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authorKAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>2007-10-16 01:26:13 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-16 09:43:02 -0700
commitde33b821f34dc9e2fabf81a8ba464f3ef039bd00 (patch)
treefa7486b6a5ab054b7c220559e4af262629579a26 /arch/ia64
parent0c0e6195896535481173df98935ad8db174f4d45 (diff)
downloadop-kernel-dev-de33b821f34dc9e2fabf81a8ba464f3ef039bd00.zip
op-kernel-dev-de33b821f34dc9e2fabf81a8ba464f3ef039bd00.tar.gz
memory unplug: ia64 interface
IA64 memory unplug interface. Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/mm/init.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index a096b30..947ec0c 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -721,7 +721,17 @@ int arch_add_memory(int nid, u64 start, u64 size)
int remove_memory(u64 start, u64 size)
{
- return -EINVAL;
+ unsigned long start_pfn, end_pfn;
+ unsigned long timeout = 120 * HZ;
+ int ret;
+ start_pfn = start >> PAGE_SHIFT;
+ end_pfn = start_pfn + (size >> PAGE_SHIFT);
+ ret = offline_pages(start_pfn, end_pfn, timeout);
+ if (ret)
+ goto out;
+ /* we can free mem_map at this point */
+out:
+ return ret;
}
EXPORT_SYMBOL_GPL(remove_memory);
#endif
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