arch/x86/mm/init_64.c: fix build warning when CONFIG_MEMORY_HOTREMOVE=n

There is a warning while building kernel with
CONFIG_MEMORY_HOTPLUG=y && CONFIG_MEMORY_HOTREMOVE=n:
arch/x86/mm/init_64.c:1024: warning:kernel_physical_mapping_remove defined but not used

So move kernel_physical_mapping_remove() into "#ifdef
CONFIG_MEMORY_HOTREMOVE" block

Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Cc: Wen Congyang <wency@cn.fujitsu.com>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Liujiang <jiang.liu@huawei.com>
Cc: qiuxishi <qiuxishi@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>

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index 474e28f108151c67830a6e36476ff44ab4802126..dafdeb2a59380539d463af6a8ac28a3dc19a8d36 100644 (file)
--- 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);
 }
 
+#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;