From b070e65c0bb58d90fa1ac693dc85e239a6b16872 Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Tue, 7 May 2013 16:18:09 -0700 Subject: mm, memcg: add rss_huge stat to memory.stat This exports the amount of anonymous transparent hugepages for each memcg via the new "rss_huge" stat in memory.stat. The units are in bytes. This is helpful to determine the hugepage utilization for individual jobs on the system in comparison to rss and opportunities where MADV_HUGEPAGE may be helpful. The amount of anonymous transparent hugepages is also included in "rss" for backwards compatibility. Signed-off-by: David Rientjes Acked-by: Michal Hocko Acked-by: Johannes Weiner Cc: KAMEZAWA Hiroyuki Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/cgroups/memory.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 09027a9fece5..ddf4f93967a9 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -480,7 +480,9 @@ memory.stat file includes following statistics # per-memory cgroup local status cache - # of bytes of page cache memory. -rss - # of bytes of anonymous and swap cache memory. +rss - # of bytes of anonymous and swap cache memory (includes + transparent hugepages). +rss_huge - # of bytes of anonymous transparent hugepages. mapped_file - # of bytes of mapped file (includes tmpfs/shmem) pgpgin - # of charging events to the memory cgroup. The charging event happens each time a page is accounted as either mapped -- cgit v1.2.3