Messages in this thread Patch in this message | | | From | Rasmus Villemoes <> | Subject | [PATCH 05/18] lib: bitmap: Remove unnecessary mask from bitmap_complement | Date | Fri, 4 Jul 2014 00:42:51 +0200 |
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Since the extra bits are "don't care", there is no reason to mask the last word to the used bits when complementing. This shaves off yet a few bytes.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> --- include/linux/bitmap.h | 2 +- lib/bitmap.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 21fb52f..f42d72d 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -225,7 +225,7 @@ static inline void bitmap_complement(unsigned long *dst, const unsigned long *sr unsigned int nbits) { if (small_const_nbits(nbits)) - *dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits); + *dst = ~(*src); else __bitmap_complement(dst, src, nbits); } diff --git a/lib/bitmap.c b/lib/bitmap.c index 0f2f845..4387e3c 100644 --- a/lib/bitmap.c +++ b/lib/bitmap.c @@ -93,7 +93,7 @@ void __bitmap_complement(unsigned long *dst, const unsigned long *src, unsigned dst[k] = ~src[k]; if (bits % BITS_PER_LONG) - dst[k] = ~src[k] & BITMAP_LAST_WORD_MASK(bits); + dst[k] = ~src[k]; } EXPORT_SYMBOL(__bitmap_complement); -- 1.9.2
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