[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, 15 deletions

diff --git a/include/asm-frv/page.h b/include/asm-frv/page.h
index f7914f1782b0..4feba567e7fd 100644
--- a/include/asm-frv/page.h
+++ b/include/asm-frv/page.h
@@ -45,21 +45,6 @@ typedef struct { unsigned long	pgprot;	} pgprot_t;
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr)        (((addr) + PAGE_SIZE - 1) & PAGE_MASK)
 
-/* Pure 2^n version of get_order */
-static inline int get_order(unsigned long size) __attribute_const__;
-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;
-}
-
 #define devmem_is_allowed(pfn)  1
 
 #define __pa(vaddr)             virt_to_phys((void *) vaddr)
@@ -102,4 +87,6 @@ extern unsigned long max_pfn;
 #define WANT_PAGE_VIRTUAL       1
 #endif
 
+#include <asm-generic/page.h>
+
 #endif /* _ASM_PAGE_H */