1 #ifndef _LINUX_SWSUSP_H
2 #define _LINUX_SWSUSP_H
4 #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) || defined(CONFIG_PPC64)
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/snapshot.c */
37 extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
38 static inline void register_nosave_region(unsigned long b, unsigned long e)
40 __register_nosave_region(b, e, 0);
42 static inline void register_nosave_region_late(unsigned long b, unsigned long e)
44 __register_nosave_region(b, e, 1);
46 extern int swsusp_page_is_forbidden(struct page *);
47 extern void swsusp_set_page_free(struct page *);
48 extern void swsusp_unset_page_free(struct page *);
49 extern unsigned long get_safe_page(gfp_t gfp_mask);
51 static inline void register_nosave_region(unsigned long b, unsigned long e) {}
52 static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
53 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
54 static inline void swsusp_set_page_free(struct page *p) {}
55 static inline void swsusp_unset_page_free(struct page *p) {}
56 #endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
58 void save_processor_state(void);
59 void restore_processor_state(void);
61 void __save_processor_state(struct saved_context *ctxt);
62 void __restore_processor_state(struct saved_context *ctxt);
64 #endif /* _LINUX_SWSUSP_H */