power.h 1.2 KB

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  1. #include <linux/suspend.h>
  2. #include <linux/utsname.h>
  3. /* With SUSPEND_CONSOLE defined, it suspend looks *really* cool, but
  4. we probably do not take enough locks for switching consoles, etc,
  5. so bad things might happen.
  6. */
  7. #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
  8. #define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
  9. #endif
  10. struct swsusp_info {
  11. struct new_utsname uts;
  12. u32 version_code;
  13. unsigned long num_physpages;
  14. int cpus;
  15. unsigned long image_pages;
  16. unsigned long pagedir_pages;
  17. suspend_pagedir_t * suspend_pagedir;
  18. swp_entry_t pagedir[768];
  19. } __attribute__((aligned(PAGE_SIZE)));
  20. #ifdef CONFIG_SOFTWARE_SUSPEND
  21. extern int pm_suspend_disk(void);
  22. #else
  23. static inline int pm_suspend_disk(void)
  24. {
  25. return -EPERM;
  26. }
  27. #endif
  28. extern struct semaphore pm_sem;
  29. #define power_attr(_name) \
  30. static struct subsys_attribute _name##_attr = { \
  31. .attr = { \
  32. .name = __stringify(_name), \
  33. .mode = 0644, \
  34. }, \
  35. .show = _name##_show, \
  36. .store = _name##_store, \
  37. }
  38. extern struct subsystem power_subsys;
  39. extern int freeze_processes(void);
  40. extern void thaw_processes(void);
  41. extern int pm_prepare_console(void);
  42. extern void pm_restore_console(void);