From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Sun, 2 Mar 2014 12:09:47 +0000 (+0100)
Subject: futex: Allow architectures to skip futex_atomic_cmpxchg_inatomic() test
X-Git-Tag: v3.15-rc1~184^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03b8c7b623c80af264c4c8d6111e5c6289933666;p=pandora-kernel.git

futex: Allow architectures to skip futex_atomic_cmpxchg_inatomic() test

If an architecture has futex_atomic_cmpxchg_inatomic() implemented and there
is no runtime check necessary, allow to skip the test within futex_init().

This allows to get rid of some code which would always give the same result,
and also allows the compiler to optimize a couple of if statements away.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Finn Thain <fthain@telegraphics.com.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: http://lkml.kernel.org/r/20140302120947.GA3641@osiris
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---

Reading git-diff-tree failed