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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 V10 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Mon, 30 Oct 2023 14:34:00 +0800 Message-ID: <20231030063403.3502816-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231030063403.3502816-1-li.meng@amd.com> References: <20231030063403.3502816-1-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: BL6PEPF0001AB74:EE_|SJ2PR12MB8941:EE_ X-MS-Office365-Filtering-Correlation-Id: 49dc4ece-0bd9-4d46-ab80-08dbd912685a 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)(136003)(376002)(346002)(396003)(39860400002)(230922051799003)(82310400011)(186009)(1800799009)(64100799003)(451199024)(36840700001)(40470700004)(46966006)(40460700003)(2906002)(15650500001)(7416002)(5660300002)(41300700001)(4326008)(8936002)(8676002)(36756003)(40480700001)(86362001)(82740400003)(316002)(110136005)(54906003)(6636002)(36860700001)(47076005)(356005)(81166007)(70206006)(70586007)(83380400001)(426003)(1076003)(16526019)(336012)(2616005)(7696005)(966005)(478600001)(26005)(6666004)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Oct 2023 06:35:28.5999 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 49dc4ece-0bd9-4d46-ab80-08dbd912685a 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: BL6PEPF0001AB74.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8941 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. 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 4bc15634d49c..e66b040b0c61 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2717,6 +2717,19 @@ 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 1c5ca92a0555..f62257b2a42f 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);