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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 PE |
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); | |
9442ec9d HD |
32 | |
33 | #define page_reset_bad_cgroup(page) ((page)->page_cgroup = 0) | |
34 | ||
78fb7466 | 35 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); |
e1a1cd59 BS |
36 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
37 | gfp_t gfp_mask); | |
8a9f3ccd | 38 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); |
3c541e14 | 39 | extern void mem_cgroup_uncharge_page(struct page *page); |
427d5416 | 40 | extern void mem_cgroup_move_lists(struct page *page, bool active); |
66e1707b BS |
41 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
42 | struct list_head *dst, | |
43 | unsigned long *scanned, int order, | |
44 | int mode, struct zone *z, | |
45 | struct mem_cgroup *mem_cont, | |
46 | int active); | |
c7ba5c9e | 47 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
e1a1cd59 BS |
48 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
49 | gfp_t gfp_mask); | |
4c4a2214 | 50 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
3062fc67 | 51 | |
bd845e38 | 52 | #define mm_match_cgroup(mm, cgroup) \ |
60c12b12 | 53 | ((cgroup) == rcu_dereference((mm)->mem_cgroup)) |
8a9f3ccd | 54 | |
ae41be37 KH |
55 | extern int mem_cgroup_prepare_migration(struct page *page); |
56 | extern void mem_cgroup_end_migration(struct page *page); | |
57 | extern void mem_cgroup_page_migration(struct page *page, struct page *newpage); | |
58 | ||
58ae83db KH |
59 | /* |
60 | * For memory reclaim. | |
61 | */ | |
62 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); | |
5932f367 KH |
63 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
64 | ||
6c48a1d0 KH |
65 | extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
66 | extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
67 | int priority); | |
68 | extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
69 | int priority); | |
58ae83db | 70 | |
cc38108e KH |
71 | extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
72 | struct zone *zone, int priority); | |
73 | extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
74 | struct zone *zone, int priority); | |
58ae83db | 75 | |
00f0b825 | 76 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
78fb7466 PE |
77 | static inline void mm_init_cgroup(struct mm_struct *mm, |
78 | struct task_struct *p) | |
79 | { | |
80 | } | |
81 | ||
82 | static inline void mm_free_cgroup(struct mm_struct *mm) | |
83 | { | |
84 | } | |
85 | ||
9442ec9d | 86 | static inline void page_reset_bad_cgroup(struct page *page) |
78fb7466 PE |
87 | { |
88 | } | |
89 | ||
90 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
91 | { | |
92 | return NULL; | |
93 | } | |
94 | ||
e1a1cd59 BS |
95 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
96 | gfp_t gfp_mask) | |
8a9f3ccd BS |
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 | ||
427d5416 | 109 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
66e1707b BS |
110 | { |
111 | } | |
112 | ||
8697d331 | 113 | static inline int mem_cgroup_cache_charge(struct page *page, |
e1a1cd59 BS |
114 | struct mm_struct *mm, |
115 | gfp_t gfp_mask) | |
8697d331 BS |
116 | { |
117 | return 0; | |
118 | } | |
119 | ||
bd845e38 | 120 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 121 | { |
60c12b12 | 122 | return 1; |
bed7161a BS |
123 | } |
124 | ||
4c4a2214 DR |
125 | static inline int task_in_mem_cgroup(struct task_struct *task, |
126 | const struct mem_cgroup *mem) | |
127 | { | |
128 | return 1; | |
129 | } | |
130 | ||
ae41be37 KH |
131 | static inline int mem_cgroup_prepare_migration(struct page *page) |
132 | { | |
133 | return 0; | |
134 | } | |
135 | ||
136 | static inline void mem_cgroup_end_migration(struct page *page) | |
137 | { | |
138 | } | |
139 | ||
140 | static inline void | |
141 | mem_cgroup_page_migration(struct page *page, struct page *newpage) | |
142 | { | |
143 | } | |
144 | ||
58ae83db KH |
145 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
146 | { | |
147 | return 0; | |
148 | } | |
5932f367 KH |
149 | |
150 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
151 | { | |
152 | return 0; | |
153 | } | |
154 | ||
6c48a1d0 KH |
155 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
156 | { | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
161 | int priority) | |
162 | { | |
163 | } | |
164 | ||
165 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
166 | int priority) | |
167 | { | |
168 | } | |
169 | ||
cc38108e KH |
170 | static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
171 | struct zone *zone, int priority) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
177 | struct zone *zone, int priority) | |
178 | { | |
179 | return 0; | |
180 | } | |
78fb7466 PE |
181 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
182 | ||
8cdea7c0 BS |
183 | #endif /* _LINUX_MEMCONTROL_H */ |
184 |