Mark Rutland | 9fa4507 | 2018-09-04 11:48:26 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | |
| 3 | // Generated by scripts/atomic/gen-atomic-fallback.sh |
| 4 | // DO NOT MODIFY THIS FILE DIRECTLY |
| 5 | |
| 6 | #ifndef _LINUX_ATOMIC_FALLBACK_H |
| 7 | #define _LINUX_ATOMIC_FALLBACK_H |
| 8 | |
| 9 | #ifndef xchg_relaxed |
| 10 | #define xchg_relaxed xchg |
| 11 | #define xchg_acquire xchg |
| 12 | #define xchg_release xchg |
| 13 | #else /* xchg_relaxed */ |
| 14 | |
| 15 | #ifndef xchg_acquire |
| 16 | #define xchg_acquire(...) \ |
| 17 | __atomic_op_acquire(xchg, __VA_ARGS__) |
| 18 | #endif |
| 19 | |
| 20 | #ifndef xchg_release |
| 21 | #define xchg_release(...) \ |
| 22 | __atomic_op_release(xchg, __VA_ARGS__) |
| 23 | #endif |
| 24 | |
| 25 | #ifndef xchg |
| 26 | #define xchg(...) \ |
| 27 | __atomic_op_fence(xchg, __VA_ARGS__) |
| 28 | #endif |
| 29 | |
| 30 | #endif /* xchg_relaxed */ |
| 31 | |
| 32 | #ifndef cmpxchg_relaxed |
| 33 | #define cmpxchg_relaxed cmpxchg |
| 34 | #define cmpxchg_acquire cmpxchg |
| 35 | #define cmpxchg_release cmpxchg |
| 36 | #else /* cmpxchg_relaxed */ |
| 37 | |
| 38 | #ifndef cmpxchg_acquire |
| 39 | #define cmpxchg_acquire(...) \ |
| 40 | __atomic_op_acquire(cmpxchg, __VA_ARGS__) |
| 41 | #endif |
| 42 | |
| 43 | #ifndef cmpxchg_release |
| 44 | #define cmpxchg_release(...) \ |
| 45 | __atomic_op_release(cmpxchg, __VA_ARGS__) |
| 46 | #endif |
| 47 | |
| 48 | #ifndef cmpxchg |
| 49 | #define cmpxchg(...) \ |
| 50 | __atomic_op_fence(cmpxchg, __VA_ARGS__) |
| 51 | #endif |
| 52 | |
| 53 | #endif /* cmpxchg_relaxed */ |
| 54 | |
| 55 | #ifndef cmpxchg64_relaxed |
| 56 | #define cmpxchg64_relaxed cmpxchg64 |
| 57 | #define cmpxchg64_acquire cmpxchg64 |
| 58 | #define cmpxchg64_release cmpxchg64 |
| 59 | #else /* cmpxchg64_relaxed */ |
| 60 | |
| 61 | #ifndef cmpxchg64_acquire |
| 62 | #define cmpxchg64_acquire(...) \ |
| 63 | __atomic_op_acquire(cmpxchg64, __VA_ARGS__) |
| 64 | #endif |
| 65 | |
| 66 | #ifndef cmpxchg64_release |
| 67 | #define cmpxchg64_release(...) \ |
| 68 | __atomic_op_release(cmpxchg64, __VA_ARGS__) |
| 69 | #endif |
| 70 | |
| 71 | #ifndef cmpxchg64 |
| 72 | #define cmpxchg64(...) \ |
| 73 | __atomic_op_fence(cmpxchg64, __VA_ARGS__) |
| 74 | #endif |
| 75 | |
| 76 | #endif /* cmpxchg64_relaxed */ |
| 77 | |
| 78 | #ifndef atomic_read_acquire |
| 79 | static inline int |
| 80 | atomic_read_acquire(const atomic_t *v) |
| 81 | { |
| 82 | return smp_load_acquire(&(v)->counter); |
| 83 | } |
| 84 | #define atomic_read_acquire atomic_read_acquire |
| 85 | #endif |
| 86 | |
| 87 | #ifndef atomic_set_release |
| 88 | static inline void |
| 89 | atomic_set_release(atomic_t *v, int i) |
| 90 | { |
| 91 | smp_store_release(&(v)->counter, i); |
| 92 | } |
| 93 | #define atomic_set_release atomic_set_release |
| 94 | #endif |
| 95 | |
| 96 | #ifndef atomic_add_return_relaxed |
| 97 | #define atomic_add_return_acquire atomic_add_return |
| 98 | #define atomic_add_return_release atomic_add_return |
| 99 | #define atomic_add_return_relaxed atomic_add_return |
| 100 | #else /* atomic_add_return_relaxed */ |
| 101 | |
| 102 | #ifndef atomic_add_return_acquire |
| 103 | static inline int |
| 104 | atomic_add_return_acquire(int i, atomic_t *v) |
| 105 | { |
| 106 | int ret = atomic_add_return_relaxed(i, v); |
| 107 | __atomic_acquire_fence(); |
| 108 | return ret; |
| 109 | } |
| 110 | #define atomic_add_return_acquire atomic_add_return_acquire |
| 111 | #endif |
| 112 | |
| 113 | #ifndef atomic_add_return_release |
| 114 | static inline int |
| 115 | atomic_add_return_release(int i, atomic_t *v) |
| 116 | { |
| 117 | __atomic_release_fence(); |
| 118 | return atomic_add_return_relaxed(i, v); |
| 119 | } |
| 120 | #define atomic_add_return_release atomic_add_return_release |
| 121 | #endif |
| 122 | |
| 123 | #ifndef atomic_add_return |
| 124 | static inline int |
| 125 | atomic_add_return(int i, atomic_t *v) |
| 126 | { |
| 127 | int ret; |
| 128 | __atomic_pre_full_fence(); |
| 129 | ret = atomic_add_return_relaxed(i, v); |
| 130 | __atomic_post_full_fence(); |
| 131 | return ret; |
| 132 | } |
| 133 | #define atomic_add_return atomic_add_return |
| 134 | #endif |
| 135 | |
| 136 | #endif /* atomic_add_return_relaxed */ |
| 137 | |
| 138 | #ifndef atomic_fetch_add_relaxed |
| 139 | #define atomic_fetch_add_acquire atomic_fetch_add |
| 140 | #define atomic_fetch_add_release atomic_fetch_add |
| 141 | #define atomic_fetch_add_relaxed atomic_fetch_add |
| 142 | #else /* atomic_fetch_add_relaxed */ |
| 143 | |
| 144 | #ifndef atomic_fetch_add_acquire |
| 145 | static inline int |
| 146 | atomic_fetch_add_acquire(int i, atomic_t *v) |
| 147 | { |
| 148 | int ret = atomic_fetch_add_relaxed(i, v); |
| 149 | __atomic_acquire_fence(); |
| 150 | return ret; |
| 151 | } |
| 152 | #define atomic_fetch_add_acquire atomic_fetch_add_acquire |
| 153 | #endif |
| 154 | |
| 155 | #ifndef atomic_fetch_add_release |
| 156 | static inline int |
| 157 | atomic_fetch_add_release(int i, atomic_t *v) |
| 158 | { |
| 159 | __atomic_release_fence(); |
| 160 | return atomic_fetch_add_relaxed(i, v); |
| 161 | } |
| 162 | #define atomic_fetch_add_release atomic_fetch_add_release |
| 163 | #endif |
| 164 | |
| 165 | #ifndef atomic_fetch_add |
| 166 | static inline int |
| 167 | atomic_fetch_add(int i, atomic_t *v) |
| 168 | { |
| 169 | int ret; |
| 170 | __atomic_pre_full_fence(); |
| 171 | ret = atomic_fetch_add_relaxed(i, v); |
| 172 | __atomic_post_full_fence(); |
| 173 | return ret; |
| 174 | } |
| 175 | #define atomic_fetch_add atomic_fetch_add |
| 176 | #endif |
| 177 | |
| 178 | #endif /* atomic_fetch_add_relaxed */ |
| 179 | |
| 180 | #ifndef atomic_sub_return_relaxed |
| 181 | #define atomic_sub_return_acquire atomic_sub_return |
| 182 | #define atomic_sub_return_release atomic_sub_return |
| 183 | #define atomic_sub_return_relaxed atomic_sub_return |
| 184 | #else /* atomic_sub_return_relaxed */ |
| 185 | |
| 186 | #ifndef atomic_sub_return_acquire |
| 187 | static inline int |
| 188 | atomic_sub_return_acquire(int i, atomic_t *v) |
| 189 | { |
| 190 | int ret = atomic_sub_return_relaxed(i, v); |
| 191 | __atomic_acquire_fence(); |
| 192 | return ret; |
| 193 | } |
| 194 | #define atomic_sub_return_acquire atomic_sub_return_acquire |
| 195 | #endif |
| 196 | |
| 197 | #ifndef atomic_sub_return_release |
| 198 | static inline int |
| 199 | atomic_sub_return_release(int i, atomic_t *v) |
| 200 | { |
| 201 | __atomic_release_fence(); |
| 202 | return atomic_sub_return_relaxed(i, v); |
| 203 | } |
| 204 | #define atomic_sub_return_release atomic_sub_return_release |
| 205 | #endif |
| 206 | |
| 207 | #ifndef atomic_sub_return |
| 208 | static inline int |
| 209 | atomic_sub_return(int i, atomic_t *v) |
| 210 | { |
| 211 | int ret; |
| 212 | __atomic_pre_full_fence(); |
| 213 | ret = atomic_sub_return_relaxed(i, v); |
| 214 | __atomic_post_full_fence(); |
| 215 | return ret; |
| 216 | } |
| 217 | #define atomic_sub_return atomic_sub_return |
| 218 | #endif |
| 219 | |
| 220 | #endif /* atomic_sub_return_relaxed */ |
| 221 | |
| 222 | #ifndef atomic_fetch_sub_relaxed |
| 223 | #define atomic_fetch_sub_acquire atomic_fetch_sub |
| 224 | #define atomic_fetch_sub_release atomic_fetch_sub |
| 225 | #define atomic_fetch_sub_relaxed atomic_fetch_sub |
| 226 | #else /* atomic_fetch_sub_relaxed */ |
| 227 | |
| 228 | #ifndef atomic_fetch_sub_acquire |
| 229 | static inline int |
| 230 | atomic_fetch_sub_acquire(int i, atomic_t *v) |
| 231 | { |
| 232 | int ret = atomic_fetch_sub_relaxed(i, v); |
| 233 | __atomic_acquire_fence(); |
| 234 | return ret; |
| 235 | } |
| 236 | #define atomic_fetch_sub_acquire atomic_fetch_sub_acquire |
| 237 | #endif |
| 238 | |
| 239 | #ifndef atomic_fetch_sub_release |
| 240 | static inline int |
| 241 | atomic_fetch_sub_release(int i, atomic_t *v) |
| 242 | { |
| 243 | __atomic_release_fence(); |
| 244 | return atomic_fetch_sub_relaxed(i, v); |
| 245 | } |
| 246 | #define atomic_fetch_sub_release atomic_fetch_sub_release |
| 247 | #endif |
| 248 | |
| 249 | #ifndef atomic_fetch_sub |
| 250 | static inline int |
| 251 | atomic_fetch_sub(int i, atomic_t *v) |
| 252 | { |
| 253 | int ret; |
| 254 | __atomic_pre_full_fence(); |
| 255 | ret = atomic_fetch_sub_relaxed(i, v); |
| 256 | __atomic_post_full_fence(); |
| 257 | return ret; |
| 258 | } |
| 259 | #define atomic_fetch_sub atomic_fetch_sub |
| 260 | #endif |
| 261 | |
| 262 | #endif /* atomic_fetch_sub_relaxed */ |
| 263 | |
| 264 | #ifndef atomic_inc |
| 265 | static inline void |
| 266 | atomic_inc(atomic_t *v) |
| 267 | { |
| 268 | atomic_add(1, v); |
| 269 | } |
| 270 | #define atomic_inc atomic_inc |
| 271 | #endif |
| 272 | |
| 273 | #ifndef atomic_inc_return_relaxed |
| 274 | #ifdef atomic_inc_return |
| 275 | #define atomic_inc_return_acquire atomic_inc_return |
| 276 | #define atomic_inc_return_release atomic_inc_return |
| 277 | #define atomic_inc_return_relaxed atomic_inc_return |
| 278 | #endif /* atomic_inc_return */ |
| 279 | |
| 280 | #ifndef atomic_inc_return |
| 281 | static inline int |
| 282 | atomic_inc_return(atomic_t *v) |
| 283 | { |
| 284 | return atomic_add_return(1, v); |
| 285 | } |
| 286 | #define atomic_inc_return atomic_inc_return |
| 287 | #endif |
| 288 | |
| 289 | #ifndef atomic_inc_return_acquire |
| 290 | static inline int |
| 291 | atomic_inc_return_acquire(atomic_t *v) |
| 292 | { |
| 293 | return atomic_add_return_acquire(1, v); |
| 294 | } |
| 295 | #define atomic_inc_return_acquire atomic_inc_return_acquire |
| 296 | #endif |
| 297 | |
| 298 | #ifndef atomic_inc_return_release |
| 299 | static inline int |
| 300 | atomic_inc_return_release(atomic_t *v) |
| 301 | { |
| 302 | return atomic_add_return_release(1, v); |
| 303 | } |
| 304 | #define atomic_inc_return_release atomic_inc_return_release |
| 305 | #endif |
| 306 | |
| 307 | #ifndef atomic_inc_return_relaxed |
| 308 | static inline int |
| 309 | atomic_inc_return_relaxed(atomic_t *v) |
| 310 | { |
| 311 | return atomic_add_return_relaxed(1, v); |
| 312 | } |
| 313 | #define atomic_inc_return_relaxed atomic_inc_return_relaxed |
| 314 | #endif |
| 315 | |
| 316 | #else /* atomic_inc_return_relaxed */ |
| 317 | |
| 318 | #ifndef atomic_inc_return_acquire |
| 319 | static inline int |
| 320 | atomic_inc_return_acquire(atomic_t *v) |
| 321 | { |
| 322 | int ret = atomic_inc_return_relaxed(v); |
| 323 | __atomic_acquire_fence(); |
| 324 | return ret; |
| 325 | } |
| 326 | #define atomic_inc_return_acquire atomic_inc_return_acquire |
| 327 | #endif |
| 328 | |
| 329 | #ifndef atomic_inc_return_release |
| 330 | static inline int |
| 331 | atomic_inc_return_release(atomic_t *v) |
| 332 | { |
| 333 | __atomic_release_fence(); |
| 334 | return atomic_inc_return_relaxed(v); |
| 335 | } |
| 336 | #define atomic_inc_return_release atomic_inc_return_release |
| 337 | #endif |
| 338 | |
| 339 | #ifndef atomic_inc_return |
| 340 | static inline int |
| 341 | atomic_inc_return(atomic_t *v) |
| 342 | { |
| 343 | int ret; |
| 344 | __atomic_pre_full_fence(); |
| 345 | ret = atomic_inc_return_relaxed(v); |
| 346 | __atomic_post_full_fence(); |
| 347 | return ret; |
| 348 | } |
| 349 | #define atomic_inc_return atomic_inc_return |
| 350 | #endif |
| 351 | |
| 352 | #endif /* atomic_inc_return_relaxed */ |
| 353 | |
| 354 | #ifndef atomic_fetch_inc_relaxed |
| 355 | #ifdef atomic_fetch_inc |
| 356 | #define atomic_fetch_inc_acquire atomic_fetch_inc |
| 357 | #define atomic_fetch_inc_release atomic_fetch_inc |
| 358 | #define atomic_fetch_inc_relaxed atomic_fetch_inc |
| 359 | #endif /* atomic_fetch_inc */ |
| 360 | |
| 361 | #ifndef atomic_fetch_inc |
| 362 | static inline int |
| 363 | atomic_fetch_inc(atomic_t *v) |
| 364 | { |
| 365 | return atomic_fetch_add(1, v); |
| 366 | } |
| 367 | #define atomic_fetch_inc atomic_fetch_inc |
| 368 | #endif |
| 369 | |
| 370 | #ifndef atomic_fetch_inc_acquire |
| 371 | static inline int |
| 372 | atomic_fetch_inc_acquire(atomic_t *v) |
| 373 | { |
| 374 | return atomic_fetch_add_acquire(1, v); |
| 375 | } |
| 376 | #define atomic_fetch_inc_acquire atomic_fetch_inc_acquire |
| 377 | #endif |
| 378 | |
| 379 | #ifndef atomic_fetch_inc_release |
| 380 | static inline int |
| 381 | atomic_fetch_inc_release(atomic_t *v) |
| 382 | { |
| 383 | return atomic_fetch_add_release(1, v); |
| 384 | } |
| 385 | #define atomic_fetch_inc_release atomic_fetch_inc_release |
| 386 | #endif |
| 387 | |
| 388 | #ifndef atomic_fetch_inc_relaxed |
| 389 | static inline int |
| 390 | atomic_fetch_inc_relaxed(atomic_t *v) |
| 391 | { |
| 392 | return atomic_fetch_add_relaxed(1, v); |
| 393 | } |
| 394 | #define atomic_fetch_inc_relaxed atomic_fetch_inc_relaxed |
| 395 | #endif |
| 396 | |
| 397 | #else /* atomic_fetch_inc_relaxed */ |
| 398 | |
| 399 | #ifndef atomic_fetch_inc_acquire |
| 400 | static inline int |
| 401 | atomic_fetch_inc_acquire(atomic_t *v) |
| 402 | { |
| 403 | int ret = atomic_fetch_inc_relaxed(v); |
| 404 | __atomic_acquire_fence(); |
| 405 | return ret; |
| 406 | } |
| 407 | #define atomic_fetch_inc_acquire atomic_fetch_inc_acquire |
| 408 | #endif |
| 409 | |
| 410 | #ifndef atomic_fetch_inc_release |
| 411 | static inline int |
| 412 | atomic_fetch_inc_release(atomic_t *v) |
| 413 | { |
| 414 | __atomic_release_fence(); |
| 415 | return atomic_fetch_inc_relaxed(v); |
| 416 | } |
| 417 | #define atomic_fetch_inc_release atomic_fetch_inc_release |
| 418 | #endif |
| 419 | |
| 420 | #ifndef atomic_fetch_inc |
| 421 | static inline int |
| 422 | atomic_fetch_inc(atomic_t *v) |
| 423 | { |
| 424 | int ret; |
| 425 | __atomic_pre_full_fence(); |
| 426 | ret = atomic_fetch_inc_relaxed(v); |
| 427 | __atomic_post_full_fence(); |
| 428 | return ret; |
| 429 | } |
| 430 | #define atomic_fetch_inc atomic_fetch_inc |
| 431 | #endif |
| 432 | |
| 433 | #endif /* atomic_fetch_inc_relaxed */ |
| 434 | |
| 435 | #ifndef atomic_dec |
| 436 | static inline void |
| 437 | atomic_dec(atomic_t *v) |
| 438 | { |
| 439 | atomic_sub(1, v); |
| 440 | } |
| 441 | #define atomic_dec atomic_dec |
| 442 | #endif |
| 443 | |
| 444 | #ifndef atomic_dec_return_relaxed |
| 445 | #ifdef atomic_dec_return |
| 446 | #define atomic_dec_return_acquire atomic_dec_return |
| 447 | #define atomic_dec_return_release atomic_dec_return |
| 448 | #define atomic_dec_return_relaxed atomic_dec_return |
| 449 | #endif /* atomic_dec_return */ |
| 450 | |
| 451 | #ifndef atomic_dec_return |
| 452 | static inline int |
| 453 | atomic_dec_return(atomic_t *v) |
| 454 | { |
| 455 | return atomic_sub_return(1, v); |
| 456 | } |
| 457 | #define atomic_dec_return atomic_dec_return |
| 458 | #endif |
| 459 | |
| 460 | #ifndef atomic_dec_return_acquire |
| 461 | static inline int |
| 462 | atomic_dec_return_acquire(atomic_t *v) |
| 463 | { |
| 464 | return atomic_sub_return_acquire(1, v); |
| 465 | } |
| 466 | #define atomic_dec_return_acquire atomic_dec_return_acquire |
| 467 | #endif |
| 468 | |
| 469 | #ifndef atomic_dec_return_release |
| 470 | static inline int |
| 471 | atomic_dec_return_release(atomic_t *v) |
| 472 | { |
| 473 | return atomic_sub_return_release(1, v); |
| 474 | } |
| 475 | #define atomic_dec_return_release atomic_dec_return_release |
| 476 | #endif |
| 477 | |
| 478 | #ifndef atomic_dec_return_relaxed |
| 479 | static inline int |
| 480 | atomic_dec_return_relaxed(atomic_t *v) |
| 481 | { |
| 482 | return atomic_sub_return_relaxed(1, v); |
| 483 | } |
| 484 | #define atomic_dec_return_relaxed atomic_dec_return_relaxed |
| 485 | #endif |
| 486 | |
| 487 | #else /* atomic_dec_return_relaxed */ |
| 488 | |
| 489 | #ifndef atomic_dec_return_acquire |
| 490 | static inline int |
| 491 | atomic_dec_return_acquire(atomic_t *v) |
| 492 | { |
| 493 | int ret = atomic_dec_return_relaxed(v); |
| 494 | __atomic_acquire_fence(); |
| 495 | return ret; |
| 496 | } |
| 497 | #define atomic_dec_return_acquire atomic_dec_return_acquire |
| 498 | #endif |
| 499 | |
| 500 | #ifndef atomic_dec_return_release |
| 501 | static inline int |
| 502 | atomic_dec_return_release(atomic_t *v) |
| 503 | { |
| 504 | __atomic_release_fence(); |
| 505 | return atomic_dec_return_relaxed(v); |
| 506 | } |
| 507 | #define atomic_dec_return_release atomic_dec_return_release |
| 508 | #endif |
| 509 | |
| 510 | #ifndef atomic_dec_return |
| 511 | static inline int |
| 512 | atomic_dec_return(atomic_t *v) |
| 513 | { |
| 514 | int ret; |
| 515 | __atomic_pre_full_fence(); |
| 516 | ret = atomic_dec_return_relaxed(v); |
| 517 | __atomic_post_full_fence(); |
| 518 | return ret; |
| 519 | } |
| 520 | #define atomic_dec_return atomic_dec_return |
| 521 | #endif |
| 522 | |
| 523 | #endif /* atomic_dec_return_relaxed */ |
| 524 | |
| 525 | #ifndef atomic_fetch_dec_relaxed |
| 526 | #ifdef atomic_fetch_dec |
| 527 | #define atomic_fetch_dec_acquire atomic_fetch_dec |
| 528 | #define atomic_fetch_dec_release atomic_fetch_dec |
| 529 | #define atomic_fetch_dec_relaxed atomic_fetch_dec |
| 530 | #endif /* atomic_fetch_dec */ |
| 531 | |
| 532 | #ifndef atomic_fetch_dec |
| 533 | static inline int |
| 534 | atomic_fetch_dec(atomic_t *v) |
| 535 | { |
| 536 | return atomic_fetch_sub(1, v); |
| 537 | } |
| 538 | #define atomic_fetch_dec atomic_fetch_dec |
| 539 | #endif |
| 540 | |
| 541 | #ifndef atomic_fetch_dec_acquire |
| 542 | static inline int |
| 543 | atomic_fetch_dec_acquire(atomic_t *v) |
| 544 | { |
| 545 | return atomic_fetch_sub_acquire(1, v); |
| 546 | } |
| 547 | #define atomic_fetch_dec_acquire atomic_fetch_dec_acquire |
| 548 | #endif |
| 549 | |
| 550 | #ifndef atomic_fetch_dec_release |
| 551 | static inline int |
| 552 | atomic_fetch_dec_release(atomic_t *v) |
| 553 | { |
| 554 | return atomic_fetch_sub_release(1, v); |
| 555 | } |
| 556 | #define atomic_fetch_dec_release atomic_fetch_dec_release |
| 557 | #endif |
| 558 | |
| 559 | #ifndef atomic_fetch_dec_relaxed |
| 560 | static inline int |
| 561 | atomic_fetch_dec_relaxed(atomic_t *v) |
| 562 | { |
| 563 | return atomic_fetch_sub_relaxed(1, v); |
| 564 | } |
| 565 | #define atomic_fetch_dec_relaxed atomic_fetch_dec_relaxed |
| 566 | #endif |
| 567 | |
| 568 | #else /* atomic_fetch_dec_relaxed */ |
| 569 | |
| 570 | #ifndef atomic_fetch_dec_acquire |
| 571 | static inline int |
| 572 | atomic_fetch_dec_acquire(atomic_t *v) |
| 573 | { |
| 574 | int ret = atomic_fetch_dec_relaxed(v); |
| 575 | __atomic_acquire_fence(); |
| 576 | return ret; |
| 577 | } |
| 578 | #define atomic_fetch_dec_acquire atomic_fetch_dec_acquire |
| 579 | #endif |
| 580 | |
| 581 | #ifndef atomic_fetch_dec_release |
| 582 | static inline int |
| 583 | atomic_fetch_dec_release(atomic_t *v) |
| 584 | { |
| 585 | __atomic_release_fence(); |
| 586 | return atomic_fetch_dec_relaxed(v); |
| 587 | } |
| 588 | #define atomic_fetch_dec_release atomic_fetch_dec_release |
| 589 | #endif |
| 590 | |
| 591 | #ifndef atomic_fetch_dec |
| 592 | static inline int |
| 593 | atomic_fetch_dec(atomic_t *v) |
| 594 | { |
| 595 | int ret; |
| 596 | __atomic_pre_full_fence(); |
| 597 | ret = atomic_fetch_dec_relaxed(v); |
| 598 | __atomic_post_full_fence(); |
| 599 | return ret; |
| 600 | } |
| 601 | #define atomic_fetch_dec atomic_fetch_dec |
| 602 | #endif |
| 603 | |
| 604 | #endif /* atomic_fetch_dec_relaxed */ |
| 605 | |
| 606 | #ifndef atomic_fetch_and_relaxed |
| 607 | #define atomic_fetch_and_acquire atomic_fetch_and |
| 608 | #define atomic_fetch_and_release atomic_fetch_and |
| 609 | #define atomic_fetch_and_relaxed atomic_fetch_and |
| 610 | #else /* atomic_fetch_and_relaxed */ |
| 611 | |
| 612 | #ifndef atomic_fetch_and_acquire |
| 613 | static inline int |
| 614 | atomic_fetch_and_acquire(int i, atomic_t *v) |
| 615 | { |
| 616 | int ret = atomic_fetch_and_relaxed(i, v); |
| 617 | __atomic_acquire_fence(); |
| 618 | return ret; |
| 619 | } |
| 620 | #define atomic_fetch_and_acquire atomic_fetch_and_acquire |
| 621 | #endif |
| 622 | |
| 623 | #ifndef atomic_fetch_and_release |
| 624 | static inline int |
| 625 | atomic_fetch_and_release(int i, atomic_t *v) |
| 626 | { |
| 627 | __atomic_release_fence(); |
| 628 | return atomic_fetch_and_relaxed(i, v); |
| 629 | } |
| 630 | #define atomic_fetch_and_release atomic_fetch_and_release |
| 631 | #endif |
| 632 | |
| 633 | #ifndef atomic_fetch_and |
| 634 | static inline int |
| 635 | atomic_fetch_and(int i, atomic_t *v) |
| 636 | { |
| 637 | int ret; |
| 638 | __atomic_pre_full_fence(); |
| 639 | ret = atomic_fetch_and_relaxed(i, v); |
| 640 | __atomic_post_full_fence(); |
| 641 | return ret; |
| 642 | } |
| 643 | #define atomic_fetch_and atomic_fetch_and |
| 644 | #endif |
| 645 | |
| 646 | #endif /* atomic_fetch_and_relaxed */ |
| 647 | |
| 648 | #ifndef atomic_andnot |
| 649 | static inline void |
| 650 | atomic_andnot(int i, atomic_t *v) |
| 651 | { |
| 652 | atomic_and(~i, v); |
| 653 | } |
| 654 | #define atomic_andnot atomic_andnot |
| 655 | #endif |
| 656 | |
| 657 | #ifndef atomic_fetch_andnot_relaxed |
| 658 | #ifdef atomic_fetch_andnot |
| 659 | #define atomic_fetch_andnot_acquire atomic_fetch_andnot |
| 660 | #define atomic_fetch_andnot_release atomic_fetch_andnot |
| 661 | #define atomic_fetch_andnot_relaxed atomic_fetch_andnot |
| 662 | #endif /* atomic_fetch_andnot */ |
| 663 | |
| 664 | #ifndef atomic_fetch_andnot |
| 665 | static inline int |
| 666 | atomic_fetch_andnot(int i, atomic_t *v) |
| 667 | { |
| 668 | return atomic_fetch_and(~i, v); |
| 669 | } |
| 670 | #define atomic_fetch_andnot atomic_fetch_andnot |
| 671 | #endif |
| 672 | |
| 673 | #ifndef atomic_fetch_andnot_acquire |
| 674 | static inline int |
| 675 | atomic_fetch_andnot_acquire(int i, atomic_t *v) |
| 676 | { |
| 677 | return atomic_fetch_and_acquire(~i, v); |
| 678 | } |
| 679 | #define atomic_fetch_andnot_acquire atomic_fetch_andnot_acquire |
| 680 | #endif |
| 681 | |
| 682 | #ifndef atomic_fetch_andnot_release |
| 683 | static inline int |
| 684 | atomic_fetch_andnot_release(int i, atomic_t *v) |
| 685 | { |
| 686 | return atomic_fetch_and_release(~i, v); |
| 687 | } |
| 688 | #define atomic_fetch_andnot_release atomic_fetch_andnot_release |
| 689 | #endif |
| 690 | |
| 691 | #ifndef atomic_fetch_andnot_relaxed |
| 692 | static inline int |
| 693 | atomic_fetch_andnot_relaxed(int i, atomic_t *v) |
| 694 | { |
| 695 | return atomic_fetch_and_relaxed(~i, v); |
| 696 | } |
| 697 | #define atomic_fetch_andnot_relaxed atomic_fetch_andnot_relaxed |
| 698 | #endif |
| 699 | |
| 700 | #else /* atomic_fetch_andnot_relaxed */ |
| 701 | |
| 702 | #ifndef atomic_fetch_andnot_acquire |
| 703 | static inline int |
| 704 | atomic_fetch_andnot_acquire(int i, atomic_t *v) |
| 705 | { |
| 706 | int ret = atomic_fetch_andnot_relaxed(i, v); |
| 707 | __atomic_acquire_fence(); |
| 708 | return ret; |
| 709 | } |
| 710 | #define atomic_fetch_andnot_acquire atomic_fetch_andnot_acquire |
| 711 | #endif |
| 712 | |
| 713 | #ifndef atomic_fetch_andnot_release |
| 714 | static inline int |
| 715 | atomic_fetch_andnot_release(int i, atomic_t *v) |
| 716 | { |
| 717 | __atomic_release_fence(); |
| 718 | return atomic_fetch_andnot_relaxed(i, v); |
| 719 | } |
| 720 | #define atomic_fetch_andnot_release atomic_fetch_andnot_release |
| 721 | #endif |
| 722 | |
| 723 | #ifndef atomic_fetch_andnot |
| 724 | static inline int |
| 725 | atomic_fetch_andnot(int i, atomic_t *v) |
| 726 | { |
| 727 | int ret; |
| 728 | __atomic_pre_full_fence(); |
| 729 | ret = atomic_fetch_andnot_relaxed(i, v); |
| 730 | __atomic_post_full_fence(); |
| 731 | return ret; |
| 732 | } |
| 733 | #define atomic_fetch_andnot atomic_fetch_andnot |
| 734 | #endif |
| 735 | |
| 736 | #endif /* atomic_fetch_andnot_relaxed */ |
| 737 | |
| 738 | #ifndef atomic_fetch_or_relaxed |
| 739 | #define atomic_fetch_or_acquire atomic_fetch_or |
| 740 | #define atomic_fetch_or_release atomic_fetch_or |
| 741 | #define atomic_fetch_or_relaxed atomic_fetch_or |
| 742 | #else /* atomic_fetch_or_relaxed */ |
| 743 | |
| 744 | #ifndef atomic_fetch_or_acquire |
| 745 | static inline int |
| 746 | atomic_fetch_or_acquire(int i, atomic_t *v) |
| 747 | { |
| 748 | int ret = atomic_fetch_or_relaxed(i, v); |
| 749 | __atomic_acquire_fence(); |
| 750 | return ret; |
| 751 | } |
| 752 | #define atomic_fetch_or_acquire atomic_fetch_or_acquire |
| 753 | #endif |
| 754 | |
| 755 | #ifndef atomic_fetch_or_release |
| 756 | static inline int |
| 757 | atomic_fetch_or_release(int i, atomic_t *v) |
| 758 | { |
| 759 | __atomic_release_fence(); |
| 760 | return atomic_fetch_or_relaxed(i, v); |
| 761 | } |
| 762 | #define atomic_fetch_or_release atomic_fetch_or_release |
| 763 | #endif |
| 764 | |
| 765 | #ifndef atomic_fetch_or |
| 766 | static inline int |
| 767 | atomic_fetch_or(int i, atomic_t *v) |
| 768 | { |
| 769 | int ret; |
| 770 | __atomic_pre_full_fence(); |
| 771 | ret = atomic_fetch_or_relaxed(i, v); |
| 772 | __atomic_post_full_fence(); |
| 773 | return ret; |
| 774 | } |
| 775 | #define atomic_fetch_or atomic_fetch_or |
| 776 | #endif |
| 777 | |
| 778 | #endif /* atomic_fetch_or_relaxed */ |
| 779 | |
| 780 | #ifndef atomic_fetch_xor_relaxed |
| 781 | #define atomic_fetch_xor_acquire atomic_fetch_xor |
| 782 | #define atomic_fetch_xor_release atomic_fetch_xor |
| 783 | #define atomic_fetch_xor_relaxed atomic_fetch_xor |
| 784 | #else /* atomic_fetch_xor_relaxed */ |
| 785 | |
| 786 | #ifndef atomic_fetch_xor_acquire |
| 787 | static inline int |
| 788 | atomic_fetch_xor_acquire(int i, atomic_t *v) |
| 789 | { |
| 790 | int ret = atomic_fetch_xor_relaxed(i, v); |
| 791 | __atomic_acquire_fence(); |
| 792 | return ret; |
| 793 | } |
| 794 | #define atomic_fetch_xor_acquire atomic_fetch_xor_acquire |
| 795 | #endif |
| 796 | |
| 797 | #ifndef atomic_fetch_xor_release |
| 798 | static inline int |
| 799 | atomic_fetch_xor_release(int i, atomic_t *v) |
| 800 | { |
| 801 | __atomic_release_fence(); |
| 802 | return atomic_fetch_xor_relaxed(i, v); |
| 803 | } |
| 804 | #define atomic_fetch_xor_release atomic_fetch_xor_release |
| 805 | #endif |
| 806 | |
| 807 | #ifndef atomic_fetch_xor |
| 808 | static inline int |
| 809 | atomic_fetch_xor(int i, atomic_t *v) |
| 810 | { |
| 811 | int ret; |
| 812 | __atomic_pre_full_fence(); |
| 813 | ret = atomic_fetch_xor_relaxed(i, v); |
| 814 | __atomic_post_full_fence(); |
| 815 | return ret; |
| 816 | } |
| 817 | #define atomic_fetch_xor atomic_fetch_xor |
| 818 | #endif |
| 819 | |
| 820 | #endif /* atomic_fetch_xor_relaxed */ |
| 821 | |
| 822 | #ifndef atomic_xchg_relaxed |
| 823 | #define atomic_xchg_acquire atomic_xchg |
| 824 | #define atomic_xchg_release atomic_xchg |
| 825 | #define atomic_xchg_relaxed atomic_xchg |
| 826 | #else /* atomic_xchg_relaxed */ |
| 827 | |
| 828 | #ifndef atomic_xchg_acquire |
| 829 | static inline int |
| 830 | atomic_xchg_acquire(atomic_t *v, int i) |
| 831 | { |
| 832 | int ret = atomic_xchg_relaxed(v, i); |
| 833 | __atomic_acquire_fence(); |
| 834 | return ret; |
| 835 | } |
| 836 | #define atomic_xchg_acquire atomic_xchg_acquire |
| 837 | #endif |
| 838 | |
| 839 | #ifndef atomic_xchg_release |
| 840 | static inline int |
| 841 | atomic_xchg_release(atomic_t *v, int i) |
| 842 | { |
| 843 | __atomic_release_fence(); |
| 844 | return atomic_xchg_relaxed(v, i); |
| 845 | } |
| 846 | #define atomic_xchg_release atomic_xchg_release |
| 847 | #endif |
| 848 | |
| 849 | #ifndef atomic_xchg |
| 850 | static inline int |
| 851 | atomic_xchg(atomic_t *v, int i) |
| 852 | { |
| 853 | int ret; |
| 854 | __atomic_pre_full_fence(); |
| 855 | ret = atomic_xchg_relaxed(v, i); |
| 856 | __atomic_post_full_fence(); |
| 857 | return ret; |
| 858 | } |
| 859 | #define atomic_xchg atomic_xchg |
| 860 | #endif |
| 861 | |
| 862 | #endif /* atomic_xchg_relaxed */ |
| 863 | |
| 864 | #ifndef atomic_cmpxchg_relaxed |
| 865 | #define atomic_cmpxchg_acquire atomic_cmpxchg |
| 866 | #define atomic_cmpxchg_release atomic_cmpxchg |
| 867 | #define atomic_cmpxchg_relaxed atomic_cmpxchg |
| 868 | #else /* atomic_cmpxchg_relaxed */ |
| 869 | |
| 870 | #ifndef atomic_cmpxchg_acquire |
| 871 | static inline int |
| 872 | atomic_cmpxchg_acquire(atomic_t *v, int old, int new) |
| 873 | { |
| 874 | int ret = atomic_cmpxchg_relaxed(v, old, new); |
| 875 | __atomic_acquire_fence(); |
| 876 | return ret; |
| 877 | } |
| 878 | #define atomic_cmpxchg_acquire atomic_cmpxchg_acquire |
| 879 | #endif |
| 880 | |
| 881 | #ifndef atomic_cmpxchg_release |
| 882 | static inline int |
| 883 | atomic_cmpxchg_release(atomic_t *v, int old, int new) |
| 884 | { |
| 885 | __atomic_release_fence(); |
| 886 | return atomic_cmpxchg_relaxed(v, old, new); |
| 887 | } |
| 888 | #define atomic_cmpxchg_release atomic_cmpxchg_release |
| 889 | #endif |
| 890 | |
| 891 | #ifndef atomic_cmpxchg |
| 892 | static inline int |
| 893 | atomic_cmpxchg(atomic_t *v, int old, int new) |
| 894 | { |
| 895 | int ret; |
| 896 | __atomic_pre_full_fence(); |
| 897 | ret = atomic_cmpxchg_relaxed(v, old, new); |
| 898 | __atomic_post_full_fence(); |
| 899 | return ret; |
| 900 | } |
| 901 | #define atomic_cmpxchg atomic_cmpxchg |
| 902 | #endif |
| 903 | |
| 904 | #endif /* atomic_cmpxchg_relaxed */ |
| 905 | |
| 906 | #ifndef atomic_try_cmpxchg_relaxed |
| 907 | #ifdef atomic_try_cmpxchg |
| 908 | #define atomic_try_cmpxchg_acquire atomic_try_cmpxchg |
| 909 | #define atomic_try_cmpxchg_release atomic_try_cmpxchg |
| 910 | #define atomic_try_cmpxchg_relaxed atomic_try_cmpxchg |
| 911 | #endif /* atomic_try_cmpxchg */ |
| 912 | |
| 913 | #ifndef atomic_try_cmpxchg |
| 914 | static inline bool |
| 915 | atomic_try_cmpxchg(atomic_t *v, int *old, int new) |
| 916 | { |
| 917 | int r, o = *old; |
| 918 | r = atomic_cmpxchg(v, o, new); |
| 919 | if (unlikely(r != o)) |
| 920 | *old = r; |
| 921 | return likely(r == o); |
| 922 | } |
| 923 | #define atomic_try_cmpxchg atomic_try_cmpxchg |
| 924 | #endif |
| 925 | |
| 926 | #ifndef atomic_try_cmpxchg_acquire |
| 927 | static inline bool |
| 928 | atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new) |
| 929 | { |
| 930 | int r, o = *old; |
| 931 | r = atomic_cmpxchg_acquire(v, o, new); |
| 932 | if (unlikely(r != o)) |
| 933 | *old = r; |
| 934 | return likely(r == o); |
| 935 | } |
| 936 | #define atomic_try_cmpxchg_acquire atomic_try_cmpxchg_acquire |
| 937 | #endif |
| 938 | |
| 939 | #ifndef atomic_try_cmpxchg_release |
| 940 | static inline bool |
| 941 | atomic_try_cmpxchg_release(atomic_t *v, int *old, int new) |
| 942 | { |
| 943 | int r, o = *old; |
| 944 | r = atomic_cmpxchg_release(v, o, new); |
| 945 | if (unlikely(r != o)) |
| 946 | *old = r; |
| 947 | return likely(r == o); |
| 948 | } |
| 949 | #define atomic_try_cmpxchg_release atomic_try_cmpxchg_release |
| 950 | #endif |
| 951 | |
| 952 | #ifndef atomic_try_cmpxchg_relaxed |
| 953 | static inline bool |
| 954 | atomic_try_cmpxchg_relaxed(atomic_t *v, int *old, int new) |
| 955 | { |
| 956 | int r, o = *old; |
| 957 | r = atomic_cmpxchg_relaxed(v, o, new); |
| 958 | if (unlikely(r != o)) |
| 959 | *old = r; |
| 960 | return likely(r == o); |
| 961 | } |
| 962 | #define atomic_try_cmpxchg_relaxed atomic_try_cmpxchg_relaxed |
| 963 | #endif |
| 964 | |
| 965 | #else /* atomic_try_cmpxchg_relaxed */ |
| 966 | |
| 967 | #ifndef atomic_try_cmpxchg_acquire |
| 968 | static inline bool |
| 969 | atomic_try_cmpxchg_acquire(atomic_t *v, int *old, int new) |
| 970 | { |
| 971 | bool ret = atomic_try_cmpxchg_relaxed(v, old, new); |
| 972 | __atomic_acquire_fence(); |
| 973 | return ret; |
| 974 | } |
| 975 | #define atomic_try_cmpxchg_acquire atomic_try_cmpxchg_acquire |
| 976 | #endif |
| 977 | |
| 978 | #ifndef atomic_try_cmpxchg_release |
| 979 | static inline bool |
| 980 | atomic_try_cmpxchg_release(atomic_t *v, int *old, int new) |
| 981 | { |
| 982 | __atomic_release_fence(); |
| 983 | return atomic_try_cmpxchg_relaxed(v, old, new); |
| 984 | } |
| 985 | #define atomic_try_cmpxchg_release atomic_try_cmpxchg_release |
| 986 | #endif |
| 987 | |
| 988 | #ifndef atomic_try_cmpxchg |
| 989 | static inline bool |
| 990 | atomic_try_cmpxchg(atomic_t *v, int *old, int new) |
| 991 | { |
| 992 | bool ret; |
| 993 | __atomic_pre_full_fence(); |
| 994 | ret = atomic_try_cmpxchg_relaxed(v, old, new); |
| 995 | __atomic_post_full_fence(); |
| 996 | return ret; |
| 997 | } |
| 998 | #define atomic_try_cmpxchg atomic_try_cmpxchg |
| 999 | #endif |
| 1000 | |
| 1001 | #endif /* atomic_try_cmpxchg_relaxed */ |
| 1002 | |
| 1003 | #ifndef atomic_sub_and_test |
| 1004 | /** |
| 1005 | * atomic_sub_and_test - subtract value from variable and test result |
| 1006 | * @i: integer value to subtract |
| 1007 | * @v: pointer of type atomic_t |
| 1008 | * |
| 1009 | * Atomically subtracts @i from @v and returns |
| 1010 | * true if the result is zero, or false for all |
| 1011 | * other cases. |
| 1012 | */ |
| 1013 | static inline bool |
| 1014 | atomic_sub_and_test(int i, atomic_t *v) |
| 1015 | { |
| 1016 | return atomic_sub_return(i, v) == 0; |
| 1017 | } |
| 1018 | #define atomic_sub_and_test atomic_sub_and_test |
| 1019 | #endif |
| 1020 | |
| 1021 | #ifndef atomic_dec_and_test |
| 1022 | /** |
| 1023 | * atomic_dec_and_test - decrement and test |
| 1024 | * @v: pointer of type atomic_t |
| 1025 | * |
| 1026 | * Atomically decrements @v by 1 and |
| 1027 | * returns true if the result is 0, or false for all other |
| 1028 | * cases. |
| 1029 | */ |
| 1030 | static inline bool |
| 1031 | atomic_dec_and_test(atomic_t *v) |
| 1032 | { |
| 1033 | return atomic_dec_return(v) == 0; |
| 1034 | } |
| 1035 | #define atomic_dec_and_test atomic_dec_and_test |
| 1036 | #endif |
| 1037 | |
| 1038 | #ifndef atomic_inc_and_test |
| 1039 | /** |
| 1040 | * atomic_inc_and_test - increment and test |
| 1041 | * @v: pointer of type atomic_t |
| 1042 | * |
| 1043 | * Atomically increments @v by 1 |
| 1044 | * and returns true if the result is zero, or false for all |
| 1045 | * other cases. |
| 1046 | */ |
| 1047 | static inline bool |
| 1048 | atomic_inc_and_test(atomic_t *v) |
| 1049 | { |
| 1050 | return atomic_inc_return(v) == 0; |
| 1051 | } |
| 1052 | #define atomic_inc_and_test atomic_inc_and_test |
| 1053 | #endif |
| 1054 | |
| 1055 | #ifndef atomic_add_negative |
| 1056 | /** |
| 1057 | * atomic_add_negative - add and test if negative |
| 1058 | * @i: integer value to add |
| 1059 | * @v: pointer of type atomic_t |
| 1060 | * |
| 1061 | * Atomically adds @i to @v and returns true |
| 1062 | * if the result is negative, or false when |
| 1063 | * result is greater than or equal to zero. |
| 1064 | */ |
| 1065 | static inline bool |
| 1066 | atomic_add_negative(int i, atomic_t *v) |
| 1067 | { |
| 1068 | return atomic_add_return(i, v) < 0; |
| 1069 | } |
| 1070 | #define atomic_add_negative atomic_add_negative |
| 1071 | #endif |
| 1072 | |
| 1073 | #ifndef atomic_fetch_add_unless |
| 1074 | /** |
| 1075 | * atomic_fetch_add_unless - add unless the number is already a given value |
| 1076 | * @v: pointer of type atomic_t |
| 1077 | * @a: the amount to add to v... |
| 1078 | * @u: ...unless v is equal to u. |
| 1079 | * |
| 1080 | * Atomically adds @a to @v, so long as @v was not already @u. |
| 1081 | * Returns original value of @v |
| 1082 | */ |
| 1083 | static inline int |
| 1084 | atomic_fetch_add_unless(atomic_t *v, int a, int u) |
| 1085 | { |
| 1086 | int c = atomic_read(v); |
| 1087 | |
| 1088 | do { |
| 1089 | if (unlikely(c == u)) |
| 1090 | break; |
| 1091 | } while (!atomic_try_cmpxchg(v, &c, c + a)); |
| 1092 | |
| 1093 | return c; |
| 1094 | } |
| 1095 | #define atomic_fetch_add_unless atomic_fetch_add_unless |
| 1096 | #endif |
| 1097 | |
| 1098 | #ifndef atomic_add_unless |
| 1099 | /** |
| 1100 | * atomic_add_unless - add unless the number is already a given value |
| 1101 | * @v: pointer of type atomic_t |
| 1102 | * @a: the amount to add to v... |
| 1103 | * @u: ...unless v is equal to u. |
| 1104 | * |
| 1105 | * Atomically adds @a to @v, if @v was not already @u. |
| 1106 | * Returns true if the addition was done. |
| 1107 | */ |
| 1108 | static inline bool |
| 1109 | atomic_add_unless(atomic_t *v, int a, int u) |
| 1110 | { |
| 1111 | return atomic_fetch_add_unless(v, a, u) != u; |
| 1112 | } |
| 1113 | #define atomic_add_unless atomic_add_unless |
| 1114 | #endif |
| 1115 | |
| 1116 | #ifndef atomic_inc_not_zero |
| 1117 | /** |
| 1118 | * atomic_inc_not_zero - increment unless the number is zero |
| 1119 | * @v: pointer of type atomic_t |
| 1120 | * |
| 1121 | * Atomically increments @v by 1, if @v is non-zero. |
| 1122 | * Returns true if the increment was done. |
| 1123 | */ |
| 1124 | static inline bool |
| 1125 | atomic_inc_not_zero(atomic_t *v) |
| 1126 | { |
| 1127 | return atomic_add_unless(v, 1, 0); |
| 1128 | } |
| 1129 | #define atomic_inc_not_zero atomic_inc_not_zero |
| 1130 | #endif |
| 1131 | |
| 1132 | #ifndef atomic_inc_unless_negative |
| 1133 | static inline bool |
| 1134 | atomic_inc_unless_negative(atomic_t *v) |
| 1135 | { |
| 1136 | int c = atomic_read(v); |
| 1137 | |
| 1138 | do { |
| 1139 | if (unlikely(c < 0)) |
| 1140 | return false; |
| 1141 | } while (!atomic_try_cmpxchg(v, &c, c + 1)); |
| 1142 | |
| 1143 | return true; |
| 1144 | } |
| 1145 | #define atomic_inc_unless_negative atomic_inc_unless_negative |
| 1146 | #endif |
| 1147 | |
| 1148 | #ifndef atomic_dec_unless_positive |
| 1149 | static inline bool |
| 1150 | atomic_dec_unless_positive(atomic_t *v) |
| 1151 | { |
| 1152 | int c = atomic_read(v); |
| 1153 | |
| 1154 | do { |
| 1155 | if (unlikely(c > 0)) |
| 1156 | return false; |
| 1157 | } while (!atomic_try_cmpxchg(v, &c, c - 1)); |
| 1158 | |
| 1159 | return true; |
| 1160 | } |
| 1161 | #define atomic_dec_unless_positive atomic_dec_unless_positive |
| 1162 | #endif |
| 1163 | |
| 1164 | #ifndef atomic_dec_if_positive |
| 1165 | static inline int |
| 1166 | atomic_dec_if_positive(atomic_t *v) |
| 1167 | { |
| 1168 | int dec, c = atomic_read(v); |
| 1169 | |
| 1170 | do { |
| 1171 | dec = c - 1; |
| 1172 | if (unlikely(dec < 0)) |
| 1173 | break; |
| 1174 | } while (!atomic_try_cmpxchg(v, &c, dec)); |
| 1175 | |
| 1176 | return dec; |
| 1177 | } |
| 1178 | #define atomic_dec_if_positive atomic_dec_if_positive |
| 1179 | #endif |
| 1180 | |
| 1181 | #define atomic_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c)) |
| 1182 | #define atomic_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c)) |
| 1183 | |
| 1184 | #ifdef CONFIG_GENERIC_ATOMIC64 |
| 1185 | #include <asm-generic/atomic64.h> |
| 1186 | #endif |
| 1187 | |
| 1188 | #ifndef atomic64_read_acquire |
| 1189 | static inline s64 |
| 1190 | atomic64_read_acquire(const atomic64_t *v) |
| 1191 | { |
| 1192 | return smp_load_acquire(&(v)->counter); |
| 1193 | } |
| 1194 | #define atomic64_read_acquire atomic64_read_acquire |
| 1195 | #endif |
| 1196 | |
| 1197 | #ifndef atomic64_set_release |
| 1198 | static inline void |
| 1199 | atomic64_set_release(atomic64_t *v, s64 i) |
| 1200 | { |
| 1201 | smp_store_release(&(v)->counter, i); |
| 1202 | } |
| 1203 | #define atomic64_set_release atomic64_set_release |
| 1204 | #endif |
| 1205 | |
| 1206 | #ifndef atomic64_add_return_relaxed |
| 1207 | #define atomic64_add_return_acquire atomic64_add_return |
| 1208 | #define atomic64_add_return_release atomic64_add_return |
| 1209 | #define atomic64_add_return_relaxed atomic64_add_return |
| 1210 | #else /* atomic64_add_return_relaxed */ |
| 1211 | |
| 1212 | #ifndef atomic64_add_return_acquire |
| 1213 | static inline s64 |
| 1214 | atomic64_add_return_acquire(s64 i, atomic64_t *v) |
| 1215 | { |
| 1216 | s64 ret = atomic64_add_return_relaxed(i, v); |
| 1217 | __atomic_acquire_fence(); |
| 1218 | return ret; |
| 1219 | } |
| 1220 | #define atomic64_add_return_acquire atomic64_add_return_acquire |
| 1221 | #endif |
| 1222 | |
| 1223 | #ifndef atomic64_add_return_release |
| 1224 | static inline s64 |
| 1225 | atomic64_add_return_release(s64 i, atomic64_t *v) |
| 1226 | { |
| 1227 | __atomic_release_fence(); |
| 1228 | return atomic64_add_return_relaxed(i, v); |
| 1229 | } |
| 1230 | #define atomic64_add_return_release atomic64_add_return_release |
| 1231 | #endif |
| 1232 | |
| 1233 | #ifndef atomic64_add_return |
| 1234 | static inline s64 |
| 1235 | atomic64_add_return(s64 i, atomic64_t *v) |
| 1236 | { |
| 1237 | s64 ret; |
| 1238 | __atomic_pre_full_fence(); |
| 1239 | ret = atomic64_add_return_relaxed(i, v); |
| 1240 | __atomic_post_full_fence(); |
| 1241 | return ret; |
| 1242 | } |
| 1243 | #define atomic64_add_return atomic64_add_return |
| 1244 | #endif |
| 1245 | |
| 1246 | #endif /* atomic64_add_return_relaxed */ |
| 1247 | |
| 1248 | #ifndef atomic64_fetch_add_relaxed |
| 1249 | #define atomic64_fetch_add_acquire atomic64_fetch_add |
| 1250 | #define atomic64_fetch_add_release atomic64_fetch_add |
| 1251 | #define atomic64_fetch_add_relaxed atomic64_fetch_add |
| 1252 | #else /* atomic64_fetch_add_relaxed */ |
| 1253 | |
| 1254 | #ifndef atomic64_fetch_add_acquire |
| 1255 | static inline s64 |
| 1256 | atomic64_fetch_add_acquire(s64 i, atomic64_t *v) |
| 1257 | { |
| 1258 | s64 ret = atomic64_fetch_add_relaxed(i, v); |
| 1259 | __atomic_acquire_fence(); |
| 1260 | return ret; |
| 1261 | } |
| 1262 | #define atomic64_fetch_add_acquire atomic64_fetch_add_acquire |
| 1263 | #endif |
| 1264 | |
| 1265 | #ifndef atomic64_fetch_add_release |
| 1266 | static inline s64 |
| 1267 | atomic64_fetch_add_release(s64 i, atomic64_t *v) |
| 1268 | { |
| 1269 | __atomic_release_fence(); |
| 1270 | return atomic64_fetch_add_relaxed(i, v); |
| 1271 | } |
| 1272 | #define atomic64_fetch_add_release atomic64_fetch_add_release |
| 1273 | #endif |
| 1274 | |
| 1275 | #ifndef atomic64_fetch_add |
| 1276 | static inline s64 |
| 1277 | atomic64_fetch_add(s64 i, atomic64_t *v) |
| 1278 | { |
| 1279 | s64 ret; |
| 1280 | __atomic_pre_full_fence(); |
| 1281 | ret = atomic64_fetch_add_relaxed(i, v); |
| 1282 | __atomic_post_full_fence(); |
| 1283 | return ret; |
| 1284 | } |
| 1285 | #define atomic64_fetch_add atomic64_fetch_add |
| 1286 | #endif |
| 1287 | |
| 1288 | #endif /* atomic64_fetch_add_relaxed */ |
| 1289 | |
| 1290 | #ifndef atomic64_sub_return_relaxed |
| 1291 | #define atomic64_sub_return_acquire atomic64_sub_return |
| 1292 | #define atomic64_sub_return_release atomic64_sub_return |
| 1293 | #define atomic64_sub_return_relaxed atomic64_sub_return |
| 1294 | #else /* atomic64_sub_return_relaxed */ |
| 1295 | |
| 1296 | #ifndef atomic64_sub_return_acquire |
| 1297 | static inline s64 |
| 1298 | atomic64_sub_return_acquire(s64 i, atomic64_t *v) |
| 1299 | { |
| 1300 | s64 ret = atomic64_sub_return_relaxed(i, v); |
| 1301 | __atomic_acquire_fence(); |
| 1302 | return ret; |
| 1303 | } |
| 1304 | #define atomic64_sub_return_acquire atomic64_sub_return_acquire |
| 1305 | #endif |
| 1306 | |
| 1307 | #ifndef atomic64_sub_return_release |
| 1308 | static inline s64 |
| 1309 | atomic64_sub_return_release(s64 i, atomic64_t *v) |
| 1310 | { |
| 1311 | __atomic_release_fence(); |
| 1312 | return atomic64_sub_return_relaxed(i, v); |
| 1313 | } |
| 1314 | #define atomic64_sub_return_release atomic64_sub_return_release |
| 1315 | #endif |
| 1316 | |
| 1317 | #ifndef atomic64_sub_return |
| 1318 | static inline s64 |
| 1319 | atomic64_sub_return(s64 i, atomic64_t *v) |
| 1320 | { |
| 1321 | s64 ret; |
| 1322 | __atomic_pre_full_fence(); |
| 1323 | ret = atomic64_sub_return_relaxed(i, v); |
| 1324 | __atomic_post_full_fence(); |
| 1325 | return ret; |
| 1326 | } |
| 1327 | #define atomic64_sub_return atomic64_sub_return |
| 1328 | #endif |
| 1329 | |
| 1330 | #endif /* atomic64_sub_return_relaxed */ |
| 1331 | |
| 1332 | #ifndef atomic64_fetch_sub_relaxed |
| 1333 | #define atomic64_fetch_sub_acquire atomic64_fetch_sub |
| 1334 | #define atomic64_fetch_sub_release atomic64_fetch_sub |
| 1335 | #define atomic64_fetch_sub_relaxed atomic64_fetch_sub |
| 1336 | #else /* atomic64_fetch_sub_relaxed */ |
| 1337 | |
| 1338 | #ifndef atomic64_fetch_sub_acquire |
| 1339 | static inline s64 |
| 1340 | atomic64_fetch_sub_acquire(s64 i, atomic64_t *v) |
| 1341 | { |
| 1342 | s64 ret = atomic64_fetch_sub_relaxed(i, v); |
| 1343 | __atomic_acquire_fence(); |
| 1344 | return ret; |
| 1345 | } |
| 1346 | #define atomic64_fetch_sub_acquire atomic64_fetch_sub_acquire |
| 1347 | #endif |
| 1348 | |
| 1349 | #ifndef atomic64_fetch_sub_release |
| 1350 | static inline s64 |
| 1351 | atomic64_fetch_sub_release(s64 i, atomic64_t *v) |
| 1352 | { |
| 1353 | __atomic_release_fence(); |
| 1354 | return atomic64_fetch_sub_relaxed(i, v); |
| 1355 | } |
| 1356 | #define atomic64_fetch_sub_release atomic64_fetch_sub_release |
| 1357 | #endif |
| 1358 | |
| 1359 | #ifndef atomic64_fetch_sub |
| 1360 | static inline s64 |
| 1361 | atomic64_fetch_sub(s64 i, atomic64_t *v) |
| 1362 | { |
| 1363 | s64 ret; |
| 1364 | __atomic_pre_full_fence(); |
| 1365 | ret = atomic64_fetch_sub_relaxed(i, v); |
| 1366 | __atomic_post_full_fence(); |
| 1367 | return ret; |
| 1368 | } |
| 1369 | #define atomic64_fetch_sub atomic64_fetch_sub |
| 1370 | #endif |
| 1371 | |
| 1372 | #endif /* atomic64_fetch_sub_relaxed */ |
| 1373 | |
| 1374 | #ifndef atomic64_inc |
| 1375 | static inline void |
| 1376 | atomic64_inc(atomic64_t *v) |
| 1377 | { |
| 1378 | atomic64_add(1, v); |
| 1379 | } |
| 1380 | #define atomic64_inc atomic64_inc |
| 1381 | #endif |
| 1382 | |
| 1383 | #ifndef atomic64_inc_return_relaxed |
| 1384 | #ifdef atomic64_inc_return |
| 1385 | #define atomic64_inc_return_acquire atomic64_inc_return |
| 1386 | #define atomic64_inc_return_release atomic64_inc_return |
| 1387 | #define atomic64_inc_return_relaxed atomic64_inc_return |
| 1388 | #endif /* atomic64_inc_return */ |
| 1389 | |
| 1390 | #ifndef atomic64_inc_return |
| 1391 | static inline s64 |
| 1392 | atomic64_inc_return(atomic64_t *v) |
| 1393 | { |
| 1394 | return atomic64_add_return(1, v); |
| 1395 | } |
| 1396 | #define atomic64_inc_return atomic64_inc_return |
| 1397 | #endif |
| 1398 | |
| 1399 | #ifndef atomic64_inc_return_acquire |
| 1400 | static inline s64 |
| 1401 | atomic64_inc_return_acquire(atomic64_t *v) |
| 1402 | { |
| 1403 | return atomic64_add_return_acquire(1, v); |
| 1404 | } |
| 1405 | #define atomic64_inc_return_acquire atomic64_inc_return_acquire |
| 1406 | #endif |
| 1407 | |
| 1408 | #ifndef atomic64_inc_return_release |
| 1409 | static inline s64 |
| 1410 | atomic64_inc_return_release(atomic64_t *v) |
| 1411 | { |
| 1412 | return atomic64_add_return_release(1, v); |
| 1413 | } |
| 1414 | #define atomic64_inc_return_release atomic64_inc_return_release |
| 1415 | #endif |
| 1416 | |
| 1417 | #ifndef atomic64_inc_return_relaxed |
| 1418 | static inline s64 |
| 1419 | atomic64_inc_return_relaxed(atomic64_t *v) |
| 1420 | { |
| 1421 | return atomic64_add_return_relaxed(1, v); |
| 1422 | } |
| 1423 | #define atomic64_inc_return_relaxed atomic64_inc_return_relaxed |
| 1424 | #endif |
| 1425 | |
| 1426 | #else /* atomic64_inc_return_relaxed */ |
| 1427 | |
| 1428 | #ifndef atomic64_inc_return_acquire |
| 1429 | static inline s64 |
| 1430 | atomic64_inc_return_acquire(atomic64_t *v) |
| 1431 | { |
| 1432 | s64 ret = atomic64_inc_return_relaxed(v); |
| 1433 | __atomic_acquire_fence(); |
| 1434 | return ret; |
| 1435 | } |
| 1436 | #define atomic64_inc_return_acquire atomic64_inc_return_acquire |
| 1437 | #endif |
| 1438 | |
| 1439 | #ifndef atomic64_inc_return_release |
| 1440 | static inline s64 |
| 1441 | atomic64_inc_return_release(atomic64_t *v) |
| 1442 | { |
| 1443 | __atomic_release_fence(); |
| 1444 | return atomic64_inc_return_relaxed(v); |
| 1445 | } |
| 1446 | #define atomic64_inc_return_release atomic64_inc_return_release |
| 1447 | #endif |
| 1448 | |
| 1449 | #ifndef atomic64_inc_return |
| 1450 | static inline s64 |
| 1451 | atomic64_inc_return(atomic64_t *v) |
| 1452 | { |
| 1453 | s64 ret; |
| 1454 | __atomic_pre_full_fence(); |
| 1455 | ret = atomic64_inc_return_relaxed(v); |
| 1456 | __atomic_post_full_fence(); |
| 1457 | return ret; |
| 1458 | } |
| 1459 | #define atomic64_inc_return atomic64_inc_return |
| 1460 | #endif |
| 1461 | |
| 1462 | #endif /* atomic64_inc_return_relaxed */ |
| 1463 | |
| 1464 | #ifndef atomic64_fetch_inc_relaxed |
| 1465 | #ifdef atomic64_fetch_inc |
| 1466 | #define atomic64_fetch_inc_acquire atomic64_fetch_inc |
| 1467 | #define atomic64_fetch_inc_release atomic64_fetch_inc |
| 1468 | #define atomic64_fetch_inc_relaxed atomic64_fetch_inc |
| 1469 | #endif /* atomic64_fetch_inc */ |
| 1470 | |
| 1471 | #ifndef atomic64_fetch_inc |
| 1472 | static inline s64 |
| 1473 | atomic64_fetch_inc(atomic64_t *v) |
| 1474 | { |
| 1475 | return atomic64_fetch_add(1, v); |
| 1476 | } |
| 1477 | #define atomic64_fetch_inc atomic64_fetch_inc |
| 1478 | #endif |
| 1479 | |
| 1480 | #ifndef atomic64_fetch_inc_acquire |
| 1481 | static inline s64 |
| 1482 | atomic64_fetch_inc_acquire(atomic64_t *v) |
| 1483 | { |
| 1484 | return atomic64_fetch_add_acquire(1, v); |
| 1485 | } |
| 1486 | #define atomic64_fetch_inc_acquire atomic64_fetch_inc_acquire |
| 1487 | #endif |
| 1488 | |
| 1489 | #ifndef atomic64_fetch_inc_release |
| 1490 | static inline s64 |
| 1491 | atomic64_fetch_inc_release(atomic64_t *v) |
| 1492 | { |
| 1493 | return atomic64_fetch_add_release(1, v); |
| 1494 | } |
| 1495 | #define atomic64_fetch_inc_release atomic64_fetch_inc_release |
| 1496 | #endif |
| 1497 | |
| 1498 | #ifndef atomic64_fetch_inc_relaxed |
| 1499 | static inline s64 |
| 1500 | atomic64_fetch_inc_relaxed(atomic64_t *v) |
| 1501 | { |
| 1502 | return atomic64_fetch_add_relaxed(1, v); |
| 1503 | } |
| 1504 | #define atomic64_fetch_inc_relaxed atomic64_fetch_inc_relaxed |
| 1505 | #endif |
| 1506 | |
| 1507 | #else /* atomic64_fetch_inc_relaxed */ |
| 1508 | |
| 1509 | #ifndef atomic64_fetch_inc_acquire |
| 1510 | static inline s64 |
| 1511 | atomic64_fetch_inc_acquire(atomic64_t *v) |
| 1512 | { |
| 1513 | s64 ret = atomic64_fetch_inc_relaxed(v); |
| 1514 | __atomic_acquire_fence(); |
| 1515 | return ret; |
| 1516 | } |
| 1517 | #define atomic64_fetch_inc_acquire atomic64_fetch_inc_acquire |
| 1518 | #endif |
| 1519 | |
| 1520 | #ifndef atomic64_fetch_inc_release |
| 1521 | static inline s64 |
| 1522 | atomic64_fetch_inc_release(atomic64_t *v) |
| 1523 | { |
| 1524 | __atomic_release_fence(); |
| 1525 | return atomic64_fetch_inc_relaxed(v); |
| 1526 | } |
| 1527 | #define atomic64_fetch_inc_release atomic64_fetch_inc_release |
| 1528 | #endif |
| 1529 | |
| 1530 | #ifndef atomic64_fetch_inc |
| 1531 | static inline s64 |
| 1532 | atomic64_fetch_inc(atomic64_t *v) |
| 1533 | { |
| 1534 | s64 ret; |
| 1535 | __atomic_pre_full_fence(); |
| 1536 | ret = atomic64_fetch_inc_relaxed(v); |
| 1537 | __atomic_post_full_fence(); |
| 1538 | return ret; |
| 1539 | } |
| 1540 | #define atomic64_fetch_inc atomic64_fetch_inc |
| 1541 | #endif |
| 1542 | |
| 1543 | #endif /* atomic64_fetch_inc_relaxed */ |
| 1544 | |
| 1545 | #ifndef atomic64_dec |
| 1546 | static inline void |
| 1547 | atomic64_dec(atomic64_t *v) |
| 1548 | { |
| 1549 | atomic64_sub(1, v); |
| 1550 | } |
| 1551 | #define atomic64_dec atomic64_dec |
| 1552 | #endif |
| 1553 | |
| 1554 | #ifndef atomic64_dec_return_relaxed |
| 1555 | #ifdef atomic64_dec_return |
| 1556 | #define atomic64_dec_return_acquire atomic64_dec_return |
| 1557 | #define atomic64_dec_return_release atomic64_dec_return |
| 1558 | #define atomic64_dec_return_relaxed atomic64_dec_return |
| 1559 | #endif /* atomic64_dec_return */ |
| 1560 | |
| 1561 | #ifndef atomic64_dec_return |
| 1562 | static inline s64 |
| 1563 | atomic64_dec_return(atomic64_t *v) |
| 1564 | { |
| 1565 | return atomic64_sub_return(1, v); |
| 1566 | } |
| 1567 | #define atomic64_dec_return atomic64_dec_return |
| 1568 | #endif |
| 1569 | |
| 1570 | #ifndef atomic64_dec_return_acquire |
| 1571 | static inline s64 |
| 1572 | atomic64_dec_return_acquire(atomic64_t *v) |
| 1573 | { |
| 1574 | return atomic64_sub_return_acquire(1, v); |
| 1575 | } |
| 1576 | #define atomic64_dec_return_acquire atomic64_dec_return_acquire |
| 1577 | #endif |
| 1578 | |
| 1579 | #ifndef atomic64_dec_return_release |
| 1580 | static inline s64 |
| 1581 | atomic64_dec_return_release(atomic64_t *v) |
| 1582 | { |
| 1583 | return atomic64_sub_return_release(1, v); |
| 1584 | } |
| 1585 | #define atomic64_dec_return_release atomic64_dec_return_release |
| 1586 | #endif |
| 1587 | |
| 1588 | #ifndef atomic64_dec_return_relaxed |
| 1589 | static inline s64 |
| 1590 | atomic64_dec_return_relaxed(atomic64_t *v) |
| 1591 | { |
| 1592 | return atomic64_sub_return_relaxed(1, v); |
| 1593 | } |
| 1594 | #define atomic64_dec_return_relaxed atomic64_dec_return_relaxed |
| 1595 | #endif |
| 1596 | |
| 1597 | #else /* atomic64_dec_return_relaxed */ |
| 1598 | |
| 1599 | #ifndef atomic64_dec_return_acquire |
| 1600 | static inline s64 |
| 1601 | atomic64_dec_return_acquire(atomic64_t *v) |
| 1602 | { |
| 1603 | s64 ret = atomic64_dec_return_relaxed(v); |
| 1604 | __atomic_acquire_fence(); |
| 1605 | return ret; |
| 1606 | } |
| 1607 | #define atomic64_dec_return_acquire atomic64_dec_return_acquire |
| 1608 | #endif |
| 1609 | |
| 1610 | #ifndef atomic64_dec_return_release |
| 1611 | static inline s64 |
| 1612 | atomic64_dec_return_release(atomic64_t *v) |
| 1613 | { |
| 1614 | __atomic_release_fence(); |
| 1615 | return atomic64_dec_return_relaxed(v); |
| 1616 | } |
| 1617 | #define atomic64_dec_return_release atomic64_dec_return_release |
| 1618 | #endif |
| 1619 | |
| 1620 | #ifndef atomic64_dec_return |
| 1621 | static inline s64 |
| 1622 | atomic64_dec_return(atomic64_t *v) |
| 1623 | { |
| 1624 | s64 ret; |
| 1625 | __atomic_pre_full_fence(); |
| 1626 | ret = atomic64_dec_return_relaxed(v); |
| 1627 | __atomic_post_full_fence(); |
| 1628 | return ret; |
| 1629 | } |
| 1630 | #define atomic64_dec_return atomic64_dec_return |
| 1631 | #endif |
| 1632 | |
| 1633 | #endif /* atomic64_dec_return_relaxed */ |
| 1634 | |
| 1635 | #ifndef atomic64_fetch_dec_relaxed |
| 1636 | #ifdef atomic64_fetch_dec |
| 1637 | #define atomic64_fetch_dec_acquire atomic64_fetch_dec |
| 1638 | #define atomic64_fetch_dec_release atomic64_fetch_dec |
| 1639 | #define atomic64_fetch_dec_relaxed atomic64_fetch_dec |
| 1640 | #endif /* atomic64_fetch_dec */ |
| 1641 | |
| 1642 | #ifndef atomic64_fetch_dec |
| 1643 | static inline s64 |
| 1644 | atomic64_fetch_dec(atomic64_t *v) |
| 1645 | { |
| 1646 | return atomic64_fetch_sub(1, v); |
| 1647 | } |
| 1648 | #define atomic64_fetch_dec atomic64_fetch_dec |
| 1649 | #endif |
| 1650 | |
| 1651 | #ifndef atomic64_fetch_dec_acquire |
| 1652 | static inline s64 |
| 1653 | atomic64_fetch_dec_acquire(atomic64_t *v) |
| 1654 | { |
| 1655 | return atomic64_fetch_sub_acquire(1, v); |
| 1656 | } |
| 1657 | #define atomic64_fetch_dec_acquire atomic64_fetch_dec_acquire |
| 1658 | #endif |
| 1659 | |
| 1660 | #ifndef atomic64_fetch_dec_release |
| 1661 | static inline s64 |
| 1662 | atomic64_fetch_dec_release(atomic64_t *v) |
| 1663 | { |
| 1664 | return atomic64_fetch_sub_release(1, v); |
| 1665 | } |
| 1666 | #define atomic64_fetch_dec_release atomic64_fetch_dec_release |
| 1667 | #endif |
| 1668 | |
| 1669 | #ifndef atomic64_fetch_dec_relaxed |
| 1670 | static inline s64 |
| 1671 | atomic64_fetch_dec_relaxed(atomic64_t *v) |
| 1672 | { |
| 1673 | return atomic64_fetch_sub_relaxed(1, v); |
| 1674 | } |
| 1675 | #define atomic64_fetch_dec_relaxed atomic64_fetch_dec_relaxed |
| 1676 | #endif |
| 1677 | |
| 1678 | #else /* atomic64_fetch_dec_relaxed */ |
| 1679 | |
| 1680 | #ifndef atomic64_fetch_dec_acquire |
| 1681 | static inline s64 |
| 1682 | atomic64_fetch_dec_acquire(atomic64_t *v) |
| 1683 | { |
| 1684 | s64 ret = atomic64_fetch_dec_relaxed(v); |
| 1685 | __atomic_acquire_fence(); |
| 1686 | return ret; |
| 1687 | } |
| 1688 | #define atomic64_fetch_dec_acquire atomic64_fetch_dec_acquire |
| 1689 | #endif |
| 1690 | |
| 1691 | #ifndef atomic64_fetch_dec_release |
| 1692 | static inline s64 |
| 1693 | atomic64_fetch_dec_release(atomic64_t *v) |
| 1694 | { |
| 1695 | __atomic_release_fence(); |
| 1696 | return atomic64_fetch_dec_relaxed(v); |
| 1697 | } |
| 1698 | #define atomic64_fetch_dec_release atomic64_fetch_dec_release |
| 1699 | #endif |
| 1700 | |
| 1701 | #ifndef atomic64_fetch_dec |
| 1702 | static inline s64 |
| 1703 | atomic64_fetch_dec(atomic64_t *v) |
| 1704 | { |
| 1705 | s64 ret; |
| 1706 | __atomic_pre_full_fence(); |
| 1707 | ret = atomic64_fetch_dec_relaxed(v); |
| 1708 | __atomic_post_full_fence(); |
| 1709 | return ret; |
| 1710 | } |
| 1711 | #define atomic64_fetch_dec atomic64_fetch_dec |
| 1712 | #endif |
| 1713 | |
| 1714 | #endif /* atomic64_fetch_dec_relaxed */ |
| 1715 | |
| 1716 | #ifndef atomic64_fetch_and_relaxed |
| 1717 | #define atomic64_fetch_and_acquire atomic64_fetch_and |
| 1718 | #define atomic64_fetch_and_release atomic64_fetch_and |
| 1719 | #define atomic64_fetch_and_relaxed atomic64_fetch_and |
| 1720 | #else /* atomic64_fetch_and_relaxed */ |
| 1721 | |
| 1722 | #ifndef atomic64_fetch_and_acquire |
| 1723 | static inline s64 |
| 1724 | atomic64_fetch_and_acquire(s64 i, atomic64_t *v) |
| 1725 | { |
| 1726 | s64 ret = atomic64_fetch_and_relaxed(i, v); |
| 1727 | __atomic_acquire_fence(); |
| 1728 | return ret; |
| 1729 | } |
| 1730 | #define atomic64_fetch_and_acquire atomic64_fetch_and_acquire |
| 1731 | #endif |
| 1732 | |
| 1733 | #ifndef atomic64_fetch_and_release |
| 1734 | static inline s64 |
| 1735 | atomic64_fetch_and_release(s64 i, atomic64_t *v) |
| 1736 | { |
| 1737 | __atomic_release_fence(); |
| 1738 | return atomic64_fetch_and_relaxed(i, v); |
| 1739 | } |
| 1740 | #define atomic64_fetch_and_release atomic64_fetch_and_release |
| 1741 | #endif |
| 1742 | |
| 1743 | #ifndef atomic64_fetch_and |
| 1744 | static inline s64 |
| 1745 | atomic64_fetch_and(s64 i, atomic64_t *v) |
| 1746 | { |
| 1747 | s64 ret; |
| 1748 | __atomic_pre_full_fence(); |
| 1749 | ret = atomic64_fetch_and_relaxed(i, v); |
| 1750 | __atomic_post_full_fence(); |
| 1751 | return ret; |
| 1752 | } |
| 1753 | #define atomic64_fetch_and atomic64_fetch_and |
| 1754 | #endif |
| 1755 | |
| 1756 | #endif /* atomic64_fetch_and_relaxed */ |
| 1757 | |
| 1758 | #ifndef atomic64_andnot |
| 1759 | static inline void |
| 1760 | atomic64_andnot(s64 i, atomic64_t *v) |
| 1761 | { |
| 1762 | atomic64_and(~i, v); |
| 1763 | } |
| 1764 | #define atomic64_andnot atomic64_andnot |
| 1765 | #endif |
| 1766 | |
| 1767 | #ifndef atomic64_fetch_andnot_relaxed |
| 1768 | #ifdef atomic64_fetch_andnot |
| 1769 | #define atomic64_fetch_andnot_acquire atomic64_fetch_andnot |
| 1770 | #define atomic64_fetch_andnot_release atomic64_fetch_andnot |
| 1771 | #define atomic64_fetch_andnot_relaxed atomic64_fetch_andnot |
| 1772 | #endif /* atomic64_fetch_andnot */ |
| 1773 | |
| 1774 | #ifndef atomic64_fetch_andnot |
| 1775 | static inline s64 |
| 1776 | atomic64_fetch_andnot(s64 i, atomic64_t *v) |
| 1777 | { |
| 1778 | return atomic64_fetch_and(~i, v); |
| 1779 | } |
| 1780 | #define atomic64_fetch_andnot atomic64_fetch_andnot |
| 1781 | #endif |
| 1782 | |
| 1783 | #ifndef atomic64_fetch_andnot_acquire |
| 1784 | static inline s64 |
| 1785 | atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v) |
| 1786 | { |
| 1787 | return atomic64_fetch_and_acquire(~i, v); |
| 1788 | } |
| 1789 | #define atomic64_fetch_andnot_acquire atomic64_fetch_andnot_acquire |
| 1790 | #endif |
| 1791 | |
| 1792 | #ifndef atomic64_fetch_andnot_release |
| 1793 | static inline s64 |
| 1794 | atomic64_fetch_andnot_release(s64 i, atomic64_t *v) |
| 1795 | { |
| 1796 | return atomic64_fetch_and_release(~i, v); |
| 1797 | } |
| 1798 | #define atomic64_fetch_andnot_release atomic64_fetch_andnot_release |
| 1799 | #endif |
| 1800 | |
| 1801 | #ifndef atomic64_fetch_andnot_relaxed |
| 1802 | static inline s64 |
| 1803 | atomic64_fetch_andnot_relaxed(s64 i, atomic64_t *v) |
| 1804 | { |
| 1805 | return atomic64_fetch_and_relaxed(~i, v); |
| 1806 | } |
| 1807 | #define atomic64_fetch_andnot_relaxed atomic64_fetch_andnot_relaxed |
| 1808 | #endif |
| 1809 | |
| 1810 | #else /* atomic64_fetch_andnot_relaxed */ |
| 1811 | |
| 1812 | #ifndef atomic64_fetch_andnot_acquire |
| 1813 | static inline s64 |
| 1814 | atomic64_fetch_andnot_acquire(s64 i, atomic64_t *v) |
| 1815 | { |
| 1816 | s64 ret = atomic64_fetch_andnot_relaxed(i, v); |
| 1817 | __atomic_acquire_fence(); |
| 1818 | return ret; |
| 1819 | } |
| 1820 | #define atomic64_fetch_andnot_acquire atomic64_fetch_andnot_acquire |
| 1821 | #endif |
| 1822 | |
| 1823 | #ifndef atomic64_fetch_andnot_release |
| 1824 | static inline s64 |
| 1825 | atomic64_fetch_andnot_release(s64 i, atomic64_t *v) |
| 1826 | { |
| 1827 | __atomic_release_fence(); |
| 1828 | return atomic64_fetch_andnot_relaxed(i, v); |
| 1829 | } |
| 1830 | #define atomic64_fetch_andnot_release atomic64_fetch_andnot_release |
| 1831 | #endif |
| 1832 | |
| 1833 | #ifndef atomic64_fetch_andnot |
| 1834 | static inline s64 |
| 1835 | atomic64_fetch_andnot(s64 i, atomic64_t *v) |
| 1836 | { |
| 1837 | s64 ret; |
| 1838 | __atomic_pre_full_fence(); |
| 1839 | ret = atomic64_fetch_andnot_relaxed(i, v); |
| 1840 | __atomic_post_full_fence(); |
| 1841 | return ret; |
| 1842 | } |
| 1843 | #define atomic64_fetch_andnot atomic64_fetch_andnot |
| 1844 | #endif |
| 1845 | |
| 1846 | #endif /* atomic64_fetch_andnot_relaxed */ |
| 1847 | |
| 1848 | #ifndef atomic64_fetch_or_relaxed |
| 1849 | #define atomic64_fetch_or_acquire atomic64_fetch_or |
| 1850 | #define atomic64_fetch_or_release atomic64_fetch_or |
| 1851 | #define atomic64_fetch_or_relaxed atomic64_fetch_or |
| 1852 | #else /* atomic64_fetch_or_relaxed */ |
| 1853 | |
| 1854 | #ifndef atomic64_fetch_or_acquire |
| 1855 | static inline s64 |
| 1856 | atomic64_fetch_or_acquire(s64 i, atomic64_t *v) |
| 1857 | { |
| 1858 | s64 ret = atomic64_fetch_or_relaxed(i, v); |
| 1859 | __atomic_acquire_fence(); |
| 1860 | return ret; |
| 1861 | } |
| 1862 | #define atomic64_fetch_or_acquire atomic64_fetch_or_acquire |
| 1863 | #endif |
| 1864 | |
| 1865 | #ifndef atomic64_fetch_or_release |
| 1866 | static inline s64 |
| 1867 | atomic64_fetch_or_release(s64 i, atomic64_t *v) |
| 1868 | { |
| 1869 | __atomic_release_fence(); |
| 1870 | return atomic64_fetch_or_relaxed(i, v); |
| 1871 | } |
| 1872 | #define atomic64_fetch_or_release atomic64_fetch_or_release |
| 1873 | #endif |
| 1874 | |
| 1875 | #ifndef atomic64_fetch_or |
| 1876 | static inline s64 |
| 1877 | atomic64_fetch_or(s64 i, atomic64_t *v) |
| 1878 | { |
| 1879 | s64 ret; |
| 1880 | __atomic_pre_full_fence(); |
| 1881 | ret = atomic64_fetch_or_relaxed(i, v); |
| 1882 | __atomic_post_full_fence(); |
| 1883 | return ret; |
| 1884 | } |
| 1885 | #define atomic64_fetch_or atomic64_fetch_or |
| 1886 | #endif |
| 1887 | |
| 1888 | #endif /* atomic64_fetch_or_relaxed */ |
| 1889 | |
| 1890 | #ifndef atomic64_fetch_xor_relaxed |
| 1891 | #define atomic64_fetch_xor_acquire atomic64_fetch_xor |
| 1892 | #define atomic64_fetch_xor_release atomic64_fetch_xor |
| 1893 | #define atomic64_fetch_xor_relaxed atomic64_fetch_xor |
| 1894 | #else /* atomic64_fetch_xor_relaxed */ |
| 1895 | |
| 1896 | #ifndef atomic64_fetch_xor_acquire |
| 1897 | static inline s64 |
| 1898 | atomic64_fetch_xor_acquire(s64 i, atomic64_t *v) |
| 1899 | { |
| 1900 | s64 ret = atomic64_fetch_xor_relaxed(i, v); |
| 1901 | __atomic_acquire_fence(); |
| 1902 | return ret; |
| 1903 | } |
| 1904 | #define atomic64_fetch_xor_acquire atomic64_fetch_xor_acquire |
| 1905 | #endif |
| 1906 | |
| 1907 | #ifndef atomic64_fetch_xor_release |
| 1908 | static inline s64 |
| 1909 | atomic64_fetch_xor_release(s64 i, atomic64_t *v) |
| 1910 | { |
| 1911 | __atomic_release_fence(); |
| 1912 | return atomic64_fetch_xor_relaxed(i, v); |
| 1913 | } |
| 1914 | #define atomic64_fetch_xor_release atomic64_fetch_xor_release |
| 1915 | #endif |
| 1916 | |
| 1917 | #ifndef atomic64_fetch_xor |
| 1918 | static inline s64 |
| 1919 | atomic64_fetch_xor(s64 i, atomic64_t *v) |
| 1920 | { |
| 1921 | s64 ret; |
| 1922 | __atomic_pre_full_fence(); |
| 1923 | ret = atomic64_fetch_xor_relaxed(i, v); |
| 1924 | __atomic_post_full_fence(); |
| 1925 | return ret; |
| 1926 | } |
| 1927 | #define atomic64_fetch_xor atomic64_fetch_xor |
| 1928 | #endif |
| 1929 | |
| 1930 | #endif /* atomic64_fetch_xor_relaxed */ |
| 1931 | |
| 1932 | #ifndef atomic64_xchg_relaxed |
| 1933 | #define atomic64_xchg_acquire atomic64_xchg |
| 1934 | #define atomic64_xchg_release atomic64_xchg |
| 1935 | #define atomic64_xchg_relaxed atomic64_xchg |
| 1936 | #else /* atomic64_xchg_relaxed */ |
| 1937 | |
| 1938 | #ifndef atomic64_xchg_acquire |
| 1939 | static inline s64 |
| 1940 | atomic64_xchg_acquire(atomic64_t *v, s64 i) |
| 1941 | { |
| 1942 | s64 ret = atomic64_xchg_relaxed(v, i); |
| 1943 | __atomic_acquire_fence(); |
| 1944 | return ret; |
| 1945 | } |
| 1946 | #define atomic64_xchg_acquire atomic64_xchg_acquire |
| 1947 | #endif |
| 1948 | |
| 1949 | #ifndef atomic64_xchg_release |
| 1950 | static inline s64 |
| 1951 | atomic64_xchg_release(atomic64_t *v, s64 i) |
| 1952 | { |
| 1953 | __atomic_release_fence(); |
| 1954 | return atomic64_xchg_relaxed(v, i); |
| 1955 | } |
| 1956 | #define atomic64_xchg_release atomic64_xchg_release |
| 1957 | #endif |
| 1958 | |
| 1959 | #ifndef atomic64_xchg |
| 1960 | static inline s64 |
| 1961 | atomic64_xchg(atomic64_t *v, s64 i) |
| 1962 | { |
| 1963 | s64 ret; |
| 1964 | __atomic_pre_full_fence(); |
| 1965 | ret = atomic64_xchg_relaxed(v, i); |
| 1966 | __atomic_post_full_fence(); |
| 1967 | return ret; |
| 1968 | } |
| 1969 | #define atomic64_xchg atomic64_xchg |
| 1970 | #endif |
| 1971 | |
| 1972 | #endif /* atomic64_xchg_relaxed */ |
| 1973 | |
| 1974 | #ifndef atomic64_cmpxchg_relaxed |
| 1975 | #define atomic64_cmpxchg_acquire atomic64_cmpxchg |
| 1976 | #define atomic64_cmpxchg_release atomic64_cmpxchg |
| 1977 | #define atomic64_cmpxchg_relaxed atomic64_cmpxchg |
| 1978 | #else /* atomic64_cmpxchg_relaxed */ |
| 1979 | |
| 1980 | #ifndef atomic64_cmpxchg_acquire |
| 1981 | static inline s64 |
| 1982 | atomic64_cmpxchg_acquire(atomic64_t *v, s64 old, s64 new) |
| 1983 | { |
| 1984 | s64 ret = atomic64_cmpxchg_relaxed(v, old, new); |
| 1985 | __atomic_acquire_fence(); |
| 1986 | return ret; |
| 1987 | } |
| 1988 | #define atomic64_cmpxchg_acquire atomic64_cmpxchg_acquire |
| 1989 | #endif |
| 1990 | |
| 1991 | #ifndef atomic64_cmpxchg_release |
| 1992 | static inline s64 |
| 1993 | atomic64_cmpxchg_release(atomic64_t *v, s64 old, s64 new) |
| 1994 | { |
| 1995 | __atomic_release_fence(); |
| 1996 | return atomic64_cmpxchg_relaxed(v, old, new); |
| 1997 | } |
| 1998 | #define atomic64_cmpxchg_release atomic64_cmpxchg_release |
| 1999 | #endif |
| 2000 | |
| 2001 | #ifndef atomic64_cmpxchg |
| 2002 | static inline s64 |
| 2003 | atomic64_cmpxchg(atomic64_t *v, s64 old, s64 new) |
| 2004 | { |
| 2005 | s64 ret; |
| 2006 | __atomic_pre_full_fence(); |
| 2007 | ret = atomic64_cmpxchg_relaxed(v, old, new); |
| 2008 | __atomic_post_full_fence(); |
| 2009 | return ret; |
| 2010 | } |
| 2011 | #define atomic64_cmpxchg atomic64_cmpxchg |
| 2012 | #endif |
| 2013 | |
| 2014 | #endif /* atomic64_cmpxchg_relaxed */ |
| 2015 | |
| 2016 | #ifndef atomic64_try_cmpxchg_relaxed |
| 2017 | #ifdef atomic64_try_cmpxchg |
| 2018 | #define atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg |
| 2019 | #define atomic64_try_cmpxchg_release atomic64_try_cmpxchg |
| 2020 | #define atomic64_try_cmpxchg_relaxed atomic64_try_cmpxchg |
| 2021 | #endif /* atomic64_try_cmpxchg */ |
| 2022 | |
| 2023 | #ifndef atomic64_try_cmpxchg |
| 2024 | static inline bool |
| 2025 | atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new) |
| 2026 | { |
| 2027 | s64 r, o = *old; |
| 2028 | r = atomic64_cmpxchg(v, o, new); |
| 2029 | if (unlikely(r != o)) |
| 2030 | *old = r; |
| 2031 | return likely(r == o); |
| 2032 | } |
| 2033 | #define atomic64_try_cmpxchg atomic64_try_cmpxchg |
| 2034 | #endif |
| 2035 | |
| 2036 | #ifndef atomic64_try_cmpxchg_acquire |
| 2037 | static inline bool |
| 2038 | atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new) |
| 2039 | { |
| 2040 | s64 r, o = *old; |
| 2041 | r = atomic64_cmpxchg_acquire(v, o, new); |
| 2042 | if (unlikely(r != o)) |
| 2043 | *old = r; |
| 2044 | return likely(r == o); |
| 2045 | } |
| 2046 | #define atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg_acquire |
| 2047 | #endif |
| 2048 | |
| 2049 | #ifndef atomic64_try_cmpxchg_release |
| 2050 | static inline bool |
| 2051 | atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new) |
| 2052 | { |
| 2053 | s64 r, o = *old; |
| 2054 | r = atomic64_cmpxchg_release(v, o, new); |
| 2055 | if (unlikely(r != o)) |
| 2056 | *old = r; |
| 2057 | return likely(r == o); |
| 2058 | } |
| 2059 | #define atomic64_try_cmpxchg_release atomic64_try_cmpxchg_release |
| 2060 | #endif |
| 2061 | |
| 2062 | #ifndef atomic64_try_cmpxchg_relaxed |
| 2063 | static inline bool |
| 2064 | atomic64_try_cmpxchg_relaxed(atomic64_t *v, s64 *old, s64 new) |
| 2065 | { |
| 2066 | s64 r, o = *old; |
| 2067 | r = atomic64_cmpxchg_relaxed(v, o, new); |
| 2068 | if (unlikely(r != o)) |
| 2069 | *old = r; |
| 2070 | return likely(r == o); |
| 2071 | } |
| 2072 | #define atomic64_try_cmpxchg_relaxed atomic64_try_cmpxchg_relaxed |
| 2073 | #endif |
| 2074 | |
| 2075 | #else /* atomic64_try_cmpxchg_relaxed */ |
| 2076 | |
| 2077 | #ifndef atomic64_try_cmpxchg_acquire |
| 2078 | static inline bool |
| 2079 | atomic64_try_cmpxchg_acquire(atomic64_t *v, s64 *old, s64 new) |
| 2080 | { |
| 2081 | bool ret = atomic64_try_cmpxchg_relaxed(v, old, new); |
| 2082 | __atomic_acquire_fence(); |
| 2083 | return ret; |
| 2084 | } |
| 2085 | #define atomic64_try_cmpxchg_acquire atomic64_try_cmpxchg_acquire |
| 2086 | #endif |
| 2087 | |
| 2088 | #ifndef atomic64_try_cmpxchg_release |
| 2089 | static inline bool |
| 2090 | atomic64_try_cmpxchg_release(atomic64_t *v, s64 *old, s64 new) |
| 2091 | { |
| 2092 | __atomic_release_fence(); |
| 2093 | return atomic64_try_cmpxchg_relaxed(v, old, new); |
| 2094 | } |
| 2095 | #define atomic64_try_cmpxchg_release atomic64_try_cmpxchg_release |
| 2096 | #endif |
| 2097 | |
| 2098 | #ifndef atomic64_try_cmpxchg |
| 2099 | static inline bool |
| 2100 | atomic64_try_cmpxchg(atomic64_t *v, s64 *old, s64 new) |
| 2101 | { |
| 2102 | bool ret; |
| 2103 | __atomic_pre_full_fence(); |
| 2104 | ret = atomic64_try_cmpxchg_relaxed(v, old, new); |
| 2105 | __atomic_post_full_fence(); |
| 2106 | return ret; |
| 2107 | } |
| 2108 | #define atomic64_try_cmpxchg atomic64_try_cmpxchg |
| 2109 | #endif |
| 2110 | |
| 2111 | #endif /* atomic64_try_cmpxchg_relaxed */ |
| 2112 | |
| 2113 | #ifndef atomic64_sub_and_test |
| 2114 | /** |
| 2115 | * atomic64_sub_and_test - subtract value from variable and test result |
| 2116 | * @i: integer value to subtract |
| 2117 | * @v: pointer of type atomic64_t |
| 2118 | * |
| 2119 | * Atomically subtracts @i from @v and returns |
| 2120 | * true if the result is zero, or false for all |
| 2121 | * other cases. |
| 2122 | */ |
| 2123 | static inline bool |
| 2124 | atomic64_sub_and_test(s64 i, atomic64_t *v) |
| 2125 | { |
| 2126 | return atomic64_sub_return(i, v) == 0; |
| 2127 | } |
| 2128 | #define atomic64_sub_and_test atomic64_sub_and_test |
| 2129 | #endif |
| 2130 | |
| 2131 | #ifndef atomic64_dec_and_test |
| 2132 | /** |
| 2133 | * atomic64_dec_and_test - decrement and test |
| 2134 | * @v: pointer of type atomic64_t |
| 2135 | * |
| 2136 | * Atomically decrements @v by 1 and |
| 2137 | * returns true if the result is 0, or false for all other |
| 2138 | * cases. |
| 2139 | */ |
| 2140 | static inline bool |
| 2141 | atomic64_dec_and_test(atomic64_t *v) |
| 2142 | { |
| 2143 | return atomic64_dec_return(v) == 0; |
| 2144 | } |
| 2145 | #define atomic64_dec_and_test atomic64_dec_and_test |
| 2146 | #endif |
| 2147 | |
| 2148 | #ifndef atomic64_inc_and_test |
| 2149 | /** |
| 2150 | * atomic64_inc_and_test - increment and test |
| 2151 | * @v: pointer of type atomic64_t |
| 2152 | * |
| 2153 | * Atomically increments @v by 1 |
| 2154 | * and returns true if the result is zero, or false for all |
| 2155 | * other cases. |
| 2156 | */ |
| 2157 | static inline bool |
| 2158 | atomic64_inc_and_test(atomic64_t *v) |
| 2159 | { |
| 2160 | return atomic64_inc_return(v) == 0; |
| 2161 | } |
| 2162 | #define atomic64_inc_and_test atomic64_inc_and_test |
| 2163 | #endif |
| 2164 | |
| 2165 | #ifndef atomic64_add_negative |
| 2166 | /** |
| 2167 | * atomic64_add_negative - add and test if negative |
| 2168 | * @i: integer value to add |
| 2169 | * @v: pointer of type atomic64_t |
| 2170 | * |
| 2171 | * Atomically adds @i to @v and returns true |
| 2172 | * if the result is negative, or false when |
| 2173 | * result is greater than or equal to zero. |
| 2174 | */ |
| 2175 | static inline bool |
| 2176 | atomic64_add_negative(s64 i, atomic64_t *v) |
| 2177 | { |
| 2178 | return atomic64_add_return(i, v) < 0; |
| 2179 | } |
| 2180 | #define atomic64_add_negative atomic64_add_negative |
| 2181 | #endif |
| 2182 | |
| 2183 | #ifndef atomic64_fetch_add_unless |
| 2184 | /** |
| 2185 | * atomic64_fetch_add_unless - add unless the number is already a given value |
| 2186 | * @v: pointer of type atomic64_t |
| 2187 | * @a: the amount to add to v... |
| 2188 | * @u: ...unless v is equal to u. |
| 2189 | * |
| 2190 | * Atomically adds @a to @v, so long as @v was not already @u. |
| 2191 | * Returns original value of @v |
| 2192 | */ |
| 2193 | static inline s64 |
| 2194 | atomic64_fetch_add_unless(atomic64_t *v, s64 a, s64 u) |
| 2195 | { |
| 2196 | s64 c = atomic64_read(v); |
| 2197 | |
| 2198 | do { |
| 2199 | if (unlikely(c == u)) |
| 2200 | break; |
| 2201 | } while (!atomic64_try_cmpxchg(v, &c, c + a)); |
| 2202 | |
| 2203 | return c; |
| 2204 | } |
| 2205 | #define atomic64_fetch_add_unless atomic64_fetch_add_unless |
| 2206 | #endif |
| 2207 | |
| 2208 | #ifndef atomic64_add_unless |
| 2209 | /** |
| 2210 | * atomic64_add_unless - add unless the number is already a given value |
| 2211 | * @v: pointer of type atomic64_t |
| 2212 | * @a: the amount to add to v... |
| 2213 | * @u: ...unless v is equal to u. |
| 2214 | * |
| 2215 | * Atomically adds @a to @v, if @v was not already @u. |
| 2216 | * Returns true if the addition was done. |
| 2217 | */ |
| 2218 | static inline bool |
| 2219 | atomic64_add_unless(atomic64_t *v, s64 a, s64 u) |
| 2220 | { |
| 2221 | return atomic64_fetch_add_unless(v, a, u) != u; |
| 2222 | } |
| 2223 | #define atomic64_add_unless atomic64_add_unless |
| 2224 | #endif |
| 2225 | |
| 2226 | #ifndef atomic64_inc_not_zero |
| 2227 | /** |
| 2228 | * atomic64_inc_not_zero - increment unless the number is zero |
| 2229 | * @v: pointer of type atomic64_t |
| 2230 | * |
| 2231 | * Atomically increments @v by 1, if @v is non-zero. |
| 2232 | * Returns true if the increment was done. |
| 2233 | */ |
| 2234 | static inline bool |
| 2235 | atomic64_inc_not_zero(atomic64_t *v) |
| 2236 | { |
| 2237 | return atomic64_add_unless(v, 1, 0); |
| 2238 | } |
| 2239 | #define atomic64_inc_not_zero atomic64_inc_not_zero |
| 2240 | #endif |
| 2241 | |
| 2242 | #ifndef atomic64_inc_unless_negative |
| 2243 | static inline bool |
| 2244 | atomic64_inc_unless_negative(atomic64_t *v) |
| 2245 | { |
| 2246 | s64 c = atomic64_read(v); |
| 2247 | |
| 2248 | do { |
| 2249 | if (unlikely(c < 0)) |
| 2250 | return false; |
| 2251 | } while (!atomic64_try_cmpxchg(v, &c, c + 1)); |
| 2252 | |
| 2253 | return true; |
| 2254 | } |
| 2255 | #define atomic64_inc_unless_negative atomic64_inc_unless_negative |
| 2256 | #endif |
| 2257 | |
| 2258 | #ifndef atomic64_dec_unless_positive |
| 2259 | static inline bool |
| 2260 | atomic64_dec_unless_positive(atomic64_t *v) |
| 2261 | { |
| 2262 | s64 c = atomic64_read(v); |
| 2263 | |
| 2264 | do { |
| 2265 | if (unlikely(c > 0)) |
| 2266 | return false; |
| 2267 | } while (!atomic64_try_cmpxchg(v, &c, c - 1)); |
| 2268 | |
| 2269 | return true; |
| 2270 | } |
| 2271 | #define atomic64_dec_unless_positive atomic64_dec_unless_positive |
| 2272 | #endif |
| 2273 | |
| 2274 | #ifndef atomic64_dec_if_positive |
| 2275 | static inline s64 |
| 2276 | atomic64_dec_if_positive(atomic64_t *v) |
| 2277 | { |
| 2278 | s64 dec, c = atomic64_read(v); |
| 2279 | |
| 2280 | do { |
| 2281 | dec = c - 1; |
| 2282 | if (unlikely(dec < 0)) |
| 2283 | break; |
| 2284 | } while (!atomic64_try_cmpxchg(v, &c, dec)); |
| 2285 | |
| 2286 | return dec; |
| 2287 | } |
| 2288 | #define atomic64_dec_if_positive atomic64_dec_if_positive |
| 2289 | #endif |
| 2290 | |
| 2291 | #define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c)) |
| 2292 | #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c)) |
| 2293 | |
| 2294 | #endif /* _LINUX_ATOMIC_FALLBACK_H */ |
Mark Rutland | 0cf264b | 2019-02-11 13:20:35 +0000 | [diff] [blame] | 2295 | // 25de4a2804d70f57e994fe3b419148658bb5378a |