X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=include%2Flinux%2Fmath64.h;h=c87f1528703a68c2dd024d612a203ae4517b5cea;hb=ca31e146d5c2fe51498e619eb3a64782d02e310a;hp=c1a5f81501ff9f3f16edbd9c8e10aec48408aeee;hpb=a15306365a16380f3bafee9e181ba01231d4acd7;p=linux-2.6-omap-h63xx.git

diff --git a/include/linux/math64.h b/include/linux/math64.h
index c1a5f81501f..c87f1528703 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -81,4 +81,25 @@ static inline s64 div_s64(s64 dividend, s32 divisor)
 }
 #endif
 
+u32 iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder);
+
+static __always_inline u32
+__iter_div_u64_rem(u64 dividend, u32 divisor, u64 *remainder)
+{
+	u32 ret = 0;
+
+	while (dividend >= divisor) {
+		/* The following asm() prevents the compiler from
+		   optimising this loop into a modulo operation.  */
+		asm("" : "+rm"(dividend));
+
+		dividend -= divisor;
+		ret++;
+	}
+
+	*remainder = dividend;
+
+	return ret;
+}
+
 #endif /* _LINUX_MATH64_H */