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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 | ||
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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 | |
e1a1cd59 BS |
30 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
31 | gfp_t gfp_mask); | |
8289546e HD |
32 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
33 | gfp_t gfp_mask); | |
894bc310 | 34 | extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru); |
3c541e14 | 35 | extern void mem_cgroup_uncharge_page(struct page *page); |
69029cd5 | 36 | extern void mem_cgroup_uncharge_cache_page(struct page *page); |
c9b0ed51 KH |
37 | extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
38 | ||
66e1707b BS |
39 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
40 | struct list_head *dst, | |
41 | unsigned long *scanned, int order, | |
42 | int mode, struct zone *z, | |
43 | struct mem_cgroup *mem_cont, | |
4f98a2fe | 44 | int active, int file); |
c7ba5c9e | 45 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
4c4a2214 | 46 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 47 | |
cf475ad2 BS |
48 | extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
49 | ||
bd845e38 | 50 | #define mm_match_cgroup(mm, cgroup) \ |
cf475ad2 | 51 | ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
8a9f3ccd | 52 | |
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53 | extern int |
54 | mem_cgroup_prepare_migration(struct page *page, struct page *newpage); | |
ae41be37 | 55 | extern void mem_cgroup_end_migration(struct page *page); |
ae41be37 | 56 | |
58ae83db KH |
57 | /* |
58 | * For memory reclaim. | |
59 | */ | |
60 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
61 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
62 | ||
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63 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
64 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
65 | int priority); | |
66 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
67 | int priority); | |
58ae83db | 68 | |
b69408e8 CL |
69 | extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
70 | int priority, enum lru_list lru); | |
58ae83db | 71 | |
78fb7466 | 72 | |
52d4b9ac | 73 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
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74 | static inline int mem_cgroup_charge(struct page *page, |
75 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd BS |
76 | { |
77 | return 0; | |
78 | } | |
79 | ||
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80 | static inline int mem_cgroup_cache_charge(struct page *page, |
81 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 82 | { |
8289546e | 83 | return 0; |
8a9f3ccd BS |
84 | } |
85 | ||
86 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
87 | { | |
88 | } | |
89 | ||
69029cd5 KH |
90 | static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
91 | { | |
92 | } | |
93 | ||
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94 | static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
95 | { | |
96 | return 0; | |
97 | } | |
98 | ||
427d5416 | 99 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
66e1707b BS |
100 | { |
101 | } | |
102 | ||
bd845e38 | 103 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 104 | { |
60c12b12 | 105 | return 1; |
bed7161a BS |
106 | } |
107 | ||
4c4a2214 DR |
108 | static inline int task_in_mem_cgroup(struct task_struct *task, |
109 | const struct mem_cgroup *mem) | |
110 | { | |
111 | return 1; | |
112 | } | |
113 | ||
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114 | static inline int |
115 | mem_cgroup_prepare_migration(struct page *page, struct page *newpage) | |
ae41be37 KH |
116 | { |
117 | return 0; | |
118 | } | |
119 | ||
120 | static inline void mem_cgroup_end_migration(struct page *page) | |
121 | { | |
122 | } | |
123 | ||
58ae83db KH |
124 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
125 | { | |
126 | return 0; | |
127 | } | |
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128 | |
129 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
130 | { | |
131 | return 0; | |
132 | } | |
133 | ||
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134 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
135 | { | |
136 | return 0; | |
137 | } | |
138 | ||
139 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
140 | int priority) | |
141 | { | |
142 | } | |
143 | ||
144 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
145 | int priority) | |
146 | { | |
147 | } | |
148 | ||
b69408e8 CL |
149 | static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
150 | struct zone *zone, int priority, | |
151 | enum lru_list lru) | |
cc38108e KH |
152 | { |
153 | return 0; | |
154 | } | |
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155 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
156 | ||
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157 | #endif /* _LINUX_MEMCONTROL_H */ |
158 |