linux-kernel - Re: [PATCH 6/17] arch/x86/kernel: Add missing spin

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Date:	Thu, 27 May 2010 13:11:36 +0200
From:	"Roedel, Joerg" <Joerg.Roedel@....com>
To:	Julia Lawall <julia@...u.dk>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH 6/17] arch/x86/kernel: Add missing spin_unlock

On Wed, May 26, 2010 at 11:55:59AM -0400, Julia Lawall wrote:
> The semantic match that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> expression E1;
> @@
> 
> * spin_lock(E1,...);
>   <+... when != E1
>   if (...) {
>     ... when != E1
> *   return ...;
>   }
>   ...+>
> * spin_unlock(E1,...);
> // </smpl>

Btw, I think it would be great to have a collection of these semantic
match scripts in the kernel repository together with a build target to
run these scripts over the kernel sources (like the cscope target).
Opinions?

	Joerg


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