x86, MM: virtual address debug, v2

I've removed the test from phys_to_nid and made a function from __phys_addr
only when the debugging is enabled (on x86_32).

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: tglx@linutronix.de
Cc: hpa@zytor.com
Cc: Mike Travis <travis@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: <x86@kernel.org>
Cc: linux-mm@kvack.org
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h
index 9159bfb9dcf9..71a2e424e584 100644
--- a/include/asm-x86/page_32.h
+++ b/include/asm-x86/page_32.h
@@ -65,7 +65,11 @@ typedef struct page *pgtable_t;
 
 #ifndef __ASSEMBLY__
 #define __phys_addr_const(x)    ((x) - PAGE_OFFSET)
+#ifdef CONFIG_DEBUG_VIRTUAL
 extern unsigned long __phys_addr(unsigned long);
+#else
+#define __phys_addr(x)          ((x) - PAGE_OFFSET)
+#endif
 #define __phys_reloc_hide(x)    RELOC_HIDE((x), 0)
 
 #ifdef CONFIG_FLATMEM