diff options
Diffstat (limited to 'include/linux/suspend.h')
| -rw-r--r-- | include/linux/suspend.h | 35 |
1 files changed, 16 insertions, 19 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index bf99bd49f8e..96868be9c21 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -8,6 +8,7 @@ #include <linux/notifier.h> #include <linux/init.h> #include <linux/pm.h> +#include <linux/mm.h> /* struct pbe is used for creating lists of pages that should be restored * atomically during the resume from disk, because the page frames they have @@ -23,36 +24,32 @@ struct pbe { extern void drain_local_pages(void); extern void mark_free_pages(struct zone *zone); -#ifdef CONFIG_PM -/* kernel/power/swsusp.c */ -extern int software_suspend(void); - -#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) +#if defined(CONFIG_PM) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) extern int pm_prepare_console(void); extern void pm_restore_console(void); #else static inline int pm_prepare_console(void) { return 0; } static inline void pm_restore_console(void) {} -#endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */ +#endif + +#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) +/* kernel/power/snapshot.c */ +extern void __init register_nosave_region(unsigned long, unsigned long); +extern int swsusp_page_is_forbidden(struct page *); +extern void swsusp_set_page_free(struct page *); +extern void swsusp_unset_page_free(struct page *); +extern unsigned long get_safe_page(gfp_t gfp_mask); #else -static inline int software_suspend(void) -{ - printk("Warning: fake suspend called\n"); - return -ENOSYS; -} -#endif /* CONFIG_PM */ +static inline void register_nosave_region(unsigned long b, unsigned long e) {} +static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } +static inline void swsusp_set_page_free(struct page *p) {} +static inline void swsusp_unset_page_free(struct page *p) {} +#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */ void save_processor_state(void); void restore_processor_state(void); struct saved_context; void __save_processor_state(struct saved_context *ctxt); void __restore_processor_state(struct saved_context *ctxt); -unsigned long get_safe_page(gfp_t gfp_mask); - -/* - * XXX: We try to keep some more pages free so that I/O operations succeed - * without paging. Might this be more? - */ -#define PAGES_FOR_IO 1024 #endif /* _LINUX_SWSUSP_H */ |