diff options
| author | Roman Gushchin <guro@fb.com> | 2019-07-11 20:56:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 11:05:44 -0700 |
| commit | 6cea1d569d24af6f9e95f70cb301807440ae2981 (patch) | |
| tree | 627558acba0010e257fe70d28a99ad3b35ed69ba /mm/slab.h | |
| parent | 49a18eae2e98a794477b5af5d85938e430c0be72 (diff) | |
mm: memcg/slab: unify SLAB and SLUB page accounting
Currently the page accounting code is duplicated in SLAB and SLUB
internals. Let's move it into new (un)charge_slab_page helpers in the
slab_common.c file. These helpers will be responsible for statistics
(global and memcg-aware) and memcg charging. So they are replacing direct
memcg_(un)charge_slab() calls.
Link: http://lkml.kernel.org/r/20190611231813.3148843-6-guro@fb.com
Signed-off-by: Roman Gushchin <guro@fb.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Waiman Long <longman@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Andrei Vagin <avagin@gmail.com>
Cc: Qian Cai <cai@lca.pw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/slab.h')
| -rw-r--r-- | mm/slab.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/mm/slab.h b/mm/slab.h index dc83583ee9dd..46623a576a3c 100644 --- a/mm/slab.h +++ b/mm/slab.h @@ -205,6 +205,12 @@ ssize_t slabinfo_write(struct file *file, const char __user *buffer, void __kmem_cache_free_bulk(struct kmem_cache *, size_t, void **); int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **); +static inline int cache_vmstat_idx(struct kmem_cache *s) +{ + return (s->flags & SLAB_RECLAIM_ACCOUNT) ? + NR_SLAB_RECLAIMABLE : NR_SLAB_UNRECLAIMABLE; +} + #ifdef CONFIG_MEMCG_KMEM /* List of all root caches. */ @@ -361,6 +367,25 @@ static inline struct kmem_cache *virt_to_cache(const void *obj) return page->slab_cache; } +static __always_inline int charge_slab_page(struct page *page, + gfp_t gfp, int order, + struct kmem_cache *s) +{ + int ret = memcg_charge_slab(page, gfp, order, s); + + if (!ret) + mod_lruvec_page_state(page, cache_vmstat_idx(s), 1 << order); + + return ret; +} + +static __always_inline void uncharge_slab_page(struct page *page, int order, + struct kmem_cache *s) +{ + mod_lruvec_page_state(page, cache_vmstat_idx(s), -(1 << order)); + memcg_uncharge_slab(page, order, s); +} + static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) { struct kmem_cache *cachep; |