/* 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_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask); extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, gfp_t gfp_mask); extern void mem_cgroup_move_lists(struct page *page, enum lru_list lru); 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 page *newpage); extern void mem_cgroup_end_migration(struct page *page); /* * 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); #else /* CONFIG_CGROUP_MEM_RES_CTLR */ static inline int mem_cgroup_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 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_move_lists(struct page *page, bool active) { } 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 page *newpage) { return 0; } static inline void mem_cgroup_end_migration(struct page *page) { } 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 */