diff options
author | David S. Miller <davem@davemloft.net> | 2016-01-13 00:22:13 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2016-01-13 00:22:13 -0500 |
commit | 725da8dee445662beea77d3f42c3f4c79f7a7a0e (patch) | |
tree | be1e2bd103c69d7bbace3fffd97bc3d714bbc3d7 /tools/lib/util/find_next_bit.c | |
parent | ce78c76f33b9f43b92444869d1723f9e4260797a (diff) | |
parent | ddb5388ffd0ad75d07e7b78181a0b579824ba6f0 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'tools/lib/util/find_next_bit.c')
-rw-r--r-- | tools/lib/util/find_next_bit.c | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/tools/lib/util/find_next_bit.c b/tools/lib/util/find_next_bit.c deleted file mode 100644 index 41b44f65a79e..000000000000 --- a/tools/lib/util/find_next_bit.c +++ /dev/null @@ -1,89 +0,0 @@ -/* find_next_bit.c: fallback find next bit implementation - * - * Copied from lib/find_next_bit.c to tools/lib/next_bit.c - * - * Copyright (C) 2004 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 License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/bitops.h> -#include <asm/types.h> -#include <asm/byteorder.h> - -#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG) - -#ifndef find_next_bit -/* - * Find the next set bit in a memory region. - */ -unsigned long find_next_bit(const unsigned long *addr, unsigned long size, - unsigned long offset) -{ - const unsigned long *p = addr + BITOP_WORD(offset); - unsigned long result = offset & ~(BITS_PER_LONG-1); - unsigned long tmp; - - if (offset >= size) - return size; - size -= result; - offset %= BITS_PER_LONG; - if (offset) { - tmp = *(p++); - tmp &= (~0UL << offset); - if (size < BITS_PER_LONG) - goto found_first; - if (tmp) - goto found_middle; - size -= BITS_PER_LONG; - result += BITS_PER_LONG; - } - while (size & ~(BITS_PER_LONG-1)) { - if ((tmp = *(p++))) - goto found_middle; - result += BITS_PER_LONG; - size -= BITS_PER_LONG; - } - if (!size) - return result; - tmp = *p; - -found_first: - tmp &= (~0UL >> (BITS_PER_LONG - size)); - if (tmp == 0UL) /* Are any bits set? */ - return result + size; /* Nope. */ -found_middle: - return result + __ffs(tmp); -} -#endif - -#ifndef find_first_bit -/* - * Find the first set bit in a memory region. - */ -unsigned long find_first_bit(const unsigned long *addr, unsigned long size) -{ - const unsigned long *p = addr; - unsigned long result = 0; - unsigned long tmp; - - while (size & ~(BITS_PER_LONG-1)) { - if ((tmp = *(p++))) - goto found; - result += BITS_PER_LONG; - size -= BITS_PER_LONG; - } - if (!size) - return result; - - tmp = (*p) & (~0UL >> (BITS_PER_LONG - size)); - if (tmp == 0UL) /* Are any bits set? */ - return result + size; /* Nope. */ -found: - return result + __ffs(tmp); -} -#endif |