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authorNick Piggin <npiggin@suse.de>2008-11-11 17:54:15 +0000
committerPaul Mackerras <paulus@samba.org>2008-11-19 16:04:58 +1100
commitae564c63b8311fa73c21e456e00dba1f4b1ff6bc (patch)
tree743ed995f8718d465c8008a61755ea47feb73f6e /drivers/of
parent957ab07b44d839ee8267e827fc4e8f1853798f57 (diff)
powerpc: Optimise mutex
This implements an optimised mutex fastpath for powerpc, making use of acquire and release barrier semantics. This takes the mutex lock+unlock benchmark from 203 to 173 cycles on a G5. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
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