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 */
  15 typedef 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 */
  30 extern int shrink_mem(void);
  31
  32 /* mm/page_alloc.c */
  33 extern void drain_local_pages(void);
  34
  35 /* kernel/power/swsusp.c */
  36 extern int software_suspend(void);
  37
  38 #else   /* CONFIG_SOFTWARE_SUSPEND */
  39 static 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
  48 extern void refrigerator(unsigned long);
  49 extern int freeze_processes(void);
  50 extern void thaw_processes(void);
  51
  52 extern int pm_prepare_console(void);
  53 extern void pm_restore_console(void);
  54
  55 #else
  56 static inline void refrigerator(unsigned long flag) {}
  57 #endif  /* CONFIG_PM */
  58
  59 #ifdef CONFIG_SMP
  60 extern void disable_nonboot_cpus(void);
  61 extern void enable_nonboot_cpus(void);
  62 #else
  63 static inline void disable_nonboot_cpus(void) {}
  64 static inline void enable_nonboot_cpus(void) {}
  65 #endif
  66
  67 void save_processor_state(void);
  68 void restore_processor_state(void);
  69 struct saved_context;
  70 void __save_processor_state(struct saved_context *ctxt);
  71 void __restore_processor_state(struct saved_context *ctxt);
  72
  73 #endif /* _LINUX_SWSUSP_H */