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| author | Vladimir Davydov <vdavydov@parallels.com> | 2015-02-13 01:58:54 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-13 05:54:09 +0300 |
| commit | cb731d6c62bbc2f890b08ea3d0386d5dad887326 (patch) | |
| tree | 1c597a1018d8258585aa65b3c4872a9c5d177d46 /include/linux/memcontrol.h | |
| parent | 4101b624352fddb5ed72e7a1b6f8be8cffaa20fa (diff) | |
| download | linux-cb731d6c62bbc2f890b08ea3d0386d5dad887326.tar.xz | |
vmscan: per memory cgroup slab shrinkers
This patch adds SHRINKER_MEMCG_AWARE flag. If a shrinker has this flag
set, it will be called per memory cgroup. The memory cgroup to scan
objects from is passed in shrink_control->memcg. If the memory cgroup
is NULL, a memcg aware shrinker is supposed to scan objects from the
global list. Unaware shrinkers are only called on global pressure with
memcg=NULL.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Greg Thelen <gthelen@google.com>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 6cfd934c7c9b..54992fe0959f 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -413,6 +413,8 @@ static inline bool memcg_kmem_enabled(void) return static_key_false(&memcg_kmem_enabled_key); } +bool memcg_kmem_is_active(struct mem_cgroup *memcg); + /* * In general, we'll do everything in our power to not incur in any overhead * for non-memcg users for the kmem functions. Not even a function call, if we @@ -542,6 +544,11 @@ static inline bool memcg_kmem_enabled(void) return false; } +static inline bool memcg_kmem_is_active(struct mem_cgroup *memcg) +{ + return false; +} + static inline bool memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) { |