X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-ia64%2Fbitops.h;h=e2ca800373351d26b1042394275ebe10f6c8d23e;hb=4a4a9e81aed702421ef3e782f82d4e929fb81796;hp=953d3df9dd22670f16fec92440a9dc18f5431593;hpb=a29961b33b089cf4d252ac125891a2784d20ef2f;p=linux-2.6-omap-h63xx.git

diff --git a/include/asm-ia64/bitops.h b/include/asm-ia64/bitops.h
index 953d3df9dd2..e2ca8003733 100644
--- a/include/asm-ia64/bitops.h
+++ b/include/asm-ia64/bitops.h
@@ -407,6 +407,22 @@ fls (int t)
 	return ia64_popcnt(x);
 }
 
+/*
+ * Find the last (most significant) bit set.  Undefined for x==0.
+ * Bits are numbered from 0..63 (e.g., __fls(9) == 3).
+ */
+static inline unsigned long
+__fls (unsigned long x)
+{
+	x |= x >> 1;
+	x |= x >> 2;
+	x |= x >> 4;
+	x |= x >> 8;
+	x |= x >> 16;
+	x |= x >> 32;
+	return ia64_popcnt(x) - 1;
+}
+
 #include <asm-generic/bitops/fls64.h>
 
 /*