Re: [PATCH v4 0/5] Early node associativity

Nathan Lynch [off-list ref] writes:

Srikar Dronamraju [off-list ref] writes:

quoted

Abdul reported  a warning on a shared lpar.
"WARNING: workqueue cpumask: online intersect > possible intersect".
This is because per node workqueue possible mask is set very early in the
boot process even before the system was querying the home node
associativity. However per node workqueue online cpumask gets updated
dynamically. Hence there is a chance when per node workqueue online cpumask
is a superset of per node workqueue possible mask.

Sorry for the delay in following up on these. The series looks good to
me, and I've given it a little testing with LPM and DLPAR. I've also
verified that the cpu assignments occur early as intended on an LPAR
where that workqueue warning had been triggered.

If this is applied I think we can remove about 500 loc from numa.c. Once
splpar cpu-node assignments are done in the same sequence as with
dedicated processor mode, numa_update_cpu_topology() and related code
becomes unneeded.

Michael?