Changes in sysfs-kernel-slab

ee65728e - docs: rename Documentation/vm to Documentation/mm

Mon, 27 Jun 2022 06:00:26 +0000

docs: rename Documentation/vm to Documentation/mmso it will be consistent with code mm directory and withDocumentation/admin-guide/mm and won't be confused with virtual machines.Signed-off-by: Mike Rapoport Suggested-by: Matthew Wilcox Tested-by: Ira Weiny Acked-by: Jonathan Corbet Acked-by: Wu XiangCheng List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

773151dc - ABI: sysfs-kernel-slab: Document some stats

Mon, 27 Sep 2021 13:59:41 +0000

ABI: sysfs-kernel-slab: Document some statsDocument three slab stats that were added in 2011 and 2017.Fixes: 49e2258586b4 ("slub: per cpu cache for partial pages")Fixes: 8eb8284b4129 ("usercopy: Prepare for usercopy whitelisting")Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/8960435734c5aa918568ce7891171448c4d68709.1632750608.git.mchehab+huawei@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

a19ea9e3 - ABI: sysfs-kernel-slab: use a wildcard for the cache name

Thu, 16 Sep 2021 08:59:30 +0000

ABI: sysfs-kernel-slab: use a wildcard for the cache namethe "cache" part of the description is actually a wildcard,as, in practice, this will use per-subsystem names: /sys/kernel/slab/Acpi-Namespace/align /sys/kernel/slab/Acpi-Operand/align /sys/kernel/slab/Acpi-Parse/align... /sys/kernel/slab/zswap_entry/alignSigned-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/64095cc0a38d0f675ab798d4f04d8631674b59f7.1631782432.git.mchehab+huawei@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

54a19b4d - docs: ABI: cleanup several ABI documents

Fri, 30 Oct 2020 07:40:50 +0000

docs: ABI: cleanup several ABI documentsThere are some ABI documents that, while they don't generateany warnings, they have issues when parsed by get_abi.pl scripton its output result.Address them, in order to provide a clean output.Reviewed-by: Tom Rix # for fpga-managerReviewed-By: Kajol Jain # for sysfs-bus-event_source-devices-hv_gpci and sysfs-bus-event_source-devices-hv_24x7Acked-by: Jonathan Cameron #for IIOAcked-by: Oded Gabbay # for HabanalabsAcked-by: Vaibhav Jain # for sysfs-bus-papr-pmemAcked-by: Cezary Rojewski # for catptAcked-by: Suzuki K Poulose Acked-by: Ilya Dryomov # for rbdAcked-by: Jonathan Corbet Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/5bc78e5b68ed1e9e39135173857cb2e753be868f.1604042072.git.mchehab+huawei@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

04f768a3 - mm, slab: extend slab/shrink to shrink all memcg caches

Mon, 23 Sep 2019 22:33:46 +0000

mm, slab: extend slab/shrink to shrink all memcg cachesCurrently, a value of '1" is written to /sys/kernel/slab//shrinkfile to shrink the slab by flushing out all the per-cpu slabs and freeslabs in partial lists. This can be useful to squeeze out a bit morememory under extreme condition as well as making the active object countsin /proc/slabinfo more accurate.This usually applies only to the root caches, as the SLUB_MEMCG_SYSFS_ONoption is usually not enabled and "slub_memcg_sysfs=1" not set. Even ifmemcg sysfs is turned on, it is too cumbersome and impractical to manageall those per-memcg sysfs files in a real production system.So there is no practical way to shrink memcg caches. Fix this by enablinga proper write to the shrink sysfs file of the root cache to scan all theavailable memcg caches and shrink them as well. For a non-root memcgcache (when SLUB_MEMCG_SYSFS_ON or slub_memcg_sysfs is on), only thatcache will be shrunk when written.On a 2-socket 64-core 256-thread arm64 system with 64k page aftera parallel kernel build, the the amount of memory occupied by slabsbefore shrinking slabs were: # grep task_struct /proc/slabinfo task_struct 53137 53192 4288 61 4 : tunables 0 0 0 : slabdata 872 872 0 # grep "^S[lRU]" /proc/meminfo Slab: 3936832 kB SReclaimable: 399104 kB SUnreclaim: 3537728 kBAfter shrinking slabs (by echoing "1" to all shrink files): # grep "^S[lRU]" /proc/meminfo Slab: 1356288 kB SReclaimable: 263296 kB SUnreclaim: 1092992 kB # grep task_struct /proc/slabinfo task_struct 2764 6832 4288 61 4 : tunables 0 0 0 : slabdata 112 112 0Link: http://lkml.kernel.org/r/20190723151445.7385-1-longman@redhat.comSigned-off-by: Waiman Long Acked-by: Roman Gushchin Acked-by: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Cc: Michal Hocko Cc: Johannes Weiner Cc: Shakeel Butt Cc: Vladimir Davydov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

ad56b738 - docs/vm: rename documentation files to .rst

Wed, 21 Mar 2018 19:22:47 +0000

docs/vm: rename documentation files to .rstSigned-off-by: Mike Rapoport Signed-off-by: Jonathan Corbet List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

8c27ceff - docs: fix locations of several documents that got moved

Tue, 18 Oct 2016 12:12:27 +0000

docs: fix locations of several documents that got movedThe previous patch renamed several files that are cross-referencedalong the Kernel documentation. Adjust the links to point tothe right places.Signed-off-by: Mauro Carvalho Chehab List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

888a214d - slub: document setting min order with debug_guardpage_minorder > 0

Fri, 13 Jan 2012 01:17:39 +0000

slub: document setting min order with debug_guardpage_minorder > 0Acked-by: David Rientjes Cc: Pekka Enberg Cc: "Rafael J. Wysocki" Signed-off-by: Stanislaw Gruszka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

78eb00cc - slub: allow stats to be cleared

Thu, 15 Oct 2009 09:20:22 +0000

slub: allow stats to be clearedWhen collecting slub stats for particular workloads, it's necessary tocollect each statistic for all caches before the job is even startedbecause the counters are usually greater than zero just from boot andinitialization.This allows a statistic to be cleared on each cpu by writing '0' to itssysfs file. This creates a baseline for statistics of interest beforethe workload is started.Setting a statistic to a particular value is not supported, so all valueswritten to these files other than '0' returns -EINVAL.Cc: Christoph Lameter Signed-off-by: David Rientjes Signed-off-by: Pekka Enberg List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab

51e95bed - slub: add Documentation/ABI/testing/sysfs-kernel-slab

Fri, 24 Apr 2009 23:26:25 +0000

slub: add Documentation/ABI/testing/sysfs-kernel-slabAdds documentation for the slub ABI.This is placed in the `testing' directory since the meanings of thesefiles are still subject to change as slub is developed.Acked-by: Christoph Lameter Cc: Randy Dunlap Signed-off-by: David Rientjes Signed-off-by: Pekka Enberg List of files: /linux-6.15/Documentation/ABI/testing/sysfs-kernel-slab