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powerpc/vphn: Fix numa update end-loop bug
powerpc/vphn: On Power systems with shared configurations of CPUs and memory, there are some issues with the association of additional CPUs and memory to nodes when hot-adding resources. This patch fixes an end-of-updates processing problem observed occasionally in numa_update_cpu_topology(). Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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@ -1401,16 +1401,22 @@ int numa_update_cpu_topology(bool cpus_locked)
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for_each_cpu(sibling, cpu_sibling_mask(cpu)) {
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ud = &updates[i++];
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ud->next = &updates[i];
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ud->cpu = sibling;
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ud->new_nid = new_nid;
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ud->old_nid = numa_cpu_lookup_table[sibling];
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cpumask_set_cpu(sibling, &updated_cpus);
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if (i < weight)
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ud->next = &updates[i];
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}
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cpu = cpu_last_thread_sibling(cpu);
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}
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/*
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* Prevent processing of 'updates' from overflowing array
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* where last entry filled in a 'next' pointer.
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*/
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if (i)
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updates[i-1].next = NULL;
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pr_debug("Topology update for the following CPUs:\n");
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if (cpumask_weight(&updated_cpus)) {
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for (ud = &updates[0]; ud; ud = ud->next) {
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