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>
13 /* struct pbe is used for creating lists of pages that should be restored
14 * atomically during the resume from disk, because the page frames they have
15 * occupied before the suspend are in use.
18 void *address; /* address of the copy */
19 void *orig_address; /* original address of a page */
24 extern void drain_local_pages(void);
25 extern void mark_free_pages(struct zone *zone);
28 /* kernel/power/swsusp.c */
29 extern int software_suspend(void);
31 #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
32 extern int pm_prepare_console(void);
33 extern void pm_restore_console(void);
35 static inline int pm_prepare_console(void) { return 0; }
36 static inline void pm_restore_console(void) {}
37 #endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
39 static inline int software_suspend(void)
41 printk("Warning: fake suspend called\n");
44 #endif /* CONFIG_PM */
46 void save_processor_state(void);
47 void restore_processor_state(void);
49 void __save_processor_state(struct saved_context *ctxt);
50 void __restore_processor_state(struct saved_context *ctxt);
51 unsigned long get_safe_page(gfp_t gfp_mask);
53 /* Page management functions for the software suspend (swsusp) */
55 static inline void swsusp_set_page_forbidden(struct page *page)
60 static inline int swsusp_page_is_forbidden(struct page *page)
62 return PageNosave(page);
65 static inline void swsusp_unset_page_forbidden(struct page *page)
67 ClearPageNosave(page);
70 static inline void swsusp_set_page_free(struct page *page)
72 SetPageNosaveFree(page);
75 static inline int swsusp_page_is_free(struct page *page)
77 return PageNosaveFree(page);
80 static inline void swsusp_unset_page_free(struct page *page)
82 ClearPageNosaveFree(page);
86 * XXX: We try to keep some more pages free so that I/O operations succeed
87 * without paging. Might this be more?
89 #define PAGES_FOR_IO 1024
91 #endif /* _LINUX_SWSUSP_H */