patch-2.4.23 linux-2.4.23/include/asm-ia64/bitops.h

• Lines: 22
• Date: 2003-11-28 10:26:21.000000000 -0800
• Orig file: linux-2.4.22/include/asm-ia64/bitops.h
• Orig date: 2003-08-25 04:44:43.000000000 -0700

diff -urN linux-2.4.22/include/asm-ia64/bitops.h linux-2.4.23/include/asm-ia64/bitops.h
@@ -282,6 +282,21 @@
 	return result;
 }
 
+/**
+ * __ffs - find first bit in word.
+ * @x: The word to search
+ *
+ * Undefined if no bit exists, so code should check against 0 first.
+ */
+static __inline__ unsigned long
+__ffs (unsigned long x)
+{
+	unsigned long result;
+
+	__asm__ ("popcnt %0=%1" : "=r" (result) : "r" ((x - 1) & ~x));
+	return result;
+}
+
 #ifdef __KERNEL__
 
 /*