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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 | struct mem_cgroup; |
24 | struct page_cgroup; | |
25 | ||
26 | #ifdef CONFIG_CGROUP_MEM_CONT | |
27 | ||
28 | extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p); | |
29 | extern void mm_free_cgroup(struct mm_struct *mm); | |
30 | extern void page_assign_page_cgroup(struct page *page, | |
31 | struct page_cgroup *pc); | |
32 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); | |
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33 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm); |
34 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); | |
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35 | extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active); |
36 | extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, | |
37 | struct list_head *dst, | |
38 | unsigned long *scanned, int order, | |
39 | int mode, struct zone *z, | |
40 | struct mem_cgroup *mem_cont, | |
41 | int active); | |
c7ba5c9e | 42 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
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43 | |
44 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
45 | { | |
46 | mem_cgroup_uncharge(page_get_page_cgroup(page)); | |
47 | } | |
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48 | |
49 | #else /* CONFIG_CGROUP_MEM_CONT */ | |
50 | static inline void mm_init_cgroup(struct mm_struct *mm, | |
51 | struct task_struct *p) | |
52 | { | |
53 | } | |
54 | ||
55 | static inline void mm_free_cgroup(struct mm_struct *mm) | |
56 | { | |
57 | } | |
58 | ||
59 | static inline void page_assign_page_cgroup(struct page *page, | |
60 | struct page_cgroup *pc) | |
61 | { | |
62 | } | |
63 | ||
64 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) | |
65 | { | |
66 | return NULL; | |
67 | } | |
68 | ||
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69 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm) |
70 | { | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static inline void mem_cgroup_uncharge(struct page_cgroup *pc) | |
75 | { | |
76 | } | |
77 | ||
78 | static inline void mem_cgroup_uncharge_page(struct page *page) | |
79 | { | |
80 | } | |
81 | ||
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82 | static inline void mem_cgroup_move_lists(struct page_cgroup *pc, |
83 | bool active) | |
84 | { | |
85 | } | |
86 | ||
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87 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
88 | ||
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89 | #endif /* _LINUX_MEMCONTROL_H */ |
90 |