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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 DM6NAM11FT033.mail.protection.outlook.com (10.13.172.221) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5791.20 via Frontend Transport; Fri, 4 Nov 2022 20:00:24 +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 15.1.2375.31; Fri, 4 Nov 2022 15:00:22 -0500 Subject: [PATCH v8 04/13] x86/resctrl: Include new features in command line options From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , Date: Fri, 4 Nov 2022 15:00:22 -0500 Message-ID: <166759202231.3281208.4695877999050945787.stgit@bmoger-ubuntu> In-Reply-To: <166759188265.3281208.11769277079826754455.stgit@bmoger-ubuntu> References: <166759188265.3281208.11769277079826754455.stgit@bmoger-ubuntu> User-Agent: StGit/1.1.dev103+g5369f4c MIME-Version: 1.0 Content-Type: text/plain; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2022 20:00:24.6950 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d2c68264-7e31-49d0-556b-08dabe9f365e 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: DM6NAM11FT033.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5050 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the command line options to disable the new features. smba : Slow Memory Bandwidth Allocation bmec : Bandwidth Monitor Event Configuration. Signed-off-by: Babu Moger --- Documentation/admin-guide/kernel-parameters.txt | 2 +- arch/x86/kernel/cpu/resctrl/core.c | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentatio= n/admin-guide/kernel-parameters.txt index a465d5242774..f3f0870144fb 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5190,7 +5190,7 @@ rdt=3D [HW,X86,RDT] Turn on/off individual RDT features. List is: cmt, mbmtotal, mbmlocal, l3cat, l3cdp, l2cat, l2cdp, - mba. + mba, smba, bmec. E.g. to turn on cmt and turn off mba use: rdt=3Dcmt,!mba =20 diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resct= rl/core.c index 4b970e7192e8..e31c98e2fafc 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -659,6 +659,8 @@ enum { RDT_FLAG_L2_CAT, RDT_FLAG_L2_CDP, RDT_FLAG_MBA, + RDT_FLAG_SMBA, + RDT_FLAG_BMEC, }; =20 #define RDT_OPT(idx, n, f) \ @@ -682,6 +684,8 @@ static struct rdt_options rdt_options[] __initdata =3D= { RDT_OPT(RDT_FLAG_L2_CAT, "l2cat", X86_FEATURE_CAT_L2), RDT_OPT(RDT_FLAG_L2_CDP, "l2cdp", X86_FEATURE_CDP_L2), 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), }; #define NUM_RDT_OPTIONS ARRAY_SIZE(rdt_options) =20