LXR linux-bk/include/linux/suspend.h

   1#ifndef _LINUX_SWSUSP_H
   2#define _LINUX_SWSUSP_H
   3
   4#ifdef CONFIG_X86
   5#include <asm/suspend.h>
   6#endif
   7#include <linux/swap.h>
   8#include <linux/notifier.h>
   9#include <linux/config.h>
  10#include <linux/init.h>
  11#include <linux/pm.h>
  12
  13#ifdef CONFIG_PM
  14/* page backup entry */
  15typedef struct pbe {
  16        unsigned long address;          /* address of the copy */
  17        unsigned long orig_address;     /* original address of page */
  18        swp_entry_t swap_address;       
  19        swp_entry_t dummy;              /* we need scratch space at 
  20                                         * end of page (see link, diskpage)
  21                                         */
  22} suspend_pagedir_t;
  23
  24#define SWAP_FILENAME_MAXLENGTH 32
  25
  26
  27#define SUSPEND_PD_PAGES(x)     (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
  28   
  29/* mm/vmscan.c */
  30extern int shrink_mem(void);
  31
  32/* mm/page_alloc.c */
  33extern void drain_local_pages(void);
  34
  35/* kernel/power/swsusp.c */
  36extern int software_suspend(void);
  37
  38#else   /* CONFIG_SOFTWARE_SUSPEND */
  39static inline int software_suspend(void)
  40{
  41        printk("Warning: fake suspend called\n");
  42        return -EPERM;
  43}
  44#endif  /* CONFIG_SOFTWARE_SUSPEND */
  45
  46
  47#ifdef CONFIG_PM
  48extern void refrigerator(unsigned long);
  49extern int freeze_processes(void);
  50extern void thaw_processes(void);
  51
  52extern int pm_prepare_console(void);
  53extern void pm_restore_console(void);
  54
  55#else
  56static inline void refrigerator(unsigned long flag) {}
  57#endif  /* CONFIG_PM */
  58
  59#ifdef CONFIG_SMP
  60extern void disable_nonboot_cpus(void);
  61extern void enable_nonboot_cpus(void);
  62#else
  63static inline void disable_nonboot_cpus(void) {}
  64static inline void enable_nonboot_cpus(void) {}
  65#endif
  66
  67void save_processor_state(void);
  68void restore_processor_state(void);
  69struct saved_context;
  70void __save_processor_state(struct saved_context *ctxt);
  71void __restore_processor_state(struct saved_context *ctxt);
  72
  73#endif /* _LINUX_SWSUSP_H */
  74