From: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.z...@gmail.com> --- arch/x86/include/asm/bitops.h | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h index 7766d1c..d3210c0 100644 --- a/arch/x86/include/asm/bitops.h +++ b/arch/x86/include/asm/bitops.h @@ -501,6 +501,18 @@ static __always_inline int fls64(__u64 x) #include <asm-generic/bitops/const_hweight.h> +#define __arch_parity32(x) (__arch_hweight32(x) & 1) +#define __arch_parity4(x) (__arch_parity32((x) & 0xf)) +#define __arch_parity8(x) (__arch_parity32((x) & 0xff)) +#define __arch_parity16(x) (__arch_parity32((x) & 0xffff)) +#ifdef CONFIG_X86_32 +#define __arch_parity64(x) (__arch_parity32((unsigned int)((x) >> 32) ^ (unsigned int)(x))) +#else +#define __arch_parity64(x) (__arch_hweight64(x) & 1) +#endif + +#include <asm-generic/bitops/const_parity.h> + #include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic-setbit.h> -- 2.5.5
