[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>
diff --git a/include/asm-um/page.h b/include/asm-um/page.h
index f58aeda..bd850a2 100644
--- a/include/asm-um/page.h
+++ b/include/asm-um/page.h
@@ -116,24 +116,12 @@
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(v) pfn_valid(phys_to_pfn(__pa(v)))
-/* 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;
-}
-
extern struct page *arch_validate(struct page *page, int mask, int order);
#define HAVE_ARCH_VALIDATE
extern void arch_free_page(struct page *page, int order);
#define HAVE_ARCH_FREE_PAGE
+#include <asm-generic/page.h>
+
#endif