[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, 3 insertions, 14 deletions

diff --git a/include/asm-ppc64/page.h b/include/asm-ppc64/page.h
index a79a08df62bd..a15422bcf30d 100644
--- a/include/asm-ppc64/page.h
+++ b/include/asm-ppc64/page.h
@@ -172,20 +172,6 @@ typedef unsigned long pgprot_t;
 
 #endif
 
-/* 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;
-}
-
 #define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
 
 extern int page_is_ram(unsigned long pfn);
@@ -270,4 +256,7 @@ extern u64 ppc64_pft_size;		/* Log 2 of page table size */
          VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
 
 #endif /* __KERNEL__ */
+
+#include <asm-generic/page.h>
+
 #endif /* _PPC64_PAGE_H */