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Balbir Singh8cdea7c2008-02-07 00:13:50 -08001/* memcontrol.h - Memory Controller
2 *
3 * Copyright IBM Corporation, 2007
4 * Author Balbir Singh <balbir@linux.vnet.ibm.com>
5 *
Pavel Emelianov78fb7462008-02-07 00:13:51 -08006 * Copyright 2007 OpenVZ SWsoft Inc
7 * Author: Pavel Emelianov <xemul@openvz.org>
8 *
Balbir Singh8cdea7c2008-02-07 00:13:50 -08009 * 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 Emelianov78fb7462008-02-07 00:13:51 -080023struct mem_cgroup;
24struct page_cgroup;
Balbir Singh8697d332008-02-07 00:13:59 -080025struct page;
26struct mm_struct;
Pavel Emelianov78fb7462008-02-07 00:13:51 -080027
Balbir Singh00f0b822008-03-04 14:28:39 -080028#ifdef CONFIG_CGROUP_MEM_RES_CTLR
Pavel Emelianov78fb7462008-02-07 00:13:51 -080029
30extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p);
31extern void mm_free_cgroup(struct mm_struct *mm);
32extern void page_assign_page_cgroup(struct page *page,
33 struct page_cgroup *pc);
34extern struct page_cgroup *page_get_page_cgroup(struct page *page);
Balbir Singhe1a1cd52008-02-07 00:14:02 -080035extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
36 gfp_t gfp_mask);
Balbir Singh8a9f3cc2008-02-07 00:13:53 -080037extern void mem_cgroup_uncharge(struct page_cgroup *pc);
Balbir Singh3c541e12008-02-07 00:14:41 -080038extern void mem_cgroup_uncharge_page(struct page *page);
Balbir Singh66e17072008-02-07 00:13:56 -080039extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active);
40extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
41 struct list_head *dst,
42 unsigned long *scanned, int order,
43 int mode, struct zone *z,
44 struct mem_cgroup *mem_cont,
45 int active);
Pavel Emelianovc7ba5c92008-02-07 00:13:58 -080046extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
Balbir Singhe1a1cd52008-02-07 00:14:02 -080047extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
48 gfp_t gfp_mask);
David Rientjes4c4a2212008-02-07 00:14:06 -080049int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
David Rientjes3062fc62008-02-07 00:14:03 -080050
Hugh Dickinsbd845e32008-03-04 14:29:01 -080051#define mm_match_cgroup(mm, cgroup) \
David Rientjes60c12b12008-02-09 00:10:15 -080052 ((cgroup) == rcu_dereference((mm)->mem_cgroup))
Balbir Singh8a9f3cc2008-02-07 00:13:53 -080053
KAMEZAWA Hiroyukiae41be32008-02-07 00:14:10 -080054extern int mem_cgroup_prepare_migration(struct page *page);
55extern void mem_cgroup_end_migration(struct page *page);
56extern void mem_cgroup_page_migration(struct page *page, struct page *newpage);
57
KAMEZAWA Hiroyuki58ae83d2008-02-07 00:14:32 -080058/*
59 * For memory reclaim.
60 */
61extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
KAMEZAWA Hiroyuki5932f362008-02-07 00:14:33 -080062extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
63
KAMEZAWA Hiroyuki6c48a1d2008-02-07 00:14:34 -080064extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
65extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
66 int priority);
67extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
68 int priority);
KAMEZAWA Hiroyuki58ae83d2008-02-07 00:14:32 -080069
KAMEZAWA Hiroyukicc381082008-02-07 00:14:35 -080070extern long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
71 struct zone *zone, int priority);
72extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
73 struct zone *zone, int priority);
KAMEZAWA Hiroyuki58ae83d2008-02-07 00:14:32 -080074
Balbir Singh00f0b822008-03-04 14:28:39 -080075#else /* CONFIG_CGROUP_MEM_RES_CTLR */
Pavel Emelianov78fb7462008-02-07 00:13:51 -080076static inline void mm_init_cgroup(struct mm_struct *mm,
77 struct task_struct *p)
78{
79}
80
81static inline void mm_free_cgroup(struct mm_struct *mm)
82{
83}
84
85static inline void page_assign_page_cgroup(struct page *page,
86 struct page_cgroup *pc)
87{
88}
89
90static inline struct page_cgroup *page_get_page_cgroup(struct page *page)
91{
92 return NULL;
93}
94
Balbir Singhe1a1cd52008-02-07 00:14:02 -080095static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm,
96 gfp_t gfp_mask)
Balbir Singh8a9f3cc2008-02-07 00:13:53 -080097{
98 return 0;
99}
100
101static inline void mem_cgroup_uncharge(struct page_cgroup *pc)
102{
103}
104
105static inline void mem_cgroup_uncharge_page(struct page *page)
106{
107}
108
Balbir Singh66e17072008-02-07 00:13:56 -0800109static inline void mem_cgroup_move_lists(struct page_cgroup *pc,
110 bool active)
111{
112}
113
Balbir Singh8697d332008-02-07 00:13:59 -0800114static inline int mem_cgroup_cache_charge(struct page *page,
Balbir Singhe1a1cd52008-02-07 00:14:02 -0800115 struct mm_struct *mm,
116 gfp_t gfp_mask)
Balbir Singh8697d332008-02-07 00:13:59 -0800117{
118 return 0;
119}
120
Hugh Dickinsbd845e32008-03-04 14:29:01 -0800121static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
Balbir Singhbed71612008-02-07 00:14:01 -0800122{
David Rientjes60c12b12008-02-09 00:10:15 -0800123 return 1;
Balbir Singhbed71612008-02-07 00:14:01 -0800124}
125
David Rientjes4c4a2212008-02-07 00:14:06 -0800126static inline int task_in_mem_cgroup(struct task_struct *task,
127 const struct mem_cgroup *mem)
128{
129 return 1;
130}
131
KAMEZAWA Hiroyukiae41be32008-02-07 00:14:10 -0800132static inline int mem_cgroup_prepare_migration(struct page *page)
133{
134 return 0;
135}
136
137static inline void mem_cgroup_end_migration(struct page *page)
138{
139}
140
141static inline void
142mem_cgroup_page_migration(struct page *page, struct page *newpage)
143{
144}
145
KAMEZAWA Hiroyuki58ae83d2008-02-07 00:14:32 -0800146static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
147{
148 return 0;
149}
KAMEZAWA Hiroyuki5932f362008-02-07 00:14:33 -0800150
151static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
152{
153 return 0;
154}
155
KAMEZAWA Hiroyuki6c48a1d2008-02-07 00:14:34 -0800156static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
157{
158 return 0;
159}
160
161static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
162 int priority)
163{
164}
165
166static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
167 int priority)
168{
169}
170
KAMEZAWA Hiroyukicc381082008-02-07 00:14:35 -0800171static inline long mem_cgroup_calc_reclaim_active(struct mem_cgroup *mem,
172 struct zone *zone, int priority)
173{
174 return 0;
175}
176
177static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem,
178 struct zone *zone, int priority)
179{
180 return 0;
181}
Pavel Emelianov78fb7462008-02-07 00:13:51 -0800182#endif /* CONFIG_CGROUP_MEM_CONT */
183
Balbir Singh8cdea7c2008-02-07 00:13:50 -0800184#endif /* _LINUX_MEMCONTROL_H */
185