Re: [PATCH 00/50] Add log level to show_stack()

From: Peter Zijlstra <peterz@infradead.org>
To: Dmitry Safonov <dima@arista.com>
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Subject: Re: [PATCH 00/50] Add log level to show_stack()
Date: Wed, 6 Nov 2019 10:20:39 +0100	[thread overview]
Message-ID: <20191106092039.GT4131@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20191106030542.868541-1-dima@arista.com>

On Wed, Nov 06, 2019 at 03:04:51AM +0000, Dmitry Safonov wrote:
> Add log level argument to show_stack().
> Done in three stages:
> 1. Introducing show_stack_loglvl() for every architecture
> 2. Migrating old users with an explicit log level
> 3. Renaming show_stack_loglvl() into show_stack()
> 
> Justification:
> o It's a design mistake to move a business-logic decision
>   into platform realization detail.
> o I have currently two patches sets that would benefit from this work:
>   Removing console_loglevel jumps in sysrq driver [1]
>   Hung task warning before panic [2] - suggested by Tetsuo (but he
>   probably didn't realise what it would involve).
> o While doing (1), (2) the backtraces were adjusted to headers
>   and other messages for each situation - so there won't be a situation
>   when the backtrace is printed, but the headers are missing because
>   they have lesser log level (or the reverse).
> o As the result in (2) plays with console_loglevel for kdb are removed.

I really don't understand that word salad. Why are you doing this?

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