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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; | |
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25 | struct page; |
26 | struct mm_struct; | |
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27 | |
28 | #ifdef CONFIG_CGROUP_MEM_CONT | |
29 | ||
30 | extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p); | |
31 | extern void mm_free_cgroup(struct mm_struct *mm); | |
32 | extern void page_assign_page_cgroup(struct page *page, | |
33 | struct page_cgroup *pc); | |
34 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); | |
e1a1cd59 BS |
35 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
36 | gfp_t gfp_mask); | |
8a9f3ccd | 37 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); |
3c541e14 | 38 | extern void mem_cgroup_uncharge_page(struct page *page); |
66e1707b BS |
39 | extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active); |
40 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, | |
41 | struct list_head *dst, | |
42 | unsigned long *scanned, int order, | |
43 | int mode, struct zone *z, | |
44 | struct mem_cgroup *mem_cont, | |
45 | int active); | |
c7ba5c9e | 46 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
e1a1cd59 BS |
47 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
48 | gfp_t gfp_mask); | |
4c4a2214 | 49 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 50 | |
60c12b12 DR |
51 | #define vm_match_cgroup(mm, cgroup) \ |
52 | ((cgroup) == rcu_dereference((mm)->mem_cgroup)) | |
8a9f3ccd | 53 | |
ae41be37 KH |
54 | extern int mem_cgroup_prepare_migration(struct page *page); |
55 | extern void mem_cgroup_end_migration(struct page *page); | |
56 | extern void mem_cgroup_page_migration(struct page *page, struct page *newpage); | |
57 | ||
58ae83db KH |
58 | /* |
59 | * For memory reclaim. | |
60 | */ | |
61 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
62 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
63 | ||
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64 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
65 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
66 | int priority); | |
67 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
68 | int priority); | |
58ae83db | 69 | |
cc38108e KH |
70 | extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
71 | struct zone *zone, int priority); | |
72 | extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
73 | struct zone *zone, int priority); | |
58ae83db | 74 | |
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75 | #else /* CONFIG_CGROUP_MEM_CONT */ |
76 | static inline void mm_init_cgroup(struct mm_struct *mm, | |
77 | struct task_struct *p) | |
78 | { | |
79 | } | |
80 | ||
81 | static inline void mm_free_cgroup(struct mm_struct *mm) | |
82 | { | |
83 | } | |
84 | ||
85 | static inline void page_assign_page_cgroup(struct page *page, | |
86 | struct page_cgroup *pc) | |
87 | { | |
88 | } | |
89 | ||
90 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
91 | { | |
92 | return NULL; | |
93 | } | |
94 | ||
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95 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
96 | gfp_t gfp_mask) | |
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97 | { |
98 | return 0; | |
99 | } | |
100 | ||
101 | static inline void mem_cgroup_uncharge(struct page_cgroup *pc) | |
102 | { | |
103 | } | |
104 | ||
105 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
106 | { | |
107 | } | |
108 | ||
66e1707b BS |
109 | static inline void mem_cgroup_move_lists(struct page_cgroup *pc, |
110 | bool active) | |
111 | { | |
112 | } | |
113 | ||
8697d331 | 114 | static inline int mem_cgroup_cache_charge(struct page *page, |
e1a1cd59 BS |
115 | struct mm_struct *mm, |
116 | gfp_t gfp_mask) | |
8697d331 BS |
117 | { |
118 | return 0; | |
119 | } | |
120 | ||
60c12b12 | 121 | static inline int vm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 122 | { |
60c12b12 | 123 | return 1; |
bed7161a BS |
124 | } |
125 | ||
4c4a2214 DR |
126 | static inline int task_in_mem_cgroup(struct task_struct *task, |
127 | const struct mem_cgroup *mem) | |
128 | { | |
129 | return 1; | |
130 | } | |
131 | ||
ae41be37 KH |
132 | static inline int mem_cgroup_prepare_migration(struct page *page) |
133 | { | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static inline void mem_cgroup_end_migration(struct page *page) | |
138 | { | |
139 | } | |
140 | ||
141 | static inline void | |
142 | mem_cgroup_page_migration(struct page *page, struct page *newpage) | |
143 | { | |
144 | } | |
145 | ||
58ae83db KH |
146 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
147 | { | |
148 | return 0; | |
149 | } | |
5932f367 KH |
150 | |
151 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
152 | { | |
153 | return 0; | |
154 | } | |
155 | ||
6c48a1d0 KH |
156 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
157 | { | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
162 | int priority) | |
163 | { | |
164 | } | |
165 | ||
166 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
167 | int priority) | |
168 | { | |
169 | } | |
170 | ||
cc38108e KH |
171 | static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
172 | struct zone *zone, int priority) | |
173 | { | |
174 | return 0; | |
175 | } | |
176 | ||
177 | static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
178 | struct zone *zone, int priority) | |
179 | { | |
180 | return 0; | |
181 | } | |
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182 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
183 | ||
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184 | #endif /* _LINUX_MEMCONTROL_H */ |
185 |