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| author | Johannes Weiner <hannes@cmpxchg.org> | 2017-05-04 00:52:45 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 01:52:08 +0300 |
| commit | 9a4caf1e9fa4864ce21ba9584a2c336bfbc72740 (patch) | |
| tree | 6e4ca5d6040d341fa03541e4c7f14279ab620e7f /Documentation | |
| parent | cf8496ea8020792ea32d0fbec0c140d8de93011a (diff) | |
| download | linux-9a4caf1e9fa4864ce21ba9584a2c336bfbc72740.tar.xz | |
mm: memcontrol: provide shmem statistics
Cgroups currently don't report how much shmem they use, which can be
useful data to have, in particular since shmem is included in the
cache/file item while being reclaimed like anonymous memory.
Add a counter to track shmem pages during charging and uncharging.
Link: http://lkml.kernel.org/r/20170221164343.32252-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Chris Down <cdown@fb.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/cgroup-v2.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/cgroup-v2.txt b/Documentation/cgroup-v2.txt index 49d7c997fa1e..e50b95c25868 100644 --- a/Documentation/cgroup-v2.txt +++ b/Documentation/cgroup-v2.txt @@ -871,6 +871,11 @@ PAGE_SIZE multiple when read back. Amount of memory used in network transmission buffers + shmem + + Amount of cached filesystem data that is swap-backed, + such as tmpfs, shm segments, shared anonymous mmap()s + file_mapped Amount of cached filesystem data mapped with mmap() |