aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-generic/atomic-long.h
blob: beaea541adfb705c768966161dc311e7cb74b461 (plain)
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
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
#ifndef _ASM_GENERIC_ATOMIC_LONG_H
#define _ASM_GENERIC_ATOMIC_LONG_H
/*
 * Copyright (C) 2005 Silicon Graphics, Inc.
 *	Christoph Lameter
 *
 * Allows to provide arch independent atomic definitions without the need to
 * edit all arch specific atomic.h files.
 */

#include <asm/types.h>

/*
 * Suppport for atomic_long_t
 *
 * Casts for parameters are avoided for existing atomic functions in order to
 * avoid issues with cast-as-lval under gcc 4.x and other limitations that the
 * macros of a platform may have.
 */

#if BITS_PER_LONG == 64

typedef atomic64_t atomic_long_t;

#define ATOMIC_LONG_INIT(i)	ATOMIC64_INIT(i)
#define ATOMIC_LONG_PFX(x)	atomic64 ## x

#else

typedef atomic_t atomic_long_t;

#define ATOMIC_LONG_INIT(i)	ATOMIC_INIT(i)
#define ATOMIC_LONG_PFX(x)	atomic ## x

#endif

static inline long atomic_long_read(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_read)(v);
}

static inline void atomic_long_set(atomic_long_t *l, long i)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	ATOMIC_LONG_PFX(_set)(v, i);
}

static inline void atomic_long_inc(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	ATOMIC_LONG_PFX(_inc)(v);
}

static inline void atomic_long_dec(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	ATOMIC_LONG_PFX(_dec)(v);
}

static inline void atomic_long_add(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	ATOMIC_LONG_PFX(_add)(i, v);
}

static inline void atomic_long_sub(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	ATOMIC_LONG_PFX(_sub)(i, v);
}

static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return ATOMIC_LONG_PFX(_sub_and_test)(i, v);
}

static inline int atomic_long_dec_and_test(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return ATOMIC_LONG_PFX(_dec_and_test)(v);
}

static inline int atomic_long_inc_and_test(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return ATOMIC_LONG_PFX(_inc_and_test)(v);
}

static inline int atomic_long_add_negative(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return ATOMIC_LONG_PFX(_add_negative)(i, v);
}

static inline long atomic_long_add_return(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_add_return)(i, v);
}

static inline long atomic_long_sub_return(long i, atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_sub_return)(i, v);
}

static inline long atomic_long_inc_return(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_inc_return)(v);
}

static inline long atomic_long_dec_return(atomic_long_t *l)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_dec_return)(v);
}

static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
{
	ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;

	return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);
}

#define atomic_long_inc_not_zero(l) \
	ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
#define atomic_long_cmpxchg(l, old, new) \
	(ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
#define atomic_long_xchg(v, new) \
	(ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))

#endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */

Privacy Policy