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authorShaohua Li <shaohua.li@intel.com>2006-06-23 02:04:44 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:42:59 -0700
commitce4ab0012b32c1a4a1d6e934aeb73bf3151c48d9 (patch)
tree83b5ba44e93eeb8b72fe14028ac25943f77844fe /kernel/power/swsusp.c
parent82dcaafc92fdfbe2c1d6c50b9f5e17d533caf950 (diff)
[PATCH] swsusp: add architecture special saveable pages support
1. Add architecture specific pages save/restore support. Next two patches will use this to save/restore 'ACPI NVS' pages. 2. Allow reserved pages 'nosave'. This could avoid save/restore BIOS reserved pages. Signed-off-by: Shaohua Li <shaohua.li@intel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Nigel Cunningham <nigel@suspend2.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power/swsusp.c')
-rw-r--r--kernel/power/swsusp.c18
1 files changed, 4 insertions, 14 deletions
diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index f9238faf76e..78b6e71b081 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -62,16 +62,6 @@ unsigned long image_size = 500 * 1024 * 1024;
int in_suspend __nosavedata = 0;
-#ifdef CONFIG_HIGHMEM
-unsigned int count_highmem_pages(void);
-int save_highmem(void);
-int restore_highmem(void);
-#else
-static int save_highmem(void) { return 0; }
-static int restore_highmem(void) { return 0; }
-static unsigned int count_highmem_pages(void) { return 0; }
-#endif
-
/**
* The following functions are used for tracing the allocated
* swap pages, so that they can be freed in case of an error.
@@ -192,7 +182,7 @@ int swsusp_shrink_memory(void)
printk("Shrinking memory... ");
do {
- size = 2 * count_highmem_pages();
+ size = 2 * count_special_pages();
size += size / 50 + count_data_pages();
size += (size + PBES_PER_PAGE - 1) / PBES_PER_PAGE +
PAGES_FOR_IO;
@@ -234,7 +224,7 @@ int swsusp_suspend(void)
goto Enable_irqs;
}
- if ((error = save_highmem())) {
+ if ((error = save_special_mem())) {
printk(KERN_ERR "swsusp: Not enough free pages for highmem\n");
goto Restore_highmem;
}
@@ -245,7 +235,7 @@ int swsusp_suspend(void)
/* Restore control flow magically appears here */
restore_processor_state();
Restore_highmem:
- restore_highmem();
+ restore_special_mem();
device_power_up();
Enable_irqs:
local_irq_enable();
@@ -271,7 +261,7 @@ int swsusp_resume(void)
*/
swsusp_free();
restore_processor_state();
- restore_highmem();
+ restore_special_mem();
touch_softlockup_watchdog();
device_power_up();
local_irq_enable();