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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 V6 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Fri, 8 Sep 2023 15:46:50 +0800 Message-ID: <20230908074653.2799055-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230908074653.2799055-1-li.meng@amd.com> References: <20230908074653.2799055-1-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: CO1PEPF000044FC:EE_|SA1PR12MB7038:EE_ X-MS-Office365-Filtering-Correlation-Id: 194781e2-cfdc-47a2-48e4-08dbb03fe97b 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)(376002)(346002)(39860400002)(451199024)(82310400011)(186009)(1800799009)(46966006)(40470700004)(36840700001)(15650500001)(966005)(8936002)(8676002)(4326008)(478600001)(110136005)(70206006)(70586007)(5660300002)(83380400001)(40480700001)(41300700001)(2906002)(54906003)(86362001)(316002)(6636002)(82740400003)(26005)(40460700003)(2616005)(356005)(1076003)(81166007)(16526019)(7696005)(426003)(336012)(47076005)(36860700001)(36756003)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2023 07:47:54.8093 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 194781e2-cfdc-47a2-48e4-08dbb03fe97b 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: CO1PEPF000044FC.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7038 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);