1 /* memcontrol.h - Memory Controller
3 * Copyright IBM Corporation, 2007
4 * Author Balbir Singh <balbir@linux.vnet.ibm.com>
6 * Copyright 2007 OpenVZ SWsoft Inc
7 * Author: Pavel Emelianov <xemul@openvz.org>
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.
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.
20 #ifndef _LINUX_MEMCONTROL_H
21 #define _LINUX_MEMCONTROL_H
22 #include <linux/cgroup.h>
28 #ifdef CONFIG_CGROUP_MEM_RES_CTLR
30 extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm,
32 /* for swap handling */
33 extern int mem_cgroup_try_charge(struct mm_struct *mm,
34 gfp_t gfp_mask, struct mem_cgroup **ptr);
35 extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
36 struct page *page, gfp_t mask, struct mem_cgroup **ptr);
37 extern void mem_cgroup_commit_charge_swapin(struct page *page,
38 struct mem_cgroup *ptr);
39 extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr);
41 extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm,
43 extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru);
44 extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru);
45 extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru);
46 extern void mem_cgroup_del_lru(struct page *page);
47 extern void mem_cgroup_move_lists(struct page *page,
48 enum lru_list from, enum lru_list to);
49 extern void mem_cgroup_uncharge_page(struct page *page);
50 extern void mem_cgroup_uncharge_cache_page(struct page *page);
51 extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask);
53 extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
54 struct list_head *dst,
55 unsigned long *scanned, int order,
56 int mode, struct zone *z,
57 struct mem_cgroup *mem_cont,
58 int active, int file);
59 extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
60 int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem);
62 extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
64 #define mm_match_cgroup(mm, cgroup) \
65 ((cgroup) == mem_cgroup_from_task((mm)->owner))
68 mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr);
69 extern void mem_cgroup_end_migration(struct mem_cgroup *mem,
70 struct page *oldpage, struct page *newpage);
75 extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);
76 extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
78 extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
79 extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
81 extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
84 extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone,
85 int priority, enum lru_list lru);
87 #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP
88 extern int do_swap_account;
91 static inline bool mem_cgroup_disabled(void)
93 if (mem_cgroup_subsys.disabled)
98 #else /* CONFIG_CGROUP_MEM_RES_CTLR */
101 static inline int mem_cgroup_newpage_charge(struct page *page,
102 struct mm_struct *mm, gfp_t gfp_mask)
107 static inline int mem_cgroup_cache_charge(struct page *page,
108 struct mm_struct *mm, gfp_t gfp_mask)
113 static inline int mem_cgroup_try_charge(struct mm_struct *mm,
114 gfp_t gfp_mask, struct mem_cgroup **ptr)
119 static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm,
120 struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr)
125 static inline void mem_cgroup_commit_charge_swapin(struct page *page,
126 struct mem_cgroup *ptr)
130 static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr)
134 static inline void mem_cgroup_uncharge_page(struct page *page)
138 static inline void mem_cgroup_uncharge_cache_page(struct page *page)
142 static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask)
147 static inline void mem_cgroup_add_lru_list(struct page *page, int lru)
151 static inline void mem_cgroup_del_lru_list(struct page *page, int lru)
156 static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru)
161 static inline void mem_cgroup_del_lru(struct page *page)
167 mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to)
171 static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem)
176 static inline int task_in_mem_cgroup(struct task_struct *task,
177 const struct mem_cgroup *mem)
183 mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr)
188 static inline void mem_cgroup_end_migration(struct mem_cgroup *mem,
189 struct page *oldpage,
190 struct page *newpage)
194 static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
199 static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem)
204 static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem)
209 static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
214 static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
219 static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem,
220 struct zone *zone, int priority,
226 static inline bool mem_cgroup_disabled(void)
230 #endif /* CONFIG_CGROUP_MEM_CONT */
232 #endif /* _LINUX_MEMCONTROL_H */