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 <will@xxxxxxxxxx> 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
