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/* page backup entry */
13struct pbe {
14 unsigned long address; /* address of the copy */
15 unsigned long orig_address; /* original address of page */
16 struct pbe *next;
17};
18
19/* mm/page_alloc.c */
20extern void drain_local_pages(void);
21extern void mark_free_pages(struct zone *zone);
22
23#ifdef CONFIG_PM
24/* kernel/power/swsusp.c */
25extern int software_suspend(void);
26
27#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
28extern int pm_prepare_console(void);
29extern void pm_restore_console(void);
30#else
31static inline int pm_prepare_console(void) { return 0; }
32static inline void pm_restore_console(void) {}
33#endif /* defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE) */
34#else
35static inline int software_suspend(void)
36{
37 printk("Warning: fake suspend called\n");
38 return -ENOSYS;
39}
40#endif /* CONFIG_PM */
41
42void save_processor_state(void);
43void restore_processor_state(void);
44struct saved_context;
45void __save_processor_state(struct saved_context *ctxt);
46void __restore_processor_state(struct saved_context *ctxt);
47unsigned long get_safe_page(gfp_t gfp_mask);
48
49/*
50 * XXX: We try to keep some more pages free so that I/O operations succeed
51 * without paging. Might this be more?
52 */
53#define PAGES_FOR_IO 1024
54
55#endif /* _LINUX_SWSUSP_H */