[PATCH] swsusp: Measure memory shrinking time

Make swsusp measure and print the time needed to shrink memory during the
suspend.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Nigel Cunningham <nigel@suspend2.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 22 deletions

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 52e70ca832a8..dedf8797b723 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -133,26 +133,6 @@ static int wait_on_bio_chain(struct bio **bio_chain)
         return ret;
 }
 
-static void show_speed(struct timeval *start, struct timeval *stop,
-                        unsigned nr_pages, char *msg)
-{
-        s64 elapsed_centisecs64;
-        int centisecs;
-        int k;
-        int kps;
-
-        elapsed_centisecs64 = timeval_to_ns(stop) - timeval_to_ns(start);
-        do_div(elapsed_centisecs64, NSEC_PER_SEC / 100);
-        centisecs = elapsed_centisecs64;
-        if (centisecs == 0)
-                centisecs = 1;  /* avoid div-by-zero */
-        k = nr_pages * (PAGE_SIZE / 1024);
-        kps = (k * 100) / centisecs;
-        printk("%s %d kbytes in %d.%02d seconds (%d.%02d MB/s)\n", msg, k,
-                        centisecs / 100, centisecs % 100,
-                        kps / 1000, (kps % 1000) / 10);
-}
-
 /*
  * Saving part
  */
@@ -375,7 +355,7 @@ static int save_image(struct swap_map_handle *handle,
                 error = err2;
         if (!error)
                 printk("\b\b\b\bdone\n");
-        show_speed(&start, &stop, nr_to_write, "Wrote");
+        swsusp_show_speed(&start, &stop, nr_to_write, "Wrote");
         return error;
 }
 
@@ -562,7 +542,7 @@ static int load_image(struct swap_map_handle *handle,
                 if (!snapshot_image_loaded(snapshot))
                         error = -ENODATA;
         }
-        show_speed(&start, &stop, nr_to_read, "Read");
+        swsusp_show_speed(&start, &stop, nr_to_read, "Read");
         return error;
 }