linux-kernel - Re: [PATCH V2] kernel/hung_task.c: Force console verbose before panic

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Date:   Thu, 13 Dec 2018 12:54:26 +0100
From:   Petr Mladek <pmladek@...e.com>
To:     "Liu, Chuansheng" <chuansheng.liu@...el.com>
Cc:     Tetsuo Handa <penguin-kernel@...ove.sakura.ne.jp>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        "akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
        "sergey.senozhatsky@...il.com" <sergey.senozhatsky@...il.com>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "dvyukov@...gle.com" <dvyukov@...gle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2] kernel/hung_task.c: Force console verbose before panic

On Thu 2018-12-13 01:51:22, Liu, Chuansheng wrote:
> Based on patch commit 401c636a0eeb ("kernel/hung_task.c:
> show all hung tasks before panic"), we could get the
> call stack of hung task.
> 
> However, if the console loglevel is not high, we still
> can not see the useful panic information in practice,
> and in most cases users don't set console loglevel to
> high level.
> 
> This patch is to force console verbose before system
> panic, so that the real useful information can be seen
> in the console, instead of being like the following,
> which doesn't have hung task information.
> 
> Signed-off-by: Chuansheng Liu <chuansheng.liu@...el.com>

Makes sense and looks good to me:

Reviewed-by: Petr Mladek <pmladek@...e.com>

Best Regards,
Petr