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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); | |
35 | extern void mem_cgroup_commit_charge_swapin(struct page *page, | |
36 | struct mem_cgroup *ptr); | |
37 | extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr); | |
38 | ||
8289546e HD |
39 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
40 | gfp_t gfp_mask); | |
894bc310 | 41 | extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru); |
3c541e14 | 42 | extern void mem_cgroup_uncharge_page(struct page *page); |
69029cd5 | 43 | extern void mem_cgroup_uncharge_cache_page(struct page *page); |
c9b0ed51 KH |
44 | extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
45 | ||
66e1707b BS |
46 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
47 | struct list_head *dst, | |
48 | unsigned long *scanned, int order, | |
49 | int mode, struct zone *z, | |
50 | struct mem_cgroup *mem_cont, | |
4f98a2fe | 51 | int active, int file); |
c7ba5c9e | 52 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
4c4a2214 | 53 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 54 | |
cf475ad2 BS |
55 | extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
56 | ||
bd845e38 | 57 | #define mm_match_cgroup(mm, cgroup) \ |
cf475ad2 | 58 | ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
8a9f3ccd | 59 | |
e8589cc1 | 60 | extern int |
01b1ae63 KH |
61 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); |
62 | extern void mem_cgroup_end_migration(struct mem_cgroup *mem, | |
63 | struct page *oldpage, struct page *newpage); | |
ae41be37 | 64 | |
58ae83db KH |
65 | /* |
66 | * For memory reclaim. | |
67 | */ | |
68 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
69 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
70 | ||
6c48a1d0 KH |
71 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
72 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
73 | int priority); | |
74 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
75 | int priority); | |
58ae83db | 76 | |
b69408e8 CL |
77 | extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
78 | int priority, enum lru_list lru); | |
58ae83db | 79 | |
c077719b KH |
80 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |
81 | extern int do_swap_account; | |
82 | #endif | |
78fb7466 | 83 | |
52d4b9ac | 84 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
7a81b88c KH |
85 | struct mem_cgroup; |
86 | ||
87 | static inline int mem_cgroup_newpage_charge(struct page *page, | |
8289546e | 88 | struct mm_struct *mm, gfp_t gfp_mask) |
8a9f3ccd BS |
89 | { |
90 | return 0; | |
91 | } | |
92 | ||
8289546e HD |
93 | static inline int mem_cgroup_cache_charge(struct page *page, |
94 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 95 | { |
8289546e | 96 | return 0; |
8a9f3ccd BS |
97 | } |
98 | ||
7a81b88c KH |
99 | static inline int mem_cgroup_try_charge(struct mm_struct *mm, |
100 | gfp_t gfp_mask, struct mem_cgroup **ptr) | |
101 | { | |
102 | return 0; | |
103 | } | |
104 | ||
105 | static inline void mem_cgroup_commit_charge_swapin(struct page *page, | |
106 | struct mem_cgroup *ptr) | |
107 | { | |
108 | } | |
109 | ||
110 | static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr) | |
111 | { | |
112 | } | |
113 | ||
8a9f3ccd BS |
114 | static inline void mem_cgroup_uncharge_page(struct page *page) |
115 | { | |
116 | } | |
117 | ||
69029cd5 KH |
118 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
119 | { | |
120 | } | |
121 | ||
c9b0ed51 KH |
122 | static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
123 | { | |
124 | return 0; | |
125 | } | |
126 | ||
427d5416 | 127 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
66e1707b BS |
128 | { |
129 | } | |
130 | ||
bd845e38 | 131 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 132 | { |
60c12b12 | 133 | return 1; |
bed7161a BS |
134 | } |
135 | ||
4c4a2214 DR |
136 | static inline int task_in_mem_cgroup(struct task_struct *task, |
137 | const struct mem_cgroup *mem) | |
138 | { | |
139 | return 1; | |
140 | } | |
141 | ||
e8589cc1 | 142 | static inline int |
01b1ae63 | 143 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) |
ae41be37 KH |
144 | { |
145 | return 0; | |
146 | } | |
147 | ||
01b1ae63 KH |
148 | static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, |
149 | struct page *oldpage, | |
150 | struct page *newpage) | |
ae41be37 KH |
151 | { |
152 | } | |
153 | ||
58ae83db KH |
154 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
155 | { | |
156 | return 0; | |
157 | } | |
5932f367 KH |
158 | |
159 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
160 | { | |
161 | return 0; | |
162 | } | |
163 | ||
6c48a1d0 KH |
164 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
169 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
170 | int priority) | |
171 | { | |
172 | } | |
173 | ||
174 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
175 | int priority) | |
176 | { | |
177 | } | |
178 | ||
b69408e8 CL |
179 | static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
180 | struct zone *zone, int priority, | |
181 | enum lru_list lru) | |
cc38108e KH |
182 | { |
183 | return 0; | |
184 | } | |
78fb7466 PE |
185 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
186 | ||
8cdea7c0 BS |
187 | #endif /* _LINUX_MEMCONTROL_H */ |
188 |