mmmemcg-provide-per-cgroup-counters-for-numa-balancing-operations-v4

added documentation of the memcg counters in cgroup-v2.rst

Link: https://lkml.kernel.org/r/20240814235122.252309-1-kaiyang2@cs.cmu.edu
Signed-off-by: Kaiyang Zhao <kaiyang2@cs.cmu.edu>
Cc: David Rientjes <rientjes@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Cc: Wei Xu <weixugc@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/Documentation/admin-guide/cgroup-v2.rst b/Documentation/admin-guide/cgroup-v2.rst
index f0499884124d2dacf920b0eb4d71b18e5e9df834..d3344218010cd7a8d6405ddab44ce3141a3f3cb3 100644 (file)
--- a/Documentation/admin-guide/cgroup-v2.rst
+++ b/Documentation/admin-guide/cgroup-v2.rst
@@ -1617,6 +1617,25 @@ The following nested keys are defined.
                Usually because failed to allocate some continuous swap space
                for the huge page.
 
+         numa_pages_migrated (npn)
+               Number of pages migrated by NUMA balancing.
+
+         numa_pte_updates (npn)
+               Number of pages whose page table entries are modified by
+               NUMA balancing to produce NUMA hinting faults on access.
+
+         numa_hint_faults (npn)
+               Number of NUMA hinting faults.
+
+         pgdemote_kswapd
+               Number of pages demoted by kswapd.
+
+         pgdemote_direct
+               Number of pages demoted directly.
+
+         pgdemote_khugepaged
+               Number of pages demoted by khugepaged.
+
   memory.numa_stat
        A read-only nested-keyed file which exists on non-root cgroups.