25761b6eb7
The following patch moves the functionality of swsusp related to creating and handling the snapshot of memory to a separate file, snapshot.c This should enable us to untangle the code in the future and eventually to implement some parts of swsusp.c in the user space. The patch does not change the code. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
84 lines
2 KiB
C
84 lines
2 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)
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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/config.h>
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#include <linux/init.h>
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#include <linux/pm.h>
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/* page backup entry */
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typedef struct pbe {
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unsigned long address; /* address of the copy */
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unsigned long orig_address; /* original address of page */
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swp_entry_t swap_address;
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struct pbe *next; /* also used as scratch space at
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* end of page (see link, diskpage)
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*/
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} suspend_pagedir_t;
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#define for_each_pbe(pbe, pblist) \
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for (pbe = pblist ; pbe ; pbe = pbe->next)
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#define PBES_PER_PAGE (PAGE_SIZE/sizeof(struct pbe))
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#define PB_PAGE_SKIP (PBES_PER_PAGE-1)
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#define for_each_pb_page(pbe, pblist) \
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for (pbe = pblist ; pbe ; pbe = (pbe+PB_PAGE_SKIP)->next)
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#define SWAP_FILENAME_MAXLENGTH 32
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extern dev_t swsusp_resume_device;
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/* mm/vmscan.c */
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extern int shrink_mem(void);
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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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#ifdef CONFIG_PM
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/* kernel/power/swsusp.c */
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extern int software_suspend(void);
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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 software_suspend(void)
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{
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printk("Warning: fake suspend called\n");
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return -EPERM;
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}
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#endif
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#ifdef CONFIG_SUSPEND_SMP
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extern void disable_nonboot_cpus(void);
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extern void enable_nonboot_cpus(void);
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#else
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static inline void disable_nonboot_cpus(void) {}
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static inline void enable_nonboot_cpus(void) {}
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#endif
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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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extern unsigned long get_usable_page(gfp_t gfp_mask);
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extern void free_eaten_memory(void);
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/*
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* XXX: We try to keep some more pages free so that I/O operations succeed
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* without paging. Might this be more?
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*/
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#define PAGES_FOR_IO 512
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#endif /* _LINUX_SWSUSP_H */
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