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Fri, 15 Sep 2023 17:42:48 -0500 From: Babu Moger To: , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v10 09/10] x86/resctrl: Add support for the files for MON groups only Date: Fri, 15 Sep 2023 17:42:26 -0500 Message-ID: <20230915224227.1336967-10-babu.moger@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230915224227.1336967-1-babu.moger@amd.com> References: <20230915224227.1336967-1-babu.moger@amd.com> MIME-Version: 1.0 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: CY4PEPF0000E9CF:EE_|PH7PR12MB5617:EE_ X-MS-Office365-Filtering-Correlation-Id: 3c676ae5-18bd-4606-50b5-08dbb63d174b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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:(13230031)(4636009)(396003)(136003)(376002)(346002)(39860400002)(451199024)(82310400011)(186009)(1800799009)(46966006)(40470700004)(36840700001)(81166007)(36756003)(86362001)(6666004)(54906003)(70206006)(40480700001)(110136005)(5660300002)(8936002)(44832011)(316002)(426003)(41300700001)(7696005)(70586007)(26005)(1076003)(8676002)(4326008)(336012)(83380400001)(2616005)(47076005)(82740400003)(356005)(16526019)(7406005)(478600001)(40460700003)(7416002)(36860700001)(2906002)(36900700001);DIR:OUT;SFP:1101; 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Fri, 15 Sep 2023 15:46:51 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1777295465543963099 X-GMAIL-MSGID: 1777295465543963099 There are 3 types resctrl root files. 1. RFTYPE_BASE : Files common for both MON and CTRL groups 2. RFTYPE_BASE | RFTYPE_CTRL : Files only for CTRL groups 3. RFTYPE_BASE | RFTYPE_MON : Files only for MON groups Files only for the MON groups are not supported now. Add the support to create these files. Signed-off-by: Babu Moger Reviewed-by: Fenghua Yu Reviewed-by: Ilpo Järvinen --- arch/x86/kernel/cpu/resctrl/rdtgroup.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index 953b082cec8a..55d1b90f460e 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -2533,6 +2533,7 @@ static void schemata_list_destroy(void) static int rdt_get_tree(struct fs_context *fc) { struct rdt_fs_context *ctx = rdt_fc2context(fc); + unsigned long flags = RFTYPE_CTRL_BASE; struct rdt_domain *dom; struct rdt_resource *r; int ret; @@ -2563,7 +2564,10 @@ static int rdt_get_tree(struct fs_context *fc) closid_init(); - ret = rdtgroup_add_files(rdtgroup_default.kn, RFTYPE_CTRL_BASE); + if (rdt_mon_capable) + flags |= RFTYPE_MON; + + ret = rdtgroup_add_files(rdtgroup_default.kn, flags); if (ret) goto out_schemata_free; @@ -3253,8 +3257,8 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn, enum rdt_group_type rtype, struct rdtgroup **r) { struct rdtgroup *prdtgrp, *rdtgrp; + unsigned long files = 0; struct kernfs_node *kn; - uint files = 0; int ret; prdtgrp = rdtgroup_kn_lock_live(parent_kn); @@ -3306,10 +3310,13 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn, goto out_destroy; } - if (rtype == RDTCTRL_GROUP) + if (rtype == RDTCTRL_GROUP) { files = RFTYPE_BASE | RFTYPE_CTRL; - else + if (rdt_mon_capable) + files |= RFTYPE_MON; + } else { files = RFTYPE_BASE | RFTYPE_MON; + } ret = rdtgroup_add_files(kn, files); if (ret) {