From 2dfc383ad587bbead84739a9ff9273df3eda983d Mon Sep 17 00:00:00 2001
From: Akinobu Mita <mita@miraclelinux.com>
Date: Sun, 26 Mar 2006 01:39:10 -0800
Subject: [PATCH] [PATCH] bitops: generic fls64()
This patch introduces the C-language equivalent of the function: int
fls64(__u64 x);
In include/asm-generic/bitops/fls64.h
This code largely copied from: include/linux/bitops.h
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
include/asm-generic/bitops/fls64.h | 12 ++++++++++++
1 file changed, 12 insertions(+)
create mode 100644 include/asm-generic/bitops/fls64.h
diff --git a/include/asm-generic/bitops/fls64.h b/include/asm-generic/bitops/fls64.h
new file mode 100644
index 0000000000000..716c51e0dd4c2
--- /dev/null
+++ b/include/asm-generic/bitops/fls64.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_GENERIC_BITOPS_FLS64_H_
+#define _ASM_GENERIC_BITOPS_FLS64_H_
+
+static inline int fls64(__u64 x)
+{
+ __u32 h = x >> 32;
+ if (h)
+ return fls(h) + 32;
+ return fls(x);
+}
+
+#endif /* _ASM_GENERIC_BITOPS_FLS64_H_ */
--
2.30.2