[PATCH v3 3/3] [RFC] CPUFreq: Add support for cpu-perf-dependencies
Viresh Kumar
viresh.kumar at linaro.org
Tue Nov 17 05:53:37 EST 2020
On 17-11-20, 10:47, Nicola Mazzucato wrote:
> Freq-invariance has been mentioned. I suppose the fix will depend on which
> strategy we prefer to solve this.
I am not sure how FIE will use this information, as I thought the
problem is about knowing the current frequency on a CPU instead of
which CPUs are related. Anyway, EM is good enough to get this stuff
going.
> As a reminder, two solutions:
> 1) dependent_cpus cpumask in cpufreq and involved entities pick this info
Yeah, this one. And it will be called freqdomain_cpus. Add support for
freqdomain_cpus in core, update acpi-cpufreq to reuse it instead of
adding its own and you can have it in other drivers then.
--
viresh
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