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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 V11 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Wed, 29 Nov 2023 14:54:34 +0800 Message-ID: <20231129065437.290183-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231129065437.290183-1-li.meng@amd.com> References: <20231129065437.290183-1-li.meng@amd.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: SN1PEPF0002BA51:EE_|DS0PR12MB8245:EE_ X-MS-Office365-Filtering-Correlation-Id: ccbb551f-047b-467d-dd60-08dbf0a82795 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)(376002)(136003)(346002)(39860400002)(396003)(230922051799003)(451199024)(1800799012)(82310400011)(186009)(64100799003)(46966006)(40470700004)(36840700001)(26005)(83380400001)(81166007)(6636002)(47076005)(426003)(336012)(82740400003)(86362001)(4326008)(8936002)(7696005)(70206006)(36860700001)(316002)(70586007)(110136005)(966005)(54906003)(15650500001)(5660300002)(8676002)(7416002)(478600001)(356005)(2906002)(36756003)(40480700001)(41300700001)(6666004)(16526019)(1076003)(2616005)(40460700003)(226483002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Nov 2023 06:55:21.1737 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ccbb551f-047b-467d-dd60-08dbf0a82795 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: SN1PEPF0002BA51.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB8245 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 Reviewed-by: Perry Yuan --- 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 934d35f570b7..14a4cbc6dd05 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);