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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 , Wyes Karny , Perry Yuan Subject: [PATCH V13 7/7] Documentation: introduce amd-pstate preferrd core mode kernel command line options Date: Fri, 12 Jan 2024 17:25:31 +0800 Message-ID: <20240112092531.789841-8-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: DS1PEPF00017095:EE_|SA1PR12MB9245:EE_ X-MS-Office365-Filtering-Correlation-Id: 68211a65-65ac-4446-7a38-08dc13509235 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)(39860400002)(136003)(376002)(346002)(396003)(230922051799003)(451199024)(1800799012)(82310400011)(64100799003)(186009)(46966006)(40470700004)(36840700001)(7416002)(26005)(5660300002)(2616005)(47076005)(2906002)(1076003)(356005)(4326008)(316002)(6666004)(83380400001)(81166007)(110136005)(82740400003)(36860700001)(8676002)(8936002)(54906003)(6636002)(16526019)(41300700001)(478600001)(70586007)(336012)(7696005)(70206006)(426003)(86362001)(36756003)(40460700003)(40480700001)(36900700001)(14943795004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jan 2024 09:26:35.0119 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 68211a65-65ac-4446-7a38-08dc13509235 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: DS1PEPF00017095.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB9245 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: ,