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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/init.h>
#include <linux/pm.h>
#include <linux/mm.h>
/* struct pbe is used for creating lists of pages that should be restored
* atomically during the resume from disk, because the page frames they have
* occupied before the suspend are in use.
*/
struct pbe {
void *address; /* address of the copy */
void *orig_address; /* original address of a page */
struct pbe *next;
};
/* 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);
#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
extern int pm_prepare_console(void);
extern void pm_restore_console(void);
#else
static inline int pm_prepare_console(void) { return 0; }
static inline void pm_restore_console(void) {}
#endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
#else
static inline int software_suspend(void)
{
printk("Warning: fake suspend called\n");
return -ENOSYS;
}
#endif /* CONFIG_PM */
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);
/* Page management functions for the software suspend (swsusp) */
static inline void swsusp_set_page_forbidden(struct page *page)
{
SetPageNosave(page);
}
static inline int swsusp_page_is_forbidden(struct page *page)
{
return PageNosave(page);
}
static inline void swsusp_unset_page_forbidden(struct page *page)
{
ClearPageNosave(page);
}
static inline void swsusp_set_page_free(struct page *page)
{
SetPageNosaveFree(page);
}
static inline int swsusp_page_is_free(struct page *page)
{
return PageNosaveFree(page);
}
static inline void swsusp_unset_page_free(struct page *page)
{
ClearPageNosaveFree(page);
}
/*
* 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 1024
#endif /* _LINUX_SWSUSP_H */
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