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Commit bf4b85b0 authored by Nathan Lynch's avatar Nathan Lynch Committed by Paul Mackerras
Browse files

[PATCH] powerpc numa: Minor debugging code changes 



Add debug statement for map_cpu_to_node; it's useful for cpu hotplug.

Clarify debug statement about not finding the numa reference points
property.

Don't print a meaningless associativity depth (-1) on non-numa systems.

Signed-off-by: default avatarNathan Lynch <nathanl@austin.ibm.com>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent c08888cf

arch/powerpc/mm/numa.c

+5 −3
Original line number Original line Diff line number Diff line
@@ -133,6 +133,8 @@ static inline void map_cpu_to_node(int cpu, int node) 
{

{

	numa_cpu_lookup_table[cpu] = node;

	numa_cpu_lookup_table[cpu] = node;





	dbg("adding cpu %d to node %d\n", cpu, node);



	if (!(cpu_isset(cpu, numa_cpumask_lookup_table[node])))

	if (!(cpu_isset(cpu, numa_cpumask_lookup_table[node])))

		cpu_set(cpu, numa_cpumask_lookup_table[node]);

		cpu_set(cpu, numa_cpumask_lookup_table[node]);

}

}
@@ -246,8 +248,7 @@ static int __init find_min_common_depth(void) 
	if ((len >= 1) && ref_points) {

	if ((len >= 1) && ref_points) {

		depth = ref_points[1];

		depth = ref_points[1];

	} else {

	} else {

		dbg("WARNING: could not find NUMA "

		dbg("NUMA: ibm,associativity-reference-points not found.\n");

		    "associativity reference point\n");

		depth = -1;

		depth = -1;

	}

	}

	of_node_put(rtas_root);

	of_node_put(rtas_root);
@@ -385,10 +386,11 @@ static int __init parse_numa_properties(void) 




	min_common_depth = find_min_common_depth();

	min_common_depth = find_min_common_depth();





	dbg("NUMA associativity depth for CPU/Memory: %d\n", min_common_depth);

	if (min_common_depth < 0)

	if (min_common_depth < 0)

		return min_common_depth;

		return min_common_depth;





	dbg("NUMA associativity depth for CPU/Memory: %d\n", min_common_depth);



	/*

	/*

	 * Even though we connect cpus to numa domains later in SMP init,

	 * Even though we connect cpus to numa domains later in SMP init,

	 * we need to know the maximum node id now. This is because each

	 * we need to know the maximum node id now. This is because each