[PATCH] ppc64: don't create spurious symlinks under node0 sysdev
On partitioned systems we can wind up creating spurious symlinks in /sys/devices/system/node/node0 to non-present cpus. The symlinks are not broken; the problem is that we're potentially misinforming userspace that there is a relationship between node0 and cpus which are to be added later. There's no guarantee at all that a cpu which is added later will belong to node 0. Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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@ -400,7 +400,12 @@ static int __init topology_init(void)
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struct cpu *c = &per_cpu(cpu_devices, cpu);
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struct cpu *c = &per_cpu(cpu_devices, cpu);
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#ifdef CONFIG_NUMA
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#ifdef CONFIG_NUMA
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parent = &node_devices[cpu_to_node(cpu)];
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/* The node to which a cpu belongs can't be known
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* until the cpu is made present.
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*/
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parent = NULL;
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if (cpu_present(cpu))
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parent = &node_devices[cpu_to_node(cpu)];
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#endif
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#endif
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/*
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/*
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* For now, we just see if the system supports making
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* For now, we just see if the system supports making
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