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/init.h>
12 /* page backup entry */
14 unsigned long address; /* address of the copy */
15 unsigned long orig_address; /* original address of page */
19 #define for_each_pbe(pbe, pblist) \
20 for (pbe = pblist ; pbe ; pbe = pbe->next)
22 #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe))
23 #define PB_PAGE_SKIP (PBES_PER_PAGE-1)
25 #define for_each_pb_page(pbe, pblist) \
26 for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)
29 #define SWAP_FILENAME_MAXLENGTH 32
32 extern dev_t swsusp_resume_device;
35 extern int shrink_mem(void);
38 extern void drain_local_pages(void);
39 extern void mark_free_pages(struct zone *zone);
42 /* kernel/power/swsusp.c */
43 extern int software_suspend(void);
45 #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
46 extern int pm_prepare_console(void);
47 extern void pm_restore_console(void);
49 static inline int pm_prepare_console(void) { return 0; }
50 static inline void pm_restore_console(void) {}
51 #endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
53 static inline int software_suspend(void)
55 printk("Warning: fake suspend called\n");
58 #endif /* CONFIG_PM */
60 #ifdef CONFIG_SUSPEND_SMP
61 extern void disable_nonboot_cpus(void);
62 extern void enable_nonboot_cpus(void);
64 static inline void disable_nonboot_cpus(void) {}
65 static inline void enable_nonboot_cpus(void) {}
68 void save_processor_state(void);
69 void restore_processor_state(void);
71 void __save_processor_state(struct saved_context *ctxt);
72 void __restore_processor_state(struct saved_context *ctxt);
73 unsigned long get_safe_page(gfp_t gfp_mask);
76 * XXX: We try to keep some more pages free so that I/O operations succeed
77 * without paging. Might this be more?
79 #define PAGES_FOR_IO 1024
81 #endif /* _LINUX_SWSUSP_H */