linux-kernel - Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

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Date:	Fri, 4 Apr 2014 11:32:17 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	"Theodore Ts'o" <tytso@....edu>, Joerg Roedel <joro@...tes.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mateusz Guzik <mguzik@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
	Ingo Molnar <mingo@...nel.org>, Mel Gorman <mgorman@...e.de>,
	Kay Sievers <kay@...y.org>
Subject: Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

On Fri, Apr 4, 2014 at 11:21 AM, Andy Lutomirski <luto@...capital.net> wrote:
>
> The other thing I've used /dev/kmsg for is to shove a "I'm starting
> something now" message in.  This is only really necessary because the
> current kernel log timestamps are unusable crap.  (We could fix that,
> hint hint.)

I'd actually love to fix that, but I disagree with the "we could fix
it". There are tons of people who know how to parse them (admittedly
often only to ignore them), so changing the format is not likely to
work.

The good news is that "dmesg -H" does help if you're human. While at
the same time being an example of that very "there are tools that know
about the current horrid format" issue.. D'oh.

             Linus
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