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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 | * | |
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6 | * Copyright 2007 OpenVZ SWsoft Inc |
7 | * Author: Pavel Emelianov <xemul@openvz.org> | |
8 | * | |
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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); | |
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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); |
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41 | extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active); |
42 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, | |
43 | struct list_head *dst, | |
44 | unsigned long *scanned, int order, | |
45 | int mode, struct zone *z, | |
46 | struct mem_cgroup *mem_cont, | |
47 | int active); | |
c7ba5c9e | 48 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
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49 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
50 | gfp_t gfp_mask); | |
4c4a2214 | 51 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
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52 | |
53 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) | |
54 | { | |
55 | return rcu_dereference(mm->mem_cgroup); | |
56 | } | |
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57 | |
58 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
59 | { | |
60 | mem_cgroup_uncharge(page_get_page_cgroup(page)); | |
61 | } | |
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62 | |
63 | #else /* CONFIG_CGROUP_MEM_CONT */ | |
64 | static inline void mm_init_cgroup(struct mm_struct *mm, | |
65 | struct task_struct *p) | |
66 | { | |
67 | } | |
68 | ||
69 | static inline void mm_free_cgroup(struct mm_struct *mm) | |
70 | { | |
71 | } | |
72 | ||
73 | static inline void page_assign_page_cgroup(struct page *page, | |
74 | struct page_cgroup *pc) | |
75 | { | |
76 | } | |
77 | ||
78 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
79 | { | |
80 | return NULL; | |
81 | } | |
82 | ||
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83 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
84 | gfp_t gfp_mask) | |
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85 | { |
86 | return 0; | |
87 | } | |
88 | ||
89 | static inline void mem_cgroup_uncharge(struct page_cgroup *pc) | |
90 | { | |
91 | } | |
92 | ||
93 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
94 | { | |
95 | } | |
96 | ||
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97 | static inline void mem_cgroup_move_lists(struct page_cgroup *pc, |
98 | bool active) | |
99 | { | |
100 | } | |
101 | ||
8697d331 | 102 | static inline int mem_cgroup_cache_charge(struct page *page, |
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103 | struct mm_struct *mm, |
104 | gfp_t gfp_mask) | |
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105 | { |
106 | return 0; | |
107 | } | |
108 | ||
3062fc67 | 109 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) |
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110 | { |
111 | return NULL; | |
112 | } | |
113 | ||
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114 | static inline int task_in_mem_cgroup(struct task_struct *task, |
115 | const struct mem_cgroup *mem) | |
116 | { | |
117 | return 1; | |
118 | } | |
119 | ||
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120 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
121 | ||
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122 | #endif /* _LINUX_MEMCONTROL_H */ |
123 |