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Tue, 17 Feb 2026 17:52:42 +0000 Message-ID: Date: Tue, 17 Feb 2026 09:52:39 -0800 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH 3/5] kselftests/resctrl: remove unnecessary exclude_idle To: Shaopeng Tan , , , , CC: , , References: <20260123044034.141247-1-tan.shaopeng@fujitsu.com> <20260123044034.141247-4-tan.shaopeng@fujitsu.com> Content-Language: en-US From: Reinette Chatre In-Reply-To: <20260123044034.141247-4-tan.shaopeng@fujitsu.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0307.namprd04.prod.outlook.com (2603:10b6:303:82::12) To SJ2PR11MB7573.namprd11.prod.outlook.com (2603:10b6:a03:4d2::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR11MB7573:EE_|IA1PR11MB8831:EE_ X-MS-Office365-Filtering-Correlation-Id: 6cb04a43-7240-4be8-3634-08de6e4d5946 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024; 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Just to confirm, does "not supported on Arm" imply that perf_event_open() fails when exclude_idle is 1? Thus encountering: EPERM Returned on many (but not all) architectures when an unsupported exclude_hv, exclude_idle, exclude_user, or exclude_kernel setting is specified. Reinette