From: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Date: Thu, 18 Dec 2014 02:39:54 +0000 (-0800)
Subject: rcutorture: Add more diagnostics in rcu_barrier() test failure case
X-Git-Tag: v4.14-rc1~5883^2^2~1^6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7602de4af192b1527767538454557cb7564bae60;p=platform%2Fkernel%2Flinux-rpi.git

rcutorture: Add more diagnostics in rcu_barrier() test failure case

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
---

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 24142c2..30d42aa 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1427,6 +1427,9 @@ static int rcu_torture_barrier(void *arg)
 		cur_ops->cb_barrier(); /* Implies smp_mb() for wait_event(). */
 		if (atomic_read(&barrier_cbs_invoked) != n_barrier_cbs) {
 			n_rcu_torture_barrier_error++;
+			pr_err("barrier_cbs_invoked = %d, n_barrier_cbs = %d\n",
+			       atomic_read(&barrier_cbs_invoked),
+			       n_barrier_cbs);
 			WARN_ON_ONCE(1);
 		}
 		n_barrier_successes++;