[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / suspend.h

#ifndef _LINUX_SWSUSP_H
#define _LINUX_SWSUSP_H

#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
#include <asm/suspend.h>
#endif
#include <linux/swap.h>
#include <linux/notifier.h>
#include <linux/config.h>
#include <linux/init.h>
#include <linux/pm.h>

/* page backup entry */
typedef struct pbe {
	unsigned long address;		/* address of the copy */
	unsigned long orig_address;	/* original address of page */
	swp_entry_t swap_address;	

	struct pbe *next;	/* also used as scratch space at
				 * end of page (see link, diskpage)
				 */
} suspend_pagedir_t;

#define for_each_pbe(pbe, pblist) \
	for (pbe = pblist ; pbe ; pbe = pbe->next)

#define PBES_PER_PAGE      (PAGE_SIZE/sizeof(struct pbe))
#define PB_PAGE_SKIP       (PBES_PER_PAGE-1)

#define for_each_pb_page(pbe, pblist) \
	for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)


#define SWAP_FILENAME_MAXLENGTH	32


extern dev_t swsusp_resume_device;
   
/* mm/vmscan.c */
extern int shrink_mem(void);

/* mm/page_alloc.c */
extern void drain_local_pages(void);
extern void mark_free_pages(struct zone *zone);

#ifdef CONFIG_PM
/* kernel/power/swsusp.c */
extern int software_suspend(void);

extern int pm_prepare_console(void);
extern void pm_restore_console(void);

#else
static inline int software_suspend(void)
{
	printk("Warning: fake suspend called\n");
	return -EPERM;
}
#endif

#ifdef CONFIG_SUSPEND_SMP
extern void disable_nonboot_cpus(void);
extern void enable_nonboot_cpus(void);
#else
static inline void disable_nonboot_cpus(void) {}
static inline void enable_nonboot_cpus(void) {}
#endif

void save_processor_state(void);
void restore_processor_state(void);
struct saved_context;
void __save_processor_state(struct saved_context *ctxt);
void __restore_processor_state(struct saved_context *ctxt);
unsigned long get_safe_page(gfp_t gfp_mask);

/*
 * XXX: We try to keep some more pages free so that I/O operations succeed
 * without paging. Might this be more?
 */
#define PAGES_FOR_IO	512

#endif /* _LINUX_SWSUSP_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef _LINUX_SWSUSP_H
	2	#define _LINUX_SWSUSP_H
	3
	4	#if defined(CONFIG_X86) \|\| defined(CONFIG_FRV) \|\| defined(CONFIG_PPC32)
	5	#include <asm/suspend.h>
	6	#endif
	7	#include <linux/swap.h>
	8	#include <linux/notifier.h>
	9	#include <linux/config.h>
	10	#include <linux/init.h>
	11	#include <linux/pm.h>
	12
	13	/* page backup entry */
	14	typedef struct pbe {
	15	unsigned long address; /* address of the copy */
	16	unsigned long orig_address; /* original address of page */
	17	swp_entry_t swap_address;
	18
	19	struct pbe next; / also used as scratch space at
	20	* end of page (see link, diskpage)
	21	*/
	22	} suspend_pagedir_t;
	23
	24	#define for_each_pbe(pbe, pblist) \
	25	for (pbe = pblist ; pbe ; pbe = pbe->next)
	26
	27	#define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe))
	28	#define PB_PAGE_SKIP (PBES_PER_PAGE-1)
	29
	30	#define for_each_pb_page(pbe, pblist) \
	31	for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)
	32
	33
	34	#define SWAP_FILENAME_MAXLENGTH 32
	35
	36
	37	extern dev_t swsusp_resume_device;
	38
	39	/* mm/vmscan.c */
	40	extern int shrink_mem(void);
	41
	42	/* mm/page_alloc.c */
	43	extern void drain_local_pages(void);
	44	extern void mark_free_pages(struct zone *zone);
	45
	46	#ifdef CONFIG_PM
	47	/* kernel/power/swsusp.c */
	48	extern int software_suspend(void);
	49
	50	extern int pm_prepare_console(void);
	51	extern void pm_restore_console(void);
	52
	53	#else
	54	static inline int software_suspend(void)
	55	{
	56	printk("Warning: fake suspend called\n");
	57	return -EPERM;
	58	}
	59	#endif
	60
5a72e04d	61	#ifdef CONFIG_SUSPEND_SMP
1da177e4 LT	62	extern void disable_nonboot_cpus(void);
	63	extern void enable_nonboot_cpus(void);
	64	#else
	65	static inline void disable_nonboot_cpus(void) {}
	66	static inline void enable_nonboot_cpus(void) {}
	67	#endif
	68
	69	void save_processor_state(void);
	70	void restore_processor_state(void);
	71	struct saved_context;
	72	void __save_processor_state(struct saved_context *ctxt);
	73	void __restore_processor_state(struct saved_context *ctxt);
2c1b4a5c	74	unsigned long get_safe_page(gfp_t gfp_mask);
1da177e4	75
25761b6e RW	76	/*
	77	* XXX: We try to keep some more pages free so that I/O operations succeed
	78	* without paging. Might this be more?
	79	*/
	80	#define PAGES_FOR_IO 512
	81
1da177e4	82	#endif /* _LINUX_SWSUSP_H */