patch-2.3.46 linux/include/asm-ppc/page.h

• Lines: 22
• Date: Mon Feb 14 15:34:21 2000
• Orig file: v2.3.45/linux/include/asm-ppc/page.h
• Orig date: Sun Feb 13 19:29:04 2000

diff -u --recursive --new-file v2.3.45/linux/include/asm-ppc/page.h linux/include/asm-ppc/page.h
@@ -113,6 +113,21 @@
 #define MAP_PAGE_RESERVED	(1<<15)
 
 extern unsigned long get_zero_page_fast(void);
+
+/* Pure 2^n version of get_order */
+extern __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;
+}
+
 #endif /* __KERNEL__ */
 #endif /* __ASSEMBLY__ */
 #endif /* _PPC_PAGE_H */