From: Will Deacon <will.deacon@arm.com>
Date: Wed, 9 Oct 2013 14:54:28 +0000 (+0100)
Subject: arm64: cmpxchg: implement cmpxchg64_relaxed
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~54^2~38
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cf10b79a7d88edc689479af989b3a88e9adf07ff;p=pandora-kernel.git

arm64: cmpxchg: implement cmpxchg64_relaxed

This patch introduces cmpxchg64_relaxed for arm64 using the existing
cmpxchg_local macro, which performs a cmpxchg operation (up to 64 bits)
without barrier semantics.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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