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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> |
456f998e | 25 | |
78fb7466 PE |
26 | struct mem_cgroup; |
27 | struct page_cgroup; | |
8697d331 BS |
28 | struct page; |
29 | struct mm_struct; | |
78fb7466 | 30 | |
2a7106f2 GT |
31 | /* Stats that can be updated by kernel. */ |
32 | enum mem_cgroup_page_stat_item { | |
33 | MEMCG_NR_FILE_MAPPED, /* # of pages charged as file rss */ | |
34 | }; | |
35 | ||
5660048c JW |
36 | struct mem_cgroup_reclaim_cookie { |
37 | struct zone *zone; | |
38 | int priority; | |
39 | unsigned int generation; | |
40 | }; | |
41 | ||
c255a458 | 42 | #ifdef CONFIG_MEMCG |
2c26fdd7 KH |
43 | /* |
44 | * All "charge" functions with gfp_mask should use GFP_KERNEL or | |
45 | * (gfp_mask & GFP_RECLAIM_MASK). In current implementatin, memcg doesn't | |
46 | * alloc memory but reclaims memory from all available zones. So, "where I want | |
47 | * memory from" bits of gfp_mask has no meaning. So any bits of that field is | |
48 | * available but adding a rule is better. charge functions' gfp_mask should | |
49 | * be set to GFP_KERNEL or gfp_mask & GFP_RECLAIM_MASK for avoiding ambiguous | |
50 | * codes. | |
51 | * (Of course, if memcg does memory allocation in future, GFP_KERNEL is sane.) | |
52 | */ | |
78fb7466 | 53 | |
7a81b88c | 54 | extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm, |
e1a1cd59 | 55 | gfp_t gfp_mask); |
7a81b88c | 56 | /* for swap handling */ |
8c7c6e34 | 57 | extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm, |
72835c86 | 58 | struct page *page, gfp_t mask, struct mem_cgroup **memcgp); |
7a81b88c | 59 | extern void mem_cgroup_commit_charge_swapin(struct page *page, |
72835c86 JW |
60 | struct mem_cgroup *memcg); |
61 | extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg); | |
7a81b88c | 62 | |
8289546e HD |
63 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
64 | gfp_t gfp_mask); | |
925b7673 JW |
65 | |
66 | struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *); | |
fa9add64 | 67 | struct lruvec *mem_cgroup_page_lruvec(struct page *, struct zone *); |
569b846d KH |
68 | |
69 | /* For coalescing uncharge for reducing memcg' overhead*/ | |
70 | extern void mem_cgroup_uncharge_start(void); | |
71 | extern void mem_cgroup_uncharge_end(void); | |
72 | ||
3c541e14 | 73 | extern void mem_cgroup_uncharge_page(struct page *page); |
69029cd5 | 74 | extern void mem_cgroup_uncharge_cache_page(struct page *page); |
c9b0ed51 | 75 | |
c3ac9a8a JW |
76 | bool __mem_cgroup_same_or_subtree(const struct mem_cgroup *root_memcg, |
77 | struct mem_cgroup *memcg); | |
c0ff4b85 | 78 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *memcg); |
3062fc67 | 79 | |
e42d9d5d | 80 | extern struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page); |
cf475ad2 | 81 | extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
a433658c | 82 | extern struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm); |
cf475ad2 | 83 | |
e1aab161 | 84 | extern struct mem_cgroup *parent_mem_cgroup(struct mem_cgroup *memcg); |
d1a4c0b3 | 85 | extern struct mem_cgroup *mem_cgroup_from_cont(struct cgroup *cont); |
e1aab161 | 86 | |
2e4d4091 | 87 | static inline |
587af308 | 88 | bool mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *memcg) |
2e4d4091 | 89 | { |
587af308 JW |
90 | struct mem_cgroup *task_memcg; |
91 | bool match; | |
c3ac9a8a | 92 | |
2e4d4091 | 93 | rcu_read_lock(); |
587af308 JW |
94 | task_memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); |
95 | match = __mem_cgroup_same_or_subtree(memcg, task_memcg); | |
2e4d4091 | 96 | rcu_read_unlock(); |
c3ac9a8a | 97 | return match; |
2e4d4091 | 98 | } |
8a9f3ccd | 99 | |
c0ff4b85 | 100 | extern struct cgroup_subsys_state *mem_cgroup_css(struct mem_cgroup *memcg); |
d324236b | 101 | |
0030f535 JW |
102 | extern void |
103 | mem_cgroup_prepare_migration(struct page *page, struct page *newpage, | |
104 | struct mem_cgroup **memcgp); | |
c0ff4b85 | 105 | extern void mem_cgroup_end_migration(struct mem_cgroup *memcg, |
50de1dd9 | 106 | struct page *oldpage, struct page *newpage, bool migration_ok); |
ae41be37 | 107 | |
5660048c JW |
108 | struct mem_cgroup *mem_cgroup_iter(struct mem_cgroup *, |
109 | struct mem_cgroup *, | |
110 | struct mem_cgroup_reclaim_cookie *); | |
111 | void mem_cgroup_iter_break(struct mem_cgroup *, struct mem_cgroup *); | |
112 | ||
58ae83db KH |
113 | /* |
114 | * For memory reclaim. | |
115 | */ | |
c56d5c7d KK |
116 | int mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec); |
117 | int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec); | |
889976db | 118 | int mem_cgroup_select_victim_node(struct mem_cgroup *memcg); |
4d7dcca2 | 119 | unsigned long mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list); |
fa9add64 | 120 | void mem_cgroup_update_lru_size(struct lruvec *, enum lru_list, int); |
e222432b BS |
121 | extern void mem_cgroup_print_oom_info(struct mem_cgroup *memcg, |
122 | struct task_struct *p); | |
ab936cbc KH |
123 | extern void mem_cgroup_replace_page_cache(struct page *oldpage, |
124 | struct page *newpage); | |
58ae83db | 125 | |
c255a458 | 126 | #ifdef CONFIG_MEMCG_SWAP |
c077719b KH |
127 | extern int do_swap_account; |
128 | #endif | |
f8d66542 HT |
129 | |
130 | static inline bool mem_cgroup_disabled(void) | |
131 | { | |
132 | if (mem_cgroup_subsys.disabled) | |
133 | return true; | |
134 | return false; | |
135 | } | |
136 | ||
89c06bd5 KH |
137 | void __mem_cgroup_begin_update_page_stat(struct page *page, bool *locked, |
138 | unsigned long *flags); | |
139 | ||
4331f7d3 KH |
140 | extern atomic_t memcg_moving; |
141 | ||
89c06bd5 KH |
142 | static inline void mem_cgroup_begin_update_page_stat(struct page *page, |
143 | bool *locked, unsigned long *flags) | |
144 | { | |
145 | if (mem_cgroup_disabled()) | |
146 | return; | |
147 | rcu_read_lock(); | |
148 | *locked = false; | |
4331f7d3 KH |
149 | if (atomic_read(&memcg_moving)) |
150 | __mem_cgroup_begin_update_page_stat(page, locked, flags); | |
89c06bd5 KH |
151 | } |
152 | ||
153 | void __mem_cgroup_end_update_page_stat(struct page *page, | |
154 | unsigned long *flags); | |
155 | static inline void mem_cgroup_end_update_page_stat(struct page *page, | |
156 | bool *locked, unsigned long *flags) | |
157 | { | |
158 | if (mem_cgroup_disabled()) | |
159 | return; | |
160 | if (*locked) | |
161 | __mem_cgroup_end_update_page_stat(page, flags); | |
162 | rcu_read_unlock(); | |
163 | } | |
164 | ||
2a7106f2 GT |
165 | void mem_cgroup_update_page_stat(struct page *page, |
166 | enum mem_cgroup_page_stat_item idx, | |
167 | int val); | |
168 | ||
169 | static inline void mem_cgroup_inc_page_stat(struct page *page, | |
170 | enum mem_cgroup_page_stat_item idx) | |
171 | { | |
172 | mem_cgroup_update_page_stat(page, idx, 1); | |
173 | } | |
174 | ||
175 | static inline void mem_cgroup_dec_page_stat(struct page *page, | |
176 | enum mem_cgroup_page_stat_item idx) | |
177 | { | |
178 | mem_cgroup_update_page_stat(page, idx, -1); | |
179 | } | |
180 | ||
4e416953 | 181 | unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, |
0ae5e89c YH |
182 | gfp_t gfp_mask, |
183 | unsigned long *total_scanned); | |
a63d83f4 | 184 | |
68ae564b DR |
185 | void __mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx); |
186 | static inline void mem_cgroup_count_vm_event(struct mm_struct *mm, | |
187 | enum vm_event_item idx) | |
188 | { | |
189 | if (mem_cgroup_disabled()) | |
190 | return; | |
191 | __mem_cgroup_count_vm_event(mm, idx); | |
192 | } | |
ca3e0214 | 193 | #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
e94c8a9c | 194 | void mem_cgroup_split_huge_fixup(struct page *head); |
ca3e0214 KH |
195 | #endif |
196 | ||
f212ad7c DN |
197 | #ifdef CONFIG_DEBUG_VM |
198 | bool mem_cgroup_bad_page_check(struct page *page); | |
199 | void mem_cgroup_print_bad_page(struct page *page); | |
200 | #endif | |
c255a458 | 201 | #else /* CONFIG_MEMCG */ |
7a81b88c KH |
202 | struct mem_cgroup; |
203 | ||
204 | static inline int mem_cgroup_newpage_charge(struct page *page, | |
8289546e | 205 | struct mm_struct *mm, gfp_t gfp_mask) |
8a9f3ccd BS |
206 | { |
207 | return 0; | |
208 | } | |
209 | ||
8289546e HD |
210 | static inline int mem_cgroup_cache_charge(struct page *page, |
211 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 212 | { |
8289546e | 213 | return 0; |
8a9f3ccd BS |
214 | } |
215 | ||
8c7c6e34 | 216 | static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm, |
72835c86 | 217 | struct page *page, gfp_t gfp_mask, struct mem_cgroup **memcgp) |
7a81b88c KH |
218 | { |
219 | return 0; | |
220 | } | |
221 | ||
222 | static inline void mem_cgroup_commit_charge_swapin(struct page *page, | |
72835c86 | 223 | struct mem_cgroup *memcg) |
7a81b88c KH |
224 | { |
225 | } | |
226 | ||
72835c86 | 227 | static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *memcg) |
7a81b88c KH |
228 | { |
229 | } | |
230 | ||
569b846d KH |
231 | static inline void mem_cgroup_uncharge_start(void) |
232 | { | |
233 | } | |
234 | ||
235 | static inline void mem_cgroup_uncharge_end(void) | |
236 | { | |
237 | } | |
238 | ||
8a9f3ccd BS |
239 | static inline void mem_cgroup_uncharge_page(struct page *page) |
240 | { | |
241 | } | |
242 | ||
69029cd5 KH |
243 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
244 | { | |
245 | } | |
246 | ||
925b7673 JW |
247 | static inline struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone, |
248 | struct mem_cgroup *memcg) | |
08e552c6 | 249 | { |
925b7673 | 250 | return &zone->lruvec; |
08e552c6 KH |
251 | } |
252 | ||
fa9add64 HD |
253 | static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page, |
254 | struct zone *zone) | |
66e1707b | 255 | { |
925b7673 | 256 | return &zone->lruvec; |
66e1707b BS |
257 | } |
258 | ||
e42d9d5d WF |
259 | static inline struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page) |
260 | { | |
261 | return NULL; | |
262 | } | |
263 | ||
a433658c KM |
264 | static inline struct mem_cgroup *try_get_mem_cgroup_from_mm(struct mm_struct *mm) |
265 | { | |
266 | return NULL; | |
267 | } | |
268 | ||
587af308 | 269 | static inline bool mm_match_cgroup(struct mm_struct *mm, |
c0ff4b85 | 270 | struct mem_cgroup *memcg) |
bed7161a | 271 | { |
587af308 | 272 | return true; |
bed7161a BS |
273 | } |
274 | ||
4c4a2214 | 275 | static inline int task_in_mem_cgroup(struct task_struct *task, |
c0ff4b85 | 276 | const struct mem_cgroup *memcg) |
4c4a2214 DR |
277 | { |
278 | return 1; | |
279 | } | |
280 | ||
c0ff4b85 R |
281 | static inline struct cgroup_subsys_state |
282 | *mem_cgroup_css(struct mem_cgroup *memcg) | |
d324236b WF |
283 | { |
284 | return NULL; | |
285 | } | |
286 | ||
0030f535 | 287 | static inline void |
ac39cf8c | 288 | mem_cgroup_prepare_migration(struct page *page, struct page *newpage, |
0030f535 | 289 | struct mem_cgroup **memcgp) |
ae41be37 | 290 | { |
ae41be37 KH |
291 | } |
292 | ||
c0ff4b85 | 293 | static inline void mem_cgroup_end_migration(struct mem_cgroup *memcg, |
50de1dd9 | 294 | struct page *oldpage, struct page *newpage, bool migration_ok) |
ae41be37 KH |
295 | { |
296 | } | |
297 | ||
5660048c JW |
298 | static inline struct mem_cgroup * |
299 | mem_cgroup_iter(struct mem_cgroup *root, | |
300 | struct mem_cgroup *prev, | |
301 | struct mem_cgroup_reclaim_cookie *reclaim) | |
302 | { | |
303 | return NULL; | |
304 | } | |
305 | ||
306 | static inline void mem_cgroup_iter_break(struct mem_cgroup *root, | |
307 | struct mem_cgroup *prev) | |
308 | { | |
309 | } | |
310 | ||
f8d66542 HT |
311 | static inline bool mem_cgroup_disabled(void) |
312 | { | |
313 | return true; | |
314 | } | |
a636b327 | 315 | |
14797e23 | 316 | static inline int |
c56d5c7d | 317 | mem_cgroup_inactive_anon_is_low(struct lruvec *lruvec) |
14797e23 KM |
318 | { |
319 | return 1; | |
320 | } | |
321 | ||
56e49d21 | 322 | static inline int |
c56d5c7d | 323 | mem_cgroup_inactive_file_is_low(struct lruvec *lruvec) |
56e49d21 RR |
324 | { |
325 | return 1; | |
326 | } | |
327 | ||
a3d8e054 | 328 | static inline unsigned long |
4d7dcca2 | 329 | mem_cgroup_get_lru_size(struct lruvec *lruvec, enum lru_list lru) |
a3d8e054 KM |
330 | { |
331 | return 0; | |
332 | } | |
333 | ||
fa9add64 HD |
334 | static inline void |
335 | mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, | |
336 | int increment) | |
3e2f41f1 | 337 | { |
3e2f41f1 KM |
338 | } |
339 | ||
e222432b BS |
340 | static inline void |
341 | mem_cgroup_print_oom_info(struct mem_cgroup *memcg, struct task_struct *p) | |
342 | { | |
343 | } | |
344 | ||
89c06bd5 KH |
345 | static inline void mem_cgroup_begin_update_page_stat(struct page *page, |
346 | bool *locked, unsigned long *flags) | |
347 | { | |
348 | } | |
349 | ||
350 | static inline void mem_cgroup_end_update_page_stat(struct page *page, | |
351 | bool *locked, unsigned long *flags) | |
352 | { | |
353 | } | |
354 | ||
2a7106f2 GT |
355 | static inline void mem_cgroup_inc_page_stat(struct page *page, |
356 | enum mem_cgroup_page_stat_item idx) | |
357 | { | |
358 | } | |
359 | ||
360 | static inline void mem_cgroup_dec_page_stat(struct page *page, | |
361 | enum mem_cgroup_page_stat_item idx) | |
d69b042f BS |
362 | { |
363 | } | |
364 | ||
4e416953 BS |
365 | static inline |
366 | unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order, | |
0ae5e89c YH |
367 | gfp_t gfp_mask, |
368 | unsigned long *total_scanned) | |
4e416953 BS |
369 | { |
370 | return 0; | |
371 | } | |
372 | ||
e94c8a9c | 373 | static inline void mem_cgroup_split_huge_fixup(struct page *head) |
ca3e0214 KH |
374 | { |
375 | } | |
376 | ||
456f998e YH |
377 | static inline |
378 | void mem_cgroup_count_vm_event(struct mm_struct *mm, enum vm_event_item idx) | |
379 | { | |
380 | } | |
ab936cbc KH |
381 | static inline void mem_cgroup_replace_page_cache(struct page *oldpage, |
382 | struct page *newpage) | |
383 | { | |
384 | } | |
c255a458 | 385 | #endif /* CONFIG_MEMCG */ |
78fb7466 | 386 | |
c255a458 | 387 | #if !defined(CONFIG_MEMCG) || !defined(CONFIG_DEBUG_VM) |
f212ad7c DN |
388 | static inline bool |
389 | mem_cgroup_bad_page_check(struct page *page) | |
390 | { | |
391 | return false; | |
392 | } | |
393 | ||
394 | static inline void | |
395 | mem_cgroup_print_bad_page(struct page *page) | |
396 | { | |
397 | } | |
398 | #endif | |
399 | ||
e1aab161 GC |
400 | enum { |
401 | UNDER_LIMIT, | |
402 | SOFT_LIMIT, | |
403 | OVER_LIMIT, | |
404 | }; | |
405 | ||
406 | struct sock; | |
cd59085a | 407 | #if defined(CONFIG_INET) && defined(CONFIG_MEMCG_KMEM) |
e1aab161 GC |
408 | void sock_update_memcg(struct sock *sk); |
409 | void sock_release_memcg(struct sock *sk); | |
410 | #else | |
411 | static inline void sock_update_memcg(struct sock *sk) | |
412 | { | |
413 | } | |
414 | static inline void sock_release_memcg(struct sock *sk) | |
415 | { | |
416 | } | |
cd59085a | 417 | #endif /* CONFIG_INET && CONFIG_MEMCG_KMEM */ |
7ae1e1d0 GC |
418 | |
419 | #ifdef CONFIG_MEMCG_KMEM | |
420 | static inline bool memcg_kmem_enabled(void) | |
421 | { | |
422 | return true; | |
423 | } | |
424 | ||
425 | /* | |
426 | * In general, we'll do everything in our power to not incur in any overhead | |
427 | * for non-memcg users for the kmem functions. Not even a function call, if we | |
428 | * can avoid it. | |
429 | * | |
430 | * Therefore, we'll inline all those functions so that in the best case, we'll | |
431 | * see that kmemcg is off for everybody and proceed quickly. If it is on, | |
432 | * we'll still do most of the flag checking inline. We check a lot of | |
433 | * conditions, but because they are pretty simple, they are expected to be | |
434 | * fast. | |
435 | */ | |
436 | bool __memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, | |
437 | int order); | |
438 | void __memcg_kmem_commit_charge(struct page *page, | |
439 | struct mem_cgroup *memcg, int order); | |
440 | void __memcg_kmem_uncharge_pages(struct page *page, int order); | |
441 | ||
442 | /** | |
443 | * memcg_kmem_newpage_charge: verify if a new kmem allocation is allowed. | |
444 | * @gfp: the gfp allocation flags. | |
445 | * @memcg: a pointer to the memcg this was charged against. | |
446 | * @order: allocation order. | |
447 | * | |
448 | * returns true if the memcg where the current task belongs can hold this | |
449 | * allocation. | |
450 | * | |
451 | * We return true automatically if this allocation is not to be accounted to | |
452 | * any memcg. | |
453 | */ | |
454 | static inline bool | |
455 | memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) | |
456 | { | |
457 | if (!memcg_kmem_enabled()) | |
458 | return true; | |
459 | ||
460 | /* | |
461 | * __GFP_NOFAIL allocations will move on even if charging is not | |
462 | * possible. Therefore we don't even try, and have this allocation | |
463 | * unaccounted. We could in theory charge it with | |
464 | * res_counter_charge_nofail, but we hope those allocations are rare, | |
465 | * and won't be worth the trouble. | |
466 | */ | |
467 | if (!(gfp & __GFP_KMEMCG) || (gfp & __GFP_NOFAIL)) | |
468 | return true; | |
469 | if (in_interrupt() || (!current->mm) || (current->flags & PF_KTHREAD)) | |
470 | return true; | |
471 | ||
472 | /* If the test is dying, just let it go. */ | |
473 | if (unlikely(fatal_signal_pending(current))) | |
474 | return true; | |
475 | ||
476 | return __memcg_kmem_newpage_charge(gfp, memcg, order); | |
477 | } | |
478 | ||
479 | /** | |
480 | * memcg_kmem_uncharge_pages: uncharge pages from memcg | |
481 | * @page: pointer to struct page being freed | |
482 | * @order: allocation order. | |
483 | * | |
484 | * there is no need to specify memcg here, since it is embedded in page_cgroup | |
485 | */ | |
486 | static inline void | |
487 | memcg_kmem_uncharge_pages(struct page *page, int order) | |
488 | { | |
489 | if (memcg_kmem_enabled()) | |
490 | __memcg_kmem_uncharge_pages(page, order); | |
491 | } | |
492 | ||
493 | /** | |
494 | * memcg_kmem_commit_charge: embeds correct memcg in a page | |
495 | * @page: pointer to struct page recently allocated | |
496 | * @memcg: the memcg structure we charged against | |
497 | * @order: allocation order. | |
498 | * | |
499 | * Needs to be called after memcg_kmem_newpage_charge, regardless of success or | |
500 | * failure of the allocation. if @page is NULL, this function will revert the | |
501 | * charges. Otherwise, it will commit the memcg given by @memcg to the | |
502 | * corresponding page_cgroup. | |
503 | */ | |
504 | static inline void | |
505 | memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) | |
506 | { | |
507 | if (memcg_kmem_enabled() && memcg) | |
508 | __memcg_kmem_commit_charge(page, memcg, order); | |
509 | } | |
510 | ||
511 | #else | |
512 | static inline bool | |
513 | memcg_kmem_newpage_charge(gfp_t gfp, struct mem_cgroup **memcg, int order) | |
514 | { | |
515 | return true; | |
516 | } | |
517 | ||
518 | static inline void memcg_kmem_uncharge_pages(struct page *page, int order) | |
519 | { | |
520 | } | |
521 | ||
522 | static inline void | |
523 | memcg_kmem_commit_charge(struct page *page, struct mem_cgroup *memcg, int order) | |
524 | { | |
525 | } | |
526 | #endif /* CONFIG_MEMCG_KMEM */ | |
8cdea7c0 BS |
527 | #endif /* _LINUX_MEMCONTROL_H */ |
528 |