From: Andrew Morton <akpm@osdl.org>
Date: Tue, 26 Sep 2006 06:32:43 +0000 (-0700)
Subject: [PATCH] swsusp: add read-speed instrumentation
X-Git-Tag: v2.6.19-rc1~1112
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=8c002494b55119a3fd1dddee83b4fb75cfda47e5;p=linux-2.6-omap-h63xx.git

[PATCH] swsusp: add read-speed instrumentation

Add some instrumentation to the swsusp readin code to show what bandwidth
we're achieving.

Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 2dc883d361d..9ab98957216 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -522,12 +522,15 @@ static int load_image(struct swap_map_handle *handle,
 	unsigned int m;
 	int ret;
 	int error = 0;
+	struct timeval start;
+	struct timeval stop;
 
 	printk("Loading image data pages (%u pages) ...     ", nr_pages);
 	m = nr_pages / 100;
 	if (!m)
 		m = 1;
 	nr_pages = 0;
+	do_gettimeofday(&start);
 	do {
 		ret = snapshot_write_next(snapshot, PAGE_SIZE);
 		if (ret > 0) {
@@ -539,11 +542,13 @@ static int load_image(struct swap_map_handle *handle,
 			nr_pages++;
 		}
 	} while (ret > 0);
+	do_gettimeofday(&stop);
 	if (!error) {
 		printk("\b\b\b\bdone\n");
 		if (!snapshot_image_loaded(snapshot))
 			error = -ENODATA;
 	}
+	show_speed(&start, &stop, nr_pages, "Read");
 	return error;
 }