X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fia64%2Fmm%2Fnuma.c;h=7807fc5c04224fcad33d98a83d96a48a1df25423;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=ef2dbcfdad80cc545467a56795149b24ffc22aae;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/ia64/mm/numa.c b/arch/ia64/mm/numa.c
index ef2dbcfda..7807fc5c0 100644
--- a/arch/ia64/mm/numa.c
+++ b/arch/ia64/mm/numa.c
@@ -10,18 +10,16 @@
  *                         2002/08/07 Erich Focht <efocht@ess.nec.de>
  */
 
-#include <linux/config.h>
 #include <linux/cpu.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/node.h>
 #include <linux/init.h>
 #include <linux/bootmem.h>
+#include <linux/module.h>
 #include <asm/mmzone.h>
 #include <asm/numa.h>
 
-static struct node *sysfs_nodes;
-static struct cpu *sysfs_cpus;
 
 /*
  * The following structures are usually initialized by ACPI or
@@ -50,36 +48,43 @@ paddr_to_nid(unsigned long paddr)
 	return (i < num_node_memblks) ? node_memblk[i].nid : (num_node_memblks ? -1 : 0);
 }
 
-static int __init topology_init(void)
+#if defined(CONFIG_SPARSEMEM) && defined(CONFIG_NUMA)
+/*
+ * Because of holes evaluate on section limits.
+ * If the section of memory exists, then return the node where the section
+ * resides.  Otherwise return node 0 as the default.  This is used by
+ * SPARSEMEM to allocate the SPARSEMEM sectionmap on the NUMA node where
+ * the section resides.
+ */
+int early_pfn_to_nid(unsigned long pfn)
 {
-	int i, err = 0;
+	int i, section = pfn >> PFN_SECTION_SHIFT, ssec, esec;
 
-	sysfs_nodes = kmalloc(sizeof(struct node) * numnodes, GFP_KERNEL);
-	if (!sysfs_nodes) {
-		err = -ENOMEM;
-		goto out;
+	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)
+			return node_memblk[i].nid;
 	}
-	memset(sysfs_nodes, 0, sizeof(struct node) * numnodes);
 
-	sysfs_cpus = kmalloc(sizeof(struct cpu) * NR_CPUS, GFP_KERNEL);
-	if (!sysfs_cpus) {
-		kfree(sysfs_nodes);
-		err = -ENOMEM;
-		goto out;
-	}
-	memset(sysfs_cpus, 0, sizeof(struct cpu) * NR_CPUS);
+	return 0;
+}
 
-	for (i = 0; i < numnodes; i++)
-		if ((err = register_node(&sysfs_nodes[i], i, 0)))
-			goto out;
+#ifdef CONFIG_MEMORY_HOTPLUG
+/*
+ *  SRAT information is stored in node_memblk[], then we can use SRAT
+ *  information at memory-hot-add if necessary.
+ */
 
-	for (i = 0; i < NR_CPUS; i++)
-		if (cpu_online(i))
-			if((err = register_cpu(&sysfs_cpus[i], i,
-					       &sysfs_nodes[cpu_to_node(i)])))
-				goto out;
- out:
-	return err;
+int memory_add_physaddr_to_nid(u64 addr)
+{
+	int nid = paddr_to_nid(addr);
+	if (nid < 0)
+		return 0;
+	return nid;
 }
 
-__initcall(topology_init);
+EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
+#endif
+#endif