From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 11 Sep 2013 14:34:04 +0000 (+0200)
Subject: s390/atomic: make use of interlocked-access facility 1 instructions
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~58^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=75287430b4af7c22080d02b8cfc8344c4ecafc21;p=pandora-kernel.git

s390/atomic: make use of interlocked-access facility 1 instructions

Same as for bitops: make use of the interlocked-access facility 1
instructions which allow to atomically update storage locations
without a compare-and-swap loop.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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