[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-arm/page.h b/include/asm-arm/page.h
index 019c45d75730..4da1d532cbeb 100644
--- a/include/asm-arm/page.h
+++ b/include/asm-arm/page.h
@@ -163,20 +163,6 @@ typedef unsigned long pgprot_t;
 /* the upper-most page table pointer */
 extern pmd_t *top_pmd;
 
-/* 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;
-}
-
 #include <asm/memory.h>
 
 #endif /* !__ASSEMBLY__ */
@@ -186,4 +172,6 @@ static inline int get_order(unsigned long size)
 
 #endif /* __KERNEL__ */
 
+#include <asm-generic/page.h>
+
 #endif