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Wysocki" , Borislav Petkov , 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 V13 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Fri, 12 Jan 2024 17:25:28 +0800 Message-ID: <20240112092531.789841-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240112092531.789841-1-li.meng@amd.com> References: <20240112092531.789841-1-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: DS1PEPF0001708E:EE_|MW3PR12MB4362:EE_ X-MS-Office365-Filtering-Correlation-Id: cf901fd6-485e-4886-6d4b-08dc1350844d 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)(346002)(39860400002)(136003)(376002)(396003)(230922051799003)(82310400011)(1800799012)(64100799003)(451199024)(186009)(46966006)(36840700001)(40470700004)(426003)(16526019)(86362001)(83380400001)(41300700001)(7696005)(6666004)(966005)(336012)(478600001)(2616005)(26005)(1076003)(6636002)(47076005)(4326008)(82740400003)(40480700001)(36756003)(70586007)(70206006)(8676002)(8936002)(54906003)(316002)(81166007)(110136005)(40460700003)(7416002)(2906002)(356005)(5660300002)(15650500001)(36860700001)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jan 2024 09:26:11.6808 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cf901fd6-485e-4886-6d4b-08dc1350844d 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: DS1PEPF0001708E.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4362 BIOS issues the notify 0x85 to OS that the highest performance changed. And it will affect the ranking of the preferred core. AMD-pstate driver will set the priority of cores based on the preferred core ranking. 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 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 4bd16b3f0781..67db60eda370 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_limits(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;