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1da177e4 LT |
1 | #ifndef _LINUX_SWSUSP_H |
2 | #define _LINUX_SWSUSP_H | |
3 | ||
4 | #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) | |
5 | #include <asm/suspend.h> | |
6 | #endif | |
7 | #include <linux/swap.h> | |
8 | #include <linux/notifier.h> | |
1da177e4 LT |
9 | #include <linux/init.h> |
10 | #include <linux/pm.h> | |
11 | ||
8357376d RW |
12 | /* struct pbe is used for creating lists of pages that should be restored |
13 | * atomically during the resume from disk, because the page frames they have | |
14 | * occupied before the suspend are in use. | |
15 | */ | |
dcbb5a54 | 16 | struct pbe { |
8357376d RW |
17 | void *address; /* address of the copy */ |
18 | void *orig_address; /* original address of a page */ | |
7088a5c0 | 19 | struct pbe *next; |
dcbb5a54 | 20 | }; |
1da177e4 | 21 | |
1da177e4 LT |
22 | /* mm/page_alloc.c */ |
23 | extern void drain_local_pages(void); | |
24 | extern void mark_free_pages(struct zone *zone); | |
25 | ||
26 | #ifdef CONFIG_PM | |
27 | /* kernel/power/swsusp.c */ | |
28 | extern int software_suspend(void); | |
46cd2f32 RW |
29 | |
30 | #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) | |
31 | extern int pm_prepare_console(void); | |
32 | extern void pm_restore_console(void); | |
33 | #else | |
34 | static inline int pm_prepare_console(void) { return 0; } | |
35 | static inline void pm_restore_console(void) {} | |
36 | #endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */ | |
1da177e4 LT |
37 | #else |
38 | static inline int software_suspend(void) | |
39 | { | |
40 | printk("Warning: fake suspend called\n"); | |
dcbb5a54 | 41 | return -ENOSYS; |
1da177e4 | 42 | } |
46cd2f32 | 43 | #endif /* CONFIG_PM */ |
1da177e4 | 44 | |
1da177e4 LT |
45 | void save_processor_state(void); |
46 | void restore_processor_state(void); | |
47 | struct saved_context; | |
48 | void __save_processor_state(struct saved_context *ctxt); | |
49 | void __restore_processor_state(struct saved_context *ctxt); | |
2c1b4a5c | 50 | unsigned long get_safe_page(gfp_t gfp_mask); |
1da177e4 | 51 | |
25761b6e RW |
52 | /* |
53 | * XXX: We try to keep some more pages free so that I/O operations succeed | |
54 | * without paging. Might this be more? | |
55 | */ | |
72a97e08 | 56 | #define PAGES_FOR_IO 1024 |
25761b6e | 57 | |
1da177e4 | 58 | #endif /* _LINUX_SWSUSP_H */ |