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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 V3 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Thu, 24 Aug 2023 10:12:46 +0800 Message-ID: <20230824021249.271946-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230824021249.271946-1-li.meng@amd.com> References: <20230824021249.271946-1-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: CY4PEPF0000EDD3:EE_|CH3PR12MB9453:EE_ X-MS-Office365-Filtering-Correlation-Id: 0a97771d-10e4-4a4a-3494-08dba447d8ab 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)(396003)(136003)(39860400002)(346002)(376002)(1800799009)(186009)(82310400011)(451199024)(36840700001)(40470700004)(46966006)(356005)(82740400003)(6666004)(81166007)(40460700003)(7696005)(336012)(426003)(1076003)(40480700001)(16526019)(26005)(47076005)(36860700001)(83380400001)(36756003)(2616005)(6636002)(316002)(2906002)(41300700001)(15650500001)(54906003)(70206006)(70586007)(110136005)(5660300002)(4326008)(8676002)(8936002)(86362001)(966005)(478600001)(226483002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Aug 2023 02:14:28.6695 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0a97771d-10e4-4a4a-3494-08dba447d8ab 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: CY4PEPF0000EDD3.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9453 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 | 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 9bf94ae08158..58106b3d9183 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -232,6 +232,7 @@ 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); @@ -377,6 +378,9 @@ 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);