From a1164a3ac75feeab86f6c02fabdfbf24b81e3c1a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 28 Aug 2015 09:27:15 +0200 Subject: move count_zeroes.h out of asm-generic This header contains a few helpers currenly only used by the mpi implementation, and not default implementation of architecture code. Signed-off-by: Christoph Hellwig Signed-off-by: Arnd Bergmann --- include/asm-generic/bitops/count_zeros.h | 57 -------------------------------- 1 file changed, 57 deletions(-) delete mode 100644 include/asm-generic/bitops/count_zeros.h (limited to 'include/asm-generic') diff --git a/include/asm-generic/bitops/count_zeros.h b/include/asm-generic/bitops/count_zeros.h deleted file mode 100644 index 97520d21fe62..000000000000 --- a/include/asm-generic/bitops/count_zeros.h +++ /dev/null @@ -1,57 +0,0 @@ -/* Count leading and trailing zeros functions - * - * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#ifndef _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_ -#define _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_ - -#include - -/** - * count_leading_zeros - Count the number of zeros from the MSB back - * @x: The value - * - * Count the number of leading zeros from the MSB going towards the LSB in @x. - * - * If the MSB of @x is set, the result is 0. - * If only the LSB of @x is set, then the result is BITS_PER_LONG-1. - * If @x is 0 then the result is COUNT_LEADING_ZEROS_0. - */ -static inline int count_leading_zeros(unsigned long x) -{ - if (sizeof(x) == 4) - return BITS_PER_LONG - fls(x); - else - return BITS_PER_LONG - fls64(x); -} - -#define COUNT_LEADING_ZEROS_0 BITS_PER_LONG - -/** - * count_trailing_zeros - Count the number of zeros from the LSB forwards - * @x: The value - * - * Count the number of trailing zeros from the LSB going towards the MSB in @x. - * - * If the LSB of @x is set, the result is 0. - * If only the MSB of @x is set, then the result is BITS_PER_LONG-1. - * If @x is 0 then the result is COUNT_TRAILING_ZEROS_0. - */ -static inline int count_trailing_zeros(unsigned long x) -{ -#define COUNT_TRAILING_ZEROS_0 (-1) - - if (sizeof(x) == 4) - return ffs(x); - else - return (x != 0) ? __ffs(x) : COUNT_TRAILING_ZEROS_0; -} - -#endif /* _ASM_GENERIC_BITOPS_COUNT_ZEROS_H_ */ -- cgit v1.2.3