Thread (14 messages) flat view 14 messages, 2 authors, 2019-11-15

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

From: Nathan Lynch <hidden>
Date: 2019-10-02 18:05:16

Hi Srikar,

Srikar Dronamraju [off-list ref] writes:
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.
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