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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 , Perry Yuan Subject: [PATCH V12 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Tue, 5 Dec 2023 14:35:34 +0800 Message-ID: <20231205063537.872834-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231205063537.872834-1-li.meng@amd.com> References: <20231205063537.872834-1-li.meng@amd.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: DS3PEPF000099DB:EE_|CH3PR12MB9316:EE_ X-MS-Office365-Filtering-Correlation-Id: a566373c-4b6b-4f7f-f900-08dbf55ccf83 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: i9a90ojb7EjoYOtm4M6sBW9Z4jxcGG4YZw/oBRFC1ExXfsaBkR9v06WSQa/fjp+Ih0dKlr8ZTAtqcAe+BvqM+34zxq+mc1bZGsZG1ek5yy1iPhEgOZI2xoLNUJJ0no9F4Ze82K65KFj6l9UG8cCuIYTwxaKpQDPmR7kjpFWlDClHD/wrvmqcalMuxtwt/LjGRJceesvxKvqTkGleJcDRQHsiFkMaXqAxHTo2QmLpg0bgmP6ZQephEOGewhQ/tOMMpTwfwmp7Xedfdt3MwEQKmm2ElOm+BmWOSedpaNAWs7XPRWNXFd5Plkqe41mtFOS6Ir4PwqcGSmuIyLTPsmr5kvvejftF7UF7E1bN1Zq0dgT9J3swXod0X70roFGznQUjyuaDz2VFD2m/yrZLKdlawqcW4Nt8QQ3P7Bb9v0+FcMCrmw7luQ2ydZ+Bfa2bb4Gggeh4dfvqc0xdiTAtxjlDDMxjS3iqKvbua/wc76nPHn/P6Nm5zhKKMKdx/Siq4CEKm6Xvgw2X67AhD1AYHHv+JOYM4L7tjqCftxI3w/GsJk/8A8BcsUOG+WwuZwgDVvKpbQKNr8KODf2r2GB+aEQHuLr2K8zYPbEWT2dYaW2IUjuMQemdqC+TTjzqczPZxYRTAAKsDkis85ctsVOa69lecl2wK8Ko+ZEKe8iYrVc7xdB6ZqZ5qBJTn4cex4ZS7vRtirMcAqjlu3hjqKb43zxYbIYoLs40WRqN4tfur+Ejal+VHBXgcUMzXwzOfJB30gOit3O9hJ6Jp8F13VynpwOOiAImr+Fjz6mlU3boa7fPSrI= 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)(346002)(376002)(39860400002)(396003)(136003)(230922051799003)(82310400011)(1800799012)(64100799003)(451199024)(186009)(40470700004)(46966006)(36840700001)(26005)(478600001)(966005)(83380400001)(336012)(16526019)(47076005)(7696005)(6666004)(356005)(81166007)(426003)(1076003)(40480700001)(82740400003)(36756003)(2616005)(316002)(110136005)(6636002)(54906003)(70586007)(70206006)(36860700001)(5660300002)(4326008)(86362001)(2906002)(8936002)(8676002)(40460700003)(7416002)(41300700001)(15650500001)(226483002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Dec 2023 06:38:36.9604 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a566373c-4b6b-4f7f-f900-08dbf55ccf83 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: DS3PEPF000099DB.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9316 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 Reviewed-by: Perry Yuan 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 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);