X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fia64%2Fkernel%2Fnuma.c;h=a78b45f5fe2f9d3aef7c9c8aa8012987b0558a0e;hb=26b6f2236615649a0ae6a0de2e9e71a2f9ffeba7;hp=1cc360c83e7af01b1ddfc632d3a7f5f071764363;hpb=6ab3d5624e172c553004ecc862bfeac16d9d68b7;p=linux-2.6-omap-h63xx.git

diff --git a/arch/ia64/kernel/numa.c b/arch/ia64/kernel/numa.c
index 1cc360c83e7..a78b45f5fe2 100644
--- a/arch/ia64/kernel/numa.c
+++ b/arch/ia64/kernel/numa.c
@@ -28,6 +28,37 @@ u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
 EXPORT_SYMBOL(cpu_to_node_map);
 
 cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
+EXPORT_SYMBOL(node_to_cpu_mask);
+
+void __cpuinit map_cpu_to_node(int cpu, int nid)
+{
+	int oldnid;
+	if (nid < 0) { /* just initialize by zero */
+		cpu_to_node_map[cpu] = 0;
+		return;
+	}
+	/* sanity check first */
+	oldnid = cpu_to_node_map[cpu];
+	if (cpu_isset(cpu, node_to_cpu_mask[oldnid])) {
+		return; /* nothing to do */
+	}
+	/* we don't have cpu-driven node hot add yet...
+	   In usual case, node is created from SRAT at boot time. */
+	if (!node_online(nid))
+		nid = first_online_node;
+	cpu_to_node_map[cpu] = nid;
+	cpu_set(cpu, node_to_cpu_mask[nid]);
+	return;
+}
+
+void __cpuinit unmap_cpu_from_node(int cpu, int nid)
+{
+	WARN_ON(!cpu_isset(cpu, node_to_cpu_mask[nid]));
+	WARN_ON(cpu_to_node_map[cpu] != nid);
+	cpu_to_node_map[cpu] = 0;
+	cpu_clear(cpu, node_to_cpu_mask[nid]);
+}
+
 
 /**
  * build_cpu_to_node_map - setup cpu to node and node to cpumask arrays
@@ -49,8 +80,6 @@ void __init build_cpu_to_node_map(void)
 				node = node_cpuid[i].nid;
 				break;
 			}
-		cpu_to_node_map[cpu] = (node >= 0) ? node : 0;
-		if (node >= 0)
-			cpu_set(cpu, node_to_cpu_mask[node]);
+		map_cpu_to_node(cpu, node);
 	}
 }