include/linux/suspend.h

   1 #ifndef _LINUX_SWSUSP_H
   2 #define _LINUX_SWSUSP_H
   3
   4 #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) || defined(CONFIG_PPC64)
   5 #include <asm/suspend.h>
   6 #endif
   7 #include <linux/swap.h>
   8 #include <linux/notifier.h>
   9 #include <linux/init.h>
  10 #include <linux/pm.h>
  11 #include <linux/mm.h>
  12
  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.
  16  */
  17 struct pbe {
  18         void *address;          /* address of the copy */
  19         void *orig_address;     /* original address of a page */
  20         struct pbe *next;
  21 };
  22
  23 /* mm/page_alloc.c */
  24 extern void drain_local_pages(void);
  25 extern void mark_free_pages(struct zone *zone);
  26
  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);
  30 #else
  31 static inline int pm_prepare_console(void) { return 0; }
  32 static inline void pm_restore_console(void) {}
  33 #endif
  34
  35 #if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
  36 /* kernel/power/snapshot.c */
  37 extern void __init register_nosave_region(unsigned long, unsigned long);
  38 extern int swsusp_page_is_forbidden(struct page *);
  39 extern void swsusp_set_page_free(struct page *);
  40 extern void swsusp_unset_page_free(struct page *);
  41 extern unsigned long get_safe_page(gfp_t gfp_mask);
  42 #else
  43 static inline void register_nosave_region(unsigned long b, unsigned long e) {}
  44 static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
  45 static inline void swsusp_set_page_free(struct page *p) {}
  46 static inline void swsusp_unset_page_free(struct page *p) {}
  47 #endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
  48
  49 void save_processor_state(void);
  50 void restore_processor_state(void);
  51 struct saved_context;
  52 void __save_processor_state(struct saved_context *ctxt);
  53 void __restore_processor_state(struct saved_context *ctxt);
  54
  55 #endif /* _LINUX_SWSUSP_H */