From: Will Deacon <will.deacon@arm.com>
Date: Fri, 2 May 2014 16:06:19 +0000 (+0100)
Subject: ARM: 8047/1: rwsem: use asm-generic rwsem implementation
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~91^2~13^2~1^4~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a87411b649c6082aebea613e84dcb3f174f72fb;p=pandora-kernel.git

ARM: 8047/1: rwsem: use asm-generic rwsem implementation

asm-generic offers an atomic-add based rwsem implementation, which
can avoid the need for heavier, spinlock-based synchronisation on the
fast path.

This patch makes use of the optimised implementation for ARM CPUs.

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