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

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Date:	Thu, 27 May 2010 13:42:25 +0200
From:	Nicolas Palix <npalix@...u.dk>
To:	Julia Lawall <julia@...u.dk>
Cc:	"Roedel, Joerg" <Joerg.Roedel@....com>,
	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 Thursday 27 May 2010 13:17:58 Julia Lawall wrote:
> On Thu, 27 May 2010, Roedel, Joerg wrote:
> 
> > 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?
> 
> We have submitted and received some feedback on an initial version of 
> this, but I'm not completely sure of the current status.

You can see the latest feedback we get at
http://lkml.org/lkml/2010/5/10/257

The initial submission and its comments are at
http://lkml.org/lkml/2010/4/26/269

> 
> julia
> --
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-- 
Nicolas Palix
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Tel: (+33) 6 81 07 91 72
Web: http://www.diku.dk/~npalix/
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