diff options
Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 77 |
1 files changed, 60 insertions, 17 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index d99b71bc2c66..6c6fb116e925 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -53,9 +53,18 @@ enum memcg_memory_event { MEMCG_HIGH, MEMCG_MAX, MEMCG_OOM, + MEMCG_OOM_KILL, + MEMCG_SWAP_MAX, + MEMCG_SWAP_FAIL, MEMCG_NR_MEMORY_EVENTS, }; +enum mem_cgroup_protection { + MEMCG_PROT_NONE, + MEMCG_PROT_LOW, + MEMCG_PROT_MIN, +}; + struct mem_cgroup_reclaim_cookie { pg_data_t *pgdat; int priority; @@ -158,6 +167,15 @@ enum memcg_kmem_state { KMEM_ONLINE, }; +#if defined(CONFIG_SMP) +struct memcg_padding { + char x[0]; +} ____cacheline_internodealigned_in_smp; +#define MEMCG_PADDING(name) struct memcg_padding name; +#else +#define MEMCG_PADDING(name) +#endif + /* * The memory controller data structure. The memory controller controls both * page cache and RSS per cgroup. We would eventually like to provide @@ -179,8 +197,7 @@ struct mem_cgroup { struct page_counter kmem; struct page_counter tcpmem; - /* Normal memory consumption range */ - unsigned long low; + /* Upper bound of normal memory consumption range */ unsigned long high; /* Range enforcement for interrupt charges */ @@ -205,9 +222,11 @@ struct mem_cgroup { int oom_kill_disable; /* memory.events */ - atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; struct cgroup_file events_file; + /* handle for "memory.swap.events" */ + struct cgroup_file swap_events_file; + /* protect arrays of thresholds */ struct mutex thresholds_lock; @@ -225,19 +244,26 @@ struct mem_cgroup { * mem_cgroup ? And what type of charges should we move ? */ unsigned long move_charge_at_immigrate; + /* taken only while moving_account > 0 */ + spinlock_t move_lock; + unsigned long move_lock_flags; + + MEMCG_PADDING(_pad1_); + /* * set > 0 if pages under this cgroup are moving to other cgroup. */ atomic_t moving_account; - /* taken only while moving_account > 0 */ - spinlock_t move_lock; struct task_struct *move_lock_task; - unsigned long move_lock_flags; /* memory.stat */ struct mem_cgroup_stat_cpu __percpu *stat_cpu; + + MEMCG_PADDING(_pad2_); + atomic_long_t stat[MEMCG_NR_STAT]; atomic_long_t events[NR_VM_EVENT_ITEMS]; + atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; unsigned long socket_pressure; @@ -285,7 +311,8 @@ static inline bool mem_cgroup_disabled(void) return !cgroup_subsys_enabled(memory_cgrp_subsys); } -bool mem_cgroup_low(struct mem_cgroup *root, struct mem_cgroup *memcg); +enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root, + struct mem_cgroup *memcg); int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask, struct mem_cgroup **memcgp, @@ -462,7 +489,7 @@ unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, void mem_cgroup_handle_over_high(void); -unsigned long mem_cgroup_get_limit(struct mem_cgroup *memcg); +unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p); @@ -694,11 +721,8 @@ static inline void count_memcg_event_mm(struct mm_struct *mm, rcu_read_lock(); memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); - if (likely(memcg)) { + if (likely(memcg)) count_memcg_events(memcg, idx, 1); - if (idx == OOM_KILL) - cgroup_file_notify(&memcg->events_file); - } rcu_read_unlock(); } @@ -709,6 +733,21 @@ static inline void memcg_memory_event(struct mem_cgroup *memcg, cgroup_file_notify(&memcg->events_file); } +static inline void memcg_memory_event_mm(struct mm_struct *mm, + enum memcg_memory_event event) +{ + struct mem_cgroup *memcg; + + if (mem_cgroup_disabled()) + return; + + rcu_read_lock(); + memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); + if (likely(memcg)) + memcg_memory_event(memcg, event); + rcu_read_unlock(); +} + #ifdef CONFIG_TRANSPARENT_HUGEPAGE void mem_cgroup_split_huge_fixup(struct page *head); #endif @@ -730,10 +769,15 @@ static inline void memcg_memory_event(struct mem_cgroup *memcg, { } -static inline bool mem_cgroup_low(struct mem_cgroup *root, - struct mem_cgroup *memcg) +static inline void memcg_memory_event_mm(struct mm_struct *mm, + enum memcg_memory_event event) { - return false; +} + +static inline enum mem_cgroup_protection mem_cgroup_protected( + struct mem_cgroup *root, struct mem_cgroup *memcg) +{ + return MEMCG_PROT_NONE; } static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, @@ -853,7 +897,7 @@ mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, return 0; } -static inline unsigned long mem_cgroup_get_limit(struct mem_cgroup *memcg) +static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) { return 0; } @@ -1093,7 +1137,6 @@ static inline void dec_lruvec_page_state(struct page *page, #ifdef CONFIG_CGROUP_WRITEBACK -struct list_head *mem_cgroup_cgwb_list(struct mem_cgroup *memcg); struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, unsigned long *pheadroom, unsigned long *pdirty, |