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Fri, 9 Sep 2022 16:47:04 +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 BN8NAM11FT025.mail.protection.outlook.com (10.13.177.136) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5612.13 via Frontend Transport; Fri, 9 Sep 2022 16:47:04 +0000 Received: from pyuan-Cloudripper.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 15.1.2375.28; Fri, 9 Sep 2022 11:46:59 -0500 From: Perry Yuan To: , , CC: , , , , , , , , , , Perry Yuan Subject: [PATCH 2/7] cpufreq: amd_pstate: add module parameter to load amd pstate EPP driver Date: Sat, 10 Sep 2022 00:45:29 +0800 Message-ID: <20220909164534.71864-3-Perry.Yuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220909164534.71864-1-Perry.Yuan@amd.com> References: <20220909164534.71864-1-Perry.Yuan@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: BN8NAM11FT025:EE_|DS0PR12MB6438:EE_ X-MS-Office365-Filtering-Correlation-Id: 0acbfed9-cec1-439f-0def-08da9282ed25 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230016)(4636009)(376002)(346002)(396003)(136003)(39860400002)(36840700001)(40470700004)(46966006)(83380400001)(82310400005)(36860700001)(40480700001)(82740400003)(36756003)(4326008)(110136005)(316002)(54906003)(70586007)(478600001)(70206006)(8676002)(5660300002)(336012)(16526019)(1076003)(47076005)(186003)(40460700003)(6666004)(426003)(8936002)(26005)(41300700001)(81166007)(356005)(7696005)(86362001)(2616005)(2906002)(36900700001)(2101003); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Sep 2022 16:47:04.7753 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0acbfed9-cec1-439f-0def-08da9282ed25 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: BN8NAM11FT025.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6438 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The amd_pstate mode parameter will allow user to select which amd pstate working mode as booting mode, amd_pstate instance or amd_pstate_epp instance. 1) amd_pstate instance is depending on the target operation mode. 2) amd_pstate_epp instance is depending on the set_policy operation mode.It is also called active mode that AMD SMU has EPP algorithm to control the CPU runtime frequency according to the EPP set value and workload. Signed-off-by: Perry Yuan --- drivers/cpufreq/amd-pstate.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index a2463f785322..451295284a26 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -58,6 +58,12 @@ module_param(shared_mem, bool, 0444); MODULE_PARM_DESC(shared_mem, "enable amd-pstate on processors with shared memory solution (false = disabled (default), true = enabled)"); +static bool epp_enabled = true; +module_param(epp_enabled, bool, 0444); +MODULE_PARM_DESC(epp_enabled, + "load amd_pstate or amd_pstate_epp (true = amd_pstate_epp driver instance (default), false = amd_pstate driver instance)"); + + static struct cpufreq_driver amd_pstate_driver; /**