From patchwork Tue Aug 15 06:15:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Meng, Li \(Jassmine\)" X-Patchwork-Id: 713989 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 51173C41513 for ; Tue, 15 Aug 2023 06:17:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234883AbjHOGQr (ORCPT ); Tue, 15 Aug 2023 02:16:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234895AbjHOGQk (ORCPT ); Tue, 15 Aug 2023 02:16:40 -0400 Received: from NAM02-SN1-obe.outbound.protection.outlook.com (mail-sn1nam02on2059.outbound.protection.outlook.com [40.107.96.59]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EFC7513E; Mon, 14 Aug 2023 23:16:38 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Reg6xABXAkhslzg4MscyaovEkUE+LgV49FbedpyL0HK2qII8Ny0f+wvvUbjV8ZfdiJsXcaQlj0Ou1pSF7LM4KWcgExFRIikxf7Hvf+/5NQIpUXvZpJ3817Bp0huRKZKN3w6bjl3NUwmOEM55WNWw/huaITeUt57Uq9x8H91AzQivGtl2wJKlaM50X2f19g6K2fZ2Z38TpANFD3lu0Q1LcAU91tSxqaHohaBLQXY1FJc0d4pj4VS0ukrv89YfnZVjsV1cZVKtvF7bW7acWoeO43Vw6lNnby7p59vH1jmkDvYrKb5GOgDznNLsPhmyf9JYOUbMxdWkYajY7f2VaH0voQ== 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=DFDn6jp+E1OfjmJLdn866JLVFhZZ4KpifA7cfk25OJ4=; b=eVq9Af0IMWrWC4jfW4yizJiI2Rq2kJjyJSVmKyUP80XMetV77XYa/zY6DsJ1wCOT0u1uuPtAsGFnnZbesKZIiyEYvALqfePaQ1FTskhEclZ35NRdftIwlQDKCipFeraZLEEva4ig7cM0EHYNEA82XimzQFVUlpEnTu85bgtuJIIzAOkNs1a2LigsJxMRlA0VuGulJTJdGpfLg1UioE4Zp5tqQm8mAHZ1HDi8lXJITf7mDnmVabN260LrVOXYwNVVhvhwYk7G3+R4xp+CB7PF9WcdniIq4nDmfQPEj7p6lr4Ktq3ykAfNQgaF8wicnQFVbhVgPnqEQCeBGbqbRl2pNA== 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 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=DFDn6jp+E1OfjmJLdn866JLVFhZZ4KpifA7cfk25OJ4=; b=DmuKpQv/Wdq6A+MeK1TxXUQEevuEiJmnYZOIybmZmVKgnCgEsjcPzyGiMI/F0knjtsbuQwYOPggk0JcvWKALZNuZ1VUyye8sVfznlUMlIaeEwvhvSjTeKojEGHTO2s68wSG2z7slzfzsvfKWQpAmGYf0tGvhoi2wA2VDlmTQucc= Received: from SA0PR11CA0142.namprd11.prod.outlook.com (2603:10b6:806:131::27) by SA3PR12MB7805.namprd12.prod.outlook.com (2603:10b6:806:319::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6678.26; Tue, 15 Aug 2023 06:16:34 +0000 Received: from SA2PEPF00001505.namprd04.prod.outlook.com (2603:10b6:806:131:cafe::33) by SA0PR11CA0142.outlook.office365.com (2603:10b6:806:131::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.33 via Frontend Transport; Tue, 15 Aug 2023 06:16:34 +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 SA2PEPF00001505.mail.protection.outlook.com (10.167.242.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6699.13 via Frontend Transport; Tue, 15 Aug 2023 06:16:33 +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 15.1.2507.27; Tue, 15 Aug 2023 01:16:28 -0500 From: Meng Li To: "Rafael J . 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 V2 2/7] acpi: cppc: Add get the highest performance cppc control Date: Tue, 15 Aug 2023 14:15:41 +0800 Message-ID: <20230815061546.3556083-3-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230815061546.3556083-1-li.meng@amd.com> References: <20230815061546.3556083-1-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: SA2PEPF00001505:EE_|SA3PR12MB7805:EE_ X-MS-Office365-Filtering-Correlation-Id: dab7208b-421f-41d9-e724-08db9d572c91 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)(346002)(396003)(376002)(451199021)(82310400008)(186006)(1800799006)(36840700001)(46966006)(40470700004)(40460700003)(336012)(426003)(16526019)(1076003)(26005)(2616005)(36860700001)(47076005)(7696005)(41300700001)(54906003)(70206006)(70586007)(2906002)(316002)(6636002)(5660300002)(8936002)(8676002)(4326008)(478600001)(6666004)(966005)(110136005)(40480700001)(81166007)(356005)(82740400003)(86362001)(36756003)(15583001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2023 06:16:33.8062 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dab7208b-421f-41d9-e724-08db9d572c91 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: SA2PEPF00001505.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7805 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add support for getting the highest performance to the generic CPPC driver. This enables downstream drivers such as amd-pstate to discover and use these values. Please refer to the ACPI_Spec for details on continuous performance control of CPPC. Signed-off-by: Meng Li Reviewed-by: Mario Limonciello Link: https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html?highlight=cppc#cpc-continuous-performance-control --- drivers/acpi/cppc_acpi.c | 13 +++++++++++++ include/acpi/cppc_acpi.h | 5 +++++ 2 files changed, 18 insertions(+) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 7ff269a78c20..ad388a0e8484 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1154,6 +1154,19 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) return cppc_get_perf(cpunum, NOMINAL_PERF, nominal_perf); } +/** + * cppc_get_highest_perf - Get the highest performance register value. + * @cpunum: CPU from which to get highest performance. + * @highest_perf: Return address. + * + * Return: 0 for success, -EIO otherwise. + */ +int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf); +} +EXPORT_SYMBOL_GPL(cppc_get_highest_perf); + /** * cppc_get_epp_perf - Get the epp register value. * @cpunum: CPU from which to get epp preference value. diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 6126c977ece0..c0b69ffe7bdb 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -139,6 +139,7 @@ struct cppc_cpudata { #ifdef CONFIG_ACPI_CPPC_LIB extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf); extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf); +extern int cppc_get_highest_perf(int cpunum, u64 *highest_perf); extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs); extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls); extern int cppc_set_enable(int cpu, bool enable); @@ -165,6 +166,10 @@ static inline int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) { return -ENOTSUPP; } +static inline int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return -ENOTSUPP; +} static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs) { return -ENOTSUPP; From patchwork Tue Aug 15 06:15:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Meng, Li \(Jassmine\)" X-Patchwork-Id: 713988 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 005E4C001B0 for ; Tue, 15 Aug 2023 06:18:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234918AbjHOGRw (ORCPT ); Tue, 15 Aug 2023 02:17:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33532 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234948AbjHOGR0 (ORCPT ); Tue, 15 Aug 2023 02:17:26 -0400 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2059.outbound.protection.outlook.com [40.107.92.59]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B2568E7E; Mon, 14 Aug 2023 23:17:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=klmKXxAnmdwra9HguU882kezokXjcmsIfdPDQkP6W0la16GrZW0GnkHFLqUk7XtLvcBjeuhLTOGQ+c+RE2Z7C7bsAtJSZClcWje4folV7V1imgc1373Uc2pvV8dmXGPQVlEaENAdr0Ng2SOwD2cC8zm6l1VBDFI0shES7hMp2izAkf8dvdQRS1gAbMR2cpzOKEhk9aIHgU8MIaVw/GOq2LRdf/Exy1e0kkUtzvCAh6H1QlQ0c4jsly0B6YldDMSZ1FIQc6SdHoFFeFpItac6bTBmNtnt3TQyuKY//NbXj5QLebSfCszr7q0rxvireg2CSdHAp/GFrKuB2c2leQ4teg== 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=NswM4r5KNQfDxP4tMos8eW3yF0w29xh1Is0/AXnWSt8=; b=AXdIU6Zs2MRroHM18OTBer5tW5v6fB414nZFDx+1TJPzd4Z2bANUgSFjfVwsGTV6nRBImqCYYhZWilBYUhWW6BxWJaftKm3+Q0wDdEoJKmMZwaqWql+zRia33HKvZcPyJ7Z8sHjnlJhqVjKeNYrw5O0g4pu/98muR6hxr5ooD8wy5sJ2E3LfVrXHO6gIWCrxKV1ajXGD3WM0UDUL4npk9EniGr8Ppy8VPBGioiuZ06kzxUdTOf/lIoMkvaYMTNxflDZA+vbS4FHelT4Vk0+pWbs6wqlon74GLf/wiLToZhKmzxUuy7a75WIZdxUWKRVp74xgEcnuoDe27C3Ubo9i8A== 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 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=NswM4r5KNQfDxP4tMos8eW3yF0w29xh1Is0/AXnWSt8=; b=tMcSK9nsYoMec+k6LOduPC7nZTiPtfLjkd8cLOZF73PNRy/vXpY7/s34nmLfAg4I4wI1dYJRSjfjT088yzZcaP+QLR4HV/TtHYt9MKzacpmCmrFHBPNMLediwUsEqVgKiZjnknOjf0aKZ+A7ZLJsmsg6vjckthR5osiQKk3loD4= Received: from CH2PR18CA0019.namprd18.prod.outlook.com (2603:10b6:610:4f::29) by CH3PR12MB8993.namprd12.prod.outlook.com (2603:10b6:610:17b::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6678.24; Tue, 15 Aug 2023 06:17:19 +0000 Received: from CO1PEPF000044FA.namprd21.prod.outlook.com (2603:10b6:610:4f:cafe::14) by CH2PR18CA0019.outlook.office365.com (2603:10b6:610:4f::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.33 via Frontend Transport; Tue, 15 Aug 2023 06:17:19 +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 CO1PEPF000044FA.mail.protection.outlook.com (10.167.241.200) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6723.3 via Frontend Transport; Tue, 15 Aug 2023 06:17:19 +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 15.1.2507.27; Tue, 15 Aug 2023 01:17:12 -0500 From: Meng Li To: "Rafael J . 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 V2 4/7] cpufreq: Add a notification message that the highest perf has changed Date: Tue, 15 Aug 2023 14:15:43 +0800 Message-ID: <20230815061546.3556083-5-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230815061546.3556083-1-li.meng@amd.com> References: <20230815061546.3556083-1-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: CO1PEPF000044FA:EE_|CH3PR12MB8993:EE_ X-MS-Office365-Filtering-Correlation-Id: 4e0cb996-8896-4f25-3b49-08db9d5747d6 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)(346002)(396003)(136003)(39860400002)(376002)(186006)(1800799006)(82310400008)(451199021)(40470700004)(36840700001)(46966006)(426003)(8936002)(41300700001)(316002)(8676002)(36860700001)(47076005)(336012)(1076003)(2616005)(966005)(16526019)(83380400001)(26005)(6666004)(7696005)(40460700003)(478600001)(40480700001)(54906003)(110136005)(36756003)(15650500001)(86362001)(4326008)(6636002)(70586007)(70206006)(82740400003)(81166007)(356005)(5660300002)(2906002)(226483002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2023 06:17:19.4588 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4e0cb996-8896-4f25-3b49-08db9d5747d6 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: CO1PEPF000044FA.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8993 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Please refer to the ACPI_Spec for details on the highest performance and notify events of CPPC. Signed-off-by: Meng Li Link: https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html?highlight=cppc#cpc-continuous-performance-control --- drivers/acpi/processor_driver.c | 6 ++++++ drivers/cpufreq/cpufreq.c | 13 +++++++++++++ include/linux/cpufreq.h | 4 ++++ 3 files changed, 23 insertions(+) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index 4bd16b3f0781..29b2fb68a35d 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -27,6 +27,7 @@ #define ACPI_PROCESSOR_NOTIFY_PERFORMANCE 0x80 #define ACPI_PROCESSOR_NOTIFY_POWER 0x81 #define ACPI_PROCESSOR_NOTIFY_THROTTLING 0x82 +#define ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED 0x85 MODULE_AUTHOR("Paul Diefenbaugh"); MODULE_DESCRIPTION("ACPI Processor Driver"); @@ -83,6 +84,11 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, 0); break; + case ACPI_PROCESSOR_NOTIFY_HIGEST_PERF_CHANGED: + cpufreq_update_highest_perf(pr->id); + acpi_bus_generate_netlink_event(device->pnp.device_class, + dev_name(&device->dev), event, 0); + break; default: acpi_handle_debug(handle, "Unsupported event [0x%x]\n", event); break; diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 50bbc969ffe5..842357abfae6 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -2675,6 +2675,19 @@ void cpufreq_update_limits(unsigned int cpu) } EXPORT_SYMBOL_GPL(cpufreq_update_limits); +/** + * cpufreq_update_highest_perf - Update highest performance for a given CPU. + * @cpu: CPU to update the highest performance for. + * + * Invoke the driver's ->update_highest_perf callback if present + */ +void cpufreq_update_highest_perf(unsigned int cpu) +{ + if (cpufreq_driver->update_highest_perf) + cpufreq_driver->update_highest_perf(cpu); +} +EXPORT_SYMBOL_GPL(cpufreq_update_highest_perf); + /********************************************************************* * BOOST * *********************************************************************/ diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h index 172ff51c1b2a..766c83a4fae7 100644 --- a/include/linux/cpufreq.h +++ b/include/linux/cpufreq.h @@ -231,6 +231,7 @@ int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu); void refresh_frequency_limits(struct cpufreq_policy *policy); void cpufreq_update_policy(unsigned int cpu); void cpufreq_update_limits(unsigned int cpu); +void cpufreq_update_highest_perf(unsigned int cpu); bool have_governor_per_policy(void); bool cpufreq_supports_freq_invariance(void); struct kobject *get_governor_parent_kobj(struct cpufreq_policy *policy); @@ -376,6 +377,9 @@ struct cpufreq_driver { /* Called to update policy limits on firmware notifications. */ void (*update_limits)(unsigned int cpu); + /* Called to update highest performance on firmware notifications. */ + void (*update_highest_perf)(unsigned int cpu); + /* optional */ int (*bios_limit)(int cpu, unsigned int *limit); From patchwork Tue Aug 15 06:15:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Meng, Li \(Jassmine\)" X-Patchwork-Id: 713987 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85264C001B0 for ; Tue, 15 Aug 2023 06:18:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234959AbjHOGSZ (ORCPT ); Tue, 15 Aug 2023 02:18:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34708 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234978AbjHOGRe (ORCPT ); Tue, 15 Aug 2023 02:17:34 -0400 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on20614.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe5b::614]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B37A81730; Mon, 14 Aug 2023 23:17:26 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FEjduneP/OK1qJ/VWTOeIXY2tJUmChSJviS22kQorAxAlnenPHSon+zTh0TDx7a35FzG5RQ2SphQY+gui/0EtMmONxyUyqDSTS5cr8d5fwuOUy6V/l+B2SqzzGw1awzOgWwZ+TzsDtVMgqstHDe1OLIP848kuMRfS123/ozQJXzlAXiLpRjioS4OjhLHYAdTDIK2OuvQbobJ+0Fq1XY9KmqRU332TDLiCJ+b53PvUp8uy/JoqU3VCIpvc7iYhGZq48e5a1zl+Vfjn+hy/+oNIJjBgwc/xBkkU1qBZAIqWf6hrTohhlPSIatUDmXJFtqW4baS130KnxAY7N24jt6JlQ== 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=R+RQepWEpY82uXKfwKZoS1l72EUVb6pDIlmqk6YuNWs=; b=Gboqa3ZvBuOLU7PAmq7ecLazurmbO6YB6+5WxttizlDVa3sww51nIoznUBz3VYKS7utgiWYDf3BzD108tzsBL+xFtvGgxPlRNBvDVvhrQ9YqZYpjTGR9Wj8QoVa2NISYMNiAZs020BNMzHbU9XcUL38IydlHeK31Y41wEOX9xgcPBgLrhCtknCDY+vhNSD7A8qZX7seevu0ptmxU0Xvv67TE+6+cQRnPhEHebUU+SF1DOLyqxH2O4Ciru/Ed8mEtaNffz839fNWR5KlY8X/9TYY+ACYuyrJrZoDyYqtIsWtfjbtpThzPfLcf9Cr7TqSdxV0JYDtr5u02hPLACSQJPw== 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 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=R+RQepWEpY82uXKfwKZoS1l72EUVb6pDIlmqk6YuNWs=; b=eJVdBTNvK+7Lz8uU6HNitsYGey7bgk96Qq65tmCGQtMf4GdFLDnR1A2DWfamcqqOgDmvTKjbRLfCnqizOteOH8aehVmq8RI70BmRowWe+Umw6DwJTzfcW8JvN9ZAJAlVlTNI1pSUj1Kg7fZZW9YXGbHs+UJkn7DTCtVT5dk1jaI= Received: from MWH0EPF00056D0D.namprd21.prod.outlook.com (2603:10b6:30f:fff2:0:1:0:6) by CY5PR12MB6300.namprd12.prod.outlook.com (2603:10b6:930:f::8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6678.26; Tue, 15 Aug 2023 06:17:23 +0000 Received: from CO1PEPF000044F8.namprd21.prod.outlook.com (2a01:111:f403:f807::1) by MWH0EPF00056D0D.outlook.office365.com (2603:1036:d20::b) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6699.11 via Frontend Transport; Tue, 15 Aug 2023 06:17:22 +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 15.20.6723.3 via Frontend Transport; Tue, 15 Aug 2023 06:17:22 +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 15.1.2507.27; Tue, 15 Aug 2023 01:17:17 -0500 From: Meng Li To: "Rafael J . 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 V2 5/7] cpufreq: amd-pstate: Update AMD Pstate Preferred Core ranking dynamically Date: Tue, 15 Aug 2023 14:15:44 +0800 Message-ID: <20230815061546.3556083-6-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230815061546.3556083-1-li.meng@amd.com> References: <20230815061546.3556083-1-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: CO1PEPF000044F8:EE_|CY5PR12MB6300:EE_ X-MS-Office365-Filtering-Correlation-Id: 4900fa3d-4163-4e40-cb75-08db9d5749c3 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)(39860400002)(396003)(136003)(376002)(346002)(82310400008)(186006)(1800799006)(451199021)(46966006)(36840700001)(40470700004)(40480700001)(82740400003)(356005)(81166007)(36756003)(86362001)(40460700003)(15650500001)(16526019)(478600001)(6666004)(2906002)(7696005)(1076003)(2616005)(26005)(70206006)(426003)(336012)(83380400001)(316002)(54906003)(41300700001)(110136005)(70586007)(6636002)(5660300002)(8676002)(8936002)(4326008)(36860700001)(47076005)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2023 06:17:22.6934 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4900fa3d-4163-4e40-cb75-08db9d5749c3 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: CY5PR12MB6300 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Preferred core rankings can be changed dynamically by the platform based on the workload and platform conditions and accounting for thermals and aging. When this occurs, cpu priority need to be set. Signed-off-by: Meng Li --- drivers/cpufreq/amd-pstate.c | 32 ++++++++++++++++++++++++++++++++ include/linux/amd-pstate.h | 1 + 2 files changed, 33 insertions(+) diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index d02305675f66..8a8e4ecb1b5c 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -315,6 +315,7 @@ static int pstate_init_perf(struct amd_cpudata *cpudata) WRITE_ONCE(cpudata->nominal_perf, AMD_CPPC_NOMINAL_PERF(cap1)); WRITE_ONCE(cpudata->lowest_nonlinear_perf, AMD_CPPC_LOWNONLIN_PERF(cap1)); WRITE_ONCE(cpudata->lowest_perf, AMD_CPPC_LOWEST_PERF(cap1)); + WRITE_ONCE(cpudata->prefcore_highest_perf, AMD_CPPC_HIGHEST_PERF(cap1)); return 0; } @@ -336,6 +337,7 @@ static int cppc_init_perf(struct amd_cpudata *cpudata) WRITE_ONCE(cpudata->lowest_nonlinear_perf, cppc_perf.lowest_nonlinear_perf); WRITE_ONCE(cpudata->lowest_perf, cppc_perf.lowest_perf); + WRITE_ONCE(cpudata->prefcore_highest_perf, cppc_perf.highest_perf); if (cppc_state == AMD_PSTATE_ACTIVE) return 0; @@ -744,6 +746,34 @@ static void amd_pstate_init_prefcore(void) schedule_work(&sched_prefcore_work); } +static void amd_pstate_update_highest_perf(unsigned int cpu) +{ + struct cpufreq_policy *policy; + struct amd_cpudata *cpudata; + u32 prev_high = 0, cur_high = 0; + u64 highest_perf; + int ret; + + if (!prefcore) + return; + + ret = amd_pstate_get_highest_perf(cpu, &highest_perf); + if (ret) + return; + + policy = cpufreq_cpu_get(cpu); + cpudata = policy->driver_data; + cur_high = highest_perf; + prev_high = READ_ONCE(cpudata->prefcore_highest_perf); + + if (prev_high != cur_high) { + WRITE_ONCE(cpudata->prefcore_highest_perf, cur_high); + sched_set_itmt_core_prio(cur_high, cpu); + } + + cpufreq_cpu_put(policy); +} + static int amd_pstate_cpu_init(struct cpufreq_policy *policy) { int min_freq, max_freq, nominal_freq, lowest_nonlinear_freq, ret; @@ -1468,6 +1498,7 @@ static struct cpufreq_driver amd_pstate_driver = { .suspend = amd_pstate_cpu_suspend, .resume = amd_pstate_cpu_resume, .set_boost = amd_pstate_set_boost, + .update_highest_perf = amd_pstate_update_highest_perf, .name = "amd-pstate", .attr = amd_pstate_attr, }; @@ -1482,6 +1513,7 @@ static struct cpufreq_driver amd_pstate_epp_driver = { .online = amd_pstate_epp_cpu_online, .suspend = amd_pstate_epp_suspend, .resume = amd_pstate_epp_resume, + .update_highest_perf = amd_pstate_update_highest_perf, .name = "amd-pstate-epp", .attr = amd_pstate_epp_attr, }; diff --git a/include/linux/amd-pstate.h b/include/linux/amd-pstate.h index 446394f84606..fa86bc953d3e 100644 --- a/include/linux/amd-pstate.h +++ b/include/linux/amd-pstate.h @@ -70,6 +70,7 @@ struct amd_cpudata { u32 nominal_perf; u32 lowest_nonlinear_perf; u32 lowest_perf; + u32 prefcore_highest_perf; u32 max_freq; u32 min_freq; From patchwork Tue Aug 15 06:15:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Meng, Li \(Jassmine\)" X-Patchwork-Id: 713986 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 98010C001B0 for ; Tue, 15 Aug 2023 06:20:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234955AbjHOGUB (ORCPT ); Tue, 15 Aug 2023 02:20:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235066AbjHOGTW (ORCPT ); Tue, 15 Aug 2023 02:19:22 -0400 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on2087.outbound.protection.outlook.com [40.107.220.87]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 51EDC2D42; Mon, 14 Aug 2023 23:17:38 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=cwbS2qY1le5pxV+06Ofjn+5LOoqb1/kBf9GJVEXq/mLto+Y0/i5kSwivfxTTu5QUiHNwDP9u5cILIYHd2aD8qhXXzStF/eFBIbiIAvcyTTSXYBciPv1CWdJrbvKVp7EyFiGzB85nLXnt3AluVFSBYad0jXome67x4OEpa7b6HGaENNyOmaaQe9TTBnUXyJT2m6VM2Lk8E+ylVO2oJQ8Bc+ozEvu+gAQ2u/y8Z7aDycQdqFSCZH4HbbYYXIwmqB5xLFBrhpNNhh9htppKxH+fHpVnV3+vpGy5ikyq4PNL9Lh5TOaaeKFZ3n5u+ICoROZNQZ5798QwdqItKehDf+mdHw== 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=UatvUdnAHKDm3NQ3MVcDdoeY7zuTYCcF2McOkq3aFNQ=; b=QRwcroT9IMFWNxEIcUcX6UT5m3WtExObUtsbYVllsFV5NMY9lkM4muWK62pcagqUpbUMyg3n0IqgPwhPp6AVRqnXTOkRwNd2x7fjKuTv1zXAZnoRTF28XtqlA4ztbCUgPfD5HCfj9JsLF4sgQdZCcx2lQ5q7cC3F3lMl2DSErnHHxjL70NdXIRb+v1tAOCs2leaTjpECVdv0x2TrFAKGATrMyf1OJokHu+mtBGmta4uuVEcUMtxtGFRLTyUD5pbN77HyXB/WlasojjRiBMxQKwQXOLSk6cyGIlpCWX7QCCYlEmyuF4TpC7UGnmckD4BRkSgfVBINqejG6+Odw8avIQ== 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 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=UatvUdnAHKDm3NQ3MVcDdoeY7zuTYCcF2McOkq3aFNQ=; b=pSSn3YUckvG4Tb99X0V6xppmeeuIltFlybJOUnwGqa54gM5pRVCpluxwlf6mSUP03Ezez1dxpA4U0fx5ft7YZneaMKVi+ITAnoeUtfYeTHOrtFtbnNbtTHXJ6WWuDJZ5AqusV3MMaFewDqGUGzkZ262aw61hC7Ti/FJHFL5jVvo= Received: from MW4P223CA0004.NAMP223.PROD.OUTLOOK.COM (2603:10b6:303:80::9) by CH2PR12MB4103.namprd12.prod.outlook.com (2603:10b6:610:7e::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6678.26; Tue, 15 Aug 2023 06:17:33 +0000 Received: from CO1PEPF000044F9.namprd21.prod.outlook.com (2603:10b6:303:80:cafe::a4) by MW4P223CA0004.outlook.office365.com (2603:10b6:303:80::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.33 via Frontend Transport; Tue, 15 Aug 2023 06:17:32 +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 CO1PEPF000044F9.mail.protection.outlook.com (10.167.241.199) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6723.3 via Frontend Transport; Tue, 15 Aug 2023 06:17:32 +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 15.1.2507.27; Tue, 15 Aug 2023 01:17:22 -0500 From: Meng Li To: "Rafael J . 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 V2 6/7] Documentation: amd-pstate: introduce AMD Pstate Preferred Core Date: Tue, 15 Aug 2023 14:15:45 +0800 Message-ID: <20230815061546.3556083-7-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230815061546.3556083-1-li.meng@amd.com> References: <20230815061546.3556083-1-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: CO1PEPF000044F9:EE_|CH2PR12MB4103:EE_ X-MS-Office365-Filtering-Correlation-Id: a918cc8e-b72e-43a6-d2e9-08db9d574fc2 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)(39860400002)(136003)(346002)(376002)(396003)(1800799006)(186006)(82310400008)(451199021)(40470700004)(46966006)(36840700001)(40480700001)(40460700003)(356005)(478600001)(81166007)(82740400003)(8676002)(6666004)(8936002)(4326008)(110136005)(70206006)(41300700001)(316002)(6636002)(54906003)(70586007)(36860700001)(83380400001)(47076005)(7696005)(2616005)(1076003)(26005)(426003)(336012)(16526019)(86362001)(2906002)(5660300002)(36756003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2023 06:17:32.7378 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a918cc8e-b72e-43a6-d2e9-08db9d574fc2 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: CO1PEPF000044F9.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4103 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Introduce AMD Pstate Preferred Core. check preferred core state: $ cat /sys/devices/system/cpu/amd-pstate/prefcore_state Signed-off-by: Meng Li --- Documentation/admin-guide/pm/amd-pstate.rst | 54 +++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/Documentation/admin-guide/pm/amd-pstate.rst b/Documentation/admin-guide/pm/amd-pstate.rst index 1cf40f69278c..ef2b69935311 100644 --- a/Documentation/admin-guide/pm/amd-pstate.rst +++ b/Documentation/admin-guide/pm/amd-pstate.rst @@ -353,6 +353,48 @@ is activated. In this mode, driver requests minimum and maximum performance level and the platform autonomously selects a performance level in this range and appropriate to the current workload. +AMD Pstate Preferred Core +================================= + +The core frequency is subjected to the process variation in semiconductors. +Not all cores are able to reach the maximum frequency respecting the +infrastructure limits. Consequently, AMD has redefined the concept of +maximum frequency of a part. This means that a fraction of cores can reach +maximum frequency. To find the best process scheduling policy for a given +scenario, OS needs to know the core ordering informed by the platform through +highest performance capability register of the CPPC interface. + +``AMD Pstate Preferred Core`` enable the scheduler to favor scheduling on cores +can be get a higher frequency with lower voltage under preferred core. +And it has the ability to dynamically change the preferred core based on the +workload and platform conditions and accounting for thermals and aging. + +The priority metric will be initialized by the AMD Pstate driver. The AMD Pstate +driver will also determine whether or not ``AMD Pstate Preferred Core`` is +supported by the platform. + +AMD Pstate driver will provide an initial core ordering when the system boots. +The platform uses the CPPC interfaces to communicate the core ranking to the +operating system and scheduler to make sure that OS is choosing the cores +with highest performance firstly for scheduling the process. When AMD Pstate +driver receives a message with the highest performance change, it will +update the core ranking and set the cpu's priority. + +AMD Preferred Core Switch +================================= +Kernel Parameters +----------------- + +``AMD Pstate Preferred Core`` has two states: enable and disable. +Enable/disable states can be chosen by different kernel parameters. +Default enable ``AMD Pstate Preferred Core``. + +``amd_prefcore=disable`` + +If ``amd_prefcore=disable`` is passed to kernel command line option +then disable ``AMD Pstate Preferred Core`` if platform can support +the Preferred Core feature. + User Space Interface in ``sysfs`` - General =========================================== @@ -385,6 +427,18 @@ control its functionality at the system level. They are located in the to the operation mode represented by that string - or to be unregistered in the "disable" case. +``prefcore`` + Preferred Core state of the driver: "enabled" or "disabled". + + "enabled" + Enable the AMD Preferred Core. + + "disabled" + Disable the AMD Preferred Core + + + This attribute is read-only to check the state of Preferred Core. + ``cpupower`` tool support for ``amd-pstate`` ===============================================