linux-kernel - Re: [PATCH 1/3] docs: sysctl/kernel: Add missing bit to panic

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Date:   Tue, 30 Nov 2021 13:09:51 +0800
From:   Feng Tang <feng.tang@...el.com>
To:     "Guilherme G. Piccoli" <gpiccoli@...lia.com>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-doc@...r.kernel.org, mcgrof@...nel.org,
        keescook@...omium.org, yzaikin@...gle.com,
        akpm@...ux-foundation.org, siglesias@...lia.com,
        kernel@...ccoli.net
Subject: Re: [PATCH 1/3] docs: sysctl/kernel: Add missing bit to panic_print

On Tue, Nov 09, 2021 at 05:28:46PM -0300, Guilherme G. Piccoli wrote:
> Commit de6da1e8bcf0 ("panic: add an option to replay all the printk message in buffer")
> added a new bit to the sysctl/kernel parameter "panic_print", but the
> documentation was added only in kernel-parameters.txt, not in the sysctl guide.
> 
> Fix it here by adding bit 5 to sysctl admin-guide documentation.
 
Thanks for the fix!

Reviewed-by: Feng Tang <feng.tang@...el.com>

- Feng

> Cc: Feng Tang <feng.tang@...el.com>
> Fixes: de6da1e8bcf0 ("panic: add an option to replay all the printk message in buffer")
> Signed-off-by: Guilherme G. Piccoli <gpiccoli@...lia.com>
> ---
>  Documentation/admin-guide/sysctl/kernel.rst | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/admin-guide/sysctl/kernel.rst b/Documentation/admin-guide/sysctl/kernel.rst
> index 426162009ce9..70b7df9b081a 100644
> --- a/Documentation/admin-guide/sysctl/kernel.rst
> +++ b/Documentation/admin-guide/sysctl/kernel.rst
> @@ -795,6 +795,7 @@ bit 1  print system memory info
>  bit 2  print timer info
>  bit 3  print locks info if ``CONFIG_LOCKDEP`` is on
>  bit 4  print ftrace buffer
> +bit 5: print all printk messages in buffer
>  =====  ============================================
>  
>  So for example to print tasks and memory info on panic, user can::
> -- 
> 2.33.1