From: Dimitri Sivanich <sivanich@sgi.com>
Date: Fri, 22 Jan 2010 15:41:40 +0000 (-0600)
Subject: x86, UV: Fix RTC latency bug by reading replicated cachelines
X-Git-Tag: v2.6.33-rc7~53^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aca3bb5910119d4cf6c28568a642582efb4cc14a;p=pandora-kernel.git

x86, UV: Fix RTC latency bug by reading replicated cachelines

For SGI UV node controllers (HUB) rev 2.0 or greater, use
replicated cachelines to read the RTC timer.  This optimization
allows faster simulataneous reads from a given socket.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
Cc: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20100122154140.GB4975@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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