Commit 55e462b0 authored by Balaji Rao's avatar Balaji Rao Committed by Linus Torvalds
Browse files

memcg: simple stats for memory resource controller 



Implement trivial statistics for the memory resource controller.

Signed-off-by: default avatarBalaji Rao <balajirrao@gmail.com>
Acked-by: default avatarBalbir Singh <balbir@linux.vnet.ibm.com>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f39e5781

mm/memcontrol.c

+11 −0
Original line number Diff line number Diff line
@@ -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,

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