linux-kernel - Re: checkpatch and kernel/sched.c

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Message-ID: <20071001104406.GC15488@elte.hu>
Date:	Mon, 1 Oct 2007 12:44:06 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Andy Whitcroft <apw@...dowen.org>, linux-kernel@...r.kernel.org
Subject: Re: checkpatch and kernel/sched.c


* Andrew Morton <akpm@...ux-foundation.org> wrote:

> > > WARNING: braces {} are not necessary for single statement blocks
> > > #5706: FILE: home/apw/git/linux-2.6/kernel/sched.c:5703:
> > > +	if (parent->groups == parent->groups->next) {
> > > +		pflags &= ~(SD_LOAD_BALANCE |
> > > +				SD_BALANCE_NEWIDLE |
> > > +				SD_BALANCE_FORK |
> > > +				SD_BALANCE_EXEC |
> > > +				SD_SHARE_CPUPOWER |
> > > +				SD_SHARE_PKG_RESOURCES);
> > > +	}
> > > 
> > > Ok, this one is "correct" at least for the rules as I have them.
> > > Perhaps the message should not be emitted for very long blocks?
> > 
> > If a statement is not single-line, then braces _are_ fine. Where does 
> > CodingStyle say that it's not fine?
> 
> I'd disagree with checkpatch there.  Again, it might be hard to fix.  
> Wanna rename it to checkpatch-and-suggest-stuff-to-think-about.pl?

i think checkpatch.pl is quite close to its most useful purpose and 
role: that of a reliable tool that i can use in an automated fashion 
too, with only very rare false positive - and not the current 50%-80% 
false positives rate. (And i'm fighting hard for Andy to realize the 
true scope and purpose of this script ;-)

	Ingo
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