On Sat, Aug 21, 2021 at 03:55:32PM +0530, Srikar Dronamraju wrote: > Scheduler expects unique number of node distances to be available > at boot. It uses node distance to calculate this unique node > distances. On Power Servers, node distances for offline nodes is not > available. However, Power Servers already knows unique possible node > distances. Fake the offline node's distance_lookup_table entries so > that all possible node distances are updated. > > For example distance info from numactl from a fully populated 8 node > system at boot may look like this. > > node distances: > node 0 1 2 3 4 5 6 7 > 0: 10 20 40 40 40 40 40 40 > 1: 20 10 40 40 40 40 40 40 > 2: 40 40 10 20 40 40 40 40 > 3: 40 40 20 10 40 40 40 40 > 4: 40 40 40 40 10 20 40 40 > 5: 40 40 40 40 20 10 40 40 > 6: 40 40 40 40 40 40 10 20 > 7: 40 40 40 40 40 40 20 10 > > However the same system when only two nodes are online at boot, then > distance info from numactl will look like > node distances: > node 0 1 > 0: 10 20 > 1: 20 10 > > With the faked numa distance at boot, the node distance table will look > like > node 0 1 2 > 0: 10 20 40 > 1: 20 10 40 > 2: 40 40 10 > > The actual distance will be populated once the nodes are onlined.
How did you want all this merged? I picked up Valentin's patch, do you want me to pick up these PowerPC patches in the same tree, or do you want to route them seperately?
