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authorJohannes Weiner <hannes@cmpxchg.org>2017-05-04 00:52:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 01:52:08 +0300
commit9a4caf1e9fa4864ce21ba9584a2c336bfbc72740 (patch)
tree6e4ca5d6040d341fa03541e4c7f14279ab620e7f /include/linux/memcontrol.h
parentcf8496ea8020792ea32d0fbec0c140d8de93011a (diff)
downloadlinux-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 'include/linux/memcontrol.h')
-rw-r--r--include/linux/memcontrol.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index bb7250c45cb8..c5ebb32fef49 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -46,6 +46,7 @@ enum mem_cgroup_stat_index {
MEM_CGROUP_STAT_CACHE, /* # of pages charged as cache */
MEM_CGROUP_STAT_RSS, /* # of pages charged as anon rss */
MEM_CGROUP_STAT_RSS_HUGE, /* # of pages charged as anon huge */
+ MEM_CGROUP_STAT_SHMEM, /* # of pages charged as shmem */
MEM_CGROUP_STAT_FILE_MAPPED, /* # of pages charged as file rss */
MEM_CGROUP_STAT_DIRTY, /* # of dirty pages in page cache */
MEM_CGROUP_STAT_WRITEBACK, /* # of pages under writeback */