linux-kernel - Re: [PATCH printk v2 21/38] serial: kgdboc: use srcu console list iterator

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Message-ID: <Y1AfgdmKpX1ePNST@kroah.com>
Date:   Wed, 19 Oct 2022 18:02:09 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     John Ogness <john.ogness@...utronix.de>
Cc:     Petr Mladek <pmladek@...e.com>,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-kernel@...r.kernel.org,
        Jason Wessel <jason.wessel@...driver.com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Douglas Anderson <dianders@...omium.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        kgdb-bugreport@...ts.sourceforge.net, linux-serial@...r.kernel.org
Subject: Re: [PATCH printk v2 21/38] serial: kgdboc: use srcu console list
 iterator

On Wed, Oct 19, 2022 at 05:01:43PM +0206, John Ogness wrote:
> Use srcu console list iteration for safe console list traversal.
> 
> Note that configure_kgdboc() still requires the console_lock in
> order to ensure that no console is in its write() callback when
> its direct() callback is called. Add comments to clarify this.
> 
> Signed-off-by: John Ogness <john.ogness@...utronix.de>

Reviewed-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>