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[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>
This commit is contained in:
Andrew Morton 2006-09-25 23:32:43 -07:00 committed by Linus Torvalds
parent ab95416035
commit 8c002494b5
1 changed files with 5 additions and 0 deletions
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5
kernel/power/swap.c
View File

@ -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;
}