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Wysocki" , Huang Rui CC: , , , , Shuah Khan , , "Nathan Fontenot" , Deepak Sharma , Alex Deucher , Mario Limonciello , Shimmer Huang , "Perry Yuan" , Xiaojian Du , Viresh Kumar , Borislav Petkov , Meng Li Subject: [PATCH V1 3/6] cpufreq: Add a notification message that the highest perf has changed Date: Tue, 8 Aug 2023 16:09:58 +0800 Message-ID: <20230808081001.2215240-4-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230808081001.2215240-1-li.meng@amd.com> References: <20230808081001.2215240-1-li.meng@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000971E9:EE_|DM6PR12MB4297:EE_ X-MS-Office365-Filtering-Correlation-Id: 00895c46-dd95-418b-75d1-08db97e7059c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: f1mekc82Xxrn0f6Pi9ueUJ2MJEQxyfA51/Vunt8JGsPlMXehrh4MDiIV0UBNjcxZPb+EoLvS88lh+heHULl0MPXT6AblQTDCcOv2vxgByqprqbu3YGn0PKilKVW0U7YzbiSt7bec4l6AmhgAA2de4hGzv/yOIEgpb3jljAB12vtN7V5FKvVzsJFa80gjfS2Owzh82g2US6A9DxyNQu2u6XloSANBvxsUaP43pJU3W/ZNawLOnulYJFC2j5JXwrlwTGFH46H3AGlSyDoyiT5lPJwWDXbjexzHlBOO2QaGjeyEVkZoUzwGPpU0iDjnvx73DT5pkLqgeSsdT+biwD5qDjP4LXXTki8Vsaj9hWf2ztK+kTNiqUuSbB6tnrHXvb42UtinWfi0spx4UWxTrXF6fmmUPNGUHh6y2dwgNgekPu8Bb3XttbT2oertaeA9J5/P4PQck8E+YxOsYm5Bfup7rQmalHC6YptD6205YC9RhkG7SgsnfPQLBcOmHwjBGAY7j7QtGM5XtmumFmzEfniuNFR6yITOIyQg0+B/1eyMOkNSXkjQOV0wQ5tPfl3ydY9YFgS+PsALNe26oeFUuVXsF0/+9piQrduAxQU2qovM4NO9fsaX2HZL3PM0kKfzkn2KEr8+zdZTJSiMZn1mkwfOwWnvvwAaCwiI/mYoCN8gUzUxfjeGSy8pFPKesBH2oZhxn/uIkJRWvzZMeMnlmdZJ7pAZDUb9qaa7UtdsevV35sAASqoSulI0/PjKT+5zh6vZJT2oKM3r1he3hnIZ28qyedBE1WkXZUjSMww0dSNLbnFO80WDrLr+qimNmooS4J6d/9J8kyL9bIZLPqBjNSwR0EnXYRMQgWufw07oAKKBHkg= X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230028)(4636009)(136003)(346002)(39860400002)(396003)(376002)(90011799007)(186006)(1800799003)(82310400008)(451199021)(90021799007)(36840700001)(40470700004)(46966006)(8676002)(110136005)(4326008)(41300700001)(8936002)(40480700001)(70206006)(70586007)(54906003)(36756003)(6636002)(5660300002)(15650500001)(316002)(40460700003)(81166007)(36860700001)(356005)(478600001)(7696005)(6666004)(966005)(2906002)(16526019)(83380400001)(336012)(86362001)(26005)(1076003)(82740400003)(47076005)(426003)(2616005)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Aug 2023 08:11:08.9030 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 00895c46-dd95-418b-75d1-08db97e7059c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MWH0EPF000971E9.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4297 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Please refer to the ACPI_Spec for details on the highest performance and notify events of CPPC. Signed-off-by: Meng Li Link: https://uefi.org/htmlspecs/AddCPI_Spec_6_4_html/08_Processor_Configuration_and_Control/declaring-processors.html?highlight=0x85#highest-performance --- drivers/acpi/processor_driver.c | 6 ++++++ drivers/cpufreq/cpufreq.c | 13 +++++++++++++ include/linux/cpufreq.h | 4 ++++ 3 files changed, 23 insertions(+) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 4bd16b3f0781..29b2fb68a35d 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -27,6 +27,7 @@ #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80 #define ACPI_PROCESSOR_NOTIFY_POWER 0x81 #define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82 +#define ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED 0x85 MODULE_AUTHOR("Paul Diefenbaugh"); MODULE_DESCRIPTION("ACPI Processor Driver"); @@ -83,6 +84,11 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; + case ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED: + cpufreq_update_highest_perf(pr->id); + acpi_bus_generate_netlink_event(device->pnp.device_class, + dev_name(&device->dev), event, 0); + break; default: acpi_handle_debug(handle, "Unsupported event [0x%x]\n", event); break; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 50bbc969ffe5..842357abfae6 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2675,6 +2675,19 @@ void cpufreq_update_limits(unsigned int cpu) } EXPORT_SYMBOL_GPL(cpufreq_update_limits); +/** + * cpufreq_update_highest_perf - Update highest performance for a given CPU. + * @cpu: CPU to update the highest performance for. + * + * Invoke the driver's ->update_highest_perf callback if present + */ +void cpufreq_update_highest_perf(unsigned int cpu) +{ + if (cpufreq_driver->update_highest_perf) + cpufreq_driver->update_highest_perf(cpu); +} +EXPORT_SYMBOL_GPL(cpufreq_update_highest_perf); + /********************************************************************* * BOOST * *********************************************************************/ diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 172ff51c1b2a..766c83a4fae7 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -231,6 +231,7 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu); void refresh_frequency_limits(struct cpufreq_policy *policy); void cpufreq_update_policy(unsigned int cpu); void cpufreq_update_limits(unsigned int cpu); +void cpufreq_update_highest_perf(unsigned int cpu); bool have_governor_per_policy(void); bool cpufreq_supports_freq_invariance(void); struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); @@ -376,6 +377,9 @@ struct cpufreq_driver { /* Called to update policy limits on firmware notifications. */ void (*update_limits)(unsigned int cpu); + /* Called to update highest performance on firmware notifications. */ + void (*update_highest_perf)(unsigned int cpu); + /* optional */ int (*bios_limit)(int cpu, unsigned int *limit);