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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 CO1PEPF00001A60.mail.protection.outlook.com (10.167.241.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6064.21 via Frontend Transport; Thu, 2 Feb 2023 21:47:39 +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 15.1.2375.34; Thu, 2 Feb 2023 15:47:38 -0600 Subject: [RFC v2 PATCH 7/7] x86/resctrl: Add debug files when mounted with debug option From: Babu Moger To: , CC: , , , , , , , , , , , Date: Thu, 2 Feb 2023 15:47:37 -0600 Message-ID: <167537445777.647488.12333202522131465679.stgit@bmoger-ubuntu> In-Reply-To: <167537433143.647488.9641864719195184123.stgit@bmoger-ubuntu> References: <167537433143.647488.9641864719195184123.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: 02 Feb 2023 21:47:39.9960 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ddb0c058-55f1-4fde-c252-08db05671b54 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: CO1PEPF00001A60.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6891 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org Add the debug files to the resctrl hierarchy.=0A= =0A= Signed-off-by: Babu Moger =0A= ---=0A= arch/x86/kernel/cpu/resctrl/rdtgroup.c | 27 +++++++++++++++++++++++++++= =0A= 1 file changed, 27 insertions(+)=0A= =0A= diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/r= esctrl/rdtgroup.c=0A= index c35d91b04de6..b7c72b011264 100644=0A= --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c=0A= @@ -2398,6 +2398,31 @@ static int mkdir_mondata_all(struct kernfs_node *par= ent_kn,=0A= struct rdtgroup *prgrp,=0A= struct kernfs_node **mon_data_kn);=0A= =0A= +void resctrl_add_debug_file(struct kernfs_node *parent_kn,=0A= + const char *config, unsigned long fflags,=0A= + bool debug)=0A= +{=0A= + struct rftype *rft;=0A= +=0A= + rft =3D rdtgroup_get_rftype_by_name(config);=0A= + if (debug && rft) {=0A= + rft->fflags |=3D fflags;=0A= + rdtgroup_add_file(parent_kn, rft);=0A= + } else if (rft) {=0A= + rft->fflags &=3D ~fflags;=0A= + kernfs_remove_by_name(parent_kn, config);=0A= + }=0A= +}=0A= +=0A= +static void resctrl_add_debug_files(bool debug)=0A= +{=0A= + resctrl_add_debug_file(rdtgroup_default.kn, "rmid",=0A= + RFTYPE_BASE, debug);=0A= + resctrl_add_debug_file(rdtgroup_default.kn, "closid",=0A= + RFTYPE_BASE_CTRL, debug);=0A= + kernfs_activate(rdtgroup_default.kn);=0A= +}=0A= +=0A= static int rdt_enable_ctx(struct rdt_fs_context *ctx)=0A= {=0A= int ret =3D 0;=0A= @@ -2411,6 +2436,8 @@ static int rdt_enable_ctx(struct rdt_fs_context *ctx)= =0A= if (!ret && ctx->enable_mba_mbps)=0A= ret =3D set_mba_sc(true);=0A= =0A= + resctrl_add_debug_files(ctx->debug);=0A= +=0A= return ret;=0A= }=0A= =0A= =0A=