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#ifndef _LINUX_SWSUSP_H
#define _LINUX_SWSUSP_H
#ifdef CONFIG_X86
#include <asm/suspend.h>
#endif
#include <linux/swap.h>
#include <linux/notifier.h>
#include <linux/config.h>
#include <linux/init.h>
extern unsigned char software_suspend_enabled;
#define NORESUME 1
#define RESUME_SPECIFIED 2
#ifdef CONFIG_SOFTWARE_SUSPEND
/* 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;
swp_entry_t dummy; /* we need scratch space at
* end of page (see link, diskpage)
*/
} suspend_pagedir_t;
#define SWAP_FILENAME_MAXLENGTH 32
struct suspend_header {
__u32 version_code;
unsigned long num_physpages;
char machine[8];
char version[20];
int num_cpus;
int page_size;
suspend_pagedir_t *suspend_pagedir;
unsigned int num_pbes;
struct swap_location {
char filename[SWAP_FILENAME_MAXLENGTH];
} swap_location[MAX_SWAPFILES];
};
#define SUSPEND_PD_PAGES(x) (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
/* mm/vmscan.c */
extern int shrink_mem(void);
/* mm/page_alloc.c */
extern void drain_local_pages(void);
/* kernel/suspend.c */
extern void software_suspend(void);
extern void software_resume(void);
extern int register_suspend_notifier(struct notifier_block *);
extern int unregister_suspend_notifier(struct notifier_block *);
extern void refrigerator(unsigned long);
extern int freeze_processes(void);
extern void thaw_processes(void);
extern unsigned int nr_copy_pages __nosavedata;
extern suspend_pagedir_t *pagedir_nosave __nosavedata;
/* Communication between kernel/suspend.c and arch/i386/suspend.c */
extern void do_magic_resume_1(void);
extern void do_magic_resume_2(void);
extern void do_magic_suspend_1(void);
extern void do_magic_suspend_2(void);
/* Communication between acpi and arch/i386/suspend.c */
extern void do_suspend_lowlevel(int resume);
extern void do_suspend_lowlevel_s4bios(int resume);
#else
static inline void software_suspend(void)
{
}
#define software_resume() do { } while(0)
#define register_suspend_notifier(a) do { } while(0)
#define unregister_suspend_notifier(a) do { } while(0)
#define refrigerator(a) do { BUG(); } while(0)
#define freeze_processes() do { panic("You need CONFIG_SOFTWARE_SUSPEND to do sleeps."); } while(0)
#define thaw_processes() do { } while(0)
#endif
#endif /* _LINUX_SWSUSP_H */
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