Commit f5f1cc54 authored Jun 28, 2005 by Nathan Lynch Committed by Paul Mackerras Jun 28, 2005

[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>

parent a341ad97

arch/ppc64/kernel/sysfs.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -400,6 +400,11 @@ static int __init topology_init(void)
		struct cpu *c = &per_cpu(cpu_devices, cpu);

		#ifdef CONFIG_NUMA
		/* The node to which a cpu belongs can't be known
		* until the cpu is made present.
		*/
		parent = NULL;
		if (cpu_present(cpu))
		parent = &node_devices[cpu_to_node(cpu)];
		#endif
		/*