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Fri, 6 Oct 2023 11:51:07 +0000 From: Kamalesh Babulal To: Tejun Heo , Zefan Li , Johannes Weiner Cc: Tom Hromatka , cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] cgroup: use legacy_name for cgroup v1 disable info Date: Fri, 6 Oct 2023 17:20:32 +0530 Message-ID: <20231006115034.86615-1-kamalesh.babulal@oracle.com> X-Mailer: git-send-email 2.41.0 X-ClientProxiedBy: MA0PR01CA0020.INDPRD01.PROD.OUTLOOK.COM (2603:1096:a01:b8::8) To DM6PR10MB3001.namprd10.prod.outlook.com (2603:10b6:5:69::23) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6PR10MB3001:EE_|MW4PR10MB5884:EE_ X-MS-Office365-Filtering-Correlation-Id: 18c95bad-57b1-490e-7afa-08dbc6628651 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM6PR10MB3001.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(376002)(39860400002)(346002)(396003)(366004)(136003)(230922051799003)(1800799009)(186009)(451199024)(64100799003)(6506007)(6666004)(478600001)(6486002)(6512007)(2616005)(1076003)(2906002)(316002)(41300700001)(110136005)(66476007)(66556008)(66946007)(44832011)(5660300002)(8676002)(8936002)(4326008)(36756003)(38100700002)(86362001)(83380400001);DIR:OUT;SFP:1101; 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Fri, 06 Oct 2023 04:51:43 -0700 (PDT) X-Spam-Level: ** X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1779006812707075036 X-GMAIL-MSGID: 1779006812707075036 cgroup v1 or v2 or both controller names can be passed as arguments to the 'cgroup_no_v1' kernel parameter, though most of the controller's names are the same for both cgroup versions. This can be confusing when both versions are used interchangeably, i.e., passing cgroup_no_v1=io $ sudo dmesg |grep cgroup ... cgroup: Disabling io control group subsystem in v1 mounts cgroup: Disabled controller 'blkio' Make it consistent across the pr_info()'s, by using ss->legacy_name, as the subsystem name, while printing the cgroup v1 controller disabling information in cgroup_init(). Signed-off-by: Kamalesh Babulal --- v2 changes: - Dropped the subsys name comparison with ss->legacy_name only while parsing cgroup_no_v1 cmdline - Adapt the commit subject to match the partial change kernel/cgroup/cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) base-commit: b78b18fb8ee19f7a05f20c3abc865b3bfe182884 diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 1fb7f562289d..622fb53a806b 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -6121,7 +6121,7 @@ int __init cgroup_init(void) if (cgroup1_ssid_disabled(ssid)) pr_info("Disabling %s control group subsystem in v1 mounts\n", - ss->name); + ss->legacy_name); cgrp_dfl_root.subsys_mask |= 1 << ss->id;