diff options
| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2011-02-02 00:52:45 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-02-03 01:03:19 +0100 |
| commit | 3751d60430fe4c26460a5ca8ad8672d32f93bcb1 (patch) | |
| tree | f0bbefb76a4fc328ca441bd71fc49a5a091bb323 /mm | |
| parent | memcg: never OOM when charging huge pages (diff) | |
| download | linux-3751d60430fe4c26460a5ca8ad8672d32f93bcb1.tar.xz linux-3751d60430fe4c26460a5ca8ad8672d32f93bcb1.zip | |
memcg: fix event counting breakage from recent THP update
Changes in e401f1761 ("memcg: modify accounting function for supporting
THP better") adds nr_pages to support multiple page size in
memory_cgroup_charge_statistics.
But counting the number of event nees abs(nr_pages) for increasing
counters. This patch fixes event counting.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index fc75f34ba609..da53a252b259 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -612,8 +612,10 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *mem, /* pagein of a big page is an event. So, ignore page size */ if (nr_pages > 0) __this_cpu_inc(mem->stat->count[MEM_CGROUP_STAT_PGPGIN_COUNT]); - else + else { __this_cpu_inc(mem->stat->count[MEM_CGROUP_STAT_PGPGOUT_COUNT]); + nr_pages = -nr_pages; /* for event */ + } __this_cpu_add(mem->stat->count[MEM_CGROUP_EVENTS], nr_pages); |