1 #ifndef _LINUX_SWSUSP_H
2 #define _LINUX_SWSUSP_H
4 #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32)
5 #include <asm/suspend.h>
7 #include <linux/swap.h>
8 #include <linux/notifier.h>
9 #include <linux/config.h>
10 #include <linux/init.h>
13 /* page backup entry */
15 unsigned long address; /* address of the copy */
16 unsigned long orig_address; /* original address of page */
20 #define for_each_pbe(pbe, pblist) \
21 for (pbe = pblist ; pbe ; pbe = pbe->next)
23 #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe))
24 #define PB_PAGE_SKIP (PBES_PER_PAGE-1)
26 #define for_each_pb_page(pbe, pblist) \
27 for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)
30 #define SWAP_FILENAME_MAXLENGTH 32
33 extern dev_t swsusp_resume_device;
36 extern int shrink_mem(void);
39 extern void drain_local_pages(void);
40 extern void mark_free_pages(struct zone *zone);
43 /* kernel/power/swsusp.c */
44 extern int software_suspend(void);
46 #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
47 extern int pm_prepare_console(void);
48 extern void pm_restore_console(void);
50 static inline int pm_prepare_console(void) { return 0; }
51 static inline void pm_restore_console(void) {}
52 #endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
54 static inline int software_suspend(void)
56 printk("Warning: fake suspend called\n");
59 #endif /* CONFIG_PM */
61 #ifdef CONFIG_SUSPEND_SMP
62 extern void disable_nonboot_cpus(void);
63 extern void enable_nonboot_cpus(void);
65 static inline void disable_nonboot_cpus(void) {}
66 static inline void enable_nonboot_cpus(void) {}
69 void save_processor_state(void);
70 void restore_processor_state(void);
72 void __save_processor_state(struct saved_context *ctxt);
73 void __restore_processor_state(struct saved_context *ctxt);
74 unsigned long get_safe_page(gfp_t gfp_mask);
77 * XXX: We try to keep some more pages free so that I/O operations succeed
78 * without paging. Might this be more?
80 #define PAGES_FOR_IO 1024
82 #endif /* _LINUX_SWSUSP_H */