Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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>
9#include <linux/init.h>
10#include <linux/pm.h>
11
12/* struct pbe is used for creating lists of pages that should be restored
13 * atomically during the resume from disk, because the page frames they have
14 * occupied before the suspend are in use.
15 */
16struct pbe {
17 void *address; /* address of the copy */
18 void *orig_address; /* original address of a page */
19 struct pbe *next;
20};
21
22/* mm/page_alloc.c */
23extern void drain_local_pages(void);
24extern void mark_free_pages(struct zone *zone);
25
26#ifdef CONFIG_PM
27/* kernel/power/swsusp.c */
28extern int software_suspend(void);
29
30#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
31extern int pm_prepare_console(void);
32extern void pm_restore_console(void);
33#else
34static inline int pm_prepare_console(void) { return 0; }
35static inline void pm_restore_console(void) {}
36#endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
37#else
38static inline int software_suspend(void)
39{
40 printk("Warning: fake suspend called\n");
41 return -ENOSYS;
42}
43#endif /* CONFIG_PM */
44
45void save_processor_state(void);
46void restore_processor_state(void);
47struct saved_context;
48void __save_processor_state(struct saved_context *ctxt);
49void __restore_processor_state(struct saved_context *ctxt);
50unsigned long get_safe_page(gfp_t gfp_mask);
51
52/*
53 * XXX: We try to keep some more pages free so that I/O operations succeed
54 * without paging. Might this be more?
55 */
56#define PAGES_FOR_IO 1024
57
58#endif /* _LINUX_SWSUSP_H */