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perf_counter: x86: fixup nmi_watchdog vs perf_counter boo-boo
authorPeter Zijlstra <peterz@infradead.org>
Mon, 4 May 2009 16:47:44 +0000 (18:47 +0200)
committerIngo Molnar <mingo@elte.hu>
Mon, 4 May 2009 17:30:29 +0000 (19:30 +0200)
commitba77813a2a22d631fe5bc0bf1ec0d11350544b70
tree09fd04be43e2c221aff774bf95e7bfb4d213bb17tree | snapshot (tar.gz zip)
parentb82914ce33146186d554b0f5c41e4e13693614cecommit | diff
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>
arch/x86/kernel/cpu/perf_counter.c diff | blob | blame | history