kernel/power/power.h

   1 #include <linux/suspend.h>
   2 #include <linux/utsname.h>
   3
   4 struct swsusp_info {
   5         struct new_utsname      uts;
   6         u32                     version_code;
   7         unsigned long           num_physpages;
   8         int                     cpus;
   9         unsigned long           image_pages;
  10         unsigned long           pages;
  11 } __attribute__((aligned(PAGE_SIZE)));
  12
  13
  14
  15 #ifdef CONFIG_SOFTWARE_SUSPEND
  16 extern int pm_suspend_disk(void);
  17
  18 #else
  19 static inline int pm_suspend_disk(void)
  20 {
  21         return -EPERM;
  22 }
  23 #endif
  24 extern struct semaphore pm_sem;
  25 #define power_attr(_name) \
  26 static struct subsys_attribute _name##_attr = { \
  27         .attr   = {                             \
  28                 .name = __stringify(_name),     \
  29                 .mode = 0644,                   \
  30         },                                      \
  31         .show   = _name##_show,                 \
  32         .store  = _name##_store,                \
  33 }
  34
  35 extern struct subsystem power_subsys;
  36
  37 /* References to section boundaries */
  38 extern const void __nosave_begin, __nosave_end;
  39
  40 extern unsigned int nr_copy_pages;
  41 extern struct pbe *pagedir_nosave;
  42
  43 /* Preferred image size in bytes (default 500 MB) */
  44 extern unsigned long image_size;
  45
  46 extern asmlinkage int swsusp_arch_suspend(void);
  47 extern asmlinkage int swsusp_arch_resume(void);
  48
  49 extern unsigned int count_data_pages(void);
  50 extern void free_pagedir(struct pbe *pblist);
  51 extern void release_eaten_pages(void);
  52 extern struct pbe *alloc_pagedir(unsigned nr_pages, gfp_t gfp_mask, int safe_needed);
  53 extern void swsusp_free(void);
  54 extern int alloc_data_pages(struct pbe *pblist, gfp_t gfp_mask, int safe_needed);
  55 extern unsigned int snapshot_nr_pages(void);
  56 extern struct pbe *snapshot_pblist(void);
  57 extern void snapshot_pblist_set(struct pbe *pblist);