[PATCH] Register sysfs file for hotplugged new node

When new node becomes enable by hot-add, new sysfs file must be created for
new node.  So, if new node is enabled by add_memory(), register_one_node() is
called to create it.  In addition, I386's arch_register_node() and a part of
register_nodes() of powerpc are consolidated to register_one_node() as a
generic_code().

This is tested by Tiger4(IPF) with node hot-plug emulation.

Signed-off-by: Keiichiro Tokunaga <tokuanga.keiich@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 3 insertions, 6 deletions

diff --git a/arch/i386/kernel/topology.c b/arch/i386/kernel/topology.c
index 296355292c7c..1eecc2e1bd4b 100644
--- a/arch/i386/kernel/topology.c
+++ b/arch/i386/kernel/topology.c
@@ -38,7 +38,7 @@ int arch_register_cpu(int num){
 #ifdef CONFIG_NUMA
         int node = cpu_to_node(num);
         if (node_online(node))
-                parent = &node_devices[node].node;
+                parent = &node_devices[parent_node(node)];
 #endif /* CONFIG_NUMA */
 
         /*
@@ -61,7 +61,7 @@ void arch_unregister_cpu(int num) {
 #ifdef CONFIG_NUMA
         int node = cpu_to_node(num);
         if (node_online(node))
-                parent = &node_devices[node].node;
+                parent = &node_devices[parent_node(node)];
 #endif /* CONFIG_NUMA */
 
         return unregister_cpu(&cpu_devices[num].cpu, parent);
@@ -74,16 +74,13 @@ EXPORT_SYMBOL(arch_unregister_cpu);
 
 #ifdef CONFIG_NUMA
 #include <linux/mmzone.h>
-#include <asm/node.h>
-
-struct i386_node node_devices[MAX_NUMNODES];
 
 static int __init topology_init(void)
 {
         int i;
 
         for_each_online_node(i)
-                arch_register_node(i);
+                register_one_node(i);
 
         for_each_present_cpu(i)
                 arch_register_cpu(i);