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authorChristoph Hellwig <hch@lst.de>2015-08-28 09:27:15 +0200
committerArnd Bergmann <arnd@arndb.de>2015-10-15 00:21:07 +0200
commita1164a3ac75feeab86f6c02fabdfbf24b81e3c1a (patch)
treef46d594ef454fbc85a1cbc177afa042424f81f67 /include/asm-generic/bitops
parent2f8e2c877784a0b23f02b41550170a24e14f5c95 (diff)
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 <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'include/asm-generic/bitops')
-rw-r--r--include/asm-generic/bitops/count_zeros.h57
1 files changed, 0 insertions, 57 deletions
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 <asm/bitops.h>
-
-/**
- * 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_ */