forked from Minki/linux
b3a93a255e
Limit the size of the suspend image to approx. 500 MB, which should improve the overall performance of swsusp on systems with more than 1 GB of RAM. It introduces the constant IMAGE_SIZE that can be set to the preferred size of the image (in MB) and modifies the memory-shrinking part of swsusp to take this constant into account (500 is the default value of IMAGE_SIZE). Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
73 lines
1.9 KiB
C
73 lines
1.9 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
|
|
|
|
struct swsusp_info {
|
|
struct new_utsname uts;
|
|
u32 version_code;
|
|
unsigned long num_physpages;
|
|
int cpus;
|
|
unsigned long image_pages;
|
|
unsigned long pages;
|
|
swp_entry_t start;
|
|
} __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 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 struct pbe *pagedir_nosave;
|
|
|
|
/*
|
|
* Preferred image size in MB (set it to zero to get the smallest
|
|
* image possible)
|
|
*/
|
|
#define IMAGE_SIZE 500
|
|
|
|
extern asmlinkage int swsusp_arch_suspend(void);
|
|
extern asmlinkage int swsusp_arch_resume(void);
|
|
|
|
extern unsigned int count_data_pages(void);
|
|
extern void free_pagedir(struct pbe *pblist);
|
|
extern void release_eaten_pages(void);
|
|
extern struct pbe *alloc_pagedir(unsigned nr_pages, gfp_t gfp_mask, int safe_needed);
|
|
extern void swsusp_free(void);
|
|
extern int alloc_data_pages(struct pbe *pblist, gfp_t gfp_mask, int safe_needed);
|
|
extern unsigned int snapshot_nr_pages(void);
|
|
extern struct pbe *snapshot_pblist(void);
|
|
extern void snapshot_pblist_set(struct pbe *pblist);
|