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

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Message-ID: <20101129230820.GH2182@linux.vnet.ibm.com>
Date:	Mon, 29 Nov 2010 15:08:20 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc:	ltt-dev@...ts.casi.polymtl.ca, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Fix ppc asm typo

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...

							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
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