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Date: Thu, 15 Sep 2005 02:49:58 +1000
From: Nick Piggin <nickpiggin@yahoo.com.au>
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To: Roman Zippel <zippel@linux-m68k.org>
CC: Linux Kernel Mailing List <Linux-Kernel@vger.kernel.org>,
       Dipankar Sarma <dipankar@in.ibm.com>,
       "David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 5/5] remove HAVE_ARCH_CMPXCHG
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Roman Zippel wrote:
> Hi,
> 
> On Thu, 15 Sep 2005, Nick Piggin wrote:
> 
> 
>>Is there any point in keeping this around?
> 
> 
> Yes, for drivers which want to use it to synchronize with userspace.
> Alternatively it could be changed into a Kconfig definition.
> 

I think it already is. At least, I did grep for it and didn't
see anything.

I think userspace synchronization may be quite a valid use of
atomic cmpxchg, but Kconfig is a far better place to do it than
testing HAVE_ARCH_CMPXCHG.

-- 
SUSE Labs, Novell Inc.

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