diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memcontrol.c | 10 | ||||
| -rw-r--r-- | mm/slab.c | 44 | ||||
| -rw-r--r-- | mm/slab.h | 12 | ||||
| -rw-r--r-- | mm/slab_common.c | 7 |
4 files changed, 63 insertions, 10 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c index a32d83c..f3009b4 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3012,7 +3012,8 @@ int memcg_update_cache_size(struct kmem_cache *s, int num_groups) return 0; } -int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s) +int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s, + struct kmem_cache *root_cache) { size_t size = sizeof(struct memcg_cache_params); @@ -3026,8 +3027,10 @@ int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s) if (!s->memcg_params) return -ENOMEM; - if (memcg) + if (memcg) { s->memcg_params->memcg = memcg; + s->memcg_params->root_cache = root_cache; + } return 0; } @@ -3186,7 +3189,7 @@ static struct kmem_cache *kmem_cache_dup(struct mem_cgroup *memcg, return NULL; new = kmem_cache_create_memcg(memcg, name, s->object_size, s->align, - (s->flags & ~SLAB_PANIC), s->ctor); + (s->flags & ~SLAB_PANIC), s->ctor, s); if (new) new->allocflags |= __GFP_KMEMCG; @@ -3226,7 +3229,6 @@ static struct kmem_cache *memcg_create_kmem_cache(struct mem_cgroup *memcg, } mem_cgroup_get(memcg); - new_cachep->memcg_params->root_cache = cachep; atomic_set(&new_cachep->memcg_params->nr_pages , 0); cachep->memcg_params->memcg_caches[idx] = new_cachep; @@ -4041,7 +4041,7 @@ static void do_ccupdate_local(void *info) } /* Always called with the slab_mutex held */ -static int do_tune_cpucache(struct kmem_cache *cachep, int limit, +static int __do_tune_cpucache(struct kmem_cache *cachep, int limit, int batchcount, int shared, gfp_t gfp) { struct ccupdate_struct *new; @@ -4084,12 +4084,48 @@ static int do_tune_cpucache(struct kmem_cache *cachep, int limit, return alloc_kmemlist(cachep, gfp); } +static int do_tune_cpucache(struct kmem_cache *cachep, int limit, + int batchcount, int shared, gfp_t gfp) +{ + int ret; + struct kmem_cache *c = NULL; + int i = 0; + + ret = __do_tune_cpucache(cachep, limit, batchcount, shared, gfp); + + if (slab_state < FULL) + return ret; + + if ((ret < 0) || !is_root_cache(cachep)) + return ret; + + for_each_memcg_cache_index(i) { + c = cache_from_memcg(cachep, i); + if (c) + /* return value determined by the parent cache only */ + __do_tune_cpucache(c, limit, batchcount, shared, gfp); + } + + return ret; +} + /* Called with slab_mutex held always */ static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp) { int err; - int limit, shared; + int limit = 0; + int shared = 0; + int batchcount = 0; + + if (!is_root_cache(cachep)) { + struct kmem_cache *root = memcg_root_cache(cachep); + limit = root->limit; + shared = root->shared; + batchcount = root->batchcount; + } + if (limit && shared && batchcount) + goto skip_setup; /* * The head array serves three purposes: * - create a LIFO ordering, i.e. return objects that are cache-warm @@ -4131,7 +4167,9 @@ static int enable_cpucache(struct kmem_cache *cachep, gfp_t gfp) if (limit > 32) limit = 32; #endif - err = do_tune_cpucache(cachep, limit, (limit + 1) / 2, shared, gfp); + batchcount = (limit + 1) / 2; +skip_setup: + err = do_tune_cpucache(cachep, limit, batchcount, shared, gfp); if (err) printk(KERN_ERR "enable_cpucache failed for %s, error %d.\n", cachep->name, -err); @@ -155,6 +155,13 @@ static inline struct kmem_cache *cache_from_memcg(struct kmem_cache *s, int idx) { return s->memcg_params->memcg_caches[idx]; } + +static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s) +{ + if (is_root_cache(s)) + return s; + return s->memcg_params->root_cache; +} #else static inline bool is_root_cache(struct kmem_cache *s) { @@ -190,6 +197,11 @@ static inline struct kmem_cache *cache_from_memcg(struct kmem_cache *s, int idx) { return NULL; } + +static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s) +{ + return s; +} #endif static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) diff --git a/mm/slab_common.c b/mm/slab_common.c index 081f1b8..3f3cd97 100644 --- a/mm/slab_common.c +++ b/mm/slab_common.c @@ -164,7 +164,8 @@ unsigned long calculate_alignment(unsigned long flags, struct kmem_cache * kmem_cache_create_memcg(struct mem_cgroup *memcg, const char *name, size_t size, - size_t align, unsigned long flags, void (*ctor)(void *)) + size_t align, unsigned long flags, void (*ctor)(void *), + struct kmem_cache *parent_cache) { struct kmem_cache *s = NULL; int err = 0; @@ -193,7 +194,7 @@ kmem_cache_create_memcg(struct mem_cgroup *memcg, const char *name, size_t size, s->align = calculate_alignment(flags, align, size); s->ctor = ctor; - if (memcg_register_cache(memcg, s)) { + if (memcg_register_cache(memcg, s, parent_cache)) { kmem_cache_free(kmem_cache, s); err = -ENOMEM; goto out_locked; @@ -243,7 +244,7 @@ struct kmem_cache * kmem_cache_create(const char *name, size_t size, size_t align, unsigned long flags, void (*ctor)(void *)) { - return kmem_cache_create_memcg(NULL, name, size, align, flags, ctor); + return kmem_cache_create_memcg(NULL, name, size, align, flags, ctor, NULL); } EXPORT_SYMBOL(kmem_cache_create); |
