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Date: Sun, 27 Mar 2016 14:43:10 +0800 From: "zhaoxiu.zeng" <zhaoxiu.zeng@...il.com> To: "David S. Miller" <davem@...emloft.net> Cc: linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org Subject: [PATCH 10/31] Add sparc-specific parity functions From: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com> Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@...il.com> --- arch/sparc/include/asm/bitops_32.h | 1 + arch/sparc/include/asm/bitops_64.h | 13 +++++++++++++ 2 files changed, 14 insertions(+) diff --git a/arch/sparc/include/asm/bitops_32.h b/arch/sparc/include/asm/bitops_32.h index 600ed1d..8c41896 100644 --- a/arch/sparc/include/asm/bitops_32.h +++ b/arch/sparc/include/asm/bitops_32.h @@ -98,6 +98,7 @@ static inline void change_bit(unsigned long nr, volatile unsigned long *addr) #include <asm-generic/bitops/__fls.h> #include <asm-generic/bitops/fls64.h> #include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/parity.h> #include <asm-generic/bitops/lock.h> #include <asm-generic/bitops/find.h> #include <asm-generic/bitops/le.h> diff --git a/arch/sparc/include/asm/bitops_64.h b/arch/sparc/include/asm/bitops_64.h index 2d52240..4d3dcb3 100644 --- a/arch/sparc/include/asm/bitops_64.h +++ b/arch/sparc/include/asm/bitops_64.h @@ -47,6 +47,19 @@ unsigned int __arch_hweight16(unsigned int w); unsigned int __arch_hweight8(unsigned int w); #include <asm-generic/bitops/const_hweight.h> + +/* + * parityN: returns the parity of a N-bit word, + * i.e. the number of 1-bits in x modulo 2. + */ + +#define __arch_parity4(w) (__arch_hweight8((w) & 0xf) & 1) +#define __arch_parity8(w) (__arch_hweight8(w) & 1) +#define __arch_parity16(w) (__arch_hweight16(w) & 1) +#define __arch_parity32(w) (__arch_hweight32(w) & 1) +#define __arch_parity64(w) ((unsigned int)__arch_hweight64(w) & 1) + +#include <asm-generic/bitops/const_hweight.h> #include <asm-generic/bitops/lock.h> #endif /* __KERNEL__ */ -- 2.5.5
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