Commit | Line | Data |
---|---|---|
2866c82d | 1 | /* |
da751ca9 JA |
2 | * libaio engine |
3 | * | |
4 | * IO engine using the Linux native aio interface. | |
2866c82d JA |
5 | * |
6 | */ | |
2866c82d JA |
7 | #include <stdlib.h> |
8 | #include <unistd.h> | |
9 | #include <errno.h> | |
67bf9823 | 10 | #include <libaio.h> |
46961748 JA |
11 | #include <sys/time.h> |
12 | #include <sys/resource.h> | |
5f350952 JA |
13 | |
14 | #include "../fio.h" | |
0f38bbef | 15 | #include "../lib/pow2.h" |
d220c761 | 16 | #include "../optgroup.h" |
90a8c9b2 | 17 | #include "../lib/memalign.h" |
2866c82d | 18 | |
ee636f3f JA |
19 | #ifndef IOCB_FLAG_HIPRI |
20 | #define IOCB_FLAG_HIPRI (1 << 2) | |
21 | #endif | |
2da0f5d5 | 22 | |
3c3168e9 | 23 | #ifndef IOCTX_FLAG_USERIOCB |
2da0f5d5 JA |
24 | #define IOCTX_FLAG_USERIOCB (1 << 0) |
25 | #endif | |
26 | #ifndef IOCTX_FLAG_IOPOLL | |
27 | #define IOCTX_FLAG_IOPOLL (1 << 1) | |
3c3168e9 | 28 | #endif |
2041bd34 JA |
29 | #ifndef IOCTX_FLAG_FIXEDBUFS |
30 | #define IOCTX_FLAG_FIXEDBUFS (1 << 2) | |
31 | #endif | |
a391d73d | 32 | |
0fc2e103 JA |
33 | static int fio_libaio_commit(struct thread_data *td); |
34 | ||
2866c82d JA |
35 | struct libaio_data { |
36 | io_context_t aio_ctx; | |
37 | struct io_event *aio_events; | |
755200a3 | 38 | struct iocb **iocbs; |
7e77dd02 | 39 | struct io_u **io_us; |
acd45e02 | 40 | |
3c3168e9 JA |
41 | struct iocb *user_iocbs; |
42 | struct io_u **io_u_index; | |
43 | ||
acd45e02 JA |
44 | /* |
45 | * Basic ring buffer. 'head' is incremented in _queue(), and | |
46 | * 'tail' is incremented in _commit(). We keep 'queued' so | |
47 | * that we know if the ring is full or empty, when | |
48 | * 'head' == 'tail'. 'entries' is the ring size, and | |
49 | * 'is_pow2' is just an optimization to use AND instead of | |
50 | * modulus to get the remainder on ring increment. | |
51 | */ | |
52 | int is_pow2; | |
53 | unsigned int entries; | |
54 | unsigned int queued; | |
55 | unsigned int head; | |
56 | unsigned int tail; | |
2866c82d JA |
57 | }; |
58 | ||
de890a1e | 59 | struct libaio_options { |
a1f871c7 | 60 | void *pad; |
de890a1e | 61 | unsigned int userspace_reap; |
a391d73d | 62 | unsigned int hipri; |
3c3168e9 | 63 | unsigned int useriocb; |
2041bd34 | 64 | unsigned int fixedbufs; |
de890a1e SL |
65 | }; |
66 | ||
67 | static struct fio_option options[] = { | |
68 | { | |
69 | .name = "userspace_reap", | |
e8b0e958 | 70 | .lname = "Libaio userspace reaping", |
de890a1e SL |
71 | .type = FIO_OPT_STR_SET, |
72 | .off1 = offsetof(struct libaio_options, userspace_reap), | |
73 | .help = "Use alternative user-space reap implementation", | |
e90a0adf | 74 | .category = FIO_OPT_C_ENGINE, |
5a3cd5f3 | 75 | .group = FIO_OPT_G_LIBAIO, |
de890a1e | 76 | }, |
a391d73d JA |
77 | { |
78 | .name = "hipri", | |
ee636f3f | 79 | .lname = "High Priority", |
a391d73d JA |
80 | .type = FIO_OPT_STR_SET, |
81 | .off1 = offsetof(struct libaio_options, hipri), | |
6acc46d8 | 82 | .help = "Use polled IO completions", |
a391d73d JA |
83 | .category = FIO_OPT_C_ENGINE, |
84 | .group = FIO_OPT_G_LIBAIO, | |
85 | }, | |
3c3168e9 JA |
86 | { |
87 | .name = "useriocb", | |
88 | .lname = "User IOCBs", | |
89 | .type = FIO_OPT_STR_SET, | |
90 | .off1 = offsetof(struct libaio_options, useriocb), | |
91 | .help = "Use user mapped IOCBs", | |
92 | .category = FIO_OPT_C_ENGINE, | |
93 | .group = FIO_OPT_G_LIBAIO, | |
94 | }, | |
2041bd34 JA |
95 | { |
96 | .name = "fixedbufs", | |
97 | .lname = "Fixed (pre-mapped) IO buffers", | |
98 | .type = FIO_OPT_STR_SET, | |
99 | .off1 = offsetof(struct libaio_options, fixedbufs), | |
100 | .help = "Pre map IO buffers", | |
101 | .category = FIO_OPT_C_ENGINE, | |
102 | .group = FIO_OPT_G_LIBAIO, | |
103 | }, | |
de890a1e SL |
104 | { |
105 | .name = NULL, | |
106 | }, | |
107 | }; | |
108 | ||
acd45e02 JA |
109 | static inline void ring_inc(struct libaio_data *ld, unsigned int *val, |
110 | unsigned int add) | |
111 | { | |
112 | if (ld->is_pow2) | |
113 | *val = (*val + add) & (ld->entries - 1); | |
114 | else | |
115 | *val = (*val + add) % ld->entries; | |
116 | } | |
117 | ||
7a16dd02 | 118 | static int fio_libaio_prep(struct thread_data fio_unused *td, struct io_u *io_u) |
2866c82d | 119 | { |
3c3168e9 | 120 | struct libaio_data *ld = td->io_ops_data; |
53cdc686 | 121 | struct fio_file *f = io_u->file; |
a391d73d | 122 | struct libaio_options *o = td->eo; |
3c3168e9 JA |
123 | struct iocb *iocb; |
124 | ||
125 | if (o->useriocb) | |
126 | iocb = &ld->user_iocbs[io_u->index]; | |
127 | else | |
128 | iocb = &io_u->iocb; | |
53cdc686 | 129 | |
a391d73d | 130 | if (io_u->ddir == DDIR_READ) { |
0483fcec JA |
131 | if (o->fixedbufs) { |
132 | iocb->aio_fildes = f->fd; | |
133 | iocb->aio_lio_opcode = IO_CMD_PREAD; | |
134 | iocb->u.c.offset = io_u->offset; | |
6f3a2c11 | 135 | } else { |
0483fcec | 136 | io_prep_pread(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
6f3a2c11 JA |
137 | if (o->hipri) |
138 | iocb->u.c.flags |= IOCB_FLAG_HIPRI; | |
139 | } | |
a391d73d | 140 | } else if (io_u->ddir == DDIR_WRITE) { |
0483fcec JA |
141 | if (o->fixedbufs) { |
142 | iocb->aio_fildes = f->fd; | |
143 | iocb->aio_lio_opcode = IO_CMD_PWRITE; | |
144 | iocb->u.c.offset = io_u->offset; | |
6f3a2c11 | 145 | } else { |
0483fcec | 146 | io_prep_pwrite(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
6f3a2c11 JA |
147 | if (o->hipri) |
148 | iocb->u.c.flags |= IOCB_FLAG_HIPRI; | |
149 | } | |
a391d73d | 150 | } else if (ddir_sync(io_u->ddir)) |
3c3168e9 | 151 | io_prep_fsync(iocb, f->fd); |
2866c82d JA |
152 | |
153 | return 0; | |
154 | } | |
155 | ||
156 | static struct io_u *fio_libaio_event(struct thread_data *td, int event) | |
157 | { | |
565e784d | 158 | struct libaio_data *ld = td->io_ops_data; |
3c3168e9 | 159 | struct libaio_options *o = td->eo; |
f423479d JA |
160 | struct io_event *ev; |
161 | struct io_u *io_u; | |
2866c82d | 162 | |
f423479d | 163 | ev = ld->aio_events + event; |
3c3168e9 JA |
164 | if (o->useriocb) { |
165 | int index = (int) (uintptr_t) ev->obj; | |
166 | io_u = ld->io_u_index[index]; | |
167 | } else | |
168 | io_u = container_of(ev->obj, struct io_u, iocb); | |
f423479d JA |
169 | |
170 | if (ev->res != io_u->xfer_buflen) { | |
171 | if (ev->res > io_u->xfer_buflen) | |
172 | io_u->error = -ev->res; | |
173 | else | |
174 | io_u->resid = io_u->xfer_buflen - ev->res; | |
175 | } else | |
176 | io_u->error = 0; | |
177 | ||
178 | return io_u; | |
2866c82d JA |
179 | } |
180 | ||
675012f0 DE |
181 | struct aio_ring { |
182 | unsigned id; /** kernel internal index number */ | |
183 | unsigned nr; /** number of io_events */ | |
184 | unsigned head; | |
185 | unsigned tail; | |
c44b1ff5 | 186 | |
675012f0 DE |
187 | unsigned magic; |
188 | unsigned compat_features; | |
189 | unsigned incompat_features; | |
190 | unsigned header_length; /** size of aio_ring */ | |
191 | ||
192 | struct io_event events[0]; | |
193 | }; | |
194 | ||
195 | #define AIO_RING_MAGIC 0xa10a10a1 | |
196 | ||
197 | static int user_io_getevents(io_context_t aio_ctx, unsigned int max, | |
c44b1ff5 | 198 | struct io_event *events) |
675012f0 DE |
199 | { |
200 | long i = 0; | |
201 | unsigned head; | |
c44b1ff5 | 202 | struct aio_ring *ring = (struct aio_ring*) aio_ctx; |
675012f0 DE |
203 | |
204 | while (i < max) { | |
205 | head = ring->head; | |
206 | ||
207 | if (head == ring->tail) { | |
208 | /* There are no more completions */ | |
209 | break; | |
210 | } else { | |
211 | /* There is another completion to reap */ | |
212 | events[i] = ring->events[head]; | |
213 | read_barrier(); | |
c44b1ff5 | 214 | ring->head = (head + 1) % ring->nr; |
675012f0 DE |
215 | i++; |
216 | } | |
217 | } | |
218 | ||
219 | return i; | |
220 | } | |
221 | ||
e7d2e616 | 222 | static int fio_libaio_getevents(struct thread_data *td, unsigned int min, |
1f440ece | 223 | unsigned int max, const struct timespec *t) |
2866c82d | 224 | { |
565e784d | 225 | struct libaio_data *ld = td->io_ops_data; |
de890a1e | 226 | struct libaio_options *o = td->eo; |
82407585 | 227 | unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min; |
1f440ece | 228 | struct timespec __lt, *lt = NULL; |
0b7fdba7 | 229 | int r, events = 0; |
2866c82d | 230 | |
1f440ece JA |
231 | if (t) { |
232 | __lt = *t; | |
233 | lt = &__lt; | |
234 | } | |
235 | ||
2866c82d | 236 | do { |
de890a1e | 237 | if (o->userspace_reap == 1 |
675012f0 DE |
238 | && actual_min == 0 |
239 | && ((struct aio_ring *)(ld->aio_ctx))->magic | |
240 | == AIO_RING_MAGIC) { | |
241 | r = user_io_getevents(ld->aio_ctx, max, | |
242 | ld->aio_events + events); | |
243 | } else { | |
244 | r = io_getevents(ld->aio_ctx, actual_min, | |
1f440ece | 245 | max, ld->aio_events + events, lt); |
675012f0 | 246 | } |
3441a52d | 247 | if (r > 0) |
0b7fdba7 | 248 | events += r; |
3441a52d | 249 | else if ((min && r == 0) || r == -EAGAIN) { |
0fc2e103 | 250 | fio_libaio_commit(td); |
6347e43d JA |
251 | if (actual_min) |
252 | usleep(10); | |
0fc2e103 | 253 | } else if (r != -EINTR) |
a31dc2dd | 254 | break; |
0b7fdba7 DE |
255 | } while (events < min); |
256 | ||
257 | return r < 0 ? r : events; | |
2866c82d JA |
258 | } |
259 | ||
2e4ef4fb JA |
260 | static enum fio_q_status fio_libaio_queue(struct thread_data *td, |
261 | struct io_u *io_u) | |
2866c82d | 262 | { |
565e784d | 263 | struct libaio_data *ld = td->io_ops_data; |
3c3168e9 | 264 | struct libaio_options *o = td->eo; |
2866c82d | 265 | |
7101d9c2 JA |
266 | fio_ro_check(td, io_u); |
267 | ||
acd45e02 | 268 | if (ld->queued == td->o.iodepth) |
755200a3 JA |
269 | return FIO_Q_BUSY; |
270 | ||
271 | /* | |
272 | * fsync is tricky, since it can fail and we need to do it | |
273 | * serialized with other io. the reason is that linux doesn't | |
274 | * support aio fsync yet. So return busy for the case where we | |
275 | * have pending io, to let fio complete those first. | |
276 | */ | |
f011531e | 277 | if (ddir_sync(io_u->ddir)) { |
acd45e02 | 278 | if (ld->queued) |
755200a3 | 279 | return FIO_Q_BUSY; |
5f9099ea | 280 | |
f011531e | 281 | do_io_u_sync(td, io_u); |
755200a3 JA |
282 | return FIO_Q_COMPLETED; |
283 | } | |
284 | ||
a5f3027c | 285 | if (io_u->ddir == DDIR_TRIM) { |
acd45e02 | 286 | if (ld->queued) |
a5f3027c JA |
287 | return FIO_Q_BUSY; |
288 | ||
289 | do_io_u_trim(td, io_u); | |
c0681c9d VF |
290 | io_u_mark_submit(td, 1); |
291 | io_u_mark_complete(td, 1); | |
a5f3027c JA |
292 | return FIO_Q_COMPLETED; |
293 | } | |
294 | ||
3c3168e9 JA |
295 | if (o->useriocb) |
296 | ld->iocbs[ld->head] = (struct iocb *) (uintptr_t) io_u->index; | |
297 | else | |
298 | ld->iocbs[ld->head] = &io_u->iocb; | |
299 | ||
acd45e02 JA |
300 | ld->io_us[ld->head] = io_u; |
301 | ring_inc(ld, &ld->head, 1); | |
302 | ld->queued++; | |
755200a3 JA |
303 | return FIO_Q_QUEUED; |
304 | } | |
305 | ||
7e77dd02 JA |
306 | static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us, |
307 | unsigned int nr) | |
308 | { | |
8b6a404c | 309 | struct timespec now; |
7e77dd02 JA |
310 | unsigned int i; |
311 | ||
12d9d841 JA |
312 | if (!fio_fill_issue_time(td)) |
313 | return; | |
314 | ||
7e77dd02 JA |
315 | fio_gettime(&now, NULL); |
316 | ||
317 | for (i = 0; i < nr; i++) { | |
318 | struct io_u *io_u = io_us[i]; | |
319 | ||
320 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
321 | io_u_queued(td, io_u); | |
322 | } | |
323 | } | |
324 | ||
755200a3 JA |
325 | static int fio_libaio_commit(struct thread_data *td) |
326 | { | |
565e784d | 327 | struct libaio_data *ld = td->io_ops_data; |
755200a3 | 328 | struct iocb **iocbs; |
7e77dd02 | 329 | struct io_u **io_us; |
8b6a404c | 330 | struct timespec ts; |
a120ca7f | 331 | int ret, wait_start = 0; |
755200a3 | 332 | |
acd45e02 | 333 | if (!ld->queued) |
755200a3 JA |
334 | return 0; |
335 | ||
2866c82d | 336 | do { |
acd45e02 JA |
337 | long nr = ld->queued; |
338 | ||
339 | nr = min((unsigned int) nr, ld->entries - ld->tail); | |
340 | io_us = ld->io_us + ld->tail; | |
341 | iocbs = ld->iocbs + ld->tail; | |
342 | ||
343 | ret = io_submit(ld->aio_ctx, nr, iocbs); | |
5e00c2c4 | 344 | if (ret > 0) { |
7e77dd02 | 345 | fio_libaio_queued(td, io_us, ret); |
838bc709 | 346 | io_u_mark_submit(td, ret); |
acd45e02 JA |
347 | |
348 | ld->queued -= ret; | |
349 | ring_inc(ld, &ld->tail, ret); | |
5e00c2c4 | 350 | ret = 0; |
e3b4e568 | 351 | wait_start = 0; |
acd45e02 | 352 | } else if (ret == -EINTR || !ret) { |
838bc709 JA |
353 | if (!ret) |
354 | io_u_mark_submit(td, ret); | |
e3b4e568 | 355 | wait_start = 0; |
2866c82d | 356 | continue; |
acd45e02 JA |
357 | } else if (ret == -EAGAIN) { |
358 | /* | |
359 | * If we get EAGAIN, we should break out without | |
360 | * error and let the upper layer reap some | |
a120ca7f JA |
361 | * events for us. If we have no queued IO, we |
362 | * must loop here. If we loop for more than 30s, | |
363 | * just error out, something must be buggy in the | |
364 | * IO path. | |
acd45e02 | 365 | */ |
a120ca7f JA |
366 | if (ld->queued) { |
367 | ret = 0; | |
368 | break; | |
369 | } | |
370 | if (!wait_start) { | |
8b6a404c | 371 | fio_gettime(&ts, NULL); |
d36b072d | 372 | wait_start = 1; |
8b6a404c | 373 | } else if (mtime_since_now(&ts) > 30000) { |
a120ca7f JA |
374 | log_err("fio: aio appears to be stalled, giving up\n"); |
375 | break; | |
376 | } | |
377 | usleep(1); | |
378 | continue; | |
a31dc2dd JA |
379 | } else if (ret == -ENOMEM) { |
380 | /* | |
381 | * If we get -ENOMEM, reap events if we can. If | |
382 | * we cannot, treat it as a fatal event since there's | |
383 | * nothing we can do about it. | |
384 | */ | |
385 | if (ld->queued) | |
386 | ret = 0; | |
387 | break; | |
838bc709 | 388 | } else |
2866c82d | 389 | break; |
2c3a4ae9 | 390 | } while (ld->queued); |
2866c82d | 391 | |
36167d82 | 392 | return ret; |
2866c82d JA |
393 | } |
394 | ||
395 | static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u) | |
396 | { | |
565e784d | 397 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
398 | |
399 | return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events); | |
400 | } | |
401 | ||
402 | static void fio_libaio_cleanup(struct thread_data *td) | |
403 | { | |
565e784d | 404 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
405 | |
406 | if (ld) { | |
f24c2649 JA |
407 | /* |
408 | * Work-around to avoid huge RCU stalls at exit time. If we | |
409 | * don't do this here, then it'll be torn down by exit_aio(). | |
410 | * But for that case we can parallellize the freeing, thus | |
411 | * speeding it up a lot. | |
412 | */ | |
413 | if (!(td->flags & TD_F_CHILD)) | |
414 | io_destroy(ld->aio_ctx); | |
7e77dd02 JA |
415 | free(ld->aio_events); |
416 | free(ld->iocbs); | |
417 | free(ld->io_us); | |
90a8c9b2 JA |
418 | if (ld->user_iocbs) { |
419 | size_t size = td->o.iodepth * sizeof(struct iocb); | |
420 | fio_memfree(ld->user_iocbs, size, false); | |
421 | } | |
2866c82d | 422 | free(ld); |
2866c82d JA |
423 | } |
424 | } | |
425 | ||
e65ef959 | 426 | static int fio_libaio_old_queue_init(struct libaio_data *ld, unsigned int depth, |
2041bd34 | 427 | bool hipri, bool useriocb, bool fixedbufs) |
ebec344d | 428 | { |
ebec344d JA |
429 | if (hipri) { |
430 | log_err("fio: polled aio not available on your platform\n"); | |
431 | return 1; | |
432 | } | |
3c3168e9 JA |
433 | if (useriocb) { |
434 | log_err("fio: user mapped iocbs not available on your platform\n"); | |
435 | return 1; | |
436 | } | |
2041bd34 JA |
437 | if (fixedbufs) { |
438 | log_err("fio: fixed buffers not available on your platform\n"); | |
439 | return 1; | |
440 | } | |
3c3168e9 | 441 | |
ebec344d | 442 | return io_queue_init(depth, &ld->aio_ctx); |
e65ef959 JA |
443 | } |
444 | ||
445 | static int fio_libaio_queue_init(struct libaio_data *ld, unsigned int depth, | |
2041bd34 | 446 | bool hipri, bool useriocb, bool fixedbufs) |
e65ef959 JA |
447 | { |
448 | #ifdef __NR_sys_io_setup2 | |
449 | int ret, flags = 0; | |
450 | ||
451 | if (hipri) | |
452 | flags |= IOCTX_FLAG_IOPOLL; | |
453 | if (useriocb) | |
454 | flags |= IOCTX_FLAG_USERIOCB; | |
46961748 JA |
455 | if (fixedbufs) { |
456 | struct rlimit rlim = { | |
457 | .rlim_cur = RLIM_INFINITY, | |
458 | .rlim_max = RLIM_INFINITY, | |
459 | }; | |
460 | ||
461 | setrlimit(RLIMIT_MEMLOCK, &rlim); | |
2041bd34 | 462 | flags |= IOCTX_FLAG_FIXEDBUFS; |
46961748 | 463 | } |
e65ef959 JA |
464 | |
465 | ret = syscall(__NR_sys_io_setup2, depth, flags, ld->user_iocbs, | |
cb4f94fa | 466 | NULL, NULL, &ld->aio_ctx); |
e65ef959 JA |
467 | if (!ret) |
468 | return 0; | |
0fcbc009 | 469 | /* fall through to old syscall */ |
ebec344d | 470 | #endif |
2041bd34 JA |
471 | return fio_libaio_old_queue_init(ld, depth, hipri, useriocb, fixedbufs); |
472 | } | |
473 | ||
474 | static int fio_libaio_post_init(struct thread_data *td) | |
475 | { | |
476 | struct libaio_data *ld = td->io_ops_data; | |
477 | struct libaio_options *o = td->eo; | |
478 | struct io_u *io_u; | |
479 | struct iocb *iocb; | |
480 | int err = 0; | |
481 | ||
482 | if (o->fixedbufs) { | |
483 | int i; | |
484 | ||
485 | for (i = 0; i < td->o.iodepth; i++) { | |
486 | io_u = ld->io_u_index[i]; | |
487 | iocb = &ld->user_iocbs[i]; | |
488 | iocb->u.c.buf = io_u->buf; | |
c36210b4 | 489 | iocb->u.c.nbytes = td_max_bs(td); |
0483fcec JA |
490 | |
491 | iocb->u.c.flags = 0; | |
492 | if (o->hipri) | |
493 | iocb->u.c.flags |= IOCB_FLAG_HIPRI; | |
2041bd34 JA |
494 | } |
495 | } | |
496 | ||
497 | err = fio_libaio_queue_init(ld, td->o.iodepth, o->hipri, o->useriocb, | |
498 | o->fixedbufs); | |
499 | if (err) { | |
500 | td_verror(td, -err, "io_queue_init"); | |
501 | return 1; | |
502 | } | |
503 | ||
504 | return 0; | |
ebec344d JA |
505 | } |
506 | ||
2866c82d JA |
507 | static int fio_libaio_init(struct thread_data *td) |
508 | { | |
c90e1017 | 509 | struct libaio_options *o = td->eo; |
acd45e02 | 510 | struct libaio_data *ld; |
2866c82d | 511 | |
acd45e02 | 512 | ld = calloc(1, sizeof(*ld)); |
c1db2dce | 513 | |
3c3168e9 JA |
514 | if (o->useriocb) { |
515 | size_t size; | |
3c3168e9 JA |
516 | |
517 | ld->io_u_index = calloc(td->o.iodepth, sizeof(struct io_u *)); | |
518 | size = td->o.iodepth * sizeof(struct iocb); | |
90a8c9b2 JA |
519 | ld->user_iocbs = fio_memalign(page_size, size, false); |
520 | memset(ld->user_iocbs, 0, size); | |
3c3168e9 JA |
521 | } |
522 | ||
acd45e02 JA |
523 | ld->entries = td->o.iodepth; |
524 | ld->is_pow2 = is_power_of_2(ld->entries); | |
525 | ld->aio_events = calloc(ld->entries, sizeof(struct io_event)); | |
526 | ld->iocbs = calloc(ld->entries, sizeof(struct iocb *)); | |
527 | ld->io_us = calloc(ld->entries, sizeof(struct io_u *)); | |
755200a3 | 528 | |
565e784d | 529 | td->io_ops_data = ld; |
2866c82d JA |
530 | return 0; |
531 | } | |
532 | ||
3c3168e9 JA |
533 | static int fio_libaio_io_u_init(struct thread_data *td, struct io_u *io_u) |
534 | { | |
535 | struct libaio_options *o = td->eo; | |
536 | ||
537 | if (o->useriocb) { | |
538 | struct libaio_data *ld = td->io_ops_data; | |
539 | ||
540 | ld->io_u_index[io_u->index] = io_u; | |
541 | } | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
5f350952 | 546 | static struct ioengine_ops ioengine = { |
de890a1e SL |
547 | .name = "libaio", |
548 | .version = FIO_IOOPS_VERSION, | |
549 | .init = fio_libaio_init, | |
2041bd34 | 550 | .post_init = fio_libaio_post_init, |
3c3168e9 | 551 | .io_u_init = fio_libaio_io_u_init, |
de890a1e SL |
552 | .prep = fio_libaio_prep, |
553 | .queue = fio_libaio_queue, | |
554 | .commit = fio_libaio_commit, | |
555 | .cancel = fio_libaio_cancel, | |
556 | .getevents = fio_libaio_getevents, | |
557 | .event = fio_libaio_event, | |
558 | .cleanup = fio_libaio_cleanup, | |
559 | .open_file = generic_open_file, | |
560 | .close_file = generic_close_file, | |
561 | .get_file_size = generic_get_file_size, | |
562 | .options = options, | |
563 | .option_struct_size = sizeof(struct libaio_options), | |
2866c82d | 564 | }; |
34cfcdaf | 565 | |
5f350952 JA |
566 | static void fio_init fio_libaio_register(void) |
567 | { | |
568 | register_ioengine(&ioengine); | |
569 | } | |
570 | ||
571 | static void fio_exit fio_libaio_unregister(void) | |
572 | { | |
573 | unregister_ioengine(&ioengine); | |
574 | } |