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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 , "Oleksandr Natalenko" , Meng Li Subject: [PATCH V9 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Fri, 13 Oct 2023 10:57:38 +0800 Message-ID: <20231013025741.3332520-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231013025741.3332520-1-li.meng@amd.com> References: <20231013025741.3332520-1-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: CO1PEPF000044F5:EE_|PH7PR12MB7819:EE_ X-MS-Office365-Filtering-Correlation-Id: 7d881ec1-ff1f-475f-9f28-08dbcb9842cc 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)(376002)(39860400002)(346002)(136003)(230922051799003)(186009)(451199024)(1800799009)(82310400011)(64100799003)(40470700004)(36840700001)(46966006)(7696005)(83380400001)(36860700001)(47076005)(16526019)(82740400003)(40460700003)(336012)(426003)(40480700001)(7416002)(86362001)(4326008)(2906002)(15650500001)(5660300002)(966005)(8676002)(26005)(8936002)(6666004)(110136005)(316002)(70586007)(70206006)(6636002)(54906003)(41300700001)(36756003)(1076003)(356005)(81166007)(2616005)(478600001)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Oct 2023 02:58:21.7512 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7d881ec1-ff1f-475f-9f28-08dbcb9842cc 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: CO1PEPF000044F5.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7819 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@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. Tested-by: Oleksandr Natalenko Reviewed-by: Mario Limonciello Reviewed-by: Huang Rui Signed-off-by: Meng Li Link: https://uefi.org/specs/ACPI/6.5/05_ACPI_Software_Programming_Model.html#processor-device-notification-values --- 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);