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author | Vladimir Davydov <vdavydov@parallels.com> | 2015-02-12 22:58:57 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-02-13 02:54:09 (GMT) |
commit | dbcf73e26cd0b3d66e6db65ab595e664a55e58ff (patch) | |
tree | b4b57e45b717d18b5f6ae2663797a6c73cf7175d | |
parent | cb731d6c62bbc2f890b08ea3d0386d5dad887326 (diff) | |
download | linux-dbcf73e26cd0b3d66e6db65ab595e664a55e58ff.tar.xz |
memcg: rename some cache id related variables
memcg_limited_groups_array_size, which defines the size of memcg_caches
arrays, sounds rather cumbersome. Also it doesn't point anyhow that
it's related to kmem/caches stuff. So let's rename it to
memcg_nr_cache_ids. It's concise and points us directly to
memcg_cache_id.
Also, rename kmem_limited_groups to memcg_cache_ida.
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>
-rw-r--r-- | include/linux/memcontrol.h | 4 | ||||
-rw-r--r-- | mm/memcontrol.c | 19 | ||||
-rw-r--r-- | mm/slab_common.c | 4 |
3 files changed, 13 insertions, 14 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 54992fe..2607c91 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -398,7 +398,7 @@ static inline void sock_release_memcg(struct sock *sk) #ifdef CONFIG_MEMCG_KMEM extern struct static_key memcg_kmem_enabled_key; -extern int memcg_limited_groups_array_size; +extern int memcg_nr_cache_ids; /* * Helper macro to loop through all memcg-specific caches. Callers must still @@ -406,7 +406,7 @@ extern int memcg_limited_groups_array_size; * the slab_mutex must be held when looping through those caches */ #define for_each_memcg_cache_index(_idx) \ - for ((_idx) = 0; (_idx) < memcg_limited_groups_array_size; (_idx)++) + for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) static inline bool memcg_kmem_enabled(void) { diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 3c2a1a8..8608fa5 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -538,12 +538,11 @@ static void disarm_sock_keys(struct mem_cgroup *memcg) * memcgs, and none but the 200th is kmem-limited, we'd have to have a * 200 entry array for that. * - * The current size of the caches array is stored in - * memcg_limited_groups_array_size. It will double each time we have to - * increase it. + * The current size of the caches array is stored in memcg_nr_cache_ids. It + * will double each time we have to increase it. */ -static DEFINE_IDA(kmem_limited_groups); -int memcg_limited_groups_array_size; +static DEFINE_IDA(memcg_cache_ida); +int memcg_nr_cache_ids; /* * MIN_SIZE is different than 1, because we would like to avoid going through @@ -2538,12 +2537,12 @@ static int memcg_alloc_cache_id(void) int id, size; int err; - id = ida_simple_get(&kmem_limited_groups, + id = ida_simple_get(&memcg_cache_ida, 0, MEMCG_CACHES_MAX_SIZE, GFP_KERNEL); if (id < 0) return id; - if (id < memcg_limited_groups_array_size) + if (id < memcg_nr_cache_ids) return id; /* @@ -2559,7 +2558,7 @@ static int memcg_alloc_cache_id(void) err = memcg_update_all_caches(size); if (err) { - ida_simple_remove(&kmem_limited_groups, id); + ida_simple_remove(&memcg_cache_ida, id); return err; } return id; @@ -2567,7 +2566,7 @@ static int memcg_alloc_cache_id(void) static void memcg_free_cache_id(int id) { - ida_simple_remove(&kmem_limited_groups, id); + ida_simple_remove(&memcg_cache_ida, id); } /* @@ -2577,7 +2576,7 @@ static void memcg_free_cache_id(int id) */ void memcg_update_array_size(int num) { - memcg_limited_groups_array_size = num; + memcg_nr_cache_ids = num; } struct memcg_kmem_cache_create_work { diff --git a/mm/slab_common.c b/mm/slab_common.c index 6e1e4cf..f8899ee 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -116,7 +116,7 @@ static int memcg_alloc_cache_params(struct mem_cgroup *memcg, if (!memcg) { size = offsetof(struct memcg_cache_params, memcg_caches); - size += memcg_limited_groups_array_size * sizeof(void *); + size += memcg_nr_cache_ids * sizeof(void *); } else size = sizeof(struct memcg_cache_params); @@ -154,7 +154,7 @@ static int memcg_update_cache_params(struct kmem_cache *s, int num_memcgs) cur_params = s->memcg_params; memcpy(new_params->memcg_caches, cur_params->memcg_caches, - memcg_limited_groups_array_size * sizeof(void *)); + memcg_nr_cache_ids * sizeof(void *)); new_params->is_root_cache = true; |