projects / mirror_ubuntu-bionic-kernel.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> | |
| 1da177e4 LT |
9 | #include <linux/init.h> |
| 10 | #include <linux/pm.h> | |
| 11 | ||
| 12 | /* page backup entry */ | |
| 13 | typedef struct pbe { | |
| 14 | unsigned long address; /* address of the copy */ | |
| 15 | unsigned long orig_address; /* original address of page */ | |
| 7088a5c0 | 16 | struct pbe *next; |
| 1da177e4 LT |
17 | } suspend_pagedir_t; |
| 18 | ||
| 19 | #define for_each_pbe(pbe, pblist) \ | |
| 20 | for (pbe = pblist ; pbe ; pbe = pbe->next) | |
| 21 | ||
| 22 | #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe)) | |
| 23 | #define PB_PAGE_SKIP (PBES_PER_PAGE-1) | |
| 24 | ||
| 25 | #define for_each_pb_page(pbe, pblist) \ | |
| 26 | for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next) | |
| 27 | ||
| 28 | ||
| 29 | #define SWAP_FILENAME_MAXLENGTH 32 | |
| 30 | ||
| 31 | ||
| 32 | extern dev_t swsusp_resume_device; | |
| 33 | ||
| 34 | /* mm/vmscan.c */ | |
| 35 | extern int shrink_mem(void); | |
| 36 | ||
| 37 | /* mm/page_alloc.c */ | |
| 38 | extern void drain_local_pages(void); | |
| 39 | extern void mark_free_pages(struct zone *zone); | |
| 40 | ||
| 41 | #ifdef CONFIG_PM | |
| 42 | /* kernel/power/swsusp.c */ | |
| 43 | extern int software_suspend(void); | |
| 46cd2f32 RW |
44 | |
| 45 | #if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) | |
| 46 | extern int pm_prepare_console(void); | |
| 47 | extern void pm_restore_console(void); | |
| 48 | #else | |
| 49 | static inline int pm_prepare_console(void) { return 0; } | |
| 50 | static inline void pm_restore_console(void) {} | |
| 51 | #endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */ | |
| 1da177e4 LT |
52 | #else |
| 53 | static inline int software_suspend(void) | |
| 54 | { | |
| 55 | printk("Warning: fake suspend called\n"); | |
| 56 | return -EPERM; | |
| 57 | } | |
| 46cd2f32 | 58 | #endif /* CONFIG_PM */ |
| 1da177e4 | 59 | |
| 1da177e4 LT |
60 | void save_processor_state(void); |
| 61 | void restore_processor_state(void); | |
| 62 | struct saved_context; | |
| 63 | void __save_processor_state(struct saved_context *ctxt); | |
| 64 | void __restore_processor_state(struct saved_context *ctxt); | |
| 2c1b4a5c | 65 | unsigned long get_safe_page(gfp_t gfp_mask); |
| 1da177e4 | 66 | |
| 25761b6e RW |
67 | /* |
| 68 | * XXX: We try to keep some more pages free so that I/O operations succeed | |
| 69 | * without paging. Might this be more? | |
| 70 | */ | |
| 72a97e08 | 71 | #define PAGES_FOR_IO 1024 |
| 25761b6e | 72 | |
| 1da177e4 | 73 | #endif /* _LINUX_SWSUSP_H */ |