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mm: per-cgroup memory reclaim stats

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Track the following reclaim counters for every memory cgroup: PGREFILL,
PGSCAN, PGSTEAL, PGACTIVATE, PGDEACTIVATE, PGLAZYFREE and PGLAZYFREED.

These values are exposed using the memory.stats interface of cgroup v2.

The meaning of each value is the same as for global counters, available
using /proc/vmstat.

Also, for consistency, rename mem_cgroup_count_vm_event() to
count_memcg_event_mm().

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Roman Gushchin <[email protected]>
Suggested-by: Johannes Weiner <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Vladimir Davydov <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Li Zefan <[email protected]>
Cc: Balbir Singh <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Roman Gushchin 2017-07-06 15:40:25 -07:00 • committed by Linus Torvalds
commit 2262185c5b
10 changed files with 113 additions and 17 deletions
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10
mm/memcontrol.c
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@ -5230,6 +5230,16 @@ static int memory_stat_show(struct seq_file *m, void *v)
seq_printf(m, "pgfault %lu\n", events[PGFAULT]);
seq_printf(m, "pgmajfault %lu\n", events[PGMAJFAULT]);
seq_printf(m, "pgrefill %lu\n", events[PGREFILL]);
seq_printf(m, "pgscan %lu\n", events[PGSCAN_KSWAPD] +
events[PGSCAN_DIRECT]);
seq_printf(m, "pgsteal %lu\n", events[PGSTEAL_KSWAPD] +
events[PGSTEAL_DIRECT]);
seq_printf(m, "pgactivate %lu\n", events[PGACTIVATE]);
seq_printf(m, "pgdeactivate %lu\n", events[PGDEACTIVATE]);
seq_printf(m, "pglazyfree %lu\n", events[PGLAZYFREE]);
seq_printf(m, "pglazyfreed %lu\n", events[PGLAZYFREED]);
seq_printf(m, "workingset_refault %lu\n",
stat[WORKINGSET_REFAULT]);
seq_printf(m, "workingset_activate %lu\n",