From nobody Sun Dec 14 08:08:31 2025 Received: from NAM12-MW2-obe.outbound.protection.outlook.com (mail-mw2nam12on2052.outbound.protection.outlook.com [40.107.244.52]) (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 16AC428CF5B; Thu, 15 May 2025 22:52:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.244.52 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747349566; cv=fail; b=Rx4Ehb0oK6pqKZ4LD27xdfoVm7bKJGKihB9S0IshlK9FiMNj3aHqK9o4PfO0b1j/fbeXpnSVVZi04ka/SCnQbRVZlNzLsLoHEqBUREqu4qTZfCwCV0pGhzqJl81ZohJEJ37gTAlWgsTEWIeHXZUO5elptJwTT7v564yEzt7d3B0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747349566; c=relaxed/simple; bh=0/iDnoAeqpM+vJ9H5LPo6A1avDG8P61CkYy/phjGLOU=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=EAYVysgcz8M5vVglWuou/S5454bM9IsLczf9JjK8NbvmmDuNthvc21xMA9hT4p8i3rIpZv67PM5ln3u9qcrbEi8OwTSzS7mT247z8D0pJDwjElL13ZjJ83M+B/n8RuFqQC9wCgsBOUReGHtBTzPimo5hkH0OxQOcSIUHC59ZSVE= 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=V8MyZMfn; arc=fail smtp.client-ip=40.107.244.52 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="V8MyZMfn" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=wtlj3/Gw9CwgTgI/hnlYvpNtoR3ZGgixeGF/RtE1hEvO5XO53KdV0hgG89XIEOU15wvvowwMNb4wB0RDJ/StvJ19vqxrvV63Rb61ElCBpFTIMevEXPjuhU2vEQ23XcGCdaqOWF8Qyrv4yvBaTmLkcoRmPv20RkJ0ILgEm8Qu+vM20W9R4eoyhuHY4xkFn6q7ctbn5gNwozQ2l/wMfHWYuK01a4FdLUyqYG/9jhgDQ9UxJE9+/ArgkiKzgLzCTHq+f+6VQ1fjUWRHj3os5Y/q0koEqzWVA/vLalx7gPwU/zja/u9aldd4ffAHcKuip3qxlkwndHI1qgEDCr8yOOWF1A== 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=1cyQCtr8wFokSYAvV/dk7NVVNUo65eWk53+zUQGPfMM=; b=qVhyrSY1Ek+ZIj/hWTgkvTmaAi8rAJZxvPxg41FB40udZWwStwLz21udUmW2nBlVef/K/LakJFCFyWgSnoLU3V/Ly+k9KU9XYeuvgonguRN6EizoEEhEWjtsC3VPBsONO08TZ2P3cxDzoog7r7l1jYaBCx0DOTerdHajnoIC6IW+JBR90ZYmXBqAQ7QbIhGyA9eftK3X44DLVv2V/E6Pzx8g4HgUajnmTa0tW2W7rZtjcZaI8ok6j0WJPY7KwHRW1yUpM8yBw2e17Fq/1wp2jY5/BYP7zsf2MX9qaGs4F0HmhWfichLEmQ3TkHq1uNzMD5LU6PdhzfI8dyX8573LnQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=lwn.net 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=1cyQCtr8wFokSYAvV/dk7NVVNUo65eWk53+zUQGPfMM=; b=V8MyZMfnQiVq1fwTOKS6p6lFRMys1N1z4ItJdWUMzr+j5HdHy3xCFapc8acDHSGQflW3Ghdhm1eRnnUIpmQF2KafMXGyc86Lv8EOefd2MczAqMWBvvUeO6gTCKskTDuAOun8iS3qDjG6cGiLE9u1OQ8QnmmJd9g3ha7neeNrLPM= Received: from BN9PR03CA0358.namprd03.prod.outlook.com (2603:10b6:408:f6::33) by PH7PR12MB8154.namprd12.prod.outlook.com (2603:10b6:510:2b9::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8722.33; Thu, 15 May 2025 22:52:41 +0000 Received: from BN1PEPF00004686.namprd03.prod.outlook.com (2603:10b6:408:f6:cafe::ed) by BN9PR03CA0358.outlook.office365.com (2603:10b6:408:f6::33) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8699.29 via Frontend Transport; Thu, 15 May 2025 22:52:40 +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 BN1PEPF00004686.mail.protection.outlook.com (10.167.243.91) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8722.18 via Frontend Transport; Thu, 15 May 2025 22:52:40 +0000 Received: from bmoger-ubuntu.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, 15 May 2025 17:52:37 -0500 From: Babu Moger To: , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v13 02/27] x86/resctrl: Add ABMC feature in the command line options Date: Thu, 15 May 2025 17:51:47 -0500 Message-ID: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: 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: 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: BN1PEPF00004686:EE_|PH7PR12MB8154:EE_ X-MS-Office365-Filtering-Correlation-Id: 8937266b-fff9-476d-40fa-08dd94033273 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|82310400026|376014|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?GXXwuns4yVkZINtHeikLBORvFX3yEYpU5UYA/NOugon0N9eyaAIfC+MPnCuB?= =?us-ascii?Q?RbmCJUTWiJZV+1HiJ17D6HsAvIZFEWznjOk0viRuwx13sRxf5ZARtIvx4FNy?= =?us-ascii?Q?tFqOYDSEIetXXfnp0CgeHPGZtMYBkFTtd5YT2Wt+ehtvChFPbKRzH1SeElvP?= =?us-ascii?Q?lpejjamnOy3UaSNaQiNoiJt8j6892y6t5kd58zeYg9oGnIHZWIXKHChWoe3B?= =?us-ascii?Q?hdGrOQ4usOOq7UqC4hZCfGwaH8VdVSyaYL/J9fWaksH0Cz9zsMW3Ncozaryq?= =?us-ascii?Q?RO961xVzB0nLf0FBknQKaJ04QAedHRoqD8uURQYnnsEzbWzbJq9emiYS0dfl?= =?us-ascii?Q?HfUGKD/Cxchq9b0AU5CJ+FhVPsQAovIIziSQqs883BV9Rtev/igQ/xLSS8d9?= =?us-ascii?Q?DnPeiQ8Gt7E9rGXafhANkDVDZnted1qwnjpKfKdKraBAtJ8N8hK8V/wvS4AK?= =?us-ascii?Q?zqGXp+8MzJ0oEGpoTIJgZriS1GBQDv/R5MwcXxuTE/ZgbtPMv7B4SGW8Mmn+?= =?us-ascii?Q?jIsSJYcFUuoPiSTOLFaaH++syAfxGXw0WgBLpUKwGE61mGh/127YQitN3LYY?= =?us-ascii?Q?QPw8Ijs6VtQWZVFLAedrV2E4kq2Y68lxJkgX1OfSVosF01vszvwg/IliKF/N?= =?us-ascii?Q?XGUCknAjWhxR0/Np7V93gyEj54vlvkBbf1/TSDC/gq5qOiG1s3rWoi8zpWIO?= =?us-ascii?Q?zS80mRKFlTR9b1oHxq2oiBO6F0t8UOT5OTxo6z5eIIEXJnOyGnKKk1DkZ3pz?= =?us-ascii?Q?ZFHecfn3dfpxNat9YOB8zXAQJ+7nxLxRQvTkDtav8kWCxArY1+LpgnuB5RF9?= =?us-ascii?Q?PX4ZbGCOERmI3KJnJAmd5jX+m3OHWvh3O57IPImTmYhjyMBxYMLtqbImG7Md?= =?us-ascii?Q?kVpgiwXIvRZ90Gt7ElNGXlpcxwcQrJiKrVvE8/WrB+nte4MgccqNNA3So0q/?= =?us-ascii?Q?zhpz4LhEo1b9PIf5VMex24rzch0xk44eGTqOT2eZ9TibgNfhIi2BKt/2RDXm?= =?us-ascii?Q?LNQ07QHW3cDYQwQg4Fl67hl/kBUUr7niwCoFNdAUKSPDHAjq2mRxHz4Ee4G9?= =?us-ascii?Q?V0oc2RZd9wPuXoHKvA9LMVfjsDT19TlMoZwIpWuhfrPdCqTaAUeUA0lhu1lO?= =?us-ascii?Q?gLOUVXdE5/+xQqUc2VlnsPtIHJUIrNyUTDmtusm22z1IEs0YqvVgg9j5WtbS?= =?us-ascii?Q?cfDW10ZoBccPtk9R8u/5Mp0hveN16HtCbHrxsSSNRHV2knmTnMoHVIkpV4nH?= =?us-ascii?Q?caIozI/XkXjJ5Y1Zeu1rja6nDeXko6c5CuN77GQ3Y1oloGkYVAV70QwxztUZ?= =?us-ascii?Q?oZu6LaTQzW4ktkZ3YSxW2aCWcSNTXl7TW6DxNU6hEejUDgoqVXRc5PCNHvuX?= =?us-ascii?Q?H0sJGsfWsIErT/qXlEsdgg0GWklb6hr1jMpa4Q27xMaZ777OENc2xftAhF6X?= =?us-ascii?Q?/c66SWJpqKY3Q1bjZJiKJt/ynqC37wdWt5ka5nfPKSm6MZHMjI/op9AUPQ0J?= =?us-ascii?Q?u6NOepYbkScWazSB1CHDG6Kg0ysgfyTcoVy2?= 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)(1800799024)(7416014)(82310400026)(376014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 May 2025 22:52:40.8285 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8937266b-fff9-476d-40fa-08dd94033273 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: BN1PEPF00004686.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB8154 Content-Type: text/plain; charset="utf-8" Add the command line option to enable or disable exposing the ABMC (Assignable Bandwidth Monitoring Counters) hardware feature to resctrl. Signed-off-by: Babu Moger --- v13: Removed the Reviewed-by as the file resctrl.rst is moved to Documentation/filesystems/resctrl.rst. In that sense patch has changed. v12: No changes. v11: No changes. v10: No changes. v9: No code changes. Added Reviewed-by. v8: Commit message update. v7: No changes v6: No changes v5: No changes v4: No changes v3: No changes v2: No changes --- Documentation/admin-guide/kernel-parameters.txt | 2 +- Documentation/filesystems/resctrl.rst | 1 + arch/x86/kernel/cpu/resctrl/core.c | 2 ++ 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentatio= n/admin-guide/kernel-parameters.txt index d9fd26b95b34..ed9761bb2e4a 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5988,7 +5988,7 @@ rdt=3D [HW,X86,RDT] Turn on/off individual RDT features. List is: cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp, - mba, smba, bmec. + mba, smba, bmec, abmc. E.g. to turn on cmt and turn off mba use: rdt=3Dcmt,!mba =20 diff --git a/Documentation/filesystems/resctrl.rst b/Documentation/filesyst= ems/resctrl.rst index c7949dd44f2f..c97fd77a107d 100644 --- a/Documentation/filesystems/resctrl.rst +++ b/Documentation/filesystems/resctrl.rst @@ -26,6 +26,7 @@ MBM (Memory Bandwidth Monitoring) "cqm_mbm_total", "cqm_= mbm_local" MBA (Memory Bandwidth Allocation) "mba" SMBA (Slow Memory Bandwidth Allocation) "" BMEC (Bandwidth Monitoring Event Configuration) "" +ABMC (Assignable Bandwidth Monitoring Counters) "" =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D =20 Historically, new features were made visible by default in /proc/cpuinfo. = This diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 224bed28f341..15a1dfa92923 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -704,6 +704,7 @@ enum { RDT_FLAG_MBA, RDT_FLAG_SMBA, RDT_FLAG_BMEC, + RDT_FLAG_ABMC, }; =20 #define RDT_OPT(idx, n, f) \ @@ -729,6 +730,7 @@ static struct rdt_options rdt_options[] __ro_after_ini= t =3D { RDT_OPT(RDT_FLAG_MBA, "mba", X86_FEATURE_MBA), RDT_OPT(RDT_FLAG_SMBA, "smba", X86_FEATURE_SMBA), RDT_OPT(RDT_FLAG_BMEC, "bmec", X86_FEATURE_BMEC), + RDT_OPT(RDT_FLAG_ABMC, "abmc", X86_FEATURE_ABMC), }; #define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options) =20 --=20 2.34.1