]>
Commit | Line | Data |
---|---|---|
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 | |
84c07d11 | 274 | #ifdef CONFIG_MEMCG_KMEM |
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 | ||
f745c6f5 SB |
378 | struct mem_cgroup *get_mem_cgroup_from_page(struct page *page); |
379 | ||
33398cf2 MH |
380 | static inline |
381 | struct mem_cgroup *mem_cgroup_from_css(struct cgroup_subsys_state *css){ | |
382 | return css ? container_of(css, struct mem_cgroup, css) : NULL; | |
383 | } | |
384 | ||
dc0b5864 RG |
385 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
386 | { | |
d46eb14b SB |
387 | if (memcg) |
388 | css_put(&memcg->css); | |
dc0b5864 RG |
389 | } |
390 | ||
8e8ae645 JW |
391 | #define mem_cgroup_from_counter(counter, member) \ |
392 | container_of(counter, struct mem_cgroup, member) | |
393 | ||
33398cf2 MH |
394 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
395 | struct mem_cgroup *, | |
396 | struct mem_cgroup_reclaim_cookie *); | |
397 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); | |
7c5f64f8 VD |
398 | int mem_cgroup_scan_tasks(struct mem_cgroup *, |
399 | int (*)(struct task_struct *, void *), void *); | |
33398cf2 | 400 | |
23047a96 JW |
401 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
402 | { | |
403 | if (mem_cgroup_disabled()) | |
404 | return 0; | |
405 | ||
73f576c0 | 406 | return memcg->id.id; |
23047a96 | 407 | } |
73f576c0 | 408 | struct mem_cgroup *mem_cgroup_from_id(unsigned short id); |
23047a96 | 409 | |
2262185c RG |
410 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
411 | { | |
412 | struct mem_cgroup_per_node *mz; | |
413 | ||
414 | if (mem_cgroup_disabled()) | |
415 | return NULL; | |
416 | ||
417 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
418 | return mz->memcg; | |
419 | } | |
420 | ||
8e8ae645 JW |
421 | /** |
422 | * parent_mem_cgroup - find the accounting parent of a memcg | |
423 | * @memcg: memcg whose parent to find | |
424 | * | |
425 | * Returns the parent memcg, or NULL if this is the root or the memory | |
426 | * controller is in legacy no-hierarchy mode. | |
427 | */ | |
428 | static inline struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg) | |
429 | { | |
430 | if (!memcg->memory.parent) | |
431 | return NULL; | |
432 | return mem_cgroup_from_counter(memcg->memory.parent, memory); | |
433 | } | |
434 | ||
33398cf2 MH |
435 | static inline bool mem_cgroup_is_descendant(struct mem_cgroup *memcg, |
436 | struct mem_cgroup *root) | |
437 | { | |
438 | if (root == memcg) | |
439 | return true; | |
440 | if (!root->use_hierarchy) | |
441 | return false; | |
442 | return cgroup_is_descendant(memcg->css.cgroup, root->css.cgroup); | |
443 | } | |
e1aab161 | 444 | |
2314b42d JW |
445 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
446 | struct mem_cgroup *memcg) | |
2e4d4091 | 447 | { |
587af308 | 448 | struct mem_cgroup *task_memcg; |
413918bb | 449 | bool match = false; |
c3ac9a8a | 450 | |
2e4d4091 | 451 | rcu_read_lock(); |
587af308 | 452 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
413918bb | 453 | if (task_memcg) |
2314b42d | 454 | match = mem_cgroup_is_descendant(task_memcg, memcg); |
2e4d4091 | 455 | rcu_read_unlock(); |
c3ac9a8a | 456 | return match; |
2e4d4091 | 457 | } |
8a9f3ccd | 458 | |
64219994 | 459 | struct cgroup_subsys_state *mem_cgroup_css_from_page(struct page *page); |
2fc04524 | 460 | ino_t page_cgroup_ino(struct page *page); |
d324236b | 461 | |
eb01aaab VD |
462 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
463 | { | |
464 | if (mem_cgroup_disabled()) | |
465 | return true; | |
466 | return !!(memcg->css.flags & CSS_ONLINE); | |
467 | } | |
468 | ||
58ae83db KH |
469 | /* |
470 | * For memory reclaim. | |
471 | */ | |
889976db | 472 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
33398cf2 MH |
473 | |
474 | void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, | |
b4536f0c | 475 | int zid, int nr_pages); |
33398cf2 | 476 | |
0a6b76dd VD |
477 | unsigned long mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, |
478 | int nid, unsigned int lru_mask); | |
479 | ||
33398cf2 MH |
480 | static inline |
481 | unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) | |
482 | { | |
ef8f2327 | 483 | struct mem_cgroup_per_node *mz; |
b4536f0c MH |
484 | unsigned long nr_pages = 0; |
485 | int zid; | |
33398cf2 | 486 | |
ef8f2327 | 487 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
b4536f0c MH |
488 | for (zid = 0; zid < MAX_NR_ZONES; zid++) |
489 | nr_pages += mz->lru_zone_size[zid][lru]; | |
490 | return nr_pages; | |
491 | } | |
492 | ||
493 | static inline | |
494 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
495 | enum lru_list lru, int zone_idx) | |
496 | { | |
497 | struct mem_cgroup_per_node *mz; | |
498 | ||
499 | mz = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
500 | return mz->lru_zone_size[zone_idx][lru]; | |
33398cf2 MH |
501 | } |
502 | ||
b23afb93 TH |
503 | void mem_cgroup_handle_over_high(void); |
504 | ||
bbec2e15 | 505 | unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg); |
7c5f64f8 | 506 | |
64219994 MH |
507 | void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, |
508 | struct task_struct *p); | |
58ae83db | 509 | |
29ef680a | 510 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 | 511 | { |
29ef680a MH |
512 | WARN_ON(current->in_user_fault); |
513 | current->in_user_fault = 1; | |
519e5247 JW |
514 | } |
515 | ||
29ef680a | 516 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 | 517 | { |
29ef680a MH |
518 | WARN_ON(!current->in_user_fault); |
519 | current->in_user_fault = 0; | |
519e5247 JW |
520 | } |
521 | ||
3812c8c8 JW |
522 | static inline bool task_in_memcg_oom(struct task_struct *p) |
523 | { | |
626ebc41 | 524 | return p->memcg_in_oom; |
3812c8c8 JW |
525 | } |
526 | ||
49426420 | 527 | bool mem_cgroup_oom_synchronize(bool wait); |
3812c8c8 | 528 | |
c255a458 | 529 | #ifdef CONFIG_MEMCG_SWAP |
c077719b KH |
530 | extern int do_swap_account; |
531 | #endif | |
f8d66542 | 532 | |
739f79fc JW |
533 | struct mem_cgroup *lock_page_memcg(struct page *page); |
534 | void __unlock_page_memcg(struct mem_cgroup *memcg); | |
62cccb8c | 535 | void unlock_page_memcg(struct page *page); |
d7365e78 | 536 | |
04fecbf5 | 537 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
ccda7f43 | 538 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
04fecbf5 | 539 | int idx) |
2a2e4885 | 540 | { |
a983b5eb JW |
541 | long x = atomic_long_read(&memcg->stat[idx]); |
542 | #ifdef CONFIG_SMP | |
543 | if (x < 0) | |
544 | x = 0; | |
545 | #endif | |
546 | return x; | |
2a2e4885 JW |
547 | } |
548 | ||
04fecbf5 | 549 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 550 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 551 | int idx, int val) |
2a2e4885 | 552 | { |
a983b5eb JW |
553 | long x; |
554 | ||
555 | if (mem_cgroup_disabled()) | |
556 | return; | |
557 | ||
558 | x = val + __this_cpu_read(memcg->stat_cpu->count[idx]); | |
559 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { | |
560 | atomic_long_add(x, &memcg->stat[idx]); | |
561 | x = 0; | |
562 | } | |
563 | __this_cpu_write(memcg->stat_cpu->count[idx], x); | |
2a2e4885 JW |
564 | } |
565 | ||
04fecbf5 | 566 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 567 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 568 | int idx, int val) |
2a2e4885 | 569 | { |
c3cc3911 JW |
570 | unsigned long flags; |
571 | ||
572 | local_irq_save(flags); | |
a983b5eb | 573 | __mod_memcg_state(memcg, idx, val); |
c3cc3911 | 574 | local_irq_restore(flags); |
2a2e4885 JW |
575 | } |
576 | ||
33398cf2 | 577 | /** |
ccda7f43 | 578 | * mod_memcg_page_state - update page state statistics |
62cccb8c | 579 | * @page: the page |
33398cf2 MH |
580 | * @idx: page state item to account |
581 | * @val: number of pages (positive or negative) | |
582 | * | |
fdf1cdb9 JW |
583 | * The @page must be locked or the caller must use lock_page_memcg() |
584 | * to prevent double accounting when the page is concurrently being | |
585 | * moved to another memcg: | |
81f8c3a4 | 586 | * |
fdf1cdb9 | 587 | * lock_page(page) or lock_page_memcg(page) |
81f8c3a4 | 588 | * if (TestClearPageState(page)) |
ccda7f43 | 589 | * mod_memcg_page_state(page, state, -1); |
fdf1cdb9 | 590 | * unlock_page(page) or unlock_page_memcg(page) |
2a2e4885 JW |
591 | * |
592 | * Kernel pages are an exception to this, since they'll never move. | |
33398cf2 | 593 | */ |
00f3ca2c | 594 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 595 | int idx, int val) |
00f3ca2c JW |
596 | { |
597 | if (page->mem_cgroup) | |
598 | __mod_memcg_state(page->mem_cgroup, idx, val); | |
599 | } | |
600 | ||
ccda7f43 | 601 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 602 | int idx, int val) |
33398cf2 | 603 | { |
62cccb8c | 604 | if (page->mem_cgroup) |
ccda7f43 | 605 | mod_memcg_state(page->mem_cgroup, idx, val); |
33398cf2 MH |
606 | } |
607 | ||
00f3ca2c JW |
608 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
609 | enum node_stat_item idx) | |
2a7106f2 | 610 | { |
00f3ca2c | 611 | struct mem_cgroup_per_node *pn; |
a983b5eb | 612 | long x; |
00f3ca2c JW |
613 | |
614 | if (mem_cgroup_disabled()) | |
615 | return node_page_state(lruvec_pgdat(lruvec), idx); | |
616 | ||
617 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); | |
a983b5eb JW |
618 | x = atomic_long_read(&pn->lruvec_stat[idx]); |
619 | #ifdef CONFIG_SMP | |
620 | if (x < 0) | |
621 | x = 0; | |
622 | #endif | |
623 | return x; | |
2a7106f2 GT |
624 | } |
625 | ||
00f3ca2c JW |
626 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
627 | enum node_stat_item idx, int val) | |
2a7106f2 | 628 | { |
00f3ca2c | 629 | struct mem_cgroup_per_node *pn; |
a983b5eb | 630 | long x; |
00f3ca2c | 631 | |
28454265 | 632 | /* Update node */ |
00f3ca2c | 633 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
28454265 | 634 | |
00f3ca2c JW |
635 | if (mem_cgroup_disabled()) |
636 | return; | |
28454265 | 637 | |
00f3ca2c | 638 | pn = container_of(lruvec, struct mem_cgroup_per_node, lruvec); |
28454265 JW |
639 | |
640 | /* Update memcg */ | |
00f3ca2c | 641 | __mod_memcg_state(pn->memcg, idx, val); |
28454265 JW |
642 | |
643 | /* Update lruvec */ | |
a983b5eb JW |
644 | x = val + __this_cpu_read(pn->lruvec_stat_cpu->count[idx]); |
645 | if (unlikely(abs(x) > MEMCG_CHARGE_BATCH)) { | |
646 | atomic_long_add(x, &pn->lruvec_stat[idx]); | |
647 | x = 0; | |
648 | } | |
649 | __this_cpu_write(pn->lruvec_stat_cpu->count[idx], x); | |
00f3ca2c JW |
650 | } |
651 | ||
652 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
653 | enum node_stat_item idx, int val) | |
654 | { | |
c3cc3911 JW |
655 | unsigned long flags; |
656 | ||
657 | local_irq_save(flags); | |
28454265 | 658 | __mod_lruvec_state(lruvec, idx, val); |
c3cc3911 | 659 | local_irq_restore(flags); |
00f3ca2c JW |
660 | } |
661 | ||
662 | static inline void __mod_lruvec_page_state(struct page *page, | |
663 | enum node_stat_item idx, int val) | |
664 | { | |
28454265 JW |
665 | pg_data_t *pgdat = page_pgdat(page); |
666 | struct lruvec *lruvec; | |
00f3ca2c | 667 | |
28454265 JW |
668 | /* Untracked pages have no memcg, no lruvec. Update only the node */ |
669 | if (!page->mem_cgroup) { | |
670 | __mod_node_page_state(pgdat, idx, val); | |
00f3ca2c | 671 | return; |
28454265 JW |
672 | } |
673 | ||
674 | lruvec = mem_cgroup_lruvec(pgdat, page->mem_cgroup); | |
675 | __mod_lruvec_state(lruvec, idx, val); | |
00f3ca2c JW |
676 | } |
677 | ||
678 | static inline void mod_lruvec_page_state(struct page *page, | |
679 | enum node_stat_item idx, int val) | |
680 | { | |
c3cc3911 JW |
681 | unsigned long flags; |
682 | ||
683 | local_irq_save(flags); | |
28454265 | 684 | __mod_lruvec_page_state(page, idx, val); |
c3cc3911 | 685 | local_irq_restore(flags); |
2a7106f2 GT |
686 | } |
687 | ||
ef8f2327 | 688 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
689 | gfp_t gfp_mask, |
690 | unsigned long *total_scanned); | |
a63d83f4 | 691 | |
c9019e9b | 692 | static inline void __count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
693 | enum vm_event_item idx, |
694 | unsigned long count) | |
c9019e9b | 695 | { |
a983b5eb JW |
696 | unsigned long x; |
697 | ||
698 | if (mem_cgroup_disabled()) | |
699 | return; | |
700 | ||
701 | x = count + __this_cpu_read(memcg->stat_cpu->events[idx]); | |
702 | if (unlikely(x > MEMCG_CHARGE_BATCH)) { | |
703 | atomic_long_add(x, &memcg->events[idx]); | |
704 | x = 0; | |
705 | } | |
706 | __this_cpu_write(memcg->stat_cpu->events[idx], x); | |
c9019e9b JW |
707 | } |
708 | ||
2262185c | 709 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
e27be240 JW |
710 | enum vm_event_item idx, |
711 | unsigned long count) | |
2262185c | 712 | { |
c3cc3911 JW |
713 | unsigned long flags; |
714 | ||
715 | local_irq_save(flags); | |
a983b5eb | 716 | __count_memcg_events(memcg, idx, count); |
c3cc3911 | 717 | local_irq_restore(flags); |
2262185c RG |
718 | } |
719 | ||
720 | static inline void count_memcg_page_event(struct page *page, | |
e27be240 | 721 | enum vm_event_item idx) |
2262185c RG |
722 | { |
723 | if (page->mem_cgroup) | |
724 | count_memcg_events(page->mem_cgroup, idx, 1); | |
725 | } | |
726 | ||
727 | static inline void count_memcg_event_mm(struct mm_struct *mm, | |
728 | enum vm_event_item idx) | |
68ae564b | 729 | { |
33398cf2 MH |
730 | struct mem_cgroup *memcg; |
731 | ||
68ae564b DR |
732 | if (mem_cgroup_disabled()) |
733 | return; | |
33398cf2 MH |
734 | |
735 | rcu_read_lock(); | |
736 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
fe6bdfc8 | 737 | if (likely(memcg)) |
c9019e9b | 738 | count_memcg_events(memcg, idx, 1); |
33398cf2 | 739 | rcu_read_unlock(); |
68ae564b | 740 | } |
c9019e9b | 741 | |
e27be240 JW |
742 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
743 | enum memcg_memory_event event) | |
c9019e9b | 744 | { |
e27be240 | 745 | atomic_long_inc(&memcg->memory_events[event]); |
c9019e9b JW |
746 | cgroup_file_notify(&memcg->events_file); |
747 | } | |
748 | ||
fe6bdfc8 RG |
749 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
750 | enum memcg_memory_event event) | |
751 | { | |
752 | struct mem_cgroup *memcg; | |
753 | ||
754 | if (mem_cgroup_disabled()) | |
755 | return; | |
756 | ||
757 | rcu_read_lock(); | |
758 | memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); | |
759 | if (likely(memcg)) | |
760 | memcg_memory_event(memcg, event); | |
761 | rcu_read_unlock(); | |
762 | } | |
763 | ||
ca3e0214 | 764 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e94c8a9c | 765 | void mem_cgroup_split_huge_fixup(struct page *head); |
ca3e0214 KH |
766 | #endif |
767 | ||
c255a458 | 768 | #else /* CONFIG_MEMCG */ |
23047a96 JW |
769 | |
770 | #define MEM_CGROUP_ID_SHIFT 0 | |
771 | #define MEM_CGROUP_ID_MAX 0 | |
772 | ||
7a81b88c KH |
773 | struct mem_cgroup; |
774 | ||
23047a96 JW |
775 | static inline bool mem_cgroup_disabled(void) |
776 | { | |
777 | return true; | |
778 | } | |
779 | ||
e27be240 JW |
780 | static inline void memcg_memory_event(struct mem_cgroup *memcg, |
781 | enum memcg_memory_event event) | |
241994ed JW |
782 | { |
783 | } | |
784 | ||
fe6bdfc8 RG |
785 | static inline void memcg_memory_event_mm(struct mm_struct *mm, |
786 | enum memcg_memory_event event) | |
787 | { | |
788 | } | |
789 | ||
bf8d5d52 RG |
790 | static inline enum mem_cgroup_protection mem_cgroup_protected( |
791 | struct mem_cgroup *root, struct mem_cgroup *memcg) | |
241994ed | 792 | { |
bf8d5d52 | 793 | return MEMCG_PROT_NONE; |
241994ed JW |
794 | } |
795 | ||
00501b53 JW |
796 | static inline int mem_cgroup_try_charge(struct page *page, struct mm_struct *mm, |
797 | gfp_t gfp_mask, | |
f627c2f5 KS |
798 | struct mem_cgroup **memcgp, |
799 | bool compound) | |
7a81b88c | 800 | { |
00501b53 | 801 | *memcgp = NULL; |
7a81b88c KH |
802 | return 0; |
803 | } | |
804 | ||
2cf85583 TH |
805 | static inline int mem_cgroup_try_charge_delay(struct page *page, |
806 | struct mm_struct *mm, | |
807 | gfp_t gfp_mask, | |
808 | struct mem_cgroup **memcgp, | |
809 | bool compound) | |
810 | { | |
811 | *memcgp = NULL; | |
812 | return 0; | |
813 | } | |
814 | ||
00501b53 JW |
815 | static inline void mem_cgroup_commit_charge(struct page *page, |
816 | struct mem_cgroup *memcg, | |
f627c2f5 | 817 | bool lrucare, bool compound) |
7a81b88c KH |
818 | { |
819 | } | |
820 | ||
00501b53 | 821 | static inline void mem_cgroup_cancel_charge(struct page *page, |
f627c2f5 KS |
822 | struct mem_cgroup *memcg, |
823 | bool compound) | |
7a81b88c KH |
824 | { |
825 | } | |
826 | ||
0a31bc97 | 827 | static inline void mem_cgroup_uncharge(struct page *page) |
569b846d KH |
828 | { |
829 | } | |
830 | ||
747db954 | 831 | static inline void mem_cgroup_uncharge_list(struct list_head *page_list) |
8a9f3ccd BS |
832 | { |
833 | } | |
834 | ||
6a93ca8f | 835 | static inline void mem_cgroup_migrate(struct page *old, struct page *new) |
69029cd5 KH |
836 | { |
837 | } | |
838 | ||
a9dd0a83 | 839 | static inline struct lruvec *mem_cgroup_lruvec(struct pglist_data *pgdat, |
ef8f2327 | 840 | struct mem_cgroup *memcg) |
08e552c6 | 841 | { |
a9dd0a83 | 842 | return node_lruvec(pgdat); |
08e552c6 KH |
843 | } |
844 | ||
fa9add64 | 845 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
599d0c95 | 846 | struct pglist_data *pgdat) |
66e1707b | 847 | { |
599d0c95 | 848 | return &pgdat->lruvec; |
66e1707b BS |
849 | } |
850 | ||
587af308 | 851 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
c0ff4b85 | 852 | struct mem_cgroup *memcg) |
bed7161a | 853 | { |
587af308 | 854 | return true; |
bed7161a BS |
855 | } |
856 | ||
ffbdccf5 DR |
857 | static inline bool task_in_mem_cgroup(struct task_struct *task, |
858 | const struct mem_cgroup *memcg) | |
4c4a2214 | 859 | { |
ffbdccf5 | 860 | return true; |
4c4a2214 DR |
861 | } |
862 | ||
d46eb14b SB |
863 | static inline struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) |
864 | { | |
865 | return NULL; | |
866 | } | |
867 | ||
f745c6f5 SB |
868 | static inline struct mem_cgroup *get_mem_cgroup_from_page(struct page *page) |
869 | { | |
870 | return NULL; | |
871 | } | |
872 | ||
dc0b5864 RG |
873 | static inline void mem_cgroup_put(struct mem_cgroup *memcg) |
874 | { | |
875 | } | |
876 | ||
5660048c JW |
877 | static inline struct mem_cgroup * |
878 | mem_cgroup_iter(struct mem_cgroup *root, | |
879 | struct mem_cgroup *prev, | |
880 | struct mem_cgroup_reclaim_cookie *reclaim) | |
881 | { | |
882 | return NULL; | |
883 | } | |
884 | ||
885 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, | |
886 | struct mem_cgroup *prev) | |
887 | { | |
888 | } | |
889 | ||
7c5f64f8 VD |
890 | static inline int mem_cgroup_scan_tasks(struct mem_cgroup *memcg, |
891 | int (*fn)(struct task_struct *, void *), void *arg) | |
892 | { | |
893 | return 0; | |
894 | } | |
895 | ||
23047a96 | 896 | static inline unsigned short mem_cgroup_id(struct mem_cgroup *memcg) |
f8d66542 | 897 | { |
23047a96 JW |
898 | return 0; |
899 | } | |
900 | ||
901 | static inline struct mem_cgroup *mem_cgroup_from_id(unsigned short id) | |
902 | { | |
903 | WARN_ON_ONCE(id); | |
904 | /* XXX: This should always return root_mem_cgroup */ | |
905 | return NULL; | |
f8d66542 | 906 | } |
a636b327 | 907 | |
2262185c RG |
908 | static inline struct mem_cgroup *lruvec_memcg(struct lruvec *lruvec) |
909 | { | |
910 | return NULL; | |
911 | } | |
912 | ||
eb01aaab | 913 | static inline bool mem_cgroup_online(struct mem_cgroup *memcg) |
14797e23 | 914 | { |
13308ca9 | 915 | return true; |
14797e23 KM |
916 | } |
917 | ||
a3d8e054 | 918 | static inline unsigned long |
4d7dcca2 | 919 | mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) |
a3d8e054 KM |
920 | { |
921 | return 0; | |
922 | } | |
b4536f0c MH |
923 | static inline |
924 | unsigned long mem_cgroup_get_zone_lru_size(struct lruvec *lruvec, | |
925 | enum lru_list lru, int zone_idx) | |
926 | { | |
927 | return 0; | |
928 | } | |
a3d8e054 | 929 | |
0a6b76dd VD |
930 | static inline unsigned long |
931 | mem_cgroup_node_nr_lru_pages(struct mem_cgroup *memcg, | |
932 | int nid, unsigned int lru_mask) | |
933 | { | |
934 | return 0; | |
935 | } | |
936 | ||
bbec2e15 | 937 | static inline unsigned long mem_cgroup_get_max(struct mem_cgroup *memcg) |
7c5f64f8 VD |
938 | { |
939 | return 0; | |
940 | } | |
941 | ||
e222432b BS |
942 | static inline void |
943 | mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) | |
944 | { | |
945 | } | |
946 | ||
739f79fc JW |
947 | static inline struct mem_cgroup *lock_page_memcg(struct page *page) |
948 | { | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | static inline void __unlock_page_memcg(struct mem_cgroup *memcg) | |
89c06bd5 KH |
953 | { |
954 | } | |
955 | ||
62cccb8c | 956 | static inline void unlock_page_memcg(struct page *page) |
89c06bd5 KH |
957 | { |
958 | } | |
959 | ||
b23afb93 TH |
960 | static inline void mem_cgroup_handle_over_high(void) |
961 | { | |
962 | } | |
963 | ||
29ef680a | 964 | static inline void mem_cgroup_enter_user_fault(void) |
519e5247 JW |
965 | { |
966 | } | |
967 | ||
29ef680a | 968 | static inline void mem_cgroup_exit_user_fault(void) |
519e5247 JW |
969 | { |
970 | } | |
971 | ||
3812c8c8 JW |
972 | static inline bool task_in_memcg_oom(struct task_struct *p) |
973 | { | |
974 | return false; | |
975 | } | |
976 | ||
49426420 | 977 | static inline bool mem_cgroup_oom_synchronize(bool wait) |
3812c8c8 JW |
978 | { |
979 | return false; | |
980 | } | |
981 | ||
ccda7f43 | 982 | static inline unsigned long memcg_page_state(struct mem_cgroup *memcg, |
04fecbf5 | 983 | int idx) |
2a2e4885 JW |
984 | { |
985 | return 0; | |
986 | } | |
987 | ||
00f3ca2c | 988 | static inline void __mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 989 | int idx, |
00f3ca2c | 990 | int nr) |
2a2e4885 JW |
991 | { |
992 | } | |
993 | ||
00f3ca2c | 994 | static inline void mod_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 995 | int idx, |
00f3ca2c | 996 | int nr) |
2a2e4885 JW |
997 | { |
998 | } | |
999 | ||
00f3ca2c | 1000 | static inline void __mod_memcg_page_state(struct page *page, |
04fecbf5 | 1001 | int idx, |
00f3ca2c | 1002 | int nr) |
2a2e4885 JW |
1003 | { |
1004 | } | |
1005 | ||
ccda7f43 | 1006 | static inline void mod_memcg_page_state(struct page *page, |
04fecbf5 | 1007 | int idx, |
ccda7f43 | 1008 | int nr) |
553af430 JW |
1009 | { |
1010 | } | |
1011 | ||
00f3ca2c JW |
1012 | static inline unsigned long lruvec_page_state(struct lruvec *lruvec, |
1013 | enum node_stat_item idx) | |
2a7106f2 | 1014 | { |
00f3ca2c | 1015 | return node_page_state(lruvec_pgdat(lruvec), idx); |
2a7106f2 GT |
1016 | } |
1017 | ||
00f3ca2c JW |
1018 | static inline void __mod_lruvec_state(struct lruvec *lruvec, |
1019 | enum node_stat_item idx, int val) | |
d69b042f | 1020 | { |
00f3ca2c JW |
1021 | __mod_node_page_state(lruvec_pgdat(lruvec), idx, val); |
1022 | } | |
1023 | ||
1024 | static inline void mod_lruvec_state(struct lruvec *lruvec, | |
1025 | enum node_stat_item idx, int val) | |
1026 | { | |
1027 | mod_node_page_state(lruvec_pgdat(lruvec), idx, val); | |
1028 | } | |
1029 | ||
1030 | static inline void __mod_lruvec_page_state(struct page *page, | |
1031 | enum node_stat_item idx, int val) | |
1032 | { | |
1033 | __mod_node_page_state(page_pgdat(page), idx, val); | |
1034 | } | |
1035 | ||
1036 | static inline void mod_lruvec_page_state(struct page *page, | |
1037 | enum node_stat_item idx, int val) | |
1038 | { | |
1039 | mod_node_page_state(page_pgdat(page), idx, val); | |
d69b042f BS |
1040 | } |
1041 | ||
4e416953 | 1042 | static inline |
ef8f2327 | 1043 | unsigned long mem_cgroup_soft_limit_reclaim(pg_data_t *pgdat, int order, |
0608f43d AM |
1044 | gfp_t gfp_mask, |
1045 | unsigned long *total_scanned) | |
4e416953 | 1046 | { |
0608f43d | 1047 | return 0; |
4e416953 BS |
1048 | } |
1049 | ||
e94c8a9c | 1050 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
ca3e0214 KH |
1051 | { |
1052 | } | |
1053 | ||
2262185c RG |
1054 | static inline void count_memcg_events(struct mem_cgroup *memcg, |
1055 | enum vm_event_item idx, | |
1056 | unsigned long count) | |
1057 | { | |
1058 | } | |
1059 | ||
1060 | static inline void count_memcg_page_event(struct page *page, | |
04fecbf5 | 1061 | int idx) |
2262185c RG |
1062 | { |
1063 | } | |
1064 | ||
456f998e | 1065 | static inline |
2262185c | 1066 | void count_memcg_event_mm(struct mm_struct *mm, enum vm_event_item idx) |
456f998e YH |
1067 | { |
1068 | } | |
c255a458 | 1069 | #endif /* CONFIG_MEMCG */ |
78fb7466 | 1070 | |
04fecbf5 | 1071 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1072 | static inline void __inc_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 __dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1080 | int idx) |
00f3ca2c JW |
1081 | { |
1082 | __mod_memcg_state(memcg, idx, -1); | |
1083 | } | |
1084 | ||
04fecbf5 | 1085 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1086 | static inline void __inc_memcg_page_state(struct page *page, |
04fecbf5 | 1087 | int idx) |
00f3ca2c JW |
1088 | { |
1089 | __mod_memcg_page_state(page, idx, 1); | |
1090 | } | |
1091 | ||
04fecbf5 | 1092 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1093 | static inline void __dec_memcg_page_state(struct page *page, |
04fecbf5 | 1094 | int idx) |
00f3ca2c JW |
1095 | { |
1096 | __mod_memcg_page_state(page, idx, -1); | |
1097 | } | |
1098 | ||
1099 | static inline void __inc_lruvec_state(struct lruvec *lruvec, | |
1100 | enum node_stat_item idx) | |
1101 | { | |
1102 | __mod_lruvec_state(lruvec, idx, 1); | |
1103 | } | |
1104 | ||
1105 | static inline void __dec_lruvec_state(struct lruvec *lruvec, | |
1106 | enum node_stat_item idx) | |
1107 | { | |
1108 | __mod_lruvec_state(lruvec, idx, -1); | |
1109 | } | |
1110 | ||
1111 | static inline void __inc_lruvec_page_state(struct page *page, | |
1112 | enum node_stat_item idx) | |
1113 | { | |
1114 | __mod_lruvec_page_state(page, idx, 1); | |
1115 | } | |
1116 | ||
1117 | static inline void __dec_lruvec_page_state(struct page *page, | |
1118 | enum node_stat_item idx) | |
1119 | { | |
1120 | __mod_lruvec_page_state(page, idx, -1); | |
1121 | } | |
1122 | ||
04fecbf5 | 1123 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1124 | static inline void inc_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 dec_memcg_state(struct mem_cgroup *memcg, |
04fecbf5 | 1132 | int idx) |
00f3ca2c JW |
1133 | { |
1134 | mod_memcg_state(memcg, idx, -1); | |
1135 | } | |
1136 | ||
04fecbf5 | 1137 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1138 | static inline void inc_memcg_page_state(struct page *page, |
04fecbf5 | 1139 | int idx) |
00f3ca2c JW |
1140 | { |
1141 | mod_memcg_page_state(page, idx, 1); | |
1142 | } | |
1143 | ||
04fecbf5 | 1144 | /* idx can be of type enum memcg_stat_item or node_stat_item */ |
00f3ca2c | 1145 | static inline void dec_memcg_page_state(struct page *page, |
04fecbf5 | 1146 | int idx) |
00f3ca2c JW |
1147 | { |
1148 | mod_memcg_page_state(page, idx, -1); | |
1149 | } | |
1150 | ||
1151 | static inline void inc_lruvec_state(struct lruvec *lruvec, | |
1152 | enum node_stat_item idx) | |
1153 | { | |
1154 | mod_lruvec_state(lruvec, idx, 1); | |
1155 | } | |
1156 | ||
1157 | static inline void dec_lruvec_state(struct lruvec *lruvec, | |
1158 | enum node_stat_item idx) | |
1159 | { | |
1160 | mod_lruvec_state(lruvec, idx, -1); | |
1161 | } | |
1162 | ||
1163 | static inline void inc_lruvec_page_state(struct page *page, | |
1164 | enum node_stat_item idx) | |
1165 | { | |
1166 | mod_lruvec_page_state(page, idx, 1); | |
1167 | } | |
1168 | ||
1169 | static inline void dec_lruvec_page_state(struct page *page, | |
1170 | enum node_stat_item idx) | |
1171 | { | |
1172 | mod_lruvec_page_state(page, idx, -1); | |
1173 | } | |
1174 | ||
52ebea74 | 1175 | #ifdef CONFIG_CGROUP_WRITEBACK |
841710aa | 1176 | |
841710aa | 1177 | struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb); |
c5edf9cd TH |
1178 | void mem_cgroup_wb_stats(struct bdi_writeback *wb, unsigned long *pfilepages, |
1179 | unsigned long *pheadroom, unsigned long *pdirty, | |
1180 | unsigned long *pwriteback); | |
841710aa TH |
1181 | |
1182 | #else /* CONFIG_CGROUP_WRITEBACK */ | |
1183 | ||
1184 | static inline struct wb_domain *mem_cgroup_wb_domain(struct bdi_writeback *wb) | |
1185 | { | |
1186 | return NULL; | |
1187 | } | |
1188 | ||
c2aa723a | 1189 | static inline void mem_cgroup_wb_stats(struct bdi_writeback *wb, |
c5edf9cd TH |
1190 | unsigned long *pfilepages, |
1191 | unsigned long *pheadroom, | |
c2aa723a TH |
1192 | unsigned long *pdirty, |
1193 | unsigned long *pwriteback) | |
1194 | { | |
1195 | } | |
1196 | ||
841710aa | 1197 | #endif /* CONFIG_CGROUP_WRITEBACK */ |
52ebea74 | 1198 | |
e1aab161 | 1199 | struct sock; |
baac50bb JW |
1200 | bool mem_cgroup_charge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); |
1201 | void mem_cgroup_uncharge_skmem(struct mem_cgroup *memcg, unsigned int nr_pages); | |
d886f4e4 | 1202 | #ifdef CONFIG_MEMCG |
ef12947c JW |
1203 | extern struct static_key_false memcg_sockets_enabled_key; |
1204 | #define mem_cgroup_sockets_enabled static_branch_unlikely(&memcg_sockets_enabled_key) | |
2d758073 JW |
1205 | void mem_cgroup_sk_alloc(struct sock *sk); |
1206 | void mem_cgroup_sk_free(struct sock *sk); | |
baac50bb | 1207 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c | 1208 | { |
0db15298 | 1209 | if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && memcg->tcpmem_pressure) |
8e8ae645 | 1210 | return true; |
8e8ae645 JW |
1211 | do { |
1212 | if (time_before(jiffies, memcg->socket_pressure)) | |
1213 | return true; | |
1214 | } while ((memcg = parent_mem_cgroup(memcg))); | |
1215 | return false; | |
e805605c JW |
1216 | } |
1217 | #else | |
80e95fe0 | 1218 | #define mem_cgroup_sockets_enabled 0 |
2d758073 JW |
1219 | static inline void mem_cgroup_sk_alloc(struct sock *sk) { }; |
1220 | static inline void mem_cgroup_sk_free(struct sock *sk) { }; | |
baac50bb | 1221 | static inline bool mem_cgroup_under_socket_pressure(struct mem_cgroup *memcg) |
e805605c JW |
1222 | { |
1223 | return false; | |
1224 | } | |
1225 | #endif | |
7ae1e1d0 | 1226 | |
45264778 VD |
1227 | struct kmem_cache *memcg_kmem_get_cache(struct kmem_cache *cachep); |
1228 | void memcg_kmem_put_cache(struct kmem_cache *cachep); | |
1229 | int memcg_kmem_charge_memcg(struct page *page, gfp_t gfp, int order, | |
1230 | struct mem_cgroup *memcg); | |
1231 | int memcg_kmem_charge(struct page *page, gfp_t gfp, int order); | |
1232 | void memcg_kmem_uncharge(struct page *page, int order); | |
1233 | ||
84c07d11 | 1234 | #ifdef CONFIG_MEMCG_KMEM |
ef12947c | 1235 | extern struct static_key_false memcg_kmem_enabled_key; |
17cc4dfe | 1236 | extern struct workqueue_struct *memcg_kmem_cache_wq; |
749c5415 | 1237 | |
dbcf73e2 | 1238 | extern int memcg_nr_cache_ids; |
64219994 MH |
1239 | void memcg_get_cache_ids(void); |
1240 | void memcg_put_cache_ids(void); | |
ebe945c2 GC |
1241 | |
1242 | /* | |
1243 | * Helper macro to loop through all memcg-specific caches. Callers must still | |
1244 | * check if the cache is valid (it is either valid or NULL). | |
1245 | * the slab_mutex must be held when looping through those caches | |
1246 | */ | |
749c5415 | 1247 | #define for_each_memcg_cache_index(_idx) \ |
dbcf73e2 | 1248 | for ((_idx) = 0; (_idx) < memcg_nr_cache_ids; (_idx)++) |
749c5415 | 1249 | |
7ae1e1d0 GC |
1250 | static inline bool memcg_kmem_enabled(void) |
1251 | { | |
ef12947c | 1252 | return static_branch_unlikely(&memcg_kmem_enabled_key); |
7ae1e1d0 GC |
1253 | } |
1254 | ||
33398cf2 | 1255 | /* |
9f706d68 | 1256 | * helper for accessing a memcg's index. It will be used as an index in the |
33398cf2 MH |
1257 | * child cache array in kmem_cache, and also to derive its name. This function |
1258 | * will return -1 when this is not a kmem-limited memcg. | |
1259 | */ | |
1260 | static inline int memcg_cache_id(struct mem_cgroup *memcg) | |
1261 | { | |
1262 | return memcg ? memcg->kmemcg_id : -1; | |
1263 | } | |
5722d094 | 1264 | |
7ae1e1d0 | 1265 | #else |
749c5415 GC |
1266 | #define for_each_memcg_cache_index(_idx) \ |
1267 | for (; NULL; ) | |
1268 | ||
b9ce5ef4 GC |
1269 | static inline bool memcg_kmem_enabled(void) |
1270 | { | |
1271 | return false; | |
1272 | } | |
1273 | ||
2633d7a0 GC |
1274 | static inline int memcg_cache_id(struct mem_cgroup *memcg) |
1275 | { | |
1276 | return -1; | |
1277 | } | |
1278 | ||
05257a1a VD |
1279 | static inline void memcg_get_cache_ids(void) |
1280 | { | |
1281 | } | |
1282 | ||
1283 | static inline void memcg_put_cache_ids(void) | |
1284 | { | |
1285 | } | |
1286 | ||
84c07d11 | 1287 | #endif /* CONFIG_MEMCG_KMEM */ |
127424c8 | 1288 | |
8cdea7c0 | 1289 | #endif /* _LINUX_MEMCONTROL_H */ |