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Commit | Line | Data |
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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> | |
7be98234 | 11 | #include <linux/mm.h> |
1da177e4 | 12 | |
8357376d RW |
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. | |
16 | */ | |
dcbb5a54 | 17 | struct pbe { |
8357376d RW |
18 | void *address; /* address of the copy */ |
19 | void *orig_address; /* original address of a page */ | |
7088a5c0 | 20 | struct pbe *next; |
dcbb5a54 | 21 | }; |
1da177e4 | 22 | |
1da177e4 LT |
23 | /* mm/page_alloc.c */ |
24 | extern void drain_local_pages(void); | |
25 | extern void mark_free_pages(struct zone *zone); | |
26 | ||
27 | #ifdef CONFIG_PM | |
28 | /* kernel/power/swsusp.c */ | |
29 | extern int software_suspend(void); | |
46cd2f32 RW |
30 | |
31 | #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) | |
32 | extern int pm_prepare_console(void); | |
33 | extern void pm_restore_console(void); | |
34 | #else | |
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) */ | |
1da177e4 LT |
38 | #else |
39 | static inline int software_suspend(void) | |
40 | { | |
41 | printk("Warning: fake suspend called\n"); | |
dcbb5a54 | 42 | return -ENOSYS; |
1da177e4 | 43 | } |
46cd2f32 | 44 | #endif /* CONFIG_PM */ |
1da177e4 | 45 | |
1da177e4 LT |
46 | void save_processor_state(void); |
47 | void restore_processor_state(void); | |
48 | struct saved_context; | |
49 | void __save_processor_state(struct saved_context *ctxt); | |
50 | void __restore_processor_state(struct saved_context *ctxt); | |
2c1b4a5c | 51 | unsigned long get_safe_page(gfp_t gfp_mask); |
1da177e4 | 52 | |
7be98234 RW |
53 | /* Page management functions for the software suspend (swsusp) */ |
54 | ||
55 | static inline void swsusp_set_page_forbidden(struct page *page) | |
56 | { | |
57 | SetPageNosave(page); | |
58 | } | |
59 | ||
60 | static inline int swsusp_page_is_forbidden(struct page *page) | |
61 | { | |
62 | return PageNosave(page); | |
63 | } | |
64 | ||
65 | static inline void swsusp_unset_page_forbidden(struct page *page) | |
66 | { | |
67 | ClearPageNosave(page); | |
68 | } | |
69 | ||
70 | static inline void swsusp_set_page_free(struct page *page) | |
71 | { | |
72 | SetPageNosaveFree(page); | |
73 | } | |
74 | ||
75 | static inline int swsusp_page_is_free(struct page *page) | |
76 | { | |
77 | return PageNosaveFree(page); | |
78 | } | |
79 | ||
80 | static inline void swsusp_unset_page_free(struct page *page) | |
81 | { | |
82 | ClearPageNosaveFree(page); | |
83 | } | |
84 | ||
25761b6e RW |
85 | /* |
86 | * XXX: We try to keep some more pages free so that I/O operations succeed | |
87 | * without paging. Might this be more? | |
88 | */ | |
72a97e08 | 89 | #define PAGES_FOR_IO 1024 |
25761b6e | 90 | |
1da177e4 | 91 | #endif /* _LINUX_SWSUSP_H */ |