[PATCH 2/2] arm64: Use the generic builtin-* ffs/fls implementation

[Catalin Marinas]

This patch removes the arm64-specific ffs/fls implementation and
includes the generic gcc builtins implementation.

Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
---
 arch/arm64/include/asm/bitops.h |   31 +++++--------------------------
 1 files changed, 5 insertions(+), 26 deletions(-)

diff --git a/arch/arm64/include/asm/bitops.h b/arch/arm64/include/asm/bitops.h
index 67df4d2..5e69307 100644
--- a/arch/arm64/include/asm/bitops.h
+++ b/arch/arm64/include/asm/bitops.h
@@ -28,36 +28,15 @@
 #define smp_mb__after_clear_bit()	smp_mb()
 #endif
 
-/*
- * Use compiler builtins for simple inline operations.
- */
-static inline unsigned long __ffs(unsigned long word)
-{
-	return __builtin_ffsl(word) - 1;
-}
-
-static inline int ffs(int x)
-{
-	return __builtin_ffs(x);
-}
-
-static inline unsigned long __fls(unsigned long word)
-{
-	return BITS_PER_LONG - 1 - __builtin_clzl(word);
-}
-
-static inline int fls(int x)
-{
-	return x ? sizeof(x) * BITS_PER_BYTE - __builtin_clz(x) : 0;
-}
-
-/*
- * Mainly use the generic routines for now.
- */
 #ifndef _LINUX_BITOPS_H
 #error only <linux/bitops.h> can be included directly
 #endif
 
+#include <asm-generic/bitops/builtin-__ffs.h>
+#include <asm-generic/bitops/builtin-ffs.h>
+#include <asm-generic/bitops/builtin-__fls.h>
+#include <asm-generic/bitops/builtin-fls.h>
+
 #include <asm-generic/bitops/ffz.h>
 #include <asm-generic/bitops/fls64.h>
 #include <asm-generic/bitops/find.h>
--
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