From: Christoph Lameter <clameter@engr.sgi.com>
Date: Thu, 2 Mar 2006 10:54:35 +0000 (-0800)
Subject: [PATCH] time_interpolator: Use readq_relaxed() instead of readq().
X-Git-Tag: v2.6.16-rc6~127
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=685db65e422bfa523b8a9dacb5a658b42b254f05;p=pandora-kernel.git

[PATCH] time_interpolator: Use readq_relaxed() instead of readq().

On some platforms readq performs additional work to make sure I/O is done
in a coherent way.  This is not needed for time retrieval as done by the
time interpolator.  So we can use readq_relaxed instead which will improve
performance.

It affects sparc64 and ia64 only.  Apparently it makes a significant
difference on ia64.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: john stultz <johnstul@us.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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