linux-kernel - [PATCH 5/5] rcutorture: Print only one rtort_pipe

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Message-Id: <20250508234502.1996788-5-paulmck@kernel.org>
Date: Thu,  8 May 2025 16:45:02 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: rcu@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	kernel-team@...a.com,
	rostedt@...dmis.org,
	"Paul E. McKenney" <paulmck@...nel.org>
Subject: [PATCH 5/5] rcutorture: Print only one rtort_pipe_count splat

The rcu_torture_writer() function scans the memory blocks after a stutter
(or forced idle) interval, complaining about any that have not passed
through ten grace periods since the start of the stutter interval.
But one splat suffices, so this commit therefore stops at the first splat.

Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 kernel/rcu/rcutorture.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 62f082e24d3b9..2699f47557bf7 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -1781,6 +1781,7 @@ rcu_torture_writer(void *arg)
 						cur_ops->gp_kthread_dbg();
 					WARN(1, "%s: rtort_pipe_count: %d\n", __func__, rcu_tortures[i].rtort_pipe_count);
 					rcu_ftrace_dump(DUMP_ALL);
+					break;
 				}
 		if (stutter_waited)
 			sched_set_normal(current, oldnice);
-- 
2.40.1