X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fpower%2Fswsusp.c;h=0b66659dc516f13eed980412dc196781ffa6892e;hb=2dc20a51dc1e2da6eae1182cfe4c4835fca26017;hp=f0ee4e7780d66d95cce50199a1c2ebee00cbe9b0;hpb=c0897856553d45aee1780bed455b7c2e888dd64b;p=linux-2.6

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index f0ee4e7780..0b66659dc5 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -62,6 +62,16 @@ 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 inline int save_highmem(void) { return 0; }
+static inline int restore_highmem(void) { return 0; }
+static inline 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.
@@ -182,15 +192,14 @@ int swsusp_shrink_memory(void)
 
 	printk("Shrinking memory...  ");
 	do {
-		size = 2 * count_special_pages();
-		size += size / 50 + count_data_pages();
-		size += (size + PBES_PER_PAGE - 1) / PBES_PER_PAGE +
-			PAGES_FOR_IO;
+		size = 2 * count_highmem_pages();
+		size += size / 50 + count_data_pages() + PAGES_FOR_IO;
 		tmp = size;
 		for_each_zone (zone)
 			if (!is_highmem(zone) && populated_zone(zone)) {
 				tmp -= zone->free_pages;
 				tmp += zone->lowmem_reserve[ZONE_NORMAL];
+				tmp += snapshot_additional_pages(zone);
 			}
 		if (tmp > 0) {
 			tmp = __shrink_memory(tmp);
@@ -226,7 +235,7 @@ int swsusp_suspend(void)
 		goto Enable_irqs;
 	}
 
-	if ((error = save_special_mem())) {
+	if ((error = save_highmem())) {
 		printk(KERN_ERR "swsusp: Not enough free pages for highmem\n");
 		goto Restore_highmem;
 	}
@@ -237,7 +246,10 @@ int swsusp_suspend(void)
 	/* Restore control flow magically appears here */
 	restore_processor_state();
 Restore_highmem:
-	restore_special_mem();
+	restore_highmem();
+	/* NOTE:  device_power_up() is just a resume() for devices
+	 * that suspended with irqs off ... no overall powerup.
+	 */
 	device_power_up();
 Enable_irqs:
 	local_irq_enable();
@@ -247,8 +259,12 @@ Enable_irqs:
 int swsusp_resume(void)
 {
 	int error;
+
 	local_irq_disable();
-	if (device_power_down(PMSG_FREEZE))
+	/* NOTE:  device_power_down() is just a suspend() with irqs off;
+	 * it has no special "power things down" semantics
+	 */
+	if (device_power_down(PMSG_PRETHAW))
 		printk(KERN_ERR "Some devices failed to power down, very bad\n");
 	/* We'll ignore saved state, but this gets preempt count (etc) right */
 	save_processor_state();
@@ -263,7 +279,7 @@ int swsusp_resume(void)
 	 */
 	swsusp_free();
 	restore_processor_state();
-	restore_special_mem();
+	restore_highmem();
 	touch_softlockup_watchdog();
 	device_power_up();
 	local_irq_enable();