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Mon, 09 Oct 2023 10:19:10 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779299203598274156 X-GMAIL-MSGID: 1779299203598274156 This patch set adds two improvements to get a finer control over the impact of thermal throttling on performance. 1) Patch 1: Adds support to read "Thermal fast Sampling Period (_TFP)" ACPI object and use it over "Thermal Sampling Period (_TSP)" for Passive cooling if both are present. 2) Patch 2: Adds support to reduce the CPUFREQ reduction percentage and not always cause throttling in steps of "20%" for Tegra241 SoC. Both patches can be applied independently. --- v3[3] -> 4: - Patch 2: move ARM code from generic to new file 'thermal_cpufreq.c'. : get 'cpufreq_thermal_pctg' value for Tegra241 from new file. : move dummy/null function to 'acpi.h'. v2[2] -> v3: - Patch1: rebased on top of linux-next. - Patch2: use __read_mostly for the cpufreq_thermal_* variables. : add static to new function acpi_thermal_cpufreq_config_nvidia. : add null function if CONFIG_HAVE_ARM_SMCCC_DISCOVERY undefined : removed redundant parenthesis. v1[1] -> v2: - Patch1: add ACPI spec section info in commit description and rebased. - Patch2: add info about hardware in the commit description. : switched CPUFREQ THERMAL tuning macros to static variables. : update the tunings for Tegra241 SoC only using soc_id check. Jeff Brasen (1): ACPI: thermal: Add Thermal fast Sampling Period (_TFP) support Srikar Srimath Tirumala (1): ACPI: processor: reduce CPUFREQ thermal reduction pctg for Tegra241 drivers/acpi/arm64/Makefile | 1 + drivers/acpi/arm64/thermal_cpufreq.c | 20 ++++++++++++++++ drivers/acpi/processor_thermal.c | 35 +++++++++++++++++++++++++--- drivers/acpi/thermal.c | 17 +++++++++----- include/linux/acpi.h | 9 +++++++ 5 files changed, 73 insertions(+), 9 deletions(-) create mode 100644 drivers/acpi/arm64/thermal_cpufreq.c [3] https://lore.kernel.org/linux-acpi/20231006153612.5851-1-sumitg@nvidia.com/ [2] https://lore.kernel.org/lkml/20230913164659.9345-1-sumitg@nvidia.com/ [1] https://lore.kernel.org/lkml/20230817093011.1378-1-sumitg@nvidia.com/