Messages in this thread | | | Date | Sat, 17 Dec 2005 14:38:24 -0800 | From | Richard Henderson <> | Subject | Re: [PATCH 1/19] MUTEX: Introduce simple mutex implementation |
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On Fri, Dec 16, 2005 at 02:53:06PM -0800, David S. Miller wrote: > I'll have to add "put write prefetch in CAS sequences" onto my sparc64 > TODO list :-)
You might consider just beginning your loops like
mov zero, old cas [mem], zero, old
to do the initial read, since old will now contain the contents of the memory, and we havn't changed the memory.
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