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Thu, 1 Dec 2022 09:36:27 -0600 Subject: [PATCH v9 04/13] x86/resctrl: Include new features in command line options From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Date: Thu, 1 Dec 2022 09:36:26 -0600 Message-ID: <166990898682.17806.2447018872734886554.stgit@bmoger-ubuntu> In-Reply-To: <166990882621.17806.16780480657453071426.stgit@bmoger-ubuntu> References: <166990882621.17806.16780480657453071426.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: CO1NAM11FT024:EE_|PH8PR12MB7231:EE_ X-MS-Office365-Filtering-Correlation-Id: bafb2e31-e618-4eac-069a-08dad3b1d13e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 01 Dec 2022 15:36:29.7959 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bafb2e31-e618-4eac-069a-08dad3b1d13e 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: CO1NAM11FT024.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB7231 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the command line options to enable or disable the new resctrl features.= =0A= smba : Slow Memory Bandwidth Allocation=0A= bmec : Bandwidth Monitor Event Configuration.=0A= =0A= Signed-off-by: Babu Moger =0A= ---=0A= Documentation/admin-guide/kernel-parameters.txt | 2 +-=0A= arch/x86/kernel/cpu/resctrl/core.c | 4 ++++=0A= 2 files changed, 5 insertions(+), 1 deletion(-)=0A= =0A= diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentatio= n/admin-guide/kernel-parameters.txt=0A= index 42af9ca0127e..a7b6634f4426 100644=0A= --- a/Documentation/admin-guide/kernel-parameters.txt=0A= +++ b/Documentation/admin-guide/kernel-parameters.txt=0A= @@ -5190,7 +5190,7 @@=0A= rdt=3D [HW,X86,RDT]=0A= Turn on/off individual RDT features. List is:=0A= cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp,=0A= - mba.=0A= + mba, smba, bmec.=0A= E.g. to turn on cmt and turn off mba use:=0A= rdt=3Dcmt,!mba=0A= =0A= diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c=0A= index f6af3ac1ef20..10a8c9d96f32 100644=0A= --- a/arch/x86/kernel/cpu/resctrl/core.c=0A= +++ b/arch/x86/kernel/cpu/resctrl/core.c=0A= @@ -659,6 +659,8 @@ enum {=0A= RDT_FLAG_L2_CAT,=0A= RDT_FLAG_L2_CDP,=0A= RDT_FLAG_MBA,=0A= + RDT_FLAG_SMBA,=0A= + RDT_FLAG_BMEC,=0A= };=0A= =0A= #define RDT_OPT(idx, n, f) \=0A= @@ -682,6 +684,8 @@ static struct rdt_options rdt_options[] __initdata =3D= {=0A= RDT_OPT(RDT_FLAG_L2_CAT, "l2cat", X86_FEATURE_CAT_L2),=0A= RDT_OPT(RDT_FLAG_L2_CDP, "l2cdp", X86_FEATURE_CDP_L2),=0A= RDT_OPT(RDT_FLAG_MBA, "mba", X86_FEATURE_MBA),=0A= + RDT_OPT(RDT_FLAG_SMBA, "smba", X86_FEATURE_SMBA),=0A= + RDT_OPT(RDT_FLAG_BMEC, "bmec", X86_FEATURE_BMEC),=0A= };=0A= #define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options)=0A= =0A= =0A=