From: Robert Richter <robert.richter@amd.com>
Date: Wed, 29 Apr 2009 10:47:22 +0000 (+0200)
Subject: perf_counter, x86: return raw count with x86_perf_counter_update()
X-Git-Tag: v2.6.31-rc1~383^2~330
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4b7bfd0d276da3a006d37e85d3cf900d7a14ae2a;p=pandora-kernel.git

perf_counter, x86: return raw count with x86_perf_counter_update()

To check on AMD cpus if a counter overflows, the upper bit of the raw
counter value must be checked. This value is already internally
available in x86_perf_counter_update(). Now, the value is returned so
that it can be used directly to check for overflows.

[ Impact: micro-optimization ]

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Paul Mackerras <paulus@samba.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241002046-8832-26-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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