[PATCH tip/core/rcu 19/21] rcutorture: Dump trace buffer for callback pipe drain failures
From: Paul E. McKenney
Date: Thu May 30 2019 - 11:21:14 EST
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx>
---
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