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Diffstat (limited to 'include/linux/memcontrol.h')
| -rw-r--r-- | include/linux/memcontrol.h | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h new file mode 100644 index 00000000000..9815951ec99 --- /dev/null +++ b/include/linux/memcontrol.h @@ -0,0 +1,190 @@ +/* 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 + +#include <linux/rcupdate.h> +#include <linux/mm.h> + +struct mem_cgroup; +struct page_cgroup; +struct page; +struct mm_struct; + +#ifdef CONFIG_CGROUP_MEM_CONT + +extern void mm_init_cgroup(struct mm_struct *mm, struct task_struct *p); +extern void mm_free_cgroup(struct mm_struct *mm); +extern void page_assign_page_cgroup(struct page *page, + struct page_cgroup *pc); +extern struct page_cgroup *page_get_page_cgroup(struct page *page); +extern int mem_cgroup_charge(struct page *page, struct mm_struct *mm, + gfp_t gfp_mask); +extern void mem_cgroup_uncharge(struct page_cgroup *pc); +extern void mem_cgroup_uncharge_page(struct page *page); +extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active); +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); +extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask); +extern int mem_cgroup_cache_charge(struct page *page, struct mm_struct *mm, + gfp_t gfp_mask); +int task_in_mem_cgroup(struct task_struct *task, const struct mem_cgroup *mem); + +static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) +{ + return rcu_dereference(mm->mem_cgroup); +} + +extern int mem_cgroup_prepare_migration(struct page *page); +extern void mem_cgroup_end_migration(struct page *page); +extern void mem_cgroup_page_migration(struct page *page, 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_active(struct mem_cgroup *mem, + struct zone *zone, int priority); +extern long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, + struct zone *zone, int priority); + +#else /* CONFIG_CGROUP_MEM_CONT */ +static inline void mm_init_cgroup(struct mm_struct *mm, + struct task_struct *p) +{ +} + +static inline void mm_free_cgroup(struct mm_struct *mm) +{ +} + +static inline void page_assign_page_cgroup(struct page *page, + struct page_cgroup *pc) +{ +} + +static inline struct page_cgroup *page_get_page_cgroup(struct page *page) +{ + return NULL; +} + +static inline int mem_cgroup_charge(struct page *page, struct mm_struct *mm, + gfp_t gfp_mask) +{ + return 0; +} + +static inline void mem_cgroup_uncharge(struct page_cgroup *pc) +{ +} + +static inline void mem_cgroup_uncharge_page(struct page *page) +{ +} + +static inline void mem_cgroup_move_lists(struct page_cgroup *pc, + bool active) +{ +} + +static inline int mem_cgroup_cache_charge(struct page *page, + struct mm_struct *mm, + gfp_t gfp_mask) +{ + return 0; +} + +static inline struct mem_cgroup *mm_cgroup(const struct mm_struct *mm) +{ + return NULL; +} + +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) +{ + return 0; +} + +static inline void mem_cgroup_end_migration(struct page *page) +{ +} + +static inline void +mem_cgroup_page_migration(struct page *page, 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_active(struct mem_cgroup *mem, + struct zone *zone, int priority) +{ + return 0; +} + +static inline long mem_cgroup_calc_reclaim_inactive(struct mem_cgroup *mem, + struct zone *zone, int priority) +{ + return 0; +} +#endif /* CONFIG_CGROUP_MEM_CONT */ + +#endif /* _LINUX_MEMCONTROL_H */ + |