1 #ifndef _LINUX_SWSUSP_H
2 #define _LINUX_SWSUSP_H
4 #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
5 #include <asm/suspend.h>
7 #include <linux/swap.h>
8 #include <linux/notifier.h>
9 #include <linux/init.h>
13 /* struct pbe is used for creating lists of pages that should be restored
14 * atomically during the resume from disk, because the page frames they have
15 * occupied before the suspend are in use.
18 void *address
; /* address of the copy */
19 void *orig_address
; /* original address of a page */
24 extern void drain_local_pages(void);
25 extern void mark_free_pages(struct zone
*zone
);
27 #if defined(CONFIG_PM) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
28 extern int pm_prepare_console(void);
29 extern void pm_restore_console(void);
31 static inline int pm_prepare_console(void) { return 0; }
32 static inline void pm_restore_console(void) {}
35 #if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
36 /* kernel/power/swsusp.c */
37 extern int software_suspend(void);
38 /* kernel/power/snapshot.c */
39 extern void __init
register_nosave_region(unsigned long, unsigned long);
40 extern int swsusp_page_is_forbidden(struct page
*);
41 extern void swsusp_set_page_free(struct page
*);
42 extern void swsusp_unset_page_free(struct page
*);
43 extern unsigned long get_safe_page(gfp_t gfp_mask
);
45 static inline int software_suspend(void)
47 printk("Warning: fake suspend called\n");
51 static inline void register_nosave_region(unsigned long b
, unsigned long e
) {}
52 static inline int swsusp_page_is_forbidden(struct page
*p
) { return 0; }
53 static inline void swsusp_set_page_free(struct page
*p
) {}
54 static inline void swsusp_unset_page_free(struct page
*p
) {}
55 #endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
57 void save_processor_state(void);
58 void restore_processor_state(void);
60 void __save_processor_state(struct saved_context
*ctxt
);
61 void __restore_processor_state(struct saved_context
*ctxt
);
64 * XXX: We try to keep some more pages free so that I/O operations succeed
65 * without paging. Might this be more?
67 #define PAGES_FOR_IO 1024
69 #endif /* _LINUX_SWSUSP_H */
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