LXR linux-bk/kernel/power/power.h

   1
   2
   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
  11
  12#ifdef CONFIG_PM_DISK
  13extern int pm_suspend_disk(void);
  14
  15#else
  16static inline int pm_suspend_disk(void)
  17{
  18        return -EPERM;
  19}
  20#endif
  21
  22extern struct semaphore pm_sem;
  23#define power_attr(_name) \
  24static struct subsys_attribute _name##_attr = { \
  25        .attr   = {                             \
  26                .name = __stringify(_name),     \
  27                .mode = 0644,                   \
  28        },                                      \
  29        .show   = _name##_show,                 \
  30        .store  = _name##_store,                \
  31}
  32
  33extern struct subsystem power_subsys;
  34
  35extern int freeze_processes(void);
  36extern void thaw_processes(void);
  37
  38extern int pm_prepare_console(void);
  39extern void pm_restore_console(void);
  40