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authorJohannes Weiner <hannes@cmpxchg.org>2020-12-14 19:06:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 12:13:39 -0800
commitb8eddff8886b173b0a0f21a3bb1a594cc6d974d1 (patch)
treed51af0968a8043adccb64e3811d13599635e7925 /mm/shmem.c
parentf38d58b7343882f5412a5e5719d9b302f305f2d1 (diff)
mm: memcontrol: add file_thp, shmem_thp to memory.stat
As huge page usage in the page cache and for shmem files proliferates in our production environment, the performance monitoring team has asked for per-cgroup stats on those pages. We already track and export anon_thp per cgroup. We already track file THP and shmem THP per node, so making them per-cgroup is only a matter of switching from node to lruvec counters. All callsites are in places where the pages are charged and locked, so page->memcg is stable. [hannes@cmpxchg.org: add documentation] Link: https://lkml.kernel.org/r/20201026174029.GC548555@cmpxchg.org Link: https://lkml.kernel.org/r/20201022151844.489337-1-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reviewed-by: Rik van Riel <riel@surriel.com> Reviewed-by: Shakeel Butt <shakeelb@google.com> Acked-by: David Rientjes <rientjes@google.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
-rw-r--r--mm/shmem.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/shmem.c b/mm/shmem.c
index b7361fce50bc..67ff829e2f0e 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -713,7 +713,7 @@ next:
}
if (PageTransHuge(page)) {
count_vm_event(THP_FILE_ALLOC);
- __inc_node_page_state(page, NR_SHMEM_THPS);
+ __inc_lruvec_page_state(page, NR_SHMEM_THPS);
}
mapping->nrpages += nr;
__mod_lruvec_page_state(page, NR_FILE_PAGES, nr);