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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 | |
9442ec9d HD |
30 | #define page_reset_bad_cgroup(page) ((page)->page_cgroup = 0) |
31 | ||
78fb7466 | 32 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); |
e1a1cd59 BS |
33 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
34 | gfp_t gfp_mask); | |
8289546e HD |
35 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
36 | gfp_t gfp_mask); | |
3c541e14 | 37 | extern void mem_cgroup_uncharge_page(struct page *page); |
427d5416 | 38 | extern void mem_cgroup_move_lists(struct page *page, bool active); |
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, | |
44 | int active); | |
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 | |
e8589cc1 KH |
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); |
e8589cc1 | 56 | extern int mem_cgroup_getref(struct page *page); |
ae41be37 | 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 | ||
6c48a1d0 KH |
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 | |
00f0b825 | 75 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
9442ec9d | 76 | static inline void page_reset_bad_cgroup(struct page *page) |
78fb7466 PE |
77 | { |
78 | } | |
79 | ||
80 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
81 | { | |
82 | return NULL; | |
83 | } | |
84 | ||
8289546e HD |
85 | static inline int mem_cgroup_charge(struct page *page, |
86 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd BS |
87 | { |
88 | return 0; | |
89 | } | |
90 | ||
8289546e HD |
91 | static inline int mem_cgroup_cache_charge(struct page *page, |
92 | struct mm_struct *mm, gfp_t gfp_mask) | |
8a9f3ccd | 93 | { |
8289546e | 94 | return 0; |
8a9f3ccd BS |
95 | } |
96 | ||
97 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
98 | { | |
99 | } | |
100 | ||
427d5416 | 101 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
66e1707b BS |
102 | { |
103 | } | |
104 | ||
bd845e38 | 105 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
bed7161a | 106 | { |
60c12b12 | 107 | return 1; |
bed7161a BS |
108 | } |
109 | ||
4c4a2214 DR |
110 | static inline int task_in_mem_cgroup(struct task_struct *task, |
111 | const struct mem_cgroup *mem) | |
112 | { | |
113 | return 1; | |
114 | } | |
115 | ||
e8589cc1 KH |
116 | static inline int |
117 | mem_cgroup_prepare_migration(struct page *page, struct page *newpage) | |
ae41be37 KH |
118 | { |
119 | return 0; | |
120 | } | |
121 | ||
122 | static inline void mem_cgroup_end_migration(struct page *page) | |
123 | { | |
124 | } | |
125 | ||
e8589cc1 | 126 | static inline void mem_cgroup_getref(struct page *page) |
ae41be37 KH |
127 | { |
128 | } | |
129 | ||
58ae83db KH |
130 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
131 | { | |
132 | return 0; | |
133 | } | |
5932f367 KH |
134 | |
135 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) | |
136 | { | |
137 | return 0; | |
138 | } | |
139 | ||
6c48a1d0 KH |
140 | static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
141 | { | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, | |
146 | int priority) | |
147 | { | |
148 | } | |
149 | ||
150 | static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, | |
151 | int priority) | |
152 | { | |
153 | } | |
154 | ||
cc38108e KH |
155 | static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem, |
156 | struct zone *zone, int priority) | |
157 | { | |
158 | return 0; | |
159 | } | |
160 | ||
161 | static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, | |
162 | struct zone *zone, int priority) | |
163 | { | |
164 | return 0; | |
165 | } | |
78fb7466 PE |
166 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
167 | ||
8cdea7c0 BS |
168 | #endif /* _LINUX_MEMCONTROL_H */ |
169 |