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    Subject[PATCH 10/31] Add sparc-specific parity functions
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    Date
    From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>

    Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.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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