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.
(Each arch defines like sysfs_nodes[] to describe its nodes
topology. I'm not sure they can be merged as generic code.)
Signed-off-by: Keiichiro Tokunaga <[email protected]>
Signed-off-by: Yasunori Goto <[email protected]>
Index: pgdat6/arch/ia64/kernel/topology.c
===================================================================
--- pgdat6.orig/arch/ia64/kernel/topology.c 2006-03-06 18:25:31.000000000 +0900
+++ pgdat6/arch/ia64/kernel/topology.c 2006-03-06 18:26:33.000000000 +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: pgdat6/include/asm-ia64/numa.h
===================================================================
--- pgdat6.orig/include/asm-ia64/numa.h 2006-03-06 18:24:01.000000000 +0900
+++ pgdat6/include/asm-ia64/numa.h 2006-03-06 18:26:33.000000000 +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