diff options
Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 173 |
1 files changed, 59 insertions, 114 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 56e6069d2..5d8ca6e02 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -52,7 +52,7 @@ enum mem_cgroup_stat_index { MEM_CGROUP_STAT_SWAP, /* # of pages, swapped out */ MEM_CGROUP_STAT_NSTATS, /* default hierarchy stats */ - MEMCG_KERNEL_STACK = MEM_CGROUP_STAT_NSTATS, + MEMCG_KERNEL_STACK_KB = MEM_CGROUP_STAT_NSTATS, MEMCG_SLAB_RECLAIMABLE, MEMCG_SLAB_UNRECLAIMABLE, MEMCG_SOCK, @@ -60,7 +60,7 @@ enum mem_cgroup_stat_index { }; struct mem_cgroup_reclaim_cookie { - struct zone *zone; + pg_data_t *pgdat; int priority; unsigned int generation; }; @@ -118,7 +118,7 @@ struct mem_cgroup_reclaim_iter { /* * per-zone information in memory controller. */ -struct mem_cgroup_per_zone { +struct mem_cgroup_per_node { struct lruvec lruvec; unsigned long lru_size[NR_LRU_LISTS]; @@ -132,10 +132,6 @@ struct mem_cgroup_per_zone { /* use container_of */ }; -struct mem_cgroup_per_node { - struct mem_cgroup_per_zone zoneinfo[MAX_NR_ZONES]; -}; - struct mem_cgroup_threshold { struct eventfd_ctx *eventfd; unsigned long threshold; @@ -314,8 +310,46 @@ void mem_cgroup_uncharge_list(struct list_head *page_list); void mem_cgroup_migrate(struct page *oldpage, struct page *newpage); -struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *); -struct lruvec *mem_cgroup_page_lruvec(struct page *, struct zone *); +static struct mem_cgroup_per_node * +mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) +{ + return memcg->nodeinfo[nid]; +} + +/** + * mem_cgroup_lruvec - get the lru list vector for a node or a memcg zone + * @node: node of the wanted lruvec + * @memcg: memcg of the wanted lruvec + * + * Returns the lru list vector holding pages for a given @node or a given + * @memcg and @zone. This can be the node lruvec, if the memory controller + * is disabled. + */ +static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, + struct mem_cgroup *memcg) +{ + struct mem_cgroup_per_node *mz; + struct lruvec *lruvec; + + if (mem_cgroup_disabled()) { + lruvec = node_lruvec(pgdat); + goto out; + } + + mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id); + lruvec = &mz->lruvec; +out: + /* + * Since a node can be onlined after the mem_cgroup was created, + * we have to be prepared to initialize lruvec->pgdat here; + * and if offlined then reonlined, we need to reinitialize it. + */ + if (unlikely(lruvec->pgdat != pgdat)) + lruvec->pgdat = pgdat; + return lruvec; +} + +struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *); bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg); struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); @@ -404,9 +438,9 @@ unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, static inline unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) { - struct mem_cgroup_per_zone *mz; + struct mem_cgroup_per_node *mz; - mz = container_of(lruvec, struct mem_cgroup_per_zone, lruvec); + mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); return mz->lru_size[lru]; } @@ -477,7 +511,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, mem_cgroup_update_page_stat(page, idx, -1); } -unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, +unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, gfp_t gfp_mask, unsigned long *total_scanned); @@ -568,16 +602,16 @@ static inline void mem_cgroup_migrate(struct page *old, struct page *new) { } -static inline struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone, - struct mem_cgroup *memcg) +static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, + struct mem_cgroup *memcg) { - return &zone->lruvec; + return node_lruvec(pgdat); } static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, - struct zone *zone) + struct pglist_data *pgdat) { - return &zone->lruvec; + return &pgdat->lruvec; } static inline bool mm_match_cgroup(struct mm_struct *mm, @@ -681,7 +715,7 @@ static inline void mem_cgroup_dec_page_stat(struct page *page, } static inline -unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, +unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, gfp_t gfp_mask, unsigned long *total_scanned) { @@ -749,6 +783,13 @@ static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) } #endif +struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); +void memcg_kmem_put_cache(struct kmem_cache *cachep); +int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, + struct mem_cgroup *memcg); +int memcg_kmem_charge(struct page *page, gfp_t gfp, int order); +void memcg_kmem_uncharge(struct page *page, int order); + #if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB) extern struct static_key_false memcg_kmem_enabled_key; @@ -770,22 +811,6 @@ static inline bool memcg_kmem_enabled(void) } /* - * 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 - * can avoid it. - * - * Therefore, we'll inline all those functions so that in the best case, we'll - * see that kmemcg is off for everybody and proceed quickly. If it is on, - * we'll still do most of the flag checking inline. We check a lot of - * conditions, but because they are pretty simple, they are expected to be - * fast. - */ -int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, - struct mem_cgroup *memcg); -int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order); -void __memcg_kmem_uncharge(struct page *page, int order); - -/* * helper for accessing a memcg's index. It will be used as an index in the * child cache array in kmem_cache, and also to derive its name. This function * will return -1 when this is not a kmem-limited memcg. @@ -795,67 +820,6 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg) return memcg ? memcg->kmemcg_id : -1; } -struct kmem_cache *__memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp); -void __memcg_kmem_put_cache(struct kmem_cache *cachep); - -static inline bool __memcg_kmem_bypass(void) -{ - if (!memcg_kmem_enabled()) - return true; - if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD)) - return true; - return false; -} - -/** - * memcg_kmem_charge: charge a kmem page - * @page: page to charge - * @gfp: reclaim mode - * @order: allocation order - * - * Returns 0 on success, an error code on failure. - */ -static __always_inline int memcg_kmem_charge(struct page *page, - gfp_t gfp, int order) -{ - if (__memcg_kmem_bypass()) - return 0; - if (!(gfp & __GFP_ACCOUNT)) - return 0; - return __memcg_kmem_charge(page, gfp, order); -} - -/** - * memcg_kmem_uncharge: uncharge a kmem page - * @page: page to uncharge - * @order: allocation order - */ -static __always_inline void memcg_kmem_uncharge(struct page *page, int order) -{ - if (memcg_kmem_enabled()) - __memcg_kmem_uncharge(page, order); -} - -/** - * memcg_kmem_get_cache: selects the correct per-memcg cache for allocation - * @cachep: the original global kmem cache - * - * All memory allocated from a per-memcg cache is charged to the owner memcg. - */ -static __always_inline struct kmem_cache * -memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) -{ - if (__memcg_kmem_bypass()) - return cachep; - return __memcg_kmem_get_cache(cachep, gfp); -} - -static __always_inline void memcg_kmem_put_cache(struct kmem_cache *cachep) -{ - if (memcg_kmem_enabled()) - __memcg_kmem_put_cache(cachep); -} - /** * memcg_kmem_update_page_stat - update kmem page state statistics * @page: the page @@ -878,15 +842,6 @@ static inline bool memcg_kmem_enabled(void) return false; } -static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) -{ - return 0; -} - -static inline void memcg_kmem_uncharge(struct page *page, int order) -{ -} - static inline int memcg_cache_id(struct mem_cgroup *memcg) { return -1; @@ -900,16 +855,6 @@ static inline void memcg_put_cache_ids(void) { } -static inline struct kmem_cache * -memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp) -{ - return cachep; -} - -static inline void memcg_kmem_put_cache(struct kmem_cache *cachep) -{ -} - static inline void memcg_kmem_update_page_stat(struct page *page, enum mem_cgroup_stat_index idx, int val) { |