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| 1 | /* Atomic operations usable in machine independent code */ |
1 | /* Atomic operations usable in machine independent code */ |
| 2 | #ifndef _LINUX_ATOMIC_H |
2 | #ifndef _LINUX_ATOMIC_H |
| 3 | #define _LINUX_ATOMIC_H |
3 | #define _LINUX_ATOMIC_H |
| 4 | #include |
4 | #include |
| - | 5 | #include |
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| - | 6 | ||
| - | 7 | /* |
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| - | 8 | * Relaxed variants of xchg, cmpxchg and some atomic operations. |
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| - | 9 | * |
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| - | 10 | * We support four variants: |
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| - | 11 | * |
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| - | 12 | * - Fully ordered: The default implementation, no suffix required. |
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| - | 13 | * - Acquire: Provides ACQUIRE semantics, _acquire suffix. |
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| - | 14 | * - Release: Provides RELEASE semantics, _release suffix. |
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| - | 15 | * - Relaxed: No ordering guarantees, _relaxed suffix. |
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| - | 16 | * |
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| - | 17 | * For compound atomics performing both a load and a store, ACQUIRE |
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| - | 18 | * semantics apply only to the load and RELEASE semantics only to the |
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| - | 19 | * store portion of the operation. Note that a failed cmpxchg_acquire |
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| - | 20 | * does -not- imply any memory ordering constraints. |
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| - | 21 | * |
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| - | 22 | * See Documentation/memory-barriers.txt for ACQUIRE/RELEASE definitions. |
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| - | 23 | */ |
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| - | 24 | ||
| - | 25 | #ifndef atomic_read_acquire |
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| - | 26 | #define atomic_read_acquire(v) smp_load_acquire(&(v)->counter) |
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| - | 27 | #endif |
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| - | 28 | ||
| - | 29 | #ifndef atomic_set_release |
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| - | 30 | #define atomic_set_release(v, i) smp_store_release(&(v)->counter, (i)) |
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| - | 31 | #endif |
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| - | 32 | ||
| - | 33 | /* |
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| - | 34 | * The idea here is to build acquire/release variants by adding explicit |
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| - | 35 | * barriers on top of the relaxed variant. In the case where the relaxed |
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| - | 36 | * variant is already fully ordered, no additional barriers are needed. |
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| - | 37 | */ |
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| - | 38 | #define __atomic_op_acquire(op, args...) \ |
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| - | 39 | ({ \ |
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| - | 40 | typeof(op##_relaxed(args)) __ret = op##_relaxed(args); \ |
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| - | 41 | smp_mb__after_atomic(); \ |
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| - | 42 | __ret; \ |
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| - | 43 | }) |
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| - | 44 | ||
| - | 45 | #define __atomic_op_release(op, args...) \ |
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| - | 46 | ({ \ |
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| - | 47 | smp_mb__before_atomic(); \ |
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| - | 48 | op##_relaxed(args); \ |
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| - | 49 | }) |
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| - | 50 | ||
| - | 51 | #define __atomic_op_fence(op, args...) \ |
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| - | 52 | ({ \ |
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| - | 53 | typeof(op##_relaxed(args)) __ret; \ |
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| - | 54 | smp_mb__before_atomic(); \ |
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| - | 55 | __ret = op##_relaxed(args); \ |
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| - | 56 | smp_mb__after_atomic(); \ |
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| - | 57 | __ret; \ |
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| - | 58 | }) |
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| - | 59 | ||
| - | 60 | /* atomic_add_return_relaxed */ |
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| - | 61 | #ifndef atomic_add_return_relaxed |
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| - | 62 | #define atomic_add_return_relaxed atomic_add_return |
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| - | 63 | #define atomic_add_return_acquire atomic_add_return |
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| - | 64 | #define atomic_add_return_release atomic_add_return |
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| - | 65 | ||
| - | 66 | #else /* atomic_add_return_relaxed */ |
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| - | 67 | ||
| - | 68 | #ifndef atomic_add_return_acquire |
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| - | 69 | #define atomic_add_return_acquire(...) \ |
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| - | 70 | __atomic_op_acquire(atomic_add_return, __VA_ARGS__) |
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| - | 71 | #endif |
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| - | 72 | ||
| - | 73 | #ifndef atomic_add_return_release |
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| - | 74 | #define atomic_add_return_release(...) \ |
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| - | 75 | __atomic_op_release(atomic_add_return, __VA_ARGS__) |
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| - | 76 | #endif |
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| - | 77 | ||
| - | 78 | #ifndef atomic_add_return |
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| - | 79 | #define atomic_add_return(...) \ |
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| - | 80 | __atomic_op_fence(atomic_add_return, __VA_ARGS__) |
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| - | 81 | #endif |
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| - | 82 | #endif /* atomic_add_return_relaxed */ |
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| - | 83 | ||
| - | 84 | /* atomic_inc_return_relaxed */ |
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| - | 85 | #ifndef atomic_inc_return_relaxed |
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| - | 86 | #define atomic_inc_return_relaxed atomic_inc_return |
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| - | 87 | #define atomic_inc_return_acquire atomic_inc_return |
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| - | 88 | #define atomic_inc_return_release atomic_inc_return |
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| - | 89 | ||
| - | 90 | #else /* atomic_inc_return_relaxed */ |
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| - | 91 | ||
| - | 92 | #ifndef atomic_inc_return_acquire |
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| - | 93 | #define atomic_inc_return_acquire(...) \ |
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| - | 94 | __atomic_op_acquire(atomic_inc_return, __VA_ARGS__) |
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| - | 95 | #endif |
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| - | 96 | ||
| - | 97 | #ifndef atomic_inc_return_release |
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| - | 98 | #define atomic_inc_return_release(...) \ |
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| - | 99 | __atomic_op_release(atomic_inc_return, __VA_ARGS__) |
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| - | 100 | #endif |
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| - | 101 | ||
| - | 102 | #ifndef atomic_inc_return |
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| - | 103 | #define atomic_inc_return(...) \ |
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| - | 104 | __atomic_op_fence(atomic_inc_return, __VA_ARGS__) |
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| - | 105 | #endif |
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| - | 106 | #endif /* atomic_inc_return_relaxed */ |
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| - | 107 | ||
| - | 108 | /* atomic_sub_return_relaxed */ |
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| - | 109 | #ifndef atomic_sub_return_relaxed |
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| - | 110 | #define atomic_sub_return_relaxed atomic_sub_return |
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| - | 111 | #define atomic_sub_return_acquire atomic_sub_return |
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| - | 112 | #define atomic_sub_return_release atomic_sub_return |
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| - | 113 | ||
| - | 114 | #else /* atomic_sub_return_relaxed */ |
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| - | 115 | ||
| - | 116 | #ifndef atomic_sub_return_acquire |
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| - | 117 | #define atomic_sub_return_acquire(...) \ |
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| - | 118 | __atomic_op_acquire(atomic_sub_return, __VA_ARGS__) |
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| - | 119 | #endif |
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| - | 120 | ||
| - | 121 | #ifndef atomic_sub_return_release |
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| - | 122 | #define atomic_sub_return_release(...) \ |
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| - | 123 | __atomic_op_release(atomic_sub_return, __VA_ARGS__) |
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| - | 124 | #endif |
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| - | 125 | ||
| - | 126 | #ifndef atomic_sub_return |
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| - | 127 | #define atomic_sub_return(...) \ |
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| - | 128 | __atomic_op_fence(atomic_sub_return, __VA_ARGS__) |
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| - | 129 | #endif |
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| - | 130 | #endif /* atomic_sub_return_relaxed */ |
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| - | 131 | ||
| - | 132 | /* atomic_dec_return_relaxed */ |
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| - | 133 | #ifndef atomic_dec_return_relaxed |
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| - | 134 | #define atomic_dec_return_relaxed atomic_dec_return |
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| - | 135 | #define atomic_dec_return_acquire atomic_dec_return |
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| - | 136 | #define atomic_dec_return_release atomic_dec_return |
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| - | 137 | ||
| - | 138 | #else /* atomic_dec_return_relaxed */ |
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| - | 139 | ||
| - | 140 | #ifndef atomic_dec_return_acquire |
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| - | 141 | #define atomic_dec_return_acquire(...) \ |
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| - | 142 | __atomic_op_acquire(atomic_dec_return, __VA_ARGS__) |
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| - | 143 | #endif |
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| - | 144 | ||
| - | 145 | #ifndef atomic_dec_return_release |
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| - | 146 | #define atomic_dec_return_release(...) \ |
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| - | 147 | __atomic_op_release(atomic_dec_return, __VA_ARGS__) |
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| - | 148 | #endif |
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| - | 149 | ||
| - | 150 | #ifndef atomic_dec_return |
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| - | 151 | #define atomic_dec_return(...) \ |
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| - | 152 | __atomic_op_fence(atomic_dec_return, __VA_ARGS__) |
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| - | 153 | #endif |
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| - | 154 | #endif /* atomic_dec_return_relaxed */ |
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| - | 155 | ||
| - | 156 | /* atomic_xchg_relaxed */ |
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| - | 157 | #ifndef atomic_xchg_relaxed |
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| - | 158 | #define atomic_xchg_relaxed atomic_xchg |
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| - | 159 | #define atomic_xchg_acquire atomic_xchg |
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| - | 160 | #define atomic_xchg_release atomic_xchg |
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| - | 161 | ||
| - | 162 | #else /* atomic_xchg_relaxed */ |
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| - | 163 | ||
| - | 164 | #ifndef atomic_xchg_acquire |
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| - | 165 | #define atomic_xchg_acquire(...) \ |
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| - | 166 | __atomic_op_acquire(atomic_xchg, __VA_ARGS__) |
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| - | 167 | #endif |
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| - | 168 | ||
| - | 169 | #ifndef atomic_xchg_release |
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| - | 170 | #define atomic_xchg_release(...) \ |
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| - | 171 | __atomic_op_release(atomic_xchg, __VA_ARGS__) |
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| - | 172 | #endif |
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| - | 173 | ||
| - | 174 | #ifndef atomic_xchg |
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| - | 175 | #define atomic_xchg(...) \ |
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| - | 176 | __atomic_op_fence(atomic_xchg, __VA_ARGS__) |
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| - | 177 | #endif |
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| - | 178 | #endif /* atomic_xchg_relaxed */ |
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| - | 179 | ||
| - | 180 | /* atomic_cmpxchg_relaxed */ |
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| - | 181 | #ifndef atomic_cmpxchg_relaxed |
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| - | 182 | #define atomic_cmpxchg_relaxed atomic_cmpxchg |
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| - | 183 | #define atomic_cmpxchg_acquire atomic_cmpxchg |
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| - | 184 | #define atomic_cmpxchg_release atomic_cmpxchg |
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| - | 185 | ||
| - | 186 | #else /* atomic_cmpxchg_relaxed */ |
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| - | 187 | ||
| - | 188 | #ifndef atomic_cmpxchg_acquire |
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| - | 189 | #define atomic_cmpxchg_acquire(...) \ |
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| - | 190 | __atomic_op_acquire(atomic_cmpxchg, __VA_ARGS__) |
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| - | 191 | #endif |
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| - | 192 | ||
| - | 193 | #ifndef atomic_cmpxchg_release |
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| - | 194 | #define atomic_cmpxchg_release(...) \ |
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| - | 195 | __atomic_op_release(atomic_cmpxchg, __VA_ARGS__) |
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| - | 196 | #endif |
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| - | 197 | ||
| - | 198 | #ifndef atomic_cmpxchg |
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| - | 199 | #define atomic_cmpxchg(...) \ |
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| - | 200 | __atomic_op_fence(atomic_cmpxchg, __VA_ARGS__) |
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| - | 201 | #endif |
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| - | 202 | #endif /* atomic_cmpxchg_relaxed */ |
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| - | 203 | ||
| - | 204 | #ifndef atomic64_read_acquire |
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| - | 205 | #define atomic64_read_acquire(v) smp_load_acquire(&(v)->counter) |
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| - | 206 | #endif |
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| - | 207 | ||
| - | 208 | #ifndef atomic64_set_release |
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| - | 209 | #define atomic64_set_release(v, i) smp_store_release(&(v)->counter, (i)) |
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| - | 210 | #endif |
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| - | 211 | ||
| - | 212 | /* atomic64_add_return_relaxed */ |
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| - | 213 | #ifndef atomic64_add_return_relaxed |
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| - | 214 | #define atomic64_add_return_relaxed atomic64_add_return |
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| - | 215 | #define atomic64_add_return_acquire atomic64_add_return |
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| - | 216 | #define atomic64_add_return_release atomic64_add_return |
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| - | 217 | ||
| - | 218 | #else /* atomic64_add_return_relaxed */ |
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| - | 219 | ||
| - | 220 | #ifndef atomic64_add_return_acquire |
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| - | 221 | #define atomic64_add_return_acquire(...) \ |
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| - | 222 | __atomic_op_acquire(atomic64_add_return, __VA_ARGS__) |
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| - | 223 | #endif |
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| - | 224 | ||
| - | 225 | #ifndef atomic64_add_return_release |
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| - | 226 | #define atomic64_add_return_release(...) \ |
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| - | 227 | __atomic_op_release(atomic64_add_return, __VA_ARGS__) |
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| - | 228 | #endif |
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| - | 229 | ||
| - | 230 | #ifndef atomic64_add_return |
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| - | 231 | #define atomic64_add_return(...) \ |
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| - | 232 | __atomic_op_fence(atomic64_add_return, __VA_ARGS__) |
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| - | 233 | #endif |
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| - | 234 | #endif /* atomic64_add_return_relaxed */ |
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| - | 235 | ||
| - | 236 | /* atomic64_inc_return_relaxed */ |
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| - | 237 | #ifndef atomic64_inc_return_relaxed |
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| - | 238 | #define atomic64_inc_return_relaxed atomic64_inc_return |
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| - | 239 | #define atomic64_inc_return_acquire atomic64_inc_return |
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| - | 240 | #define atomic64_inc_return_release atomic64_inc_return |
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| - | 241 | ||
| - | 242 | #else /* atomic64_inc_return_relaxed */ |
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| - | 243 | ||
| - | 244 | #ifndef atomic64_inc_return_acquire |
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| - | 245 | #define atomic64_inc_return_acquire(...) \ |
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| - | 246 | __atomic_op_acquire(atomic64_inc_return, __VA_ARGS__) |
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| - | 247 | #endif |
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| - | 248 | ||
| - | 249 | #ifndef atomic64_inc_return_release |
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| - | 250 | #define atomic64_inc_return_release(...) \ |
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| - | 251 | __atomic_op_release(atomic64_inc_return, __VA_ARGS__) |
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| - | 252 | #endif |
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| - | 253 | ||
| - | 254 | #ifndef atomic64_inc_return |
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| - | 255 | #define atomic64_inc_return(...) \ |
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| - | 256 | __atomic_op_fence(atomic64_inc_return, __VA_ARGS__) |
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| - | 257 | #endif |
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| - | 258 | #endif /* atomic64_inc_return_relaxed */ |
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| - | 259 | ||
| - | 260 | ||
| - | 261 | /* atomic64_sub_return_relaxed */ |
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| - | 262 | #ifndef atomic64_sub_return_relaxed |
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| - | 263 | #define atomic64_sub_return_relaxed atomic64_sub_return |
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| - | 264 | #define atomic64_sub_return_acquire atomic64_sub_return |
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| - | 265 | #define atomic64_sub_return_release atomic64_sub_return |
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| - | 266 | ||
| - | 267 | #else /* atomic64_sub_return_relaxed */ |
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| - | 268 | ||
| - | 269 | #ifndef atomic64_sub_return_acquire |
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| - | 270 | #define atomic64_sub_return_acquire(...) \ |
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| - | 271 | __atomic_op_acquire(atomic64_sub_return, __VA_ARGS__) |
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| - | 272 | #endif |
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| - | 273 | ||
| - | 274 | #ifndef atomic64_sub_return_release |
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| - | 275 | #define atomic64_sub_return_release(...) \ |
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| - | 276 | __atomic_op_release(atomic64_sub_return, __VA_ARGS__) |
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| - | 277 | #endif |
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| - | 278 | ||
| - | 279 | #ifndef atomic64_sub_return |
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| - | 280 | #define atomic64_sub_return(...) \ |
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| - | 281 | __atomic_op_fence(atomic64_sub_return, __VA_ARGS__) |
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| - | 282 | #endif |
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| - | 283 | #endif /* atomic64_sub_return_relaxed */ |
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| - | 284 | ||
| - | 285 | /* atomic64_dec_return_relaxed */ |
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| - | 286 | #ifndef atomic64_dec_return_relaxed |
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| - | 287 | #define atomic64_dec_return_relaxed atomic64_dec_return |
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| - | 288 | #define atomic64_dec_return_acquire atomic64_dec_return |
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| - | 289 | #define atomic64_dec_return_release atomic64_dec_return |
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| - | 290 | ||
| - | 291 | #else /* atomic64_dec_return_relaxed */ |
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| - | 292 | ||
| - | 293 | #ifndef atomic64_dec_return_acquire |
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| - | 294 | #define atomic64_dec_return_acquire(...) \ |
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| - | 295 | __atomic_op_acquire(atomic64_dec_return, __VA_ARGS__) |
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| - | 296 | #endif |
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| - | 297 | ||
| - | 298 | #ifndef atomic64_dec_return_release |
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| - | 299 | #define atomic64_dec_return_release(...) \ |
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| - | 300 | __atomic_op_release(atomic64_dec_return, __VA_ARGS__) |
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| - | 301 | #endif |
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| - | 302 | ||
| - | 303 | #ifndef atomic64_dec_return |
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| - | 304 | #define atomic64_dec_return(...) \ |
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| - | 305 | __atomic_op_fence(atomic64_dec_return, __VA_ARGS__) |
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| - | 306 | #endif |
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| - | 307 | #endif /* atomic64_dec_return_relaxed */ |
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| - | 308 | ||
| - | 309 | /* atomic64_xchg_relaxed */ |
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| - | 310 | #ifndef atomic64_xchg_relaxed |
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| - | 311 | #define atomic64_xchg_relaxed atomic64_xchg |
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| - | 312 | #define atomic64_xchg_acquire atomic64_xchg |
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| - | 313 | #define atomic64_xchg_release atomic64_xchg |
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| - | 314 | ||
| - | 315 | #else /* atomic64_xchg_relaxed */ |
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| - | 316 | ||
| - | 317 | #ifndef atomic64_xchg_acquire |
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| - | 318 | #define atomic64_xchg_acquire(...) \ |
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| - | 319 | __atomic_op_acquire(atomic64_xchg, __VA_ARGS__) |
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| - | 320 | #endif |
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| - | 321 | ||
| - | 322 | #ifndef atomic64_xchg_release |
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| - | 323 | #define atomic64_xchg_release(...) \ |
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| - | 324 | __atomic_op_release(atomic64_xchg, __VA_ARGS__) |
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| - | 325 | #endif |
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| - | 326 | ||
| - | 327 | #ifndef atomic64_xchg |
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| - | 328 | #define atomic64_xchg(...) \ |
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| - | 329 | __atomic_op_fence(atomic64_xchg, __VA_ARGS__) |
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| - | 330 | #endif |
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| - | 331 | #endif /* atomic64_xchg_relaxed */ |
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| - | 332 | ||
| - | 333 | /* atomic64_cmpxchg_relaxed */ |
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| - | 334 | #ifndef atomic64_cmpxchg_relaxed |
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| - | 335 | #define atomic64_cmpxchg_relaxed atomic64_cmpxchg |
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| - | 336 | #define atomic64_cmpxchg_acquire atomic64_cmpxchg |
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| - | 337 | #define atomic64_cmpxchg_release atomic64_cmpxchg |
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| - | 338 | ||
| - | 339 | #else /* atomic64_cmpxchg_relaxed */ |
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| - | 340 | ||
| - | 341 | #ifndef atomic64_cmpxchg_acquire |
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| - | 342 | #define atomic64_cmpxchg_acquire(...) \ |
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| - | 343 | __atomic_op_acquire(atomic64_cmpxchg, __VA_ARGS__) |
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| - | 344 | #endif |
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| - | 345 | ||
| - | 346 | #ifndef atomic64_cmpxchg_release |
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| - | 347 | #define atomic64_cmpxchg_release(...) \ |
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| - | 348 | __atomic_op_release(atomic64_cmpxchg, __VA_ARGS__) |
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| - | 349 | #endif |
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| - | 350 | ||
| - | 351 | #ifndef atomic64_cmpxchg |
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| - | 352 | #define atomic64_cmpxchg(...) \ |
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| - | 353 | __atomic_op_fence(atomic64_cmpxchg, __VA_ARGS__) |
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| - | 354 | #endif |
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| - | 355 | #endif /* atomic64_cmpxchg_relaxed */ |
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| - | 356 | ||
| - | 357 | /* cmpxchg_relaxed */ |
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| - | 358 | #ifndef cmpxchg_relaxed |
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| - | 359 | #define cmpxchg_relaxed cmpxchg |
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| - | 360 | #define cmpxchg_acquire cmpxchg |
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| - | 361 | #define cmpxchg_release cmpxchg |
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| - | 362 | ||
| - | 363 | #else /* cmpxchg_relaxed */ |
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| - | 364 | ||
| - | 365 | #ifndef cmpxchg_acquire |
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| - | 366 | #define cmpxchg_acquire(...) \ |
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| - | 367 | __atomic_op_acquire(cmpxchg, __VA_ARGS__) |
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| - | 368 | #endif |
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| - | 369 | ||
| - | 370 | #ifndef cmpxchg_release |
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| - | 371 | #define cmpxchg_release(...) \ |
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| - | 372 | __atomic_op_release(cmpxchg, __VA_ARGS__) |
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| - | 373 | #endif |
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| - | 374 | ||
| - | 375 | #ifndef cmpxchg |
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| - | 376 | #define cmpxchg(...) \ |
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| - | 377 | __atomic_op_fence(cmpxchg, __VA_ARGS__) |
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| - | 378 | #endif |
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| - | 379 | #endif /* cmpxchg_relaxed */ |
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| - | 380 | ||
| - | 381 | /* cmpxchg64_relaxed */ |
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| - | 382 | #ifndef cmpxchg64_relaxed |
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| - | 383 | #define cmpxchg64_relaxed cmpxchg64 |
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| - | 384 | #define cmpxchg64_acquire cmpxchg64 |
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| - | 385 | #define cmpxchg64_release cmpxchg64 |
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| - | 386 | ||
| - | 387 | #else /* cmpxchg64_relaxed */ |
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| - | 388 | ||
| - | 389 | #ifndef cmpxchg64_acquire |
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| - | 390 | #define cmpxchg64_acquire(...) \ |
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| - | 391 | __atomic_op_acquire(cmpxchg64, __VA_ARGS__) |
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| - | 392 | #endif |
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| - | 393 | ||
| - | 394 | #ifndef cmpxchg64_release |
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| - | 395 | #define cmpxchg64_release(...) \ |
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| - | 396 | __atomic_op_release(cmpxchg64, __VA_ARGS__) |
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| - | 397 | #endif |
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| - | 398 | ||
| - | 399 | #ifndef cmpxchg64 |
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| - | 400 | #define cmpxchg64(...) \ |
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| - | 401 | __atomic_op_fence(cmpxchg64, __VA_ARGS__) |
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| - | 402 | #endif |
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| - | 403 | #endif /* cmpxchg64_relaxed */ |
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| - | 404 | ||
| - | 405 | /* xchg_relaxed */ |
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| - | 406 | #ifndef xchg_relaxed |
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| - | 407 | #define xchg_relaxed xchg |
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| - | 408 | #define xchg_acquire xchg |
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| - | 409 | #define xchg_release xchg |
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| - | 410 | ||
| - | 411 | #else /* xchg_relaxed */ |
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| - | 412 | ||
| - | 413 | #ifndef xchg_acquire |
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| - | 414 | #define xchg_acquire(...) __atomic_op_acquire(xchg, __VA_ARGS__) |
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| - | 415 | #endif |
|
| - | 416 | ||
| - | 417 | #ifndef xchg_release |
|
| - | 418 | #define xchg_release(...) __atomic_op_release(xchg, __VA_ARGS__) |
|
| - | 419 | #endif |
|
| - | 420 | ||
| - | 421 | #ifndef xchg |
|
| - | 422 | #define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__) |
|
| - | 423 | #endif |
|
| - | 424 | #endif /* xchg_relaxed */ |
|
| Line 5... | Line 425... | ||
| 5 | 425 | ||
| 6 | /** |
426 | /** |
| 7 | * atomic_add_unless - add unless the number is already a given value |
427 | * atomic_add_unless - add unless the number is already a given value |
| 8 | * @v: pointer of type atomic_t |
428 | * @v: pointer of type atomic_t |
| Line 26... | Line 446... | ||
| 26 | */ |
446 | */ |
| 27 | #ifndef atomic_inc_not_zero |
447 | #ifndef atomic_inc_not_zero |
| 28 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) |
448 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) |
| 29 | #endif |
449 | #endif |
| Line -... | Line 450... | ||
| - | 450 | ||
| - | 451 | #ifndef atomic_andnot |
|
| - | 452 | static inline void atomic_andnot(int i, atomic_t *v) |
|
| - | 453 | { |
|
| - | 454 | atomic_and(~i, v); |
|
| - | 455 | } |
|
| - | 456 | #endif |
|
| - | 457 | ||
| - | 458 | static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v) |
|
| - | 459 | { |
|
| - | 460 | atomic_andnot(mask, v); |
|
| - | 461 | } |
|
| - | 462 | ||
| - | 463 | static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v) |
|
| - | 464 | { |
|
| - | 465 | atomic_or(mask, v); |
|
| - | 466 | } |
|
| 30 | 467 | ||
| 31 | /** |
468 | /** |
| 32 | * atomic_inc_not_zero_hint - increment if not null |
469 | * atomic_inc_not_zero_hint - increment if not null |
| 33 | * @v: pointer of type atomic_t |
470 | * @v: pointer of type atomic_t |
| 34 | * @hint: probable value of the atomic before the increment |
471 | * @hint: probable value of the atomic before the increment |
| Line 109... | Line 546... | ||
| 109 | } |
546 | } |
| 110 | return dec; |
547 | return dec; |
| 111 | } |
548 | } |
| 112 | #endif |
549 | #endif |
| Line 113... | Line 550... | ||
| 113 | 550 | ||
| 114 | #ifndef CONFIG_ARCH_HAS_ATOMIC_OR |
551 | #ifdef CONFIG_GENERIC_ATOMIC64 |
| 115 | static inline void atomic_or(int i, atomic_t *v) |
- | |
| 116 | { |
- | |
| 117 | int old; |
552 | #include |
| Line 118... | Line -... | ||
| 118 | int new; |
- | |
| 119 | 553 | #endif |
|
| 120 | do { |
554 | |
| - | 555 | #ifndef atomic64_andnot |
|
| 121 | old = atomic_read(v); |
556 | static inline void atomic64_andnot(long long i, atomic64_t *v) |
| 122 | new = old | i; |
557 | { |
| 123 | } while (atomic_cmpxchg(v, old, new) != old); |
558 | atomic64_and(~i, v); |
| Line 124... | Line 559... | ||
| 124 | } |
559 | } |
| 125 | #endif /* #ifndef CONFIG_ARCH_HAS_ATOMIC_OR */ |
- | |
| 126 | - | ||
| 127 | #include |
560 | #endif |
| 128 | #ifdef CONFIG_GENERIC_ATOMIC64 |
561 | |