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Shenoy" , Swapnil Sapkal , Shrikanth Hegde , Chen Yu , "Yury Norov" , Rasmus Villemoes Subject: [RESEND RFC PATCH v2 08/29] sched/fair: Use for_each_cpu_and_wrap() in select_idle_cpu() Date: Mon, 8 Dec 2025 09:26:54 +0000 Message-ID: <20251208092744.32737-8-kprateek.nayak@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251208083602.31898-1-kprateek.nayak@amd.com> References: <20251208083602.31898-1-kprateek.nayak@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1PEPF000042A9:EE_|PH0PR12MB5607:EE_ X-MS-Office365-Filtering-Correlation-Id: 3b33a056-65a5-487a-cd88-08de363c6126 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700013|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?8tUxlIL3Xr1g/5RgOyOoDQRJsCxwISKu27nTg04ahxooZ0DLZ+/p9yGXVGmH?= =?us-ascii?Q?eiSYoVK4fuuE93BPR8/7KwF/3O41uUGsT8+o1GQegLede6sABpwbyC390F5J?= =?us-ascii?Q?mgYXD/XBcOBNOA/0LDQ5dpwPaP3wHh7HGHmoAm2VUrOT1pFEi6eJu312DEpp?= =?us-ascii?Q?LHri12OMVpWD3RCEg+GYdz7dakKTg0VdSL/OuVIgdG/ewbFgVGxG+S88mgsV?= =?us-ascii?Q?mRR0lMqj2Nf3Qy4MbeQRewy7Jib1ikEo8FZikXJVYzCGvunVU3kAoSnJfl1t?= =?us-ascii?Q?oOG611CS/gFwCC8rnqD4MoUauaEVtirwYw4ZMJG4MYdikuimaGHe45GbdG8B?= =?us-ascii?Q?TrCv8gg44MhB8sIoZc0SujUlLnGaUBBwL6/HaqWQ71lQNM4V/dXrAi7PbZ8B?= =?us-ascii?Q?nWUcqfTgIMfxpFpvLAVVtRbAeKrfmhhuMOamST2ARUSaEzoSLkbtAgwK3xAS?= =?us-ascii?Q?f5UuKYDBrt+ud5Uo8ukdrI3/HtZkkbLGpQRXA+OxgLlPkhd68fXiEJbfi1FT?= =?us-ascii?Q?V5Za8wiY7YxK1guiwCWXaS6pvCyX79s8D0yqg3e+Rink3CF76w1CWPvcPIOL?= =?us-ascii?Q?YTos7getEpY/ZiEArqrnsd04FyCKrvnMAMkfappONrjEBV8BrEk+svsqsKrU?= =?us-ascii?Q?58+00Cx/BOaTRD53Wi6y9uW2/oW79vKwxrlUHiTLHWjc+2ML2oaq+eUt0Eqo?= =?us-ascii?Q?uZTptr4w450nXzVdFnY02sqQXl0B3XLSELZ/Zo1bOlemkJ7mFhovfbGmnR0Z?= =?us-ascii?Q?SR5+StbAFxqnx/kurhMuRNzAeLEmKZjIAiiWptBDPKumG3DA9oW2Q+e7NMHp?= =?us-ascii?Q?thwo6KLGsf8J9vjoc9GG37GncwgdrXO3NTojAGsb9GOmKO+817zAdY5ieyQO?= =?us-ascii?Q?KcuVDakttW+xT5a/fMuLv2yAfe3ISpIhlrBaUdD0fNeVSGWM7rZrM9NeBnxv?= =?us-ascii?Q?FNQWC25qDUAYoWGzDzOod6cDO94OYVZPICbyNPpk+PGpB+JZ5chuftdmBj4I?= =?us-ascii?Q?WqNgF0iFZygx4K/HSQiDb8sfDBQoPL48sxcKJPWkywVU+KKqnrd0Y9nDDaCY?= =?us-ascii?Q?s7hTxaLN+3NGXOZWyUciDTSRExoy3wuXqP5i/K9n03aM85rnPcobMPVSBXkR?= =?us-ascii?Q?jnY5R8ngS1JeMPl2Mzr5QGI+ik2P+OBgXHZ+TA2goVCS8A1r02CXcFiFNJWh?= =?us-ascii?Q?S/Lyi+Ulx6w597ryoW+POC9Ec/AAPlVO2vamUAWHnukrtDI+f1ulHd9CbDVz?= =?us-ascii?Q?EhUuSTHujQI4gaS32qmVoQCHcibyZFTBijQI6usBaTh5mr00fCOlU5StFq9X?= =?us-ascii?Q?pnEAsE+1v+W0I1phMVnyyOc4tZOBAqZZz0KV80Ec3001dygX9f9Ud+BzyX/D?= =?us-ascii?Q?TWH1+KVBVewEKcQte6L1H2dK5JJYGbZczonXhKm3mGDvQDKGOVjbJaMglEK7?= =?us-ascii?Q?Hz69RQRzkn5oNriIvbuOwTiRjrs7If2+mLGQ898pdNGWTF+XdAlt7LcNU3UV?= =?us-ascii?Q?MUDRGuDcEt6Ktx7ZsOwRDB2GON62uJjQPi44kzBelcnnMpYgNl6QIN/DLwJk?= =?us-ascii?Q?HbEhLpP197gfA5ANUQ8=3D?= X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(1800799024)(82310400026)(36860700013)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Dec 2025 09:30:08.7722 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3b33a056-65a5-487a-cd88-08de363c6126 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1PEPF000042A9.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB5607 Content-Type: text/plain; charset="utf-8" Avoid the "cpumask_test() + continue" pattern for cluster cpumask traversal in select_idle_cpu(). No functional changes intended. Cc: Yury Norov Cc: Rasmus Villemoes Signed-off-by: K Prateek Nayak --- kernel/sched/fair.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 5abe0ccecef3..8f5745495974 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7652,10 +7652,7 @@ static int select_idle_cpu(struct task_struct *p, st= ruct sched_domain *sd, bool struct sched_group *sg =3D sd->groups; =20 if (sg->flags & SD_CLUSTER) { - for_each_cpu_wrap(cpu, sched_group_span(sg), target + 1) { - if (!cpumask_test_cpu(cpu, cpus)) - continue; - + for_each_cpu_and_wrap(cpu, sched_group_span(sg), cpus, target + 1) { if (has_idle_core) { i =3D select_idle_core(p, cpu, cpus, &idle_cpu); if ((unsigned int)i < nr_cpumask_bits) --=20 2.43.0