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memcg: zap __memcg_{charge,uncharge}_slab

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They are simple wrappers around memcg_{charge,uncharge}_kmem, so let's
zap them and call these functions directly.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Vladimir Davydov 2015-02-10 14:11:41 -08:00 committed by Linus Torvalds
parent 4c5018ce06
commit dbf22eb6d8
3 changed files with 8 additions and 22 deletions
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5
include/linux/memcontrol.h
View File

@ -403,8 +403,9 @@ void memcg_update_array_size(int num_groups);
struct kmem_cache *__memcg_kmem_get_cache(struct kmem_cache *cachep);
void __memcg_kmem_put_cache(struct kmem_cache *cachep);
int __memcg_charge_slab(struct kmem_cache *cachep, gfp_t gfp, int order);
void __memcg_uncharge_slab(struct kmem_cache *cachep, int order);
int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
unsigned long nr_pages);
void memcg_uncharge_kmem(struct mem_cgroup *memcg, unsigned long nr_pages);
int __memcg_cleanup_cache_params(struct kmem_cache *s);

21
mm/memcontrol.c
View File

@ -2495,8 +2495,8 @@ static struct kmem_cache *memcg_params_to_cache(struct memcg_cache_params *p)
return cache_from_memcg_idx(cachep, memcg_cache_id(p->memcg));
}
static int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
unsigned long nr_pages)
int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
unsigned long nr_pages)
{
struct page_counter *counter;
int ret = 0;
@ -2533,8 +2533,7 @@ static int memcg_charge_kmem(struct mem_cgroup *memcg, gfp_t gfp,
return ret;
}
static void memcg_uncharge_kmem(struct mem_cgroup *memcg,
unsigned long nr_pages)
void memcg_uncharge_kmem(struct mem_cgroup *memcg, unsigned long nr_pages)
{
page_counter_uncharge(&memcg->memory, nr_pages);
if (do_swap_account)
@ -2767,20 +2766,6 @@ static void memcg_schedule_register_cache(struct mem_cgroup *memcg,
current->memcg_kmem_skip_account = 0;
}
int __memcg_charge_slab(struct kmem_cache *cachep, gfp_t gfp, int order)
{
unsigned int nr_pages = 1 << order;
return memcg_charge_kmem(cachep->memcg_params->memcg, gfp, nr_pages);
}
void __memcg_uncharge_slab(struct kmem_cache *cachep, int order)
{
unsigned int nr_pages = 1 << order;
memcg_uncharge_kmem(cachep->memcg_params->memcg, nr_pages);
}
/*
* Return the kmem_cache we're supposed to use for a slab allocation.
* We try to use the current memcg's version of the cache.

4
mm/slab.h
View File

@ -235,7 +235,7 @@ static __always_inline int memcg_charge_slab(struct kmem_cache *s,
return 0;
if (is_root_cache(s))
return 0;
return __memcg_charge_slab(s, gfp, order);
return memcg_charge_kmem(s->memcg_params->memcg, gfp, 1 << order);
}
static __always_inline void memcg_uncharge_slab(struct kmem_cache *s, int order)
@ -244,7 +244,7 @@ static __always_inline void memcg_uncharge_slab(struct kmem_cache *s, int order)
return;
if (is_root_cache(s))
return;
__memcg_uncharge_slab(s, order);
memcg_uncharge_kmem(s->memcg_params->memcg, 1 << order);
}
#else
static inline bool is_root_cache(struct kmem_cache *s)