Re: [RFT] [SPARC] Emulate cmpxchg like parisc
From: Martin Habets <errandir_news@mph.eclipse.co.uk>
Date: Mon, 28 May 2007 01:07:46 +0100
> On Sat, May 26, 2007 at 03:59:21PM -0700, David Miller wrote:
> > Alternatively we can have a KCONFIG variable with reversed
> > logic, like "EMULATED_CMPXCHG" which only the atomically
> > challenged platforms need to set.
>
> Like this idea, but if we're not going to build DRM I see no
> point adding the cmpxchg emulation to sparc32. Maybe "NOARCH_CMPXCHG"
> would be better?
It is likely that we are going to have generic users of cmpxchg() in
the kernel in the future (I think the -rt patch set has some which are
hard to get rid of) at which point we'd probably put the emulated
cmpxchg() in there anyways.
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