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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 , Meng Li Subject: [PATCH V8 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Mon, 9 Oct 2023 10:49:29 +0800 Message-ID: <20231009024932.2563622-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231009024932.2563622-1-li.meng@amd.com> References: <20231009024932.2563622-1-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: BL6PEPF0001AB4D:EE_|SA0PR12MB4352:EE_ X-MS-Office365-Filtering-Correlation-Id: 15a8c133-8bd9-4828-dddd-08dbc8728ac2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: UdQSNtUIqBL0+ONVH4HihnOBiXdlOG3joIMjJglQ6idBVDpI2XHeqJc5PctPBESdi6tWLaj2hIMyBLTP+EsNWkGTqFkabrOEN48v1gFmQh94E9rjMeksujo54hX9I37XvTA3cYqQehFlUe3zTJo4GeuFrqIUOcuxKM2U2lr761eVmb6NnjGQqCJkHFv6+bluDUrju6Zx4UBaMXOVLsFg9BQpgiBkIAr4TmpOJ2B1TJetszoR6g3jmoeeJiJtS0MjtP5jH1C4uJ2irppPlSY2o7CA6xfKOjY88gdc18QtfRSUdy2Vcc/OpaNm9NqoFT8JHuCyBJ/eaagn7UguDsJFaTPfl7Zs/7+4zMweZ6B9OlhCSNfrcfQaFVMqp9WfRd8Y16NMCj+04QsF5bKBt6CGPFc+TJI6g5/efgxzc9RtXMpZlko0fsPDOTozg9CdMIfuwYKTgt9Xn8A4rHpxie0oFW5aj7el1f/b4HfyY5AeTRu7SxfBHCkjHawi4/q3Rb8/S2LNKbjqrg1cSDfrEvKm7ddNWEtb9gCusP1B3vZt4DIU4KzoEmZLttyunrOk6tOV8NIyYVpBX0J5H5Pq7nVfClgRBZ3AvZnQN2v1XIrdR1P2q5FgdD12VpDC7gzv6hu14EuqxUrQieFQC9O+95/3kgB6d2x6qYy1UT3pBFQZyzDZc+n8J3ZMq1yTTFMEXBFqvjTvG5jScd9ZtYj3w6PtWkTLasgwF6pzb+CaKfbXLdr7A8T4F+5T+4HHx3bEFJnh9/9/2uYQMsV6dbzQOFAnAqDKgPxKccGs1yRRV0Jrosk= 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)(39860400002)(136003)(376002)(346002)(396003)(230922051799003)(82310400011)(1800799009)(186009)(451199024)(64100799003)(40470700004)(46966006)(36840700001)(40460700003)(1076003)(478600001)(7696005)(26005)(2616005)(966005)(47076005)(336012)(16526019)(83380400001)(426003)(15650500001)(2906002)(5660300002)(110136005)(54906003)(70206006)(70586007)(6636002)(4326008)(8936002)(8676002)(316002)(41300700001)(40480700001)(356005)(81166007)(36860700001)(82740400003)(36756003)(86362001)(6666004)(226483002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Oct 2023 02:50:48.2442 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 15a8c133-8bd9-4828-dddd-08dbc8728ac2 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: BL6PEPF0001AB4D.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA0PR12MB4352 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. 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: Wyes Karny --- 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);