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c942fddf | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
8cdea7c0 BS |
2 | /* memcontrol.h - Memory Controller |
3 | * | |
4 | * Copyright IBM Corporation, 2007 | |
5 | * Author Balbir Singh <balbir@linux.vnet.ibm.com> | |
6 | * | |
78fb7466 PE |
7 | * Copyright 2007 OpenVZ SWsoft Inc |
8 | * Author: Pavel Emelianov <xemul@openvz.org> | |
8cdea7c0 BS |
9 | */ |
10 | ||
11 | #ifndef _LINUX_MEMCONTROL_H | |
12 | #define _LINUX_MEMCONTROL_H | |
f8d66542 | 13 | #include <linux/cgroup.h> |
456f998e | 14 | #include <linux/vm_event_item.h> |
7ae1e1d0 | 15 | #include <linux/hardirq.h> |
a8964b9b | 16 | #include <linux/jump_label.h> |
33398cf2 MH |
17 | #include <linux/page_counter.h> |
18 | #include <linux/vmpressure.h> | |
19 | #include <linux/eventfd.h> | |
00f3ca2c JW |
20 | #include <linux/mm.h> |
21 | #include <linux/vmstat.h> | |
33398cf2 | 22 | #include <linux/writeback.h> |
fdf1cdb9 | 23 | #include <linux/page-flags.h> |
456f998e | 24 | |
78fb7466 | 25 | struct mem_cgroup; |
8697d331 BS |
26 | struct page; |
27 | struct mm_struct; | |
2633d7a0 | 28 | struct kmem_cache; |
78fb7466 | 29 | |
71cd3113 JW |
30 | /* Cgroup-specific page state, on top of universal node page state */ |
31 | enum memcg_stat_item { | |
32 | MEMCG_CACHE = NR_VM_NODE_STAT_ITEMS, | |
33 | MEMCG_RSS, | |
34 | MEMCG_RSS_HUGE, | |
35 | MEMCG_SWAP, | |
36 | MEMCG_SOCK, | |
37 | /* XXX: why are these zone and not node counters? */ | |
38 | MEMCG_KERNEL_STACK_KB, | |
b2807f07 | 39 | MEMCG_NR_STAT, |
2a7106f2 GT |
40 | }; |
41 | ||
e27be240 JW |
42 | enum memcg_memory_event { |
43 | MEMCG_LOW, | |
71cd3113 JW |
44 | MEMCG_HIGH, |
45 | MEMCG_MAX, | |
46 | MEMCG_OOM, | |
fe6bdfc8 | 47 | MEMCG_OOM_KILL, |
f3a53a3a TH |
48 | MEMCG_SWAP_MAX, |
49 | MEMCG_SWAP_FAIL, | |
e27be240 | 50 | MEMCG_NR_MEMORY_EVENTS, |
71cd3113 JW |
51 | }; |
52 | ||
bf8d5d52 RG |
53 | enum mem_cgroup_protection { |
54 | MEMCG_PROT_NONE, | |
55 | MEMCG_PROT_LOW, | |
56 | MEMCG_PROT_MIN, | |
57 | }; | |
58 | ||
5660048c | 59 | struct mem_cgroup_reclaim_cookie { |
ef8f2327 | 60 | pg_data_t *pgdat; |
5660048c JW |
61 | int priority; |
62 | unsigned int generation; | |
63 | }; | |
64 | ||
71cd3113 JW |
65 | #ifdef CONFIG_MEMCG |
66 | ||
67 | #define MEM_CGROUP_ID_SHIFT 16 | |
68 | #define MEM_CGROUP_ID_MAX USHRT_MAX | |
69 | ||
70 | struct mem_cgroup_id { | |
71 | int id; | |
1c2d479a | 72 | refcount_t ref; |
71cd3113 JW |
73 | }; |
74 | ||
33398cf2 MH |
75 | /* |
76 | * Per memcg event counter is incremented at every pagein/pageout. With THP, | |
77 | * it will be incremated by the number of pages. This counter is used for | |
78 | * for trigger some periodic events. This is straightforward and better | |
79 | * than using jiffies etc. to handle periodic memcg event. | |
80 | */ | |
81 | enum mem_cgroup_events_target { | |
82 | MEM_CGROUP_TARGET_THRESH, | |
83 | MEM_CGROUP_TARGET_SOFTLIMIT, | |
84 | MEM_CGROUP_TARGET_NUMAINFO, | |
85 | MEM_CGROUP_NTARGETS, | |
86 | }; | |
87 | ||
871789d4 CD |
88 | struct memcg_vmstats_percpu { |
89 | long stat[MEMCG_NR_STAT]; | |
e27be240 | 90 | unsigned long events[NR_VM_EVENT_ITEMS]; |
33398cf2 MH |
91 | unsigned long nr_page_events; |
92 | unsigned long targets[MEM_CGROUP_NTARGETS]; | |
93 | }; | |
94 | ||
95 | struct mem_cgroup_reclaim_iter { | |
96 | struct mem_cgroup *position; | |
97 | /* scan generation, increased every round-trip */ | |
98 | unsigned int generation; | |
99 | }; | |
100 | ||
00f3ca2c JW |
101 | struct lruvec_stat { |
102 | long count[NR_VM_NODE_STAT_ITEMS]; | |
103 | }; | |
104 | ||
0a4465d3 KT |
105 | /* |
106 | * Bitmap of shrinker::id corresponding to memcg-aware shrinkers, | |
107 | * which have elements charged to this memcg. | |
108 | */ | |
109 | struct memcg_shrinker_map { | |
110 | struct rcu_head rcu; | |
111 | unsigned long map[0]; | |
112 | }; | |
113 | ||
33398cf2 MH |
114 | /* |
115 | * per-zone information in memory controller. | |
116 | */ | |
ef8f2327 | 117 | struct mem_cgroup_per_node { |
33398cf2 | 118 | struct lruvec lruvec; |
a983b5eb JW |
119 | |
120 | struct lruvec_stat __percpu *lruvec_stat_cpu; | |
121 | atomic_long_t lruvec_stat[NR_VM_NODE_STAT_ITEMS]; | |
42a30035 | 122 | atomic_long_t lruvec_stat_local[NR_VM_NODE_STAT_ITEMS]; |
a983b5eb | 123 | |
b4536f0c | 124 | unsigned long lru_zone_size[MAX_NR_ZONES][NR_LRU_LISTS]; |
33398cf2 MH |
125 | |
126 | struct mem_cgroup_reclaim_iter iter[DEF_PRIORITY + 1]; | |
127 | ||
0a4465d3 KT |
128 | #ifdef CONFIG_MEMCG_KMEM |
129 | struct memcg_shrinker_map __rcu *shrinker_map; | |
130 | #endif | |
33398cf2 MH |
131 | struct rb_node tree_node; /* RB tree node */ |
132 | unsigned long usage_in_excess;/* Set to the value by which */ | |
133 | /* the soft limit is exceeded*/ | |
134 | bool on_tree; | |
e3c1ac58 AR |
135 | bool congested; /* memcg has many dirty pages */ |
136 | /* backed by a congested BDI */ | |
137 | ||
33398cf2 MH |
138 | struct mem_cgroup *memcg; /* Back pointer, we cannot */ |
139 | /* use container_of */ | |
140 | }; | |
141 | ||
33398cf2 MH |
142 | struct mem_cgroup_threshold { |
143 | struct eventfd_ctx *eventfd; | |
144 | unsigned long threshold; | |
145 | }; | |
146 | ||
147 | /* For threshold */ | |
148 | struct mem_cgroup_threshold_ary { | |
149 | /* An array index points to threshold just below or equal to usage. */ | |
150 | int current_threshold; | |
151 | /* Size of entries[] */ | |
152 | unsigned int size; | |
153 | /* Array of thresholds */ | |
154 | struct mem_cgroup_threshold entries[0]; | |
155 | }; | |
156 | ||
157 | struct mem_cgroup_thresholds { | |
158 | /* Primary thresholds array */ | |
159 | struct mem_cgroup_threshold_ary *primary; | |
160 | /* | |
161 | * Spare threshold array. | |
162 | * This is needed to make mem_cgroup_unregister_event() "never fail". | |
163 | * It must be able to store at least primary->size - 1 entries. | |
164 | */ | |
165 | struct mem_cgroup_threshold_ary *spare; | |
166 | }; | |
167 | ||
567e9ab2 JW |
168 | enum memcg_kmem_state { |
169 | KMEM_NONE, | |
170 | KMEM_ALLOCATED, | |
171 | KMEM_ONLINE, | |
172 | }; | |
173 | ||
e81bf979 AL |
174 | #if defined(CONFIG_SMP) |
175 | struct memcg_padding { | |
176 | char x[0]; | |
177 | } ____cacheline_internodealigned_in_smp; | |
178 | #define MEMCG_PADDING(name) struct memcg_padding name; | |
179 | #else | |
180 | #define MEMCG_PADDING(name) | |
181 | #endif | |
182 | ||
33398cf2 MH |
183 | /* |
184 | * The memory controller data structure. The memory controller controls both | |
185 | * page cache and RSS per cgroup. We would eventually like to provide | |
186 | * statistics based on the statistics developed by Rik Van Riel for clock-pro, | |
187 | * to help the administrator determine what knobs to tune. | |
188 | */ | |
189 | struct mem_cgroup { | |
190 | struct cgroup_subsys_state css; | |
191 | ||
73f576c0 JW |
192 | /* Private memcg ID. Used to ID objects that outlive the cgroup */ |
193 | struct mem_cgroup_id id; | |
194 | ||
33398cf2 MH |
195 | /* Accounted resources */ |
196 | struct page_counter memory; | |
37e84351 | 197 | struct page_counter swap; |
0db15298 JW |
198 | |
199 | /* Legacy consumer-oriented counters */ | |
33398cf2 MH |
200 | struct page_counter memsw; |
201 | struct page_counter kmem; | |
0db15298 | 202 | struct page_counter tcpmem; |
33398cf2 | 203 | |
23067153 | 204 | /* Upper bound of normal memory consumption range */ |
33398cf2 MH |
205 | unsigned long high; |
206 | ||
f7e1cb6e JW |
207 | /* Range enforcement for interrupt charges */ |
208 | struct work_struct high_work; | |
209 | ||
33398cf2 MH |
210 | unsigned long soft_limit; |
211 | ||
212 | /* vmpressure notifications */ | |
213 | struct vmpressure vmpressure; | |
214 | ||
33398cf2 MH |
215 | /* |
216 | * Should the accounting and control be hierarchical, per subtree? | |
217 | */ | |
218 | bool use_hierarchy; | |
219 | ||
3d8b38eb RG |
220 | /* |
221 | * Should the OOM killer kill all belonging tasks, had it kill one? | |
222 | */ | |
223 | bool oom_group; | |
224 | ||
33398cf2 MH |
225 | /* protected by memcg_oom_lock */ |
226 | bool oom_lock; | |
227 | int under_oom; | |
228 | ||
229 | int swappiness; | |
230 | /* OOM-Killer disable */ | |
231 | int oom_kill_disable; | |
232 | ||
e27be240 | 233 | /* memory.events */ |
472912a2 TH |
234 | struct cgroup_file events_file; |
235 | ||
f3a53a3a TH |
236 | /* handle for "memory.swap.events" */ |
237 | struct cgroup_file swap_events_file; | |
238 | ||
33398cf2 MH |
239 | /* protect arrays of thresholds */ |
240 | struct mutex thresholds_lock; | |
241 | ||
242 | /* thresholds for memory usage. RCU-protected */ | |
243 | struct mem_cgroup_thresholds thresholds; | |
244 | ||
245 | /* thresholds for mem+swap usage. RCU-protected */ | |
246 | struct mem_cgroup_thresholds memsw_thresholds; | |
247 | ||
248 | /* For oom notifier event fd */ | |
249 | struct list_head oom_notify; | |
250 | ||
251 | /* | |
252 | * Should we move charges of a task when a task is moved into this | |
253 | * mem_cgroup ? And what type of charges should we move ? | |
254 | */ | |
255 | unsigned long move_charge_at_immigrate; | |
e81bf979 AL |
256 | /* taken only while moving_account > 0 */ |
257 | spinlock_t move_lock; | |
258 | unsigned long move_lock_flags; | |
259 | ||
260 | MEMCG_PADDING(_pad1_); | |
261 | ||
33398cf2 MH |
262 | /* |
263 | * set > 0 if pages under this cgroup are moving to other cgroup. | |
264 | */ | |
265 | atomic_t moving_account; | |
33398cf2 | 266 | struct task_struct *move_lock_task; |
a983b5eb | 267 | |
e27be240 | 268 | /* memory.stat */ |
871789d4 | 269 | struct memcg_vmstats_percpu __percpu *vmstats_percpu; |
e81bf979 AL |
270 | |
271 | MEMCG_PADDING(_pad2_); | |
272 | ||
871789d4 | 273 | atomic_long_t vmstats[MEMCG_NR_STAT]; |
42a30035 JW |
274 | atomic_long_t vmstats_local[MEMCG_NR_STAT]; |
275 | ||
871789d4 | 276 | atomic_long_t vmevents[NR_VM_EVENT_ITEMS]; |
42a30035 JW |
277 | atomic_long_t vmevents_local[NR_VM_EVENT_ITEMS]; |
278 | ||
279 | atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; | |
33398cf2 | 280 | |
d886f4e4 JW |
281 | unsigned long socket_pressure; |
282 | ||
283 | /* Legacy tcp memory accounting */ | |
0db15298 JW |
284 | bool tcpmem_active; |
285 | int tcpmem_pressure; | |
d886f4e4 | 286 | |
84c07d11 | 287 | #ifdef CONFIG_MEMCG_KMEM |
33398cf2 MH |
288 | /* Index in the kmem_cache->memcg_params.memcg_caches array */ |
289 | int kmemcg_id; | |
567e9ab2 | 290 | enum memcg_kmem_state kmem_state; |
bc2791f8 | 291 | struct list_head kmem_caches; |
33398cf2 MH |
292 | #endif |
293 | ||
294 | int last_scanned_node; | |
295 | #if MAX_NUMNODES > 1 | |
296 | nodemask_t scan_nodes; | |
297 | atomic_t numainfo_events; | |
298 | atomic_t numainfo_updating; | |
299 | #endif | |
300 | ||
301 | #ifdef CONFIG_CGROUP_WRITEBACK | |
302 | struct list_head cgwb_list; | |
303 | struct wb_domain cgwb_domain; | |
304 | #endif | |
305 | ||
306 | /* List of events which userspace want to receive */ | |
307 | struct list_head event_list; | |
308 | spinlock_t event_list_lock; | |
309 | ||
310 | struct mem_cgroup_per_node *nodeinfo[0]; | |
311 | /* WARNING: nodeinfo must be the last member here */ | |
312 | }; | |
7d828602 | 313 | |
a983b5eb JW |
314 | /* |
315 | * size of first charge trial. "32" comes from vmscan.c's magic value. | |
316 | * TODO: maybe necessary to use big numbers in big irons. | |
317 | */ | |
318 | #define MEMCG_CHARGE_BATCH 32U | |
319 | ||
7d828602 | 320 | extern struct mem_cgroup *root_mem_cgroup; |
56161634 | 321 | |
dfd2f10c KT |
322 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
323 | { | |
324 | return (memcg == root_mem_cgroup); | |
325 | } | |
326 | ||
23047a96 JW |
327 | static inline bool mem_cgroup_disabled(void) |
328 | { | |
329 | return !cgroup_subsys_enabled(memory_cgrp_subsys); | |
330 | } | |
331 | ||
bf8d5d52 RG |
332 | enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root, |
333 | struct mem_cgroup *memcg); | |
241994ed | 334 | |
00501b53 | 335 | int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
f627c2f5 KS |
336 | gfp_t gfp_mask, struct mem_cgroup **memcgp, |
337 | bool compound); | |
2cf85583 TH |
338 | int mem_cgroup_try_charge_delay(struct page *page, struct mm_struct *mm, |
339 | gfp_t gfp_mask, struct mem_cgroup **memcgp, | |
340 | bool compound); | |
00501b53 | 341 | void mem_cgroup_commit_charge(struct page *page, struct mem_cgroup *memcg, |
f627c2f5 KS |
342 | bool lrucare, bool compound); |
343 | void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, | |
344 | bool compound); | |
0a31bc97 | 345 | void mem_cgroup_uncharge(struct page *page); |
747db954 | 346 | void mem_cgroup_uncharge_list(struct list_head *page_list); |
569b846d | 347 | |
6a93ca8f | 348 | void mem_cgroup_migrate(struct page *oldpage, struct page *newpage); |
569b846d | 349 | |
ef8f2327 MG |
350 | static struct mem_cgroup_per_node * |
351 | mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) | |
55779ec7 | 352 | { |
ef8f2327 | 353 | return memcg->nodeinfo[nid]; |
55779ec7 JW |
354 | } |
355 | ||
356 | /** | |
a9dd0a83 MG |
357 | * mem_cgroup_lruvec - get the lru list vector for a node or a memcg zone |
358 | * @node: node of the wanted lruvec | |
55779ec7 JW |
359 | * @memcg: memcg of the wanted lruvec |
360 | * | |
a9dd0a83 MG |
361 | * Returns the lru list vector holding pages for a given @node or a given |
362 | * @memcg and @zone. This can be the node lruvec, if the memory controller | |
55779ec7 JW |
363 | * is disabled. |
364 | */ | |
a9dd0a83 | 365 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 366 | struct mem_cgroup *memcg) |
55779ec7 | 367 | { |
ef8f2327 | 368 | struct mem_cgroup_per_node *mz; |
55779ec7 JW |
369 | struct lruvec *lruvec; |
370 | ||
371 | if (mem_cgroup_disabled()) { | |
a9dd0a83 | 372 | lruvec = node_lruvec(pgdat); |
55779ec7 JW |
373 | goto out; |
374 | } | |
375 | ||
ef8f2327 | 376 | mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id); |
55779ec7 JW |
377 | lruvec = &mz->lruvec; |
378 | out: | |
379 | /* | |
380 | * Since a node can be onlined after the mem_cgroup was created, | |
599d0c95 | 381 | * we have to be prepared to initialize lruvec->pgdat here; |
55779ec7 JW |
382 | * and if offlined then reonlined, we need to reinitialize it. |
383 | */ | |
ef8f2327 MG |
384 | if (unlikely(lruvec->pgdat != pgdat)) |
385 | lruvec->pgdat = pgdat; | |
55779ec7 JW |
386 | return lruvec; |
387 | } | |
388 | ||
599d0c95 | 389 | struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *); |
c9b0ed51 | 390 | |
2314b42d | 391 | bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg); |
64219994 | 392 | struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
e993d905 | 393 | |
d46eb14b SB |
394 | struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); |
395 | ||
f745c6f5 SB |
396 | struct mem_cgroup *get_mem_cgroup_from_page(struct page *page); |
397 | ||
33398cf2 MH |
398 | static inline |
399 | struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ | |
400 | return css ? container_of(css, struct mem_cgroup, css) : NULL; | |
401 | } | |
402 | ||
dc0b5864 RG |
403 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
404 | { | |
d46eb14b SB |
405 | if (memcg) |
406 | css_put(&memcg->css); | |
dc0b5864 RG |
407 | } |
408 | ||
8e8ae645 JW |
409 | #define mem_cgroup_from_counter(counter, member) \ |
410 | container_of(counter, struct mem_cgroup, member) | |
411 | ||
33398cf2 MH |
412 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
413 | struct mem_cgroup *, | |
414 | struct mem_cgroup_reclaim_cookie *); | |
415 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); | |
7c5f64f8 VD |
416 | int mem_cgroup_scan_tasks(struct mem_cgroup *, |
417 | int (*)(struct task_struct *, void *), void *); | |
33398cf2 | 418 | |
23047a96 JW |
419 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
420 | { | |
421 | if (mem_cgroup_disabled()) | |
422 | return 0; | |
423 | ||
73f576c0 | 424 | return memcg->id.id; |
23047a96 | 425 | } |
73f576c0 | 426 | struct mem_cgroup *mem_cgroup_from_id(unsigned short id); |
23047a96 | 427 | |
aa9694bb CD |
428 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
429 | { | |
430 | return mem_cgroup_from_css(seq_css(m)); | |
431 | } | |
432 | ||
2262185c RG |
433 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
434 | { | |
435 | struct mem_cgroup_per_node *mz; | |
436 | ||
437 | if (mem_cgroup_disabled()) | |
438 | return NULL; | |
439 | ||
440 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
441 | return mz->memcg; | |
442 | } | |
443 | ||
8e8ae645 JW |
444 | /** |
445 | * parent_mem_cgroup - find the accounting parent of a memcg | |
446 | * @memcg: memcg whose parent to find | |
447 | * | |
448 | * Returns the parent memcg, or NULL if this is the root or the memory | |
449 | * controller is in legacy no-hierarchy mode. | |
450 | */ | |
451 | static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) | |
452 | { | |
453 | if (!memcg->memory.parent) | |
454 | return NULL; | |
455 | return mem_cgroup_from_counter(memcg->memory.parent, memory); | |
456 | } | |
457 | ||
33398cf2 MH |
458 | static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg, |
459 | struct mem_cgroup *root) | |
460 | { | |
461 | if (root == memcg) | |
462 | return true; | |
463 | if (!root->use_hierarchy) | |
464 | return false; | |
465 | return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup); | |
466 | } | |
e1aab161 | 467 | |
2314b42d JW |
468 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
469 | struct mem_cgroup *memcg) | |
2e4d4091 | 470 | { |
587af308 | 471 | struct mem_cgroup *task_memcg; |
413918bb | 472 | bool match = false; |
c3ac9a8a | 473 | |
2e4d4091 | 474 | rcu_read_lock(); |
587af308 | 475 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
413918bb | 476 | if (task_memcg) |
2314b42d | 477 | match = mem_cgroup_is_descendant(task_memcg, memcg); |
2e4d4091 | 478 | rcu_read_unlock(); |
c3ac9a8a | 479 | return match; |
2e4d4091 | 480 | } |
8a9f3ccd | 481 | |
64219994 | 482 | struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page); |
2fc04524 | 483 | ino_t page_cgroup_ino(struct page *page); |
d324236b | 484 | |
eb01aaab VD |
485 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
486 | { | |
487 | if (mem_cgroup_disabled()) | |
488 | return true; | |
489 | return !!(memcg->css.flags & CSS_ONLINE); | |
490 | } | |
491 | ||
58ae83db KH |
492 | /* |
493 | * For memory reclaim. | |
494 | */ | |
889976db | 495 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
33398cf2 MH |
496 | |
497 | void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, | |
b4536f0c | 498 | int zid, int nr_pages); |
33398cf2 | 499 | |
b4536f0c MH |
500 | static inline |
501 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
502 | enum lru_list lru, int zone_idx) | |
503 | { | |
504 | struct mem_cgroup_per_node *mz; | |
505 | ||
506 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
507 | return mz->lru_zone_size[zone_idx][lru]; | |
33398cf2 MH |
508 | } |
509 | ||
b23afb93 TH |
510 | void mem_cgroup_handle_over_high(void); |
511 | ||
bbec2e15 | 512 | unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); |
7c5f64f8 | 513 | |
f0c867d9 | 514 | void mem_cgroup_print_oom_context(struct mem_cgroup *memcg, |
64219994 | 515 | struct task_struct *p); |
58ae83db | 516 | |
f0c867d9 | 517 | void mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg); |
518 | ||
29ef680a | 519 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 | 520 | { |
29ef680a MH |
521 | WARN_ON(current->in_user_fault); |
522 | current->in_user_fault = 1; | |
519e5247 JW |
523 | } |
524 | ||
29ef680a | 525 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 | 526 | { |
29ef680a MH |
527 | WARN_ON(!current->in_user_fault); |
528 | current->in_user_fault = 0; | |
519e5247 JW |
529 | } |
530 | ||
3812c8c8 JW |
531 | static inline bool task_in_memcg_oom(struct task_struct *p) |
532 | { | |
626ebc41 | 533 | return p->memcg_in_oom; |
3812c8c8 JW |
534 | } |
535 | ||
49426420 | 536 | bool mem_cgroup_oom_synchronize(bool wait); |
3d8b38eb RG |
537 | struct mem_cgroup *mem_cgroup_get_oom_group(struct task_struct *victim, |
538 | struct mem_cgroup *oom_domain); | |
539 | void mem_cgroup_print_oom_group(struct mem_cgroup *memcg); | |
3812c8c8 | 540 | |
c255a458 | 541 | #ifdef CONFIG_MEMCG_SWAP |
c077719b KH |
542 | extern int do_swap_account; |
543 | #endif | |
f8d66542 | 544 | |
739f79fc JW |
545 | struct mem_cgroup *lock_page_memcg(struct page *page); |
546 | void __unlock_page_memcg(struct mem_cgroup *memcg); | |
62cccb8c | 547 | void unlock_page_memcg(struct page *page); |
d7365e78 | 548 | |
42a30035 JW |
549 | /* |
550 | * idx can be of type enum memcg_stat_item or node_stat_item. | |
551 | * Keep in sync with memcg_exact_page_state(). | |
552 | */ | |
553 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) | |
554 | { | |
555 | long x = atomic_long_read(&memcg->vmstats[idx]); | |
556 | #ifdef CONFIG_SMP | |
557 | if (x < 0) | |
558 | x = 0; | |
559 | #endif | |
560 | return x; | |
561 | } | |
562 | ||
0b3d6e6f GT |
563 | /* |
564 | * idx can be of type enum memcg_stat_item or node_stat_item. | |
565 | * Keep in sync with memcg_exact_page_state(). | |
566 | */ | |
205b20cc JW |
567 | static inline unsigned long memcg_page_state_local(struct mem_cgroup *memcg, |
568 | int idx) | |
2a2e4885 | 569 | { |
42a30035 | 570 | long x = atomic_long_read(&memcg->vmstats_local[idx]); |
a983b5eb JW |
571 | #ifdef CONFIG_SMP |
572 | if (x < 0) | |
573 | x = 0; | |
574 | #endif | |
575 | return x; | |
2a2e4885 JW |
576 | } |
577 | ||
db9adbcb | 578 | void __mod_memcg_state(struct mem_cgroup *memcg, int idx, int val); |
2a2e4885 | 579 | |
04fecbf5 | 580 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 581 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 582 | int idx, int val) |
2a2e4885 | 583 | { |
c3cc3911 JW |
584 | unsigned long flags; |
585 | ||
586 | local_irq_save(flags); | |
a983b5eb | 587 | __mod_memcg_state(memcg, idx, val); |
c3cc3911 | 588 | local_irq_restore(flags); |
2a2e4885 JW |
589 | } |
590 | ||
33398cf2 | 591 | /** |
ccda7f43 | 592 | * mod_memcg_page_state - update page state statistics |
62cccb8c | 593 | * @page: the page |
33398cf2 MH |
594 | * @idx: page state item to account |
595 | * @val: number of pages (positive or negative) | |
596 | * | |
fdf1cdb9 JW |
597 | * The @page must be locked or the caller must use lock_page_memcg() |
598 | * to prevent double accounting when the page is concurrently being | |
599 | * moved to another memcg: | |
81f8c3a4 | 600 | * |
fdf1cdb9 | 601 | * lock_page(page) or lock_page_memcg(page) |
81f8c3a4 | 602 | * if (TestClearPageState(page)) |
ccda7f43 | 603 | * mod_memcg_page_state(page, state, -1); |
fdf1cdb9 | 604 | * unlock_page(page) or unlock_page_memcg(page) |
2a2e4885 JW |
605 | * |
606 | * Kernel pages are an exception to this, since they'll never move. | |
33398cf2 | 607 | */ |
00f3ca2c | 608 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 609 | int idx, int val) |
00f3ca2c JW |
610 | { |
611 | if (page->mem_cgroup) | |
612 | __mod_memcg_state(page->mem_cgroup, idx, val); | |
613 | } | |
614 | ||
ccda7f43 | 615 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 616 | int idx, int val) |
33398cf2 | 617 | { |
62cccb8c | 618 | if (page->mem_cgroup) |
ccda7f43 | 619 | mod_memcg_state(page->mem_cgroup, idx, val); |
33398cf2 MH |
620 | } |
621 | ||
42a30035 JW |
622 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
623 | enum node_stat_item idx) | |
624 | { | |
625 | struct mem_cgroup_per_node *pn; | |
626 | long x; | |
627 | ||
628 | if (mem_cgroup_disabled()) | |
629 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
630 | ||
631 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
632 | x = atomic_long_read(&pn->lruvec_stat[idx]); | |
633 | #ifdef CONFIG_SMP | |
634 | if (x < 0) | |
635 | x = 0; | |
636 | #endif | |
637 | return x; | |
638 | } | |
639 | ||
205b20cc JW |
640 | static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec, |
641 | enum node_stat_item idx) | |
2a7106f2 | 642 | { |
00f3ca2c | 643 | struct mem_cgroup_per_node *pn; |
a983b5eb | 644 | long x; |
00f3ca2c JW |
645 | |
646 | if (mem_cgroup_disabled()) | |
647 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
648 | ||
649 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
42a30035 | 650 | x = atomic_long_read(&pn->lruvec_stat_local[idx]); |
a983b5eb JW |
651 | #ifdef CONFIG_SMP |
652 | if (x < 0) | |
653 | x = 0; | |
654 | #endif | |
655 | return x; | |
2a7106f2 GT |
656 | } |
657 | ||
db9adbcb JW |
658 | void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, |
659 | int val); | |
00f3ca2c JW |
660 | |
661 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
662 | enum node_stat_item idx, int val) | |
663 | { | |
c3cc3911 JW |
664 | unsigned long flags; |
665 | ||
666 | local_irq_save(flags); | |
28454265 | 667 | __mod_lruvec_state(lruvec, idx, val); |
c3cc3911 | 668 | local_irq_restore(flags); |
00f3ca2c JW |
669 | } |
670 | ||
671 | static inline void __mod_lruvec_page_state(struct page *page, | |
672 | enum node_stat_item idx, int val) | |
673 | { | |
28454265 JW |
674 | pg_data_t *pgdat = page_pgdat(page); |
675 | struct lruvec *lruvec; | |
00f3ca2c | 676 | |
28454265 JW |
677 | /* Untracked pages have no memcg, no lruvec. Update only the node */ |
678 | if (!page->mem_cgroup) { | |
679 | __mod_node_page_state(pgdat, idx, val); | |
00f3ca2c | 680 | return; |
28454265 JW |
681 | } |
682 | ||
683 | lruvec = mem_cgroup_lruvec(pgdat, page->mem_cgroup); | |
684 | __mod_lruvec_state(lruvec, idx, val); | |
00f3ca2c JW |
685 | } |
686 | ||
687 | static inline void mod_lruvec_page_state(struct page *page, | |
688 | enum node_stat_item idx, int val) | |
689 | { | |
c3cc3911 JW |
690 | unsigned long flags; |
691 | ||
692 | local_irq_save(flags); | |
28454265 | 693 | __mod_lruvec_page_state(page, idx, val); |
c3cc3911 | 694 | local_irq_restore(flags); |
2a7106f2 GT |
695 | } |
696 | ||
ef8f2327 | 697 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
698 | gfp_t gfp_mask, |
699 | unsigned long *total_scanned); | |
a63d83f4 | 700 | |
db9adbcb JW |
701 | void __count_memcg_events(struct mem_cgroup *memcg, enum vm_event_item idx, |
702 | unsigned long count); | |
c9019e9b | 703 | |
2262185c | 704 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
705 | enum vm_event_item idx, |
706 | unsigned long count) | |
2262185c | 707 | { |
c3cc3911 JW |
708 | unsigned long flags; |
709 | ||
710 | local_irq_save(flags); | |
a983b5eb | 711 | __count_memcg_events(memcg, idx, count); |
c3cc3911 | 712 | local_irq_restore(flags); |
2262185c RG |
713 | } |
714 | ||
715 | static inline void count_memcg_page_event(struct page *page, | |
e27be240 | 716 | enum vm_event_item idx) |
2262185c RG |
717 | { |
718 | if (page->mem_cgroup) | |
719 | count_memcg_events(page->mem_cgroup, idx, 1); | |
720 | } | |
721 | ||
722 | static inline void count_memcg_event_mm(struct mm_struct *mm, | |
723 | enum vm_event_item idx) | |
68ae564b | 724 | { |
33398cf2 MH |
725 | struct mem_cgroup *memcg; |
726 | ||
68ae564b DR |
727 | if (mem_cgroup_disabled()) |
728 | return; | |
33398cf2 MH |
729 | |
730 | rcu_read_lock(); | |
731 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
fe6bdfc8 | 732 | if (likely(memcg)) |
c9019e9b | 733 | count_memcg_events(memcg, idx, 1); |
33398cf2 | 734 | rcu_read_unlock(); |
68ae564b | 735 | } |
c9019e9b | 736 | |
e27be240 JW |
737 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
738 | enum memcg_memory_event event) | |
c9019e9b | 739 | { |
e27be240 | 740 | atomic_long_inc(&memcg->memory_events[event]); |
c9019e9b JW |
741 | cgroup_file_notify(&memcg->events_file); |
742 | } | |
743 | ||
fe6bdfc8 RG |
744 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
745 | enum memcg_memory_event event) | |
746 | { | |
747 | struct mem_cgroup *memcg; | |
748 | ||
749 | if (mem_cgroup_disabled()) | |
750 | return; | |
751 | ||
752 | rcu_read_lock(); | |
753 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
754 | if (likely(memcg)) | |
755 | memcg_memory_event(memcg, event); | |
756 | rcu_read_unlock(); | |
757 | } | |
758 | ||
ca3e0214 | 759 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e94c8a9c | 760 | void mem_cgroup_split_huge_fixup(struct page *head); |
ca3e0214 KH |
761 | #endif |
762 | ||
c255a458 | 763 | #else /* CONFIG_MEMCG */ |
23047a96 JW |
764 | |
765 | #define MEM_CGROUP_ID_SHIFT 0 | |
766 | #define MEM_CGROUP_ID_MAX 0 | |
767 | ||
7a81b88c KH |
768 | struct mem_cgroup; |
769 | ||
dfd2f10c KT |
770 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
771 | { | |
772 | return true; | |
773 | } | |
774 | ||
23047a96 JW |
775 | static inline bool mem_cgroup_disabled(void) |
776 | { | |
777 | return true; | |
778 | } | |
779 | ||
e27be240 JW |
780 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
781 | enum memcg_memory_event event) | |
241994ed JW |
782 | { |
783 | } | |
784 | ||
fe6bdfc8 RG |
785 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
786 | enum memcg_memory_event event) | |
787 | { | |
788 | } | |
789 | ||
bf8d5d52 RG |
790 | static inline enum mem_cgroup_protection mem_cgroup_protected( |
791 | struct mem_cgroup *root, struct mem_cgroup *memcg) | |
241994ed | 792 | { |
bf8d5d52 | 793 | return MEMCG_PROT_NONE; |
241994ed JW |
794 | } |
795 | ||
00501b53 JW |
796 | static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
797 | gfp_t gfp_mask, | |
f627c2f5 KS |
798 | struct mem_cgroup **memcgp, |
799 | bool compound) | |
7a81b88c | 800 | { |
00501b53 | 801 | *memcgp = NULL; |
7a81b88c KH |
802 | return 0; |
803 | } | |
804 | ||
2cf85583 TH |
805 | static inline int mem_cgroup_try_charge_delay(struct page *page, |
806 | struct mm_struct *mm, | |
807 | gfp_t gfp_mask, | |
808 | struct mem_cgroup **memcgp, | |
809 | bool compound) | |
810 | { | |
811 | *memcgp = NULL; | |
812 | return 0; | |
813 | } | |
814 | ||
00501b53 JW |
815 | static inline void mem_cgroup_commit_charge(struct page *page, |
816 | struct mem_cgroup *memcg, | |
f627c2f5 | 817 | bool lrucare, bool compound) |
7a81b88c KH |
818 | { |
819 | } | |
820 | ||
00501b53 | 821 | static inline void mem_cgroup_cancel_charge(struct page *page, |
f627c2f5 KS |
822 | struct mem_cgroup *memcg, |
823 | bool compound) | |
7a81b88c KH |
824 | { |
825 | } | |
826 | ||
0a31bc97 | 827 | static inline void mem_cgroup_uncharge(struct page *page) |
569b846d KH |
828 | { |
829 | } | |
830 | ||
747db954 | 831 | static inline void mem_cgroup_uncharge_list(struct list_head *page_list) |
8a9f3ccd BS |
832 | { |
833 | } | |
834 | ||
6a93ca8f | 835 | static inline void mem_cgroup_migrate(struct page *old, struct page *new) |
69029cd5 KH |
836 | { |
837 | } | |
838 | ||
a9dd0a83 | 839 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 840 | struct mem_cgroup *memcg) |
08e552c6 | 841 | { |
a9dd0a83 | 842 | return node_lruvec(pgdat); |
08e552c6 KH |
843 | } |
844 | ||
fa9add64 | 845 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
599d0c95 | 846 | struct pglist_data *pgdat) |
66e1707b | 847 | { |
599d0c95 | 848 | return &pgdat->lruvec; |
66e1707b BS |
849 | } |
850 | ||
587af308 | 851 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
c0ff4b85 | 852 | struct mem_cgroup *memcg) |
bed7161a | 853 | { |
587af308 | 854 | return true; |
bed7161a BS |
855 | } |
856 | ||
ffbdccf5 DR |
857 | static inline bool task_in_mem_cgroup(struct task_struct *task, |
858 | const struct mem_cgroup *memcg) | |
4c4a2214 | 859 | { |
ffbdccf5 | 860 | return true; |
4c4a2214 DR |
861 | } |
862 | ||
d46eb14b SB |
863 | static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) |
864 | { | |
865 | return NULL; | |
866 | } | |
867 | ||
f745c6f5 SB |
868 | static inline struct mem_cgroup *get_mem_cgroup_from_page(struct page *page) |
869 | { | |
870 | return NULL; | |
871 | } | |
872 | ||
dc0b5864 RG |
873 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
874 | { | |
875 | } | |
876 | ||
5660048c JW |
877 | static inline struct mem_cgroup * |
878 | mem_cgroup_iter(struct mem_cgroup *root, | |
879 | struct mem_cgroup *prev, | |
880 | struct mem_cgroup_reclaim_cookie *reclaim) | |
881 | { | |
882 | return NULL; | |
883 | } | |
884 | ||
885 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, | |
886 | struct mem_cgroup *prev) | |
887 | { | |
888 | } | |
889 | ||
7c5f64f8 VD |
890 | static inline int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, |
891 | int (*fn)(struct task_struct *, void *), void *arg) | |
892 | { | |
893 | return 0; | |
894 | } | |
895 | ||
23047a96 | 896 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
f8d66542 | 897 | { |
23047a96 JW |
898 | return 0; |
899 | } | |
900 | ||
901 | static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id) | |
902 | { | |
903 | WARN_ON_ONCE(id); | |
904 | /* XXX: This should always return root_mem_cgroup */ | |
905 | return NULL; | |
f8d66542 | 906 | } |
a636b327 | 907 | |
aa9694bb CD |
908 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
909 | { | |
910 | return NULL; | |
911 | } | |
912 | ||
2262185c RG |
913 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
914 | { | |
915 | return NULL; | |
916 | } | |
917 | ||
eb01aaab | 918 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
14797e23 | 919 | { |
13308ca9 | 920 | return true; |
14797e23 KM |
921 | } |
922 | ||
b4536f0c MH |
923 | static inline |
924 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
925 | enum lru_list lru, int zone_idx) | |
926 | { | |
927 | return 0; | |
928 | } | |
a3d8e054 | 929 | |
bbec2e15 | 930 | static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) |
7c5f64f8 VD |
931 | { |
932 | return 0; | |
933 | } | |
934 | ||
e222432b | 935 | static inline void |
f0c867d9 | 936 | mem_cgroup_print_oom_context(struct mem_cgroup *memcg, struct task_struct *p) |
937 | { | |
938 | } | |
939 | ||
940 | static inline void | |
941 | mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg) | |
e222432b BS |
942 | { |
943 | } | |
944 | ||
739f79fc JW |
945 | static inline struct mem_cgroup *lock_page_memcg(struct page *page) |
946 | { | |
947 | return NULL; | |
948 | } | |
949 | ||
950 | static inline void __unlock_page_memcg(struct mem_cgroup *memcg) | |
89c06bd5 KH |
951 | { |
952 | } | |
953 | ||
62cccb8c | 954 | static inline void unlock_page_memcg(struct page *page) |
89c06bd5 KH |
955 | { |
956 | } | |
957 | ||
b23afb93 TH |
958 | static inline void mem_cgroup_handle_over_high(void) |
959 | { | |
960 | } | |
961 | ||
29ef680a | 962 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 JW |
963 | { |
964 | } | |
965 | ||
29ef680a | 966 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 JW |
967 | { |
968 | } | |
969 | ||
3812c8c8 JW |
970 | static inline bool task_in_memcg_oom(struct task_struct *p) |
971 | { | |
972 | return false; | |
973 | } | |
974 | ||
49426420 | 975 | static inline bool mem_cgroup_oom_synchronize(bool wait) |
3812c8c8 JW |
976 | { |
977 | return false; | |
978 | } | |
979 | ||
3d8b38eb RG |
980 | static inline struct mem_cgroup *mem_cgroup_get_oom_group( |
981 | struct task_struct *victim, struct mem_cgroup *oom_domain) | |
982 | { | |
983 | return NULL; | |
984 | } | |
985 | ||
986 | static inline void mem_cgroup_print_oom_group(struct mem_cgroup *memcg) | |
987 | { | |
988 | } | |
989 | ||
42a30035 JW |
990 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) |
991 | { | |
992 | return 0; | |
993 | } | |
994 | ||
205b20cc JW |
995 | static inline unsigned long memcg_page_state_local(struct mem_cgroup *memcg, |
996 | int idx) | |
2a2e4885 JW |
997 | { |
998 | return 0; | |
999 | } | |
1000 | ||
00f3ca2c | 1001 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1002 | int idx, |
00f3ca2c | 1003 | int nr) |
2a2e4885 JW |
1004 | { |
1005 | } | |
1006 | ||
00f3ca2c | 1007 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1008 | int idx, |
00f3ca2c | 1009 | int nr) |
2a2e4885 JW |
1010 | { |
1011 | } | |
1012 | ||
00f3ca2c | 1013 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 1014 | int idx, |
00f3ca2c | 1015 | int nr) |
2a2e4885 JW |
1016 | { |
1017 | } | |
1018 | ||
ccda7f43 | 1019 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 1020 | int idx, |
ccda7f43 | 1021 | int nr) |
553af430 JW |
1022 | { |
1023 | } | |
1024 | ||
42a30035 JW |
1025 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
1026 | enum node_stat_item idx) | |
1027 | { | |
1028 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
1029 | } | |
1030 | ||
205b20cc JW |
1031 | static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec, |
1032 | enum node_stat_item idx) | |
2a7106f2 | 1033 | { |
00f3ca2c | 1034 | return node_page_state(lruvec_pgdat(lruvec), idx); |
2a7106f2 GT |
1035 | } |
1036 | ||
00f3ca2c JW |
1037 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
1038 | enum node_stat_item idx, int val) | |
d69b042f | 1039 | { |
00f3ca2c JW |
1040 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
1041 | } | |
1042 | ||
1043 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
1044 | enum node_stat_item idx, int val) | |
1045 | { | |
1046 | mod_node_page_state(lruvec_pgdat(lruvec), idx, val); | |
1047 | } | |
1048 | ||
1049 | static inline void __mod_lruvec_page_state(struct page *page, | |
1050 | enum node_stat_item idx, int val) | |
1051 | { | |
1052 | __mod_node_page_state(page_pgdat(page), idx, val); | |
1053 | } | |
1054 | ||
1055 | static inline void mod_lruvec_page_state(struct page *page, | |
1056 | enum node_stat_item idx, int val) | |
1057 | { | |
1058 | mod_node_page_state(page_pgdat(page), idx, val); | |
d69b042f BS |
1059 | } |
1060 | ||
4e416953 | 1061 | static inline |
ef8f2327 | 1062 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
1063 | gfp_t gfp_mask, |
1064 | unsigned long *total_scanned) | |
4e416953 | 1065 | { |
0608f43d | 1066 | return 0; |
4e416953 BS |
1067 | } |
1068 | ||
e94c8a9c | 1069 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
ca3e0214 KH |
1070 | { |
1071 | } | |
1072 | ||
2262185c RG |
1073 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
1074 | enum vm_event_item idx, | |
1075 | unsigned long count) | |
1076 | { | |
1077 | } | |
1078 | ||
9851ac13 KT |
1079 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
1080 | enum vm_event_item idx, | |
1081 | unsigned long count) | |
1082 | { | |
1083 | } | |
1084 | ||
2262185c | 1085 | static inline void count_memcg_page_event(struct page *page, |
04fecbf5 | 1086 | int idx) |
2262185c RG |
1087 | { |
1088 | } | |
1089 | ||
456f998e | 1090 | static inline |
2262185c | 1091 | void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) |
456f998e YH |
1092 | { |
1093 | } | |
c255a458 | 1094 | #endif /* CONFIG_MEMCG */ |
78fb7466 | 1095 | |
04fecbf5 | 1096 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1097 | static inline void __inc_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1098 | int idx) |
00f3ca2c JW |
1099 | { |
1100 | __mod_memcg_state(memcg, idx, 1); | |
1101 | } | |
1102 | ||
04fecbf5 | 1103 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1104 | static inline void __dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1105 | int idx) |
00f3ca2c JW |
1106 | { |
1107 | __mod_memcg_state(memcg, idx, -1); | |
1108 | } | |
1109 | ||
04fecbf5 | 1110 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1111 | static inline void __inc_memcg_page_state(struct page *page, |
04fecbf5 | 1112 | int idx) |
00f3ca2c JW |
1113 | { |
1114 | __mod_memcg_page_state(page, idx, 1); | |
1115 | } | |
1116 | ||
04fecbf5 | 1117 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1118 | static inline void __dec_memcg_page_state(struct page *page, |
04fecbf5 | 1119 | int idx) |
00f3ca2c JW |
1120 | { |
1121 | __mod_memcg_page_state(page, idx, -1); | |
1122 | } | |
1123 | ||
1124 | static inline void __inc_lruvec_state(struct lruvec *lruvec, | |
1125 | enum node_stat_item idx) | |
1126 | { | |
1127 | __mod_lruvec_state(lruvec, idx, 1); | |
1128 | } | |
1129 | ||
1130 | static inline void __dec_lruvec_state(struct lruvec *lruvec, | |
1131 | enum node_stat_item idx) | |
1132 | { | |
1133 | __mod_lruvec_state(lruvec, idx, -1); | |
1134 | } | |
1135 | ||
1136 | static inline void __inc_lruvec_page_state(struct page *page, | |
1137 | enum node_stat_item idx) | |
1138 | { | |
1139 | __mod_lruvec_page_state(page, idx, 1); | |
1140 | } | |
1141 | ||
1142 | static inline void __dec_lruvec_page_state(struct page *page, | |
1143 | enum node_stat_item idx) | |
1144 | { | |
1145 | __mod_lruvec_page_state(page, idx, -1); | |
1146 | } | |
1147 | ||
04fecbf5 | 1148 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1149 | static inline void inc_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1150 | int idx) |
00f3ca2c JW |
1151 | { |
1152 | mod_memcg_state(memcg, idx, 1); | |
1153 | } | |
1154 | ||
04fecbf5 | 1155 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1156 | static inline void dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1157 | int idx) |
00f3ca2c JW |
1158 | { |
1159 | mod_memcg_state(memcg, idx, -1); | |
1160 | } | |
1161 | ||
04fecbf5 | 1162 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1163 | static inline void inc_memcg_page_state(struct page *page, |
04fecbf5 | 1164 | int idx) |
00f3ca2c JW |
1165 | { |
1166 | mod_memcg_page_state(page, idx, 1); | |
1167 | } | |
1168 | ||
04fecbf5 | 1169 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1170 | static inline void dec_memcg_page_state(struct page *page, |
04fecbf5 | 1171 | int idx) |
00f3ca2c JW |
1172 | { |
1173 | mod_memcg_page_state(page, idx, -1); | |
1174 | } | |
1175 | ||
1176 | static inline void inc_lruvec_state(struct lruvec *lruvec, | |
1177 | enum node_stat_item idx) | |
1178 | { | |
1179 | mod_lruvec_state(lruvec, idx, 1); | |
1180 | } | |
1181 | ||
1182 | static inline void dec_lruvec_state(struct lruvec *lruvec, | |
1183 | enum node_stat_item idx) | |
1184 | { | |
1185 | mod_lruvec_state(lruvec, idx, -1); | |
1186 | } | |
1187 | ||
1188 | static inline void inc_lruvec_page_state(struct page *page, | |
1189 | enum node_stat_item idx) | |
1190 | { | |
1191 | mod_lruvec_page_state(page, idx, 1); | |
1192 | } | |
1193 | ||
1194 | static inline void dec_lruvec_page_state(struct page *page, | |
1195 | enum node_stat_item idx) | |
1196 | { | |
1197 | mod_lruvec_page_state(page, idx, -1); | |
1198 | } | |
1199 | ||
52ebea74 | 1200 | #ifdef CONFIG_CGROUP_WRITEBACK |
841710aa | 1201 | |
841710aa | 1202 | struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); |
c5edf9cd TH |
1203 | void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, |
1204 | unsigned long *pheadroom, unsigned long *pdirty, | |
1205 | unsigned long *pwriteback); | |
841710aa TH |
1206 | |
1207 | #else /* CONFIG_CGROUP_WRITEBACK */ | |
1208 | ||
1209 | static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) | |
1210 | { | |
1211 | return NULL; | |
1212 | } | |
1213 | ||
c2aa723a | 1214 | static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, |
c5edf9cd TH |
1215 | unsigned long *pfilepages, |
1216 | unsigned long *pheadroom, | |
c2aa723a TH |
1217 | unsigned long *pdirty, |
1218 | unsigned long *pwriteback) | |
1219 | { | |
1220 | } | |
1221 | ||
841710aa | 1222 | #endif /* CONFIG_CGROUP_WRITEBACK */ |
52ebea74 | 1223 | |
e1aab161 | 1224 | struct sock; |
baac50bb JW |
1225 | bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
1226 | void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); | |
d886f4e4 | 1227 | #ifdef CONFIG_MEMCG |
ef12947c JW |
1228 | extern struct static_key_false memcg_sockets_enabled_key; |
1229 | #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key) | |
2d758073 JW |
1230 | void mem_cgroup_sk_alloc(struct sock *sk); |
1231 | void mem_cgroup_sk_free(struct sock *sk); | |
baac50bb | 1232 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c | 1233 | { |
0db15298 | 1234 | if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure) |
8e8ae645 | 1235 | return true; |
8e8ae645 JW |
1236 | do { |
1237 | if (time_before(jiffies, memcg->socket_pressure)) | |
1238 | return true; | |
1239 | } while ((memcg = parent_mem_cgroup(memcg))); | |
1240 | return false; | |
e805605c JW |
1241 | } |
1242 | #else | |
80e95fe0 | 1243 | #define mem_cgroup_sockets_enabled 0 |
2d758073 JW |
1244 | static inline void mem_cgroup_sk_alloc(struct sock *sk) { }; |
1245 | static inline void mem_cgroup_sk_free(struct sock *sk) { }; | |
baac50bb | 1246 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c JW |
1247 | { |
1248 | return false; | |
1249 | } | |
1250 | #endif | |
7ae1e1d0 | 1251 | |
45264778 VD |
1252 | struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); |
1253 | void memcg_kmem_put_cache(struct kmem_cache *cachep); | |
9b6f7e16 RG |
1254 | |
1255 | #ifdef CONFIG_MEMCG_KMEM | |
60cd4bcd SB |
1256 | int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order); |
1257 | void __memcg_kmem_uncharge(struct page *page, int order); | |
1258 | int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, | |
1259 | struct mem_cgroup *memcg); | |
45264778 | 1260 | |
ef12947c | 1261 | extern struct static_key_false memcg_kmem_enabled_key; |
17cc4dfe | 1262 | extern struct workqueue_struct *memcg_kmem_cache_wq; |
749c5415 | 1263 | |
dbcf73e2 | 1264 | extern int memcg_nr_cache_ids; |
64219994 MH |
1265 | void memcg_get_cache_ids(void); |
1266 | void memcg_put_cache_ids(void); | |
ebe945c2 GC |
1267 | |
1268 | /* | |
1269 | * Helper macro to loop through all memcg-specific caches. Callers must still | |
1270 | * check if the cache is valid (it is either valid or NULL). | |
1271 | * the slab_mutex must be held when looping through those caches | |
1272 | */ | |
749c5415 | 1273 | #define for_each_memcg_cache_index(_idx) \ |
dbcf73e2 | 1274 | for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) |
749c5415 | 1275 | |
7ae1e1d0 GC |
1276 | static inline bool memcg_kmem_enabled(void) |
1277 | { | |
ef12947c | 1278 | return static_branch_unlikely(&memcg_kmem_enabled_key); |
7ae1e1d0 GC |
1279 | } |
1280 | ||
60cd4bcd SB |
1281 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
1282 | { | |
1283 | if (memcg_kmem_enabled()) | |
1284 | return __memcg_kmem_charge(page, gfp, order); | |
1285 | return 0; | |
1286 | } | |
1287 | ||
1288 | static inline void memcg_kmem_uncharge(struct page *page, int order) | |
1289 | { | |
1290 | if (memcg_kmem_enabled()) | |
1291 | __memcg_kmem_uncharge(page, order); | |
1292 | } | |
1293 | ||
1294 | static inline int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, | |
1295 | int order, struct mem_cgroup *memcg) | |
1296 | { | |
1297 | if (memcg_kmem_enabled()) | |
1298 | return __memcg_kmem_charge_memcg(page, gfp, order, memcg); | |
1299 | return 0; | |
1300 | } | |
33398cf2 | 1301 | /* |
9f706d68 | 1302 | * helper for accessing a memcg's index. It will be used as an index in the |
33398cf2 MH |
1303 | * child cache array in kmem_cache, and also to derive its name. This function |
1304 | * will return -1 when this is not a kmem-limited memcg. | |
1305 | */ | |
1306 | static inline int memcg_cache_id(struct mem_cgroup *memcg) | |
1307 | { | |
1308 | return memcg ? memcg->kmemcg_id : -1; | |
1309 | } | |
5722d094 | 1310 | |
0a4465d3 KT |
1311 | extern int memcg_expand_shrinker_maps(int new_id); |
1312 | ||
fae91d6d KT |
1313 | extern void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
1314 | int nid, int shrinker_id); | |
7ae1e1d0 | 1315 | #else |
9b6f7e16 RG |
1316 | |
1317 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) | |
1318 | { | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static inline void memcg_kmem_uncharge(struct page *page, int order) | |
1323 | { | |
1324 | } | |
1325 | ||
60cd4bcd SB |
1326 | static inline int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
1327 | { | |
1328 | return 0; | |
1329 | } | |
1330 | ||
1331 | static inline void __memcg_kmem_uncharge(struct page *page, int order) | |
1332 | { | |
1333 | } | |
1334 | ||
749c5415 GC |
1335 | #define for_each_memcg_cache_index(_idx) \ |
1336 | for (; NULL; ) | |
1337 | ||
b9ce5ef4 GC |
1338 | static inline bool memcg_kmem_enabled(void) |
1339 | { | |
1340 | return false; | |
1341 | } | |
1342 | ||
2633d7a0 GC |
1343 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
1344 | { | |
1345 | return -1; | |
1346 | } | |
1347 | ||
05257a1a VD |
1348 | static inline void memcg_get_cache_ids(void) |
1349 | { | |
1350 | } | |
1351 | ||
1352 | static inline void memcg_put_cache_ids(void) | |
1353 | { | |
1354 | } | |
1355 | ||
fae91d6d KT |
1356 | static inline void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
1357 | int nid, int shrinker_id) { } | |
84c07d11 | 1358 | #endif /* CONFIG_MEMCG_KMEM */ |
127424c8 | 1359 | |
8cdea7c0 | 1360 | #endif /* _LINUX_MEMCONTROL_H */ |