lkml.org 
[lkml]   [2006]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH: 017/017](RFC) Memory hotplug for new nodes v.3. (arch_register_node() for ia64)

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

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


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-03-08 14:47    [from the cache]
©2003-2011 Jasper Spaans