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#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);
extern unsigned long get_usable_page(gfp_t gfp_mask);
extern void free_eaten_memory(void);
/*
* 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 */
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