From: Will Deacon <will.deacon@arm.com>
Date: Wed, 9 Oct 2013 16:17:18 +0000 (+0100)
Subject: ARM: 7853/1: cmpxchg: implement cmpxchg64_relaxed
X-Git-Tag: v3.13-rc1~103^2~2^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=775ebcc16b940ebf61bf54d6054a5e639f68b9d6;p=pandora-kernel.git

ARM: 7853/1: cmpxchg: implement cmpxchg64_relaxed

This patch introduces cmpxchg64_relaxed for arm, which performs a 64-bit
cmpxchg operation without barrier semantics. cmpxchg64_local is updated
to use the new operation.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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