From nobody Wed Nov 27 10:31:08 2024 Received: from NAM10-DM6-obe.outbound.protection.outlook.com (mail-dm6nam10on2077.outbound.protection.outlook.com [40.107.93.77]) (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 56CB41E1330; Thu, 10 Oct 2024 19:37:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.93.77 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728589073; cv=fail; b=bE9+dZ2V/DuxpBa2NeV6UMv5hl54fR0f4ZGzjApTV99Rtbvdx9vY/sb4SGqon1p5y/9sdqLkSOHOKLYn2xfSuQhjlZbYWO79IWBWDKRpl0GgWwiFGshzDcQa+Oz2H31rph3NuDM2saVn5YsKkI5EI8o0kwFXNRHbrIR7vTu4lGU= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728589073; c=relaxed/simple; bh=cc4FYa/Vuesa/XyVg3MKYbcElbdt0wJAvPFjdD24OWE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=e33efEkXxZEyw/zVeXbp2e4ebwgTvGIWsaxRQ5vayxELyTaUhCZCRE3yPpXf2hpduvH6XTfE7pvAjwKDKHhPrKzdRj4P8TVuKHYtf3KRoJ4WzyZK1WYxvaYonJZ1/xucbg7aQXRcm9E2ARY1+X7a6IYkQqv5N4VJZV1YGCB4zMU= 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=sXoP4GWe; arc=fail smtp.client-ip=40.107.93.77 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="sXoP4GWe" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=BxVKNWjDC+2dhCdlKUogGhA/7Zcp+tB23u9qFBhn7gDOvle0AsTicqLOhLV3zIO7koywGB6+M++94+L5bMQyFqnnzF/R242/eClNtZxW/lWNx38XrRnOOteh8wADEv1Li7T0UjXY03/NqpYCMs+KK3OBqlVoAJ1K80TiFBlchLApxmKGZ6zNbuHVQgMSQg+yH1A3cRhLuDQV9t6mpJuPqyXV4UUSAtd00M+WXrI36RkqDFhy1pNPqH4Uj5pHvwhVdRbbwkcH/svhB5m5CJ6LTJ5bszjK75MTRjjCeHvUeyq0tWJl0WjluAA3DBNwWaeKX01Dpd6he0rMCt4GwtKG4Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=sfg4dBKIC3Zfil42gpuoofN+BPB+hdfEIuvwNTO4J74=; b=DQ2PQwCUzkFF1+6ci7vCVmhWNe7EJtPSiu3bQQNgSoo8xmKuRkxh+1diWFnjt3h6KEEJAq1zoYiXJA3anFjBZK2SwVEB6cA9lHad+HBNRZQ0xulFLE1S2pYvVi5eC8siTAFLx9a4dRWniQd87C600RkS4INbBMpzHjBukI6Br8yiTjmlE9GEPOcuxyNKrQDaAF5TqFSDEm8p9e+vtRTUil5NW9fMYVGw0W+vhKEgJEvAyr8s2ZxvvoPoCuOWZJQSuAWwMz4Bp00qFHokE082O2RB3BiRn7/93iC+G1rfcSvRxnqO/oeGQuonzKzSj71uNp+RbF5c9SWEppCfM5lCkw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=alien8.de 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=sfg4dBKIC3Zfil42gpuoofN+BPB+hdfEIuvwNTO4J74=; b=sXoP4GWehzpRabFB3c4MFH4H6jmJy7KnwmeoGUdgOvH9FU5TTpgF/KI6Umt+NbHkxGBB5sG4iOriWjUOHCojIj3DLLDoDdyiNqJJGpYsQhj381xvRxg3/lQztfyxlySiuDQfWdAb4kfvoLNDV3ZUdLyAKCzc3RW25GzqibknAek= Received: from SA1P222CA0167.NAMP222.PROD.OUTLOOK.COM (2603:10b6:806:3c3::15) by SN7PR12MB7855.namprd12.prod.outlook.com (2603:10b6:806:343::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8048.18; Thu, 10 Oct 2024 19:37:43 +0000 Received: from SA2PEPF000015C7.namprd03.prod.outlook.com (2603:10b6:806:3c3:cafe::cf) by SA1P222CA0167.outlook.office365.com (2603:10b6:806:3c3::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8048.20 via Frontend Transport; Thu, 10 Oct 2024 19:37:43 +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 SA2PEPF000015C7.mail.protection.outlook.com (10.167.241.197) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8048.13 via Frontend Transport; Thu, 10 Oct 2024 19:37:43 +0000 Received: from AUS-P9-MLIMONCI.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 15.1.2507.39; Thu, 10 Oct 2024 14:37:41 -0500 From: Mario Limonciello To: Borislav Petkov , Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= CC: , "Gautham R . Shenoy" , "Mario Limonciello" , Perry Yuan , , , , , "Shyam Sundar S K" Subject: [PATCH v2 03/13] x86/cpufeatures: add X86_FEATURE_WORKLOAD_CLASS feature bit Date: Thu, 10 Oct 2024 14:36:55 -0500 Message-ID: <20241010193705.10362-4-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010193705.10362-1-mario.limonciello@amd.com> References: <20241010193705.10362-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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: SA2PEPF000015C7:EE_|SN7PR12MB7855:EE_ X-MS-Office365-Filtering-Correlation-Id: 6b330fe6-0e08-4f34-c7db-08dce96302e3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?9Jup9iaUe/+PRvznZ5mUpPO0+CxH8WTbEPvRYq+eltDhmxvm3fpTX7+Unea1?= =?us-ascii?Q?ZGyVq8B+n79cgb4AJZLPWJH5DyovI8vLEKNm0Zqyp/NU+IF3qNOaRg8TK8wp?= =?us-ascii?Q?2lkBlCAo3LoRYPMG1s/fZM2gdW/iM0Qcjs4MV5tzKC4+OCCevPYCGPx7cEEd?= =?us-ascii?Q?g/4bQ8cEXksk0ZuEDCEmZZM/yXp6IULzAcZPLuqmG15BMs4efJpjFS4zcjhm?= =?us-ascii?Q?oqSa0EG8OCo1KL4EfZBG7Miu2D44yO8Ep8aCkeTgRipeTemCkvi0xGatH423?= =?us-ascii?Q?gHNWy7cxdHF0ghlFeAz+4UZkLCYmw3PQryDJNF3cSIH2Y+WC/NKd0ZJgmybs?= =?us-ascii?Q?y34kv8+/w0RxM4YlqnxNo4/YfS+ncf+bA3Jz6T5h64nUb2cwugyiQlOZEnSM?= =?us-ascii?Q?vp2dnOya2e51x6uiLm9VrP/9KUXNYdDDuqYfGbddVChVqBXz57hNYYC6NrWF?= =?us-ascii?Q?xHx+VmbAOlw8MT3ihyv67JS307ZnidVqXyA4afVUFQY2P4P6b8kpkgXse3GD?= =?us-ascii?Q?RX9S2rpQy2pTP+lp4y5fsRTC2uMaPimoc1GjYAtqtQlW+SyC3oY5sUmwiY7w?= =?us-ascii?Q?Sb9ixK9IMZrP/SkHdjgybON680f8qKR1F2EsfoqF0tWnXdhnM6aMvngUF3RY?= =?us-ascii?Q?LhDpTBLUv84P2BH24xs0GzZLxV8I4pN4fLq7LbG4innLJOsY3K7u1YeCVhCo?= =?us-ascii?Q?FoKjHVBo+0SO4z8FqbQ4Ci4z+J++QlPpDQeY/c2kT/m9pk1nlKn/VOAX/ekT?= =?us-ascii?Q?sKHxI0e+M3XhFQLkDr7F6prMHypKz9yuyuQixzHoR2daFLp7Vxu8WWYA7jRK?= =?us-ascii?Q?GmffcHFTPX2i9LRHfG8PYkliOtuFf0T1GoIixtpvQ4hfgEviTwnWNooXXydF?= =?us-ascii?Q?krWFwznzBBOPR6OYZPYyLZhJyCHfVlstlINhMSf84yDLrxOJ81sato2uCia+?= =?us-ascii?Q?KAv44RIG1/5PXaZmKIHO5LlYBDjgm7PskytevltRJ7Sp8Ut+Gq0Klzmj20F2?= =?us-ascii?Q?tt5xq6PKXR49VZ3zalmNLqmljUwgggl8drJGK0/BTpE8PsSyMku3ywUM3yru?= =?us-ascii?Q?VXRcMlaqiryYcZudatwaQBkNS3Uy06fVym+fsaBU54ah+n0OhK2wpAjp0lvb?= =?us-ascii?Q?PQJe2lO+7rdC0TGiNTGTOQ+1LUmS3nFWU69rd1ryfo3tUEVaItY+dWI/4wnH?= =?us-ascii?Q?Enkw0dWkBgwSOVtesqmxYEesuXgwszgltVmQXU+lLAZP4mTufN/t8Ow9pVr6?= =?us-ascii?Q?4+LYzhjlxezO6PdJWdARBNg3hT+K1e9XVlAorYG9YqbYY4zJ73QSiDTeAS9A?= =?us-ascii?Q?lKw1aHnEu5nJeIa8m7mS0n8H3OkTGjKd2xADDmDO6ZbjKlY3ONH5WD9+bwEd?= =?us-ascii?Q?zX0lX0bD5Ttjom+7w1TSA/rDozDs?= 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:(13230040)(36860700013)(1800799024)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Oct 2024 19:37:43.8502 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6b330fe6-0e08-4f34-c7db-08dce96302e3 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: SA2PEPF000015C7.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7855 Content-Type: text/plain; charset="utf-8" From: Perry Yuan Add new feature bit that indicates support for workload based heuristic feedback to OS for scheduling decisions. When the bit set, threads are classified during runtime into enumerated classes. The classes represent thread performance/power characteristics that may benefit from special scheduling behaviors. Signed-off-by: Perry Yuan Signed-off-by: Mario Limonciello --- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/kernel/cpu/scattered.c | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpuf= eatures.h index cea1ed82aeb4..3e8e67b8ec7a 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -474,6 +474,7 @@ #define X86_FEATURE_CLEAR_BHB_LOOP_ON_VMEXIT (21*32+ 4) /* Clear branch hi= story at vmexit using SW loop */ #define X86_FEATURE_FAST_CPPC (21*32 + 5) /* AMD Fast CPPC */ #define X86_FEATURE_HETERO_CORE_TOPOLOGY (21*32 + 6) /* Heterogeneous Core= Topology */ +#define X86_FEATURE_WORKLOAD_CLASS (21*32 + 7) /* Workload Classification = */ =20 /* * BUG word(s) diff --git a/arch/x86/kernel/cpu/scattered.c b/arch/x86/kernel/cpu/scattere= d.c index 3bba55323163..b6547bab9e23 100644 --- a/arch/x86/kernel/cpu/scattered.c +++ b/arch/x86/kernel/cpu/scattered.c @@ -49,6 +49,7 @@ static const struct cpuid_bit cpuid_bits[] =3D { { X86_FEATURE_MBA, CPUID_EBX, 6, 0x80000008, 0 }, { X86_FEATURE_SMBA, CPUID_EBX, 2, 0x80000020, 0 }, { X86_FEATURE_BMEC, CPUID_EBX, 3, 0x80000020, 0 }, + { X86_FEATURE_WORKLOAD_CLASS, CPUID_EAX, 22, 0x80000021, 0 }, { X86_FEATURE_PERFMON_V2, CPUID_EAX, 0, 0x80000022, 0 }, { X86_FEATURE_AMD_LBR_V2, CPUID_EAX, 1, 0x80000022, 0 }, { X86_FEATURE_AMD_LBR_PMC_FREEZE, CPUID_EAX, 2, 0x80000022, 0 }, --=20 2.43.0