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Commit c137b5ec authored by KOSAKI Motohiro's avatar KOSAKI Motohiro Committed by Linus Torvalds
Browse files

memcg: remove mem_cgroup_calc_mapped_ratio() 



Currently, mem_cgroup_calc_mapped_ratio() is unused at all.  it can be
removed and KAMEZAWA-san suggested it.

Signed-off-by: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: default avatarBalbir Singh <balbir@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e222432b

include/linux/memcontrol.h

+0 −6
Original line number Diff line number Diff line
@@ -88,7 +88,6 @@ extern void mem_cgroup_end_migration(struct mem_cgroup *mem, 
/*

 * For memory reclaim.

 */

extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);

extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);



extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
@@ -211,11 +210,6 @@ static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, 
{

}



static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)

{

	return 0;

}



static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)

{

	return 0;

mm/memcontrol.c

+0 −17
Original line number Diff line number Diff line
@@ -507,23 +507,6 @@ int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem) 
	return ret;

}



/*

 * Calculate mapped_ratio under memory controller. This will be used in

 * vmscan.c for deteremining we have to reclaim mapped pages.

 */

int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)

{

	long total, rss;



	/*

	 * usage is recorded in bytes. But, here, we assume the number of

	 * physical pages can be represented by "long" on any arch.

	 */

	total = (long) (mem->res.usage >> PAGE_SHIFT) + 1L;

	rss = (long)mem_cgroup_read_stat(&mem->stat, MEM_CGROUP_STAT_RSS);

	return (int)((rss * 100L) / total);

}



/*

 * prev_priority control...this will be used in memory reclaim path.

 */