diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/Kconfig | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/bitops.h | 27 |
2 files changed, 1 insertions, 34 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 0153275e9f75..b50d46d214f6 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -109,14 +109,6 @@ config GENERIC_LOCKBREAK default y depends on SMP && PREEMPT -config ARCH_HAS_ILOG2_U32 - bool - default y - -config ARCH_HAS_ILOG2_U64 - bool - default y if 64BIT - config GENERIC_HWEIGHT bool default y diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index d835cd697d6b..b750ffef83c7 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -206,32 +206,7 @@ static __inline__ void __clear_bit_unlock(int nr, volatile unsigned long *addr) * Return the zero-based bit position (LE, not IBM bit numbering) of * the most significant 1-bit in a double word. */ -static __inline__ __attribute__((const)) -int __ilog2(unsigned long x) -{ - int lz; - - asm (PPC_CNTLZL "%0,%1" : "=r" (lz) : "r" (x)); - return BITS_PER_LONG - 1 - lz; -} - -static inline __attribute__((const)) -int __ilog2_u32(u32 n) -{ - int bit; - asm ("cntlzw %0,%1" : "=r" (bit) : "r" (n)); - return 31 - bit; -} - -#ifdef __powerpc64__ -static inline __attribute__((const)) -int __ilog2_u64(u64 n) -{ - int bit; - asm ("cntlzd %0,%1" : "=r" (bit) : "r" (n)); - return 63 - bit; -} -#endif +#define __ilog2(x) ilog2(x) #include <asm-generic/bitops/ffz.h> |