Commit e3aa745f authored by Zenghui Yu's avatar Zenghui Yu Committed by Greg Kroah-Hartman
Browse files

driver core: Use the ktime_us_delta() helper 



Use the ktime_us_delta() helper to measure the driver probe time. Given the
helpers already returns an s64 value, let's drop the unnecessary casting to
s64 as well. There is no functional change.

Signed-off-by: default avatarZenghui Yu <yuzenghui@huawei.com>
Link: https://lore.kernel.org/r/20200803033343.1178-1-yuzenghui@huawei.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 18efb2f9

drivers/base/dd.c

+2 −3
Original line number Diff line number Diff line
@@ -658,15 +658,14 @@ static int really_probe(struct device *dev, struct device_driver *drv) 
 */

static int really_probe_debug(struct device *dev, struct device_driver *drv)

{

	ktime_t calltime, delta, rettime;

	ktime_t calltime, rettime;

	int ret;



	calltime = ktime_get();

	ret = really_probe(dev, drv);

	rettime = ktime_get();

	delta = ktime_sub(rettime, calltime);

	pr_debug("probe of %s returned %d after %lld usecs\n",

		 dev_name(dev), ret, (s64) ktime_to_us(delta));

		 dev_name(dev), ret, ktime_us_delta(rettime, calltime));

	return ret;

}