[PATCH: 017/017]Memory hotplug for new nodes v.4.(arch_register_node() for ia64)

Yasunori Goto
2006-03-17T08:23:09Z

This is to create sysfs file for new node.
It adds arch specific functions 'arch_register_node()'
and 'arch_unregister_node()' to IA64 to call the generic
function 'register_node()' and 'unregister_node()' respectively.

Signed-off-by: Keiichiro Tokunaga <tokuanga.keiich@jp.fujitsu.com>
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>

arch/ia64/kernel/topology.c | 15 +++++++++++++++
include/linux/node.h | 2 ++
2 files changed, 17 insertions(+)

Index: pgdat8/arch/ia64/kernel/topology.c
=================================--- pgdat8.orig/arch/ia64/kernel/topology.c 2006-03-16 16:04:54.000000000 +0900
+++ pgdat8/arch/ia64/kernel/topology.c 2006-03-16 16:06:27.000000000 +0900
@@ -65,6 +65,21 @@ EXPORT_SYMBOL(arch_register_cpu);
EXPORT_SYMBOL(arch_unregister_cpu);
#endif /*CONFIG_HOTPLUG_CPU*/

+#ifdef CONFIG_NUMA
+int arch_register_node(int num)
+{
+ if (sysfs_nodes[num].sysdev.id = num)
+ return 0;
+
+ return register_node(&sysfs_nodes[num], num, 0);
+}
+
+void arch_unregister_node(int num)
+{
+ unregister_node(&sysfs_nodes[num]);
+ sysfs_nodes[num].sysdev.id = -1;
+}
+#endif

static int __init topology_init(void)
{
Index: pgdat8/include/linux/node.h
=================================--- pgdat8.orig/include/linux/node.h 2006-03-16 16:04:54.000000000 +0900
+++ pgdat8/include/linux/node.h 2006-03-16 16:06:27.000000000 +0900
@@ -28,6 +28,8 @@ struct node {

extern int register_node(struct node *, int, struct node *);
extern void unregister_node(struct node *node);
+extern int arch_register_node(int num);
+extern void arch_unregister_node(int num);

#define to_node(sys_device) container_of(sys_device, struct node, sysdev)