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x86/mm/hotplug: Put kernel_physical_mapping_remove() declaration in CONFIG_MEMORY_HOTREMOVE 

kernel_physical_mapping_remove() is only called by
arch_remove_memory() in init_64.c, which is enclosed in
CONFIG_MEMORY_HOTREMOVE. So when we don't configure
CONFIG_MEMORY_HOTREMOVE, the compiler will give a warning:

	warning: ‘kernel_physical_mapping_remove’ defined but not used

So put kernel_physical_mapping_remove() in
CONFIG_MEMORY_HOTREMOVE.

Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: linux-mm@kvack.org
Cc: gregkh@linuxfoundation.org
Cc: yinghai@kernel.org
Cc: wency@cn.fujitsu.com
Cc: mgorman@suse.de
Cc: tj@kernel.org
Cc: liwanp@linux.vnet.ibm.com
Link: http://lkml.kernel.org/r/1366019207-27818-3-git-send-email-tangchen@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Tang Chen 2013-04-15 17:46:46 +08:00 committed by Ingo Molnar
parent a7e6567585
commit 587ff8c4ea
1 changed files with 1 additions and 1 deletions
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2
arch/x86/mm/init_64.c
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@ -1019,6 +1019,7 @@ void __ref vmemmap_free(struct page *memmap, unsigned long nr_pages)
remove_pagetable(start, end, false);
}
#ifdef CONFIG_MEMORY_HOTREMOVE
static void __meminit
kernel_physical_mapping_remove(unsigned long start, unsigned long end)
{
@ -1028,7 +1029,6 @@ kernel_physical_mapping_remove(unsigned long start, unsigned long end)
remove_pagetable(start, end, true);
}
#ifdef CONFIG_MEMORY_HOTREMOVE
int __ref arch_remove_memory(u64 start, u64 size)
{
unsigned long start_pfn = start >> PAGE_SHIFT;