From: Nick Piggin <npiggin@suse.de>
Date: Tue, 11 Nov 2008 17:54:15 +0000 (+0000)
Subject: powerpc: Optimise mutex
X-Git-Tag: v2.6.29-rc1~574^2~114
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae564c63b8311fa73c21e456e00dba1f4b1ff6bc;p=pandora-kernel.git

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>
---

Reading git-diff-tree failed