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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> |
78fb7466 PE |
23 | struct mem_cgroup; |
24 | struct page_cgroup; | |
8697d331 BS |
25 | struct page; |
26 | struct mm_struct; | |
78fb7466 | 27 | |
00f0b825 | 28 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR |
78fb7466 | 29 | |
7a81b88c | 30 | extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm, |
e1a1cd59 | 31 | gfp_t gfp_mask); |
7a81b88c KH |
32 | /* for swap handling */ |
33 | extern int mem_cgroup_try_charge(struct mm_struct *mm, | |
34 | gfp_t gfp_mask, struct mem_cgroup **ptr); | |
8c7c6e34 KH |
35 | extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm, |
36 | struct page *page, gfp_t mask, struct mem_cgroup **ptr); | |
7a81b88c KH |
37 | extern void mem_cgroup_commit_charge_swapin(struct page *page, |
38 | struct mem_cgroup *ptr); | |
39 | extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr); | |
40 | ||
8289546e HD |
41 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
42 | gfp_t gfp_mask); | |
08e552c6 KH |
43 | extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru); |
44 | extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru); | |
45 | extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru); | |
46 | extern void mem_cgroup_del_lru(struct page *page); | |
47 | extern void mem_cgroup_move_lists(struct page *page, | |
48 | enum lru_list from, enum lru_list to); | |
3c541e14 | 49 | extern void mem_cgroup_uncharge_page(struct page *page); |
69029cd5 | 50 | extern void mem_cgroup_uncharge_cache_page(struct page *page); |
c9b0ed51 KH |
51 | extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
52 | ||
66e1707b BS |
53 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
54 | struct list_head *dst, | |
55 | unsigned long *scanned, int order, | |
56 | int mode, struct zone *z, | |
57 | struct mem_cgroup *mem_cont, | |
4f98a2fe | 58 | int active, int file); |
c7ba5c9e | 59 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
4c4a2214 | 60 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 61 | |
cf475ad2 BS |
62 | extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
63 | ||
2e4d4091 LJ |
64 | static inline |
65 | int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup) | |
66 | { | |
67 | struct mem_cgroup *mem; | |
68 | rcu_read_lock(); | |
69 | mem = mem_cgroup_from_task((mm)->owner); | |
70 | rcu_read_unlock(); | |
71 | return cgroup == mem; | |
72 | } | |
8a9f3ccd | 73 | |
e8589cc1 | 74 | extern int |
01b1ae63 KH |
75 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); |
76 | extern void mem_cgroup_end_migration(struct mem_cgroup *mem, | |
77 | struct page *oldpage, struct page *newpage); | |
ae41be37 | 78 | |
58ae83db KH |
79 | /* |
80 | * For memory reclaim. | |
81 | */ | |
82 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
83 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
84 | ||
6c48a1d0 KH |
85 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
86 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
87 | int priority); | |
88 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
89 | int priority); | |
58ae83db | 90 | |
b69408e8 CL |
91 | extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
92 | int priority, enum lru_list lru); | |
58ae83db | 93 | |
c077719b KH |
94 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |
95 | extern int do_swap_account; | |
96 | #endif | |
f8d66542 HT |
97 | |
98 | static inline bool mem_cgroup_disabled(void) | |
99 | { | |
100 | if (mem_cgroup_subsys.disabled) | |
101 | return true; | |
102 | return false; | |
103 | } | |
104 | ||
a636b327 KH |
105 | extern bool mem_cgroup_oom_called(struct task_struct *task); |
106 | ||
52d4b9ac | 107 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
7a81b88c KH |
108 | struct mem_cgroup; |
109 | ||
110 | static inline int mem_cgroup_newpage_charge(struct page *page, | |
8289546e | 111 | struct mm_struct *mm, gfp_t gfp_mask) |
8a9f3ccd BS |
112 | { |
113 | return 0; | |
114 | } | |
115 | ||
8289546e HD |
116 | static inline int mem_cgroup_cache_charge(struct page *page, |
117 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 118 | { |
8289546e | 119 | return 0; |
8a9f3ccd BS |
120 | } |
121 | ||
7a81b88c | 122 | static inline int mem_cgroup_try_charge(struct mm_struct *mm, |
8c7c6e34 KH |
123 | gfp_t gfp_mask, struct mem_cgroup **ptr) |
124 | { | |
125 | return 0; | |
126 | } | |
127 | ||
128 | static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm, | |
129 | struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr) | |
7a81b88c KH |
130 | { |
131 | return 0; | |
132 | } | |
133 | ||
134 | static inline void mem_cgroup_commit_charge_swapin(struct page *page, | |
135 | struct mem_cgroup *ptr) | |
136 | { | |
137 | } | |
138 | ||
139 | static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr) | |
140 | { | |
141 | } | |
142 | ||
8a9f3ccd BS |
143 | static inline void mem_cgroup_uncharge_page(struct page *page) |
144 | { | |
145 | } | |
146 | ||
69029cd5 KH |
147 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
148 | { | |
149 | } | |
150 | ||
c9b0ed51 KH |
151 | static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
152 | { | |
153 | return 0; | |
154 | } | |
155 | ||
08e552c6 KH |
156 | static inline void mem_cgroup_add_lru_list(struct page *page, int lru) |
157 | { | |
158 | } | |
159 | ||
160 | static inline void mem_cgroup_del_lru_list(struct page *page, int lru) | |
161 | { | |
162 | return ; | |
163 | } | |
164 | ||
165 | static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru) | |
166 | { | |
167 | return ; | |
168 | } | |
169 | ||
170 | static inline void mem_cgroup_del_lru(struct page *page) | |
171 | { | |
172 | return ; | |
173 | } | |
174 | ||
175 | static inline void | |
176 | mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to) | |
66e1707b BS |
177 | { |
178 | } | |
179 | ||
bd845e38 | 180 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 181 | { |
60c12b12 | 182 | return 1; |
bed7161a BS |
183 | } |
184 | ||
4c4a2214 DR |
185 | static inline int task_in_mem_cgroup(struct task_struct *task, |
186 | const struct mem_cgroup *mem) | |
187 | { | |
188 | return 1; | |
189 | } | |
190 | ||
e8589cc1 | 191 | static inline int |
01b1ae63 | 192 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) |
ae41be37 KH |
193 | { |
194 | return 0; | |
195 | } | |
196 | ||
01b1ae63 KH |
197 | static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, |
198 | struct page *oldpage, | |
199 | struct page *newpage) | |
ae41be37 KH |
200 | { |
201 | } | |
202 | ||
58ae83db KH |
203 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
204 | { | |
205 | return 0; | |
206 | } | |
5932f367 KH |
207 | |
208 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
209 | { | |
210 | return 0; | |
211 | } | |
212 | ||
6c48a1d0 KH |
213 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
214 | { | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
219 | int priority) | |
220 | { | |
221 | } | |
222 | ||
223 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
224 | int priority) | |
225 | { | |
226 | } | |
227 | ||
b69408e8 CL |
228 | static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
229 | struct zone *zone, int priority, | |
230 | enum lru_list lru) | |
cc38108e KH |
231 | { |
232 | return 0; | |
233 | } | |
f8d66542 HT |
234 | |
235 | static inline bool mem_cgroup_disabled(void) | |
236 | { | |
237 | return true; | |
238 | } | |
a636b327 KH |
239 | |
240 | static inline bool mem_cgroup_oom_called(struct task_struct *task) | |
241 | { | |
242 | return false; | |
243 | } | |
78fb7466 PE |
244 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
245 | ||
8cdea7c0 BS |
246 | #endif /* _LINUX_MEMCONTROL_H */ |
247 |