From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@fb.com,
rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>,
John Ogness <john.ogness@linutronix.de>
Subject: [PATCH rcu 11/12] torture: Flush printk() buffers before powering off
Date: Mon, 20 Jun 2022 15:58:16 -0700 [thread overview]
Message-ID: <20220620225817.3843106-11-paulmck@kernel.org> (raw)
In-Reply-To: <20220620225814.GA3842995@paulmck-ThinkPad-P17-Gen-1>
The rcutorture test suite produces quite a bit of console output
at the end of a test. This means that the new printk() kthreads
are likely to be in the process of flushing output at the time of
the torture_shutdown() function's call to kernel_power_off().
This commit therefore invokes pr_flush(1000, true) to flush this
pending console output before invoking kernel_power_off().
Fixes: 8e274732115f ("printk: extend console_lock for per-console locking")
Cc: John Ogness <john.ogness@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
kernel/torture.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/kernel/torture.c b/kernel/torture.c
index 789aeb0e1159c..6d7b282fbb5f8 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -651,6 +651,7 @@ static int torture_shutdown(void *arg)
VERBOSE_TOROUT_STRING("No torture_shutdown_hook(), skipping.");
if (ftrace_dump_at_shutdown)
rcu_ftrace_dump(DUMP_ALL);
+ pr_flush(1000, true);
kernel_power_off(); /* Shut down the system. */
return 0;
}
--
2.31.1.189.g2e36527f23
next prev parent reply other threads:[~2022-06-20 23:00 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-20 22:58 [PATCH rcu 0/12] Torture-test updates for v5.20 Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 01/12] torture: Make kvm-remote.sh announce which system is being waited on Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 02/12] rcu/torture: Change order of warning and trace dump Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 03/12] rcutorture: Simplify rcu_torture_read_exit_child() loop Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 04/12] rcutorture: Fix memory leak in rcu_test_debug_objects() Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 05/12] torture: Adjust to again produce debugging information Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 06/12] rcutorture: Make failure indication note reader-batch overflow Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 07/12] rcu/rcuscale: Fix smp_processor_id()-in-preemptible warnings Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 08/12] torture: Create kvm-check-branches.sh output in proper location Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 09/12] rcutorture: Fix ksoftirqd boosting timing and iteration Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 10/12] rcutorture: Handle failure of memory allocation functions Paul E. McKenney
2022-06-20 22:58 ` Paul E. McKenney [this message]
2022-06-20 23:23 ` [PATCH rcu 11/12] torture: Flush printk() buffers before powering off John Ogness
2022-06-20 23:28 ` Paul E. McKenney
2022-06-21 8:09 ` John Ogness
2022-06-21 18:13 ` Paul E. McKenney
2022-06-21 20:52 ` John Ogness
2022-06-21 21:01 ` Paul E. McKenney
2022-06-20 22:58 ` [PATCH rcu 12/12] refscale: Convert test_lock spinlock to raw_spinlock Paul E. McKenney
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20220620225817.3843106-11-paulmck@kernel.org \
--to=paulmck@kernel.org \
--cc=john.ogness@linutronix.de \
--cc=kernel-team@fb.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rcu@vger.kernel.org \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox