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 | |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 23 | struct mem_cgroup; |
| 24 | struct page_cgroup; |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 25 | struct page; |
| 26 | struct mm_struct; |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 27 | |
Balbir Singh | 00f0b82 | 2008-03-04 14:28:39 -0800 | [diff] [blame] | 28 | #ifdef CONFIG_CGROUP_MEM_RES_CTLR |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 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); |
Hugh Dickins | 9442ec9d | 2008-03-04 14:29:07 -0800 | [diff] [blame^] | 32 | |
| 33 | #define page_reset_bad_cgroup(page) ((page)->page_cgroup = 0) |
| 34 | |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 35 | extern struct page_cgroup *page_get_page_cgroup(struct page *page); |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 36 | extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
| 37 | gfp_t gfp_mask); |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 38 | extern void mem_cgroup_uncharge(struct page_cgroup *pc); |
Balbir Singh | 3c541e1 | 2008-02-07 00:14:41 -0800 | [diff] [blame] | 39 | extern void mem_cgroup_uncharge_page(struct page *page); |
Hugh Dickins | 427d541 | 2008-03-04 14:29:03 -0800 | [diff] [blame] | 40 | extern void mem_cgroup_move_lists(struct page *page, bool active); |
Balbir Singh | 66e1707 | 2008-02-07 00:13:56 -0800 | [diff] [blame] | 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); |
Pavel Emelianov | c7ba5c9 | 2008-02-07 00:13:58 -0800 | [diff] [blame] | 47 | 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] | 48 | extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
| 49 | gfp_t gfp_mask); |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame] | 50 | 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] | 51 | |
Hugh Dickins | bd845e3 | 2008-03-04 14:29:01 -0800 | [diff] [blame] | 52 | #define mm_match_cgroup(mm, cgroup) \ |
David Rientjes | 60c12b1 | 2008-02-09 00:10:15 -0800 | [diff] [blame] | 53 | ((cgroup) == rcu_dereference((mm)->mem_cgroup)) |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 54 | |
KAMEZAWA Hiroyuki | ae41be3 | 2008-02-07 00:14:10 -0800 | [diff] [blame] | 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 | |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 59 | /* |
| 60 | * For memory reclaim. |
| 61 | */ |
| 62 | extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); |
KAMEZAWA Hiroyuki | 5932f36 | 2008-02-07 00:14:33 -0800 | [diff] [blame] | 63 | extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
| 64 | |
KAMEZAWA Hiroyuki | 6c48a1d | 2008-02-07 00:14:34 -0800 | [diff] [blame] | 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); |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 70 | |
KAMEZAWA Hiroyuki | cc38108 | 2008-02-07 00:14:35 -0800 | [diff] [blame] | 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); |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 75 | |
Balbir Singh | 00f0b82 | 2008-03-04 14:28:39 -0800 | [diff] [blame] | 76 | #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 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 | |
Hugh Dickins | 9442ec9d | 2008-03-04 14:29:07 -0800 | [diff] [blame^] | 86 | static inline void page_reset_bad_cgroup(struct page *page) |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 87 | { |
| 88 | } |
| 89 | |
| 90 | static inline struct page_cgroup *page_get_page_cgroup(struct page *page) |
| 91 | { |
| 92 | return NULL; |
| 93 | } |
| 94 | |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 95 | static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, |
| 96 | gfp_t gfp_mask) |
Balbir Singh | 8a9f3cc | 2008-02-07 00:13:53 -0800 | [diff] [blame] | 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 | |
Hugh Dickins | 427d541 | 2008-03-04 14:29:03 -0800 | [diff] [blame] | 109 | static inline void mem_cgroup_move_lists(struct page *page, bool active) |
Balbir Singh | 66e1707 | 2008-02-07 00:13:56 -0800 | [diff] [blame] | 110 | { |
| 111 | } |
| 112 | |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 113 | static inline int mem_cgroup_cache_charge(struct page *page, |
Balbir Singh | e1a1cd5 | 2008-02-07 00:14:02 -0800 | [diff] [blame] | 114 | struct mm_struct *mm, |
| 115 | gfp_t gfp_mask) |
Balbir Singh | 8697d33 | 2008-02-07 00:13:59 -0800 | [diff] [blame] | 116 | { |
| 117 | return 0; |
| 118 | } |
| 119 | |
Hugh Dickins | bd845e3 | 2008-03-04 14:29:01 -0800 | [diff] [blame] | 120 | static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
Balbir Singh | bed7161 | 2008-02-07 00:14:01 -0800 | [diff] [blame] | 121 | { |
David Rientjes | 60c12b1 | 2008-02-09 00:10:15 -0800 | [diff] [blame] | 122 | return 1; |
Balbir Singh | bed7161 | 2008-02-07 00:14:01 -0800 | [diff] [blame] | 123 | } |
| 124 | |
David Rientjes | 4c4a221 | 2008-02-07 00:14:06 -0800 | [diff] [blame] | 125 | static inline int task_in_mem_cgroup(struct task_struct *task, |
| 126 | const struct mem_cgroup *mem) |
| 127 | { |
| 128 | return 1; |
| 129 | } |
| 130 | |
KAMEZAWA Hiroyuki | ae41be3 | 2008-02-07 00:14:10 -0800 | [diff] [blame] | 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 | |
KAMEZAWA Hiroyuki | 58ae83d | 2008-02-07 00:14:32 -0800 | [diff] [blame] | 145 | static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
| 146 | { |
| 147 | return 0; |
| 148 | } |
KAMEZAWA Hiroyuki | 5932f36 | 2008-02-07 00:14:33 -0800 | [diff] [blame] | 149 | |
| 150 | static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) |
| 151 | { |
| 152 | return 0; |
| 153 | } |
| 154 | |
KAMEZAWA Hiroyuki | 6c48a1d | 2008-02-07 00:14:34 -0800 | [diff] [blame] | 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 | |
KAMEZAWA Hiroyuki | cc38108 | 2008-02-07 00:14:35 -0800 | [diff] [blame] | 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 | } |
Pavel Emelianov | 78fb746 | 2008-02-07 00:13:51 -0800 | [diff] [blame] | 181 | #endif /* CONFIG_CGROUP_MEM_CONT */ |
| 182 | |
Balbir Singh | 8cdea7c | 2008-02-07 00:13:50 -0800 | [diff] [blame] | 183 | #endif /* _LINUX_MEMCONTROL_H */ |
| 184 | |