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Thu, 20 Nov 2025 19:16:44 -0800 Message-ID: <0f9ed7ce-3839-4d2b-98b3-25cc4045aa22@amd.com> Date: Fri, 21 Nov 2025 08:46:39 +0530 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 09/17] sched/core: Add support for nohz_full CPUs To: Shrikanth Hegde , , CC: , , , , , , , , , , , , , , , , References: <20251119124449.1149616-1-sshegde@linux.ibm.com> <20251119124449.1149616-10-sshegde@linux.ibm.com> Content-Language: en-US From: K Prateek Nayak In-Reply-To: <20251119124449.1149616-10-sshegde@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD78:EE_|LV2PR12MB5942:EE_ X-MS-Office365-Filtering-Correlation-Id: 11f96804-fa11-4c63-eb78-08de28ac695f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|36860700013|82310400026|1800799024; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Nov 2025 03:16:50.0021 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 11f96804-fa11-4c63-eb78-08de28ac695f 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD78.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV2PR12MB5942 Hello Shrikanth, On 11/19/2025 6:14 PM, Shrikanth Hegde wrote: > Enable tick on nohz full CPU when it is marked as paravirt. > If there in no CFS/RT running there, disable the tick to save the power. Wouldn't the task be pinned if it is running on a nohz CPU? We don't push out pinned tasks so this seems unnecessary. Am I missing something? -- Thanks and Regards, Prateek