Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   John Ogness <john.ogness@linutronix.de>
To:     "Paul E. McKenney" <paulmck@kernel.org>, rcu@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, kernel-team@fb.com,
        rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>
Subject: Re: [PATCH rcu 11/12] torture: Flush printk() buffers before
 powering off
In-Reply-To: <20220620225817.3843106-11-paulmck@kernel.org>
References: <20220620225814.GA3842995@paulmck-ThinkPad-P17-Gen-1>
 <20220620225817.3843106-11-paulmck@kernel.org>
Date:   Tue, 21 Jun 2022 01:29:04 +0206
Message-ID: <8735fyc42v.fsf@jogness.linutronix.de>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

On 2022-06-20, "Paul E. McKenney" <paulmck@kernel.org> wrote:
> 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>

Reviewed-by: John Ogness <john.ogness@linutronix.de>