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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>
This commit is contained in:
KAMEZAWA Hiroyuki 2007-10-16 01:26:13 -07:00 committed by Linus Torvalds
parent 0c0e619589
commit de33b821f3
1 changed files with 11 additions and 1 deletions
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12
arch/ia64/mm/init.c
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@ -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