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Merge branch 'locking/arch-atomic' into locking/core, because the topic is ready
[deliverable/linux.git] / include / asm-generic / atomic-long.h
CommitLineData
72099ed2
AB		 1#ifndef _ASM_GENERIC_ATOMIC_LONG_H
2#define _ASM_GENERIC_ATOMIC_LONG_H
d3cb4871
CL		 3/*
4 * Copyright (C) 2005 Silicon Graphics, Inc.
cde53535 5 * Christoph Lameter
d3cb4871
CL		 6 *
7 * Allows to provide arch independent atomic definitions without the need to
8 * edit all arch specific atomic.h files.
9 */
10
5998bf1d 11#include <asm/types.h>
d3cb4871
CL		 12
13/*
14 * Suppport for atomic_long_t
15 *
16 * Casts for parameters are avoided for existing atomic functions in order to
17 * avoid issues with cast-as-lval under gcc 4.x and other limitations that the
18 * macros of a platform may have.
19 */
20
21#if BITS_PER_LONG == 64
22
23typedef atomic64_t atomic_long_t;
24
25#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
586b610e 26#define ATOMIC_LONG_PFX(x) atomic64 ## x
d3cb4871 27
586b610e 28#else
d3cb4871
CL		 29
30typedef atomic_t atomic_long_t;
31
32#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
586b610e
WD		 33#define ATOMIC_LONG_PFX(x) atomic ## x
34
35#endif
36
6d79ef2d 37#define ATOMIC_LONG_READ_OP(mo) \
e3e72ab8 38static inline long atomic_long_read##mo(const atomic_long_t *l) \
6d79ef2d
WD		 39{ \
40 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
41 \
42 return (long)ATOMIC_LONG_PFX(_read##mo)(v); \
d3cb4871 43}
6d79ef2d
WD		 44ATOMIC_LONG_READ_OP()
45ATOMIC_LONG_READ_OP(_acquire)
d3cb4871 46
6d79ef2d 47#undef ATOMIC_LONG_READ_OP
d3cb4871 48
6d79ef2d
WD		 49#define ATOMIC_LONG_SET_OP(mo) \
50static inline void atomic_long_set##mo(atomic_long_t *l, long i) \
51{ \
52 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
53 \
54 ATOMIC_LONG_PFX(_set##mo)(v, i); \
55}
56ATOMIC_LONG_SET_OP()
57ATOMIC_LONG_SET_OP(_release)
58
59#undef ATOMIC_LONG_SET_OP
60
61#define ATOMIC_LONG_ADD_SUB_OP(op, mo) \
62static inline long \
63atomic_long_##op##_return##mo(long i, atomic_long_t *l) \
64{ \
65 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
66 \
67 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \
d3cb4871 68}
6d79ef2d
WD		 69ATOMIC_LONG_ADD_SUB_OP(add,)
70ATOMIC_LONG_ADD_SUB_OP(add, _relaxed)
71ATOMIC_LONG_ADD_SUB_OP(add, _acquire)
72ATOMIC_LONG_ADD_SUB_OP(add, _release)
73ATOMIC_LONG_ADD_SUB_OP(sub,)
74ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed)
75ATOMIC_LONG_ADD_SUB_OP(sub, _acquire)
76ATOMIC_LONG_ADD_SUB_OP(sub, _release)
77
78#undef ATOMIC_LONG_ADD_SUB_OP
79
80#define atomic_long_cmpxchg_relaxed(l, old, new) \
81 (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \
82 (old), (new)))
83#define atomic_long_cmpxchg_acquire(l, old, new) \
84 (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \
85 (old), (new)))
86#define atomic_long_cmpxchg_release(l, old, new) \
87 (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \
88 (old), (new)))
89#define atomic_long_cmpxchg(l, old, new) \
90 (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new)))
91
92#define atomic_long_xchg_relaxed(v, new) \
93 (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
94#define atomic_long_xchg_acquire(v, new) \
95 (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
96#define atomic_long_xchg_release(v, new) \
97 (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
98#define atomic_long_xchg(v, new) \
99 (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new)))
d3cb4871 100
a644fdf0 101static __always_inline void atomic_long_inc(atomic_long_t *l)
d3cb4871 102{
586b610e 103 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
d3cb4871 104
586b610e 105 ATOMIC_LONG_PFX(_inc)(v);
d3cb4871
CL		 106}
107
a644fdf0 108static __always_inline void atomic_long_dec(atomic_long_t *l)
d3cb4871 109{
586b610e 110 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
d3cb4871 111
586b610e 112 ATOMIC_LONG_PFX(_dec)(v);
d3cb4871
CL		 113}
114
28aa2bda
PZ		 115#define ATOMIC_LONG_FETCH_OP(op, mo) \
116static inline long \
117atomic_long_fetch_##op##mo(long i, atomic_long_t *l) \
118{ \
119 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
120 \
121 return (long)ATOMIC_LONG_PFX(_fetch_##op##mo)(i, v); \
122}
123
124ATOMIC_LONG_FETCH_OP(add, )
125ATOMIC_LONG_FETCH_OP(add, _relaxed)
126ATOMIC_LONG_FETCH_OP(add, _acquire)
127ATOMIC_LONG_FETCH_OP(add, _release)
128ATOMIC_LONG_FETCH_OP(sub, )
129ATOMIC_LONG_FETCH_OP(sub, _relaxed)
130ATOMIC_LONG_FETCH_OP(sub, _acquire)
131ATOMIC_LONG_FETCH_OP(sub, _release)
132ATOMIC_LONG_FETCH_OP(and, )
133ATOMIC_LONG_FETCH_OP(and, _relaxed)
134ATOMIC_LONG_FETCH_OP(and, _acquire)
135ATOMIC_LONG_FETCH_OP(and, _release)
136ATOMIC_LONG_FETCH_OP(andnot, )
137ATOMIC_LONG_FETCH_OP(andnot, _relaxed)
138ATOMIC_LONG_FETCH_OP(andnot, _acquire)
139ATOMIC_LONG_FETCH_OP(andnot, _release)
140ATOMIC_LONG_FETCH_OP(or, )
141ATOMIC_LONG_FETCH_OP(or, _relaxed)
142ATOMIC_LONG_FETCH_OP(or, _acquire)
143ATOMIC_LONG_FETCH_OP(or, _release)
144ATOMIC_LONG_FETCH_OP(xor, )
145ATOMIC_LONG_FETCH_OP(xor, _relaxed)
146ATOMIC_LONG_FETCH_OP(xor, _acquire)
147ATOMIC_LONG_FETCH_OP(xor, _release)
148
90fe6514 149#define ATOMIC_LONG_OP(op) \
a644fdf0 150static __always_inline void \
90fe6514
PZ		 151atomic_long_##op(long i, atomic_long_t *l) \
152{ \
153 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
154 \
155 ATOMIC_LONG_PFX(_##op)(i, v); \
d3cb4871
CL		 156}
157
90fe6514
PZ		 158ATOMIC_LONG_OP(add)
159ATOMIC_LONG_OP(sub)
160ATOMIC_LONG_OP(and)
28aa2bda 161ATOMIC_LONG_OP(andnot)
90fe6514
PZ		 162ATOMIC_LONG_OP(or)
163ATOMIC_LONG_OP(xor)
d3cb4871 164
90fe6514 165#undef ATOMIC_LONG_OP
d3cb4871 166
bb2382c3
MD		 167static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
168{
586b610e 169 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
bb2382c3 170
586b610e 171 return ATOMIC_LONG_PFX(_sub_and_test)(i, v);
bb2382c3
MD		 172}
173
174static inline int atomic_long_dec_and_test(atomic_long_t *l)
175{
586b610e 176 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
bb2382c3 177
586b610e 178 return ATOMIC_LONG_PFX(_dec_and_test)(v);
bb2382c3
MD		 179}
180
181static inline int atomic_long_inc_and_test(atomic_long_t *l)
182{
586b610e 183 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
bb2382c3 184
586b610e 185 return ATOMIC_LONG_PFX(_inc_and_test)(v);
bb2382c3
MD		 186}
187
188static inline int atomic_long_add_negative(long i, atomic_long_t *l)
189{
586b610e 190 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
bb2382c3 191
586b610e 192 return ATOMIC_LONG_PFX(_add_negative)(i, v);
bb2382c3
MD		 193}
194
63ab7bd0
DB		 195#define ATOMIC_LONG_INC_DEC_OP(op, mo) \
196static inline long \
197atomic_long_##op##_return##mo(atomic_long_t *l) \
198{ \
199 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \
200 \
201 return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(v); \
bb2382c3 202}
63ab7bd0
DB		 203ATOMIC_LONG_INC_DEC_OP(inc,)
204ATOMIC_LONG_INC_DEC_OP(inc, _relaxed)
205ATOMIC_LONG_INC_DEC_OP(inc, _acquire)
206ATOMIC_LONG_INC_DEC_OP(inc, _release)
207ATOMIC_LONG_INC_DEC_OP(dec,)
208ATOMIC_LONG_INC_DEC_OP(dec, _relaxed)
209ATOMIC_LONG_INC_DEC_OP(dec, _acquire)
210ATOMIC_LONG_INC_DEC_OP(dec, _release)
211
212#undef ATOMIC_LONG_INC_DEC_OP
bb2382c3 213
2856f5e3
MD		 214static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
215{
586b610e 216 ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l;
2856f5e3 217
586b610e 218 return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u);
2856f5e3 219}
bb2382c3 220
586b610e
WD		 221#define atomic_long_inc_not_zero(l) \
222 ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l))
4b358e22 223
72099ed2 224#endif /* _ASM_GENERIC_ATOMIC_LONG_H */
Linux kernel - Deliverables
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