ACPI: processor: reduce CPUFREQ thermal reduction pctg for Tegra241

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Current implementation of processor_thermal performs software throttling
in fixed steps of "20%" which can be too coarse for some platforms.
We observed some performance gain after reducing the throttle percentage.
Change the CPUFREQ thermal reduction percentage and maximum thermal steps
to be configurable. Also, update the default values of both for Nvidia
Tegra241 (Grace) SoC. The thermal reduction percentage is reduced to "5%"
and accordingly the maximum number of thermal steps are increased as they
are derived from the reduction percentage.

Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
Co-developed-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Srikar Srimath Tirumala 2023-11-23 17:44:33 +05:30 • committed by Rafael J. Wysocki

parent 4c2ba6a0ed

commit 310293a2b9

4 changed files with 70 additions and 9 deletions

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1

drivers/acpi/arm64/Makefile

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20

drivers/acpi/arm64/thermal_cpufreq.c

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9

drivers/acpi/internal.h

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49

drivers/acpi/processor_thermal.c

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