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| author | David Rientjes <rientjes@google.com> | 2012-12-12 13:51:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 17:38:34 -0800 |
| commit | 68ae564bbac8eb9ed54ddd2529b0e29ee190b355 (patch) | |
| tree | 5cef83b5fa072f62091552457e7d0319ce170b98 /mm/page_alloc.c | |
| parent | 05b0afd73d04109d87f00ccd39f099e217c37263 (diff) | |
| download | linux-3.10-68ae564bbac8eb9ed54ddd2529b0e29ee190b355.tar.gz linux-3.10-68ae564bbac8eb9ed54ddd2529b0e29ee190b355.tar.bz2 linux-3.10-68ae564bbac8eb9ed54ddd2529b0e29ee190b355.zip | |
mm, memcg: avoid unnecessary function call when memcg is disabled
While profiling numa/core v16 with cgroup_disable=memory on the command
line, I noticed mem_cgroup_count_vm_event() still showed up as high as
0.60% in perftop.
This occurs because the function is called extremely often even when memcg
is disabled.
To fix this, inline the check for mem_cgroup_disabled() so we avoid the
unnecessary function call if memcg is disabled.
Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Glauber Costa <glommer@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions