Commit 789ce9dc authored Apr 30, 2014 by H. Peter Anvin Committed by Linus Torvalds May 01, 2014

word-at-a-time: simplify big-endian zero_bytemask macro



This is simpler and cleaner.  Depending on architecture, a smart
compiler may or may not generate the same code.

Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 98794f93

include/asm-generic/word-at-a-time.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -50,7 +50,7 @@ static inline bool has_zero(unsigned long val, unsigned long *data, const struct
		}

		#ifndef zero_bytemask
		#define zero_bytemask(mask) (~0ul << __fls(mask) << 1)
		#define zero_bytemask(mask) (~1ul << __fls(mask))
		#endif

		#endif /* _ASM_WORD_AT_A_TIME_H */