[PATCH] memory hotplug: fix compile error for i386 with NUMA config

Fix compile error when config memory hotplug with numa on i386.

The cause of compile error was missing of arch_add_memory(),
remove_memory(), and memory_add_physaddr_to_nid().

Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@cs.washington.edu>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 8 deletions

diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 84697dfc7348..60a7e57af197 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -673,16 +673,10 @@ void __init mem_init(void)
 #endif
 }
 
-/*
- * this is for the non-NUMA, single node SMP system case.
- * Specifically, in the case of x86, we will always add
- * memory to the highmem for now.
- */
 #ifdef CONFIG_MEMORY_HOTPLUG
-#ifndef CONFIG_NEED_MULTIPLE_NODES
 int arch_add_memory(int nid, u64 start, u64 size)
 {
-        struct pglist_data *pgdata = &contig_page_data;
+        struct pglist_data *pgdata = NODE_DATA(nid);
         struct zone *zone = pgdata->node_zones + ZONE_HIGHMEM;
         unsigned long start_pfn = start >> PAGE_SHIFT;
         unsigned long nr_pages = size >> PAGE_SHIFT;
@@ -694,7 +688,7 @@ int remove_memory(u64 start, u64 size)
 {
         return -EINVAL;
 }
-#endif
+EXPORT_SYMBOL_GPL(remove_memory);
 #endif
 
 struct kmem_cache *pgd_cache;