From: David S. Miller <davem@davemloft.net>
Date: Tue, 5 Jan 2010 07:16:03 +0000 (-0800)
Subject: sparc64: Fix Niagara2 perf event handling.
X-Git-Tag: v2.6.33-rc3~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e04ed38d4e0cd32141f723560efcc8252b0241e2;p=pandora-kernel.git

sparc64: Fix Niagara2 perf event handling.

For chips like Niagara2 that have true overflow indications
in the %pcr (which we don't actually need and don't use)
the interrupt signal persists until the overflow bits are
cleared by an explicit %pcr write.

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