From: Benjamin LaHaise <bcrl@kvack.org>
Date: Tue, 3 Jan 2006 22:10:46 +0000 (-0800)
Subject: [AF_UNIX]: Convert to use a spinlock instead of rwlock
X-Git-Tag: v2.6.16-rc1~474^2~22^2~9^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd19f329a32bdc4eb07885e0b3889567cfe00aa7;p=pandora-kernel.git

[AF_UNIX]: Convert to use a spinlock instead of rwlock

From: Benjamin LaHaise <bcrl@kvack.org>

In af_unix, a rwlock is used to protect internal state.  At least on my
P4 with HT it is faster to use a spinlock due to the simpler memory
barrier used to unlock.  This patch raises bw_unix to ~690K/s.

Signed-off-by: David S. Miller <davem@davemloft.net>
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