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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 DM6NAM11FT078.mail.protection.outlook.com (10.13.173.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5654.14 via Frontend Transport; Tue, 27 Sep 2022 20:26:35 +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; Tue, 27 Sep 2022 15:26:33 -0500 Subject: [PATCH v5 08/12] x86/resctrl: Add sysfs interface to read mbm_local_bytes event configuration From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , Date: Tue, 27 Sep 2022 15:26:27 -0500 Message-ID: <166431038771.373387.9706240777220251603.stgit@bmoger-ubuntu> In-Reply-To: <166431016617.373387.1968875281081252467.stgit@bmoger-ubuntu> References: <166431016617.373387.1968875281081252467.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: DM6NAM11FT078:EE_|DM4PR12MB6136:EE_ X-MS-Office365-Filtering-Correlation-Id: 93dcea6e-d4cc-454f-cfe1-08daa0c692d2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: n9cSk4lK2Jh6j6dUaYo4lf1jezjvsg1y7n2Ea6KkrArUO0aB4O2TF4C/sZhkg4Y39kBD0HXi6i6/0kgb9zHlmR/uRJ8Vt+sIPHlHptTktRxaFoE9O6ijPcx8awxgEnbXMOZK/oIgYQ9/WJtEquEoocGQp70TXBk0e/uED2jDA42UhK+NCZyowcreyGO0IfKccW0Z1PfaWN72mZfwWKN1glNA8CloZ7u0mzeIzymwqsMpDNeBkfl4QXYCwasu47laNesTbCJAMGyMu9hAahe9g+ZsB0/rKr4pM8ILQmPygBFDidZtyTnP+VY56VOCHEv3qBYchOvpJ2fif37g2+WTBHeUFgYaK2ijnb0NFD8ETmfZhkOqWDCrgVzjUDMGDxNUFLsFdW2azRrCQguKATcVyktmZZ1XPMKJTgfR+DUtqoWMmZqbgquJC/ys1ta5unQ0t7xnJgcm7/05kGZg/z8wlAE5EWlUzvwthN+ktDPSE7B9aYvnV3mSjqnY32O5nkpBZ//PSC9hb+23FINcRpXNwpPSE/biQ//Zun/xlarq1dWejDTiusad/aI2jXhb6JfAPTkofyc+XAVYy3Wtzn/KJnx3bkc3H35JHO92h/r7sPOUT0ce9VFCsy+PmJWEMoSJNAATtNjrhOavgL36lqXGaOHpB+N2tEOy6aoP36tgfJLa9u6UUH1zx4ZezkZo0bqt1IdcAOZd5r2i1TD9pJfo1DJkhwqLREbA4IwMGpAWDqA8atJaKROrpOvm836i1jr5ZoHrANLOyO9hCLXdv1T12mKuCC6QJcHbbkXfzaoOX5NZ3qfk3lhuQTSAeWOTMAdOjAPMEhflh4SAPHdx9cpayQ== 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:(13230022)(7916004)(4636009)(39860400002)(346002)(136003)(376002)(396003)(451199015)(36840700001)(40470700004)(46966006)(33716001)(82310400005)(5660300002)(41300700001)(2906002)(7416002)(44832011)(8936002)(426003)(110136005)(356005)(36860700001)(81166007)(70206006)(4326008)(70586007)(40480700001)(8676002)(478600001)(54906003)(16576012)(103116003)(316002)(47076005)(82740400003)(26005)(16526019)(186003)(336012)(9686003)(86362001)(40460700003)(6666004)(71626007)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Sep 2022 20:26:35.2667 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 93dcea6e-d4cc-454f-cfe1-08daa0c692d2 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: DM6NAM11FT078.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6136 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The current event configuration can be viewed by the user by reading=0A= the configuration file /sys/fs/resctrl/info/L3_MON/mbm_local_config.=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=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=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=3D=3D=3D=0A= =0A= By default, the mbm_local_bytes configuration is set to 0x15 to count=0A= all the local event types. The event configuration settings are domain=0A= specific. Changing the configuration on one CPU in a domain would=0A= affect the whole domain.=0A= =0A= For example:=0A= $cat /sys/fs/resctrl/info/L3_MON/mbm_local_config=0A= 0:0x15;1:0x15;2:0x15;3:0x15=0A= =0A= In this case the event mbm_local_bytes is currently configured with=0A= 0x15 on domains 0 to 3.=0A= =0A= Signed-off-by: Babu Moger =0A= ---=0A= arch/x86/kernel/cpu/resctrl/rdtgroup.c | 20 ++++++++++++++++++++=0A= 1 file changed, 20 insertions(+)=0A= =0A= diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c=0A= index b51fae77ba5c..27bf6ade0dbf 100644=0A= --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= @@ -1481,6 +1481,16 @@ static int mbm_total_config_show(struct kernfs_open_= file *of,=0A= return 0;=0A= }=0A= =0A= +static int mbm_local_config_show(struct kernfs_open_file *of,=0A= + struct seq_file *seq, void *v)=0A= +{=0A= + struct rdt_resource *r =3D of->kn->parent->priv;=0A= +=0A= + mbm_config_show(seq, r, QOS_L3_MBM_LOCAL_EVENT_ID);=0A= +=0A= + return 0;=0A= +}=0A= +=0A= /* rdtgroup information files for one cache resource. */=0A= static struct rftype res_common_files[] =3D {=0A= {=0A= @@ -1585,6 +1595,12 @@ static struct rftype res_common_files[] =3D {=0A= .kf_ops =3D &rdtgroup_kf_single_ops,=0A= .seq_show =3D mbm_total_config_show,=0A= },=0A= + {=0A= + .name =3D "mbm_local_config",=0A= + .mode =3D 0644,=0A= + .kf_ops =3D &rdtgroup_kf_single_ops,=0A= + .seq_show =3D mbm_local_config_show,=0A= + },=0A= {=0A= .name =3D "cpus",=0A= .mode =3D 0644,=0A= @@ -1698,6 +1714,10 @@ void __init mbm_config_rftype_init(void)=0A= rft =3D rdtgroup_get_rftype_by_name("mbm_total_config");=0A= if (rft)=0A= rft->fflags =3D RF_MON_INFO | RFTYPE_RES_CACHE;=0A= +=0A= + rft =3D rdtgroup_get_rftype_by_name("mbm_local_config");=0A= + if (rft)=0A= + rft->fflags =3D RF_MON_INFO | RFTYPE_RES_CACHE;=0A= }=0A= =0A= /**=0A= =0A=