#ifndef _LINUX_SWSUSP_H #define _LINUX_SWSUSP_H #if defined(CONFIG_X86) || defined(CONFIG_FRV) || defined(CONFIG_PPC32) #include <asm/suspend.h> #endif #include <linux/swap.h> #include <linux/notifier.h> #include <linux/config.h> #include <linux/init.h> #include <linux/pm.h> /* page backup entry */ typedef struct pbe { unsigned long address; /* address of the copy */ unsigned long orig_address; /* original address of page */ swp_entry_t swap_address; struct pbe *next; /* also used as scratch space at * end of page (see link, diskpage) */ } suspend_pagedir_t; #define for_each_pbe(pbe, pblist) \ for (pbe = pblist ; pbe ; pbe = pbe->next) #define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe)) #define PB_PAGE_SKIP (PBES_PER_PAGE-1) #define for_each_pb_page(pbe, pblist) \ for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next) #define SWAP_FILENAME_MAXLENGTH 32 extern dev_t swsusp_resume_device; /* mm/vmscan.c */ extern int shrink_mem(void); /* mm/page_alloc.c */ 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); extern int pm_prepare_console(void); extern void pm_restore_console(void); #else static inline int software_suspend(void) { printk("Warning: fake suspend called\n"); return -EPERM; } #endif #ifdef CONFIG_SUSPEND_SMP extern void disable_nonboot_cpus(void); extern void enable_nonboot_cpus(void); #else static inline void disable_nonboot_cpus(void) {} static inline void enable_nonboot_cpus(void) {} #endif 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); extern unsigned long get_usable_page(gfp_t gfp_mask); extern void free_eaten_memory(void); /* * 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 512 #endif /* _LINUX_SWSUSP_H */