mirror of
https://github.com/torvalds/linux.git
synced 2024-12-11 21:52:04 +00:00
a0f496517f
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
#include <linux/suspend.h>
|
|
#include <linux/utsname.h>
|
|
|
|
/* With SUSPEND_CONSOLE defined suspend looks *really* cool, but
|
|
we probably do not take enough locks for switching consoles, etc,
|
|
so bad things might happen.
|
|
*/
|
|
#if defined(CONFIG_VT) && defined(CONFIG_VT_CONSOLE)
|
|
#define SUSPEND_CONSOLE (MAX_NR_CONSOLES-1)
|
|
#endif
|
|
|
|
#define MAX_PBES ((PAGE_SIZE - sizeof(struct new_utsname) \
|
|
- 4 - 3*sizeof(unsigned long) - sizeof(int) \
|
|
- sizeof(void *)) / sizeof(swp_entry_t))
|
|
|
|
struct swsusp_info {
|
|
struct new_utsname uts;
|
|
u32 version_code;
|
|
unsigned long num_physpages;
|
|
int cpus;
|
|
unsigned long image_pages;
|
|
unsigned long pagedir_pages;
|
|
suspend_pagedir_t * suspend_pagedir;
|
|
swp_entry_t pagedir[MAX_PBES];
|
|
} __attribute__((aligned(PAGE_SIZE)));
|
|
|
|
|
|
|
|
#ifdef CONFIG_SOFTWARE_SUSPEND
|
|
extern int pm_suspend_disk(void);
|
|
|
|
#else
|
|
static inline int pm_suspend_disk(void)
|
|
{
|
|
return -EPERM;
|
|
}
|
|
#endif
|
|
extern struct semaphore pm_sem;
|
|
#define power_attr(_name) \
|
|
static struct subsys_attribute _name##_attr = { \
|
|
.attr = { \
|
|
.name = __stringify(_name), \
|
|
.mode = 0644, \
|
|
}, \
|
|
.show = _name##_show, \
|
|
.store = _name##_store, \
|
|
}
|
|
|
|
extern struct subsystem power_subsys;
|
|
|
|
extern int freeze_processes(void);
|
|
extern void thaw_processes(void);
|
|
|
|
extern int pm_prepare_console(void);
|
|
extern void pm_restore_console(void);
|
|
|
|
|
|
/* References to section boundaries */
|
|
extern const void __nosave_begin, __nosave_end;
|
|
|
|
extern unsigned int nr_copy_pages;
|
|
extern suspend_pagedir_t *pagedir_nosave;
|
|
extern suspend_pagedir_t *pagedir_save;
|
|
|
|
extern asmlinkage int swsusp_arch_suspend(void);
|
|
extern asmlinkage int swsusp_arch_resume(void);
|
|
|
|
extern int restore_highmem(void);
|
|
extern void free_pagedir(struct pbe *pblist);
|
|
extern struct pbe * alloc_pagedir(unsigned nr_pages);
|
|
extern void create_pbe_list(struct pbe *pblist, unsigned nr_pages);
|
|
extern int enough_swap(unsigned nr_pages);
|