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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/khugepaged.c
parentf38d58b7343882f5412a5e5719d9b302f305f2d1 (diff)
downloadlinux-b8eddff8886b173b0a0f21a3bb1a594cc6d974d1.tar.bz2
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/khugepaged.c')
-rw-r--r--mm/khugepaged.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 4e3dff13eb70..757292532767 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1845,9 +1845,9 @@ out_unlock:
}
if (is_shmem)
- __inc_node_page_state(new_page, NR_SHMEM_THPS);
+ __inc_lruvec_page_state(new_page, NR_SHMEM_THPS);
else {
- __inc_node_page_state(new_page, NR_FILE_THPS);
+ __inc_lruvec_page_state(new_page, NR_FILE_THPS);
filemap_nr_thps_inc(mapping);
}