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authorTang Chen <tangchen@cn.fujitsu.com>2013-02-22 16:33:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-23 17:50:12 -0800
commit5fc1d66a22384e7a09c74e4eb4bcb93165fb95f1 (patch)
treecd9f54c4b820fdf7575aa2d099fa1bf8682edb02 /mm/memory_hotplug.c
parent0197518cd3672029618a16a57597946a094ac7a8 (diff)
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memory-hotplug: integrated __remove_section() of CONFIG_SPARSEMEM_VMEMMAP.
Currently __remove_section for SPARSEMEM_VMEMMAP does nothing. But even if we use SPARSEMEM_VMEMMAP, we can unregister the memory_section. Signed-off-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
-rw-r--r--mm/memory_hotplug.c11
1 files changed, 0 insertions, 11 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 220459c9ff1..46c58be2fdc 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -432,16 +432,6 @@ static int __meminit __add_section(int nid, struct zone *zone,
return register_new_memory(nid, __pfn_to_section(phys_start_pfn));
}
-#ifdef CONFIG_SPARSEMEM_VMEMMAP
-static int __remove_section(struct zone *zone, struct mem_section *ms)
-{
- /*
- * XXX: Freeing memmap with vmemmap is not implement yet.
- * This should be removed later.
- */
- return -EBUSY;
-}
-#else
static int __remove_section(struct zone *zone, struct mem_section *ms)
{
int ret = -EINVAL;
@@ -456,7 +446,6 @@ static int __remove_section(struct zone *zone, struct mem_section *ms)
sparse_remove_one_section(zone, ms);
return 0;
}
-#endif
/*
* Reasonably generic function for adding memory. It is