89 lines
3.0 KiB
C
89 lines
3.0 KiB
C
#ifndef _LINUX_SWSUSP_H
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#define _LINUX_SWSUSP_H
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#if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) || defined(CONFIG_PPC64)
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#include <asm/suspend.h>
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#endif
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#include <linux/swap.h>
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#include <linux/notifier.h>
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#include <linux/init.h>
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#include <linux/pm.h>
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#include <linux/mm.h>
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/* struct pbe is used for creating lists of pages that should be restored
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* atomically during the resume from disk, because the page frames they have
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* occupied before the suspend are in use.
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*/
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struct pbe {
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void *address; /* address of the copy */
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void *orig_address; /* original address of a page */
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struct pbe *next;
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};
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/* mm/page_alloc.c */
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extern void drain_local_pages(void);
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extern void mark_free_pages(struct zone *zone);
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#if defined(CONFIG_PM) && defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
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extern int pm_prepare_console(void);
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extern void pm_restore_console(void);
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#else
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static inline int pm_prepare_console(void) { return 0; }
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static inline void pm_restore_console(void) {}
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#endif
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/**
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* struct hibernation_ops - hibernation platform support
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*
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* The methods in this structure allow a platform to override the default
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* mechanism of shutting down the machine during a hibernation transition.
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*
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* All three methods must be assigned.
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*
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* @prepare: prepare system for hibernation
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* @enter: shut down system after state has been saved to disk
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* @finish: finish/clean up after state has been reloaded
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*/
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struct hibernation_ops {
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int (*prepare)(void);
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int (*enter)(void);
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void (*finish)(void);
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};
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#if defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND)
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/* kernel/power/snapshot.c */
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extern void __register_nosave_region(unsigned long b, unsigned long e, int km);
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static inline void register_nosave_region(unsigned long b, unsigned long e)
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{
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__register_nosave_region(b, e, 0);
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}
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static inline void register_nosave_region_late(unsigned long b, unsigned long e)
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{
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__register_nosave_region(b, e, 1);
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}
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extern int swsusp_page_is_forbidden(struct page *);
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extern void swsusp_set_page_free(struct page *);
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extern void swsusp_unset_page_free(struct page *);
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extern unsigned long get_safe_page(gfp_t gfp_mask);
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extern void hibernation_set_ops(struct hibernation_ops *ops);
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extern int hibernate(void);
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#else
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static inline void register_nosave_region(unsigned long b, unsigned long e) {}
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static inline void register_nosave_region_late(unsigned long b, unsigned long e) {}
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static inline int swsusp_page_is_forbidden(struct page *p) { return 0; }
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static inline void swsusp_set_page_free(struct page *p) {}
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static inline void swsusp_unset_page_free(struct page *p) {}
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static inline void hibernation_set_ops(struct hibernation_ops *ops) {}
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static inline int hibernate(void) { return -ENOSYS; }
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#endif /* defined(CONFIG_PM) && defined(CONFIG_SOFTWARE_SUSPEND) */
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void save_processor_state(void);
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void restore_processor_state(void);
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struct saved_context;
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void __save_processor_state(struct saved_context *ctxt);
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void __restore_processor_state(struct saved_context *ctxt);
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#endif /* _LINUX_SWSUSP_H */
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