From mboxrd@z Thu Jan 1 00:00:00 1970 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 0E14CC38145 for ; Wed, 7 Sep 2022 18:03:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230159AbiIGSDU (ORCPT ); Wed, 7 Sep 2022 14:03:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230382AbiIGSCc (ORCPT ); Wed, 7 Sep 2022 14:02:32 -0400 Received: from NAM11-CO1-obe.outbound.protection.outlook.com (mail-co1nam11on2064.outbound.protection.outlook.com [40.107.220.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3294FC00D5; Wed, 7 Sep 2022 11:02:09 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KeWc6riwbtqrHjY1DoJfc71z6Nl28NfcfUc82+u5HiENI2696RAcf3hgHc+4mRClV9zwEDapfTs945s5WJ1Gi1D3vU9cSpattqubPcO0RfF4qYRhXADHPET0PfAiH8Ouj8VyexnKVS17Q/ljBVVldSAqUcdin29KWamEomMZi+3VYUg6USj16ogXK/9PRNzVNq4ZBZLWzN/yPrjfD2z+sJTnnsY38OVOGe33qOjcDEcbtN88EqsTGRMaPsa5N647PdOEBBRBFf3/bVYUg+/xnLzTfhOES15Mn5VxGVVIZlng/5ny14NjM7csP2dtFwZcgtPtp/cfrkCZ6sgkmPyMSg== 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=+42HLXAQ75w09396nl79xaZct+aO9JFUjd5nXBsqVnM=; b=DyT0Kgn0/UEK2XgqVke63SOgM0eurG3IkhFXSBBDCOFNhMJaW44OKkJ6T2XR6XfN2Irqkj+QeQlxvf6RLxTEI1HFX3Lxyu/lxRi7xkZ9TSKqmBoN6yyzBXl5X3LBZBseuZd2FIvXqFxeefzzPgaAO5UWIt9Ix2B9RdS8Edb9f3utHuUGmrMrfIh8UPclA8SZS30bJ8+ER3+mSwmFn4wXUWbOGqKAsE3q2nvwJm5dLiehkyKftajYZd7u9dkTdyDrRQYL1JSts1xyXseBeMzDMv5mZFk8T3/Aanpr+JOP4ydkPWJLOXiNpKYahb8u2GcpSMDmDaIbHNn6cGsx+b7bFg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=linux.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=+42HLXAQ75w09396nl79xaZct+aO9JFUjd5nXBsqVnM=; b=VxxcVrzr636T83NeabeMAp9br7YYYvw1y1oTkKe9pAqAbRKX+CaCSAbonJrpoNE9BfswOhkqGjia73Y+QsMIa7fF0oujGwh2/QFEuL5SJ+HH7sMpmbUijT835SQyIcbhjVKWnifM+w7PtqHRtkKfCdE3FMGbC6Bt5kJb7T/5Vb4= Received: from DM6PR06CA0082.namprd06.prod.outlook.com (2603:10b6:5:336::15) by BL1PR12MB5176.namprd12.prod.outlook.com (2603:10b6:208:311::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5588.12; Wed, 7 Sep 2022 18:02:07 +0000 Received: from CY4PEPF0000B8EE.namprd05.prod.outlook.com (2603:10b6:5:336:cafe::2d) by DM6PR06CA0082.outlook.office365.com (2603:10b6:5:336::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5612.12 via Frontend Transport; Wed, 7 Sep 2022 18:02:07 +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 CY4PEPF0000B8EE.mail.protection.outlook.com (10.167.241.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5612.9 via Frontend Transport; Wed, 7 Sep 2022 18:02:06 +0000 Received: from [127.0.1.1] (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; Wed, 7 Sep 2022 13:01:30 -0500 Subject: [PATCH v4 13/13] Documentation/x86: Update resctrl_ui.rst for new features From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , Date: Wed, 7 Sep 2022 13:01:29 -0500 Message-ID: <166257368995.1043018.8665350782054895088.stgit@bmoger-ubuntu> In-Reply-To: <166257348081.1043018.11227924488792315932.stgit@bmoger-ubuntu> References: <166257348081.1043018.11227924488792315932.stgit@bmoger-ubuntu> User-Agent: StGit/1.1.dev103+g5369f4c MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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: CY4PEPF0000B8EE:EE_|BL1PR12MB5176:EE_ X-MS-Office365-Filtering-Correlation-Id: addbbdd5-cef2-4e17-ff3d-08da90fb13ca 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:(13230016)(7916004)(4636009)(136003)(346002)(39860400002)(396003)(376002)(36840700001)(46966006)(40470700004)(36860700001)(33716001)(70206006)(70586007)(26005)(4326008)(8676002)(103116003)(83380400001)(41300700001)(54906003)(110136005)(316002)(16576012)(82310400005)(478600001)(426003)(16526019)(2906002)(40480700001)(82740400003)(47076005)(40460700003)(9686003)(8936002)(186003)(336012)(15650500001)(81166007)(86362001)(7416002)(5660300002)(44832011)(356005)(71626007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2022 18:02:06.3202 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: addbbdd5-cef2-4e17-ff3d-08da90fb13ca 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: CY4PEPF0000B8EE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5176 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Update the documentation for the new features:=0A= 1. Slow Memory Bandwidth allocation (SMBA).=0A= With this feature, the QOS enforcement policies can be applied=0A= to the external slow memory connected to the host. QOS enforcement=0A= is accomplished by assigning a Class Of Service (COS) to a processor=0A= and specifying allocations or limits for that COS for each resource=0A= to be allocated.=0A= =0A= 2. Bandwidth Monitoring Event Configuration (BMEC).=0A= The bandwidth monitoring events mbm_total_bytes and mbm_local_bytes=0A= are set to count all the total and local reads/writes respectively.=0A= With the introduction of slow memory, the two counters are not=0A= enough to count all the different types are memory events. With the=0A= feature BMEC, the users have the option to configure mbm_total_bytes=0A= and mbm_local_bytes to count the specific type of events.=0A= =0A= Also add configuration instructions with examples.=0A= =0A= Signed-off-by: Babu Moger =0A= ---=0A= Documentation/x86/resctrl.rst | 148 +++++++++++++++++++++++++++++++++++++= +++-=0A= 1 file changed, 146 insertions(+), 2 deletions(-)=0A= =0A= diff --git a/Documentation/x86/resctrl.rst b/Documentation/x86/resctrl.rst= =0A= index 71a531061e4e..56581587c1a3 100644=0A= --- a/Documentation/x86/resctrl.rst=0A= +++ b/Documentation/x86/resctrl.rst=0A= @@ -17,14 +17,16 @@ AMD refers to this feature as AMD Platform Quality of S= ervice(AMD QoS).=0A= This feature is enabled by the CONFIG_X86_CPU_RESCTRL and the x86 /proc/cp= uinfo=0A= flag bits:=0A= =0A= -=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=0A= +=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=0A= RDT (Resource Director Technology) Allocation "rdt_a"=0A= CAT (Cache Allocation Technology) "cat_l3", "cat_l2"=0A= CDP (Code and Data Prioritization) "cdp_l3", "cdp_l2"=0A= CQM (Cache QoS Monitoring) "cqm_llc", "cqm_occup_llc"=0A= MBM (Memory Bandwidth Monitoring) "cqm_mbm_total", "cqm_mbm_local"=0A= MBA (Memory Bandwidth Allocation) "mba"=0A= -=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=0A= +SMBA (Slow Memory Bandwidth Allocation) "smba"=0A= +BMEC (Bandwidth Monitoring Event Configuration) "bmec"=0A= +=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=0A= =0A= To use the feature mount the file system::=0A= =0A= @@ -161,6 +163,23 @@ with the following files:=0A= "mon_features":=0A= Lists the monitoring events if=0A= monitoring is enabled for the resource.=0A= + Example output:=0A= +=0A= + # cat /sys/fs/resctrl/info/L3_MON/mon_features=0A= + llc_occupancy=0A= + mbm_total_bytes=0A= + mbm_local_bytes=0A= +=0A= + If the system supports Bandwidth Monitoring Event=0A= + Configuration (BMEC), then the bandwidth events will=0A= + be configurable. Then the output will be.=0A= +=0A= + # cat /sys/fs/resctrl/info/L3_MON/mon_features=0A= + llc_occupancy=0A= + mbm_total_bytes=0A= + mbm_total_config=0A= + mbm_local_bytes=0A= + mbm_local_config=0A= =0A= "max_threshold_occupancy":=0A= Read/write file provides the largest value (in=0A= @@ -264,6 +283,32 @@ When monitoring is enabled all MON groups will also co= ntain:=0A= the sum for all tasks in the CTRL_MON group and all tasks in=0A= MON groups. Please see example section for more details on usage.=0A= =0A= +"mbm_total_config", "mbm_local_config":=0A= + This contains the current event configuration for the events=0A= + mbm_total_bytes and mbm_local_bytes, respectively, when the=0A= + Bandwidth Monitoring Event Configuration (BMEC) feature is support= ed.=0A= + These files are organized by L3 domains under the subdirectories= =0A= + "mon_L3_00" and "mon_L3_01". When BMEC is supported, the events=0A= + mbm_local_bytes and mbm_total_bytes are configurable.=0A= +=0A= + Following are the types of events supported:=0A= +=0A= + =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=0A= + Bits Description=0A= + =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=0A= + 6 Dirty Victims from the QOS domain to all types of memory= =0A= + 5 Reads to slow memory in the non-local NUMA domain=0A= + 4 Reads to slow memory in the local NUMA domain=0A= + 3 Non-temporal writes to non-local NUMA domain=0A= + 2 Non-temporal writes to local NUMA domain=0A= + 1 Reads to memory in the non-local NUMA domain=0A= + 0 Reads to memory in the local NUMA domain=0A= + =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=0A= +=0A= + By default, the mbm_total_bytes configuration is set to 0x7F to co= unt=0A= + all the event types and the mbm_local_bytes configuration is set t= o=0A= + 0x15 to count all the local memory events.=0A= +=0A= Resource allocation rules=0A= -------------------------=0A= =0A= @@ -464,6 +509,19 @@ Memory bandwidth domain is L3 cache.=0A= =0A= MB:=3Dbw_MBps0;=3Dbw_MBps1;...=0A= =0A= +Slow Memory bandwidth Allocation (when supported)=0A= +-------------------------------------------------=0A= +Currently, CXL.memory is the only supported "slow" memory device.=0A= +With the support of SMBA feature the hardware enables bandwidth=0A= +allocation on the slow memory devices. If there are multiple slow=0A= +memory devices in the system, then the throttling logic groups all=0A= +the slow sources together and applies the limit on them as a whole.=0A= +=0A= +Slow Memory b/w domain is L3 cache.=0A= +::=0A= +=0A= + SMBA:=3Dbandwidth0;=3Dbandwidth1;...=0A= +=0A= Reading/writing the schemata file=0A= ---------------------------------=0A= Reading the schemata file will show the state of all resources=0A= @@ -479,6 +537,44 @@ which you wish to change. E.g.=0A= L3DATA:0=3Dfffff;1=3Dfffff;2=3D3c0;3=3Dfffff=0A= L3CODE:0=3Dfffff;1=3Dfffff;2=3Dfffff;3=3Dfffff=0A= =0A= +Reading/writing the schemata file (on AMD systems)=0A= +--------------------------------------------------=0A= +Reading the schemata file will show the state of all resources=0A= +on all domains. When writing the memory bandwidth allocation you=0A= +only need to specify those values in an absolute number expressed=0A= +in 1/8 GB/s increments. To allocate bandwidth limit of 2GB, you=0A= +need to specify the value 16 (16 * 1/8 =3D 2). E.g.=0A= +::=0A= +=0A= + # cat schemata=0A= + MB:0=3D2048;1=3D2048;2=3D2048;3=3D2048=0A= + L3:0=3Dffff;1=3Dffff;2=3Dffff;3=3Dffff=0A= +=0A= + # echo "MB:1=3D16" > schemata=0A= + # cat schemata=0A= + MB:0=3D2048;1=3D 16;2=3D2048;3=3D2048=0A= + L3:0=3Dffff;1=3Dffff;2=3Dffff;3=3Dffff=0A= +=0A= +Reading/writing the schemata file (on AMD systems) with slow memory=0A= +-------------------------------------------------------------------=0A= +Reading the schemata file will show the state of all resources=0A= +on all domains. When writing the memory bandwidth allocation you=0A= +only need to specify those values in an absolute number expressed=0A= +in 1/8 GB/s increments. To allocate bandwidth limit of 8GB, you=0A= +need to specify the value 64 (64 * 1/8 =3D 8). E.g.=0A= +::=0A= +=0A= + # cat schemata=0A= + SMBA:0=3D2048;1=3D2048;2=3D2048;3=3D2048=0A= + MB:0=3D2048;1=3D2048;2=3D2048;3=3D2048=0A= + L3:0=3Dffff;1=3Dffff;2=3Dffff;3=3Dffff=0A= +=0A= + # echo "SMBA:1=3D64" > schemata=0A= + # cat schemata=0A= + SMBA:0=3D2048;1=3D 64;2=3D2048;3=3D2048=0A= + MB:0=3D2048;1=3D2048;2=3D2048;3=3D2048=0A= + L3:0=3Dffff;1=3Dffff;2=3Dffff;3=3Dffff=0A= +=0A= Cache Pseudo-Locking=0A= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A= CAT enables a user to specify the amount of cache space that an=0A= @@ -1210,6 +1306,54 @@ View the llc occupancy snapshot::=0A= # cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/llc_occupancy=0A= 11234000=0A= =0A= +Example 5 (Configure and Monitor specific event types)=0A= +------------------------------------------------------=0A= +=0A= +A single socket system which has real time tasks running on cores 0-4=0A= +and non real time tasks on other CPUs. We want to monitor the memory=0A= +bandwidth allocation for specific events.=0A= +::=0A= +=0A= + # mount -t resctrl resctrl /sys/fs/resctrl=0A= + # cd /sys/fs/resctrl=0A= + # mkdir p1=0A= +=0A= +Move the CPUs 0-4 over to p1::=0A= +=0A= + # echo 0xf > p1/cpus=0A= +=0A= +View the current mbm_local_bytes::=0A= +=0A= + # cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_local_bytes=0A= + 112501=0A= +=0A= +Change the mbm_local_bytes to count mon-temporal writes to both local=0A= +and non-local NUMA domain. Refer to event supported bitmap under=0A= +mbm_local_config::=0A= +=0A= + # echo 0xc > /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_local_config=0A= +=0A= +View the updated mbm_local_bytes::=0A= +=0A= + # cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_local_bytes=0A= + 12601=0A= +=0A= +Similar experiment on mbm_total_bytes. First view the current mbm_total_by= tes::=0A= +=0A= + # cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_total_bytes=0A= + 1532501=0A= +=0A= +Change the mbm_total_bytes to count only reads to slow memory on both loca= l=0A= +and non-local NUMA domain. Refer to event supported bitmap under=0A= +mbm_total_config::=0A= +=0A= + # echo 0x30 > /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_total_config=0A= +=0A= +View the updated mbm_total_bytes::=0A= +=0A= + # cat /sys/fs/resctrl/p1/mon_data/mon_L3_00/mbm_total_bytes=0A= + 104562=0A= +=0A= Intel RDT Errata=0A= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=0A= =0A= =0A=