[2/2] powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update

Michael Ellerman mpe at ellerman.id.au
Tue Oct 21 15:36:27 AEDT 2014

On Sat, 2014-18-10 at 00:50:40 UTC, Nishanth Aravamudan wrote:
> We received a report of warning in kernel/sched/core.c where the sched
> group was NULL on an LPAR after a topology update. This seems to occur
> because after the topology update has moved the CPUs, cpu_to_node is
> returning the old value still, which ends up breaking the consistency of
> the NUMA topology in the per-cpu maps. Ensure that we update the per-cpu
> fields when we re-map CPUs.

This looks like a bug fix, I assume you want it to go in for 3.18 ?


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