linux-kernel - Re: [PATCH V2] kernel/hung_task.c: Introduce sysctl to print all traces when a hung task is detected

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Message-ID: <202003241119.A666E1C694@keescook>
Date:   Tue, 24 Mar 2020 11:20:55 -0700
From:   Kees Cook <keescook@...omium.org>
To:     "Guilherme G. Piccoli" <gpiccoli@...onical.com>
Cc:     Vlastimil Babka <vbabka@...e.cz>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
        mcgrof@...nel.org, yzaikin@...gle.com, tglx@...utronix.de,
        penguin-kernel@...ove.SAKURA.ne.jp, akpm@...ux-foundation.org,
        cocci@...teme.lip6.fr, linux-api@...r.kernel.org,
        kernel@...ccoli.net, randy Dunlap <rdunlap@...radead.org>
Subject: Re: [PATCH V2] kernel/hung_task.c: Introduce sysctl to print all
 traces when a hung task is detected

On Tue, Mar 24, 2020 at 09:45:40AM -0300, Guilherme G. Piccoli wrote:
> Thanks Randy and Vlastimil for the comments. I really liked your
> approach Vlastimil, I agree that we have no reason to not have a generic
> sysctl setting via cmdline mechanism - I'll rework this patch removing
> the kernel parameter (same for other patch I just submitted).

I've been thinking we'll likely want to have a big patch series that
removes all the old "duplicate" boot params and adds some kind of
"alias" mechanism.

Vlastimil, have you happened to keep a list of other "redundant" boot
params you've noticed in the kernel? I bet there are a lot. :)

-- 
Kees Cook