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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 | |
22 | ||
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 | ||
bd845e38 | 64 | #define mm_match_cgroup(mm, cgroup) \ |
cf475ad2 | 65 | ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
8a9f3ccd | 66 | |
e8589cc1 | 67 | extern int |
01b1ae63 KH |
68 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); |
69 | extern void mem_cgroup_end_migration(struct mem_cgroup *mem, | |
70 | struct page *oldpage, struct page *newpage); | |
ae41be37 | 71 | |
58ae83db KH |
72 | /* |
73 | * For memory reclaim. | |
74 | */ | |
75 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
76 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
77 | ||
6c48a1d0 KH |
78 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
79 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
80 | int priority); | |
81 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
82 | int priority); | |
58ae83db | 83 | |
b69408e8 CL |
84 | extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
85 | int priority, enum lru_list lru); | |
58ae83db | 86 | |
c077719b KH |
87 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |
88 | extern int do_swap_account; | |
89 | #endif | |
52d4b9ac | 90 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
7a81b88c KH |
91 | struct mem_cgroup; |
92 | ||
93 | static inline int mem_cgroup_newpage_charge(struct page *page, | |
8289546e | 94 | struct mm_struct *mm, gfp_t gfp_mask) |
8a9f3ccd BS |
95 | { |
96 | return 0; | |
97 | } | |
98 | ||
8289546e HD |
99 | static inline int mem_cgroup_cache_charge(struct page *page, |
100 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 101 | { |
8289546e | 102 | return 0; |
8a9f3ccd BS |
103 | } |
104 | ||
7a81b88c | 105 | static inline int mem_cgroup_try_charge(struct mm_struct *mm, |
8c7c6e34 KH |
106 | gfp_t gfp_mask, struct mem_cgroup **ptr) |
107 | { | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm, | |
112 | struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr) | |
7a81b88c KH |
113 | { |
114 | return 0; | |
115 | } | |
116 | ||
117 | static inline void mem_cgroup_commit_charge_swapin(struct page *page, | |
118 | struct mem_cgroup *ptr) | |
119 | { | |
120 | } | |
121 | ||
122 | static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr) | |
123 | { | |
124 | } | |
125 | ||
8a9f3ccd BS |
126 | static inline void mem_cgroup_uncharge_page(struct page *page) |
127 | { | |
128 | } | |
129 | ||
69029cd5 KH |
130 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
131 | { | |
132 | } | |
133 | ||
c9b0ed51 KH |
134 | static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
135 | { | |
136 | return 0; | |
137 | } | |
138 | ||
08e552c6 KH |
139 | static inline void mem_cgroup_add_lru_list(struct page *page, int lru) |
140 | { | |
141 | } | |
142 | ||
143 | static inline void mem_cgroup_del_lru_list(struct page *page, int lru) | |
144 | { | |
145 | return ; | |
146 | } | |
147 | ||
148 | static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru) | |
149 | { | |
150 | return ; | |
151 | } | |
152 | ||
153 | static inline void mem_cgroup_del_lru(struct page *page) | |
154 | { | |
155 | return ; | |
156 | } | |
157 | ||
158 | static inline void | |
159 | mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to) | |
66e1707b BS |
160 | { |
161 | } | |
162 | ||
bd845e38 | 163 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 164 | { |
60c12b12 | 165 | return 1; |
bed7161a BS |
166 | } |
167 | ||
4c4a2214 DR |
168 | static inline int task_in_mem_cgroup(struct task_struct *task, |
169 | const struct mem_cgroup *mem) | |
170 | { | |
171 | return 1; | |
172 | } | |
173 | ||
e8589cc1 | 174 | static inline int |
01b1ae63 | 175 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) |
ae41be37 KH |
176 | { |
177 | return 0; | |
178 | } | |
179 | ||
01b1ae63 KH |
180 | static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, |
181 | struct page *oldpage, | |
182 | struct page *newpage) | |
ae41be37 KH |
183 | { |
184 | } | |
185 | ||
58ae83db KH |
186 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
187 | { | |
188 | return 0; | |
189 | } | |
5932f367 KH |
190 | |
191 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
192 | { | |
193 | return 0; | |
194 | } | |
195 | ||
6c48a1d0 KH |
196 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
197 | { | |
198 | return 0; | |
199 | } | |
200 | ||
201 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
202 | int priority) | |
203 | { | |
204 | } | |
205 | ||
206 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
207 | int priority) | |
208 | { | |
209 | } | |
210 | ||
b69408e8 CL |
211 | static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
212 | struct zone *zone, int priority, | |
213 | enum lru_list lru) | |
cc38108e KH |
214 | { |
215 | return 0; | |
216 | } | |
78fb7466 PE |
217 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
218 | ||
8cdea7c0 BS |
219 | #endif /* _LINUX_MEMCONTROL_H */ |
220 |