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8cdea7c0 BS |
1 | /* memcontrol.h - Memory Controller |
2 | * | |
3 | * Copyright IBM Corporation, 2007 | |
4 | * Author Balbir Singh <balbir@linux.vnet.ibm.com> | |
5 | * | |
78fb7466 PE |
6 | * Copyright 2007 OpenVZ SWsoft Inc |
7 | * Author: Pavel Emelianov <xemul@openvz.org> | |
8 | * | |
8cdea7c0 BS |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | */ | |
19 | ||
20 | #ifndef _LINUX_MEMCONTROL_H | |
21 | #define _LINUX_MEMCONTROL_H | |
f8d66542 | 22 | #include <linux/cgroup.h> |
456f998e | 23 | #include <linux/vm_event_item.h> |
7ae1e1d0 | 24 | #include <linux/hardirq.h> |
a8964b9b | 25 | #include <linux/jump_label.h> |
33398cf2 MH |
26 | #include <linux/page_counter.h> |
27 | #include <linux/vmpressure.h> | |
28 | #include <linux/eventfd.h> | |
00f3ca2c JW |
29 | #include <linux/mm.h> |
30 | #include <linux/vmstat.h> | |
33398cf2 | 31 | #include <linux/writeback.h> |
fdf1cdb9 | 32 | #include <linux/page-flags.h> |
456f998e | 33 | |
78fb7466 | 34 | struct mem_cgroup; |
8697d331 BS |
35 | struct page; |
36 | struct mm_struct; | |
2633d7a0 | 37 | struct kmem_cache; |
78fb7466 | 38 | |
71cd3113 JW |
39 | /* Cgroup-specific page state, on top of universal node page state */ |
40 | enum memcg_stat_item { | |
41 | MEMCG_CACHE = NR_VM_NODE_STAT_ITEMS, | |
42 | MEMCG_RSS, | |
43 | MEMCG_RSS_HUGE, | |
44 | MEMCG_SWAP, | |
45 | MEMCG_SOCK, | |
46 | /* XXX: why are these zone and not node counters? */ | |
47 | MEMCG_KERNEL_STACK_KB, | |
b2807f07 | 48 | MEMCG_NR_STAT, |
2a7106f2 GT |
49 | }; |
50 | ||
e27be240 JW |
51 | enum memcg_memory_event { |
52 | MEMCG_LOW, | |
71cd3113 JW |
53 | MEMCG_HIGH, |
54 | MEMCG_MAX, | |
55 | MEMCG_OOM, | |
fe6bdfc8 | 56 | MEMCG_OOM_KILL, |
f3a53a3a TH |
57 | MEMCG_SWAP_MAX, |
58 | MEMCG_SWAP_FAIL, | |
e27be240 | 59 | MEMCG_NR_MEMORY_EVENTS, |
71cd3113 JW |
60 | }; |
61 | ||
bf8d5d52 RG |
62 | enum mem_cgroup_protection { |
63 | MEMCG_PROT_NONE, | |
64 | MEMCG_PROT_LOW, | |
65 | MEMCG_PROT_MIN, | |
66 | }; | |
67 | ||
5660048c | 68 | struct mem_cgroup_reclaim_cookie { |
ef8f2327 | 69 | pg_data_t *pgdat; |
5660048c JW |
70 | int priority; |
71 | unsigned int generation; | |
72 | }; | |
73 | ||
71cd3113 JW |
74 | #ifdef CONFIG_MEMCG |
75 | ||
76 | #define MEM_CGROUP_ID_SHIFT 16 | |
77 | #define MEM_CGROUP_ID_MAX USHRT_MAX | |
78 | ||
79 | struct mem_cgroup_id { | |
80 | int id; | |
81 | atomic_t ref; | |
82 | }; | |
83 | ||
33398cf2 MH |
84 | /* |
85 | * Per memcg event counter is incremented at every pagein/pageout. With THP, | |
86 | * it will be incremated by the number of pages. This counter is used for | |
87 | * for trigger some periodic events. This is straightforward and better | |
88 | * than using jiffies etc. to handle periodic memcg event. | |
89 | */ | |
90 | enum mem_cgroup_events_target { | |
91 | MEM_CGROUP_TARGET_THRESH, | |
92 | MEM_CGROUP_TARGET_SOFTLIMIT, | |
93 | MEM_CGROUP_TARGET_NUMAINFO, | |
94 | MEM_CGROUP_NTARGETS, | |
95 | }; | |
96 | ||
33398cf2 | 97 | struct mem_cgroup_stat_cpu { |
b2807f07 | 98 | long count[MEMCG_NR_STAT]; |
e27be240 | 99 | unsigned long events[NR_VM_EVENT_ITEMS]; |
33398cf2 MH |
100 | unsigned long nr_page_events; |
101 | unsigned long targets[MEM_CGROUP_NTARGETS]; | |
102 | }; | |
103 | ||
104 | struct mem_cgroup_reclaim_iter { | |
105 | struct mem_cgroup *position; | |
106 | /* scan generation, increased every round-trip */ | |
107 | unsigned int generation; | |
108 | }; | |
109 | ||
00f3ca2c JW |
110 | struct lruvec_stat { |
111 | long count[NR_VM_NODE_STAT_ITEMS]; | |
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]; | |
122 | ||
b4536f0c | 123 | unsigned long lru_zone_size[MAX_NR_ZONES][NR_LRU_LISTS]; |
33398cf2 MH |
124 | |
125 | struct mem_cgroup_reclaim_iter iter[DEF_PRIORITY + 1]; | |
126 | ||
127 | struct rb_node tree_node; /* RB tree node */ | |
128 | unsigned long usage_in_excess;/* Set to the value by which */ | |
129 | /* the soft limit is exceeded*/ | |
130 | bool on_tree; | |
e3c1ac58 AR |
131 | bool congested; /* memcg has many dirty pages */ |
132 | /* backed by a congested BDI */ | |
133 | ||
33398cf2 MH |
134 | struct mem_cgroup *memcg; /* Back pointer, we cannot */ |
135 | /* use container_of */ | |
136 | }; | |
137 | ||
33398cf2 MH |
138 | struct mem_cgroup_threshold { |
139 | struct eventfd_ctx *eventfd; | |
140 | unsigned long threshold; | |
141 | }; | |
142 | ||
143 | /* For threshold */ | |
144 | struct mem_cgroup_threshold_ary { | |
145 | /* An array index points to threshold just below or equal to usage. */ | |
146 | int current_threshold; | |
147 | /* Size of entries[] */ | |
148 | unsigned int size; | |
149 | /* Array of thresholds */ | |
150 | struct mem_cgroup_threshold entries[0]; | |
151 | }; | |
152 | ||
153 | struct mem_cgroup_thresholds { | |
154 | /* Primary thresholds array */ | |
155 | struct mem_cgroup_threshold_ary *primary; | |
156 | /* | |
157 | * Spare threshold array. | |
158 | * This is needed to make mem_cgroup_unregister_event() "never fail". | |
159 | * It must be able to store at least primary->size - 1 entries. | |
160 | */ | |
161 | struct mem_cgroup_threshold_ary *spare; | |
162 | }; | |
163 | ||
567e9ab2 JW |
164 | enum memcg_kmem_state { |
165 | KMEM_NONE, | |
166 | KMEM_ALLOCATED, | |
167 | KMEM_ONLINE, | |
168 | }; | |
169 | ||
e81bf979 AL |
170 | #if defined(CONFIG_SMP) |
171 | struct memcg_padding { | |
172 | char x[0]; | |
173 | } ____cacheline_internodealigned_in_smp; | |
174 | #define MEMCG_PADDING(name) struct memcg_padding name; | |
175 | #else | |
176 | #define MEMCG_PADDING(name) | |
177 | #endif | |
178 | ||
33398cf2 MH |
179 | /* |
180 | * The memory controller data structure. The memory controller controls both | |
181 | * page cache and RSS per cgroup. We would eventually like to provide | |
182 | * statistics based on the statistics developed by Rik Van Riel for clock-pro, | |
183 | * to help the administrator determine what knobs to tune. | |
184 | */ | |
185 | struct mem_cgroup { | |
186 | struct cgroup_subsys_state css; | |
187 | ||
73f576c0 JW |
188 | /* Private memcg ID. Used to ID objects that outlive the cgroup */ |
189 | struct mem_cgroup_id id; | |
190 | ||
33398cf2 MH |
191 | /* Accounted resources */ |
192 | struct page_counter memory; | |
37e84351 | 193 | struct page_counter swap; |
0db15298 JW |
194 | |
195 | /* Legacy consumer-oriented counters */ | |
33398cf2 MH |
196 | struct page_counter memsw; |
197 | struct page_counter kmem; | |
0db15298 | 198 | struct page_counter tcpmem; |
33398cf2 | 199 | |
23067153 | 200 | /* Upper bound of normal memory consumption range */ |
33398cf2 MH |
201 | unsigned long high; |
202 | ||
f7e1cb6e JW |
203 | /* Range enforcement for interrupt charges */ |
204 | struct work_struct high_work; | |
205 | ||
33398cf2 MH |
206 | unsigned long soft_limit; |
207 | ||
208 | /* vmpressure notifications */ | |
209 | struct vmpressure vmpressure; | |
210 | ||
33398cf2 MH |
211 | /* |
212 | * Should the accounting and control be hierarchical, per subtree? | |
213 | */ | |
214 | bool use_hierarchy; | |
215 | ||
216 | /* protected by memcg_oom_lock */ | |
217 | bool oom_lock; | |
218 | int under_oom; | |
219 | ||
220 | int swappiness; | |
221 | /* OOM-Killer disable */ | |
222 | int oom_kill_disable; | |
223 | ||
e27be240 | 224 | /* memory.events */ |
472912a2 TH |
225 | struct cgroup_file events_file; |
226 | ||
f3a53a3a TH |
227 | /* handle for "memory.swap.events" */ |
228 | struct cgroup_file swap_events_file; | |
229 | ||
33398cf2 MH |
230 | /* protect arrays of thresholds */ |
231 | struct mutex thresholds_lock; | |
232 | ||
233 | /* thresholds for memory usage. RCU-protected */ | |
234 | struct mem_cgroup_thresholds thresholds; | |
235 | ||
236 | /* thresholds for mem+swap usage. RCU-protected */ | |
237 | struct mem_cgroup_thresholds memsw_thresholds; | |
238 | ||
239 | /* For oom notifier event fd */ | |
240 | struct list_head oom_notify; | |
241 | ||
242 | /* | |
243 | * Should we move charges of a task when a task is moved into this | |
244 | * mem_cgroup ? And what type of charges should we move ? | |
245 | */ | |
246 | unsigned long move_charge_at_immigrate; | |
e81bf979 AL |
247 | /* taken only while moving_account > 0 */ |
248 | spinlock_t move_lock; | |
249 | unsigned long move_lock_flags; | |
250 | ||
251 | MEMCG_PADDING(_pad1_); | |
252 | ||
33398cf2 MH |
253 | /* |
254 | * set > 0 if pages under this cgroup are moving to other cgroup. | |
255 | */ | |
256 | atomic_t moving_account; | |
33398cf2 | 257 | struct task_struct *move_lock_task; |
a983b5eb | 258 | |
e27be240 | 259 | /* memory.stat */ |
a983b5eb | 260 | struct mem_cgroup_stat_cpu __percpu *stat_cpu; |
e81bf979 AL |
261 | |
262 | MEMCG_PADDING(_pad2_); | |
263 | ||
a983b5eb | 264 | atomic_long_t stat[MEMCG_NR_STAT]; |
e27be240 | 265 | atomic_long_t events[NR_VM_EVENT_ITEMS]; |
e81bf979 | 266 | atomic_long_t memory_events[MEMCG_NR_MEMORY_EVENTS]; |
33398cf2 | 267 | |
d886f4e4 JW |
268 | unsigned long socket_pressure; |
269 | ||
270 | /* Legacy tcp memory accounting */ | |
0db15298 JW |
271 | bool tcpmem_active; |
272 | int tcpmem_pressure; | |
d886f4e4 | 273 | |
127424c8 | 274 | #ifndef CONFIG_SLOB |
33398cf2 MH |
275 | /* Index in the kmem_cache->memcg_params.memcg_caches array */ |
276 | int kmemcg_id; | |
567e9ab2 | 277 | enum memcg_kmem_state kmem_state; |
bc2791f8 | 278 | struct list_head kmem_caches; |
33398cf2 MH |
279 | #endif |
280 | ||
281 | int last_scanned_node; | |
282 | #if MAX_NUMNODES > 1 | |
283 | nodemask_t scan_nodes; | |
284 | atomic_t numainfo_events; | |
285 | atomic_t numainfo_updating; | |
286 | #endif | |
287 | ||
288 | #ifdef CONFIG_CGROUP_WRITEBACK | |
289 | struct list_head cgwb_list; | |
290 | struct wb_domain cgwb_domain; | |
291 | #endif | |
292 | ||
293 | /* List of events which userspace want to receive */ | |
294 | struct list_head event_list; | |
295 | spinlock_t event_list_lock; | |
296 | ||
297 | struct mem_cgroup_per_node *nodeinfo[0]; | |
298 | /* WARNING: nodeinfo must be the last member here */ | |
299 | }; | |
7d828602 | 300 | |
a983b5eb JW |
301 | /* |
302 | * size of first charge trial. "32" comes from vmscan.c's magic value. | |
303 | * TODO: maybe necessary to use big numbers in big irons. | |
304 | */ | |
305 | #define MEMCG_CHARGE_BATCH 32U | |
306 | ||
7d828602 | 307 | extern struct mem_cgroup *root_mem_cgroup; |
56161634 | 308 | |
23047a96 JW |
309 | static inline bool mem_cgroup_disabled(void) |
310 | { | |
311 | return !cgroup_subsys_enabled(memory_cgrp_subsys); | |
312 | } | |
313 | ||
bf8d5d52 RG |
314 | enum mem_cgroup_protection mem_cgroup_protected(struct mem_cgroup *root, |
315 | struct mem_cgroup *memcg); | |
241994ed | 316 | |
00501b53 | 317 | int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
f627c2f5 KS |
318 | gfp_t gfp_mask, struct mem_cgroup **memcgp, |
319 | bool compound); | |
2cf85583 TH |
320 | int mem_cgroup_try_charge_delay(struct page *page, struct mm_struct *mm, |
321 | gfp_t gfp_mask, struct mem_cgroup **memcgp, | |
322 | bool compound); | |
00501b53 | 323 | void mem_cgroup_commit_charge(struct page *page, struct mem_cgroup *memcg, |
f627c2f5 KS |
324 | bool lrucare, bool compound); |
325 | void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, | |
326 | bool compound); | |
0a31bc97 | 327 | void mem_cgroup_uncharge(struct page *page); |
747db954 | 328 | void mem_cgroup_uncharge_list(struct list_head *page_list); |
569b846d | 329 | |
6a93ca8f | 330 | void mem_cgroup_migrate(struct page *oldpage, struct page *newpage); |
569b846d | 331 | |
ef8f2327 MG |
332 | static struct mem_cgroup_per_node * |
333 | mem_cgroup_nodeinfo(struct mem_cgroup *memcg, int nid) | |
55779ec7 | 334 | { |
ef8f2327 | 335 | return memcg->nodeinfo[nid]; |
55779ec7 JW |
336 | } |
337 | ||
338 | /** | |
a9dd0a83 MG |
339 | * mem_cgroup_lruvec - get the lru list vector for a node or a memcg zone |
340 | * @node: node of the wanted lruvec | |
55779ec7 JW |
341 | * @memcg: memcg of the wanted lruvec |
342 | * | |
a9dd0a83 MG |
343 | * Returns the lru list vector holding pages for a given @node or a given |
344 | * @memcg and @zone. This can be the node lruvec, if the memory controller | |
55779ec7 JW |
345 | * is disabled. |
346 | */ | |
a9dd0a83 | 347 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 348 | struct mem_cgroup *memcg) |
55779ec7 | 349 | { |
ef8f2327 | 350 | struct mem_cgroup_per_node *mz; |
55779ec7 JW |
351 | struct lruvec *lruvec; |
352 | ||
353 | if (mem_cgroup_disabled()) { | |
a9dd0a83 | 354 | lruvec = node_lruvec(pgdat); |
55779ec7 JW |
355 | goto out; |
356 | } | |
357 | ||
ef8f2327 | 358 | mz = mem_cgroup_nodeinfo(memcg, pgdat->node_id); |
55779ec7 JW |
359 | lruvec = &mz->lruvec; |
360 | out: | |
361 | /* | |
362 | * Since a node can be onlined after the mem_cgroup was created, | |
599d0c95 | 363 | * we have to be prepared to initialize lruvec->pgdat here; |
55779ec7 JW |
364 | * and if offlined then reonlined, we need to reinitialize it. |
365 | */ | |
ef8f2327 MG |
366 | if (unlikely(lruvec->pgdat != pgdat)) |
367 | lruvec->pgdat = pgdat; | |
55779ec7 JW |
368 | return lruvec; |
369 | } | |
370 | ||
599d0c95 | 371 | struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *); |
c9b0ed51 | 372 | |
2314b42d | 373 | bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg); |
64219994 | 374 | struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
e993d905 | 375 | |
d46eb14b SB |
376 | struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm); |
377 | ||
33398cf2 MH |
378 | static inline |
379 | struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ | |
380 | return css ? container_of(css, struct mem_cgroup, css) : NULL; | |
381 | } | |
382 | ||
dc0b5864 RG |
383 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
384 | { | |
d46eb14b SB |
385 | if (memcg) |
386 | css_put(&memcg->css); | |
dc0b5864 RG |
387 | } |
388 | ||
8e8ae645 JW |
389 | #define mem_cgroup_from_counter(counter, member) \ |
390 | container_of(counter, struct mem_cgroup, member) | |
391 | ||
33398cf2 MH |
392 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
393 | struct mem_cgroup *, | |
394 | struct mem_cgroup_reclaim_cookie *); | |
395 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); | |
7c5f64f8 VD |
396 | int mem_cgroup_scan_tasks(struct mem_cgroup *, |
397 | int (*)(struct task_struct *, void *), void *); | |
33398cf2 | 398 | |
23047a96 JW |
399 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
400 | { | |
401 | if (mem_cgroup_disabled()) | |
402 | return 0; | |
403 | ||
73f576c0 | 404 | return memcg->id.id; |
23047a96 | 405 | } |
73f576c0 | 406 | struct mem_cgroup *mem_cgroup_from_id(unsigned short id); |
23047a96 | 407 | |
2262185c RG |
408 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
409 | { | |
410 | struct mem_cgroup_per_node *mz; | |
411 | ||
412 | if (mem_cgroup_disabled()) | |
413 | return NULL; | |
414 | ||
415 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
416 | return mz->memcg; | |
417 | } | |
418 | ||
8e8ae645 JW |
419 | /** |
420 | * parent_mem_cgroup - find the accounting parent of a memcg | |
421 | * @memcg: memcg whose parent to find | |
422 | * | |
423 | * Returns the parent memcg, or NULL if this is the root or the memory | |
424 | * controller is in legacy no-hierarchy mode. | |
425 | */ | |
426 | static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) | |
427 | { | |
428 | if (!memcg->memory.parent) | |
429 | return NULL; | |
430 | return mem_cgroup_from_counter(memcg->memory.parent, memory); | |
431 | } | |
432 | ||
33398cf2 MH |
433 | static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg, |
434 | struct mem_cgroup *root) | |
435 | { | |
436 | if (root == memcg) | |
437 | return true; | |
438 | if (!root->use_hierarchy) | |
439 | return false; | |
440 | return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup); | |
441 | } | |
e1aab161 | 442 | |
2314b42d JW |
443 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
444 | struct mem_cgroup *memcg) | |
2e4d4091 | 445 | { |
587af308 | 446 | struct mem_cgroup *task_memcg; |
413918bb | 447 | bool match = false; |
c3ac9a8a | 448 | |
2e4d4091 | 449 | rcu_read_lock(); |
587af308 | 450 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
413918bb | 451 | if (task_memcg) |
2314b42d | 452 | match = mem_cgroup_is_descendant(task_memcg, memcg); |
2e4d4091 | 453 | rcu_read_unlock(); |
c3ac9a8a | 454 | return match; |
2e4d4091 | 455 | } |
8a9f3ccd | 456 | |
64219994 | 457 | struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page); |
2fc04524 | 458 | ino_t page_cgroup_ino(struct page *page); |
d324236b | 459 | |
eb01aaab VD |
460 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
461 | { | |
462 | if (mem_cgroup_disabled()) | |
463 | return true; | |
464 | return !!(memcg->css.flags & CSS_ONLINE); | |
465 | } | |
466 | ||
58ae83db KH |
467 | /* |
468 | * For memory reclaim. | |
469 | */ | |
889976db | 470 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
33398cf2 MH |
471 | |
472 | void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, | |
b4536f0c | 473 | int zid, int nr_pages); |
33398cf2 | 474 | |
0a6b76dd VD |
475 | unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, |
476 | int nid, unsigned int lru_mask); | |
477 | ||
33398cf2 MH |
478 | static inline |
479 | unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) | |
480 | { | |
ef8f2327 | 481 | struct mem_cgroup_per_node *mz; |
b4536f0c MH |
482 | unsigned long nr_pages = 0; |
483 | int zid; | |
33398cf2 | 484 | |
ef8f2327 | 485 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
b4536f0c MH |
486 | for (zid = 0; zid < MAX_NR_ZONES; zid++) |
487 | nr_pages += mz->lru_zone_size[zid][lru]; | |
488 | return nr_pages; | |
489 | } | |
490 | ||
491 | static inline | |
492 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
493 | enum lru_list lru, int zone_idx) | |
494 | { | |
495 | struct mem_cgroup_per_node *mz; | |
496 | ||
497 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
498 | return mz->lru_zone_size[zone_idx][lru]; | |
33398cf2 MH |
499 | } |
500 | ||
b23afb93 TH |
501 | void mem_cgroup_handle_over_high(void); |
502 | ||
bbec2e15 | 503 | unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); |
7c5f64f8 | 504 | |
64219994 MH |
505 | void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, |
506 | struct task_struct *p); | |
58ae83db | 507 | |
49426420 | 508 | static inline void mem_cgroup_oom_enable(void) |
519e5247 | 509 | { |
626ebc41 TH |
510 | WARN_ON(current->memcg_may_oom); |
511 | current->memcg_may_oom = 1; | |
519e5247 JW |
512 | } |
513 | ||
49426420 | 514 | static inline void mem_cgroup_oom_disable(void) |
519e5247 | 515 | { |
626ebc41 TH |
516 | WARN_ON(!current->memcg_may_oom); |
517 | current->memcg_may_oom = 0; | |
519e5247 JW |
518 | } |
519 | ||
3812c8c8 JW |
520 | static inline bool task_in_memcg_oom(struct task_struct *p) |
521 | { | |
626ebc41 | 522 | return p->memcg_in_oom; |
3812c8c8 JW |
523 | } |
524 | ||
49426420 | 525 | bool mem_cgroup_oom_synchronize(bool wait); |
3812c8c8 | 526 | |
c255a458 | 527 | #ifdef CONFIG_MEMCG_SWAP |
c077719b KH |
528 | extern int do_swap_account; |
529 | #endif | |
f8d66542 | 530 | |
739f79fc JW |
531 | struct mem_cgroup *lock_page_memcg(struct page *page); |
532 | void __unlock_page_memcg(struct mem_cgroup *memcg); | |
62cccb8c | 533 | void unlock_page_memcg(struct page *page); |
d7365e78 | 534 | |
04fecbf5 | 535 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
ccda7f43 | 536 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
04fecbf5 | 537 | int idx) |
2a2e4885 | 538 | { |
a983b5eb JW |
539 | long x = atomic_long_read(&memcg->stat[idx]); |
540 | #ifdef CONFIG_SMP | |
541 | if (x < 0) | |
542 | x = 0; | |
543 | #endif | |
544 | return x; | |
2a2e4885 JW |
545 | } |
546 | ||
04fecbf5 | 547 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 548 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 549 | int idx, int val) |
2a2e4885 | 550 | { |
a983b5eb JW |
551 | long x; |
552 | ||
553 | if (mem_cgroup_disabled()) | |
554 | return; | |
555 | ||
556 | x = val + __this_cpu_read(memcg->stat_cpu->count[idx]); | |
557 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { | |
558 | atomic_long_add(x, &memcg->stat[idx]); | |
559 | x = 0; | |
560 | } | |
561 | __this_cpu_write(memcg->stat_cpu->count[idx], x); | |
2a2e4885 JW |
562 | } |
563 | ||
04fecbf5 | 564 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 565 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 566 | int idx, int val) |
2a2e4885 | 567 | { |
c3cc3911 JW |
568 | unsigned long flags; |
569 | ||
570 | local_irq_save(flags); | |
a983b5eb | 571 | __mod_memcg_state(memcg, idx, val); |
c3cc3911 | 572 | local_irq_restore(flags); |
2a2e4885 JW |
573 | } |
574 | ||
33398cf2 | 575 | /** |
ccda7f43 | 576 | * mod_memcg_page_state - update page state statistics |
62cccb8c | 577 | * @page: the page |
33398cf2 MH |
578 | * @idx: page state item to account |
579 | * @val: number of pages (positive or negative) | |
580 | * | |
fdf1cdb9 JW |
581 | * The @page must be locked or the caller must use lock_page_memcg() |
582 | * to prevent double accounting when the page is concurrently being | |
583 | * moved to another memcg: | |
81f8c3a4 | 584 | * |
fdf1cdb9 | 585 | * lock_page(page) or lock_page_memcg(page) |
81f8c3a4 | 586 | * if (TestClearPageState(page)) |
ccda7f43 | 587 | * mod_memcg_page_state(page, state, -1); |
fdf1cdb9 | 588 | * unlock_page(page) or unlock_page_memcg(page) |
2a2e4885 JW |
589 | * |
590 | * Kernel pages are an exception to this, since they'll never move. | |
33398cf2 | 591 | */ |
00f3ca2c | 592 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 593 | int idx, int val) |
00f3ca2c JW |
594 | { |
595 | if (page->mem_cgroup) | |
596 | __mod_memcg_state(page->mem_cgroup, idx, val); | |
597 | } | |
598 | ||
ccda7f43 | 599 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 600 | int idx, int val) |
33398cf2 | 601 | { |
62cccb8c | 602 | if (page->mem_cgroup) |
ccda7f43 | 603 | mod_memcg_state(page->mem_cgroup, idx, val); |
33398cf2 MH |
604 | } |
605 | ||
00f3ca2c JW |
606 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
607 | enum node_stat_item idx) | |
2a7106f2 | 608 | { |
00f3ca2c | 609 | struct mem_cgroup_per_node *pn; |
a983b5eb | 610 | long x; |
00f3ca2c JW |
611 | |
612 | if (mem_cgroup_disabled()) | |
613 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
614 | ||
615 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
a983b5eb JW |
616 | x = atomic_long_read(&pn->lruvec_stat[idx]); |
617 | #ifdef CONFIG_SMP | |
618 | if (x < 0) | |
619 | x = 0; | |
620 | #endif | |
621 | return x; | |
2a7106f2 GT |
622 | } |
623 | ||
00f3ca2c JW |
624 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
625 | enum node_stat_item idx, int val) | |
2a7106f2 | 626 | { |
00f3ca2c | 627 | struct mem_cgroup_per_node *pn; |
a983b5eb | 628 | long x; |
00f3ca2c | 629 | |
28454265 | 630 | /* Update node */ |
00f3ca2c | 631 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
28454265 | 632 | |
00f3ca2c JW |
633 | if (mem_cgroup_disabled()) |
634 | return; | |
28454265 | 635 | |
00f3ca2c | 636 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
28454265 JW |
637 | |
638 | /* Update memcg */ | |
00f3ca2c | 639 | __mod_memcg_state(pn->memcg, idx, val); |
28454265 JW |
640 | |
641 | /* Update lruvec */ | |
a983b5eb JW |
642 | x = val + __this_cpu_read(pn->lruvec_stat_cpu->count[idx]); |
643 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { | |
644 | atomic_long_add(x, &pn->lruvec_stat[idx]); | |
645 | x = 0; | |
646 | } | |
647 | __this_cpu_write(pn->lruvec_stat_cpu->count[idx], x); | |
00f3ca2c JW |
648 | } |
649 | ||
650 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
651 | enum node_stat_item idx, int val) | |
652 | { | |
c3cc3911 JW |
653 | unsigned long flags; |
654 | ||
655 | local_irq_save(flags); | |
28454265 | 656 | __mod_lruvec_state(lruvec, idx, val); |
c3cc3911 | 657 | local_irq_restore(flags); |
00f3ca2c JW |
658 | } |
659 | ||
660 | static inline void __mod_lruvec_page_state(struct page *page, | |
661 | enum node_stat_item idx, int val) | |
662 | { | |
28454265 JW |
663 | pg_data_t *pgdat = page_pgdat(page); |
664 | struct lruvec *lruvec; | |
00f3ca2c | 665 | |
28454265 JW |
666 | /* Untracked pages have no memcg, no lruvec. Update only the node */ |
667 | if (!page->mem_cgroup) { | |
668 | __mod_node_page_state(pgdat, idx, val); | |
00f3ca2c | 669 | return; |
28454265 JW |
670 | } |
671 | ||
672 | lruvec = mem_cgroup_lruvec(pgdat, page->mem_cgroup); | |
673 | __mod_lruvec_state(lruvec, idx, val); | |
00f3ca2c JW |
674 | } |
675 | ||
676 | static inline void mod_lruvec_page_state(struct page *page, | |
677 | enum node_stat_item idx, int val) | |
678 | { | |
c3cc3911 JW |
679 | unsigned long flags; |
680 | ||
681 | local_irq_save(flags); | |
28454265 | 682 | __mod_lruvec_page_state(page, idx, val); |
c3cc3911 | 683 | local_irq_restore(flags); |
2a7106f2 GT |
684 | } |
685 | ||
ef8f2327 | 686 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
687 | gfp_t gfp_mask, |
688 | unsigned long *total_scanned); | |
a63d83f4 | 689 | |
c9019e9b | 690 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
691 | enum vm_event_item idx, |
692 | unsigned long count) | |
c9019e9b | 693 | { |
a983b5eb JW |
694 | unsigned long x; |
695 | ||
696 | if (mem_cgroup_disabled()) | |
697 | return; | |
698 | ||
699 | x = count + __this_cpu_read(memcg->stat_cpu->events[idx]); | |
700 | if (unlikely(x > MEMCG_CHARGE_BATCH)) { | |
701 | atomic_long_add(x, &memcg->events[idx]); | |
702 | x = 0; | |
703 | } | |
704 | __this_cpu_write(memcg->stat_cpu->events[idx], x); | |
c9019e9b JW |
705 | } |
706 | ||
2262185c | 707 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
708 | enum vm_event_item idx, |
709 | unsigned long count) | |
2262185c | 710 | { |
c3cc3911 JW |
711 | unsigned long flags; |
712 | ||
713 | local_irq_save(flags); | |
a983b5eb | 714 | __count_memcg_events(memcg, idx, count); |
c3cc3911 | 715 | local_irq_restore(flags); |
2262185c RG |
716 | } |
717 | ||
718 | static inline void count_memcg_page_event(struct page *page, | |
e27be240 | 719 | enum vm_event_item idx) |
2262185c RG |
720 | { |
721 | if (page->mem_cgroup) | |
722 | count_memcg_events(page->mem_cgroup, idx, 1); | |
723 | } | |
724 | ||
725 | static inline void count_memcg_event_mm(struct mm_struct *mm, | |
726 | enum vm_event_item idx) | |
68ae564b | 727 | { |
33398cf2 MH |
728 | struct mem_cgroup *memcg; |
729 | ||
68ae564b DR |
730 | if (mem_cgroup_disabled()) |
731 | return; | |
33398cf2 MH |
732 | |
733 | rcu_read_lock(); | |
734 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
fe6bdfc8 | 735 | if (likely(memcg)) |
c9019e9b | 736 | count_memcg_events(memcg, idx, 1); |
33398cf2 | 737 | rcu_read_unlock(); |
68ae564b | 738 | } |
c9019e9b | 739 | |
e27be240 JW |
740 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
741 | enum memcg_memory_event event) | |
c9019e9b | 742 | { |
e27be240 | 743 | atomic_long_inc(&memcg->memory_events[event]); |
c9019e9b JW |
744 | cgroup_file_notify(&memcg->events_file); |
745 | } | |
746 | ||
fe6bdfc8 RG |
747 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
748 | enum memcg_memory_event event) | |
749 | { | |
750 | struct mem_cgroup *memcg; | |
751 | ||
752 | if (mem_cgroup_disabled()) | |
753 | return; | |
754 | ||
755 | rcu_read_lock(); | |
756 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
757 | if (likely(memcg)) | |
758 | memcg_memory_event(memcg, event); | |
759 | rcu_read_unlock(); | |
760 | } | |
761 | ||
ca3e0214 | 762 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e94c8a9c | 763 | void mem_cgroup_split_huge_fixup(struct page *head); |
ca3e0214 KH |
764 | #endif |
765 | ||
c255a458 | 766 | #else /* CONFIG_MEMCG */ |
23047a96 JW |
767 | |
768 | #define MEM_CGROUP_ID_SHIFT 0 | |
769 | #define MEM_CGROUP_ID_MAX 0 | |
770 | ||
7a81b88c KH |
771 | struct mem_cgroup; |
772 | ||
23047a96 JW |
773 | static inline bool mem_cgroup_disabled(void) |
774 | { | |
775 | return true; | |
776 | } | |
777 | ||
e27be240 JW |
778 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
779 | enum memcg_memory_event event) | |
241994ed JW |
780 | { |
781 | } | |
782 | ||
fe6bdfc8 RG |
783 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
784 | enum memcg_memory_event event) | |
785 | { | |
786 | } | |
787 | ||
bf8d5d52 RG |
788 | static inline enum mem_cgroup_protection mem_cgroup_protected( |
789 | struct mem_cgroup *root, struct mem_cgroup *memcg) | |
241994ed | 790 | { |
bf8d5d52 | 791 | return MEMCG_PROT_NONE; |
241994ed JW |
792 | } |
793 | ||
00501b53 JW |
794 | static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
795 | gfp_t gfp_mask, | |
f627c2f5 KS |
796 | struct mem_cgroup **memcgp, |
797 | bool compound) | |
7a81b88c | 798 | { |
00501b53 | 799 | *memcgp = NULL; |
7a81b88c KH |
800 | return 0; |
801 | } | |
802 | ||
2cf85583 TH |
803 | static inline int mem_cgroup_try_charge_delay(struct page *page, |
804 | struct mm_struct *mm, | |
805 | gfp_t gfp_mask, | |
806 | struct mem_cgroup **memcgp, | |
807 | bool compound) | |
808 | { | |
809 | *memcgp = NULL; | |
810 | return 0; | |
811 | } | |
812 | ||
00501b53 JW |
813 | static inline void mem_cgroup_commit_charge(struct page *page, |
814 | struct mem_cgroup *memcg, | |
f627c2f5 | 815 | bool lrucare, bool compound) |
7a81b88c KH |
816 | { |
817 | } | |
818 | ||
00501b53 | 819 | static inline void mem_cgroup_cancel_charge(struct page *page, |
f627c2f5 KS |
820 | struct mem_cgroup *memcg, |
821 | bool compound) | |
7a81b88c KH |
822 | { |
823 | } | |
824 | ||
0a31bc97 | 825 | static inline void mem_cgroup_uncharge(struct page *page) |
569b846d KH |
826 | { |
827 | } | |
828 | ||
747db954 | 829 | static inline void mem_cgroup_uncharge_list(struct list_head *page_list) |
8a9f3ccd BS |
830 | { |
831 | } | |
832 | ||
6a93ca8f | 833 | static inline void mem_cgroup_migrate(struct page *old, struct page *new) |
69029cd5 KH |
834 | { |
835 | } | |
836 | ||
a9dd0a83 | 837 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 838 | struct mem_cgroup *memcg) |
08e552c6 | 839 | { |
a9dd0a83 | 840 | return node_lruvec(pgdat); |
08e552c6 KH |
841 | } |
842 | ||
fa9add64 | 843 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
599d0c95 | 844 | struct pglist_data *pgdat) |
66e1707b | 845 | { |
599d0c95 | 846 | return &pgdat->lruvec; |
66e1707b BS |
847 | } |
848 | ||
587af308 | 849 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
c0ff4b85 | 850 | struct mem_cgroup *memcg) |
bed7161a | 851 | { |
587af308 | 852 | return true; |
bed7161a BS |
853 | } |
854 | ||
ffbdccf5 DR |
855 | static inline bool task_in_mem_cgroup(struct task_struct *task, |
856 | const struct mem_cgroup *memcg) | |
4c4a2214 | 857 | { |
ffbdccf5 | 858 | return true; |
4c4a2214 DR |
859 | } |
860 | ||
d46eb14b SB |
861 | static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) |
862 | { | |
863 | return NULL; | |
864 | } | |
865 | ||
dc0b5864 RG |
866 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
867 | { | |
868 | } | |
869 | ||
5660048c JW |
870 | static inline struct mem_cgroup * |
871 | mem_cgroup_iter(struct mem_cgroup *root, | |
872 | struct mem_cgroup *prev, | |
873 | struct mem_cgroup_reclaim_cookie *reclaim) | |
874 | { | |
875 | return NULL; | |
876 | } | |
877 | ||
878 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, | |
879 | struct mem_cgroup *prev) | |
880 | { | |
881 | } | |
882 | ||
7c5f64f8 VD |
883 | static inline int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, |
884 | int (*fn)(struct task_struct *, void *), void *arg) | |
885 | { | |
886 | return 0; | |
887 | } | |
888 | ||
23047a96 | 889 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
f8d66542 | 890 | { |
23047a96 JW |
891 | return 0; |
892 | } | |
893 | ||
894 | static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id) | |
895 | { | |
896 | WARN_ON_ONCE(id); | |
897 | /* XXX: This should always return root_mem_cgroup */ | |
898 | return NULL; | |
f8d66542 | 899 | } |
a636b327 | 900 | |
2262185c RG |
901 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
902 | { | |
903 | return NULL; | |
904 | } | |
905 | ||
eb01aaab | 906 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
14797e23 | 907 | { |
13308ca9 | 908 | return true; |
14797e23 KM |
909 | } |
910 | ||
a3d8e054 | 911 | static inline unsigned long |
4d7dcca2 | 912 | mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) |
a3d8e054 KM |
913 | { |
914 | return 0; | |
915 | } | |
b4536f0c MH |
916 | static inline |
917 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
918 | enum lru_list lru, int zone_idx) | |
919 | { | |
920 | return 0; | |
921 | } | |
a3d8e054 | 922 | |
0a6b76dd VD |
923 | static inline unsigned long |
924 | mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, | |
925 | int nid, unsigned int lru_mask) | |
926 | { | |
927 | return 0; | |
928 | } | |
929 | ||
bbec2e15 | 930 | static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) |
7c5f64f8 VD |
931 | { |
932 | return 0; | |
933 | } | |
934 | ||
e222432b BS |
935 | static inline void |
936 | mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) | |
937 | { | |
938 | } | |
939 | ||
739f79fc JW |
940 | static inline struct mem_cgroup *lock_page_memcg(struct page *page) |
941 | { | |
942 | return NULL; | |
943 | } | |
944 | ||
945 | static inline void __unlock_page_memcg(struct mem_cgroup *memcg) | |
89c06bd5 KH |
946 | { |
947 | } | |
948 | ||
62cccb8c | 949 | static inline void unlock_page_memcg(struct page *page) |
89c06bd5 KH |
950 | { |
951 | } | |
952 | ||
b23afb93 TH |
953 | static inline void mem_cgroup_handle_over_high(void) |
954 | { | |
955 | } | |
956 | ||
49426420 | 957 | static inline void mem_cgroup_oom_enable(void) |
519e5247 JW |
958 | { |
959 | } | |
960 | ||
49426420 | 961 | static inline void mem_cgroup_oom_disable(void) |
519e5247 JW |
962 | { |
963 | } | |
964 | ||
3812c8c8 JW |
965 | static inline bool task_in_memcg_oom(struct task_struct *p) |
966 | { | |
967 | return false; | |
968 | } | |
969 | ||
49426420 | 970 | static inline bool mem_cgroup_oom_synchronize(bool wait) |
3812c8c8 JW |
971 | { |
972 | return false; | |
973 | } | |
974 | ||
ccda7f43 | 975 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
04fecbf5 | 976 | int idx) |
2a2e4885 JW |
977 | { |
978 | return 0; | |
979 | } | |
980 | ||
00f3ca2c | 981 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 982 | int idx, |
00f3ca2c | 983 | int nr) |
2a2e4885 JW |
984 | { |
985 | } | |
986 | ||
00f3ca2c | 987 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 988 | int idx, |
00f3ca2c | 989 | int nr) |
2a2e4885 JW |
990 | { |
991 | } | |
992 | ||
00f3ca2c | 993 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 994 | int idx, |
00f3ca2c | 995 | int nr) |
2a2e4885 JW |
996 | { |
997 | } | |
998 | ||
ccda7f43 | 999 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 1000 | int idx, |
ccda7f43 | 1001 | int nr) |
553af430 JW |
1002 | { |
1003 | } | |
1004 | ||
00f3ca2c JW |
1005 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
1006 | enum node_stat_item idx) | |
2a7106f2 | 1007 | { |
00f3ca2c | 1008 | return node_page_state(lruvec_pgdat(lruvec), idx); |
2a7106f2 GT |
1009 | } |
1010 | ||
00f3ca2c JW |
1011 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
1012 | enum node_stat_item idx, int val) | |
d69b042f | 1013 | { |
00f3ca2c JW |
1014 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
1015 | } | |
1016 | ||
1017 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
1018 | enum node_stat_item idx, int val) | |
1019 | { | |
1020 | mod_node_page_state(lruvec_pgdat(lruvec), idx, val); | |
1021 | } | |
1022 | ||
1023 | static inline void __mod_lruvec_page_state(struct page *page, | |
1024 | enum node_stat_item idx, int val) | |
1025 | { | |
1026 | __mod_node_page_state(page_pgdat(page), idx, val); | |
1027 | } | |
1028 | ||
1029 | static inline void mod_lruvec_page_state(struct page *page, | |
1030 | enum node_stat_item idx, int val) | |
1031 | { | |
1032 | mod_node_page_state(page_pgdat(page), idx, val); | |
d69b042f BS |
1033 | } |
1034 | ||
4e416953 | 1035 | static inline |
ef8f2327 | 1036 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
1037 | gfp_t gfp_mask, |
1038 | unsigned long *total_scanned) | |
4e416953 | 1039 | { |
0608f43d | 1040 | return 0; |
4e416953 BS |
1041 | } |
1042 | ||
e94c8a9c | 1043 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
ca3e0214 KH |
1044 | { |
1045 | } | |
1046 | ||
2262185c RG |
1047 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
1048 | enum vm_event_item idx, | |
1049 | unsigned long count) | |
1050 | { | |
1051 | } | |
1052 | ||
1053 | static inline void count_memcg_page_event(struct page *page, | |
04fecbf5 | 1054 | int idx) |
2262185c RG |
1055 | { |
1056 | } | |
1057 | ||
456f998e | 1058 | static inline |
2262185c | 1059 | void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) |
456f998e YH |
1060 | { |
1061 | } | |
c255a458 | 1062 | #endif /* CONFIG_MEMCG */ |
78fb7466 | 1063 | |
04fecbf5 | 1064 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1065 | static inline void __inc_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1066 | int idx) |
00f3ca2c JW |
1067 | { |
1068 | __mod_memcg_state(memcg, idx, 1); | |
1069 | } | |
1070 | ||
04fecbf5 | 1071 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1072 | static inline void __dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1073 | int idx) |
00f3ca2c JW |
1074 | { |
1075 | __mod_memcg_state(memcg, idx, -1); | |
1076 | } | |
1077 | ||
04fecbf5 | 1078 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1079 | static inline void __inc_memcg_page_state(struct page *page, |
04fecbf5 | 1080 | int idx) |
00f3ca2c JW |
1081 | { |
1082 | __mod_memcg_page_state(page, idx, 1); | |
1083 | } | |
1084 | ||
04fecbf5 | 1085 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1086 | static inline void __dec_memcg_page_state(struct page *page, |
04fecbf5 | 1087 | int idx) |
00f3ca2c JW |
1088 | { |
1089 | __mod_memcg_page_state(page, idx, -1); | |
1090 | } | |
1091 | ||
1092 | static inline void __inc_lruvec_state(struct lruvec *lruvec, | |
1093 | enum node_stat_item idx) | |
1094 | { | |
1095 | __mod_lruvec_state(lruvec, idx, 1); | |
1096 | } | |
1097 | ||
1098 | static inline void __dec_lruvec_state(struct lruvec *lruvec, | |
1099 | enum node_stat_item idx) | |
1100 | { | |
1101 | __mod_lruvec_state(lruvec, idx, -1); | |
1102 | } | |
1103 | ||
1104 | static inline void __inc_lruvec_page_state(struct page *page, | |
1105 | enum node_stat_item idx) | |
1106 | { | |
1107 | __mod_lruvec_page_state(page, idx, 1); | |
1108 | } | |
1109 | ||
1110 | static inline void __dec_lruvec_page_state(struct page *page, | |
1111 | enum node_stat_item idx) | |
1112 | { | |
1113 | __mod_lruvec_page_state(page, idx, -1); | |
1114 | } | |
1115 | ||
04fecbf5 | 1116 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1117 | static inline void inc_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1118 | int idx) |
00f3ca2c JW |
1119 | { |
1120 | mod_memcg_state(memcg, idx, 1); | |
1121 | } | |
1122 | ||
04fecbf5 | 1123 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1124 | static inline void dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1125 | int idx) |
00f3ca2c JW |
1126 | { |
1127 | mod_memcg_state(memcg, idx, -1); | |
1128 | } | |
1129 | ||
04fecbf5 | 1130 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1131 | static inline void inc_memcg_page_state(struct page *page, |
04fecbf5 | 1132 | int idx) |
00f3ca2c JW |
1133 | { |
1134 | mod_memcg_page_state(page, idx, 1); | |
1135 | } | |
1136 | ||
04fecbf5 | 1137 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1138 | static inline void dec_memcg_page_state(struct page *page, |
04fecbf5 | 1139 | int idx) |
00f3ca2c JW |
1140 | { |
1141 | mod_memcg_page_state(page, idx, -1); | |
1142 | } | |
1143 | ||
1144 | static inline void inc_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 dec_lruvec_state(struct lruvec *lruvec, | |
1151 | enum node_stat_item idx) | |
1152 | { | |
1153 | mod_lruvec_state(lruvec, idx, -1); | |
1154 | } | |
1155 | ||
1156 | static inline void inc_lruvec_page_state(struct page *page, | |
1157 | enum node_stat_item idx) | |
1158 | { | |
1159 | mod_lruvec_page_state(page, idx, 1); | |
1160 | } | |
1161 | ||
1162 | static inline void dec_lruvec_page_state(struct page *page, | |
1163 | enum node_stat_item idx) | |
1164 | { | |
1165 | mod_lruvec_page_state(page, idx, -1); | |
1166 | } | |
1167 | ||
52ebea74 | 1168 | #ifdef CONFIG_CGROUP_WRITEBACK |
841710aa | 1169 | |
841710aa | 1170 | struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); |
c5edf9cd TH |
1171 | void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, |
1172 | unsigned long *pheadroom, unsigned long *pdirty, | |
1173 | unsigned long *pwriteback); | |
841710aa TH |
1174 | |
1175 | #else /* CONFIG_CGROUP_WRITEBACK */ | |
1176 | ||
1177 | static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) | |
1178 | { | |
1179 | return NULL; | |
1180 | } | |
1181 | ||
c2aa723a | 1182 | static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, |
c5edf9cd TH |
1183 | unsigned long *pfilepages, |
1184 | unsigned long *pheadroom, | |
c2aa723a TH |
1185 | unsigned long *pdirty, |
1186 | unsigned long *pwriteback) | |
1187 | { | |
1188 | } | |
1189 | ||
841710aa | 1190 | #endif /* CONFIG_CGROUP_WRITEBACK */ |
52ebea74 | 1191 | |
e1aab161 | 1192 | struct sock; |
baac50bb JW |
1193 | bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
1194 | void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); | |
d886f4e4 | 1195 | #ifdef CONFIG_MEMCG |
ef12947c JW |
1196 | extern struct static_key_false memcg_sockets_enabled_key; |
1197 | #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key) | |
2d758073 JW |
1198 | void mem_cgroup_sk_alloc(struct sock *sk); |
1199 | void mem_cgroup_sk_free(struct sock *sk); | |
baac50bb | 1200 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c | 1201 | { |
0db15298 | 1202 | if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure) |
8e8ae645 | 1203 | return true; |
8e8ae645 JW |
1204 | do { |
1205 | if (time_before(jiffies, memcg->socket_pressure)) | |
1206 | return true; | |
1207 | } while ((memcg = parent_mem_cgroup(memcg))); | |
1208 | return false; | |
e805605c JW |
1209 | } |
1210 | #else | |
80e95fe0 | 1211 | #define mem_cgroup_sockets_enabled 0 |
2d758073 JW |
1212 | static inline void mem_cgroup_sk_alloc(struct sock *sk) { }; |
1213 | static inline void mem_cgroup_sk_free(struct sock *sk) { }; | |
baac50bb | 1214 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c JW |
1215 | { |
1216 | return false; | |
1217 | } | |
1218 | #endif | |
7ae1e1d0 | 1219 | |
45264778 VD |
1220 | struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); |
1221 | void memcg_kmem_put_cache(struct kmem_cache *cachep); | |
1222 | int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, | |
1223 | struct mem_cgroup *memcg); | |
1224 | int memcg_kmem_charge(struct page *page, gfp_t gfp, int order); | |
1225 | void memcg_kmem_uncharge(struct page *page, int order); | |
1226 | ||
127424c8 | 1227 | #if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB) |
ef12947c | 1228 | extern struct static_key_false memcg_kmem_enabled_key; |
17cc4dfe | 1229 | extern struct workqueue_struct *memcg_kmem_cache_wq; |
749c5415 | 1230 | |
dbcf73e2 | 1231 | extern int memcg_nr_cache_ids; |
64219994 MH |
1232 | void memcg_get_cache_ids(void); |
1233 | void memcg_put_cache_ids(void); | |
ebe945c2 GC |
1234 | |
1235 | /* | |
1236 | * Helper macro to loop through all memcg-specific caches. Callers must still | |
1237 | * check if the cache is valid (it is either valid or NULL). | |
1238 | * the slab_mutex must be held when looping through those caches | |
1239 | */ | |
749c5415 | 1240 | #define for_each_memcg_cache_index(_idx) \ |
dbcf73e2 | 1241 | for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) |
749c5415 | 1242 | |
7ae1e1d0 GC |
1243 | static inline bool memcg_kmem_enabled(void) |
1244 | { | |
ef12947c | 1245 | return static_branch_unlikely(&memcg_kmem_enabled_key); |
7ae1e1d0 GC |
1246 | } |
1247 | ||
33398cf2 | 1248 | /* |
9f706d68 | 1249 | * helper for accessing a memcg's index. It will be used as an index in the |
33398cf2 MH |
1250 | * child cache array in kmem_cache, and also to derive its name. This function |
1251 | * will return -1 when this is not a kmem-limited memcg. | |
1252 | */ | |
1253 | static inline int memcg_cache_id(struct mem_cgroup *memcg) | |
1254 | { | |
1255 | return memcg ? memcg->kmemcg_id : -1; | |
1256 | } | |
5722d094 | 1257 | |
7ae1e1d0 | 1258 | #else |
749c5415 GC |
1259 | #define for_each_memcg_cache_index(_idx) \ |
1260 | for (; NULL; ) | |
1261 | ||
b9ce5ef4 GC |
1262 | static inline bool memcg_kmem_enabled(void) |
1263 | { | |
1264 | return false; | |
1265 | } | |
1266 | ||
2633d7a0 GC |
1267 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
1268 | { | |
1269 | return -1; | |
1270 | } | |
1271 | ||
05257a1a VD |
1272 | static inline void memcg_get_cache_ids(void) |
1273 | { | |
1274 | } | |
1275 | ||
1276 | static inline void memcg_put_cache_ids(void) | |
1277 | { | |
1278 | } | |
1279 | ||
127424c8 JW |
1280 | #endif /* CONFIG_MEMCG && !CONFIG_SLOB */ |
1281 | ||
8cdea7c0 | 1282 | #endif /* _LINUX_MEMCONTROL_H */ |