Contributors: 18
Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
Arnaldo Carvalho de Melo |
113 |
30.71% |
6 |
25.00% |
Alexander Lobakin |
52 |
14.13% |
2 |
8.33% |
Alexander (Sasha) Levin |
35 |
9.51% |
1 |
4.17% |
Tiezhu Yang |
33 |
8.97% |
1 |
4.17% |
Robert Richter |
32 |
8.70% |
1 |
4.17% |
Kumar Kartikeya Dwivedi |
25 |
6.79% |
1 |
4.17% |
Frédéric Weisbecker |
22 |
5.98% |
1 |
4.17% |
David Ahern |
12 |
3.26% |
1 |
4.17% |
Irina Tirdea |
9 |
2.45% |
1 |
4.17% |
Tal Gilboa |
7 |
1.90% |
1 |
4.17% |
Sukadev Bhattiprolu |
6 |
1.63% |
1 |
4.17% |
Masami Hiramatsu |
6 |
1.63% |
1 |
4.17% |
Ingo Molnar |
5 |
1.36% |
1 |
4.17% |
Yury Norov |
4 |
1.09% |
1 |
4.17% |
Jiri Olsa |
4 |
1.09% |
1 |
4.17% |
Thorsten Blum |
1 |
0.27% |
1 |
4.17% |
Greg Kroah-Hartman |
1 |
0.27% |
1 |
4.17% |
Akinobu Mita |
1 |
0.27% |
1 |
4.17% |
Total |
368 |
|
24 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _TOOLS_LINUX_BITOPS_H_
#define _TOOLS_LINUX_BITOPS_H_
#include <asm/types.h>
#include <limits.h>
#ifndef __WORDSIZE
#define __WORDSIZE (__SIZEOF_LONG__ * 8)
#endif
#ifndef BITS_PER_LONG
# define BITS_PER_LONG __WORDSIZE
#endif
#include <linux/bits.h>
#include <linux/compiler.h>
#define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE)
#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(long))
#define BITS_TO_U64(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u64))
#define BITS_TO_U32(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(u32))
#define BITS_TO_BYTES(nr) DIV_ROUND_UP(nr, BITS_PER_TYPE(char))
#define BYTES_TO_BITS(nb) ((nb) * BITS_PER_BYTE)
extern unsigned int __sw_hweight8(unsigned int w);
extern unsigned int __sw_hweight16(unsigned int w);
extern unsigned int __sw_hweight32(unsigned int w);
extern unsigned long __sw_hweight64(__u64 w);
/*
* Defined here because those may be needed by architecture-specific static
* inlines.
*/
#define bitop(op, nr, addr) \
op(nr, addr)
#define __set_bit(nr, addr) bitop(___set_bit, nr, addr)
#define __clear_bit(nr, addr) bitop(___clear_bit, nr, addr)
#define __change_bit(nr, addr) bitop(___change_bit, nr, addr)
#define __test_and_set_bit(nr, addr) bitop(___test_and_set_bit, nr, addr)
#define __test_and_clear_bit(nr, addr) bitop(___test_and_clear_bit, nr, addr)
#define __test_and_change_bit(nr, addr) bitop(___test_and_change_bit, nr, addr)
#define test_bit(nr, addr) bitop(_test_bit, nr, addr)
/*
* Include this here because some architectures need generic_ffs/fls in
* scope
*
* XXX: this needs to be asm/bitops.h, when we get to per arch optimizations
*/
#include <asm-generic/bitops.h>
#define for_each_set_bit(bit, addr, size) \
for ((bit) = find_first_bit((addr), (size)); \
(bit) < (size); \
(bit) = find_next_bit((addr), (size), (bit) + 1))
#define for_each_clear_bit(bit, addr, size) \
for ((bit) = find_first_zero_bit((addr), (size)); \
(bit) < (size); \
(bit) = find_next_zero_bit((addr), (size), (bit) + 1))
/* same as for_each_set_bit() but use bit as value to start with */
#define for_each_set_bit_from(bit, addr, size) \
for ((bit) = find_next_bit((addr), (size), (bit)); \
(bit) < (size); \
(bit) = find_next_bit((addr), (size), (bit) + 1))
static inline unsigned long hweight_long(unsigned long w)
{
return sizeof(w) == 4 ? hweight32(w) : hweight64(w);
}
static inline unsigned int fls_long(unsigned long l)
{
if (sizeof(l) == 4)
return fls(l);
return fls64(l);
}
/**
* rol32 - rotate a 32-bit value left
* @word: value to rotate
* @shift: bits to roll
*/
static inline __u32 rol32(__u32 word, unsigned int shift)
{
return (word << shift) | (word >> ((-shift) & 31));
}
/**
* sign_extend64 - sign extend a 64-bit value using specified bit as sign-bit
* @value: value to sign extend
* @index: 0 based bit index (0<=index<64) to sign bit
*/
static __always_inline __s64 sign_extend64(__u64 value, int index)
{
__u8 shift = 63 - index;
return (__s64)(value << shift) >> shift;
}
#endif