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Date: Thu, 19 Nov 2015 10:31:54 +0800 From: Jia He <hejianet@...il.com> To: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org Cc: Andrew Morton <akpm@...ux-foundation.org>, Rasmus Villemoes <linux@...musvillemoes.dk>, Denys Vlasenko <dvlasenk@...hat.com>, Kyungmin Park <kyungmin.park@...sung.com>, Michal Nazarewicz <mina86@...a86.com>, Yury Norov <yury.norov@...il.com>, Tejun Heo <tj@...nel.org>, Martin Kepplinger <martink@...teo.de>, George Spelvin <linux@...izon.com>, Ingo Molnar <mingo@...nel.org>, Arnd Bergmann <arnd@...db.de>, Jia He <hejianet@...il.com> Subject: [PATCH 3/3] linux/bitmap: Replace find_fisrt_{zero_}bit with the new lightweight api This is to replace find_fisrt_{zero_}bit with the new lightweight api all_bit_is_{one,zero} in bitmap_{full,empty} Signed-off-by: Jia He <hejianet@...il.com> --- include/asm-generic/bitops/find.h | 3 +++ include/linux/bitmap.h | 4 ++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/bitops/find.h b/include/asm-generic/bitops/find.h index 998d4d5..1ec1d45 100644 --- a/include/asm-generic/bitops/find.h +++ b/include/asm-generic/bitops/find.h @@ -59,4 +59,7 @@ extern unsigned long find_first_zero_bit(const unsigned long *addr, #endif /* CONFIG_GENERIC_FIND_FIRST_BIT */ +extern unsigned int all_bit_is_one(const unsigned long *addr, unsigned size); +extern unsigned int all_bit_is_zero(const unsigned long *addr, unsigned size); + #endif /*_ASM_GENERIC_BITOPS_FIND_H_ */ diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 15524f6..8877a68 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -281,7 +281,7 @@ static inline int bitmap_empty(const unsigned long *src, unsigned nbits) if (small_const_nbits(nbits)) return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); - return find_first_bit(src, nbits) == nbits; + return all_bit_is_zero(src, nbits); } static inline int bitmap_full(const unsigned long *src, unsigned int nbits) @@ -289,7 +289,7 @@ static inline int bitmap_full(const unsigned long *src, unsigned int nbits) if (small_const_nbits(nbits)) return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); - return find_first_zero_bit(src, nbits) == nbits; + return all_bit_is_one(src, nbits); } static __always_inline int bitmap_weight(const unsigned long *src, unsigned int nbits) -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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