[PATCH] mm: consolidate get_order

Someone mentioned that almost all the architectures used basically the same
implementation of get_order.  This patch consolidates them into
asm-generic/page.h and includes that in the appropriate places.  The
exceptions are ia64 and ppc which have their own (presumably optimised)
versions.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 14 deletions

diff --git a/include/asm-mips/page.h b/include/asm-mips/page.h
index 5cae35cd9ba9..652b6d67a571 100644
--- a/include/asm-mips/page.h
+++ b/include/asm-mips/page.h
@@ -103,20 +103,6 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define __pgd(x)        ((pgd_t) { (x) } )
 #define __pgprot(x)     ((pgprot_t) { (x) } )
 
-/* Pure 2^n version of get_order */
-static __inline__ int get_order(unsigned long size)
-{
-        int order;
-
-        size = (size-1) >> (PAGE_SHIFT-1);
-        order = -1;
-        do {
-                size >>= 1;
-                order++;
-        } while (size);
-        return order;
-}
-
 #endif /* !__ASSEMBLY__ */
 
 /* to align the pointer to the (next) page boundary */
@@ -148,4 +134,6 @@ static __inline__ int get_order(unsigned long size)
 #define WANT_PAGE_VIRTUAL
 #endif
 
+#include <asm-generic/page.h>
+
 #endif /* _ASM_PAGE_H */