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-rw-r--r--include/linux/bitops.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 38c2fb7ebe0..6a2a19f14bb 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -76,6 +76,15 @@ static __inline__ int generic_fls(int x)
*/
#include <asm/bitops.h>
+
+static inline int generic_fls64(__u64 x)
+{
+ __u32 h = x >> 32;
+ if (h)
+ return fls(x) + 32;
+ return fls(x);
+}
+
static __inline__ int get_bitmask_order(unsigned int count)
{
int order;