[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 2dc883d..9ab9895 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -522,12 +522,15 @@
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 @@
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;
}