* Michael Ellerman <m...@ellerman.id.au> [2020-07-20 23:56:19]: > Srikar Dronamraju <sri...@linux.vnet.ibm.com> writes: > > > Add support for grouping cores based on the device-tree classification. > > - The last domain in the associativity domains always refers to the > > core. > > - If primary reference domain happens to be the penultimate domain in > > the associativity domains device-tree property, then there are no > > coregroups. However if its not a penultimate domain, then there are > > coregroups. There can be more than one coregroup. For now we would be > > interested in the last or the smallest coregroups. > > Should I know what a "coregroup" is? It's not a term I'm familiar with. >
Coregroup is a group or subset of cores from the same chip/DIE that share some resources. This is very similar to MC domain aka Multi-Core Cache (MC), (kernel/sched/topology.c) where cores share the same cache. In the Multi-Core Cache domain, all the cores of that domain share the last level of cache. Will add the description to the commit message. > When you repost can you expand the Cc list to include lkml and > scheduler/topology folks please. > Okay, will add them, I shall copy to LKML, Peter Zijlstra and Ingo Molnar. Do let me know if you want anyone else to added. > cheers -- Thanks and Regards Srikar Dronamraju
