1 /* memcontrol.h - Memory Controller
3 * Copyright IBM Corporation, 2007
4 * Author Balbir Singh <balbir@linux.vnet.ibm.com>
6 * Copyright 2007 OpenVZ SWsoft Inc
7 * Author: Pavel Emelianov <xemul@openvz.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
20 #ifndef _LINUX_MEMCONTROL_H
21 #define _LINUX_MEMCONTROL_H
22 #include <linux/cgroup.h>
23 #include <linux/vm_event_item.h>
24 #include <linux/hardirq.h>
25 #include <linux/jump_label.h>
26 #include <linux/page_counter.h>
27 #include <linux/vmpressure.h>
28 #include <linux/eventfd.h>
29 #include <linux/mmzone.h>
30 #include <linux/writeback.h>
38 * The corresponding mem_cgroup_stat_names is defined in mm/memcontrol.c,
39 * These two lists should keep in accord with each other.
41 enum mem_cgroup_stat_index {
43 * For MEM_CONTAINER_TYPE_ALL, usage = pagecache + rss.
45 MEM_CGROUP_STAT_CACHE, /* # of pages charged as cache */
46 MEM_CGROUP_STAT_RSS, /* # of pages charged as anon rss */
47 MEM_CGROUP_STAT_RSS_HUGE, /* # of pages charged as anon huge */
48 MEM_CGROUP_STAT_FILE_MAPPED, /* # of pages charged as file rss */
49 MEM_CGROUP_STAT_DIRTY, /* # of dirty pages in page cache */
50 MEM_CGROUP_STAT_WRITEBACK, /* # of pages under writeback */
51 MEM_CGROUP_STAT_SWAP, /* # of pages, swapped out */
52 MEM_CGROUP_STAT_NSTATS,
53 /* default hierarchy stats */
54 MEMCG_SOCK = MEM_CGROUP_STAT_NSTATS,
58 struct mem_cgroup_reclaim_cookie {
61 unsigned int generation;
64 enum mem_cgroup_events_index {
65 MEM_CGROUP_EVENTS_PGPGIN, /* # of pages paged in */
66 MEM_CGROUP_EVENTS_PGPGOUT, /* # of pages paged out */
67 MEM_CGROUP_EVENTS_PGFAULT, /* # of page-faults */
68 MEM_CGROUP_EVENTS_PGMAJFAULT, /* # of major page-faults */
69 MEM_CGROUP_EVENTS_NSTATS,
70 /* default hierarchy events */
71 MEMCG_LOW = MEM_CGROUP_EVENTS_NSTATS,
79 * Per memcg event counter is incremented at every pagein/pageout. With THP,
80 * it will be incremated by the number of pages. This counter is used for
81 * for trigger some periodic events. This is straightforward and better
82 * than using jiffies etc. to handle periodic memcg event.
84 enum mem_cgroup_events_target {
85 MEM_CGROUP_TARGET_THRESH,
86 MEM_CGROUP_TARGET_SOFTLIMIT,
87 MEM_CGROUP_TARGET_NUMAINFO,
93 #define MEM_CGROUP_ID_SHIFT 16
94 #define MEM_CGROUP_ID_MAX USHRT_MAX
96 struct mem_cgroup_stat_cpu {
97 long count[MEMCG_NR_STAT];
98 unsigned long events[MEMCG_NR_EVENTS];
99 unsigned long nr_page_events;
100 unsigned long targets[MEM_CGROUP_NTARGETS];
103 struct mem_cgroup_reclaim_iter {
104 struct mem_cgroup *position;
105 /* scan generation, increased every round-trip */
106 unsigned int generation;
110 * per-zone information in memory controller.
112 struct mem_cgroup_per_zone {
113 struct lruvec lruvec;
114 unsigned long lru_size[NR_LRU_LISTS];
116 struct mem_cgroup_reclaim_iter iter[DEF_PRIORITY + 1];
118 struct rb_node tree_node; /* RB tree node */
119 unsigned long usage_in_excess;/* Set to the value by which */
120 /* the soft limit is exceeded*/
122 struct mem_cgroup *memcg; /* Back pointer, we cannot */
123 /* use container_of */
126 struct mem_cgroup_per_node {
127 struct mem_cgroup_per_zone zoneinfo[MAX_NR_ZONES];
130 struct mem_cgroup_threshold {
131 struct eventfd_ctx *eventfd;
132 unsigned long threshold;
136 struct mem_cgroup_threshold_ary {
137 /* An array index points to threshold just below or equal to usage. */
138 int current_threshold;
139 /* Size of entries[] */
141 /* Array of thresholds */
142 struct mem_cgroup_threshold entries[0];
145 struct mem_cgroup_thresholds {
146 /* Primary thresholds array */
147 struct mem_cgroup_threshold_ary *primary;
149 * Spare threshold array.
150 * This is needed to make mem_cgroup_unregister_event() "never fail".
151 * It must be able to store at least primary->size - 1 entries.
153 struct mem_cgroup_threshold_ary *spare;
156 enum memcg_kmem_state {
163 * The memory controller data structure. The memory controller controls both
164 * page cache and RSS per cgroup. We would eventually like to provide
165 * statistics based on the statistics developed by Rik Van Riel for clock-pro,
166 * to help the administrator determine what knobs to tune.
169 struct cgroup_subsys_state css;
171 /* Accounted resources */
172 struct page_counter memory;
173 struct page_counter swap;
175 /* Legacy consumer-oriented counters */
176 struct page_counter memsw;
177 struct page_counter kmem;
178 struct page_counter tcpmem;
180 /* Normal memory consumption range */
184 /* Range enforcement for interrupt charges */
185 struct work_struct high_work;
187 unsigned long soft_limit;
189 /* vmpressure notifications */
190 struct vmpressure vmpressure;
193 * Should the accounting and control be hierarchical, per subtree?
197 /* protected by memcg_oom_lock */
202 /* OOM-Killer disable */
203 int oom_kill_disable;
205 /* handle for "memory.events" */
206 struct cgroup_file events_file;
208 /* protect arrays of thresholds */
209 struct mutex thresholds_lock;
211 /* thresholds for memory usage. RCU-protected */
212 struct mem_cgroup_thresholds thresholds;
214 /* thresholds for mem+swap usage. RCU-protected */
215 struct mem_cgroup_thresholds memsw_thresholds;
217 /* For oom notifier event fd */
218 struct list_head oom_notify;
221 * Should we move charges of a task when a task is moved into this
222 * mem_cgroup ? And what type of charges should we move ?
224 unsigned long move_charge_at_immigrate;
226 * set > 0 if pages under this cgroup are moving to other cgroup.
228 atomic_t moving_account;
229 /* taken only while moving_account > 0 */
230 spinlock_t move_lock;
231 struct task_struct *move_lock_task;
232 unsigned long move_lock_flags;
236 struct mem_cgroup_stat_cpu __percpu *stat;
238 unsigned long socket_pressure;
240 /* Legacy tcp memory accounting */
245 /* Index in the kmem_cache->memcg_params.memcg_caches array */
247 enum memcg_kmem_state kmem_state;
250 int last_scanned_node;
252 nodemask_t scan_nodes;
253 atomic_t numainfo_events;
254 atomic_t numainfo_updating;
257 #ifdef CONFIG_CGROUP_WRITEBACK
258 struct list_head cgwb_list;
259 struct wb_domain cgwb_domain;
262 /* List of events which userspace want to receive */
263 struct list_head event_list;
264 spinlock_t event_list_lock;
266 struct mem_cgroup_per_node *nodeinfo[0];
267 /* WARNING: nodeinfo must be the last member here */
270 extern struct mem_cgroup *root_mem_cgroup;
272 static inline bool mem_cgroup_disabled(void)
274 return !cgroup_subsys_enabled(memory_cgrp_subsys);
278 * mem_cgroup_events - count memory events against a cgroup
279 * @memcg: the memory cgroup
280 * @idx: the event index
281 * @nr: the number of events to account for
283 static inline void mem_cgroup_events(struct mem_cgroup *memcg,
284 enum mem_cgroup_events_index idx,
287 this_cpu_add(memcg->stat->events[idx], nr);
288 cgroup_file_notify(&memcg->events_file);
291 bool mem_cgroup_low(struct mem_cgroup *root, struct mem_cgroup *memcg);
293 int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm,
294 gfp_t gfp_mask, struct mem_cgroup **memcgp,
296 void mem_cgroup_commit_charge(struct page *page, struct mem_cgroup *memcg,
297 bool lrucare, bool compound);
298 void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg,
300 void mem_cgroup_uncharge(struct page *page);
301 void mem_cgroup_uncharge_list(struct list_head *page_list);
303 void mem_cgroup_migrate(struct page *oldpage, struct page *newpage);
305 struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *);
306 struct lruvec *mem_cgroup_page_lruvec(struct page *, struct zone *);
308 bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg);
309 struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
312 struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){
313 return css ? container_of(css, struct mem_cgroup, css) : NULL;
316 #define mem_cgroup_from_counter(counter, member) \
317 container_of(counter, struct mem_cgroup, member)
319 struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *,
321 struct mem_cgroup_reclaim_cookie *);
322 void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *);
324 static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg)
326 if (mem_cgroup_disabled())
329 return memcg->css.id;
333 * mem_cgroup_from_id - look up a memcg from an id
334 * @id: the id to look up
336 * Caller must hold rcu_read_lock() and use css_tryget() as necessary.
338 static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id)
340 struct cgroup_subsys_state *css;
342 css = css_from_id(id, &memory_cgrp_subsys);
343 return mem_cgroup_from_css(css);
347 * parent_mem_cgroup - find the accounting parent of a memcg
348 * @memcg: memcg whose parent to find
350 * Returns the parent memcg, or NULL if this is the root or the memory
351 * controller is in legacy no-hierarchy mode.
353 static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg)
355 if (!memcg->memory.parent)
357 return mem_cgroup_from_counter(memcg->memory.parent, memory);
360 static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg,
361 struct mem_cgroup *root)
365 if (!root->use_hierarchy)
367 return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup);
370 static inline bool mm_match_cgroup(struct mm_struct *mm,
371 struct mem_cgroup *memcg)
373 struct mem_cgroup *task_memcg;
377 task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner));
379 match = mem_cgroup_is_descendant(task_memcg, memcg);
384 struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page);
385 ino_t page_cgroup_ino(struct page *page);
387 static inline bool mem_cgroup_online(struct mem_cgroup *memcg)
389 if (mem_cgroup_disabled())
391 return !!(memcg->css.flags & CSS_ONLINE);
395 * For memory reclaim.
397 int mem_cgroup_select_victim_node(struct mem_cgroup *memcg);
399 void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru,
403 unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
405 struct mem_cgroup_per_zone *mz;
407 mz = container_of(lruvec, struct mem_cgroup_per_zone, lruvec);
408 return mz->lru_size[lru];
411 static inline bool mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
413 unsigned long inactive_ratio;
414 unsigned long inactive;
415 unsigned long active;
418 inactive = mem_cgroup_get_lru_size(lruvec, LRU_INACTIVE_ANON);
419 active = mem_cgroup_get_lru_size(lruvec, LRU_ACTIVE_ANON);
421 gb = (inactive + active) >> (30 - PAGE_SHIFT);
423 inactive_ratio = int_sqrt(10 * gb);
427 return inactive * inactive_ratio < active;
430 void mem_cgroup_handle_over_high(void);
432 void mem_cgroup_print_oom_info(struct mem_cgroup *memcg,
433 struct task_struct *p);
435 static inline void mem_cgroup_oom_enable(void)
437 WARN_ON(current->memcg_may_oom);
438 current->memcg_may_oom = 1;
441 static inline void mem_cgroup_oom_disable(void)
443 WARN_ON(!current->memcg_may_oom);
444 current->memcg_may_oom = 0;
447 static inline bool task_in_memcg_oom(struct task_struct *p)
449 return p->memcg_in_oom;
452 bool mem_cgroup_oom_synchronize(bool wait);
454 #ifdef CONFIG_MEMCG_SWAP
455 extern int do_swap_account;
458 struct mem_cgroup *lock_page_memcg(struct page *page);
459 void unlock_page_memcg(struct mem_cgroup *memcg);
462 * mem_cgroup_update_page_stat - update page state statistics
463 * @memcg: memcg to account against
464 * @idx: page state item to account
465 * @val: number of pages (positive or negative)
467 * Callers must use lock_page_memcg() to prevent double accounting
468 * when the page is concurrently being moved to another memcg:
470 * memcg = lock_page_memcg(page);
471 * if (TestClearPageState(page))
472 * mem_cgroup_update_page_stat(memcg, state, -1);
473 * unlock_page_memcg(memcg);
475 static inline void mem_cgroup_update_page_stat(struct mem_cgroup *memcg,
476 enum mem_cgroup_stat_index idx, int val)
478 VM_BUG_ON(!rcu_read_lock_held());
481 this_cpu_add(memcg->stat->count[idx], val);
484 static inline void mem_cgroup_inc_page_stat(struct mem_cgroup *memcg,
485 enum mem_cgroup_stat_index idx)
487 mem_cgroup_update_page_stat(memcg, idx, 1);
490 static inline void mem_cgroup_dec_page_stat(struct mem_cgroup *memcg,
491 enum mem_cgroup_stat_index idx)
493 mem_cgroup_update_page_stat(memcg, idx, -1);
496 unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
498 unsigned long *total_scanned);
500 static inline void mem_cgroup_count_vm_event(struct mm_struct *mm,
501 enum vm_event_item idx)
503 struct mem_cgroup *memcg;
505 if (mem_cgroup_disabled())
509 memcg = mem_cgroup_from_task(rcu_dereference(mm->owner));
510 if (unlikely(!memcg))
515 this_cpu_inc(memcg->stat->events[MEM_CGROUP_EVENTS_PGFAULT]);
518 this_cpu_inc(memcg->stat->events[MEM_CGROUP_EVENTS_PGMAJFAULT]);
526 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
527 void mem_cgroup_split_huge_fixup(struct page *head);
530 #else /* CONFIG_MEMCG */
532 #define MEM_CGROUP_ID_SHIFT 0
533 #define MEM_CGROUP_ID_MAX 0
537 static inline bool mem_cgroup_disabled(void)
542 static inline void mem_cgroup_events(struct mem_cgroup *memcg,
543 enum mem_cgroup_events_index idx,
548 static inline bool mem_cgroup_low(struct mem_cgroup *root,
549 struct mem_cgroup *memcg)
554 static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm,
556 struct mem_cgroup **memcgp,
563 static inline void mem_cgroup_commit_charge(struct page *page,
564 struct mem_cgroup *memcg,
565 bool lrucare, bool compound)
569 static inline void mem_cgroup_cancel_charge(struct page *page,
570 struct mem_cgroup *memcg,
575 static inline void mem_cgroup_uncharge(struct page *page)
579 static inline void mem_cgroup_uncharge_list(struct list_head *page_list)
583 static inline void mem_cgroup_migrate(struct page *old, struct page *new)
587 static inline struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
588 struct mem_cgroup *memcg)
590 return &zone->lruvec;
593 static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
596 return &zone->lruvec;
599 static inline bool mm_match_cgroup(struct mm_struct *mm,
600 struct mem_cgroup *memcg)
605 static inline bool task_in_mem_cgroup(struct task_struct *task,
606 const struct mem_cgroup *memcg)
611 static inline struct mem_cgroup *
612 mem_cgroup_iter(struct mem_cgroup *root,
613 struct mem_cgroup *prev,
614 struct mem_cgroup_reclaim_cookie *reclaim)
619 static inline void mem_cgroup_iter_break(struct mem_cgroup *root,
620 struct mem_cgroup *prev)
624 static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg)
629 static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id)
632 /* XXX: This should always return root_mem_cgroup */
636 static inline bool mem_cgroup_online(struct mem_cgroup *memcg)
642 mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec)
647 static inline unsigned long
648 mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru)
654 mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru,
660 mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p)
664 static inline struct mem_cgroup *lock_page_memcg(struct page *page)
669 static inline void unlock_page_memcg(struct mem_cgroup *memcg)
673 static inline void mem_cgroup_handle_over_high(void)
677 static inline void mem_cgroup_oom_enable(void)
681 static inline void mem_cgroup_oom_disable(void)
685 static inline bool task_in_memcg_oom(struct task_struct *p)
690 static inline bool mem_cgroup_oom_synchronize(bool wait)
695 static inline void mem_cgroup_inc_page_stat(struct mem_cgroup *memcg,
696 enum mem_cgroup_stat_index idx)
700 static inline void mem_cgroup_dec_page_stat(struct mem_cgroup *memcg,
701 enum mem_cgroup_stat_index idx)
706 unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
708 unsigned long *total_scanned)
713 static inline void mem_cgroup_split_huge_fixup(struct page *head)
718 void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx)
721 #endif /* CONFIG_MEMCG */
723 #ifdef CONFIG_CGROUP_WRITEBACK
725 struct list_head *mem_cgroup_cgwb_list(struct mem_cgroup *memcg);
726 struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb);
727 void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages,
728 unsigned long *pheadroom, unsigned long *pdirty,
729 unsigned long *pwriteback);
731 #else /* CONFIG_CGROUP_WRITEBACK */
733 static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb)
738 static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb,
739 unsigned long *pfilepages,
740 unsigned long *pheadroom,
741 unsigned long *pdirty,
742 unsigned long *pwriteback)
746 #endif /* CONFIG_CGROUP_WRITEBACK */
749 void sock_update_memcg(struct sock *sk);
750 void sock_release_memcg(struct sock *sk);
751 bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages);
752 void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages);
754 extern struct static_key_false memcg_sockets_enabled_key;
755 #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key)
756 static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg)
758 if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure)
761 if (time_before(jiffies, memcg->socket_pressure))
763 } while ((memcg = parent_mem_cgroup(memcg)));
767 #define mem_cgroup_sockets_enabled 0
768 static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg)
774 #if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
775 extern struct static_key_false memcg_kmem_enabled_key;
777 extern int memcg_nr_cache_ids;
778 void memcg_get_cache_ids(void);
779 void memcg_put_cache_ids(void);
782 * Helper macro to loop through all memcg-specific caches. Callers must still
783 * check if the cache is valid (it is either valid or NULL).
784 * the slab_mutex must be held when looping through those caches
786 #define for_each_memcg_cache_index(_idx) \
787 for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++)
789 static inline bool memcg_kmem_enabled(void)
791 return static_branch_unlikely(&memcg_kmem_enabled_key);
794 static inline bool memcg_kmem_online(struct mem_cgroup *memcg)
796 return memcg->kmem_state == KMEM_ONLINE;
800 * In general, we'll do everything in our power to not incur in any overhead
801 * for non-memcg users for the kmem functions. Not even a function call, if we
804 * Therefore, we'll inline all those functions so that in the best case, we'll
805 * see that kmemcg is off for everybody and proceed quickly. If it is on,
806 * we'll still do most of the flag checking inline. We check a lot of
807 * conditions, but because they are pretty simple, they are expected to be
810 int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order,
811 struct mem_cgroup *memcg);
812 int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order);
813 void __memcg_kmem_uncharge(struct page *page, int order);
816 * helper for accessing a memcg's index. It will be used as an index in the
817 * child cache array in kmem_cache, and also to derive its name. This function
818 * will return -1 when this is not a kmem-limited memcg.
820 static inline int memcg_cache_id(struct mem_cgroup *memcg)
822 return memcg ? memcg->kmemcg_id : -1;
825 struct kmem_cache *__memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp);
826 void __memcg_kmem_put_cache(struct kmem_cache *cachep);
828 static inline bool __memcg_kmem_bypass(void)
830 if (!memcg_kmem_enabled())
832 if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD))
838 * memcg_kmem_charge: charge a kmem page
839 * @page: page to charge
841 * @order: allocation order
843 * Returns 0 on success, an error code on failure.
845 static __always_inline int memcg_kmem_charge(struct page *page,
846 gfp_t gfp, int order)
848 if (__memcg_kmem_bypass())
850 if (!(gfp & __GFP_ACCOUNT))
852 return __memcg_kmem_charge(page, gfp, order);
856 * memcg_kmem_uncharge: uncharge a kmem page
857 * @page: page to uncharge
858 * @order: allocation order
860 static __always_inline void memcg_kmem_uncharge(struct page *page, int order)
862 if (memcg_kmem_enabled())
863 __memcg_kmem_uncharge(page, order);
867 * memcg_kmem_get_cache: selects the correct per-memcg cache for allocation
868 * @cachep: the original global kmem cache
870 * All memory allocated from a per-memcg cache is charged to the owner memcg.
872 static __always_inline struct kmem_cache *
873 memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
875 if (__memcg_kmem_bypass())
877 return __memcg_kmem_get_cache(cachep, gfp);
880 static __always_inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
882 if (memcg_kmem_enabled())
883 __memcg_kmem_put_cache(cachep);
886 #define for_each_memcg_cache_index(_idx) \
889 static inline bool memcg_kmem_enabled(void)
894 static inline bool memcg_kmem_online(struct mem_cgroup *memcg)
899 static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order)
904 static inline void memcg_kmem_uncharge(struct page *page, int order)
908 static inline int memcg_cache_id(struct mem_cgroup *memcg)
913 static inline void memcg_get_cache_ids(void)
917 static inline void memcg_put_cache_ids(void)
921 static inline struct kmem_cache *
922 memcg_kmem_get_cache(struct kmem_cache *cachep, gfp_t gfp)
927 static inline void memcg_kmem_put_cache(struct kmem_cache *cachep)
930 #endif /* CONFIG_MEMCG && !CONFIG_SLOB */
932 #endif /* _LINUX_MEMCONTROL_H */