linux-kernel - Re: [PATCH v2] Docs: printk: add 'console=null|""' to admin/kernel-parameters

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Message-ID: <YhOmG9MxXMeAL+Db@alley>
Date:   Mon, 21 Feb 2022 15:47:55 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     linux-kernel@...r.kernel.org,
        Sergey Senozhatsky <senozhatsky@...omium.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        John Ogness <john.ogness@...utronix.de>,
        Jonathan Corbet <corbet@....net>, linux-doc@...r.kernel.org
Subject: Re: [PATCH v2] Docs: printk: add 'console=null|""' to
 admin/kernel-parameters

On Wed 2022-02-16 12:37:45, Randy Dunlap wrote:
> Tell about 'console=null|""' and how to use it.
> 
> It can be helpful to set (enable) CONFIG_NULL_TTY so that the ttynull
> driver is available. This avoids problems with stdin/stdout/stderr of
> the init process. Howevere, CONFIG_NULL_TTY cannot be enabled by default
> because it can be used by mistake [see commit a91bd6223ecd ("Revert
> "init/console: Use ttynull as a fallback when there is no console").]
> 
> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>

The patch is committed in printk/linux.git, branch for-5.18.

Best Regards,
Petr