From patchwork Fri Jan 19 09:05:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Meng, Li \(Jassmine\)" X-Patchwork-Id: 764541 Received: from NAM02-BN1-obe.outbound.protection.outlook.com (mail-bn1nam02on2079.outbound.protection.outlook.com [40.107.212.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2FFC21E89E; Fri, 19 Jan 2024 09:06:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.212.79 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705655194; cv=fail; b=dbb+NPxnfbqY9VQs6wxvHHBvr21xwMwW0Cwbj6EaiTQW408Fuj/ySJalnt8rMuMVuGai+QTTVoBf9SfTVC7IqYHnNkb2uAg38E2qfSeqilKz5ATWTcoiUoQYwCo3HSp84Mq93WIddoMzN1/vZAdlJc07C5TVh3IZ9dodNdp87os= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705655194; c=relaxed/simple; bh=IZvjB7EN/4zNzdRQnCVGIQg4s42HWrXioCam/fK1DV0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=m+cnZsxV8ut6SERmUrRjiLN36YOJQ2hUhHfKAB3SXqMq4UP1bxJvObX2UBl68lV+BWOdgFIA0aztEhJ4Bu/xkpOIv7H6a1/7bMh0T5+oW75xvXbFyQp0OtXzgK/bnivR3AhuUDpbYP/1T4h0AQkzOR3Ne7M3vAxSs+q10kESc3c= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=twRq39oL; arc=fail smtp.client-ip=40.107.212.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="twRq39oL" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Sfv7KOTQVQu5ozwi+Y8rHXbFDrRI2huujN6erunpMzUIOCyX8Xy3i/At2KNtoERysJdy13CfMlGO/RGe5yCV1CCRKJxLFjhJkJ20ZPFCGcPGniMqgv7+kf6Q4qmJQnW7hNTqB7bKBgjRSpZUVCKvMzLkEWa1uaJNKFwWTXw03jgb21sbfx3ZoMaqZZJwDFRnjt7/GZMPCcxAzsH7gfPzPxXdIxqFfCvPADkP9VJbUD2vI27LEfsAJpts07xXigowEFH/w3+Il/VTLqMro6UXXI/WMd809Gee24sWEWKw5EaTU3E8JIHZ6IE2sHG7VxyT8HXZPSker52uvOGxILQC3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=No7NU21ife6RzGvHBvQIbHlZ1whS1mUgP/ZoECpCgPo=; b=i5qE0PIl79fP8x4sNn2gv4ZfiRx2Dp8tjK+JMj1+KHaHd1ISj5FvesQnV8wnUP6BrXMldQrwirRPlb/ZmtGXQSKUJBGGWR/8fzLMIbx0TlzyZ91r1qr0HNn+Sic+g7gR/0dOX91y6Svozn/7cvpg1FVqmTE00NTBWCnOeSeOcocg6Wf4dtK/jL/HLhXxlieYDGO6Nl8nO3TI6nvTu76hROBT0CTHjmwX65U3EQ3KwXpydTRaAM5dFbbjDW9Msg6Ni01OAnmulbOldQXyEmUjP2I6reQyIh458n+N74HkkXiCl4Vk5EC5qLJdPwDhtoxHx23QwC4v/3ItAKNPtWinmw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=intel.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=No7NU21ife6RzGvHBvQIbHlZ1whS1mUgP/ZoECpCgPo=; b=twRq39oLD9T+KXqC2KD9tc+L9d5xeUiiDowEhvI7QYaKurL3Sjrc9hxSxvCVWHLeHiDCpcAhaqBwVrRQZayJwOztOKSNv4y0trSn4rxB8RD1BkmIciZdgusOjbs5560TaRqeH5/UDMaNC00FbVtnuDCGKXhTFdomKYe3ZoK6qAc= Received: from MW4PR04CA0347.namprd04.prod.outlook.com (2603:10b6:303:8a::22) by DS7PR12MB8250.namprd12.prod.outlook.com (2603:10b6:8:db::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7202.24; Fri, 19 Jan 2024 09:06:27 +0000 Received: from CO1PEPF000044F8.namprd21.prod.outlook.com (2603:10b6:303:8a:cafe::9e) by MW4PR04CA0347.outlook.office365.com (2603:10b6:303:8a::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7202.24 via Frontend Transport; Fri, 19 Jan 2024 09:06:27 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by CO1PEPF000044F8.mail.protection.outlook.com (10.167.241.198) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7228.0 via Frontend Transport; Fri, 19 Jan 2024 09:06:27 +0000 Received: from jasmine-meng.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Fri, 19 Jan 2024 03:06:05 -0600 From: Meng Li To: "Rafael J . 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 V14 7/7] Documentation: introduce amd-pstate preferrd core mode kernel command line options Date: Fri, 19 Jan 2024 17:05:02 +0800 Message-ID: <20240119090502.3869695-8-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240119090502.3869695-1-li.meng@amd.com> References: <20240119090502.3869695-1-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: CO1PEPF000044F8:EE_|DS7PR12MB8250:EE_ X-MS-Office365-Filtering-Correlation-Id: dec0e504-d57d-44fe-70cc-08dc18cdeb1b 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)(186009)(451199024)(64100799003)(82310400011)(1800799012)(46966006)(40470700004)(36840700001)(26005)(16526019)(478600001)(81166007)(1076003)(426003)(336012)(40480700001)(40460700003)(356005)(7696005)(2616005)(6666004)(316002)(70586007)(70206006)(54906003)(83380400001)(110136005)(6636002)(86362001)(5660300002)(41300700001)(4326008)(7416002)(8936002)(8676002)(82740400003)(47076005)(2906002)(36860700001)(36756003)(36900700001)(14943795004); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Jan 2024 09:06:27.0167 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dec0e504-d57d-44fe-70cc-08dc18cdeb1b 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: CO1PEPF000044F8.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB8250 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 e0891ac76ab3..88b29efc474f 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: ,