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Mon, 10 Oct 2022 15:29:12 -0500 Subject: [PATCH v6 04/12] x86/resctrl: Include new features in command line options From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , Date: Mon, 10 Oct 2022 15:28:59 -0500 Message-ID: <166543373926.23830.6551235898170426788.stgit@bmoger-ubuntu> In-Reply-To: <166543345606.23830.3120625408601531368.stgit@bmoger-ubuntu> References: <166543345606.23830.3120625408601531368.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: DM6NAM11FT020:EE_|CY8PR12MB7609:EE_ X-MS-Office365-Filtering-Correlation-Id: 1f30bd3b-9fda-46c8-86ac-08daaafe1951 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: 10 Oct 2022 20:29:14.8753 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 1f30bd3b-9fda-46c8-86ac-08daaafe1951 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: DM6NAM11FT020.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7609 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 disable the new 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 2bc11a61c4d0..d616366e964a 100644=0A= --- a/Documentation/admin-guide/kernel-parameters.txt=0A= +++ b/Documentation/admin-guide/kernel-parameters.txt=0A= @@ -5173,7 +5173,7 @@=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 efffce716f3a..c7561c613209 100644=0A= --- a/arch/x86/kernel/cpu/resctrl/core.c=0A= +++ b/arch/x86/kernel/cpu/resctrl/core.c=0A= @@ -665,6 +665,8 @@ 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= @@ -688,6 +690,8 @@ 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=