cpufreq: intel_pstate: Implement the ->adjust_perf() callback

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Make intel_pstate expose the ->adjust_perf() callback when it
operates in the passive mode with HWP enabled which causes the
schedutil governor to use that callback instead of ->fast_switch().

The minimum and target performance-level values passed by the
governor to ->adjust_perf() are converted to HWP.REQ.MIN and
HWP.REQ.DESIRED, respectively, which allows the processor to
adjust its configuration to maximize energy-efficiency while
providing sufficient capacity.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>

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Rafael J. Wysocki 2020-12-14 21:09:26 +01:00

parent ee2cc4276b

commit a365ab6b9d

1 changed files with 58 additions and 12 deletions

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drivers/cpufreq/intel_pstate.c

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