From: Richard Henderson <rth@twiddle.net>
Date: Thu, 11 Jul 2013 14:42:14 +0000 (-0700)
Subject: alpha: Improve atomic_add_unless
X-Git-Tag: v3.11-rc3~25^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6da7539734d4e0f5caeea1e0efbb74d7b83db1ca;p=pandora-kernel.git

alpha: Improve atomic_add_unless

Use ll/sc loops instead of C loops around cmpxchg.
Update the atomic64_add_unless block comment to match the code.

Reviewed-and-Tested-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
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