linux-kernel - Re: [PATCH, v2] checkpatch: Warn on code with 6+ tab indentation, remove 80col warning

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Date:	Sun, 05 Feb 2012 08:21:25 -0800
From:	Joe Perches <joe@...ches.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Pekka Enberg <penberg@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Whitcroft <apw@...dowen.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	linux-kernel@...r.kernel.org,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Kees Cook <keescook@...omium.org>, Tejun Heo <tj@...nel.org>,
	Andrew Vagin <avagin@...nvz.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Glauber Costa <glommer@...allels.com>,
	Matt Helsley <matthltc@...ibm.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Vasiliy Kulikov <segoon@...nwall.com>, Valdis.Kletnieks@...edu
Subject: Re: [PATCH, v2] checkpatch: Warn on code with 6+ tab indentation,
 remove 80col warning

On Sun, 2012-02-05 at 12:38 +0100, Ingo Molnar wrote:
> In practice patch submitters take warnings just as seriously.

In practice, that's not necessarily bad.
I do think there should be some line length limit.
80 might be a bit short.

> If it is emitted by the default checkpatch run, it's acted
> upon. That is the human behavior that is a given.

Look at some of the lines in drivers/staging
that have _really_ long lines that would not
get any warning if this were removed.

$ git ls-files "drivers/staging/*.[ch]" | xargs cat | \
  awk '{print length($0),$0}' | sort -rn | head -50

gotta love the first few...

A few lines in arch/x86 might benefit from
some wrapping too.

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