Commit e5ace37d authored by Hou Tao's avatar Hou Tao Committed by Paul E. McKenney
Browse files

locktorture: Ignore nreaders_stress if no readlock support 



Exclusive locks do not have readlock support, which means that a
locktorture run with the following module parameters will do nothing:

 torture_type=mutex_lock nwriters_stress=0 nreaders_stress=1

This commit therefore rejects this combination for exclusive locks by
returning -EINVAL during module init.

Signed-off-by: default avatarHou Tao <houtao1@huawei.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@kernel.org>
parent 6f26d010

kernel/locking/locktorture.c

+2 −1
Original line number Diff line number Diff line
@@ -870,7 +870,8 @@ static int __init lock_torture_init(void) 
		goto unwind;

	}



	if (nwriters_stress == 0 && nreaders_stress == 0) {

	if (nwriters_stress == 0 &&

	    (!cxt.cur_ops->readlock || nreaders_stress == 0)) {

		pr_alert("lock-torture: must run at least one locking thread\n");

		firsterr = -EINVAL;

		goto unwind;