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

   1#include <linux/suspend.h>
   2#include <linux/utsname.h>
   3
   4/* With SUSPEND_CONSOLE defined, it suspend looks *really* cool, but
   5   we probably do not take enough locks for switching consoles, etc,
   6   so bad things might happen.
   7*/
   8#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
   9#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
  10#endif
  11
  12
  13struct swsusp_info {
  14        struct new_utsname      uts;
  15        u32                     version_code;
  16        unsigned long           num_physpages;
  17        int                     cpus;
  18        unsigned long           image_pages;
  19        unsigned long           pagedir_pages;
  20        suspend_pagedir_t       * suspend_pagedir;
  21        swp_entry_t             pagedir[768];
  22} __attribute__((aligned(PAGE_SIZE)));
  23
  24
  25
  26#ifdef CONFIG_SOFTWARE_SUSPEND
  27extern int pm_suspend_disk(void);
  28
  29#else
  30static inline int pm_suspend_disk(void)
  31{
  32        return -EPERM;
  33}
  34#endif
  35extern struct semaphore pm_sem;
  36#define power_attr(_name) \
  37static struct subsys_attribute _name##_attr = { \
  38        .attr   = {                             \
  39                .name = __stringify(_name),     \
  40                .mode = 0644,                   \
  41        },                                      \
  42        .show   = _name##_show,                 \
  43        .store  = _name##_store,                \
  44}
  45
  46extern struct subsystem power_subsys;
  47
  48extern int freeze_processes(void);
  49extern void thaw_processes(void);
  50
  51extern int pm_prepare_console(void);
  52extern void pm_restore_console(void);
  53