From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CY3PR05CU001.outbound.protection.outlook.com (mail-westcentralusazon11013034.outbound.protection.outlook.com [40.93.201.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CF43A7260D for ; Fri, 13 Feb 2026 14:29:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.201.34 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770992994; cv=fail; b=OyCor8lai6RW4Nb1/6N+w05jxNsDuG6ueWAg2153NwIuJboME66OF8qog3ziQxZWQ0t0nVijrsX9fjTeeyqsg8FmF93gGUghAxLeot2hAVPe3h7LNInveGBBIFLeK8uBciwfgjDk7tcjkmN9V87Mn7CqBIunJHx0opnB/H/CO2I= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770992994; c=relaxed/simple; bh=5vNtwghje9zx+rmWeQpzn6gJjtL8foi3tLStTkpVIiU=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=WQuJsJIoJyWryvXlLRzKoVGD9RSjbjGrDJMsmCBABS/SLxYRXu4QXX8cCoQLnsyak07hv0AntcpvA/9kFqyJF8ZcJ/7YEqpQY2dYtL/NqmG62R1dzaXYZy29vInrW9mimGQVrqGtmVivVa/jSJfALEvU9IVKYSahvd2V+LckKAk= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=30bz+/kT; arc=fail smtp.client-ip=40.93.201.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="30bz+/kT" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=URe/XyZ4/UnXwLKEbtbH9rqyFFnzmCsIBLQTAogZTAFnFouW99Dpomz9qTzzB9QpLNuK+MlWGri9mfWEbsC3DvxxOla3IcR2Odsl3EiICOZXEri/LRkNwXW0cuVSJmtzTWphJqAWDBTibHRKlV5qwIXn8C1evVRccqUH4zaYAEOOndXOZfiYWsfAve6hPfMCIhzazgbDNwGq0RdRuaVVyK1mqsQ43URBGRoYUQFEkC2eYK984Eq//gNTQfLV8ZdV2a34o+ZWEZPUfxS+KcVibyCEhUJ7qTJyl3odIZpU1nJuG7mYRh3Qm1HTs0/ZDtgVq7Nz1S6k+0WiOPxNkIO/Hg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=umXKnELscUj2M+GowAi6ZZG9poLnHr0rmVKVzAC3OVE=; b=ggIlkxU5Chpa/AWPR54WktLzI4/+QQN7Tn8l1ucDHM/VXTNvcho92bo3+ZxYzbnOYzf1CkFZTGRe/bMbS7GRzqEw+bV+qncuCyKS4cv5XAIzQyiOYIRVqc+7x5755vvDa5RK6NvIdFNdLykysMW3SBa9ABX7V6v/BXeS9QCofBmnF/xBmm7z7dYudYZXG1LONJwJAl9QOCsUpugxUOdpL52cq8bBw4omirYMNlYNdPOlCaCU3m5vVVWJaLc47FPNBT5jCr9+4OdPsnKO+KeWEswi1oxee9h668FFyUQK1YkjBrzmjvBjCKgGgnES2oBuQ7ilAlxUcVSam78bndxwFA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=infradead.org smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=umXKnELscUj2M+GowAi6ZZG9poLnHr0rmVKVzAC3OVE=; b=30bz+/kTxVEt6TKZCzlYiYehrujSdAd7buMrozVfPophm0H7eSCkfe4vKa6VDeFmvTsB85E42f6VuX+smcEfFXqBaei1el205oncvVKe1UFIPR8q5ZSV+T6hDZ3KREY4H/llOPr+gdgHW2cJ6/UlK2LaBoCYY+o9J3djHGvLjhQ= Received: from CH5P223CA0017.NAMP223.PROD.OUTLOOK.COM (2603:10b6:610:1f3::13) by CY3PR12MB9632.namprd12.prod.outlook.com (2603:10b6:930:100::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9611.12; Fri, 13 Feb 2026 14:29:48 +0000 Received: from CH2PEPF00000142.namprd02.prod.outlook.com (2603:10b6:610:1f3:cafe::b8) by CH5P223CA0017.outlook.office365.com (2603:10b6:610:1f3::13) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9611.13 via Frontend Transport; Fri, 13 Feb 2026 14:29:44 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by CH2PEPF00000142.mail.protection.outlook.com (10.167.244.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9611.8 via Frontend Transport; Fri, 13 Feb 2026 14:29:48 +0000 Received: from SATLEXMB04.amd.com (10.181.40.145) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.2.2562.17; Fri, 13 Feb 2026 08:29:48 -0600 Received: from satlexmb07.amd.com (10.181.42.216) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Fri, 13 Feb 2026 08:29:48 -0600 Received: from [172.31.184.125] (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Fri, 13 Feb 2026 08:29:44 -0600 Message-ID: <00732f69-0bb4-460e-8561-8e8e3a099be7@amd.com> Date: Fri, 13 Feb 2026 19:59:43 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/4] sched: Various reweight_entity() fixes To: Peter Zijlstra CC: Vincent Guittot , Doug Smythies , , , , , , , , , , , References: <20260211104833.GH1395416@noisy.programming.kicks-ass.net> <20260211162825.GZ1282955@noisy.programming.kicks-ass.net> <58c6c115-f544-4c51-990c-a3ad2fbf701a@amd.com> <20260212115943.GB1282955@noisy.programming.kicks-ass.net> <20260212171611.GL1395416@noisy.programming.kicks-ass.net> <20260212193140.GR1395266@noisy.programming.kicks-ass.net> <27217771-325a-4545-8a12-80dc6ff5112f@amd.com> <20260213064423.GB3088714@noisy.programming.kicks-ass.net> <20260213105020.GB3031506@noisy.programming.kicks-ass.net> Content-Language: en-US From: K Prateek Nayak In-Reply-To: <20260213105020.GB3031506@noisy.programming.kicks-ass.net> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Received-SPF: None (SATLEXMB04.amd.com: kprateek.nayak@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000142:EE_|CY3PR12MB9632:EE_ X-MS-Office365-Filtering-Correlation-Id: 3a6991c5-0b23-4c62-7299-08de6b0c57a2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|7416014|376014|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: =?utf-8?B?NVU4VkRvbjY5eThkZWZEd0JwM1RwQUtmVTVIVnB4a0E4U0s4YW5qQzc1akNu?= =?utf-8?B?UjYxdEFZSFlhTldXclJuVHpSTTZ6MnhJTGhXTkcrZUcvVVFMRWhpdnBqZGZQ?= =?utf-8?B?ck14bU13dHI4Z2tPOGxwUkduVWdvV1NKcnozaHRnOUhYSVlUSnp5TitKaUVJ?= =?utf-8?B?UWdZM0FHMUcyOC80RytJMTZUT1ppVE1LZ0MzNVZ6VVFZTnFlVHRudzZjN3E3?= =?utf-8?B?SEZvUlFDeFZmMkZrRVB0UHJsMmhWZXZPVkFPQ1VHQ3luMWU5bGRsenhFbEM2?= =?utf-8?B?SUU5ZmgzSTUvNkdENVVOWkhGbHFFS21HcW1sckNwS1ZSMmV6R3BLKzIyTEdh?= =?utf-8?B?aE03bmR0TGFvbVRpeXVqU3NrK2dWeWJ5R0hpNmhJQytEN3F3LzhCbXp5TWpw?= =?utf-8?B?U2VDYnVIemZTZkhGdkY1TzkrOW5DRXc2b09ZNmJHRFdGWkNEVXZxZU1DMTdS?= =?utf-8?B?ZVVXU2g2YXdYRmd3WFNuVnd0RnM1cTRUMjVod2FUWkdzWlUxWExEK0hzRW5J?= =?utf-8?B?M2VsWnNVTDdYOE90TkljTzBhRnpZdE4wVytyeC90a3oycm1vYXAvem95U2dl?= =?utf-8?B?TndPNGp4R2FJN09Mc2JURFRnQ1BrSGJnOGF1THZxMk9qenBMRG42VXNXYWNq?= =?utf-8?B?MlAzM0MrTklROG1jZU9laW9EcW8zTUp3bUJGZForbm45SlRrYzZNTWFNRGZJ?= =?utf-8?B?TE8wTkpHUGI1ZFpJU2pRZjFYd2FkVUx6aVRUR1JWUVhkU2Z2Q3NCaGNxbWRu?= =?utf-8?B?a1kvYzMxazZpNmR2WVg4RHgyNWk0RHRBNUMwZnlTUXZ5dWJ0WC94QjBTTkJV?= =?utf-8?B?ZkF5SDFxQmtFM05tZWN6Z2pXRmUzaGluakU4M3hJdTJ0bkhUZG9XTFVLaDFG?= =?utf-8?B?MDJVZW5Fc28wbnpXUjdGUG91YjdHWW9QNnI2WFd3WGN3THNGZjZxMGYvaHhy?= =?utf-8?B?dHdvVW9nNzBlTHI2NjVadnQyVzBpbTJWQTdHY3JsWXh0MlY4VXpyRlZwQTJv?= =?utf-8?B?TXpwN2paRWFma3hKM1ptdnFFUUZwSndPaSs4WGZyZnhqcnZibmpuU3huUmNW?= =?utf-8?B?c3ZtZmtiOGFmNkM3RS9SaHdoM2Y2L2JiSEhRelp4Y0R4V25oU00xeXY5UVhP?= =?utf-8?B?VDk3WWdscW1OSll6d3RMdkNVUEVNNjdWWFQ5RXNvc0dETXB6TkdEUHY2dzd3?= =?utf-8?B?V21CWWYrUFZoZTNKck1hT3ZXbTFnbzAwZ3VuUHZsSEhHazNxWFMrSm5aa2VT?= =?utf-8?B?QTVla0ZVTWtEeGpnZ1JINmFvdFo0dzc1dGN4WHphTGozazdsZjl1YTd2M2ht?= =?utf-8?B?NXF6YW1KWFlKODQzNjRzMnA3V0tHS3dZVmtCR2VXVVYzSkpGYlpvV0RkZ05M?= =?utf-8?B?RGU0dWgwbkZtajJEdkwyaTNXRHE4TkZzckk1SzhhYW9CMksvVlh0ZTBYWnVZ?= =?utf-8?B?SHByRlU3Y0NvM0V5eEV6NjYxa08vanNEZFliNW02ejFPSFNyRXNWM1lmWS82?= =?utf-8?B?elpQdCtRS1dmYmIzQmJKWkNRd0dJaUhRTFhUTEVqNDcrd1RseXhIcW15RVp5?= =?utf-8?B?S05PR2VaaWlIRlQ1UlA3Z1VvQVVDQ0dLWlZ1blVpaE1QSWJPeGFrTGZYN0Qr?= =?utf-8?B?cUd4UU5aZklNbGk5K2tUQW52dW1hV2o3M1dPM1JrZC81Z2NQcHpuQ2VXM2tV?= =?utf-8?B?QS9qYXVOZDdHT2lWNWlYQW1PczJYak42OEdQWi81NUNjQnVrcm9WT1BjMmVH?= =?utf-8?B?L3F3dEM4WGlTQ0FLN0NLaTdlcXk3OXB3ZE5TWTFNRzhGM2VCalVHODAwWlhL?= =?utf-8?B?UUtQMmtic3ZiOE1oRHBDcGlQUDF2RHpUSUJGTHBEZ0dUNGNKbzJNWXJiT2Yr?= =?utf-8?B?akIyZjRaY0d2Q1E2Q1RFWnV2L1BKU1poUVpmZ3g2c0JUOEpaak5KVzB2enJm?= =?utf-8?B?ZTc4VzhNeVJrRFlmZmIzUnBiRDMweG5Ha2FhQUVtdnczemZ4VjVjRG1wenNU?= =?utf-8?B?eGMzZXlpZ3c2VEhiWldUWm1OZElvdy9CemJZbXQ2RkM1TEhwOFlnTGQyM0RH?= =?utf-8?B?VkFIaG42ZFhlbWt2UUJ3dmVjUkhGRkgwaUtFV3lGS3lxS3VUSzJZdEh2aGZj?= =?utf-8?B?ZHo5Uy9xNTRjcVRmcWJFWTZXMkk2REV0OC95QzczU05sNUFhaG5VblVzSHBw?= =?utf-8?B?SXRmTWtwUE8rQkZudjNXUnRzMGdueUJ3b1dMR2xRd0lXSWg1b2xFejBJMjdK?= =?utf-8?B?VWw4ZkV5QU52enlpRlZaWXBzblJnPT0=?= 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)(82310400026)(7416014)(376014)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: hP0A9RCMk5KlSQka8swgbT4RUjc8f5k0dVjFlSZzV3L71y9Ls9obr0vGRE6UE5RdiiCj9aEmnkpDvAP3Z91nhqvi0OkfQ5c5Hkm7g1X2VVRBxvfgIKq+LqoYUcWfBmIzQe/ZfHfLWk5TcjvCOyOUrj6e9dMWVgVgltM0yfbumNHmcA4RMGPclRvQLpVAV+ZE4SgVnNAaXd92JJJzxn2xajtNzAX8hBq63tVkX9FAFPLlhojt1uwbwXZKu6DH2OMq76f+ItQbOJfJvXdnsf77/6wh1ar61ixfC2Js6Rn1Kq5zYm/uHiw98ecqwFKW3+YSCX9PlsKTF5V2K8IRLOrDF2Dzl8M3kr2WRtLRDwx+xrphasuK6xNdXJZMuhh2i8N3UMjVm4cvzvNz5+RWL3lTUWAZp/zE53wC4xxeAaqD3/2DEXzDmXMy39SKD8jrqksI X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2026 14:29:48.6687 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3a6991c5-0b23-4c62-7299-08de6b0c57a2 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: CH2PEPF00000142.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY3PR12MB9632 On 2/13/2026 4:20 PM, Peter Zijlstra wrote: > On Fri, Feb 13, 2026 at 07:44:24AM +0100, Peter Zijlstra wrote: >> As to wrapper, I just went through math64.h and it appears we have >> div64_long() that might just DTRT, but I really need to go wake up >> first. >> >> And as you noted, the current branch doesn't boot :/ No idea what I >> messed up last night, but I did push without test building. I only >> folded those two division fixed and figured what could possibly go wrong >> :-) > > It's now got div64_long() throughout. > > I've build and booted each commit in a vm; build and booted the combined > stack on 2 different physical machines and re-ran the various > benchmarks. > > Works-for-me. Booted fine on this side as well. Will take it for a spin with the usual set of tests and report back with the results. -- Thanks and Regards, Prateek