1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
/* SPDX-License-Identifier: GPL-2.0+ OR Apache-2.0 */
#ifndef __EROFS_BITOPS_H
#define __EROFS_BITOPS_H
#ifdef __cplusplus
extern "C"
{
#endif
#include "defs.h"
static inline void __erofs_set_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p |= mask;
}
static inline void __erofs_clear_bit(int nr, volatile unsigned long *addr)
{
unsigned long mask = BIT_MASK(nr);
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
*p &= ~mask;
}
static inline int __erofs_test_bit(int nr, const volatile unsigned long *addr)
{
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
}
unsigned long erofs_find_next_bit(const unsigned long *addr,
unsigned long nbits, unsigned long start);
#ifdef __cplusplus
}
#endif
#endif
|
