[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, 2 insertions, 13 deletions

diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 5bc2585c8036..338491d1604a 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -304,23 +304,12 @@ static struct notifier_block sysfs_cpu_nb = {
 /* NUMA stuff */
 
 #ifdef CONFIG_NUMA
-static struct node node_devices[MAX_NUMNODES];
-
 static void register_nodes(void)
 {
         int i;
 
-        for (i = 0; i < MAX_NUMNODES; i++) {
-                if (node_online(i)) {
-                        int p_node = parent_node(i);
-                        struct node *parent = NULL;
-
-                        if (p_node != i)
-                                parent = &node_devices[p_node];
-
-                        register_node(&node_devices[i], i, parent);
-                }
-        }
+        for (i = 0; i < MAX_NUMNODES; i++)
+                register_one_node(i);
 }
 
 int sysfs_add_device_to_node(struct sys_device *dev, int nid)