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SubjectRe: [PATCH 3/3] WorkStruct: Use direct assignment rather than cmpxchg()
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From: David Howells <dhowells@redhat.com>
Date: Thu, 07 Dec 2006 21:16:03 +0000

> I don't know that sparc32 can do conditional instructions for
> example. If we force this assumption it becomes a potential
> limitation on the archs we can support. OTOH, it may be that every
> arch that supports SMP and has to emulate bitops with spinlocks also
> supports conditional stores; but I don't know that.

Sparc32 has normal branches but no conditional instruction execution.
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