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Scott Phillips" , Ilkka Koskinen , stable@vger.kernel.org Subject: Re: [PATCH v3] topology: make core_mask include at least cluster_siblings Message-ID: References: <20220308103012.GA31267@willie-the-truck> <7ac47c67-0b5e-5caa-20bb-a0100a0cb78f@arm.com> <35344252-5284-b08e-fec7-6dc99476b4b0@arm.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <35344252-5284-b08e-fec7-6dc99476b4b0@arm.com> X-ClientProxiedBy: CH2PR11CA0028.namprd11.prod.outlook.com (2603:10b6:610:54::38) To SA0PR01MB6329.prod.exchangelabs.com (2603:10b6:806:ee::12) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 143f1d32-07d8-44dd-764c-08da05db93c6 X-MS-TrafficTypeDiagnostic: BYAPR01MB3816:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: gSTKFrOvYMhSWCjWNWYzplUOp/5UacQGV9ZS7HxOUEk+tP7QR6tULEOWvTQuLvYjp5Z5MxpxBHqL1URdoZVjOEi2r1uHdDat8d3NOtK4T/skTek0VvOj8PSUH+8YprjlmDgHL9Bc9r7lD70JKjsf3cPv9LYC3hpuXCNS0pUWCYrIx8oHBHAgXKopavz8oC2qhid6MJrYArC7tvAyEP5/M4CD0kqOhkFrLcTTXiB8lmfUj4fteCa0JcKgeQpYSdzMnP7RsXBkCMT8T2Afi6Q9NEfWaxaLOq5lsciBmKJScl4LJ13Z57b6wd6ArgCKiZXjjs4MoVbtaCQflYcIOiwzIXIXB/cwNFSiVCOF4E7xxtpHKpwCDLFFytk/ZZnjXEjBhOHPx/jlZWUD0T7rrNTRXJg0N/smipaf0U+mS3FLF1zbjnwMBFOIEE63bxNx8EUontq3O3bKHGZz7Flwc8BJp7akcHqqMg11ZiSmoEMYMADRmSvjPPo9xYkT4CrHiJfkS8rRfeMzUbmfVTUTROYSO0MihqAJtwqFoUJU7sp5zp/87YCUDfCrAqi6H8FXL4tA+yeTMk0NrmfCeVj3P5z+Efnx75lmay7pls9gDiMFXxEC5sjRG1nUpT1tCUbRghh3bOFQ/qGh6WMEoEPOgSDFJMFEVVHGfBuC3GhSAVWPplGiY8HZWmkJqq/Caaz72b1JEetGlf6gLnSi89RdKt/Cxw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SA0PR01MB6329.prod.exchangelabs.com;PTR:;CAT:NONE;SFS:(13230001)(4636009)(7916004)(366004)(52116002)(53546011)(54906003)(83380400001)(6916009)(2906002)(316002)(6506007)(9686003)(6512007)(186003)(26005)(8676002)(38100700002)(66556008)(66946007)(86362001)(66476007)(5660300002)(38350700002)(8936002)(7416002)(4326008)(508600001)(33716001)(6486002);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?iHvRxz7hz6B3NxtHOvqX1yxVYzT4ialVtUnTfpsXZXNkLz+j6FfNnQ6T7O8O?= =?us-ascii?Q?3UB37Ui+j+ZFVzMUzRZdkv/9aS1W8TTjatmQ1uq1NDEmCN5lxrE7BpbCD+xi?= =?us-ascii?Q?9cLQapOOexa/icuBpUxJvm5fpqsQU6VVEH2BNu0AcZ4A/MNxumVm5QvIu3hE?= =?us-ascii?Q?8lL8fIMajqM0Hwsqf1YN2leQ7SPFNkZxylTKd6R5H4N4fSvc67m8iGHHQ3xx?= =?us-ascii?Q?XORx9Zvu+l2vYUrNVAlCLj12iMHUxH6Ev0JzTBTybG+O0TVCGlDTqXbAFss0?= =?us-ascii?Q?p663uu7G6RE3TwmBCQPYWERcjdRcjVGWU8kKwUnUn6Ja/Z8N6Wkedn23S48f?= =?us-ascii?Q?qcFPHnF4ce5N5Gb+TeVIm6bV4ej38SXTMdIbGG2hJpfO4GVt9J/ixGqLbFey?= =?us-ascii?Q?UNnh8kIDKgAn6Q3oUF6e2EyhYI4Fpz6W4wnPJ8F5m3gUb+biqQ37id7MdnAC?= =?us-ascii?Q?kZvs2+tjb2kGC/HT5jqYZP3bEq5dJOeAK4N3Ko7Nx1gPNoTwM/OesP4XklX9?= =?us-ascii?Q?UT2ITCbHCxm/MQv1Wp4CECYN9sr2DBLSPXY5Ln347Mb2/z1WVIhvJS99chIQ?= =?us-ascii?Q?RlP7JzPpNn2Kl1r2rtwkM+IY1XC/keOSSG02FoM/93CxaiJ8iYKLB94xGXbS?= =?us-ascii?Q?WmYEFtB+/WaFIkg9FcOlzZmIE9jr0YmjJQufqQPlaHH0rhD9N9HfV8xNaOVi?= =?us-ascii?Q?J8VKtcZlSD8SOKR7GFhkJ/k4YGbWhJ0ExiX76/uIgV8AYyYajqVQbn6eGMA5?= =?us-ascii?Q?fGLbPY4H4ElUlhheJviOSZQ6O0WCv1AItowDny2+GmUfMd1EWyItLG4HsXNL?= =?us-ascii?Q?B/32a96vW1cRBR4IIXNVgsFpTo1cQzrW8hV2WhkziZrXwb0647DCXFVvgHrQ?= =?us-ascii?Q?KKQSdwfpBjW+I4FJN+GbPpMjusYqhudrFmP5wwSq62aC10y39FWFcL7wYXXV?= =?us-ascii?Q?R3BndDWazL3J7GA6PyMPfhleVztz7cZFagKjCBZVdwbrsiBW9UGPqgB6fyIZ?= =?us-ascii?Q?MYuYPt5PQKiBlJ/YV7bKtxgSB1QOcVdiWedS5VtBhtAdm9mrqtVHS7N5y2Pn?= =?us-ascii?Q?QDpvtA4sMuCaQSjPBtaEHlpNpdnyh8ALXUwgWUScJt9cTc6T9hnOb0yzjpbK?= =?us-ascii?Q?a1hwR4AE+vLoKrASodjnzc4lxmURJykHifdIzRBA/drqFjeMo5dcJfx6Yrai?= =?us-ascii?Q?QN2uXE+z2NESGfZqm7bkwZUmu3nWVTkZHrNZD6bbxjv8UIiuE6/PTf6gZobI?= =?us-ascii?Q?YRdwOiL1XgZ9pN76wHJvv6cmURhnTVSRQHooOaVmWXvIysaFl1ZZ0LO96F2r?= =?us-ascii?Q?1zaOLJl4qKkxO2zGtY1sM1gaXvTUDbLTlM5xLKYSr9tP6PeKChiAuM47Xe3q?= =?us-ascii?Q?4sHq7N2MbYIrPWMGC2d+sNvTXP1vM2d+c59S5/sJkcn+vqB76hNiEhaI12PR?= =?us-ascii?Q?TfkKGWlppmqG7jo5Jl/RDwUgTdiiGNtPa/7WOydfRQvo86LKNWVynIi8pBc+?= =?us-ascii?Q?Wi1/4Fua+An9foo=3D?= X-OriginatorOrg: os.amperecomputing.com X-MS-Exchange-CrossTenant-Network-Message-Id: 143f1d32-07d8-44dd-764c-08da05db93c6 X-MS-Exchange-CrossTenant-AuthSource: SA0PR01MB6329.prod.exchangelabs.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Mar 2022 16:56:26.3467 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3bc2b170-fd94-476d-b0ce-4229bdc904a7 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: vTwAE4oEn8GJ3kDAqlwSp8AIbUXrM0xpQRNjPb5E40ZMNCSOPJHy4jzQIOLH+JdbskDAEkLAkXbFNvezNIet+VJBS8zJ+UE5VjZNQ7wIqeJ5OyAct9xD1emMXkebnXDl X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR01MB3816 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Mon, Mar 14, 2022 at 10:37:21AM +0100, Dietmar Eggemann wrote: > On 09/03/2022 19:26, Darren Hart wrote: > > On Wed, Mar 09, 2022 at 01:50:07PM +0100, Dietmar Eggemann wrote: > >> On 08/03/2022 18:49, Darren Hart wrote: > >>> On Tue, Mar 08, 2022 at 05:03:07PM +0100, Dietmar Eggemann wrote: > >>>> On 08/03/2022 12:04, Vincent Guittot wrote: > >>>>> On Tue, 8 Mar 2022 at 11:30, Will Deacon wrote: > >> > >> [...] > >> > >>>> IMHO, if core_mask weight is 1, MC will be removed/degenerated anyway. > >>>> > >>>> This is what I get on my Ampere Altra (I guess I don't have the ACPI > >>>> changes which would let to a CLS sched domain): > >>>> > >>>> # cat /sys/kernel/debug/sched/domains/cpu0/domain*/name > >>>> DIE > >>>> NUMA > >>>> root@oss-altra01:~# zcat /proc/config.gz | grep SCHED_CLUSTER > >>>> CONFIG_SCHED_CLUSTER=y > >>> > >>> I'd like to follow up on this. Would you share your dmidecode BIOS > >>> Information section? > >> > >> # dmidecode -t 0 > >> # dmidecode 3.2 > >> Getting SMBIOS data from sysfs. > >> SMBIOS 3.2.0 present. > >> > >> Handle 0x0000, DMI type 0, 26 bytes > >> BIOS Information > >> Vendor: Ampere(TM) > >> Version: 0.9.20200724 > >> Release Date: 2020/07/24 > >> ROM Size: 7680 kB > >> Characteristics: > >> PCI is supported > >> BIOS is upgradeable > >> Boot from CD is supported > >> Selectable boot is supported > >> ACPI is supported > >> UEFI is supported > >> BIOS Revision: 5.15 > >> Firmware Revision: 0.6 > >> > > > > Thank you, I'm following internally and will get with you. > > Looks like in my PPTT, the `Processor Hierarchy Nodes` which represents > cluster nodes have no valid `ACPI Processor ID`. Thanks, I'm looking for the right person to get us the latest information available this. Will follow up once I have. -- Darren Hart Ampere Computing / OS and Kernel