From: Anton Blanchard <anton@samba.org>
Date: Tue, 18 Jan 2011 10:44:04 +0000 (+1100)
Subject: powerpc, perf: Fix frequency calculation for overflowing counters (FSL version)
X-Git-Tag: v2.6.38-rc3~68^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8c8a9b25b5de3f1eeac721cf34f4379e56d5d694;p=pandora-kernel.git

powerpc, perf: Fix frequency calculation for overflowing counters (FSL version)

When fixing the frequency calculations for perf on powerpc I
forgot to fix the FSL version.

If we dont set event->hw.last_period the frequency to period
calculations in perf go haywire and we continually
throttle/unthrottle the PMU.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20110118214404.2f42e634@kryten>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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