suspend.h 1.4 KB
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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>

/* page backup entry */
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struct pbe {
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	unsigned long address;		/* address of the copy */
	unsigned long orig_address;	/* original address of page */
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	struct pbe *next;
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};
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/* 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);
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#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) */
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#else
static inline int software_suspend(void)
{
	printk("Warning: fake suspend called\n");
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	return -ENOSYS;
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}
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#endif /* CONFIG_PM */
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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);
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unsigned long get_safe_page(gfp_t gfp_mask);
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/*
 * XXX: We try to keep some more pages free so that I/O operations succeed
 * without paging. Might this be more?
 */
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#define PAGES_FOR_IO	1024
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#endif /* _LINUX_SWSUSP_H */