[2/2] reboot: flush printk buffers before final shutdown

Message ID	a64dd2c6829f07caae9e93c37d5a2bcfc3dbd6e9.1712051763.git.esben@geanix.com
State	New
Headers	show Received: from www530.your-server.de (www530.your-server.de [188.40.30.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED45559151 for <linux-rt-users@vger.kernel.org>; Tue, 2 Apr 2024 10:13:23 +0000 (UTC) From: Esben Haabendal <esben@geanix.com> To: linux-rt-users@vger.kernel.org, Petr Mladek <pmladek@suse.com>, Steven Rostedt <rostedt@goodmis.org>, John Ogness <john.ogness@linutronix.de>, Sergey Senozhatsky <senozhatsky@chromium.org> Cc: =?utf-8?q?Martin_Hundeb=C3=B8ll?= <martin@geanix.com> Subject: [PATCH 2/2] reboot: flush printk buffers before final shutdown Date: Tue, 2 Apr 2024 12:13:21 +0200 Message-ID: <a64dd2c6829f07caae9e93c37d5a2bcfc3dbd6e9.1712051763.git.esben@geanix.com> In-Reply-To: <d65ca57567e245aa99a944cefc195f2bc6974384.1712051763.git.esben@geanix.com> References: <d65ca57567e245aa99a944cefc195f2bc6974384.1712051763.git.esben@geanix.com> Precedence: bulk MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Message-ID: <20240402101321.9Rs841l6bGOhscIw75U071GQKNibE3wH6Q5WJp-TQKk@z>
Series	[1/2] printk: export pr_flush() \| expand [1/2] printk: export pr_flush() [2/2] reboot: flush printk buffers before final shutdown

Message ID

a64dd2c6829f07caae9e93c37d5a2bcfc3dbd6e9.1712051763.git.esben@geanix.com

State

New

Headers

From: Esben Haabendal <esben@geanix.com>
To: linux-rt-users@vger.kernel.org,
	Petr Mladek <pmladek@suse.com>,
	Steven Rostedt <rostedt@goodmis.org>,
	John Ogness <john.ogness@linutronix.de>,
	Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: =?utf-8?q?Martin_Hundeb=C3=B8ll?= <martin@geanix.com>
Subject: [PATCH 2/2] reboot: flush printk buffers before final shutdown
Date: Tue,  2 Apr 2024 12:13:21 +0200
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Series

[1/2] printk: export pr_flush() | expand

Commit Message

Esben Haabendal April 2, 2024, 10:13 a.m. UTC

From: Martin Hundebøll <martin@geanix.com>

Make sure printed messages are in fact printed before putting the system
down.

Signed-off-by: Martin Hundebøll <martin@geanix.com>
---
 kernel/reboot.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/reboot.c b/kernel/reboot.c
index 22c16e2564cc..e3fa5613257f 100644
--- a/kernel/reboot.c
+++ b/kernel/reboot.c
@@ -283,6 +283,7 @@  void kernel_restart(char *cmd)
 	else
 		pr_emerg("Restarting system with command '%s'\n", cmd);
 	kmsg_dump(KMSG_DUMP_SHUTDOWN);
+	pr_flush(1000, false);
 	machine_restart(cmd);
 }
 EXPORT_SYMBOL_GPL(kernel_restart);

[2/2] reboot: flush printk buffers before final shutdown

Commit Message

Patch