[PATCH 2/3] mem-hotplug: Put kernel_physical_mapping_remove() declaration in CONFIG_MEMORY_HOTREMOVE.

From: Tang Chen
Date: Mon Apr 15 2013 - 05:44:29 EST

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: âkernel_physical_mapping_removeâ defined but not used

So put kernel_physical_mapping_remove() in CONFIG_MEMORY_HOTREMOVE.

Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
arch/x86/mm/init_64.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 474e28f..dafdeb2 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -1019,6 +1019,7 @@ void __ref vmemmap_free(struct page *memmap, unsigned long nr_pages)
remove_pagetable(start, end, false);

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);

int __ref arch_remove_memory(u64 start, u64 size)
unsigned long start_pfn = start >> PAGE_SHIFT;

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