linux-kernel - Re: [PATCH EDACv16 1/2] edac: Change internal representation to work with layers

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Date:	Fri, 27 Apr 2012 17:12:30 +0200
From:	Borislav Petkov <bp@...64.org>
To:	Joe Perches <joe@...ches.com>
Cc:	Borislav Petkov <bp@...64.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Linux Edac Mailing List <linux-edac@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Aristeu Rozanski <arozansk@...hat.com>,
	Doug Thompson <norsk5@...oo.com>,
	Mark Gross <mark.gross@...el.com>,
	Jason Uhlenkott <juhlenko@...mai.com>,
	Tim Small <tim@...tersideup.com>,
	Ranganathan Desikan <ravi@...ztechnologies.com>,
	"Arvind R." <arvino55@...il.com>, Olof Johansson <olof@...om.net>,
	Egor Martovetsky <egor@...emi.com>,
	Chris Metcalf <cmetcalf@...era.com>,
	Michal Marek <mmarek@...e.cz>, Jiri Kosina <jkosina@...e.cz>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Hitoshi Mitake <h.mitake@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Niklas Söderlund 
	<niklas.soderlund@...csson.com>,
	Shaohui Xie <Shaohui.Xie@...escale.com>,
	Josh Boyer <jwboyer@...il.com>, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH EDACv16 1/2] edac: Change internal representation to work
 with layers

On Fri, Apr 27, 2012 at 10:11:35AM -0400, Joe Perches wrote:
> > > -extern struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
> > > -					  unsigned nr_chans, int edac_index);
> > > +struct mem_ctl_info *edac_mc_alloc(unsigned sz_pvt, unsigned nr_csrows,
> > > +				   unsigned nr_chans, int edac_index);
> > 
> > Why not "extern"?
> 
> Using extern function prototypes in .h files
> isn't generally necessary nor is extern the
> more common kernel style.

Searching for it, there's this discussion, for example:
http://gcc.gnu.org/ml/gcc/2009-04/msg00812.html

Maybe we should put a small note in Documentation/CodingStyle what the
kernel preference is and hold people to it.

-- 
Regards/Gruss,
Boris.

Advanced Micro Devices GmbH
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