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

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Message-ID: <4F9D4F6E.4070106@redhat.com>
Date:	Sun, 29 Apr 2012 11:25:50 -0300
From:	Mauro Carvalho Chehab <mchehab@...hat.com>
To:	Borislav Petkov <bp@...64.org>
CC:	Joe Perches <joe@...ches.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

Em 28-04-2012 05:52, Borislav Petkov escreveu:
> On Fri, Apr 27, 2012 at 01:07:38PM -0300, Mauro Carvalho Chehab wrote:
>> Yes. This is a common issue at the EDAC core: on several places, it calls the
>> edac debug macros (DEBUGF0...DEBUGF4) passing a __func__ as an argument, while
>> the debug macros already handles that. I suspect that, in the past, the __func__
>> were not at the macros, but some patch added it there, and forgot to fix the
>> occurrences of its call.
> 
> The patch that added it is d357cbb445208 and you reviewed it.

And you wrote the patch that caused it.

> 
>> This is something that needs to be reviewed at the entire EDAC core (and likely
>> at the drivers).
> 
> Looks like a job for a newbie to get her/his feet wet with kernel work.

> 
>> I opted to not touch on this at the existing debug logic, as I think that the
>> better is to address all those issues on one separate patch, after fixing the
>> EDAC core bugs.
> 
> No,
> 
> you simply need to remove the __func__ argument in your newly added debug call:
> 
>                 debugf2("%s: %d: dimm%zd (%d:%d:%d): row %d, chan %d\n", __func__,
>                         i, (dimm - mci->dimms),
>                         pos[0], pos[1], pos[2], row, chn);
> 
> And while you're at it, remove the rest of the __func__ arguments from
> your newly added debugfX calls.

A single patch fixing this everywhere at drivers/edac is better and clearer than adding 
an unrelated fix on this patch. This is already complex enough to add more unrelated
things there.

Also, a simple perl/coccinelle script can replace all such __func__ occurrences 
on one shot.

Regards,
Mauro

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