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| 1321 | serge | 1 | #ifndef _ASM_GENERIC_ATOMIC_LONG_H |
| 2 | #define _ASM_GENERIC_ATOMIC_LONG_H |
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| 3 | /* |
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| 4 | * Copyright (C) 2005 Silicon Graphics, Inc. |
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| 5 | * Christoph Lameter |
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| 6 | * |
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| 7 | * Allows to provide arch independent atomic definitions without the need to |
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| 8 | * edit all arch specific atomic.h files. |
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| 9 | */ |
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| 10 | |||
| 11 | #include |
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| 12 | |||
| 13 | /* |
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| 14 | * Suppport for atomic_long_t |
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| 15 | * |
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| 16 | * Casts for parameters are avoided for existing atomic functions in order to |
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| 17 | * avoid issues with cast-as-lval under gcc 4.x and other limitations that the |
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| 18 | * macros of a platform may have. |
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| 19 | */ |
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| 20 | |||
| 21 | #if BITS_PER_LONG == 64 |
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| 22 | |||
| 23 | typedef atomic64_t atomic_long_t; |
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| 24 | |||
| 25 | #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i) |
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| 26 | |||
| 27 | static inline long atomic_long_read(atomic_long_t *l) |
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| 28 | { |
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| 29 | atomic64_t *v = (atomic64_t *)l; |
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| 30 | |||
| 31 | return (long)atomic64_read(v); |
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| 32 | } |
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| 33 | |||
| 34 | static inline void atomic_long_set(atomic_long_t *l, long i) |
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| 35 | { |
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| 36 | atomic64_t *v = (atomic64_t *)l; |
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| 37 | |||
| 38 | atomic64_set(v, i); |
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| 39 | } |
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| 40 | |||
| 41 | static inline void atomic_long_inc(atomic_long_t *l) |
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| 42 | { |
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| 43 | atomic64_t *v = (atomic64_t *)l; |
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| 44 | |||
| 45 | atomic64_inc(v); |
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| 46 | } |
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| 47 | |||
| 48 | static inline void atomic_long_dec(atomic_long_t *l) |
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| 49 | { |
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| 50 | atomic64_t *v = (atomic64_t *)l; |
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| 51 | |||
| 52 | atomic64_dec(v); |
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| 53 | } |
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| 54 | |||
| 55 | static inline void atomic_long_add(long i, atomic_long_t *l) |
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| 56 | { |
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| 57 | atomic64_t *v = (atomic64_t *)l; |
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| 58 | |||
| 59 | atomic64_add(i, v); |
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| 60 | } |
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| 61 | |||
| 62 | static inline void atomic_long_sub(long i, atomic_long_t *l) |
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| 63 | { |
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| 64 | atomic64_t *v = (atomic64_t *)l; |
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| 65 | |||
| 66 | atomic64_sub(i, v); |
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| 67 | } |
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| 68 | |||
| 69 | static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) |
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| 70 | { |
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| 71 | atomic64_t *v = (atomic64_t *)l; |
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| 72 | |||
| 73 | return atomic64_sub_and_test(i, v); |
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| 74 | } |
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| 75 | |||
| 76 | static inline int atomic_long_dec_and_test(atomic_long_t *l) |
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| 77 | { |
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| 78 | atomic64_t *v = (atomic64_t *)l; |
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| 79 | |||
| 80 | return atomic64_dec_and_test(v); |
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| 81 | } |
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| 82 | |||
| 83 | static inline int atomic_long_inc_and_test(atomic_long_t *l) |
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| 84 | { |
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| 85 | atomic64_t *v = (atomic64_t *)l; |
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| 86 | |||
| 87 | return atomic64_inc_and_test(v); |
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| 88 | } |
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| 89 | |||
| 90 | static inline int atomic_long_add_negative(long i, atomic_long_t *l) |
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| 91 | { |
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| 92 | atomic64_t *v = (atomic64_t *)l; |
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| 93 | |||
| 94 | return atomic64_add_negative(i, v); |
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| 95 | } |
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| 96 | |||
| 97 | static inline long atomic_long_add_return(long i, atomic_long_t *l) |
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| 98 | { |
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| 99 | atomic64_t *v = (atomic64_t *)l; |
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| 100 | |||
| 101 | return (long)atomic64_add_return(i, v); |
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| 102 | } |
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| 103 | |||
| 104 | static inline long atomic_long_sub_return(long i, atomic_long_t *l) |
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| 105 | { |
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| 106 | atomic64_t *v = (atomic64_t *)l; |
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| 107 | |||
| 108 | return (long)atomic64_sub_return(i, v); |
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| 109 | } |
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| 110 | |||
| 111 | static inline long atomic_long_inc_return(atomic_long_t *l) |
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| 112 | { |
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| 113 | atomic64_t *v = (atomic64_t *)l; |
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| 114 | |||
| 115 | return (long)atomic64_inc_return(v); |
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| 116 | } |
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| 117 | |||
| 118 | static inline long atomic_long_dec_return(atomic_long_t *l) |
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| 119 | { |
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| 120 | atomic64_t *v = (atomic64_t *)l; |
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| 121 | |||
| 122 | return (long)atomic64_dec_return(v); |
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| 123 | } |
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| 124 | |||
| 125 | static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) |
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| 126 | { |
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| 127 | atomic64_t *v = (atomic64_t *)l; |
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| 128 | |||
| 129 | return (long)atomic64_add_unless(v, a, u); |
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| 130 | } |
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| 131 | |||
| 132 | #define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l)) |
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| 133 | |||
| 134 | #define atomic_long_cmpxchg(l, old, new) \ |
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| 135 | (atomic64_cmpxchg((atomic64_t *)(l), (old), (new))) |
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| 136 | #define atomic_long_xchg(v, new) \ |
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| 137 | (atomic64_xchg((atomic64_t *)(v), (new))) |
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| 138 | |||
| 139 | #else /* BITS_PER_LONG == 64 */ |
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| 140 | |||
| 141 | typedef atomic_t atomic_long_t; |
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| 142 | |||
| 143 | #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i) |
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| 144 | static inline long atomic_long_read(atomic_long_t *l) |
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| 145 | { |
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| 146 | atomic_t *v = (atomic_t *)l; |
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| 147 | |||
| 148 | return (long)atomic_read(v); |
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| 149 | } |
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| 150 | |||
| 151 | static inline void atomic_long_set(atomic_long_t *l, long i) |
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| 152 | { |
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| 153 | atomic_t *v = (atomic_t *)l; |
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| 154 | |||
| 155 | atomic_set(v, i); |
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| 156 | } |
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| 157 | |||
| 158 | static inline void atomic_long_inc(atomic_long_t *l) |
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| 159 | { |
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| 160 | atomic_t *v = (atomic_t *)l; |
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| 161 | |||
| 162 | atomic_inc(v); |
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| 163 | } |
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| 164 | |||
| 165 | static inline void atomic_long_dec(atomic_long_t *l) |
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| 166 | { |
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| 167 | atomic_t *v = (atomic_t *)l; |
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| 168 | |||
| 169 | atomic_dec(v); |
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| 170 | } |
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| 171 | |||
| 172 | static inline void atomic_long_add(long i, atomic_long_t *l) |
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| 173 | { |
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| 174 | atomic_t *v = (atomic_t *)l; |
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| 175 | |||
| 176 | atomic_add(i, v); |
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| 177 | } |
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| 178 | |||
| 179 | static inline void atomic_long_sub(long i, atomic_long_t *l) |
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| 180 | { |
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| 181 | atomic_t *v = (atomic_t *)l; |
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| 182 | |||
| 183 | atomic_sub(i, v); |
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| 184 | } |
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| 185 | |||
| 186 | static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) |
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| 187 | { |
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| 188 | atomic_t *v = (atomic_t *)l; |
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| 189 | |||
| 190 | return atomic_sub_and_test(i, v); |
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| 191 | } |
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| 192 | |||
| 193 | static inline int atomic_long_dec_and_test(atomic_long_t *l) |
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| 194 | { |
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| 195 | atomic_t *v = (atomic_t *)l; |
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| 196 | |||
| 197 | return atomic_dec_and_test(v); |
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| 198 | } |
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| 199 | |||
| 200 | static inline int atomic_long_inc_and_test(atomic_long_t *l) |
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| 201 | { |
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| 202 | atomic_t *v = (atomic_t *)l; |
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| 203 | |||
| 204 | return atomic_inc_and_test(v); |
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| 205 | } |
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| 206 | |||
| 207 | static inline int atomic_long_add_negative(long i, atomic_long_t *l) |
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| 208 | { |
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| 209 | atomic_t *v = (atomic_t *)l; |
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| 210 | |||
| 211 | return atomic_add_negative(i, v); |
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| 212 | } |
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| 213 | |||
| 214 | static inline long atomic_long_add_return(long i, atomic_long_t *l) |
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| 215 | { |
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| 216 | atomic_t *v = (atomic_t *)l; |
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| 217 | |||
| 218 | return (long)atomic_add_return(i, v); |
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| 219 | } |
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| 220 | |||
| 221 | static inline long atomic_long_sub_return(long i, atomic_long_t *l) |
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| 222 | { |
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| 223 | atomic_t *v = (atomic_t *)l; |
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| 224 | |||
| 225 | return (long)atomic_sub_return(i, v); |
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| 226 | } |
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| 227 | |||
| 228 | static inline long atomic_long_inc_return(atomic_long_t *l) |
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| 229 | { |
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| 230 | atomic_t *v = (atomic_t *)l; |
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| 231 | |||
| 232 | return (long)atomic_inc_return(v); |
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| 233 | } |
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| 234 | |||
| 235 | static inline long atomic_long_dec_return(atomic_long_t *l) |
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| 236 | { |
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| 237 | atomic_t *v = (atomic_t *)l; |
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| 238 | |||
| 239 | return (long)atomic_dec_return(v); |
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| 240 | } |
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| 241 | |||
| 242 | static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) |
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| 243 | { |
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| 244 | atomic_t *v = (atomic_t *)l; |
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| 245 | |||
| 246 | return (long)atomic_add_unless(v, a, u); |
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| 247 | } |
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| 248 | |||
| 249 | #define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l)) |
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| 250 | |||
| 251 | #define atomic_long_cmpxchg(l, old, new) \ |
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| 252 | (atomic_cmpxchg((atomic_t *)(l), (old), (new))) |
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| 253 | #define atomic_long_xchg(v, new) \ |
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| 254 | (atomic_xchg((atomic_t *)(v), (new))) |
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| 255 | |||
| 256 | #endif /* BITS_PER_LONG == 64 */ |
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| 257 | |||
| 258 | #endif /* _ASM_GENERIC_ATOMIC_LONG_H */ |