From 55e462b05b5df4fd113c4a304c4f487d44b0898e Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Thu, 1 May 2008 04:35:12 -0700 Subject: memcg: simple stats for memory resource controller Implement trivial statistics for the memory resource controller. Signed-off-by: Balaji Rao Acked-by: Balbir Singh Cc: Dhaval Giani Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'mm/memcontrol.c') diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 33add96cd5fb..e46451e1d9b7 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -48,6 +48,8 @@ enum mem_cgroup_stat_index { */ MEM_CGROUP_STAT_CACHE, /* # of pages charged as cache */ MEM_CGROUP_STAT_RSS, /* # of pages charged as rss */ + MEM_CGROUP_STAT_PGPGIN_COUNT, /* # of pages paged in */ + MEM_CGROUP_STAT_PGPGOUT_COUNT, /* # of pages paged out */ MEM_CGROUP_STAT_NSTATS, }; @@ -199,6 +201,13 @@ static void mem_cgroup_charge_statistics(struct mem_cgroup *mem, int flags, __mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_CACHE, val); else __mem_cgroup_stat_add_safe(stat, MEM_CGROUP_STAT_RSS, val); + + if (charge) + __mem_cgroup_stat_add_safe(stat, + MEM_CGROUP_STAT_PGPGIN_COUNT, 1); + else + __mem_cgroup_stat_add_safe(stat, + MEM_CGROUP_STAT_PGPGOUT_COUNT, 1); } static struct mem_cgroup_per_zone * @@ -884,6 +893,8 @@ static const struct mem_cgroup_stat_desc { } mem_cgroup_stat_desc[] = { [MEM_CGROUP_STAT_CACHE] = { "cache", PAGE_SIZE, }, [MEM_CGROUP_STAT_RSS] = { "rss", PAGE_SIZE, }, + [MEM_CGROUP_STAT_PGPGIN_COUNT] = {"pgpgin", 1, }, + [MEM_CGROUP_STAT_PGPGOUT_COUNT] = {"pgpgout", 1, }, }; static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft, -- cgit v1.2.3-59-g8ed1b