[PATCH] swsusp: progress in percent

swsusp currently has very poor progress indication.  Thanks to Erik Rigtorp
<erik@rigtorp.com>, we have percentages there, so people know how long wait
to expect.  Please apply,

From: Erik Rigtorp <erik@rigtorp.com>
Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/power/disk.c

@@ -85,10 +85,20 @@ static int in_suspend __nosavedata = 0;
 
 static void free_some_memory(void)
 {
-	printk("Freeing memory: ");
-	while (shrink_all_memory(10000))
-		printk(".");
-	printk("|\n");
+	unsigned int i = 0;
+	unsigned int tmp;
+	unsigned long pages = 0;
+	char *p = "-\\|/";
+
+	printk("Freeing memory...  ");
+	while ((tmp = shrink_all_memory(10000))) {
+		pages += tmp;
+		printk("\b%c", p[i]);
+		i++;
+		if (i > 3)
+			i = 0;
+	}
+	printk("\bdone (%li pages freed)\n", pages);
 }
 
 

kernel/power/swsusp.c

@@ -294,15 +294,19 @@ static int data_write(void)
 {
 	int error = 0;
 	int i;
+	unsigned int mod = nr_copy_pages / 100;
 
-	printk( "Writing data to swap (%d pages): ", nr_copy_pages );
+	if (!mod)
+		mod = 1;
+
+	printk( "Writing data to swap (%d pages)...     ", nr_copy_pages );
 	for (i = 0; i < nr_copy_pages && !error; i++) {
-		if (!(i%100))
-			printk( "." );
+		if (!(i%mod))
+			printk( "\b\b\b\b%3d%%", i / mod );
 		error = write_page((pagedir_nosave+i)->address,
 					  &((pagedir_nosave+i)->swap_address));
 	}
-	printk(" %d Pages done.\n",i);
+	printk("\b\b\b\bdone\n");
 	return error;
 }
 
@@ -1141,14 +1145,18 @@ static int __init data_read(void)
 	struct pbe * p;
 	int error;
 	int i;
+	int mod = nr_copy_pages / 100;
+
+	if (!mod)
+		mod = 1;
 
 	if ((error = swsusp_pagedir_relocate()))
 		return error;
 
-	printk( "Reading image data (%d pages): ", nr_copy_pages );
+	printk( "Reading image data (%d pages):     ", nr_copy_pages );
 	for(i = 0, p = pagedir_nosave; i < nr_copy_pages && !error; i++, p++) {
-		if (!(i%100))
-			printk( "." );
+		if (!(i%mod))
+			printk( "\b\b\b\b%3d%%", i / mod );
 		error = bio_read_page(swp_offset(p->swap_address),
 				  (void *)p->address);
 	}