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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 , Wyes Karny , Perry Yuan Subject: [PATCH V12 7/7] Documentation: introduce amd-pstate preferrd core mode kernel command line options Date: Tue, 5 Dec 2023 14:35:37 +0800 Message-ID: <20231205063537.872834-8-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_|SN7PR12MB6838:EE_ X-MS-Office365-Filtering-Correlation-Id: e2469d75-a601-4cbe-908b-08dbf55ce368 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)(396003)(136003)(39860400002)(346002)(230922051799003)(64100799003)(451199024)(1800799012)(82310400011)(186009)(40470700004)(36840700001)(46966006)(40460700003)(54906003)(8676002)(86362001)(8936002)(6636002)(316002)(4326008)(478600001)(70586007)(110136005)(70206006)(36756003)(41300700001)(2906002)(5660300002)(7416002)(36860700001)(81166007)(356005)(47076005)(26005)(426003)(2616005)(1076003)(7696005)(82740400003)(83380400001)(16526019)(336012)(6666004)(40480700001)(36900700001)(14943795004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Dec 2023 06:39:10.3196 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e2469d75-a601-4cbe-908b-08dbf55ce368 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: SN7PR12MB6838 amd-pstate driver support enable/disable preferred core. Default enabled on platforms supporting amd-pstate preferred core. Disable amd-pstate preferred core with "amd_prefcore=disable" added to the kernel command line. Signed-off-by: Meng Li Reviewed-by: Mario Limonciello Reviewed-by: Wyes Karny Reviewed-by: Huang Rui Reviewed-by: Perry Yuan Tested-by: Oleksandr Natalenko --- 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 65731b060e3f..cbfa63a87e4a 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] + disable + Disable amd-pstate preferred core. + amijoy.map= [HW,JOY] Amiga joystick support Map of devices attached to JOY0DAT and JOY1DAT Format: ,