On Tuesday 21 Jan 2020 at 10:10:16 (+0100), Dietmar Eggemann wrote:

True. But then we hard-code that a CPU device performance domain can
only be a frequency domain (which is true today).

The task scheduler (build_perf_domains()) and thermal are already using
cpufreq_cpu_get() to access the cpufreq policy. Now the EM framework
would too for CPU devices. I assume that could work with a couple of
adaptations in Documentation/power/energy-model.rst.

Agreed, and if one day we have a real use case where the pd mask and the
cpufreq policy mask need to be different, we'll do the necessary
changes. But until then I don't see a reason to object to Lukasz'
proposal. So +1 from me.

Thanks,
Quentin

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