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mm: memcg: export workingset refault stats for cgroup v1

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Workingset refault stats are important and useful metrics to measure how
well reclaimer and swapping work and how healthy the services are, but
they are just available for cgroup v2.  There are still plenty users with
cgroup v1, export the stats for cgroup v1.

Link: https://lkml.kernel.org/r/20220816185801.651091-1-shy828301@gmail.com
Signed-off-by: Yang Shi <shy828301@gmail.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Yosry Ahmed <yosryahmed@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Yang Shi 2022-08-16 11:58:01 -07:00 committed by Andrew Morton
parent 8f0efa81df
commit e09b0b61fb
1 changed files with 7 additions and 2 deletions
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9
mm/memcontrol.c
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@ -3975,6 +3975,8 @@ static const unsigned int memcg1_stats[] = {
NR_FILE_MAPPED,
NR_FILE_DIRTY,
NR_WRITEBACK,
WORKINGSET_REFAULT_ANON,
WORKINGSET_REFAULT_FILE,
MEMCG_SWAP,
};
@ -3988,6 +3990,8 @@ static const char *const memcg1_stat_names[] = {
"mapped_file",
"dirty",
"writeback",
"workingset_refault_anon",
"workingset_refault_file",
"swap",
};
@ -4016,7 +4020,8 @@ static int memcg_stat_show(struct seq_file *m, void *v)
if (memcg1_stats[i] == MEMCG_SWAP && !do_memsw_account())
continue;
nr = memcg_page_state_local(memcg, memcg1_stats[i]);
seq_printf(m, "%s %lu\n", memcg1_stat_names[i], nr * PAGE_SIZE);
seq_printf(m, "%s %lu\n", memcg1_stat_names[i],
nr * memcg_page_state_unit(memcg1_stats[i]));
}
for (i = 0; i < ARRAY_SIZE(memcg1_events); i++)
@ -4047,7 +4052,7 @@ static int memcg_stat_show(struct seq_file *m, void *v)
continue;
nr = memcg_page_state(memcg, memcg1_stats[i]);
seq_printf(m, "total_%s %llu\n", memcg1_stat_names[i],
(u64)nr * PAGE_SIZE);
(u64)nr * memcg_page_state_unit(memcg1_stats[i]));
}
for (i = 0; i < ARRAY_SIZE(memcg1_events); i++)