add ... |
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Mark Salter
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9e5c33d7ae |
mm: create generic early_ioremap() support
This patch creates a generic implementation of early_ioremap() support based on the existing x86 implementation. early_ioremp() is useful for early boot code which needs to temporarily map I/O or memory regions before normal mapping functions such as ioremap() are available. Some architectures have optional MMU. In the no-MMU case, the remap functions simply return the passed in physical address and the unmap functions do nothing. Signed-off-by: Mark Salter <msalter@redhat.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Borislav Petkov <borislav.petkov@amd.com> Cc: Dave Young <dyoung@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Josh Triplett
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64b47e8fdb |
lglock: map to spinlock when !CONFIG_SMP
When the system has only one CPU, lglock is effectively a spinlock; map it directly to spinlock to eliminate the indirection and duplicate code. In addition to removing overhead, this drops 1.6k of code with a defconfig modified to have !CONFIG_SMP, and 1.1k with a minimal config. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Michal Marek <mmarek@suse.cz> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: David Howells <dhowells@redhat.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Lameter
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188a81409f |
percpu: add preemption checks to __this_cpu ops
We define a check function in order to avoid trouble with the include files. Then the higher level __this_cpu macros are modified to invoke the preemption check. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Christoph Lameter <cl@linux.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Tejun Heo <tj@kernel.org> Tested-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Lameter
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293b6a4c87 |
vmstat: use raw_cpu_ops to avoid false positives on preemption checks
vm counters are allowed to be racy. Use raw_cpu_ops to avoid the local_irq_disable overhead and to avoid preemption checks which will be added to the __this_cpu operations. [akpm@linux-foundation.org: Add comment. Again.] Signed-off-by: Christoph Lameter <cl@linux.com> Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Dave Chinner <dchinner@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Lameter
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dc322a99d3 |
mm: use raw_cpu ops for determining current NUMA node
With the preempt checking logic for __this_cpu_ops we will get false positives from locations in the code that use numa_node_id. Before the __this_cpu ops where introduced there were no checks for preemption present either. smp_raw_processor_id() was used. See http://www.spinics.net/lists/linux-numa/msg00641.html Therefore we need to use raw_cpu_read here to avoid false postives. Note that this issue has been discussed in prior years. If the process changes nodes after retrieving the current numa node then that is acceptable since most uses of numa_node etc are for optimization and not for correctness. There were suggestions to implement a raw_numa_node_id in order to do preempt checks for numa_node_id as well. But I think we better defer that to another patch since that would mean investigating how numa_node_id() is used throughout the kernel which would increase the scope of this patchset significantly. After all preemption was never checked before when numa_node_id() was used. Some sample traces: __this_cpu_read operation in preemptible [00000000] code: login/1456 caller is __this_cpu_preempt_check+0x2b/0x2d CPU: 0 PID: 1456 Comm: login Not tainted 3.12.0-rc4-cl-00062-g2fe80d3-dirty #185 Call Trace: dump_stack+0x4e/0x82 check_preemption_disabled+0xc5/0xe0 __this_cpu_preempt_check+0x2b/0x2d get_task_policy+0x1d/0x49 get_vma_policy+0x14/0x76 alloc_pages_vma+0x35/0xff handle_mm_fault+0x290/0x73b __do_page_fault+0x3fe/0x44d do_page_fault+0x9/0xc page_fault+0x22/0x30 generic_file_aio_read+0x38e/0x624 do_sync_read+0x54/0x73 vfs_read+0x9d/0x12a SyS_read+0x47/0x7e cstar_dispatch+0x7/0x23 caller is __this_cpu_preempt_check+0x2b/0x2d CPU: 0 PID: 1456 Comm: login Not tainted 3.12.0-rc4-cl-00062-g2fe80d3-dirty #185 Call Trace: dump_stack+0x4e/0x82 check_preemption_disabled+0xc5/0xe0 __this_cpu_preempt_check+0x2b/0x2d alloc_pages_current+0x8f/0xbc __page_cache_alloc+0xb/0xd __do_page_cache_readahead+0xf4/0x219 ra_submit+0x1c/0x20 ondemand_readahead+0x28c/0x2b4 page_cache_sync_readahead+0x38/0x3a generic_file_aio_read+0x261/0x624 do_sync_read+0x54/0x73 vfs_read+0x9d/0x12a SyS_read+0x47/0x7e cstar_dispatch+0x7/0x23 Signed-off-by: Christoph Lameter <cl@linux.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Alex Shi <alex.shi@intel.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Christoph Lameter
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b3ca1c10d7 |
percpu: add raw_cpu_ops
The kernel has never been audited to ensure that this_cpu operations are
consistently used throughout the kernel. The code generated in many
places can be improved through the use of this_cpu operations (which
uses a segment register for relocation of per cpu offsets instead of
performing address calculations).
The patch set also addresses various consistency issues in general with
the per cpu macros.
A. The semantics of __this_cpu_ptr() differs from this_cpu_ptr only
because checks are skipped. This is typically shown through a raw_
prefix. So this patch set changes the places where __this_cpu_ptr()
is used to raw_cpu_ptr().
B. There has been the long term wish by some that __this_cpu operations
would check for preemption. However, there are cases where preemption
checks need to be skipped. This patch set adds raw_cpu operations that
do not check for preemption and then adds preemption checks to the
__this_cpu operations.
C. The use of __get_cpu_var is always a reference to a percpu variable
that can also be handled via a this_cpu operation. This patch set
replaces all uses of __get_cpu_var with this_cpu operations.
D. We can then use this_cpu RMW operations in various places replacing
sequences of instructions by a single one.
E. The use of this_cpu operations throughout will allow other arches than
x86 to implement optimized references and RMV operations to work with
per cpu local data.
F. The use of this_cpu operations opens up the possibility to
further optimize code that relies on synchronization through
per cpu data.
The patch set works in a couple of stages:
I. Patch 1 adds the additional raw_cpu operations and raw_cpu_ptr().
Also converts the existing __this_cpu_xx_# primitive in the x86
code to raw_cpu_xx_#.
II. Patch 2-4 use the raw_cpu operations in places that would give
us false positives once they are enabled.
III. Patch 5 adds preemption checks to __this_cpu operations to allow
checking if preemption is properly disabled when these functions
are used.
IV. Patches 6-20 are patches that simply replace uses of __get_cpu_var
with this_cpu_ptr. They do not depend on any changes to the percpu
code. No preemption tests are skipped if they are applied.
V. Patches 21-46 are conversion patches that use this_cpu operations
in various kernel subsystems/drivers or arch code.
VI. Patches 47/48 (not included in this series) remove no longer used
functions (__this_cpu_ptr and __get_cpu_var). These should only be
applied after all the conversion patches have made it and after we
have done additional passes through the kernel to ensure that none of
the uses of these functions remain.
This patch (of 46):
The patches following this one will add preemption checks to __this_cpu
ops so we need to have an alternative way to use this_cpu operations
without preemption checks.
raw_cpu_ops will be the basis for all other ops since these will be the
operations that do not implement any checks.
Primitive operations are renamed by this patch from __this_cpu_xxx to
raw_cpu_xxxx.
Also change the uses of the x86 percpu primitives in preempt.h.
These depend directly on asm/percpu.h (header #include nesting issue).
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Christoph Lameter <cl@linux.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Alex Shi <alex.shi@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Bryan Wu <cooloney@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: David Daney <david.daney@cavium.com>
Cc: David Miller <davem@davemloft.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: H. Peter Anvin <hpa@linux.intel.com>
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Cc: Hedi Berriche <hedi@sgi.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Mike Travis <travis@sgi.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Robert Richter <rric@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
|
Vladimir Davydov
|
9a41707bd3 |
slub: rework sysfs layout for memcg caches
Currently, we try to arrange sysfs entries for memcg caches in the same manner as for global caches. Apart from turning /sys/kernel/slab into a mess when there are a lot of kmem-active memcgs created, it actually does not work properly - we won't create more than one link to a memcg cache in case its parent is merged with another cache. For instance, if A is a root cache merged with another root cache B, we will have the following sysfs setup: X A -> X B -> X where X is some unique id (see create_unique_id()). Now if memcgs M and N start to allocate from cache A (or B, which is the same), we will get: X X:M X:N A -> X B -> X A:M -> X:M A:N -> X:N Since B is an alias for A, we won't get entries B:M and B:N, which is confusing. It is more logical to have entries for memcg caches under the corresponding root cache's sysfs directory. This would allow us to keep sysfs layout clean, and avoid such inconsistencies like one described above. This patch does the trick. It creates a "cgroup" kset in each root cache kobject to keep its children caches there. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Glauber Costa <glommer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Vladimir Davydov
|
b8529907ba |
memcg, slab: do not destroy children caches if parent has aliases
Currently we destroy children caches at the very beginning of kmem_cache_destroy(). This is wrong, because the root cache will not necessarily be destroyed in the end - if it has aliases (refcount > 0), kmem_cache_destroy() will simply decrement its refcount and return. In this case, at best we will get a bunch of warnings in dmesg, like this one: kmem_cache_destroy kmalloc-32:0: Slab cache still has objects CPU: 1 PID: 7139 Comm: modprobe Tainted: G B W 3.13.0+ #117 Call Trace: dump_stack+0x49/0x5b kmem_cache_destroy+0xdf/0xf0 kmem_cache_destroy_memcg_children+0x97/0xc0 kmem_cache_destroy+0xf/0xf0 xfs_mru_cache_uninit+0x21/0x30 [xfs] exit_xfs_fs+0x2e/0xc44 [xfs] SyS_delete_module+0x198/0x1f0 system_call_fastpath+0x16/0x1b At worst - if kmem_cache_destroy() will race with an allocation from a memcg cache - the kernel will panic. This patch fixes this by moving children caches destruction after the check if the cache has aliases. Plus, it forbids destroying a root cache if it still has children caches, because each children cache keeps a reference to its parent. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Glauber Costa <glommer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Vladimir Davydov
|
794b1248be |
memcg, slab: separate memcg vs root cache creation paths
Memcg-awareness turned kmem_cache_create() into a dirty interweaving of memcg-only and except-for-memcg calls. To clean this up, let's move the code responsible for memcg cache creation to a separate function. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Glauber Costa <glommer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Vladimir Davydov
|
5722d094ad |
memcg, slab: cleanup memcg cache creation
This patch cleans up the memcg cache creation path as follows: - Move memcg cache name creation to a separate function to be called from kmem_cache_create_memcg(). This allows us to get rid of the mutex protecting the temporary buffer used for the name formatting, because the whole cache creation path is protected by the slab_mutex. - Get rid of memcg_create_kmem_cache(). This function serves as a proxy to kmem_cache_create_memcg(). After separating the cache name creation path, it would be reduced to a function call, so let's inline it. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Glauber Costa <glommer@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Uwe Kleine-König
|
ce816fa88c |
Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP
If the renamed symbol is defined lib/iomap.c implements ioport_map and ioport_unmap and currently (nearly) all platforms define the port accessor functions outb/inb and friend unconditionally. So HAS_IOPORT_MAP is the better name for this. Consequently NO_IOPORT is renamed to NO_IOPORT_MAP. The motivation for this change is to reintroduce a symbol HAS_IOPORT that signals if outb/int et al are available. I will address that at least one merge window later though to keep surprises to a minimum and catch new introductions of (HAS|NO)_IOPORT. The changes in this commit were done using: $ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/' Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Josh Triplett
|
a4b5d580e0 |
bug: Make BUG() always stop the machine
When !CONFIG_BUG and !HAVE_ARCH_BUG, define the generic BUG() as an infinite loop rather than a no-op. This avoids undefined behavior if execution ever actually reaches BUG(), and avoids warnings about code after BUG() (such as on non-void functions calling BUG() and then not returning). bloat-o-meter results: add/remove: 0/0 grow/shrink: 43/10 up/down: 235/-98 (137) function old new delta umount_collect 119 138 +19 notify_change 306 324 +18 xstate_enable_boot_cpu 252 269 +17 kunmap 54 70 +16 balloon_page_dequeue 112 126 +14 mm_take_all_locks 223 233 +10 list_lru_walk_node 143 152 +9 vma_adjust 1059 1067 +8 pcpu_setup_first_chunk 1130 1138 +8 mm_drop_all_locks 143 151 +8 ns_capable 55 62 +7 anon_transport_class_unregister 8 15 +7 srcu_init_notifier_head 35 41 +6 shrink_dcache_for_umount 174 180 +6 kunmap_high 99 105 +6 end_page_writeback 43 49 +6 do_exit 1339 1345 +6 __kfifo_dma_out_prepare_r 86 92 +6 __kfifo_dma_in_prepare_r 90 96 +6 fixup_user_fault 120 125 +5 repair_env_string 73 77 +4 read_cache_pages_invalidate_page 56 60 +4 isolate_lru_pages.isra 142 146 +4 do_notify_parent_cldstop 255 259 +4 cpu_init 370 374 +4 utimes_common 270 272 +2 tasklet_hi_action 91 93 +2 tasklet_action 91 93 +2 set_pte_vaddr 46 48 +2 find_get_pages_tag 202 204 +2 early_iounmap 185 187 +2 __native_set_fixmap 36 38 +2 __get_user_pages 822 824 +2 __early_ioremap 299 301 +2 yield_task_stop 1 2 +1 tick_resume 37 38 +1 switched_to_stop 1 2 +1 switched_to_idle 1 2 +1 prio_changed_stop 1 2 +1 prio_changed_idle 1 2 +1 pm_qos_power_read 111 112 +1 arch_cpu_idle_dead 1 2 +1 __insert_vmap_area 140 141 +1 sys_renameat 614 612 -2 mm_fault_error 297 295 -2 SyS_renameat 614 612 -2 sys_linkat 416 413 -3 SyS_linkat 416 413 -3 chmod_common 129 122 -7 proc_cap_handler 240 225 -15 __schedule 849 831 -18 sys_madvise 1077 1054 -23 SyS_madvise 1077 1054 -23 Signed-off-by: Josh Triplett <josh@joshtriplett.org> Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Josh Triplett
|
4e50ebde32 |
bug: when !CONFIG_BUG, make WARN call no_printk to check format and args
The stub version of WARN for !CONFIG_BUG completely ignored its format string and subsequent arguments; make it check them instead, using no_printk. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Reported-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Josh Triplett
|
a3f7607d09 |
include/asm-generic/bug.h: style fix: s/while(0)/while (0)/
Signed-off-by: Josh Triplett <josh@joshtriplett.org> Reported-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Josh Triplett
|
b607e70ec6 |
bug: when !CONFIG_BUG, simplify WARN_ON_ONCE and family
When !CONFIG_BUG, WARN_ON and family become simple passthroughs of their condition argument; however, WARN_ON_ONCE and family still have conditions and a boolean to detect one-time invocation, even though the warning they'd emit doesn't exist. Make the existing definitions conditional on CONFIG_BUG, and add definitions for !CONFIG_BUG that map to the passthrough versions of WARN and WARN_ON. This saves 4.4k on a minimized configuration (smaller than allnoconfig), and 20.6k with defconfig plus CONFIG_BUG=n. Signed-off-by: Josh Triplett <josh@joshtriplett.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Alexandre Bounine
|
2aaf308b95 |
rapidio: rework device hierarchy and introduce mport class of devices
This patch removes an artificial RapidIO bus root device and establishes actual device hierarchy by providing reference to real parent devices. It also introduces device class for RapidIO controller devices (on-chip or an eternal bridge, known as "mport"). Existing implementation was sufficient for SoC-based platforms that have a single RapidIO controller. With introduction of devices using multiple RapidIO controllers and PCIe-to-RapidIO bridges the old scheme is very limiting or does not work at all. The implemented changes allow to properly reference platform's local RapidIO mport devices and provide device details needed for upper layers. This change to RapidIO device hierarchy does not break any known existing kernel or user space interfaces. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Stef van Os <stef.van.os@prodrive-technologies.com> Cc: Jerry Jacobs <jerry.jacobs@prodrive-technologies.com> Cc: Arno Tiemersma <arno.tiemersma@prodrive-technologies.com> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Stephen Hemminger
|
90ae3ae539 |
idr: remove dead code
Remove no longer used deprecated code, and make local functions static. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Jean Delvare <jdelvare@suse.de> Acked-by: Tejun Heo <tj@kernel.org> Cc: Jeff Layton <jlayton@redhat.com> Cc: Philipp Reisner <philipp.reisner@linbit.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: George Spelvin <linux@horizon.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Rashika Kheria
|
82e0703b6c |
include/linux/crash_dump.h: add vmcore_cleanup() prototype
Eliminate the following warning in proc/vmcore.c: fs/proc/vmcore.c:1088:6: warning: no previous prototype for `vmcore_cleanup' [-Wmissing-prototypes] [akpm@linux-foundation.org: clean up powerpc, remove unneeded EXPORT_SYMBOL] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Oleg Nesterov
|
ad86622b47 |
wait: swap EXIT_ZOMBIE and EXIT_DEAD to hide EXIT_TRACE from user-space
get_task_state() uses the most significant bit to report the state to user-space, this means that EXIT_ZOMBIE->EXIT_TRACE->EXIT_DEAD transition can be noticed via /proc as Z -> X -> Z change. Note that this was possible even before EXIT_TRACE was introduced. This is not really bad but imho it make sense to hide EXIT_TRACE from user-space completely. So the patch simply swaps EXIT_ZOMBIE and EXIT_DEAD, this way EXIT_TRACE will be seen as EXIT_ZOMBIE by user-space. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: Jan Kratochvil <jan.kratochvil@redhat.com> Cc: Michal Schmidt <mschmidt@redhat.com> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Lennart Poettering <lpoetter@redhat.com> Cc: Roland McGrath <roland@hack.frob.com> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Oleg Nesterov
|
abd50b39e7 |
wait: introduce EXIT_TRACE to avoid the racy EXIT_DEAD->EXIT_ZOMBIE transition
wait_task_zombie() first does EXIT_ZOMBIE->EXIT_DEAD transition and
drops tasklist_lock. If this task is not the natural child and it is
traced, we change its state back to EXIT_ZOMBIE for ->real_parent.
The last transition is racy, this is even documented in
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Oleg Nesterov
|
23aebe1691 |
exec: kill bprm->tcomm[], simplify the "basename" logic
Starting from commit |
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Srikar Dronamraju
|
834a964a09 |
numa: use LAST_CPUPID_SHIFT to calculate LAST_CPUPID_MASK
LAST_CPUPID_MASK is calculated using LAST_CPUPID_WIDTH. However
LAST_CPUPID_WIDTH itself can be 0. (when LAST_CPUPID_NOT_IN_PAGE_FLAGS is
set). In such a case LAST_CPUPID_MASK turns out to be 0.
But with recent commit 1ae71d0319: (mm: numa: bugfix for
LAST_CPUPID_NOT_IN_PAGE_FLAGS) if LAST_CPUPID_MASK is 0,
page_cpupid_xchg_last() and page_cpupid_reset_last() causes
page->_last_cpupid to be set to 0.
This causes performance regression. Its almost as if numa_balancing is
off.
Fix LAST_CPUPID_MASK by using LAST_CPUPID_SHIFT instead of
LAST_CPUPID_WIDTH.
Some performance numbers and perf stats with and without the fix.
(3.14-rc6)
----------
numa01
Performance counter stats for '/usr/bin/time -f %e %S %U %c %w -o start_bench.out -a ./numa01':
12,27,462 cs [100.00%]
2,41,957 migrations [100.00%]
1,68,01,713 faults [100.00%]
7,99,35,29,041 cache-misses
98,808 migrate:mm_migrate_pages [100.00%]
1407.690148814 seconds time elapsed
numa02
Performance counter stats for '/usr/bin/time -f %e %S %U %c %w -o start_bench.out -a ./numa02':
63,065 cs [100.00%]
14,364 migrations [100.00%]
2,08,118 faults [100.00%]
25,32,59,404 cache-misses
12 migrate:mm_migrate_pages [100.00%]
63.840827219 seconds time elapsed
(3.14-rc6 with fix)
-------------------
numa01
Performance counter stats for '/usr/bin/time -f %e %S %U %c %w -o start_bench.out -a ./numa01':
9,68,911 cs [100.00%]
1,01,414 migrations [100.00%]
88,38,697 faults [100.00%]
4,42,92,51,042 cache-misses
4,25,060 migrate:mm_migrate_pages [100.00%]
685.965331189 seconds time elapsed
numa02
Performance counter stats for '/usr/bin/time -f %e %S %U %c %w -o start_bench.out -a ./numa02':
17,543 cs [100.00%]
2,962 migrations [100.00%]
1,17,843 faults [100.00%]
11,80,61,644 cache-misses
12,358 migrate:mm_migrate_pages [100.00%]
20.380132343 seconds time elapsed
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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Zhang Yanfei
|
85892f196f |
madvise: correct the comment of MADV_DODUMP flag
s/MADV_NODUMP/MADV_DONTDUMP/ Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Fabian Frederick
|
29f175d125 |
mm/readahead.c: inline ra_submit
Commit
|
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|
Miklos Szeredi
|
ed6d7c8e57 |
mm: remove unused arg of set_page_dirty_balance()
There's only one caller of set_page_dirty_balance() and that will call it
with page_mkwrite == 0.
The page_mkwrite argument was unused since commit
|
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Michal Hocko
|
d715ae08f2 |
memcg: rename high level charging functions
mem_cgroup_newpage_charge is used only for charging anonymous memory so it is better to rename it to mem_cgroup_charge_anon. mem_cgroup_cache_charge is used for file backed memory so rename it to mem_cgroup_charge_file. Signed-off-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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Johannes Weiner
|
df38197546 |
memcg: get_mem_cgroup_from_mm()
Instead of returning NULL from try_get_mem_cgroup_from_mm() when the mm owner is exiting, just return root_mem_cgroup. This makes sense for all callsites and gets rid of some of them having to fallback manually. [fengguang.wu@intel.com: fix warnings] Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Acked-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Kirill A. Shutemov
|
d230dec18d |
mm: use 'const char *' insted of 'char *' for reason in dump_page()
I tried to use 'dump_page(page, __func__)' for debugging, but it triggers warning: warning: passing argument 2 of `dump_page' discards `const' qualifier from pointer target type [enabled by default] Let's convert 'reason' to 'const char *' in dump_page() and friends: we shouldn't modify it anyway. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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David Rientjes
|
539a13b47e |
res_counter: remove interface for locked charging and uncharging
The res_counter_{charge,uncharge}_locked() variants are not used in the
kernel outside of the resource counter code itself, so remove the
interface.
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Jianguo Wu <wujianguo@huawei.com>
Cc: Tim Hockin <thockin@google.com>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
||
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David Rientjes
|
f0432d1596 |
mm, mempolicy: remove per-process flag
PF_MEMPOLICY is an unnecessary optimization for CONFIG_SLAB users. There's no significant performance degradation to checking current->mempolicy rather than current->flags & PF_MEMPOLICY in the allocation path, especially since this is considered unlikely(). Running TCP_RR with netperf-2.4.5 through localhost on 16 cpu machine with 64GB of memory and without a mempolicy: threads before after 16 1249409 1244487 32 1281786 1246783 48 1239175 1239138 64 1244642 1241841 80 1244346 1248918 96 1266436 1254316 112 1307398 1312135 128 1327607 1326502 Per-process flags are a scarce resource so we should free them up whenever possible and make them available. We'll be using it shortly for memcg oom reserves. Signed-off-by: David Rientjes <rientjes@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Tim Hockin <thockin@google.com> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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David Rientjes
|
2a389610a7 |
mm, mempolicy: rename slab_node for clarity
slab_node() is actually a mempolicy function, so rename it to mempolicy_slab_node() to make it clearer that it used for processes with mempolicies. At the same time, cleanup its code by saving numa_mem_id() in a local variable (since we require a node with memory, not just any node) and remove an obsolete comment that assumes the mempolicy is actually passed into the function. Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Christoph Lameter <cl@linux.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: Tejun Heo <tj@kernel.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Tim Hockin <thockin@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Davidlohr Bueso
|
615d6e8756 |
mm: per-thread vma caching
This patch is a continuation of efforts trying to optimize find_vma(), avoiding potentially expensive rbtree walks to locate a vma upon faults. The original approach (https://lkml.org/lkml/2013/11/1/410), where the largest vma was also cached, ended up being too specific and random, thus further comparison with other approaches were needed. There are two things to consider when dealing with this, the cache hit rate and the latency of find_vma(). Improving the hit-rate does not necessarily translate in finding the vma any faster, as the overhead of any fancy caching schemes can be too high to consider. We currently cache the last used vma for the whole address space, which provides a nice optimization, reducing the total cycles in find_vma() by up to 250%, for workloads with good locality. On the other hand, this simple scheme is pretty much useless for workloads with poor locality. Analyzing ebizzy runs shows that, no matter how many threads are running, the mmap_cache hit rate is less than 2%, and in many situations below 1%. The proposed approach is to replace this scheme with a small per-thread cache, maximizing hit rates at a very low maintenance cost. Invalidations are performed by simply bumping up a 32-bit sequence number. The only expensive operation is in the rare case of a seq number overflow, where all caches that share the same address space are flushed. Upon a miss, the proposed replacement policy is based on the page number that contains the virtual address in question. Concretely, the following results are seen on an 80 core, 8 socket x86-64 box: 1) System bootup: Most programs are single threaded, so the per-thread scheme does improve ~50% hit rate by just adding a few more slots to the cache. +----------------+----------+------------------+ | caching scheme | hit-rate | cycles (billion) | +----------------+----------+------------------+ | baseline | 50.61% | 19.90 | | patched | 73.45% | 13.58 | +----------------+----------+------------------+ 2) Kernel build: This one is already pretty good with the current approach as we're dealing with good locality. +----------------+----------+------------------+ | caching scheme | hit-rate | cycles (billion) | +----------------+----------+------------------+ | baseline | 75.28% | 11.03 | | patched | 88.09% | 9.31 | +----------------+----------+------------------+ 3) Oracle 11g Data Mining (4k pages): Similar to the kernel build workload. +----------------+----------+------------------+ | caching scheme | hit-rate | cycles (billion) | +----------------+----------+------------------+ | baseline | 70.66% | 17.14 | | patched | 91.15% | 12.57 | +----------------+----------+------------------+ 4) Ebizzy: There's a fair amount of variation from run to run, but this approach always shows nearly perfect hit rates, while baseline is just about non-existent. The amounts of cycles can fluctuate between anywhere from ~60 to ~116 for the baseline scheme, but this approach reduces it considerably. For instance, with 80 threads: +----------------+----------+------------------+ | caching scheme | hit-rate | cycles (billion) | +----------------+----------+------------------+ | baseline | 1.06% | 91.54 | | patched | 99.97% | 14.18 | +----------------+----------+------------------+ [akpm@linux-foundation.org: fix nommu build, per Davidlohr] [akpm@linux-foundation.org: document vmacache_valid() logic] [akpm@linux-foundation.org: attempt to untangle header files] [akpm@linux-foundation.org: add vmacache_find() BUG_ON] [hughd@google.com: add vmacache_valid_mm() (from Oleg)] [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: adjust and enhance comments] Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Reviewed-by: Rik van Riel <riel@redhat.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Michel Lespinasse <walken@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Tested-by: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
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Kirill A. Shutemov
|
f1820361f8 |
mm: implement ->map_pages for page cache
filemap_map_pages() is generic implementation of ->map_pages() for filesystems who uses page cache. It should be safe to use filemap_map_pages() for ->map_pages() if filesystem use filemap_fault() for ->fault(). Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Ning Qu <quning@gmail.com> Cc: Hugh Dickins <hughd@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Kirill A. Shutemov
|
8c6e50b029 |
mm: introduce vm_ops->map_pages()
Here's new version of faultaround patchset. It took a while to tune it and collect performance data. First patch adds new callback ->map_pages to vm_operations_struct. ->map_pages() is called when VM asks to map easy accessible pages. Filesystem should find and map pages associated with offsets from "pgoff" till "max_pgoff". ->map_pages() is called with page table locked and must not block. If it's not possible to reach a page without blocking, filesystem should skip it. Filesystem should use do_set_pte() to setup page table entry. Pointer to entry associated with offset "pgoff" is passed in "pte" field in vm_fault structure. Pointers to entries for other offsets should be calculated relative to "pte". Currently VM use ->map_pages only on read page fault path. We try to map FAULT_AROUND_PAGES a time. FAULT_AROUND_PAGES is 16 for now. Performance data for different FAULT_AROUND_ORDER is below. TODO: - implement ->map_pages() for shmem/tmpfs; - modify get_user_pages() to be able to use ->map_pages() and implement mmap(MAP_POPULATE|MAP_NONBLOCK) on top. ========================================================================= Tested on 4-socket machine (120 threads) with 128GiB of RAM. Few real-world workloads. The sweet spot for FAULT_AROUND_ORDER here is somewhere between 3 and 5. Let's say 4 :) Linux build (make -j60) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 283,301,572 247,151,987 212,215,789 204,772,882 199,568,944 194,703,779 193,381,485 time, seconds 151.227629483 153.920996480 151.356125472 150.863792049 150.879207877 151.150764954 151.450962358 Linux rebuild (make -j60) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 5,396,854 4,148,444 2,855,286 2,577,282 2,361,957 2,169,573 2,112,643 time, seconds 27.404543757 27.559725591 27.030057426 26.855045126 26.678618635 26.974523490 26.761320095 Git test suite (make -j60 test) FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 minor-faults 129,591,823 99,200,751 66,106,718 57,606,410 51,510,808 45,776,813 44,085,515 time, seconds 66.087215026 64.784546905 64.401156567 65.282708668 66.034016829 66.793780811 67.237810413 Two synthetic tests: access every word in file in sequential/random order. It doesn't improve much after FAULT_AROUND_ORDER == 4. Sequential access 16GiB file FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 1 thread minor-faults 4,195,437 2,098,275 525,068 262,251 131,170 32,856 8,282 time, seconds 7.250461742 6.461711074 5.493859139 5.488488147 5.707213983 5.898510832 5.109232856 8 threads minor-faults 33,557,540 16,892,728 4,515,848 2,366,999 1,423,382 442,732 142,339 time, seconds 16.649304881 9.312555263 6.612490639 6.394316732 6.669827501 6.75078944 6.371900528 32 threads minor-faults 134,228,222 67,526,810 17,725,386 9,716,537 4,763,731 1,668,921 537,200 time, seconds 49.164430543 29.712060103 12.938649729 10.175151004 11.840094583 9.594081325 9.928461797 60 threads minor-faults 251,687,988 126,146,952 32,919,406 18,208,804 10,458,947 2,733,907 928,217 time, seconds 86.260656897 49.626551828 22.335007632 17.608243696 16.523119035 16.339489186 16.326390902 120 threads minor-faults 503,352,863 252,939,677 67,039,168 35,191,827 19,170,091 4,688,357 1,471,862 time, seconds 124.589206333 79.757867787 39.508707872 32.167281632 29.972989292 28.729834575 28.042251622 Random access 1GiB file 1 thread minor-faults 262,636 132,743 34,369 17,299 8,527 3,451 1,222 time, seconds 15.351890914 16.613802482 16.569227308 15.179220992 16.557356122 16.578247824 15.365266994 8 threads minor-faults 2,098,948 1,061,871 273,690 154,501 87,110 25,663 7,384 time, seconds 15.040026343 15.096933500 14.474757288 14.289129964 14.411537468 14.296316837 14.395635804 32 threads minor-faults 8,390,734 4,231,023 1,054,432 528,847 269,242 97,746 26,881 time, seconds 20.430433109 21.585235358 22.115062928 14.872878951 14.880856305 14.883370649 14.821261690 60 threads minor-faults 15,733,258 7,892,809 1,973,393 988,266 594,789 164,994 51,691 time, seconds 26.577302548 25.692397770 18.728863715 20.153026398 21.619101933 17.745086260 17.613215273 120 threads minor-faults 31,471,111 15,816,616 3,959,209 1,978,685 1,008,299 264,635 96,010 time, seconds 41.835322703 40.459786095 36.085306105 35.313894834 35.814445675 36.552633793 34.289210594 Touch only one page in page table in 16GiB file FAULT_AROUND_ORDER Baseline 1 3 4 5 7 9 1 thread minor-faults 8,372 8,324 8,270 8,260 8,249 8,239 8,237 time, seconds 0.039892712 0.045369149 0.051846126 0.063681685 0.079095975 0.17652406 0.541213386 8 threads minor-faults 65,731 65,681 65,628 65,620 65,608 65,599 65,596 time, seconds 0.124159196 0.488600638 0.156854426 0.191901957 0.242631486 0.543569456 1.677303984 32 threads minor-faults 262,388 262,341 262,285 262,276 262,266 262,257 263,183 time, seconds 0.452421421 0.488600638 0.565020946 0.648229739 0.789850823 1.651584361 5.000361559 60 threads minor-faults 491,822 491,792 491,723 491,711 491,701 491,691 491,825 time, seconds 0.763288616 0.869620515 0.980727360 1.161732354 1.466915814 3.04041448 9.308612938 120 threads minor-faults 983,466 983,655 983,366 983,372 983,363 984,083 984,164 time, seconds 1.595846553 1.667902182 2.008959376 2.425380942 2.941368804 5.977807890 18.401846125 This patch (of 2): Introduce new vm_ops callback ->map_pages() and uses it for mapping easy accessible pages around fault address. On read page fault, if filesystem provides ->map_pages(), we try to map up to FAULT_AROUND_PAGES pages around page fault address in hope to reduce number of minor page faults. We call ->map_pages first and use ->fault() as fallback if page by the offset is not ready to be mapped (cold page cache or something). Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Ning Qu <quning@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Alex Thorlton
|
a0715cc226 |
mm, thp: add VM_INIT_DEF_MASK and PRCTL_THP_DISABLE
Add VM_INIT_DEF_MASK, to allow us to set the default flags for VMs. It also adds a prctl control which allows us to set the THP disable bit in mm->def_flags so that VMs will pick up the setting as they are created. Signed-off-by: Alex Thorlton <athorlton@sgi.com> Suggested-by: Oleg Nesterov <oleg@redhat.com> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Mel Gorman <mgorman@suse.de> Acked-by: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: David Rientjes <rientjes@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
467a9e1633 |
CPU hotplug notifiers registration fixes for 3.15-rc1
The purpose of this single series of commits from Srivatsa S Bhat (with a small piece from Gautham R Shenoy) touching multiple subsystems that use CPU hotplug notifiers is to provide a way to register them that will not lead to deadlocks with CPU online/offline operations as described in the changelog of commit |
||
|
Arnd Bergmann
|
b8780c363d |
sched: remove sleep_on() and friends
This is the final piece in the puzzle, as all patches to remove the last users of \(interruptible_\|\)sleep_on\(_timeout\|\) have made it into the 3.15 merge window. The work was long overdue, and this interface in particular should not have survived the BKL removal that was done a couple of years ago. Citing Jon Corbet from http://lwn.net/2001/0201/kernel.php3": "[...] it was suggested that the janitors look for and fix all code that calls sleep_on() [...] since (1) almost all such code is incorrect, and (2) Linus has agreed that those functions should be removed in the 2.5 development series". We haven't quite made it for 2.5, but maybe we can merge this for 3.15. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
||
|
Linus Torvalds
|
240cd6a817 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph updates from Sage Weil:
"The biggest chunk is a series of patches from Ilya that add support
for new Ceph osd and crush map features, including some new tunables,
primary affinity, and the new encoding that is needed for erasure
coding support. This brings things into parity with the server side
and the looming firefly release. There is also support for allocation
hints in RBD that help limit fragmentation on the server side.
There is also a series of patches from Zheng fixing NFS reexport,
directory fragmentation support, flock vs fnctl behavior, and some
issues with clustered MDS.
Finally, there are some miscellaneous fixes from Yunchuan Wen for
fscache, Fabian Frederick for ACLs, and from me for fsync(dirfd)
behavior"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (79 commits)
ceph: skip invalid dentry during dcache readdir
libceph: dump pool {read,write}_tier to debugfs
libceph: output primary affinity values on osdmap updates
ceph: flush cap release queue when trimming session caps
ceph: don't grabs open file reference for aborted request
ceph: drop extra open file reference in ceph_atomic_open()
ceph: preallocate buffer for readdir reply
libceph: enable PRIMARY_AFFINITY feature bit
libceph: redo ceph_calc_pg_primary() in terms of ceph_calc_pg_acting()
libceph: add support for osd primary affinity
libceph: add support for primary_temp mappings
libceph: return primary from ceph_calc_pg_acting()
libceph: switch ceph_calc_pg_acting() to new helpers
libceph: introduce apply_temps() helper
libceph: introduce pg_to_raw_osds() and raw_to_up_osds() helpers
libceph: ceph_can_shift_osds(pool) and pool type defines
libceph: ceph_osd_{exists,is_up,is_down}(osd) definitions
libceph: enable OSDMAP_ENC feature bit
libceph: primary_affinity decode bits
libceph: primary_affinity infrastructure
...
|
||
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Linus Torvalds
|
3021112598 |
f2fs updates for v3.15
This patch-set includes the following major enhancement patches.
o introduce large directory support
o introduce f2fs_issue_flush to merge redundant flush commands
o merge write IOs as much as possible aligned to the segment
o add sysfs entries to tune the f2fs configuration
o use radix_tree for the free_nid_list to reduce in-memory operations
o remove costly bit operations in f2fs_find_entry
o enhance the readahead flow for CP/NAT/SIT/SSA blocks
The other bug fixes are as follows.
o recover xattr node blocks correctly after sudden-power-cut
o fix to calculate the maximum number of node ids
o enhance to handle many error cases
And, there are a bunch of cleanups.
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Merge tag 'for-f2fs-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs updates from Jaegeuk Kim:
"This patch-set includes the following major enhancement patches.
- introduce large directory support
- introduce f2fs_issue_flush to merge redundant flush commands
- merge write IOs as much as possible aligned to the segment
- add sysfs entries to tune the f2fs configuration
- use radix_tree for the free_nid_list to reduce in-memory operations
- remove costly bit operations in f2fs_find_entry
- enhance the readahead flow for CP/NAT/SIT/SSA blocks
The other bug fixes are as follows:
- recover xattr node blocks correctly after sudden-power-cut
- fix to calculate the maximum number of node ids
- enhance to handle many error cases
And, there are a bunch of cleanups"
* tag 'for-f2fs-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (62 commits)
f2fs: fix wrong statistics of inline data
f2fs: check the acl's validity before setting
f2fs: introduce f2fs_issue_flush to avoid redundant flush issue
f2fs: fix to cover io->bio with io_rwsem
f2fs: fix error path when fail to read inline data
f2fs: use list_for_each_entry{_safe} for simplyfying code
f2fs: avoid free slab cache under spinlock
f2fs: avoid unneeded lookup when xattr name length is too long
f2fs: avoid unnecessary bio submit when wait page writeback
f2fs: return -EIO when node id is not matched
f2fs: avoid RECLAIM_FS-ON-W warning
f2fs: skip unnecessary node writes during fsync
f2fs: introduce fi->i_sem to protect fi's info
f2fs: change reclaim rate in percentage
f2fs: add missing documentation for dir_level
f2fs: remove unnecessary threshold
f2fs: throttle the memory footprint with a sysfs entry
f2fs: avoid to drop nat entries due to the negative nr_shrink
f2fs: call f2fs_wait_on_page_writeback instead of native function
f2fs: introduce nr_pages_to_write for segment alignment
...
|
||
|
Linus Torvalds
|
0af9fb6391 |
fbdev changes for 3.15 (OMAP)
This contains OMAP related fbdev changes for 3.15. The bulk of the patches are
for adding Device Tree support for OMAP Display Subsystem:
* SoCs: OMAP2/3/4
* Boards: OMAP4 Panda, OMAP4 SDP, OMAP3 Beagle, OMAP3 Beagle-xM, OMAP3
IGEP0020, OMAP3 N900
* Devices: TFP410 Encoder, tpd12s015 HDMI companion chip, Sony acx565akm panel,
MIPI DSI Command mode panel and HDMI, DVI and Analog TV connectors
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Merge tag 'fbdev-omap-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull OMAP fbdev changes from Tomi Valkeinen:
"This is based on the already pulled fbdev-main changes, and this also
merges .dts branch from Tony Lindgren (which has also been pulled), so
that I was able to add the display related .dts changes.
This contains OMAP related fbdev changes for 3.15. The bulk of the
patches are for adding Device Tree support for OMAP Display Subsystem:
- SoCs: OMAP2/3/4
- Boards: OMAP4 Panda, OMAP4 SDP, OMAP3 Beagle, OMAP3 Beagle-xM,
OMAP3 IGEP0020, OMAP3 N900
- Devices: TFP410 Encoder, tpd12s015 HDMI companion chip, Sony
acx565akm panel, MIPI DSI Command mode panel and HDMI, DVI and
Analog TV connectors"
* tag 'fbdev-omap-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (45 commits)
OMAPDSS: HDMI: fix interlace output
OMAPDSS: add missing __init for dss_init_ports
ARM: OMAP2+: remove pdata quirks for displays
OMAPDSS: remove DT hacks for regulators
Doc/DT: Add DT binding documentation for tpd12s015 encoder
Doc/DT: Add DT binding documentation for TFP410 encoder
Doc/DT: Add DT binding documentation for Sony acx565akm panel
Doc/DT: Add DT binding documentation for MIPI DSI CM Panel
Doc/DT: Add DT binding documentation for HDMI Connector
Doc/DT: Add DT binding documentation for DVI Connector
Doc/DT: Add DT binding documentation for Analog TV Connector
ARM: omap3-n900.dts: add display information
ARM: omap3-igep0020.dts: add display information
ARM: omap3-beagle-xm.dts: add display information
ARM: omap3-beagle.dts: add display information
ARM: omap4-sdp.dts: add display information
Doc/DT: Add DT binding documentation for OMAP DSS
OMAPDSS: acx565akm: Add DT support
OMAPDSS: connector-analog-tv: Add DT support
OMAPDSS: hdmi-connector: Add DT support
...
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||
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Linus Torvalds
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e5744abb2f |
== Changes to existing drivers ==
- Use of managed resources - omap, twl4030, ti_am335x_tscadc
- Advanced error handling - omap
- Rework clk management - omap
- Device Tree (re-)work - tc3589x, pm8921, da9055, sec
- IRC management overhaul and !BROKEN - pm8921
- Convert to regmap - ssbi, pm8921
- Use simple power-management ops - ucb1x00
- Include file clean-up - adp5520, cs5535, janz, lpc_ich,
- lpc_sch, max14577, mcp-sa11x0, pcf50633-adc, rc5t583,
rdc321x-southbridge, retu, smsc-ece1099, ti-ssp, ti_am335x_tscadc,
tps65912, vexpress-config, wm8350, ywm8350
- Various bug fixes across the subsystem
- NULL/invalid pointer dereference prevention
- Resource leak mitigation,
- Variable used initialised
- Staticise various containers
- Enforce return value checks
== New drivers/supported devices ==
- Add support for s2mps14 and s2mpa01 to sec
- Add support for da9063 (v5) to da9063
- Add support for atom-c2000 to gpio-ich
- Add support for come-{mbt10,cbt6,chl6} to kempld
- Add support for da9053 to da9052
- Add support for itco-wdt (v3) and baytrail to lpc_ich
- Add new drivers for tps65218, rtsx_usb, bcm590xx
== (Re-)moved drivers ==
- twl4030 ==> drivers/iio
- ti-ssp ==> /dev/null
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Merge tag 'mfd-for-linus-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Changes to existing drivers:
- Use of managed resources - omap, twl4030, ti_am335x_tscadc
- Advanced error handling - omap
- Rework clk management - omap
- Device Tree (re-)work - tc3589x, pm8921, da9055, sec
- IRC management overhaul and !BROKEN - pm8921
- Convert to regmap - ssbi, pm8921
- Use simple power-management ops - ucb1x00
- Include file clean-up - adp5520, cs5535, janz, lpc_ich,
- lpc_sch, max14577, mcp-sa11x0, pcf50633-adc, rc5t583,
rdc321x-southbridge, retu, smsc-ece1099, ti-ssp, ti_am335x_tscadc,
tps65912, vexpress-config, wm8350, ywm8350
- Various bug fixes across the subsystem
- NULL/invalid pointer dereference prevention
- Resource leak mitigation,
- Variable used initialised
- Staticise various containers
- Enforce return value checks
New drivers/supported devices:
- Add support for s2mps14 and s2mpa01 to sec
- Add support for da9063 (v5) to da9063
- Add support for atom-c2000 to gpio-ich
- Add support for come-{mbt10,cbt6,chl6} to kempld
- Add support for da9053 to da9052
- Add support for itco-wdt (v3) and baytrail to lpc_ich
- Add new drivers for tps65218, rtsx_usb, bcm590xx
(Re-)moved drivers:
- twl4030 ==> drivers/iio
- ti-ssp ==> /dev/null"
* tag 'mfd-for-linus-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (103 commits)
mfd: wm5110: Correct default for HEADPHONE_DETECT_1
mfd: arizona: Correct small errors in the DT binding documentation
mfd: arizona: Mark DSP clocking register as volatile
mfd: devicetree: bindings: Add pm8xxx RTC description
mfd: kempld-core: Fix potential hang-up during boot
mfd: sec-core: Fix uninitialized 'regmap_rtc' on S2MPA01
mfd: tps65910: Fix regmap_irq_chip_data leak on mfd_add_devices fail
mfd: tps65910: Fix possible invalid pointer dereference on regmap_add_irq_chip fail
mfd: sec-core: Fix I2C dummy device resource leak on probe failure
mfd: sec-core: Add of_compatible strings for clock MFD cells
mfd: Remove obsolete ti-ssp driver
Documentation: mfd: s2mps11: Describe S5M8767 and S2MPS14 clocks
mfd: bcm590xx: Fix type argument for module device table
mfd: lpc_ich: Add support for Intel Bay Trail SoC
mfd: lpc_ich: Add support for NM10 GPIO
mfd: lpc_ich: Change Avoton to iTCO v3
watchdog: iTCO_wdt: Add support for v3 silicon
mfd: lpc_ich: Add support for iTCO v3
mfd: lpc_ich: Remove lpc_ich_cfg struct use
mfd: lpc_ich: Only configure watchdog or GPIO when present
...
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