diff options
Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 67 |
1 files changed, 51 insertions, 16 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 0e5bf25d324f..34d2da05f2f1 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -57,7 +57,7 @@ enum memcg_memory_event { struct mem_cgroup_reclaim_cookie { pg_data_t *pgdat; - unsigned int generation; + int generation; }; #ifdef CONFIG_MEMCG @@ -70,6 +70,7 @@ struct mem_cgroup_id { }; struct memcg_vmstats_percpu; +struct memcg1_events_percpu; struct memcg_vmstats; struct lruvec_stats_percpu; struct lruvec_stats; @@ -77,7 +78,7 @@ struct lruvec_stats; struct mem_cgroup_reclaim_iter { struct mem_cgroup *position; /* scan generation, increased every round-trip */ - unsigned int generation; + atomic_t generation; }; /* @@ -193,6 +194,11 @@ struct mem_cgroup { struct page_counter memsw; /* v1 only */ }; + /* registered local peak watchers */ + struct list_head memory_peaks; + struct list_head swap_peaks; + spinlock_t peaks_lock; + /* Range enforcement for interrupt charges */ struct work_struct high_work; @@ -270,6 +276,8 @@ struct mem_cgroup { struct page_counter kmem; /* v1 only */ struct page_counter tcpmem; /* v1 only */ + struct memcg1_events_percpu __percpu *events_percpu; + unsigned long soft_limit; /* protected by memcg_oom_lock */ @@ -361,11 +369,11 @@ static inline bool folio_memcg_kmem(struct folio *folio); * After the initialization objcg->memcg is always pointing at * a valid memcg, but can be atomically swapped to the parent memcg. * - * The caller must ensure that the returned memcg won't be released: - * e.g. acquire the rcu_read_lock or css_set_lock. + * The caller must ensure that the returned memcg won't be released. */ static inline struct mem_cgroup *obj_cgroup_memcg(struct obj_cgroup *objcg) { + lockdep_assert_once(rcu_read_lock_held() || lockdep_is_held(&cgroup_mutex)); return READ_ONCE(objcg->memcg); } @@ -439,6 +447,19 @@ static inline struct mem_cgroup *folio_memcg(struct folio *folio) return __folio_memcg(folio); } +/* + * folio_memcg_charged - If a folio is charged to a memory cgroup. + * @folio: Pointer to the folio. + * + * Returns true if folio is charged to a memory cgroup, otherwise returns false. + */ +static inline bool folio_memcg_charged(struct folio *folio) +{ + if (folio_memcg_kmem(folio)) + return __folio_objcg(folio) != NULL; + return __folio_memcg(folio) != NULL; +} + /** * folio_memcg_rcu - Locklessly get the memory cgroup associated with a folio. * @folio: Pointer to the folio. @@ -455,7 +476,6 @@ static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio) unsigned long memcg_data = READ_ONCE(folio->memcg_data); VM_BUG_ON_FOLIO(folio_test_slab(folio), folio); - WARN_ON_ONCE(!rcu_read_lock_held()); if (memcg_data & MEMCG_DATA_KMEM) { struct obj_cgroup *objcg; @@ -464,6 +484,8 @@ static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio) return obj_cgroup_memcg(objcg); } + WARN_ON_ONCE(!rcu_read_lock_held()); + return (struct mem_cgroup *)(memcg_data & ~OBJEXTS_FLAGS_MASK); } @@ -677,7 +699,8 @@ int mem_cgroup_hugetlb_try_charge(struct mem_cgroup *memcg, gfp_t gfp, int mem_cgroup_swapin_charge_folio(struct folio *folio, struct mm_struct *mm, gfp_t gfp, swp_entry_t entry); -void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry); + +void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry, unsigned int nr_pages); void __mem_cgroup_uncharge(struct folio *folio); @@ -762,6 +785,8 @@ struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); struct mem_cgroup *get_mem_cgroup_from_current(void); +struct mem_cgroup *get_mem_cgroup_from_folio(struct folio *folio); + struct lruvec *folio_lruvec_lock(struct folio *folio); struct lruvec *folio_lruvec_lock_irq(struct folio *folio); struct lruvec *folio_lruvec_lock_irqsave(struct folio *folio, @@ -1006,8 +1031,8 @@ static inline void count_memcg_folio_events(struct folio *folio, count_memcg_events(memcg, idx, nr); } -static inline void count_memcg_event_mm(struct mm_struct *mm, - enum vm_event_item idx) +static inline void count_memcg_events_mm(struct mm_struct *mm, + enum vm_event_item idx, unsigned long count) { struct mem_cgroup *memcg; @@ -1017,10 +1042,16 @@ 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)) - count_memcg_events(memcg, idx, 1); + count_memcg_events(memcg, idx, count); rcu_read_unlock(); } +static inline void count_memcg_event_mm(struct mm_struct *mm, + enum vm_event_item idx) +{ + count_memcg_events_mm(mm, idx, 1); +} + static inline void memcg_memory_event(struct mem_cgroup *memcg, enum memcg_memory_event event) { @@ -1176,7 +1207,7 @@ static inline int mem_cgroup_swapin_charge_folio(struct folio *folio, return 0; } -static inline void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry) +static inline void mem_cgroup_swapin_uncharge_swap(swp_entry_t entry, unsigned int nr) { } @@ -1240,6 +1271,11 @@ static inline struct mem_cgroup *get_mem_cgroup_from_current(void) return NULL; } +static inline struct mem_cgroup *get_mem_cgroup_from_folio(struct folio *folio) +{ + return NULL; +} + static inline struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css) { @@ -1462,6 +1498,11 @@ static inline void count_memcg_folio_events(struct folio *folio, { } +static inline void count_memcg_events_mm(struct mm_struct *mm, + enum vm_event_item idx, unsigned long count) +{ +} + static inline void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) { @@ -1717,7 +1758,6 @@ static inline int memcg_kmem_id(struct mem_cgroup *memcg) return memcg ? memcg->kmemcg_id : -1; } -struct mem_cgroup *mem_cgroup_from_obj(void *p); struct mem_cgroup *mem_cgroup_from_slab_obj(void *p); static inline void count_objcg_event(struct obj_cgroup *objcg, @@ -1780,11 +1820,6 @@ static inline int memcg_kmem_id(struct mem_cgroup *memcg) return -1; } -static inline struct mem_cgroup *mem_cgroup_from_obj(void *p) -{ - return NULL; -} - static inline struct mem_cgroup *mem_cgroup_from_slab_obj(void *p) { return NULL; |