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-rw-r--r--arch/ia64/mm/numa.c20
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index 3efea7d..4248492 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -61,18 +61,36 @@ paddr_to_nid(unsigned long paddr)
int __meminit __early_pfn_to_nid(unsigned long pfn)
{
int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
+ /*
+ * NOTE: The following SMP-unsafe globals are only used early in boot
+ * when the kernel is running single-threaded.
+ */
+ static int __meminitdata last_ssec, last_esec;
+ static int __meminitdata last_nid;
+
+ if (section >= last_ssec && section < last_esec)
+ return last_nid;
for (i = 0; i < num_node_memblks; i++) {
ssec = node_memblk[i].start_paddr >> PA_SECTION_SHIFT;
esec = (node_memblk[i].start_paddr + node_memblk[i].size +
((1L << PA_SECTION_SHIFT) - 1)) >> PA_SECTION_SHIFT;
- if (section >= ssec && section < esec)
+ if (section >= ssec && section < esec) {
+ last_ssec = ssec;
+ last_esec = esec;
+ last_nid = node_memblk[i].nid;
return node_memblk[i].nid;
+ }
}
return -1;
}
+void __cpuinit numa_clear_node(int cpu)
+{
+ unmap_cpu_from_node(cpu, NUMA_NO_NODE);
+}
+
#ifdef CONFIG_MEMORY_HOTPLUG
/*
* SRAT information is stored in node_memblk[], then we can use SRAT
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