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    SubjectRe: [PATCH] WorkStruct: Implement generic UP cmpxchg() where an arch doesn't support it
    On Wed, Dec 06, 2006 at 11:05:22AM -0800, Linus Torvalds wrote:
    > On Wed, 6 Dec 2006, Christoph Lameter wrote:
    > >
    > > I'd really appreciate a cmpxchg that is generically available for
    > > all arches. It will allow lockless implementation for various performance
    > > criticial portions of the kernel.
    > I suspect ARM may have been the last one without one, no?

    No. sparc32 doesn't have one, for instance.
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