1 #ifndef _LINUX_SWSUSP_H
2 #define _LINUX_SWSUSP_H
5 #include <asm/suspend.h>
7 #include <linux/swap.h>
8 #include <linux/notifier.h>
9 #include <linux/config.h>
10 #include <linux/init.h>
12 extern unsigned char software_suspend_enabled;
15 #define RESUME_SPECIFIED 2
17 #ifdef CONFIG_SOFTWARE_SUSPEND
18 /* page backup entry */
20 unsigned long address; /* address of the copy */
21 unsigned long orig_address; /* original address of page */
22 swp_entry_t swap_address;
23 swp_entry_t dummy; /* we need scratch space at
24 * end of page (see link, diskpage)
28 #define SWAP_FILENAME_MAXLENGTH 32
30 struct suspend_header {
32 unsigned long num_physpages;
37 suspend_pagedir_t *suspend_pagedir;
38 unsigned int num_pbes;
39 struct swap_location {
40 char filename[SWAP_FILENAME_MAXLENGTH];
41 } swap_location[MAX_SWAPFILES];
44 #define SUSPEND_PD_PAGES(x) (((x)*sizeof(struct pbe))/PAGE_SIZE+1)
47 extern int shrink_mem(void);
50 extern void drain_local_pages(void);
52 /* kernel/suspend.c */
53 extern void software_suspend(void);
54 extern void software_resume(void);
56 extern int register_suspend_notifier(struct notifier_block *);
57 extern int unregister_suspend_notifier(struct notifier_block *);
59 extern unsigned int nr_copy_pages __nosavedata;
60 extern suspend_pagedir_t *pagedir_nosave __nosavedata;
62 /* Communication between kernel/suspend.c and arch/i386/suspend.c */
64 extern void do_magic_resume_1(void);
65 extern void do_magic_resume_2(void);
66 extern void do_magic_suspend_1(void);
67 extern void do_magic_suspend_2(void);
69 /* Communication between acpi and arch/i386/suspend.c */
71 extern void do_suspend_lowlevel(int resume);
72 extern void do_suspend_lowlevel_s4bios(int resume);
74 #else /* CONFIG_SOFTWARE_SUSPEND */
75 static inline void software_suspend(void)
78 #define software_resume() do { } while(0)
79 #define register_suspend_notifier(a) do { } while(0)
80 #define unregister_suspend_notifier(a) do { } while(0)
81 #endif /* CONFIG_SOFTWARE_SUSPEND */
85 extern void refrigerator(unsigned long);
86 extern int freeze_processes(void);
87 extern void thaw_processes(void);
89 extern int pm_prepare_console(void);
90 extern void pm_restore_console(void);
93 static inline void refrigerator(unsigned long flag)
97 static inline int freeze_processes(void)
101 static inline void thaw_processes(void)
105 #endif /* CONFIG_PM */
107 #endif /* _LINUX_SWSUSP_H */