Re: [RFC v2 2/3] drm/i915/pmu: serve global events and support perf stat

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On Wed, Aug 30, 2017 at 05:24:30PM +0000, Rogozhkin, Dmitry V wrote:
> Ok... but they could register for just cpu0. Besides, it looks like on
> Linux cpu0 can't go offline at all at least of x86 architecture. Peter,
> could you, please, clarify the reasoning to register designated readers
> of uncore PMU for few CPUs?

arch/x86/Kconfig:config BOOTPARAM_HOTPLUG_CPU0

means we cannot rely on CPU0 being present, even on x86.
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