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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); | |
894bc310 | 43 | extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru); |
3c541e14 | 44 | extern void mem_cgroup_uncharge_page(struct page *page); |
69029cd5 | 45 | extern void mem_cgroup_uncharge_cache_page(struct page *page); |
c9b0ed51 KH |
46 | extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
47 | ||
66e1707b BS |
48 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
49 | struct list_head *dst, | |
50 | unsigned long *scanned, int order, | |
51 | int mode, struct zone *z, | |
52 | struct mem_cgroup *mem_cont, | |
4f98a2fe | 53 | int active, int file); |
c7ba5c9e | 54 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
4c4a2214 | 55 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 56 | |
cf475ad2 BS |
57 | extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
58 | ||
bd845e38 | 59 | #define mm_match_cgroup(mm, cgroup) \ |
cf475ad2 | 60 | ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
8a9f3ccd | 61 | |
e8589cc1 | 62 | extern int |
01b1ae63 KH |
63 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); |
64 | extern void mem_cgroup_end_migration(struct mem_cgroup *mem, | |
65 | struct page *oldpage, struct page *newpage); | |
ae41be37 | 66 | |
58ae83db KH |
67 | /* |
68 | * For memory reclaim. | |
69 | */ | |
70 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
71 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
72 | ||
6c48a1d0 KH |
73 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
74 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
75 | int priority); | |
76 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
77 | int priority); | |
58ae83db | 78 | |
b69408e8 CL |
79 | extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
80 | int priority, enum lru_list lru); | |
58ae83db | 81 | |
c077719b KH |
82 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |
83 | extern int do_swap_account; | |
84 | #endif | |
52d4b9ac | 85 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
7a81b88c KH |
86 | struct mem_cgroup; |
87 | ||
88 | static inline int mem_cgroup_newpage_charge(struct page *page, | |
8289546e | 89 | struct mm_struct *mm, gfp_t gfp_mask) |
8a9f3ccd BS |
90 | { |
91 | return 0; | |
92 | } | |
93 | ||
8289546e HD |
94 | static inline int mem_cgroup_cache_charge(struct page *page, |
95 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 96 | { |
8289546e | 97 | return 0; |
8a9f3ccd BS |
98 | } |
99 | ||
7a81b88c | 100 | static inline int mem_cgroup_try_charge(struct mm_struct *mm, |
8c7c6e34 KH |
101 | gfp_t gfp_mask, struct mem_cgroup **ptr) |
102 | { | |
103 | return 0; | |
104 | } | |
105 | ||
106 | static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm, | |
107 | struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr) | |
7a81b88c KH |
108 | { |
109 | return 0; | |
110 | } | |
111 | ||
112 | static inline void mem_cgroup_commit_charge_swapin(struct page *page, | |
113 | struct mem_cgroup *ptr) | |
114 | { | |
115 | } | |
116 | ||
117 | static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr) | |
118 | { | |
119 | } | |
120 | ||
8a9f3ccd BS |
121 | static inline void mem_cgroup_uncharge_page(struct page *page) |
122 | { | |
123 | } | |
124 | ||
69029cd5 KH |
125 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
126 | { | |
127 | } | |
128 | ||
c9b0ed51 KH |
129 | static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
130 | { | |
131 | return 0; | |
132 | } | |
133 | ||
427d5416 | 134 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
66e1707b BS |
135 | { |
136 | } | |
137 | ||
bd845e38 | 138 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 139 | { |
60c12b12 | 140 | return 1; |
bed7161a BS |
141 | } |
142 | ||
4c4a2214 DR |
143 | static inline int task_in_mem_cgroup(struct task_struct *task, |
144 | const struct mem_cgroup *mem) | |
145 | { | |
146 | return 1; | |
147 | } | |
148 | ||
e8589cc1 | 149 | static inline int |
01b1ae63 | 150 | mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) |
ae41be37 KH |
151 | { |
152 | return 0; | |
153 | } | |
154 | ||
01b1ae63 KH |
155 | static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, |
156 | struct page *oldpage, | |
157 | struct page *newpage) | |
ae41be37 KH |
158 | { |
159 | } | |
160 | ||
58ae83db KH |
161 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
162 | { | |
163 | return 0; | |
164 | } | |
5932f367 KH |
165 | |
166 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
167 | { | |
168 | return 0; | |
169 | } | |
170 | ||
6c48a1d0 KH |
171 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
177 | int priority) | |
178 | { | |
179 | } | |
180 | ||
181 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
182 | int priority) | |
183 | { | |
184 | } | |
185 | ||
b69408e8 CL |
186 | static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
187 | struct zone *zone, int priority, | |
188 | enum lru_list lru) | |
cc38108e KH |
189 | { |
190 | return 0; | |
191 | } | |
78fb7466 PE |
192 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
193 | ||
8cdea7c0 BS |
194 | #endif /* _LINUX_MEMCONTROL_H */ |
195 |