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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> | |
9 | #include <linux/config.h> | |
10 | #include <linux/init.h> | |
11 | #include <linux/pm.h> | |
12 | ||
13 | /* page backup entry */ | |
14 | typedef struct pbe { | |
15 | unsigned long address; /* address of the copy */ | |
16 | unsigned long orig_address; /* original address of page */ | |
7088a5c0 | 17 | struct pbe *next; |
1da177e4 LT |
18 | } suspend_pagedir_t; |
19 | ||
20 | #define for_each_pbe(pbe, pblist) \ | |
21 | for (pbe = pblist ; pbe ; pbe = pbe->next) | |
22 | ||
23 | #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe)) | |
24 | #define PB_PAGE_SKIP (PBES_PER_PAGE-1) | |
25 | ||
26 | #define for_each_pb_page(pbe, pblist) \ | |
27 | for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next) | |
28 | ||
29 | ||
30 | #define SWAP_FILENAME_MAXLENGTH 32 | |
31 | ||
32 | ||
33 | extern dev_t swsusp_resume_device; | |
34 | ||
35 | /* mm/vmscan.c */ | |
36 | extern int shrink_mem(void); | |
37 | ||
38 | /* mm/page_alloc.c */ | |
39 | extern void drain_local_pages(void); | |
40 | extern void mark_free_pages(struct zone *zone); | |
41 | ||
42 | #ifdef CONFIG_PM | |
43 | /* kernel/power/swsusp.c */ | |
44 | extern int software_suspend(void); | |
45 | ||
46 | extern int pm_prepare_console(void); | |
47 | extern void pm_restore_console(void); | |
48 | ||
49 | #else | |
50 | static inline int software_suspend(void) | |
51 | { | |
52 | printk("Warning: fake suspend called\n"); | |
53 | return -EPERM; | |
54 | } | |
55 | #endif | |
56 | ||
5a72e04d | 57 | #ifdef CONFIG_SUSPEND_SMP |
1da177e4 LT |
58 | extern void disable_nonboot_cpus(void); |
59 | extern void enable_nonboot_cpus(void); | |
60 | #else | |
61 | static inline void disable_nonboot_cpus(void) {} | |
62 | static inline void enable_nonboot_cpus(void) {} | |
63 | #endif | |
64 | ||
65 | void save_processor_state(void); | |
66 | void restore_processor_state(void); | |
67 | struct saved_context; | |
68 | void __save_processor_state(struct saved_context *ctxt); | |
69 | void __restore_processor_state(struct saved_context *ctxt); | |
2c1b4a5c | 70 | unsigned long get_safe_page(gfp_t gfp_mask); |
1da177e4 | 71 | |
25761b6e RW |
72 | /* |
73 | * XXX: We try to keep some more pages free so that I/O operations succeed | |
74 | * without paging. Might this be more? | |
75 | */ | |
72a97e08 | 76 | #define PAGES_FOR_IO 1024 |
25761b6e | 77 | |
1da177e4 | 78 | #endif /* _LINUX_SWSUSP_H */ |