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authorYasunori Goto <y-goto@jp.fujitsu.com>2006-06-27 05:53:38 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-27 20:32:36 -0400
commit0fc44159bfcb5b0afa178f9c3f50db23aebc76ff (patch)
treed87e47c0f5e6b2eff1d9113d3495d185924734d9 /mm
parent1f04bbd2d396a701c5af2e5b92bad896c2550c16 (diff)
[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>
Diffstat (limited to 'mm')
-rw-r--r--mm/memory_hotplug.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index f13783e81eb6..ea4038838b0a 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -256,9 +256,19 @@ int add_memory(int nid, u64 start, u64 size)
256 if (ret < 0) 256 if (ret < 0)
257 goto error; 257 goto error;
258 258
259 /* we online node here. we have no error path from here. */ 259 /* we online node here. we can't roll back from here. */
260 node_set_online(nid); 260 node_set_online(nid);
261 261
262 if (new_pgdat) {
263 ret = register_one_node(nid);
264 /*
265 * If sysfs file of new node can't create, cpu on the node
266 * can't be hot-added. There is no rollback way now.
267 * So, check by BUG_ON() to catch it reluctantly..
268 */
269 BUG_ON(ret);
270 }
271
262 /* register this memory as resource */ 272 /* register this memory as resource */
263 register_memory_resource(start, size); 273 register_memory_resource(start, size);
264 274