[PATCH 03/31] Add alpha-specific parity functions
flat view
STALE3843d
From: zhaoxiu.zeng <hidden>
Date: 2016-03-27 05:44:01
Also in:
lkml
Subsystem:
alpha port, bitops api, the rest · Maintainers:
Richard Henderson, Matt Turner, Magnus Lindholm, Yury Norov, Linus Torvalds
From: Zeng Zhaoxiu <redacted> Signed-off-by: Zeng Zhaoxiu <redacted> --- arch/alpha/include/asm/bitops.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/arch/alpha/include/asm/bitops.h b/arch/alpha/include/asm/bitops.h
index 4bdfbd4..95a43fa 100644
--- a/arch/alpha/include/asm/bitops.h
+++ b/arch/alpha/include/asm/bitops.h@@ -421,11 +421,38 @@ static inline unsigned int __arch_hweight8(unsigned int w) { return __arch_hweight64(w & 0xff); } + +static inline unsigned int __arch_parity64(unsigned long w) +{ + return (unsigned int)__kernel_ctpop(w) & 1; +} + +static inline unsigned int __arch_parity32(unsigned int w) +{ + return __arch_parity64(w); +} + +static inline unsigned int __arch_parity16(unsigned int w) +{ + return __arch_parity64(w & 0xffff); +} + +static inline unsigned int __arch_parity8(unsigned int w) +{ + return __arch_parity64(w & 0xff); +} + +static inline unsigned int __arch_parity4(unsigned int w) +{ + return __arch_parity64(w & 0xf); +} #else #include <asm-generic/bitops/arch_hweight.h> +#include <asm-generic/bitops/arch_parity.h> #endif #include <asm-generic/bitops/const_hweight.h> +#include <asm-generic/bitops/const_parity.h> #endif /* __KERNEL__ */
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2.5.5