torture: Intensify locking test

The current lock_torture_writer() spends too much time sleeping and not enough time hammering locks, as in an eight-CPU test will often only be utilizing a CPU or two. This commit therefore makes lock_torture_writer() sleep less and hammer more.

Paul E. McKenney committed 12 years ago

Commit da601c61 parent 2f66dbc1 file · +2 −1Browse files

Unified · Split

kernel/locking/locktorture.c+2−1

@@ -219,7 +219,8 @@ static int lock_torture_writer(void *arg) · 218 unmodified lines
219	set_user_nice(current, 19);	219	set_user_nice(current, 19);
220		220
221	do {	221	do {
222	schedule_timeout_uninterruptible(1);	222	if ((torture_random(&rand) & 0xfffff) == 0)
		223	schedule_timeout_uninterruptible(1);
223	cur_ops->writelock();	224	cur_ops->writelock();
224	if (WARN_ON_ONCE(lock_is_write_held))	225	if (WARN_ON_ONCE(lock_is_write_held))
225	lwsp->n_write_lock_fail++;	226	lwsp->n_write_lock_fail++;