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Subject[PATCH: 006/012] Memory hotplug for new nodes v.2.(create sysfs for node (ia64))

'register_node()' is to create sysfs file for node.
This is to add 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>


Index: pgdat3/arch/ia64/kernel/topology.c
===================================================================
--- pgdat3.orig/arch/ia64/kernel/topology.c 2006-02-17 15:58:03.000000000 +0900
+++ pgdat3/arch/ia64/kernel/topology.c 2006-02-17 16:17:01.000000000 +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: pgdat3/include/asm-ia64/numa.h
===================================================================
--- pgdat3.orig/include/asm-ia64/numa.h 2005-03-02 16:37:55.000000000 +0900
+++ pgdat3/include/asm-ia64/numa.h 2006-02-17 16:17:01.000000000 +0900
@@ -23,6 +23,9 @@

#include <asm/mmzone.h>

+extern int arch_register_node(int num);
+extern void arch_unregister_node(int num);
+
extern u8 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;

--
Yasunori Goto


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