From: Peter Zijlstra <peterz@infradead.org>
Date: Mon, 4 May 2009 16:47:44 +0000 (+0200)
Subject: perf_counter: x86: fixup nmi_watchdog vs perf_counter boo-boo
X-Git-Tag: v2.6.31-rc1~383^2~305
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ba77813a2a22d631fe5bc0bf1ec0d11350544b70;p=pandora-kernel.git

perf_counter: x86: fixup nmi_watchdog vs perf_counter boo-boo

Invert the atomic_inc_not_zero() test so that we will indeed detect the
first activation.

Also rename the global num_counters, since its easy to confuse with
x86_pmu.num_counters.

[ Impact: fix non-working perfcounters on AMD CPUs, cleanup ]

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1241455664.7620.4938.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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