xtensa: use the declarations provided by <asm/sections.h>

Cleanups:
  - Include <asm/sections.h>,
  - Remove the (different) extern declarations,
  - Remove the no longer needed address-of ('&') operators,
  - Use %p to format pointer differences.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/xtensa/mm/init.c b/arch/xtensa/mm/init.c
index c82af58f60bc77493fe11e54ba8038c738a4d021..db955179da2d5de8adac6a4ab66d4be17ec943fc 100644 (file)
--- a/arch/xtensa/mm/init.c
+++ b/arch/xtensa/mm/init.c
@@ -26,11 +26,7 @@
 
 #include <asm/bootparam.h>
 #include <asm/page.h>
-
-/* References to section boundaries */
-
-extern char _stext, _etext, _sdata, _edata, _rodata_end;
-extern char __init_begin, __init_end;
+#include <asm/sections.h>
 
 /*
  * mem_reserve(start, end, must_exist)
@@ -197,9 +193,9 @@ void __init mem_init(void)
                        reservedpages++;
        }
 
-       codesize =  (unsigned long) &_etext - (unsigned long) &_stext;
-       datasize =  (unsigned long) &_edata - (unsigned long) &_sdata;
-       initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
+       codesize =  (unsigned long) _etext - (unsigned long) _stext;
+       datasize =  (unsigned long) _edata - (unsigned long) _sdata;
+       initsize =  (unsigned long) __init_end - (unsigned long) __init_begin;
 
        printk("Memory: %luk/%luk available (%ldk kernel code, %ldk reserved, "
               "%ldk data, %ldk init %ldk highmem)\n",
@@ -237,7 +233,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 
 void free_initmem(void)
 {
-       free_reserved_mem(&__init_begin, &__init_end);
-       printk("Freeing unused kernel memory: %dk freed\n",
-              (&__init_end - &__init_begin) >> 10);
+       free_reserved_mem(__init_begin, __init_end);
+       printk("Freeing unused kernel memory: %zuk freed\n",
+              (__init_end - __init_begin) >> 10);
 }