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Fri, 23 May 2025 07:48:59 +0000 Message-ID: <223a8f82-52cd-490a-a507-d693edf77d0b@intel.com> Date: Fri, 23 May 2025 15:48:45 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [merged mm-stable] sched-numa-fix-task-swap-by-skipping-kernel-threads.patch removed from -mm tree To: Andrew Morton , Libo Chen CC: K Prateek Nayak , Peter Zijlstra , , , , , , , , , , , , , , , , References: <20250521165653.4CFACC4CEE4@smtp.kernel.org> <20250521191114.GE24938@noisy.programming.kicks-ass.net> <20250521135854.3ba2d1f61bd2c6a4af36ac13@linux-foundation.org> <021d2962-2fba-4c27-ae9f-4ded2df44903@amd.com> <27831b60-53f1-4348-b33e-1f30900e29a6@oracle.com> <20250522145659.91bb0bc4c8affc8e62306e0d@linux-foundation.org> Content-Language: en-US From: "Chen, Yu C" In-Reply-To: <20250522145659.91bb0bc4c8affc8e62306e0d@linux-foundation.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: KL1PR01CA0157.apcprd01.prod.exchangelabs.com (2603:1096:820:149::18) To DM4PR11MB6020.namprd11.prod.outlook.com (2603:10b6:8:61::19) Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR11MB6020:EE_|CY5PR11MB6209:EE_ X-MS-Office365-Filtering-Correlation-Id: 2f8630f6-f4a5-41bd-b083-08dd99ce4731 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|7416014|366016; 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>>>>       cur = rcu_dereference(dst_rq->curr); >>>>       if (cur && ((cur->flags & PF_EXITING) || is_idle_task(cur) || >>> >>> Question: Shouldn't ... >>> >>>     if (cur->flags & (PF_EXITING | PF_KTHREAD)) >>>         curr = NULL >>> >>> ... be enough? >> >> >> Good point, idle thread is always a kernel thread. I think we can >> remove is_idle_task() in that case > > I'll drop the v4 series from mm.git. Let's have a v5, please. I'll send the v5, thanks. thanks, Chenyu