projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ | |
| 17 | swp_entry_t swap_address; | |
| 18 | ||
| 19 | struct pbe *next; /* also used as scratch space at | |
| 20 | * end of page (see link, diskpage) | |
| 21 | */ | |
| 22 | } suspend_pagedir_t; | |
| 23 | ||
| 24 | #define for_each_pbe(pbe, pblist) \ | |
| 25 | for (pbe = pblist ; pbe ; pbe = pbe->next) | |
| 26 | ||
| 27 | #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe)) | |
| 28 | #define PB_PAGE_SKIP (PBES_PER_PAGE-1) | |
| 29 | ||
| 30 | #define for_each_pb_page(pbe, pblist) \ | |
| 31 | for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next) | |
| 32 | ||
| 33 | ||
| 34 | #define SWAP_FILENAME_MAXLENGTH 32 | |
| 35 | ||
| 36 | ||
| 37 | extern dev_t swsusp_resume_device; | |
| 38 | ||
| 39 | /* mm/vmscan.c */ | |
| 40 | extern int shrink_mem(void); | |
| 41 | ||
| 42 | /* mm/page_alloc.c */ | |
| 43 | extern void drain_local_pages(void); | |
| 44 | extern void mark_free_pages(struct zone *zone); | |
| 45 | ||
| 46 | #ifdef CONFIG_PM | |
| 47 | /* kernel/power/swsusp.c */ | |
| 48 | extern int software_suspend(void); | |
| 49 | ||
| 50 | extern int pm_prepare_console(void); | |
| 51 | extern void pm_restore_console(void); | |
| 52 | ||
| 53 | #else | |
| 54 | static inline int software_suspend(void) | |
| 55 | { | |
| 56 | printk("Warning: fake suspend called\n"); | |
| 57 | return -EPERM; | |
| 58 | } | |
| 59 | #endif | |
| 60 | ||
| 5a72e04d | 61 | #ifdef CONFIG_SUSPEND_SMP |
| 1da177e4 LT |
62 | extern void disable_nonboot_cpus(void); |
| 63 | extern void enable_nonboot_cpus(void); | |
| 64 | #else | |
| 65 | static inline void disable_nonboot_cpus(void) {} | |
| 66 | static inline void enable_nonboot_cpus(void) {} | |
| 67 | #endif | |
| 68 | ||
| 69 | void save_processor_state(void); | |
| 70 | void restore_processor_state(void); | |
| 71 | struct saved_context; | |
| 72 | void __save_processor_state(struct saved_context *ctxt); | |
| 73 | void __restore_processor_state(struct saved_context *ctxt); | |
| 2c1b4a5c | 74 | unsigned long get_safe_page(gfp_t gfp_mask); |
| 1da177e4 | 75 | |
| 25761b6e RW |
76 | /* |
| 77 | * XXX: We try to keep some more pages free so that I/O operations succeed | |
| 78 | * without paging. Might this be more? | |
| 79 | */ | |
| 80 | #define PAGES_FOR_IO 512 | |
| 81 | ||
| 1da177e4 | 82 | #endif /* _LINUX_SWSUSP_H */ |