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[PATCH] Register sysfs file for hotplugged new node

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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>
This commit is contained in:
Yasunori Goto
2006-06-27 02:53:38 -07:00
committed by Linus Torvalds
parent 1f04bbd2d3
commit 0fc44159bf
8 changed files with 48 additions and 63 deletions
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mm/memory_hotplug.c
+11 -1
View File
@@ -256,9 +256,19 @@ int add_memory(int nid, u64 start, u64 size)
if (ret < 0)
goto error;
/* we online node here. we have no error path from here. */
/* we online node here. we can't roll back from here. */
node_set_online(nid);
if (new_pgdat) {
ret = register_one_node(nid);
/*
* If sysfs file of new node can't create, cpu on the node
* can't be hot-added. There is no rollback way now.
* So, check by BUG_ON() to catch it reluctantly..
*/
BUG_ON(ret);
}
/* register this memory as resource */
register_memory_resource(start, size);