| /* memcontrol.h - Memory Controller |
| * |
| * Copyright IBM Corporation, 2007 |
| * Author Balbir Singh <balbir@linux.vnet.ibm.com> |
| * |
| * Copyright 2007 OpenVZ SWsoft Inc |
| * Author: Pavel Emelianov <xemul@openvz.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #ifndef _LINUX_MEMCONTROL_H |
| #define _LINUX_MEMCONTROL_H |
| |
| struct mem_cgroup; |
| struct page_cgroup; |
| struct page; |
| struct mm_struct; |
| |
| #ifdef CONFIG_CGROUP_MEM_RES_CTLR |
| |
| extern int mem_cgroup_newpage_charge(struct page *page, struct mm_struct *mm, |
| gfp_t gfp_mask); |
| /* for swap handling */ |
| extern int mem_cgroup_try_charge(struct mm_struct *mm, |
| gfp_t gfp_mask, struct mem_cgroup **ptr); |
| extern int mem_cgroup_try_charge_swapin(struct mm_struct *mm, |
| struct page *page, gfp_t mask, struct mem_cgroup **ptr); |
| extern void mem_cgroup_commit_charge_swapin(struct page *page, |
| struct mem_cgroup *ptr); |
| extern void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr); |
| |
| extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, |
| gfp_t gfp_mask); |
| extern void mem_cgroup_add_lru_list(struct page *page, enum lru_list lru); |
| extern void mem_cgroup_del_lru_list(struct page *page, enum lru_list lru); |
| extern void mem_cgroup_rotate_lru_list(struct page *page, enum lru_list lru); |
| extern void mem_cgroup_del_lru(struct page *page); |
| extern void mem_cgroup_move_lists(struct page *page, |
| enum lru_list from, enum lru_list to); |
| extern void mem_cgroup_uncharge_page(struct page *page); |
| extern void mem_cgroup_uncharge_cache_page(struct page *page); |
| extern int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask); |
| |
| extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan, |
| struct list_head *dst, |
| unsigned long *scanned, int order, |
| int mode, struct zone *z, |
| struct mem_cgroup *mem_cont, |
| int active, int file); |
| extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); |
| int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); |
| |
| extern struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p); |
| |
| #define mm_match_cgroup(mm, cgroup) \ |
| ((cgroup) == mem_cgroup_from_task((mm)->owner)) |
| |
| extern int |
| mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr); |
| extern void mem_cgroup_end_migration(struct mem_cgroup *mem, |
| struct page *oldpage, struct page *newpage); |
| |
| /* |
| * For memory reclaim. |
| */ |
| extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem); |
| extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem); |
| |
| extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem); |
| extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, |
| int priority); |
| extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, |
| int priority); |
| |
| extern long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, struct zone *zone, |
| int priority, enum lru_list lru); |
| |
| #ifdef CONFIG_CGROUP_MEM_RES_CTLR_SWAP |
| extern int do_swap_account; |
| #endif |
| #else /* CONFIG_CGROUP_MEM_RES_CTLR */ |
| struct mem_cgroup; |
| |
| static inline int mem_cgroup_newpage_charge(struct page *page, |
| struct mm_struct *mm, gfp_t gfp_mask) |
| { |
| return 0; |
| } |
| |
| static inline int mem_cgroup_cache_charge(struct page *page, |
| struct mm_struct *mm, gfp_t gfp_mask) |
| { |
| return 0; |
| } |
| |
| static inline int mem_cgroup_try_charge(struct mm_struct *mm, |
| gfp_t gfp_mask, struct mem_cgroup **ptr) |
| { |
| return 0; |
| } |
| |
| static inline int mem_cgroup_try_charge_swapin(struct mm_struct *mm, |
| struct page *page, gfp_t gfp_mask, struct mem_cgroup **ptr) |
| { |
| return 0; |
| } |
| |
| static inline void mem_cgroup_commit_charge_swapin(struct page *page, |
| struct mem_cgroup *ptr) |
| { |
| } |
| |
| static inline void mem_cgroup_cancel_charge_swapin(struct mem_cgroup *ptr) |
| { |
| } |
| |
| static inline void mem_cgroup_uncharge_page(struct page *page) |
| { |
| } |
| |
| static inline void mem_cgroup_uncharge_cache_page(struct page *page) |
| { |
| } |
| |
| static inline int mem_cgroup_shrink_usage(struct mm_struct *mm, gfp_t gfp_mask) |
| { |
| return 0; |
| } |
| |
| static inline void mem_cgroup_add_lru_list(struct page *page, int lru) |
| { |
| } |
| |
| static inline void mem_cgroup_del_lru_list(struct page *page, int lru) |
| { |
| return ; |
| } |
| |
| static inline void mem_cgroup_rotate_lru_list(struct page *page, int lru) |
| { |
| return ; |
| } |
| |
| static inline void mem_cgroup_del_lru(struct page *page) |
| { |
| return ; |
| } |
| |
| static inline void |
| mem_cgroup_move_lists(struct page *page, enum lru_list from, enum lru_list to) |
| { |
| } |
| |
| static inline int mm_match_cgroup(struct mm_struct *mm, struct mem_cgroup *mem) |
| { |
| return 1; |
| } |
| |
| static inline int task_in_mem_cgroup(struct task_struct *task, |
| const struct mem_cgroup *mem) |
| { |
| return 1; |
| } |
| |
| static inline int |
| mem_cgroup_prepare_migration(struct page *page, struct mem_cgroup **ptr) |
| { |
| return 0; |
| } |
| |
| static inline void mem_cgroup_end_migration(struct mem_cgroup *mem, |
| struct page *oldpage, |
| struct page *newpage) |
| { |
| } |
| |
| static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem) |
| { |
| return 0; |
| } |
| |
| static inline int mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem) |
| { |
| return 0; |
| } |
| |
| static inline int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem) |
| { |
| return 0; |
| } |
| |
| static inline void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem, |
| int priority) |
| { |
| } |
| |
| static inline void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem, |
| int priority) |
| { |
| } |
| |
| static inline long mem_cgroup_calc_reclaim(struct mem_cgroup *mem, |
| struct zone *zone, int priority, |
| enum lru_list lru) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_CGROUP_MEM_CONT */ |
| |
| #endif /* _LINUX_MEMCONTROL_H */ |
| |