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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 V1 6/6] Documentation: introduce AMD Pstate Preferrd Core mode kernel command line options Date: Tue, 8 Aug 2023 16:10:01 +0800 Message-ID: <20230808081001.2215240-7-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230808081001.2215240-1-li.meng@amd.com> References: <20230808081001.2215240-1-li.meng@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] 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: MWH0EPF000971E9:EE_|DM3PR12MB9325:EE_ X-MS-Office365-Filtering-Correlation-Id: 71c336c2-ae13-403f-0fa0-08db97e73a3b 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:(13230028)(4636009)(136003)(39860400002)(396003)(346002)(376002)(82310400008)(1800799003)(186006)(90021799007)(451199021)(90011799007)(46966006)(40470700004)(36840700001)(2616005)(7696005)(1076003)(26005)(36756003)(16526019)(336012)(6666004)(82740400003)(478600001)(81166007)(356005)(110136005)(54906003)(70586007)(70206006)(6636002)(4326008)(41300700001)(426003)(316002)(8936002)(8676002)(5660300002)(40460700003)(4744005)(2906002)(36860700001)(83380400001)(47076005)(86362001)(40480700001)(36900700001)(14943795004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Aug 2023 08:12:37.1527 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 71c336c2-ae13-403f-0fa0-08db97e73a3b 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: MWH0EPF000971E9.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB9325 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org AMD Pstate driver support enable/disable Preferred core. Default disabled on platforms supporting AMD Preferred Core. Enable AMD Pstate Preferred Core with "amd_prefcore=enable" added to the kernel command line. Signed-off-by: Meng Li --- Documentation/admin-guide/kernel-parameters.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 2de235d52fac..bc92e178431b 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -363,6 +363,11 @@ selects a performance level in this range and appropriate to the current workload. + amd_prefcore= + [X86] + enable + Enable AMD Pstate Preferred Core. + amijoy.map= [HW,JOY] Amiga joystick support Map of devices attached to JOY0DAT and JOY1DAT Format: ,