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Wed, 3 Sep 2025 02:33:05 +0000 Message-ID: Date: Tue, 2 Sep 2025 19:33:02 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v17 18/33] fs/resctrl: Add the functionality to unassign MBM events To: Babu Moger , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , References: <4070eeb0525dc990fe56058714b107462c740b76.1755224735.git.babu.moger@amd.com> From: Reinette Chatre Content-Language: en-US In-Reply-To: <4070eeb0525dc990fe56058714b107462c740b76.1755224735.git.babu.moger@amd.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0117.namprd04.prod.outlook.com (2603:10b6:303:83::32) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB7573:EE_|SA3PR11MB8076:EE_ X-MS-Office365-Filtering-Correlation-Id: 9868b85e-3294-4157-2a2b-08ddea923675 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024|7053199007; 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If all the counters are in use, the kernel > logs the error message "Failed to allocate counter for in domain > " in /sys/fs/resctrl/info/last_cmd_status when a new assignment is > requested. > > To make space for a new assignment, users must unassign an already > assigned counter and retry the assignment again. > > Add the functionality to unassign and free the counters in the domain. > Also, add the helper rdtgroup_unassign_cntrs() to unassign counters in the > group. > > Signed-off-by: Babu Moger > --- Reviewed-by: Reinette Chatre Reinette