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Fri, 6 Oct 2023 08:36:16 -0700 From: Sumit Gupta To: , , , , CC: , , , , , , , Subject: [Patch v3 0/2] Add support for _TFP and change throttle pctg Date: Fri, 6 Oct 2023 21:06:10 +0530 Message-ID: <20231006153612.5851-1-sumitg@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD4:EE_|CY8PR12MB7362:EE_ X-MS-Office365-Filtering-Correlation-Id: 37d65f38-1dbd-498c-5aaf-08dbc68204ab X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233; 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Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EDD4.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7362 X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net 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. --- 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/processor_thermal.c | 43 +++++++++++++++++++++++++++++--- drivers/acpi/thermal.c | 17 ++++++++----- 2 files changed, 51 insertions(+), 9 deletions(-) [2] https://lore.kernel.org/lkml/20230913164659.9345-1-sumitg@nvidia.com/ [1] https://lore.kernel.org/lkml/20230817093011.1378-1-sumitg@nvidia.com/