memcg swpin/swpout stats were added in commit 81e2afa8125e
("mm: memcontrol: add swapin/out stats"). But broken later
in rebased upstream patch 33b7f8c4475f ("ms/mm: memcontrol: rewrite charge
API").
Fixes: 33b7f8c4475f ("ms/mm: memcontrol: rewrite charge API")
Reported-by: Stanislav Kinsburskiy <skinsbur...@virtuozzo.com>
Signed-off-by: Andrey Ryabinin <aryabi...@virtuozzo.com>
---
mm/memcontrol.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 325dee2cd903..62bc6fd7ceb8 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -6893,6 +6893,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t
entry)
pc->flags &= ~PCG_MEMSW;
css_get(&pc->mem_cgroup->css);
mem_cgroup_swap_statistics(pc->mem_cgroup, true);
+ this_cpu_inc(pc->mem_cgroup->stat->events[MEM_CGROUP_EVENTS_PSWPOUT]);
}
/**
@@ -6916,6 +6917,7 @@ void mem_cgroup_uncharge_swap(swp_entry_t entry)
if (!mem_cgroup_is_root(memcg))
page_counter_uncharge(&memcg->memsw, 1);
mem_cgroup_swap_statistics(memcg, false);
+ this_cpu_inc(memcg->stat->events[MEM_CGROUP_EVENTS_PSWPIN]);
css_put(&memcg->css);
}
rcu_read_unlock();
--
2.13.6
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