linux-kernel - Re: [PATCH] Fix ppc asm typo

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Message-ID: <20101129231156.GA648@Krystal>
Date:	Mon, 29 Nov 2010 18:11:56 -0500
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	ltt-dev@...ts.casi.polymtl.ca, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix ppc asm typo

* Paul E. McKenney (paulmck@...ux.vnet.ibm.com) wrote:
> On Mon, Nov 29, 2010 at 05:52:20PM -0500, Mathieu Desnoyers wrote:
> > Hi Paul,
> > 
> > This patch has already been merged by me in the userspace RCU library:
> > 
> > commit e72f49371b233637eaf143265a73c7322d0710fd
> > Author: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> > Date:   Wed Sep 23 03:09:59 2009 -0400
> > 
> >     ppc atomic: Fix asm format.
> >     
> >     Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> >     Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
> > 
> > It's therefore already integrated in the current releases.
> 
> Hmmm...  I wonder why v0.5.2 got me a compiler error, then...

Maybe you did a make install that got the headers installed system-wide, and the
search order is wrong ? (just a thought)

Did you build 0.5.2 from the tarballs or from the git repo ?

Thanks,

Mathieu

> 
> 							Thanx, Paul
> 
> > Thanks,
> > 
> > Mathieu
> > 
> > 
> > * Paul E. McKenney (paulmck@...ux.vnet.ibm.com) wrote:
> > > Fix ppc asm typo.
> > > 
> > > Signed-off-by: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
> > > 
> > > diff --git a/urcu/uatomic_arch_ppc.h b/urcu/uatomic_arch_ppc.h
> > > index 426b0f2..bb74934 100644
> > > --- a/urcu/uatomic_arch_ppc.h
> > > +++ b/urcu/uatomic_arch_ppc.h
> > > @@ -133,7 +133,7 @@ unsigned long _uatomic_cmpxchg(void *addr, unsigned long old,
> > >  			"bne- 1b\n"	 	/* retry if lost reservation */
> > >  			"isync\n"
> > >  		"2:\n"
> > > -				: "=&r"(old_val),
> > > +				: "=&r"(old_val)
> > >  				: "r"(addr), "r"((unsigned long)_new),
> > >  				  "r"((unsigned long)old)
> > >  				: "memory", "cc");
> > 
> > -- 
> > Mathieu Desnoyers
> > Operating System Efficiency R&D Consultant
> > EfficiOS Inc.
> > http://www.efficios.com

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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