Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 1 | /* memcontrol.h - Memory Controller |
| 2 | * |
| 3 | * Copyright IBM Corporation, 2007 |
| 4 | * Author Balbir Singh <balbir@linux.vnet.ibm.com> |
| 5 | * |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 6 | * Copyright 2007 OpenVZ SWsoft Inc |
| 7 | * Author: Pavel Emelianov <xemul@openvz.org> |
| 8 | * |
Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 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 | |
David Rientjes | 3062fc6 | 2008-02-07 00:14:03 -0800 | [diff] [blame] | 23 | #include <linux/rcupdate.h> |
| 24 | #include <linux/mm.h> |
| 25 | |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 26 | struct mem_cgroup; |
| 27 | struct page_cgroup; |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 28 | struct page; |
| 29 | struct mm_struct; |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 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); |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 38 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
| 39 | gfp_t gfp_mask); |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 40 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); |
Balbir Singh | 66e1707 | 2008-02-07 00:13:56 -0800 | [diff] [blame] | 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); |
Pavel Emelianov | c7ba5c9 | 2008-02-07 00:13:58 -0800 | [diff] [blame] | 48 | extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 49 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
| 50 | gfp_t gfp_mask); |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame^] | 51 | int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
David Rientjes | 3062fc6 | 2008-02-07 00:14:03 -0800 | [diff] [blame] | 52 | |
| 53 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) |
| 54 | { |
| 55 | return rcu_dereference(mm->mem_cgroup); |
| 56 | } |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 57 | |
| 58 | static inline void mem_cgroup_uncharge_page(struct page *page) |
| 59 | { |
| 60 | mem_cgroup_uncharge(page_get_page_cgroup(page)); |
| 61 | } |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 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 | |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 83 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
| 84 | gfp_t gfp_mask) |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 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 | |
Balbir Singh | 66e1707 | 2008-02-07 00:13:56 -0800 | [diff] [blame] | 97 | static inline void mem_cgroup_move_lists(struct page_cgroup *pc, |
| 98 | bool active) |
| 99 | { |
| 100 | } |
| 101 | |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 102 | static inline int mem_cgroup_cache_charge(struct page *page, |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 103 | struct mm_struct *mm, |
| 104 | gfp_t gfp_mask) |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 105 | { |
| 106 | return 0; |
| 107 | } |
| 108 | |
David Rientjes | 3062fc6 | 2008-02-07 00:14:03 -0800 | [diff] [blame] | 109 | static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) |
Balbir Singh | bed7161 | 2008-02-07 00:14:01 -0800 | [diff] [blame] | 110 | { |
| 111 | return NULL; |
| 112 | } |
| 113 | |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame^] | 114 | static inline int task_in_mem_cgroup(struct task_struct *task, |
| 115 | const struct mem_cgroup *mem) |
| 116 | { |
| 117 | return 1; |
| 118 | } |
| 119 | |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 120 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
| 121 | |
Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 122 | #endif /* _LINUX_MEMCONTROL_H */ |
| 123 | |