Linux kernel & device driver programming

Cross-Referenced Linux and Device Driver Code

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Version: [ 2.6.11.8 ] [ 2.6.25 ] [ 2.6.25.8 ] Architecture: [ i386 ]
  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 */
 14 typedef 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 */
 29 extern int shrink_mem(void);
 30 
 31 /* mm/page_alloc.c */
 32 extern void drain_local_pages(void);
 33 extern void mark_free_pages(struct zone *zone);
 34 
 35 #ifdef CONFIG_PM
 36 /* kernel/power/swsusp.c */
 37 extern int software_suspend(void);
 38 
 39 extern int pm_prepare_console(void);
 40 extern void pm_restore_console(void);
 41 
 42 #else
 43 static inline int software_suspend(void)
 44 {
 45         printk("Warning: fake suspend called\n");
 46         return -EPERM;
 47 }
 48 #endif
 49 
 50 #ifdef CONFIG_SMP
 51 extern void disable_nonboot_cpus(void);
 52 extern void enable_nonboot_cpus(void);
 53 #else
 54 static inline void disable_nonboot_cpus(void) {}
 55 static inline void enable_nonboot_cpus(void) {}
 56 #endif
 57 
 58 void save_processor_state(void);
 59 void restore_processor_state(void);
 60 struct saved_context;
 61 void __save_processor_state(struct saved_context *ctxt);
 62 void __restore_processor_state(struct saved_context *ctxt);
 63 
 64 #endif /* _LINUX_SWSUSP_H */
 65 
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