LXR linux/include/linux/suspend.h

   1#ifndef _LINUX_SWSUSP_H
   2#define _LINUX_SWSUSP_H
   3
   4#if defined(CONFIG_X86) || defined(CONFIG_FRV)
   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/* page backup entry */
  14typedef struct pbe {
  15        unsigned long address;          /* address of the copy */
  16        unsigned long orig_address;     /* original address of page */
  17        swp_entry_t swap_address;       
  18        swp_entry_t dummy;              /* we need scratch space at 
  19                                         * end of page (see link, diskpage)
  20                                         */
  21} suspend_pagedir_t;
  22
  23#define SWAP_FILENAME_MAXLENGTH 32
  24
  25
  26#define SUSPEND_PD_PAGES(x)     (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
  27   
  28/* mm/vmscan.c */
  29extern int shrink_mem(void);
  30
  31/* mm/page_alloc.c */
  32extern void drain_local_pages(void);
  33extern void mark_free_pages(struct zone *zone);
  34
  35#ifdef CONFIG_PM
  36/* kernel/power/swsusp.c */
  37extern int software_suspend(void);
  38
  39extern int pm_prepare_console(void);
  40extern void pm_restore_console(void);
  41
  42#else
  43static inline int software_suspend(void)
  44{
  45        printk("Warning: fake suspend called\n");
  46        return -EPERM;
  47}
  48#endif
  49
  50#ifdef CONFIG_SMP
  51extern void disable_nonboot_cpus(void);
  52extern void enable_nonboot_cpus(void);
  53#else
  54static inline void disable_nonboot_cpus(void) {}
  55static inline void enable_nonboot_cpus(void) {}
  56#endif
  57
  58void save_processor_state(void);
  59void restore_processor_state(void);
  60struct saved_context;
  61void __save_processor_state(struct saved_context *ctxt);
  62void __restore_processor_state(struct saved_context *ctxt);
  63
  64#endif /* _LINUX_SWSUSP_H */
  65