From 5b17e1cd8928ae65932758ce6478ac6d3e9a86b2 Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Wed, 13 May 2009 22:56:30 +0000
Subject: asm-generic: rename page.h and uaccess.h
The current asm-generic/page.h only contains the get_order
function, and asm-generic/uaccess.h only implements
unaligned accesses. This renames the file to getorder.h
and uaccess-unaligned.h to make room for new page.h
and uaccess.h file that will be usable by all simple
(e.g. nommu) architectures.
Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
include/asm-generic/getorder.h | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
create mode 100644 include/asm-generic/getorder.h
(limited to 'include/asm-generic/getorder.h')
diff --git a/include/asm-generic/getorder.h b/include/asm-generic/getorder.h
new file mode 100644
index 00000000000..67e7245dc9b
--- /dev/null
+++ b/include/asm-generic/getorder.h
@@ -0,0 +1,24 @@
+#ifndef __ASM_GENERIC_GETORDER_H
+#define __ASM_GENERIC_GETORDER_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/compiler.h>
+
+/* Pure 2^n version of get_order */
+static inline __attribute_const__ 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__ */
+
+#endif /* __ASM_GENERIC_GETORDER_H */
--
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