From: Ralf Baechle <ralf@linux-mips.org>
Date: Thu, 7 Dec 2006 04:40:26 +0000 (-0800)
Subject: [PATCH] futex: remove unneeded barrier
X-Git-Tag: v2.6.20-rc1~145^2^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ccdea2f88b5689f0fd29c3804be43a3acf0311e3;p=pandora-kernel.git

[PATCH] futex: remove unneeded barrier

When disassembling a kernel I found around over 90 sync Instructions from
mb, rmb and wmb calls in the kernel and only few of those make any sense to
me.  So here's the first one - I think the wmb() in kernel/futex.c is not
needed on uniprocessors so should become an smb_wmb().

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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