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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 V5 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Tue, 5 Sep 2023 09:51:13 +0800 Message-ID: <20230905015116.2268926-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230905015116.2268926-1-li.meng@amd.com> References: <20230905015116.2268926-1-li.meng@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD1:EE_|BN9PR12MB5292:EE_ X-MS-Office365-Filtering-Correlation-Id: 60923eb7-b5ce-4e4c-d7bb-08dbadb2b5b4 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(39860400002)(346002)(376002)(136003)(396003)(186009)(82310400011)(1800799009)(451199024)(40470700004)(36840700001)(46966006)(47076005)(36860700001)(40460700003)(15650500001)(2906002)(36756003)(86362001)(81166007)(356005)(82740400003)(40480700001)(41300700001)(7696005)(316002)(6636002)(54906003)(110136005)(70586007)(70206006)(4326008)(8676002)(2616005)(1076003)(8936002)(478600001)(966005)(6666004)(336012)(426003)(16526019)(5660300002)(26005)(83380400001)(226483002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Sep 2023 01:52:06.6118 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 60923eb7-b5ce-4e4c-d7bb-08dbadb2b5b4 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: CY4PEPF0000EDD1.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5292 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org ACPI 6.5 section 8.4.6.1.1.1 specifies that Notify event 0x85 can be emmitted to cause the the OSPM to re-evaluate the highest performance register. Add support for this event. Signed-off-by: Meng Li Link: https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html?highlight=cppc#cpc-continuous-performance-control --- drivers/acpi/processor_driver.c | 6 ++++++ drivers/cpufreq/cpufreq.c | 13 +++++++++++++ include/linux/cpufreq.h | 5 +++++ 3 files changed, 24 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 60ed89000e82..4ada787ff105 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2718,6 +2718,19 @@ 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 71d186d6933a..1cc1241fb698 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -235,6 +235,7 @@ 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); @@ -263,6 +264,7 @@ static inline bool cpufreq_supports_freq_invariance(void) return false; } static inline void disable_cpufreq(void) { } +static inline void cpufreq_update_highest_perf(unsigned int cpu) { } #endif #ifdef CONFIG_CPU_FREQ_STAT @@ -380,6 +382,9 @@ 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);