From: "Paul E. McKenney" <paulmck@linux.ibm.com>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, mingo@kernel.org,
jiangshanlai@gmail.com, dipankar@in.ibm.com,
akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org,
"Paul E. McKenney" <paulmck@linux.ibm.com>
Subject: [PATCH tip/core/rcu 19/21] rcutorture: Dump trace buffer for callback pipe drain failures
Date: Thu, 30 May 2019 08:17:10 -0700 [thread overview]
Message-ID: <20190530151712.1612-19-paulmck@linux.ibm.com> (raw)
In-Reply-To: <20190530151650.GA422@linux.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
---
kernel/rcu/rcutorture.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 6b803fb2f7ca..89be0f492f78 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1060,8 +1060,10 @@ rcu_torture_writer(void *arg)
for (i = 0; i < ARRAY_SIZE(rcu_tortures); i++)
if (list_empty(&rcu_tortures[i].rtort_free) &&
rcu_access_pointer(rcu_torture_current) !=
- &rcu_tortures[i])
+ &rcu_tortures[i]) {
+ rcu_ftrace_dump(DUMP_ALL);
WARN(1, "%s: rtort_pipe_count: %d\n", __func__, rcu_tortures[i].rtort_pipe_count);
+ }
} while (!torture_must_stop());
/* Reset expediting back to unexpedited. */
if (expediting > 0)
--
2.17.1
next prev parent reply other threads:[~2019-05-30 15:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-30 15:16 [PATCH tip/core/rcu 0/21] Torture-test updates for v5.3 Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 01/21] rcutorture: Select from only online CPUs Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 02/21] rcutorture: Add cpu0 to the set of CPUs to add jitter Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 03/21] rcutorture: Add cond_resched() to forward-progress free-up loop Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 04/21] rcutorture: Fix stutter_wait() return value and freelist checks Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 05/21] torture: Allow inter-stutter interval to be specified Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 06/21] torture: Make kvm-find-errors.sh and kvm-recheck.sh provide exit status Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 07/21] rcutorture: Provide rudimentary Makefile Paul E. McKenney
2019-05-30 15:16 ` [PATCH tip/core/rcu 08/21] rcutorture: Exempt tasks RCU from timely draining of grace periods Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 09/21] rcutorture: Exempt TREE01 from forward-progress testing Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 10/21] rcutorture: Give the scheduler a chance on PREEMPT && NO_HZ_FULL kernels Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 11/21] rcutorture: Halt forward-progress checks at end of run Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 12/21] rcutorture: Add trivial RCU implementation Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 13/21] rcutorture: Tweak kvm options Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 14/21] torture: Capture qemu output Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 15/21] torture: Add function graph-tracing cheat sheet Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 16/21] torture: Run kernel build in source directory Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 17/21] torture: Make --cpus override idleness calculations Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 18/21] torture: Add --trust-make to suppress "make clean" Paul E. McKenney
2019-05-30 15:17 ` Paul E. McKenney [this message]
2019-05-30 15:17 ` [PATCH tip/core/rcu 20/21] torture: Suppress propagating trace_printk() warning Paul E. McKenney
2019-05-30 15:17 ` [PATCH tip/core/rcu 21/21] rcutorture: Upper case solves the case of the vanishing NULL pointer Paul E. McKenney
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