[net-next-2.6.git] / include / linux / memcontrol.h

/* 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_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);
extern void mem_cgroup_uncharge(struct page_cgroup *pc);
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);

static inline void mem_cgroup_uncharge_page(struct page *page)
{
	mem_cgroup_uncharge(page_get_page_cgroup(page));
}

#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)
{
	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)
{
	return 0;
}

#endif /* CONFIG_CGROUP_MEM_CONT */

#endif /* _LINUX_MEMCONTROL_H */
Commit	Line	Data
8cdea7c0 BS	1	/* memcontrol.h - Memory Controller
	2	*
	3	* Copyright IBM Corporation, 2007
	4	* Author Balbir Singh <balbir@linux.vnet.ibm.com>
	5	*
78fb7466 PE	6	* Copyright 2007 OpenVZ SWsoft Inc
	7	* Author: Pavel Emelianov <xemul@openvz.org>
	8	*
8cdea7c0 BS	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.
	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
78fb7466 PE	23	struct mem_cgroup;
78fb7466 PE	24	struct page_cgroup;
8697d331 BS	25	struct page;
8697d331 BS	26	struct mm_struct;
78fb7466 PE	27
	28	#ifdef CONFIG_CGROUP_MEM_CONT
	29
	30	extern void mm_init_cgroup(struct mm_struct mm, struct task_struct p);
	31	extern void mm_free_cgroup(struct mm_struct *mm);
	32	extern void page_assign_page_cgroup(struct page *page,
	33	struct page_cgroup *pc);
	34	extern struct page_cgroup page_get_page_cgroup(struct page page);
8a9f3ccd BS	35	extern int mem_cgroup_charge(struct page page, struct mm_struct mm);
8a9f3ccd BS	36	extern void mem_cgroup_uncharge(struct page_cgroup *pc);
66e1707b BS	37	extern void mem_cgroup_move_lists(struct page_cgroup *pc, bool active);
	38	extern unsigned long mem_cgroup_isolate_pages(unsigned long nr_to_scan,
	39	struct list_head *dst,
	40	unsigned long *scanned, int order,
	41	int mode, struct zone *z,
	42	struct mem_cgroup *mem_cont,
	43	int active);
c7ba5c9e	44	extern void mem_cgroup_out_of_memory(struct mem_cgroup *mem, gfp_t gfp_mask);
8697d331	45	extern int mem_cgroup_cache_charge(struct page page, struct mm_struct mm);
8a9f3ccd BS	46
	47	static inline void mem_cgroup_uncharge_page(struct page *page)
	48	{
	49	mem_cgroup_uncharge(page_get_page_cgroup(page));
	50	}
78fb7466 PE	51
	52	#else /* CONFIG_CGROUP_MEM_CONT */
	53	static inline void mm_init_cgroup(struct mm_struct *mm,
	54	struct task_struct *p)
	55	{
	56	}
	57
	58	static inline void mm_free_cgroup(struct mm_struct *mm)
	59	{
	60	}
	61
	62	static inline void page_assign_page_cgroup(struct page *page,
	63	struct page_cgroup *pc)
	64	{
	65	}
	66
	67	static inline struct page_cgroup page_get_page_cgroup(struct page page)
	68	{
	69	return NULL;
	70	}
	71
8a9f3ccd BS	72	static inline int mem_cgroup_charge(struct page page, struct mm_struct mm)
	73	{
	74	return 0;
	75	}
	76
	77	static inline void mem_cgroup_uncharge(struct page_cgroup *pc)
	78	{
	79	}
	80
	81	static inline void mem_cgroup_uncharge_page(struct page *page)
	82	{
	83	}
	84
66e1707b BS	85	static inline void mem_cgroup_move_lists(struct page_cgroup *pc,
	86	bool active)
	87	{
	88	}
	89
8697d331 BS	90	static inline int mem_cgroup_cache_charge(struct page *page,
	91	struct mm_struct *mm)
	92	{
	93	return 0;
	94	}
	95
78fb7466 PE	96	#endif /* CONFIG_CGROUP_MEM_CONT */
78fb7466 PE	97
8cdea7c0 BS	98	#endif /* _LINUX_MEMCONTROL_H */
8cdea7c0 BS	99