Commit | Line | Data |
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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 | 119 | |
815744d7 JW |
120 | /* Legacy local VM stats */ |
121 | struct lruvec_stat __percpu *lruvec_stat_local; | |
122 | ||
123 | /* Subtree VM stats (batched updates) */ | |
a983b5eb JW |
124 | struct lruvec_stat __percpu *lruvec_stat_cpu; |
125 | atomic_long_t lruvec_stat[NR_VM_NODE_STAT_ITEMS]; | |
126 | ||
b4536f0c | 127 | unsigned long lru_zone_size[MAX_NR_ZONES][NR_LRU_LISTS]; |
33398cf2 MH |
128 | |
129 | struct mem_cgroup_reclaim_iter iter[DEF_PRIORITY + 1]; | |
130 | ||
0a4465d3 KT |
131 | #ifdef CONFIG_MEMCG_KMEM |
132 | struct memcg_shrinker_map __rcu *shrinker_map; | |
133 | #endif | |
33398cf2 MH |
134 | struct rb_node tree_node; /* RB tree node */ |
135 | unsigned long usage_in_excess;/* Set to the value by which */ | |
136 | /* the soft limit is exceeded*/ | |
137 | bool on_tree; | |
e3c1ac58 AR |
138 | bool congested; /* memcg has many dirty pages */ |
139 | /* backed by a congested BDI */ | |
140 | ||
33398cf2 MH |
141 | struct mem_cgroup *memcg; /* Back pointer, we cannot */ |
142 | /* use container_of */ | |
143 | }; | |
144 | ||
33398cf2 MH |
145 | struct mem_cgroup_threshold { |
146 | struct eventfd_ctx *eventfd; | |
147 | unsigned long threshold; | |
148 | }; | |
149 | ||
150 | /* For threshold */ | |
151 | struct mem_cgroup_threshold_ary { | |
152 | /* An array index points to threshold just below or equal to usage. */ | |
153 | int current_threshold; | |
154 | /* Size of entries[] */ | |
155 | unsigned int size; | |
156 | /* Array of thresholds */ | |
157 | struct mem_cgroup_threshold entries[0]; | |
158 | }; | |
159 | ||
160 | struct mem_cgroup_thresholds { | |
161 | /* Primary thresholds array */ | |
162 | struct mem_cgroup_threshold_ary *primary; | |
163 | /* | |
164 | * Spare threshold array. | |
165 | * This is needed to make mem_cgroup_unregister_event() "never fail". | |
166 | * It must be able to store at least primary->size - 1 entries. | |
167 | */ | |
168 | struct mem_cgroup_threshold_ary *spare; | |
169 | }; | |
170 | ||
567e9ab2 JW |
171 | enum memcg_kmem_state { |
172 | KMEM_NONE, | |
173 | KMEM_ALLOCATED, | |
174 | KMEM_ONLINE, | |
175 | }; | |
176 | ||
e81bf979 AL |
177 | #if defined(CONFIG_SMP) |
178 | struct memcg_padding { | |
179 | char x[0]; | |
180 | } ____cacheline_internodealigned_in_smp; | |
181 | #define MEMCG_PADDING(name) struct memcg_padding name; | |
182 | #else | |
183 | #define MEMCG_PADDING(name) | |
184 | #endif | |
185 | ||
33398cf2 MH |
186 | /* |
187 | * The memory controller data structure. The memory controller controls both | |
188 | * page cache and RSS per cgroup. We would eventually like to provide | |
189 | * statistics based on the statistics developed by Rik Van Riel for clock-pro, | |
190 | * to help the administrator determine what knobs to tune. | |
191 | */ | |
192 | struct mem_cgroup { | |
193 | struct cgroup_subsys_state css; | |
194 | ||
73f576c0 JW |
195 | /* Private memcg ID. Used to ID objects that outlive the cgroup */ |
196 | struct mem_cgroup_id id; | |
197 | ||
33398cf2 MH |
198 | /* Accounted resources */ |
199 | struct page_counter memory; | |
37e84351 | 200 | struct page_counter swap; |
0db15298 JW |
201 | |
202 | /* Legacy consumer-oriented counters */ | |
33398cf2 MH |
203 | struct page_counter memsw; |
204 | struct page_counter kmem; | |
0db15298 | 205 | struct page_counter tcpmem; |
33398cf2 | 206 | |
23067153 | 207 | /* Upper bound of normal memory consumption range */ |
33398cf2 MH |
208 | unsigned long high; |
209 | ||
f7e1cb6e JW |
210 | /* Range enforcement for interrupt charges */ |
211 | struct work_struct high_work; | |
212 | ||
33398cf2 MH |
213 | unsigned long soft_limit; |
214 | ||
215 | /* vmpressure notifications */ | |
216 | struct vmpressure vmpressure; | |
217 | ||
33398cf2 MH |
218 | /* |
219 | * Should the accounting and control be hierarchical, per subtree? | |
220 | */ | |
221 | bool use_hierarchy; | |
222 | ||
3d8b38eb RG |
223 | /* |
224 | * Should the OOM killer kill all belonging tasks, had it kill one? | |
225 | */ | |
226 | bool oom_group; | |
227 | ||
33398cf2 MH |
228 | /* protected by memcg_oom_lock */ |
229 | bool oom_lock; | |
230 | int under_oom; | |
231 | ||
232 | int swappiness; | |
233 | /* OOM-Killer disable */ | |
234 | int oom_kill_disable; | |
235 | ||
1e577f97 | 236 | /* memory.events and memory.events.local */ |
472912a2 | 237 | struct cgroup_file events_file; |
1e577f97 | 238 | struct cgroup_file events_local_file; |
472912a2 | 239 | |
f3a53a3a TH |
240 | /* handle for "memory.swap.events" */ |
241 | struct cgroup_file swap_events_file; | |
242 | ||
33398cf2 MH |
243 | /* protect arrays of thresholds */ |
244 | struct mutex thresholds_lock; | |
245 | ||
246 | /* thresholds for memory usage. RCU-protected */ | |
247 | struct mem_cgroup_thresholds thresholds; | |
248 | ||
249 | /* thresholds for mem+swap usage. RCU-protected */ | |
250 | struct mem_cgroup_thresholds memsw_thresholds; | |
251 | ||
252 | /* For oom notifier event fd */ | |
253 | struct list_head oom_notify; | |
254 | ||
255 | /* | |
256 | * Should we move charges of a task when a task is moved into this | |
257 | * mem_cgroup ? And what type of charges should we move ? | |
258 | */ | |
259 | unsigned long move_charge_at_immigrate; | |
e81bf979 AL |
260 | /* taken only while moving_account > 0 */ |
261 | spinlock_t move_lock; | |
262 | unsigned long move_lock_flags; | |
263 | ||
264 | MEMCG_PADDING(_pad1_); | |
265 | ||
33398cf2 MH |
266 | /* |
267 | * set > 0 if pages under this cgroup are moving to other cgroup. | |
268 | */ | |
269 | atomic_t moving_account; | |
33398cf2 | 270 | struct task_struct *move_lock_task; |
a983b5eb | 271 | |
815744d7 JW |
272 | /* Legacy local VM stats and events */ |
273 | struct memcg_vmstats_percpu __percpu *vmstats_local; | |
274 | ||
275 | /* Subtree VM stats and events (batched updates) */ | |
871789d4 | 276 | struct memcg_vmstats_percpu __percpu *vmstats_percpu; |
e81bf979 AL |
277 | |
278 | MEMCG_PADDING(_pad2_); | |
279 | ||
871789d4 CD |
280 | atomic_long_t vmstats[MEMCG_NR_STAT]; |
281 | atomic_long_t vmevents[NR_VM_EVENT_ITEMS]; | |
42a30035 | 282 | |
815744d7 | 283 | /* memory.events */ |
42a30035 | 284 | atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; |
1e577f97 | 285 | atomic_long_t memory_events_local[MEMCG_NR_MEMORY_EVENTS]; |
33398cf2 | 286 | |
d886f4e4 JW |
287 | unsigned long socket_pressure; |
288 | ||
289 | /* Legacy tcp memory accounting */ | |
0db15298 JW |
290 | bool tcpmem_active; |
291 | int tcpmem_pressure; | |
d886f4e4 | 292 | |
84c07d11 | 293 | #ifdef CONFIG_MEMCG_KMEM |
33398cf2 MH |
294 | /* Index in the kmem_cache->memcg_params.memcg_caches array */ |
295 | int kmemcg_id; | |
567e9ab2 | 296 | enum memcg_kmem_state kmem_state; |
bc2791f8 | 297 | struct list_head kmem_caches; |
33398cf2 MH |
298 | #endif |
299 | ||
300 | int last_scanned_node; | |
301 | #if MAX_NUMNODES > 1 | |
302 | nodemask_t scan_nodes; | |
303 | atomic_t numainfo_events; | |
304 | atomic_t numainfo_updating; | |
305 | #endif | |
306 | ||
307 | #ifdef CONFIG_CGROUP_WRITEBACK | |
308 | struct list_head cgwb_list; | |
309 | struct wb_domain cgwb_domain; | |
310 | #endif | |
311 | ||
312 | /* List of events which userspace want to receive */ | |
313 | struct list_head event_list; | |
314 | spinlock_t event_list_lock; | |
315 | ||
316 | struct mem_cgroup_per_node *nodeinfo[0]; | |
317 | /* WARNING: nodeinfo must be the last member here */ | |
318 | }; | |
7d828602 | 319 | |
a983b5eb JW |
320 | /* |
321 | * size of first charge trial. "32" comes from vmscan.c's magic value. | |
322 | * TODO: maybe necessary to use big numbers in big irons. | |
323 | */ | |
324 | #define MEMCG_CHARGE_BATCH 32U | |
325 | ||
7d828602 | 326 | extern struct mem_cgroup *root_mem_cgroup; |
56161634 | 327 | |
dfd2f10c KT |
328 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
329 | { | |
330 | return (memcg == root_mem_cgroup); | |
331 | } | |
332 | ||
23047a96 JW |
333 | static inline bool mem_cgroup_disabled(void) |
334 | { | |
335 | return !cgroup_subsys_enabled(memory_cgrp_subsys); | |
336 | } | |
337 | ||
bf8d5d52 RG |
338 | enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root, |
339 | struct mem_cgroup *memcg); | |
241994ed | 340 | |
00501b53 | 341 | int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
f627c2f5 KS |
342 | gfp_t gfp_mask, struct mem_cgroup **memcgp, |
343 | bool compound); | |
2cf85583 TH |
344 | int mem_cgroup_try_charge_delay(struct page *page, struct mm_struct *mm, |
345 | gfp_t gfp_mask, struct mem_cgroup **memcgp, | |
346 | bool compound); | |
00501b53 | 347 | void mem_cgroup_commit_charge(struct page *page, struct mem_cgroup *memcg, |
f627c2f5 KS |
348 | bool lrucare, bool compound); |
349 | void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, | |
350 | bool compound); | |
0a31bc97 | 351 | void mem_cgroup_uncharge(struct page *page); |
747db954 | 352 | void mem_cgroup_uncharge_list(struct list_head *page_list); |
569b846d | 353 | |
6a93ca8f | 354 | void mem_cgroup_migrate(struct page *oldpage, struct page *newpage); |
569b846d | 355 | |
ef8f2327 MG |
356 | static struct mem_cgroup_per_node * |
357 | mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) | |
55779ec7 | 358 | { |
ef8f2327 | 359 | return memcg->nodeinfo[nid]; |
55779ec7 JW |
360 | } |
361 | ||
362 | /** | |
a9dd0a83 MG |
363 | * mem_cgroup_lruvec - get the lru list vector for a node or a memcg zone |
364 | * @node: node of the wanted lruvec | |
55779ec7 JW |
365 | * @memcg: memcg of the wanted lruvec |
366 | * | |
a9dd0a83 MG |
367 | * Returns the lru list vector holding pages for a given @node or a given |
368 | * @memcg and @zone. This can be the node lruvec, if the memory controller | |
55779ec7 JW |
369 | * is disabled. |
370 | */ | |
a9dd0a83 | 371 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 372 | struct mem_cgroup *memcg) |
55779ec7 | 373 | { |
ef8f2327 | 374 | struct mem_cgroup_per_node *mz; |
55779ec7 JW |
375 | struct lruvec *lruvec; |
376 | ||
377 | if (mem_cgroup_disabled()) { | |
a9dd0a83 | 378 | lruvec = node_lruvec(pgdat); |
55779ec7 JW |
379 | goto out; |
380 | } | |
381 | ||
ef8f2327 | 382 | mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id); |
55779ec7 JW |
383 | lruvec = &mz->lruvec; |
384 | out: | |
385 | /* | |
386 | * Since a node can be onlined after the mem_cgroup was created, | |
599d0c95 | 387 | * we have to be prepared to initialize lruvec->pgdat here; |
55779ec7 JW |
388 | * and if offlined then reonlined, we need to reinitialize it. |
389 | */ | |
ef8f2327 MG |
390 | if (unlikely(lruvec->pgdat != pgdat)) |
391 | lruvec->pgdat = pgdat; | |
55779ec7 JW |
392 | return lruvec; |
393 | } | |
394 | ||
599d0c95 | 395 | struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *); |
c9b0ed51 | 396 | |
64219994 | 397 | struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
e993d905 | 398 | |
d46eb14b SB |
399 | struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); |
400 | ||
f745c6f5 SB |
401 | struct mem_cgroup *get_mem_cgroup_from_page(struct page *page); |
402 | ||
33398cf2 MH |
403 | static inline |
404 | struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ | |
405 | return css ? container_of(css, struct mem_cgroup, css) : NULL; | |
406 | } | |
407 | ||
dc0b5864 RG |
408 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
409 | { | |
d46eb14b SB |
410 | if (memcg) |
411 | css_put(&memcg->css); | |
dc0b5864 RG |
412 | } |
413 | ||
8e8ae645 JW |
414 | #define mem_cgroup_from_counter(counter, member) \ |
415 | container_of(counter, struct mem_cgroup, member) | |
416 | ||
33398cf2 MH |
417 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
418 | struct mem_cgroup *, | |
419 | struct mem_cgroup_reclaim_cookie *); | |
420 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); | |
7c5f64f8 VD |
421 | int mem_cgroup_scan_tasks(struct mem_cgroup *, |
422 | int (*)(struct task_struct *, void *), void *); | |
33398cf2 | 423 | |
23047a96 JW |
424 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
425 | { | |
426 | if (mem_cgroup_disabled()) | |
427 | return 0; | |
428 | ||
73f576c0 | 429 | return memcg->id.id; |
23047a96 | 430 | } |
73f576c0 | 431 | struct mem_cgroup *mem_cgroup_from_id(unsigned short id); |
23047a96 | 432 | |
aa9694bb CD |
433 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
434 | { | |
435 | return mem_cgroup_from_css(seq_css(m)); | |
436 | } | |
437 | ||
2262185c RG |
438 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
439 | { | |
440 | struct mem_cgroup_per_node *mz; | |
441 | ||
442 | if (mem_cgroup_disabled()) | |
443 | return NULL; | |
444 | ||
445 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
446 | return mz->memcg; | |
447 | } | |
448 | ||
8e8ae645 JW |
449 | /** |
450 | * parent_mem_cgroup - find the accounting parent of a memcg | |
451 | * @memcg: memcg whose parent to find | |
452 | * | |
453 | * Returns the parent memcg, or NULL if this is the root or the memory | |
454 | * controller is in legacy no-hierarchy mode. | |
455 | */ | |
456 | static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) | |
457 | { | |
458 | if (!memcg->memory.parent) | |
459 | return NULL; | |
460 | return mem_cgroup_from_counter(memcg->memory.parent, memory); | |
461 | } | |
462 | ||
33398cf2 MH |
463 | static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg, |
464 | struct mem_cgroup *root) | |
465 | { | |
466 | if (root == memcg) | |
467 | return true; | |
468 | if (!root->use_hierarchy) | |
469 | return false; | |
470 | return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup); | |
471 | } | |
e1aab161 | 472 | |
2314b42d JW |
473 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
474 | struct mem_cgroup *memcg) | |
2e4d4091 | 475 | { |
587af308 | 476 | struct mem_cgroup *task_memcg; |
413918bb | 477 | bool match = false; |
c3ac9a8a | 478 | |
2e4d4091 | 479 | rcu_read_lock(); |
587af308 | 480 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
413918bb | 481 | if (task_memcg) |
2314b42d | 482 | match = mem_cgroup_is_descendant(task_memcg, memcg); |
2e4d4091 | 483 | rcu_read_unlock(); |
c3ac9a8a | 484 | return match; |
2e4d4091 | 485 | } |
8a9f3ccd | 486 | |
64219994 | 487 | struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page); |
2fc04524 | 488 | ino_t page_cgroup_ino(struct page *page); |
d324236b | 489 | |
eb01aaab VD |
490 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
491 | { | |
492 | if (mem_cgroup_disabled()) | |
493 | return true; | |
494 | return !!(memcg->css.flags & CSS_ONLINE); | |
495 | } | |
496 | ||
58ae83db KH |
497 | /* |
498 | * For memory reclaim. | |
499 | */ | |
889976db | 500 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
33398cf2 MH |
501 | |
502 | void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, | |
b4536f0c | 503 | int zid, int nr_pages); |
33398cf2 | 504 | |
b4536f0c MH |
505 | static inline |
506 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
507 | enum lru_list lru, int zone_idx) | |
508 | { | |
509 | struct mem_cgroup_per_node *mz; | |
510 | ||
511 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
512 | return mz->lru_zone_size[zone_idx][lru]; | |
33398cf2 MH |
513 | } |
514 | ||
b23afb93 TH |
515 | void mem_cgroup_handle_over_high(void); |
516 | ||
bbec2e15 | 517 | unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); |
7c5f64f8 | 518 | |
f0c867d9 | 519 | void mem_cgroup_print_oom_context(struct mem_cgroup *memcg, |
64219994 | 520 | struct task_struct *p); |
58ae83db | 521 | |
f0c867d9 | 522 | void mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg); |
523 | ||
29ef680a | 524 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 | 525 | { |
29ef680a MH |
526 | WARN_ON(current->in_user_fault); |
527 | current->in_user_fault = 1; | |
519e5247 JW |
528 | } |
529 | ||
29ef680a | 530 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 | 531 | { |
29ef680a MH |
532 | WARN_ON(!current->in_user_fault); |
533 | current->in_user_fault = 0; | |
519e5247 JW |
534 | } |
535 | ||
3812c8c8 JW |
536 | static inline bool task_in_memcg_oom(struct task_struct *p) |
537 | { | |
626ebc41 | 538 | return p->memcg_in_oom; |
3812c8c8 JW |
539 | } |
540 | ||
49426420 | 541 | bool mem_cgroup_oom_synchronize(bool wait); |
3d8b38eb RG |
542 | struct mem_cgroup *mem_cgroup_get_oom_group(struct task_struct *victim, |
543 | struct mem_cgroup *oom_domain); | |
544 | void mem_cgroup_print_oom_group(struct mem_cgroup *memcg); | |
3812c8c8 | 545 | |
c255a458 | 546 | #ifdef CONFIG_MEMCG_SWAP |
c077719b KH |
547 | extern int do_swap_account; |
548 | #endif | |
f8d66542 | 549 | |
739f79fc JW |
550 | struct mem_cgroup *lock_page_memcg(struct page *page); |
551 | void __unlock_page_memcg(struct mem_cgroup *memcg); | |
62cccb8c | 552 | void unlock_page_memcg(struct page *page); |
d7365e78 | 553 | |
42a30035 JW |
554 | /* |
555 | * idx can be of type enum memcg_stat_item or node_stat_item. | |
556 | * Keep in sync with memcg_exact_page_state(). | |
557 | */ | |
558 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) | |
559 | { | |
560 | long x = atomic_long_read(&memcg->vmstats[idx]); | |
561 | #ifdef CONFIG_SMP | |
562 | if (x < 0) | |
563 | x = 0; | |
564 | #endif | |
565 | return x; | |
566 | } | |
567 | ||
0b3d6e6f GT |
568 | /* |
569 | * idx can be of type enum memcg_stat_item or node_stat_item. | |
570 | * Keep in sync with memcg_exact_page_state(). | |
571 | */ | |
205b20cc JW |
572 | static inline unsigned long memcg_page_state_local(struct mem_cgroup *memcg, |
573 | int idx) | |
2a2e4885 | 574 | { |
815744d7 JW |
575 | long x = 0; |
576 | int cpu; | |
577 | ||
578 | for_each_possible_cpu(cpu) | |
579 | x += per_cpu(memcg->vmstats_local->stat[idx], cpu); | |
a983b5eb JW |
580 | #ifdef CONFIG_SMP |
581 | if (x < 0) | |
582 | x = 0; | |
583 | #endif | |
584 | return x; | |
2a2e4885 JW |
585 | } |
586 | ||
db9adbcb | 587 | void __mod_memcg_state(struct mem_cgroup *memcg, int idx, int val); |
2a2e4885 | 588 | |
04fecbf5 | 589 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 590 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 591 | int idx, int val) |
2a2e4885 | 592 | { |
c3cc3911 JW |
593 | unsigned long flags; |
594 | ||
595 | local_irq_save(flags); | |
a983b5eb | 596 | __mod_memcg_state(memcg, idx, val); |
c3cc3911 | 597 | local_irq_restore(flags); |
2a2e4885 JW |
598 | } |
599 | ||
33398cf2 | 600 | /** |
ccda7f43 | 601 | * mod_memcg_page_state - update page state statistics |
62cccb8c | 602 | * @page: the page |
33398cf2 MH |
603 | * @idx: page state item to account |
604 | * @val: number of pages (positive or negative) | |
605 | * | |
fdf1cdb9 JW |
606 | * The @page must be locked or the caller must use lock_page_memcg() |
607 | * to prevent double accounting when the page is concurrently being | |
608 | * moved to another memcg: | |
81f8c3a4 | 609 | * |
fdf1cdb9 | 610 | * lock_page(page) or lock_page_memcg(page) |
81f8c3a4 | 611 | * if (TestClearPageState(page)) |
ccda7f43 | 612 | * mod_memcg_page_state(page, state, -1); |
fdf1cdb9 | 613 | * unlock_page(page) or unlock_page_memcg(page) |
2a2e4885 JW |
614 | * |
615 | * Kernel pages are an exception to this, since they'll never move. | |
33398cf2 | 616 | */ |
00f3ca2c | 617 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 618 | int idx, int val) |
00f3ca2c JW |
619 | { |
620 | if (page->mem_cgroup) | |
621 | __mod_memcg_state(page->mem_cgroup, idx, val); | |
622 | } | |
623 | ||
ccda7f43 | 624 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 625 | int idx, int val) |
33398cf2 | 626 | { |
62cccb8c | 627 | if (page->mem_cgroup) |
ccda7f43 | 628 | mod_memcg_state(page->mem_cgroup, idx, val); |
33398cf2 MH |
629 | } |
630 | ||
42a30035 JW |
631 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
632 | enum node_stat_item idx) | |
633 | { | |
634 | struct mem_cgroup_per_node *pn; | |
635 | long x; | |
636 | ||
637 | if (mem_cgroup_disabled()) | |
638 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
639 | ||
640 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
641 | x = atomic_long_read(&pn->lruvec_stat[idx]); | |
642 | #ifdef CONFIG_SMP | |
643 | if (x < 0) | |
644 | x = 0; | |
645 | #endif | |
646 | return x; | |
647 | } | |
648 | ||
205b20cc JW |
649 | static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec, |
650 | enum node_stat_item idx) | |
2a7106f2 | 651 | { |
00f3ca2c | 652 | struct mem_cgroup_per_node *pn; |
815744d7 JW |
653 | long x = 0; |
654 | int cpu; | |
00f3ca2c JW |
655 | |
656 | if (mem_cgroup_disabled()) | |
657 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
658 | ||
659 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
815744d7 JW |
660 | for_each_possible_cpu(cpu) |
661 | x += per_cpu(pn->lruvec_stat_local->count[idx], cpu); | |
a983b5eb JW |
662 | #ifdef CONFIG_SMP |
663 | if (x < 0) | |
664 | x = 0; | |
665 | #endif | |
666 | return x; | |
2a7106f2 GT |
667 | } |
668 | ||
db9adbcb JW |
669 | void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx, |
670 | int val); | |
00f3ca2c JW |
671 | |
672 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
673 | enum node_stat_item idx, int val) | |
674 | { | |
c3cc3911 JW |
675 | unsigned long flags; |
676 | ||
677 | local_irq_save(flags); | |
28454265 | 678 | __mod_lruvec_state(lruvec, idx, val); |
c3cc3911 | 679 | local_irq_restore(flags); |
00f3ca2c JW |
680 | } |
681 | ||
682 | static inline void __mod_lruvec_page_state(struct page *page, | |
683 | enum node_stat_item idx, int val) | |
684 | { | |
28454265 JW |
685 | pg_data_t *pgdat = page_pgdat(page); |
686 | struct lruvec *lruvec; | |
00f3ca2c | 687 | |
28454265 JW |
688 | /* Untracked pages have no memcg, no lruvec. Update only the node */ |
689 | if (!page->mem_cgroup) { | |
690 | __mod_node_page_state(pgdat, idx, val); | |
00f3ca2c | 691 | return; |
28454265 JW |
692 | } |
693 | ||
694 | lruvec = mem_cgroup_lruvec(pgdat, page->mem_cgroup); | |
695 | __mod_lruvec_state(lruvec, idx, val); | |
00f3ca2c JW |
696 | } |
697 | ||
698 | static inline void mod_lruvec_page_state(struct page *page, | |
699 | enum node_stat_item idx, int val) | |
700 | { | |
c3cc3911 JW |
701 | unsigned long flags; |
702 | ||
703 | local_irq_save(flags); | |
28454265 | 704 | __mod_lruvec_page_state(page, idx, val); |
c3cc3911 | 705 | local_irq_restore(flags); |
2a7106f2 GT |
706 | } |
707 | ||
ef8f2327 | 708 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
709 | gfp_t gfp_mask, |
710 | unsigned long *total_scanned); | |
a63d83f4 | 711 | |
db9adbcb JW |
712 | void __count_memcg_events(struct mem_cgroup *memcg, enum vm_event_item idx, |
713 | unsigned long count); | |
c9019e9b | 714 | |
2262185c | 715 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
716 | enum vm_event_item idx, |
717 | unsigned long count) | |
2262185c | 718 | { |
c3cc3911 JW |
719 | unsigned long flags; |
720 | ||
721 | local_irq_save(flags); | |
a983b5eb | 722 | __count_memcg_events(memcg, idx, count); |
c3cc3911 | 723 | local_irq_restore(flags); |
2262185c RG |
724 | } |
725 | ||
726 | static inline void count_memcg_page_event(struct page *page, | |
e27be240 | 727 | enum vm_event_item idx) |
2262185c RG |
728 | { |
729 | if (page->mem_cgroup) | |
730 | count_memcg_events(page->mem_cgroup, idx, 1); | |
731 | } | |
732 | ||
733 | static inline void count_memcg_event_mm(struct mm_struct *mm, | |
734 | enum vm_event_item idx) | |
68ae564b | 735 | { |
33398cf2 MH |
736 | struct mem_cgroup *memcg; |
737 | ||
68ae564b DR |
738 | if (mem_cgroup_disabled()) |
739 | return; | |
33398cf2 MH |
740 | |
741 | rcu_read_lock(); | |
742 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
fe6bdfc8 | 743 | if (likely(memcg)) |
c9019e9b | 744 | count_memcg_events(memcg, idx, 1); |
33398cf2 | 745 | rcu_read_unlock(); |
68ae564b | 746 | } |
c9019e9b | 747 | |
e27be240 JW |
748 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
749 | enum memcg_memory_event event) | |
c9019e9b | 750 | { |
1e577f97 SB |
751 | atomic_long_inc(&memcg->memory_events_local[event]); |
752 | cgroup_file_notify(&memcg->events_local_file); | |
753 | ||
9852ae3f CD |
754 | do { |
755 | atomic_long_inc(&memcg->memory_events[event]); | |
756 | cgroup_file_notify(&memcg->events_file); | |
757 | ||
758 | if (cgrp_dfl_root.flags & CGRP_ROOT_MEMORY_LOCAL_EVENTS) | |
759 | break; | |
760 | } while ((memcg = parent_mem_cgroup(memcg)) && | |
761 | !mem_cgroup_is_root(memcg)); | |
c9019e9b JW |
762 | } |
763 | ||
fe6bdfc8 RG |
764 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
765 | enum memcg_memory_event event) | |
766 | { | |
767 | struct mem_cgroup *memcg; | |
768 | ||
769 | if (mem_cgroup_disabled()) | |
770 | return; | |
771 | ||
772 | rcu_read_lock(); | |
773 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
774 | if (likely(memcg)) | |
775 | memcg_memory_event(memcg, event); | |
776 | rcu_read_unlock(); | |
777 | } | |
778 | ||
ca3e0214 | 779 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e94c8a9c | 780 | void mem_cgroup_split_huge_fixup(struct page *head); |
ca3e0214 KH |
781 | #endif |
782 | ||
c255a458 | 783 | #else /* CONFIG_MEMCG */ |
23047a96 JW |
784 | |
785 | #define MEM_CGROUP_ID_SHIFT 0 | |
786 | #define MEM_CGROUP_ID_MAX 0 | |
787 | ||
7a81b88c KH |
788 | struct mem_cgroup; |
789 | ||
dfd2f10c KT |
790 | static inline bool mem_cgroup_is_root(struct mem_cgroup *memcg) |
791 | { | |
792 | return true; | |
793 | } | |
794 | ||
23047a96 JW |
795 | static inline bool mem_cgroup_disabled(void) |
796 | { | |
797 | return true; | |
798 | } | |
799 | ||
e27be240 JW |
800 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
801 | enum memcg_memory_event event) | |
241994ed JW |
802 | { |
803 | } | |
804 | ||
fe6bdfc8 RG |
805 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
806 | enum memcg_memory_event event) | |
807 | { | |
808 | } | |
809 | ||
bf8d5d52 RG |
810 | static inline enum mem_cgroup_protection mem_cgroup_protected( |
811 | struct mem_cgroup *root, struct mem_cgroup *memcg) | |
241994ed | 812 | { |
bf8d5d52 | 813 | return MEMCG_PROT_NONE; |
241994ed JW |
814 | } |
815 | ||
00501b53 JW |
816 | static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
817 | gfp_t gfp_mask, | |
f627c2f5 KS |
818 | struct mem_cgroup **memcgp, |
819 | bool compound) | |
7a81b88c | 820 | { |
00501b53 | 821 | *memcgp = NULL; |
7a81b88c KH |
822 | return 0; |
823 | } | |
824 | ||
2cf85583 TH |
825 | static inline int mem_cgroup_try_charge_delay(struct page *page, |
826 | struct mm_struct *mm, | |
827 | gfp_t gfp_mask, | |
828 | struct mem_cgroup **memcgp, | |
829 | bool compound) | |
830 | { | |
831 | *memcgp = NULL; | |
832 | return 0; | |
833 | } | |
834 | ||
00501b53 JW |
835 | static inline void mem_cgroup_commit_charge(struct page *page, |
836 | struct mem_cgroup *memcg, | |
f627c2f5 | 837 | bool lrucare, bool compound) |
7a81b88c KH |
838 | { |
839 | } | |
840 | ||
00501b53 | 841 | static inline void mem_cgroup_cancel_charge(struct page *page, |
f627c2f5 KS |
842 | struct mem_cgroup *memcg, |
843 | bool compound) | |
7a81b88c KH |
844 | { |
845 | } | |
846 | ||
0a31bc97 | 847 | static inline void mem_cgroup_uncharge(struct page *page) |
569b846d KH |
848 | { |
849 | } | |
850 | ||
747db954 | 851 | static inline void mem_cgroup_uncharge_list(struct list_head *page_list) |
8a9f3ccd BS |
852 | { |
853 | } | |
854 | ||
6a93ca8f | 855 | static inline void mem_cgroup_migrate(struct page *old, struct page *new) |
69029cd5 KH |
856 | { |
857 | } | |
858 | ||
a9dd0a83 | 859 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 860 | struct mem_cgroup *memcg) |
08e552c6 | 861 | { |
a9dd0a83 | 862 | return node_lruvec(pgdat); |
08e552c6 KH |
863 | } |
864 | ||
fa9add64 | 865 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
599d0c95 | 866 | struct pglist_data *pgdat) |
66e1707b | 867 | { |
599d0c95 | 868 | return &pgdat->lruvec; |
66e1707b BS |
869 | } |
870 | ||
587af308 | 871 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
c0ff4b85 | 872 | struct mem_cgroup *memcg) |
bed7161a | 873 | { |
587af308 | 874 | return true; |
bed7161a BS |
875 | } |
876 | ||
d46eb14b SB |
877 | static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) |
878 | { | |
879 | return NULL; | |
880 | } | |
881 | ||
f745c6f5 SB |
882 | static inline struct mem_cgroup *get_mem_cgroup_from_page(struct page *page) |
883 | { | |
884 | return NULL; | |
885 | } | |
886 | ||
dc0b5864 RG |
887 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
888 | { | |
889 | } | |
890 | ||
5660048c JW |
891 | static inline struct mem_cgroup * |
892 | mem_cgroup_iter(struct mem_cgroup *root, | |
893 | struct mem_cgroup *prev, | |
894 | struct mem_cgroup_reclaim_cookie *reclaim) | |
895 | { | |
896 | return NULL; | |
897 | } | |
898 | ||
899 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, | |
900 | struct mem_cgroup *prev) | |
901 | { | |
902 | } | |
903 | ||
7c5f64f8 VD |
904 | static inline int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, |
905 | int (*fn)(struct task_struct *, void *), void *arg) | |
906 | { | |
907 | return 0; | |
908 | } | |
909 | ||
23047a96 | 910 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
f8d66542 | 911 | { |
23047a96 JW |
912 | return 0; |
913 | } | |
914 | ||
915 | static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id) | |
916 | { | |
917 | WARN_ON_ONCE(id); | |
918 | /* XXX: This should always return root_mem_cgroup */ | |
919 | return NULL; | |
f8d66542 | 920 | } |
a636b327 | 921 | |
aa9694bb CD |
922 | static inline struct mem_cgroup *mem_cgroup_from_seq(struct seq_file *m) |
923 | { | |
924 | return NULL; | |
925 | } | |
926 | ||
2262185c RG |
927 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
928 | { | |
929 | return NULL; | |
930 | } | |
931 | ||
eb01aaab | 932 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
14797e23 | 933 | { |
13308ca9 | 934 | return true; |
14797e23 KM |
935 | } |
936 | ||
b4536f0c MH |
937 | static inline |
938 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
939 | enum lru_list lru, int zone_idx) | |
940 | { | |
941 | return 0; | |
942 | } | |
a3d8e054 | 943 | |
bbec2e15 | 944 | static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) |
7c5f64f8 VD |
945 | { |
946 | return 0; | |
947 | } | |
948 | ||
e222432b | 949 | static inline void |
f0c867d9 | 950 | mem_cgroup_print_oom_context(struct mem_cgroup *memcg, struct task_struct *p) |
951 | { | |
952 | } | |
953 | ||
954 | static inline void | |
955 | mem_cgroup_print_oom_meminfo(struct mem_cgroup *memcg) | |
e222432b BS |
956 | { |
957 | } | |
958 | ||
739f79fc JW |
959 | static inline struct mem_cgroup *lock_page_memcg(struct page *page) |
960 | { | |
961 | return NULL; | |
962 | } | |
963 | ||
964 | static inline void __unlock_page_memcg(struct mem_cgroup *memcg) | |
89c06bd5 KH |
965 | { |
966 | } | |
967 | ||
62cccb8c | 968 | static inline void unlock_page_memcg(struct page *page) |
89c06bd5 KH |
969 | { |
970 | } | |
971 | ||
b23afb93 TH |
972 | static inline void mem_cgroup_handle_over_high(void) |
973 | { | |
974 | } | |
975 | ||
29ef680a | 976 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 JW |
977 | { |
978 | } | |
979 | ||
29ef680a | 980 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 JW |
981 | { |
982 | } | |
983 | ||
3812c8c8 JW |
984 | static inline bool task_in_memcg_oom(struct task_struct *p) |
985 | { | |
986 | return false; | |
987 | } | |
988 | ||
49426420 | 989 | static inline bool mem_cgroup_oom_synchronize(bool wait) |
3812c8c8 JW |
990 | { |
991 | return false; | |
992 | } | |
993 | ||
3d8b38eb RG |
994 | static inline struct mem_cgroup *mem_cgroup_get_oom_group( |
995 | struct task_struct *victim, struct mem_cgroup *oom_domain) | |
996 | { | |
997 | return NULL; | |
998 | } | |
999 | ||
1000 | static inline void mem_cgroup_print_oom_group(struct mem_cgroup *memcg) | |
1001 | { | |
1002 | } | |
1003 | ||
42a30035 JW |
1004 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, int idx) |
1005 | { | |
1006 | return 0; | |
1007 | } | |
1008 | ||
205b20cc JW |
1009 | static inline unsigned long memcg_page_state_local(struct mem_cgroup *memcg, |
1010 | int idx) | |
2a2e4885 JW |
1011 | { |
1012 | return 0; | |
1013 | } | |
1014 | ||
00f3ca2c | 1015 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1016 | int idx, |
00f3ca2c | 1017 | int nr) |
2a2e4885 JW |
1018 | { |
1019 | } | |
1020 | ||
00f3ca2c | 1021 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1022 | int idx, |
00f3ca2c | 1023 | int nr) |
2a2e4885 JW |
1024 | { |
1025 | } | |
1026 | ||
00f3ca2c | 1027 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 1028 | int idx, |
00f3ca2c | 1029 | int nr) |
2a2e4885 JW |
1030 | { |
1031 | } | |
1032 | ||
ccda7f43 | 1033 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 1034 | int idx, |
ccda7f43 | 1035 | int nr) |
553af430 JW |
1036 | { |
1037 | } | |
1038 | ||
42a30035 JW |
1039 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
1040 | enum node_stat_item idx) | |
1041 | { | |
1042 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
1043 | } | |
1044 | ||
205b20cc JW |
1045 | static inline unsigned long lruvec_page_state_local(struct lruvec *lruvec, |
1046 | enum node_stat_item idx) | |
2a7106f2 | 1047 | { |
00f3ca2c | 1048 | return node_page_state(lruvec_pgdat(lruvec), idx); |
2a7106f2 GT |
1049 | } |
1050 | ||
00f3ca2c JW |
1051 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
1052 | enum node_stat_item idx, int val) | |
d69b042f | 1053 | { |
00f3ca2c JW |
1054 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
1055 | } | |
1056 | ||
1057 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
1058 | enum node_stat_item idx, int val) | |
1059 | { | |
1060 | mod_node_page_state(lruvec_pgdat(lruvec), idx, val); | |
1061 | } | |
1062 | ||
1063 | static inline void __mod_lruvec_page_state(struct page *page, | |
1064 | enum node_stat_item idx, int val) | |
1065 | { | |
1066 | __mod_node_page_state(page_pgdat(page), idx, val); | |
1067 | } | |
1068 | ||
1069 | static inline void mod_lruvec_page_state(struct page *page, | |
1070 | enum node_stat_item idx, int val) | |
1071 | { | |
1072 | mod_node_page_state(page_pgdat(page), idx, val); | |
d69b042f BS |
1073 | } |
1074 | ||
4e416953 | 1075 | static inline |
ef8f2327 | 1076 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
1077 | gfp_t gfp_mask, |
1078 | unsigned long *total_scanned) | |
4e416953 | 1079 | { |
0608f43d | 1080 | return 0; |
4e416953 BS |
1081 | } |
1082 | ||
e94c8a9c | 1083 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
ca3e0214 KH |
1084 | { |
1085 | } | |
1086 | ||
2262185c RG |
1087 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
1088 | enum vm_event_item idx, | |
1089 | unsigned long count) | |
1090 | { | |
1091 | } | |
1092 | ||
9851ac13 KT |
1093 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
1094 | enum vm_event_item idx, | |
1095 | unsigned long count) | |
1096 | { | |
1097 | } | |
1098 | ||
2262185c | 1099 | static inline void count_memcg_page_event(struct page *page, |
04fecbf5 | 1100 | int idx) |
2262185c RG |
1101 | { |
1102 | } | |
1103 | ||
456f998e | 1104 | static inline |
2262185c | 1105 | void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) |
456f998e YH |
1106 | { |
1107 | } | |
c255a458 | 1108 | #endif /* CONFIG_MEMCG */ |
78fb7466 | 1109 | |
04fecbf5 | 1110 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1111 | static inline void __inc_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1112 | int idx) |
00f3ca2c JW |
1113 | { |
1114 | __mod_memcg_state(memcg, 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_state(struct mem_cgroup *memcg, |
04fecbf5 | 1119 | int idx) |
00f3ca2c JW |
1120 | { |
1121 | __mod_memcg_state(memcg, idx, -1); | |
1122 | } | |
1123 | ||
04fecbf5 | 1124 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1125 | static inline void __inc_memcg_page_state(struct page *page, |
04fecbf5 | 1126 | int idx) |
00f3ca2c JW |
1127 | { |
1128 | __mod_memcg_page_state(page, idx, 1); | |
1129 | } | |
1130 | ||
04fecbf5 | 1131 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1132 | static inline void __dec_memcg_page_state(struct page *page, |
04fecbf5 | 1133 | int idx) |
00f3ca2c JW |
1134 | { |
1135 | __mod_memcg_page_state(page, idx, -1); | |
1136 | } | |
1137 | ||
1138 | static inline void __inc_lruvec_state(struct lruvec *lruvec, | |
1139 | enum node_stat_item idx) | |
1140 | { | |
1141 | __mod_lruvec_state(lruvec, idx, 1); | |
1142 | } | |
1143 | ||
1144 | static inline void __dec_lruvec_state(struct lruvec *lruvec, | |
1145 | enum node_stat_item idx) | |
1146 | { | |
1147 | __mod_lruvec_state(lruvec, idx, -1); | |
1148 | } | |
1149 | ||
1150 | static inline void __inc_lruvec_page_state(struct page *page, | |
1151 | enum node_stat_item idx) | |
1152 | { | |
1153 | __mod_lruvec_page_state(page, idx, 1); | |
1154 | } | |
1155 | ||
1156 | static inline void __dec_lruvec_page_state(struct page *page, | |
1157 | enum node_stat_item idx) | |
1158 | { | |
1159 | __mod_lruvec_page_state(page, 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_state(struct mem_cgroup *memcg, |
04fecbf5 | 1164 | int idx) |
00f3ca2c JW |
1165 | { |
1166 | mod_memcg_state(memcg, 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_state(struct mem_cgroup *memcg, |
04fecbf5 | 1171 | int idx) |
00f3ca2c JW |
1172 | { |
1173 | mod_memcg_state(memcg, idx, -1); | |
1174 | } | |
1175 | ||
04fecbf5 | 1176 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1177 | static inline void inc_memcg_page_state(struct page *page, |
04fecbf5 | 1178 | int idx) |
00f3ca2c JW |
1179 | { |
1180 | mod_memcg_page_state(page, idx, 1); | |
1181 | } | |
1182 | ||
04fecbf5 | 1183 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1184 | static inline void dec_memcg_page_state(struct page *page, |
04fecbf5 | 1185 | int idx) |
00f3ca2c JW |
1186 | { |
1187 | mod_memcg_page_state(page, idx, -1); | |
1188 | } | |
1189 | ||
1190 | static inline void inc_lruvec_state(struct lruvec *lruvec, | |
1191 | enum node_stat_item idx) | |
1192 | { | |
1193 | mod_lruvec_state(lruvec, idx, 1); | |
1194 | } | |
1195 | ||
1196 | static inline void dec_lruvec_state(struct lruvec *lruvec, | |
1197 | enum node_stat_item idx) | |
1198 | { | |
1199 | mod_lruvec_state(lruvec, idx, -1); | |
1200 | } | |
1201 | ||
1202 | static inline void inc_lruvec_page_state(struct page *page, | |
1203 | enum node_stat_item idx) | |
1204 | { | |
1205 | mod_lruvec_page_state(page, idx, 1); | |
1206 | } | |
1207 | ||
1208 | static inline void dec_lruvec_page_state(struct page *page, | |
1209 | enum node_stat_item idx) | |
1210 | { | |
1211 | mod_lruvec_page_state(page, idx, -1); | |
1212 | } | |
1213 | ||
52ebea74 | 1214 | #ifdef CONFIG_CGROUP_WRITEBACK |
841710aa | 1215 | |
841710aa | 1216 | struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); |
c5edf9cd TH |
1217 | void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, |
1218 | unsigned long *pheadroom, unsigned long *pdirty, | |
1219 | unsigned long *pwriteback); | |
841710aa TH |
1220 | |
1221 | #else /* CONFIG_CGROUP_WRITEBACK */ | |
1222 | ||
1223 | static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) | |
1224 | { | |
1225 | return NULL; | |
1226 | } | |
1227 | ||
c2aa723a | 1228 | static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, |
c5edf9cd TH |
1229 | unsigned long *pfilepages, |
1230 | unsigned long *pheadroom, | |
c2aa723a TH |
1231 | unsigned long *pdirty, |
1232 | unsigned long *pwriteback) | |
1233 | { | |
1234 | } | |
1235 | ||
841710aa | 1236 | #endif /* CONFIG_CGROUP_WRITEBACK */ |
52ebea74 | 1237 | |
e1aab161 | 1238 | struct sock; |
baac50bb JW |
1239 | bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
1240 | void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); | |
d886f4e4 | 1241 | #ifdef CONFIG_MEMCG |
ef12947c JW |
1242 | extern struct static_key_false memcg_sockets_enabled_key; |
1243 | #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key) | |
2d758073 JW |
1244 | void mem_cgroup_sk_alloc(struct sock *sk); |
1245 | void mem_cgroup_sk_free(struct sock *sk); | |
baac50bb | 1246 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c | 1247 | { |
0db15298 | 1248 | if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure) |
8e8ae645 | 1249 | return true; |
8e8ae645 JW |
1250 | do { |
1251 | if (time_before(jiffies, memcg->socket_pressure)) | |
1252 | return true; | |
1253 | } while ((memcg = parent_mem_cgroup(memcg))); | |
1254 | return false; | |
e805605c JW |
1255 | } |
1256 | #else | |
80e95fe0 | 1257 | #define mem_cgroup_sockets_enabled 0 |
2d758073 JW |
1258 | static inline void mem_cgroup_sk_alloc(struct sock *sk) { }; |
1259 | static inline void mem_cgroup_sk_free(struct sock *sk) { }; | |
baac50bb | 1260 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c JW |
1261 | { |
1262 | return false; | |
1263 | } | |
1264 | #endif | |
7ae1e1d0 | 1265 | |
45264778 VD |
1266 | struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); |
1267 | void memcg_kmem_put_cache(struct kmem_cache *cachep); | |
9b6f7e16 RG |
1268 | |
1269 | #ifdef CONFIG_MEMCG_KMEM | |
60cd4bcd SB |
1270 | int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order); |
1271 | void __memcg_kmem_uncharge(struct page *page, int order); | |
1272 | int __memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, | |
1273 | struct mem_cgroup *memcg); | |
49a18eae RG |
1274 | void __memcg_kmem_uncharge_memcg(struct mem_cgroup *memcg, |
1275 | unsigned int nr_pages); | |
45264778 | 1276 | |
ef12947c | 1277 | extern struct static_key_false memcg_kmem_enabled_key; |
17cc4dfe | 1278 | extern struct workqueue_struct *memcg_kmem_cache_wq; |
749c5415 | 1279 | |
dbcf73e2 | 1280 | extern int memcg_nr_cache_ids; |
64219994 MH |
1281 | void memcg_get_cache_ids(void); |
1282 | void memcg_put_cache_ids(void); | |
ebe945c2 GC |
1283 | |
1284 | /* | |
1285 | * Helper macro to loop through all memcg-specific caches. Callers must still | |
1286 | * check if the cache is valid (it is either valid or NULL). | |
1287 | * the slab_mutex must be held when looping through those caches | |
1288 | */ | |
749c5415 | 1289 | #define for_each_memcg_cache_index(_idx) \ |
dbcf73e2 | 1290 | for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) |
749c5415 | 1291 | |
7ae1e1d0 GC |
1292 | static inline bool memcg_kmem_enabled(void) |
1293 | { | |
ef12947c | 1294 | return static_branch_unlikely(&memcg_kmem_enabled_key); |
7ae1e1d0 GC |
1295 | } |
1296 | ||
60cd4bcd SB |
1297 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
1298 | { | |
1299 | if (memcg_kmem_enabled()) | |
1300 | return __memcg_kmem_charge(page, gfp, order); | |
1301 | return 0; | |
1302 | } | |
1303 | ||
1304 | static inline void memcg_kmem_uncharge(struct page *page, int order) | |
1305 | { | |
1306 | if (memcg_kmem_enabled()) | |
1307 | __memcg_kmem_uncharge(page, order); | |
1308 | } | |
1309 | ||
1310 | static inline int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, | |
1311 | int order, struct mem_cgroup *memcg) | |
1312 | { | |
1313 | if (memcg_kmem_enabled()) | |
1314 | return __memcg_kmem_charge_memcg(page, gfp, order, memcg); | |
1315 | return 0; | |
1316 | } | |
49a18eae RG |
1317 | |
1318 | static inline void memcg_kmem_uncharge_memcg(struct page *page, int order, | |
1319 | struct mem_cgroup *memcg) | |
1320 | { | |
1321 | if (memcg_kmem_enabled()) | |
1322 | __memcg_kmem_uncharge_memcg(memcg, 1 << order); | |
1323 | } | |
1324 | ||
33398cf2 | 1325 | /* |
9f706d68 | 1326 | * helper for accessing a memcg's index. It will be used as an index in the |
33398cf2 MH |
1327 | * child cache array in kmem_cache, and also to derive its name. This function |
1328 | * will return -1 when this is not a kmem-limited memcg. | |
1329 | */ | |
1330 | static inline int memcg_cache_id(struct mem_cgroup *memcg) | |
1331 | { | |
1332 | return memcg ? memcg->kmemcg_id : -1; | |
1333 | } | |
5722d094 | 1334 | |
0a4465d3 KT |
1335 | extern int memcg_expand_shrinker_maps(int new_id); |
1336 | ||
fae91d6d KT |
1337 | extern void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
1338 | int nid, int shrinker_id); | |
7ae1e1d0 | 1339 | #else |
9b6f7e16 RG |
1340 | |
1341 | static inline int memcg_kmem_charge(struct page *page, gfp_t gfp, int order) | |
1342 | { | |
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | static inline void memcg_kmem_uncharge(struct page *page, int order) | |
1347 | { | |
1348 | } | |
1349 | ||
60cd4bcd SB |
1350 | static inline int __memcg_kmem_charge(struct page *page, gfp_t gfp, int order) |
1351 | { | |
1352 | return 0; | |
1353 | } | |
1354 | ||
1355 | static inline void __memcg_kmem_uncharge(struct page *page, int order) | |
1356 | { | |
1357 | } | |
1358 | ||
749c5415 GC |
1359 | #define for_each_memcg_cache_index(_idx) \ |
1360 | for (; NULL; ) | |
1361 | ||
b9ce5ef4 GC |
1362 | static inline bool memcg_kmem_enabled(void) |
1363 | { | |
1364 | return false; | |
1365 | } | |
1366 | ||
2633d7a0 GC |
1367 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
1368 | { | |
1369 | return -1; | |
1370 | } | |
1371 | ||
05257a1a VD |
1372 | static inline void memcg_get_cache_ids(void) |
1373 | { | |
1374 | } | |
1375 | ||
1376 | static inline void memcg_put_cache_ids(void) | |
1377 | { | |
1378 | } | |
1379 | ||
fae91d6d KT |
1380 | static inline void memcg_set_shrinker_bit(struct mem_cgroup *memcg, |
1381 | int nid, int shrinker_id) { } | |
84c07d11 | 1382 | #endif /* CONFIG_MEMCG_KMEM */ |
127424c8 | 1383 | |
8cdea7c0 | 1384 | #endif /* _LINUX_MEMCONTROL_H */ |