Commit-ID: da601c63fd3a3e6c30f85eefd5ee46397b5b439d
Gitweb: http://git.kernel.org/tip/da601c63fd3a3e6c30f85eefd5ee46397b5b439d
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Wed, 26 Feb 2014 12:14:51 -0800
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Tue, 13 May 2014 17:03:01 -0700
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.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/locking/locktorture.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c
index f26b1a1..b0d3e3c 100644
--- a/kernel/locking/locktorture.c
+++ b/kernel/locking/locktorture.c
@@ -219,7 +219,8 @@ static int lock_torture_writer(void *arg)
set_user_nice(current, 19);
do {
- schedule_timeout_uninterruptible(1);
+ if ((torture_random(&rand) & 0xfffff) == 0)
+ schedule_timeout_uninterruptible(1);
cur_ops->writelock();
if (WARN_ON_ONCE(lock_is_write_held))
lwsp->n_write_lock_fail++;
--
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