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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 | #include <linux/rcupdate.h> |
24 | #include <linux/mm.h> | |
25 | ||
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26 | struct mem_cgroup; |
27 | struct page_cgroup; | |
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28 | struct page; |
29 | struct mm_struct; | |
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30 | |
31 | #ifdef CONFIG_CGROUP_MEM_CONT | |
32 | ||
33 | extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p); | |
34 | extern void mm_free_cgroup(struct mm_struct *mm); | |
35 | extern void page_assign_page_cgroup(struct page *page, | |
36 | struct page_cgroup *pc); | |
37 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); | |
e1a1cd59 BS |
38 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
39 | gfp_t gfp_mask); | |
8a9f3ccd | 40 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); |
3c541e14 | 41 | extern void mem_cgroup_uncharge_page(struct page *page); |
66e1707b BS |
42 | extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active); |
43 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, | |
44 | struct list_head *dst, | |
45 | unsigned long *scanned, int order, | |
46 | int mode, struct zone *z, | |
47 | struct mem_cgroup *mem_cont, | |
48 | int active); | |
c7ba5c9e | 49 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
e1a1cd59 BS |
50 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
51 | gfp_t gfp_mask); | |
4c4a2214 | 52 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 DR |
53 | |
54 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) | |
55 | { | |
56 | return rcu_dereference(mm->mem_cgroup); | |
57 | } | |
8a9f3ccd | 58 | |
ae41be37 KH |
59 | extern int mem_cgroup_prepare_migration(struct page *page); |
60 | extern void mem_cgroup_end_migration(struct page *page); | |
61 | extern void mem_cgroup_page_migration(struct page *page, struct page *newpage); | |
62 | ||
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63 | /* |
64 | * For memory reclaim. | |
65 | */ | |
66 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
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67 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
68 | ||
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69 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
70 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
71 | int priority); | |
72 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
73 | int priority); | |
58ae83db | 74 | |
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75 | extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
76 | struct zone *zone, int priority); | |
77 | extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
78 | struct zone *zone, int priority); | |
58ae83db | 79 | |
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80 | #else /* CONFIG_CGROUP_MEM_CONT */ |
81 | static inline void mm_init_cgroup(struct mm_struct *mm, | |
82 | struct task_struct *p) | |
83 | { | |
84 | } | |
85 | ||
86 | static inline void mm_free_cgroup(struct mm_struct *mm) | |
87 | { | |
88 | } | |
89 | ||
90 | static inline void page_assign_page_cgroup(struct page *page, | |
91 | struct page_cgroup *pc) | |
92 | { | |
93 | } | |
94 | ||
95 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
96 | { | |
97 | return NULL; | |
98 | } | |
99 | ||
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100 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
101 | gfp_t gfp_mask) | |
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102 | { |
103 | return 0; | |
104 | } | |
105 | ||
106 | static inline void mem_cgroup_uncharge(struct page_cgroup *pc) | |
107 | { | |
108 | } | |
109 | ||
110 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
111 | { | |
112 | } | |
113 | ||
66e1707b BS |
114 | static inline void mem_cgroup_move_lists(struct page_cgroup *pc, |
115 | bool active) | |
116 | { | |
117 | } | |
118 | ||
8697d331 | 119 | static inline int mem_cgroup_cache_charge(struct page *page, |
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120 | struct mm_struct *mm, |
121 | gfp_t gfp_mask) | |
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122 | { |
123 | return 0; | |
124 | } | |
125 | ||
3062fc67 | 126 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) |
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127 | { |
128 | return NULL; | |
129 | } | |
130 | ||
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131 | static inline int task_in_mem_cgroup(struct task_struct *task, |
132 | const struct mem_cgroup *mem) | |
133 | { | |
134 | return 1; | |
135 | } | |
136 | ||
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137 | static inline int mem_cgroup_prepare_migration(struct page *page) |
138 | { | |
139 | return 0; | |
140 | } | |
141 | ||
142 | static inline void mem_cgroup_end_migration(struct page *page) | |
143 | { | |
144 | } | |
145 | ||
146 | static inline void | |
147 | mem_cgroup_page_migration(struct page *page, struct page *newpage) | |
148 | { | |
149 | } | |
150 | ||
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151 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
152 | { | |
153 | return 0; | |
154 | } | |
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155 | |
156 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
157 | { | |
158 | return 0; | |
159 | } | |
160 | ||
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161 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
162 | { | |
163 | return 0; | |
164 | } | |
165 | ||
166 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
167 | int priority) | |
168 | { | |
169 | } | |
170 | ||
171 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
172 | int priority) | |
173 | { | |
174 | } | |
175 | ||
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176 | static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
177 | struct zone *zone, int priority) | |
178 | { | |
179 | return 0; | |
180 | } | |
181 | ||
182 | static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
183 | struct zone *zone, int priority) | |
184 | { | |
185 | return 0; | |
186 | } | |
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187 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
188 | ||
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189 | #endif /* _LINUX_MEMCONTROL_H */ |
190 |