Michael Ellerman 382b9efb7b powerpc/perf: Don't enable if we have zero events ...

commit 4ea355b536 upstream.

In power_pmu_enable() we still enable the PMU even if we have zero
events. This should have no effect but doesn't make much sense. Instead
just return after telling the hypervisor that we are not using the PMCs.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2013-07-25 14:07:22 -07:00

44 KiB

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