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" |
e9f6567a | 18 | #include "cmdprio.h" |
2866c82d | 19 | |
b2a432bf PC |
20 | /* Should be defined in newest aio_abi.h */ |
21 | #ifndef IOCB_FLAG_IOPRIO | |
22 | #define IOCB_FLAG_IOPRIO (1 << 1) | |
23 | #endif | |
24 | ||
7d42e66e KK |
25 | /* Hack for libaio < 0.3.111 */ |
26 | #ifndef CONFIG_LIBAIO_RW_FLAGS | |
27 | #define aio_rw_flags __pad2 | |
28 | #endif | |
29 | ||
0fc2e103 | 30 | static int fio_libaio_commit(struct thread_data *td); |
b2a432bf | 31 | static int fio_libaio_init(struct thread_data *td); |
0fc2e103 | 32 | |
2866c82d JA |
33 | struct libaio_data { |
34 | io_context_t aio_ctx; | |
35 | struct io_event *aio_events; | |
755200a3 | 36 | struct iocb **iocbs; |
7e77dd02 | 37 | struct io_u **io_us; |
acd45e02 | 38 | |
3c3168e9 JA |
39 | struct io_u **io_u_index; |
40 | ||
acd45e02 JA |
41 | /* |
42 | * Basic ring buffer. 'head' is incremented in _queue(), and | |
43 | * 'tail' is incremented in _commit(). We keep 'queued' so | |
44 | * that we know if the ring is full or empty, when | |
45 | * 'head' == 'tail'. 'entries' is the ring size, and | |
46 | * 'is_pow2' is just an optimization to use AND instead of | |
47 | * modulus to get the remainder on ring increment. | |
48 | */ | |
49 | int is_pow2; | |
50 | unsigned int entries; | |
51 | unsigned int queued; | |
52 | unsigned int head; | |
53 | unsigned int tail; | |
d6cbeab4 NC |
54 | |
55 | struct cmdprio cmdprio; | |
2866c82d JA |
56 | }; |
57 | ||
de890a1e | 58 | struct libaio_options { |
a48f0cc7 | 59 | struct thread_data *td; |
de890a1e | 60 | unsigned int userspace_reap; |
d6cbeab4 | 61 | struct cmdprio_options cmdprio_options; |
7d42e66e | 62 | unsigned int nowait; |
de890a1e SL |
63 | }; |
64 | ||
65 | static struct fio_option options[] = { | |
66 | { | |
67 | .name = "userspace_reap", | |
e8b0e958 | 68 | .lname = "Libaio userspace reaping", |
de890a1e SL |
69 | .type = FIO_OPT_STR_SET, |
70 | .off1 = offsetof(struct libaio_options, userspace_reap), | |
71 | .help = "Use alternative user-space reap implementation", | |
e90a0adf | 72 | .category = FIO_OPT_C_ENGINE, |
5a3cd5f3 | 73 | .group = FIO_OPT_G_LIBAIO, |
de890a1e | 74 | }, |
b2a432bf PC |
75 | #ifdef FIO_HAVE_IOPRIO_CLASS |
76 | { | |
77 | .name = "cmdprio_percentage", | |
78 | .lname = "high priority percentage", | |
79 | .type = FIO_OPT_INT, | |
e9f6567a | 80 | .off1 = offsetof(struct libaio_options, |
d6cbeab4 | 81 | cmdprio_options.percentage[DDIR_READ]), |
e9f6567a | 82 | .off2 = offsetof(struct libaio_options, |
d6cbeab4 | 83 | cmdprio_options.percentage[DDIR_WRITE]), |
e9f6567a | 84 | .minval = 0, |
b2a432bf PC |
85 | .maxval = 100, |
86 | .help = "Send high priority I/O this percentage of the time", | |
87 | .category = FIO_OPT_C_ENGINE, | |
88 | .group = FIO_OPT_G_LIBAIO, | |
89 | }, | |
12f9d54a DLM |
90 | { |
91 | .name = "cmdprio_class", | |
92 | .lname = "Asynchronous I/O priority class", | |
93 | .type = FIO_OPT_INT, | |
94 | .off1 = offsetof(struct libaio_options, | |
d6cbeab4 | 95 | cmdprio_options.class[DDIR_READ]), |
12f9d54a | 96 | .off2 = offsetof(struct libaio_options, |
d6cbeab4 | 97 | cmdprio_options.class[DDIR_WRITE]), |
12f9d54a DLM |
98 | .help = "Set asynchronous IO priority class", |
99 | .minval = IOPRIO_MIN_PRIO_CLASS + 1, | |
100 | .maxval = IOPRIO_MAX_PRIO_CLASS, | |
101 | .interval = 1, | |
102 | .category = FIO_OPT_C_ENGINE, | |
103 | .group = FIO_OPT_G_LIBAIO, | |
104 | }, | |
105 | { | |
106 | .name = "cmdprio", | |
107 | .lname = "Asynchronous I/O priority level", | |
108 | .type = FIO_OPT_INT, | |
109 | .off1 = offsetof(struct libaio_options, | |
d6cbeab4 | 110 | cmdprio_options.level[DDIR_READ]), |
12f9d54a | 111 | .off2 = offsetof(struct libaio_options, |
d6cbeab4 | 112 | cmdprio_options.level[DDIR_WRITE]), |
12f9d54a DLM |
113 | .help = "Set asynchronous IO priority level", |
114 | .minval = IOPRIO_MIN_PRIO, | |
115 | .maxval = IOPRIO_MAX_PRIO, | |
116 | .interval = 1, | |
117 | .category = FIO_OPT_C_ENGINE, | |
118 | .group = FIO_OPT_G_LIBAIO, | |
119 | }, | |
a48f0cc7 DLM |
120 | { |
121 | .name = "cmdprio_bssplit", | |
122 | .lname = "Priority percentage block size split", | |
d6cbeab4 NC |
123 | .type = FIO_OPT_STR_STORE, |
124 | .off1 = offsetof(struct libaio_options, | |
125 | cmdprio_options.bssplit_str), | |
a48f0cc7 DLM |
126 | .help = "Set priority percentages for different block sizes", |
127 | .category = FIO_OPT_C_ENGINE, | |
128 | .group = FIO_OPT_G_LIBAIO, | |
129 | }, | |
b2a432bf PC |
130 | #else |
131 | { | |
132 | .name = "cmdprio_percentage", | |
133 | .lname = "high priority percentage", | |
134 | .type = FIO_OPT_UNSUPPORTED, | |
135 | .help = "Your platform does not support I/O priority classes", | |
136 | }, | |
12f9d54a DLM |
137 | { |
138 | .name = "cmdprio_class", | |
139 | .lname = "Asynchronous I/O priority class", | |
140 | .type = FIO_OPT_UNSUPPORTED, | |
141 | .help = "Your platform does not support I/O priority classes", | |
142 | }, | |
143 | { | |
144 | .name = "cmdprio", | |
145 | .lname = "Asynchronous I/O priority level", | |
146 | .type = FIO_OPT_UNSUPPORTED, | |
147 | .help = "Your platform does not support I/O priority classes", | |
148 | }, | |
a48f0cc7 DLM |
149 | { |
150 | .name = "cmdprio_bssplit", | |
151 | .lname = "Priority percentage block size split", | |
152 | .type = FIO_OPT_UNSUPPORTED, | |
153 | .help = "Your platform does not support I/O priority classes", | |
154 | }, | |
b2a432bf | 155 | #endif |
7d42e66e KK |
156 | { |
157 | .name = "nowait", | |
158 | .lname = "RWF_NOWAIT", | |
159 | .type = FIO_OPT_BOOL, | |
160 | .off1 = offsetof(struct libaio_options, nowait), | |
161 | .help = "Set RWF_NOWAIT for reads/writes", | |
162 | .category = FIO_OPT_C_ENGINE, | |
163 | .group = FIO_OPT_G_LIBAIO, | |
164 | }, | |
de890a1e SL |
165 | { |
166 | .name = NULL, | |
167 | }, | |
168 | }; | |
169 | ||
acd45e02 JA |
170 | static inline void ring_inc(struct libaio_data *ld, unsigned int *val, |
171 | unsigned int add) | |
172 | { | |
173 | if (ld->is_pow2) | |
174 | *val = (*val + add) & (ld->entries - 1); | |
175 | else | |
176 | *val = (*val + add) % ld->entries; | |
177 | } | |
178 | ||
7d42e66e | 179 | static int fio_libaio_prep(struct thread_data *td, struct io_u *io_u) |
2866c82d | 180 | { |
7d42e66e | 181 | struct libaio_options *o = td->eo; |
53cdc686 | 182 | struct fio_file *f = io_u->file; |
ad4e9298 | 183 | struct iocb *iocb = &io_u->iocb; |
53cdc686 | 184 | |
a391d73d | 185 | if (io_u->ddir == DDIR_READ) { |
702906e9 | 186 | io_prep_pread(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
7d42e66e KK |
187 | if (o->nowait) |
188 | iocb->aio_rw_flags |= RWF_NOWAIT; | |
a391d73d | 189 | } else if (io_u->ddir == DDIR_WRITE) { |
702906e9 | 190 | io_prep_pwrite(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
7d42e66e KK |
191 | if (o->nowait) |
192 | iocb->aio_rw_flags |= RWF_NOWAIT; | |
a391d73d | 193 | } else if (ddir_sync(io_u->ddir)) |
3c3168e9 | 194 | io_prep_fsync(iocb, f->fd); |
2866c82d JA |
195 | |
196 | return 0; | |
197 | } | |
198 | ||
127715b6 NC |
199 | static inline void fio_libaio_cmdprio_prep(struct thread_data *td, |
200 | struct io_u *io_u) | |
b2a432bf | 201 | { |
d6cbeab4 NC |
202 | struct libaio_data *ld = td->io_ops_data; |
203 | struct cmdprio *cmdprio = &ld->cmdprio; | |
127715b6 NC |
204 | |
205 | if (fio_cmdprio_set_ioprio(td, cmdprio, io_u)) { | |
206 | io_u->iocb.aio_reqprio = io_u->ioprio; | |
b2a432bf | 207 | io_u->iocb.u.c.flags |= IOCB_FLAG_IOPRIO; |
b2a432bf | 208 | } |
b2a432bf PC |
209 | } |
210 | ||
2866c82d JA |
211 | static struct io_u *fio_libaio_event(struct thread_data *td, int event) |
212 | { | |
565e784d | 213 | struct libaio_data *ld = td->io_ops_data; |
f423479d JA |
214 | struct io_event *ev; |
215 | struct io_u *io_u; | |
2866c82d | 216 | |
f423479d | 217 | ev = ld->aio_events + event; |
702906e9 | 218 | io_u = container_of(ev->obj, struct io_u, iocb); |
f423479d JA |
219 | |
220 | if (ev->res != io_u->xfer_buflen) { | |
221 | if (ev->res > io_u->xfer_buflen) | |
222 | io_u->error = -ev->res; | |
223 | else | |
224 | io_u->resid = io_u->xfer_buflen - ev->res; | |
225 | } else | |
226 | io_u->error = 0; | |
227 | ||
228 | return io_u; | |
2866c82d JA |
229 | } |
230 | ||
675012f0 DE |
231 | struct aio_ring { |
232 | unsigned id; /** kernel internal index number */ | |
233 | unsigned nr; /** number of io_events */ | |
234 | unsigned head; | |
235 | unsigned tail; | |
c44b1ff5 | 236 | |
675012f0 DE |
237 | unsigned magic; |
238 | unsigned compat_features; | |
239 | unsigned incompat_features; | |
240 | unsigned header_length; /** size of aio_ring */ | |
241 | ||
242 | struct io_event events[0]; | |
243 | }; | |
244 | ||
245 | #define AIO_RING_MAGIC 0xa10a10a1 | |
246 | ||
247 | static int user_io_getevents(io_context_t aio_ctx, unsigned int max, | |
c44b1ff5 | 248 | struct io_event *events) |
675012f0 DE |
249 | { |
250 | long i = 0; | |
251 | unsigned head; | |
c44b1ff5 | 252 | struct aio_ring *ring = (struct aio_ring*) aio_ctx; |
675012f0 DE |
253 | |
254 | while (i < max) { | |
255 | head = ring->head; | |
256 | ||
257 | if (head == ring->tail) { | |
258 | /* There are no more completions */ | |
259 | break; | |
260 | } else { | |
261 | /* There is another completion to reap */ | |
262 | events[i] = ring->events[head]; | |
d473a06d BVA |
263 | atomic_store_release(&ring->head, |
264 | (head + 1) % ring->nr); | |
675012f0 DE |
265 | i++; |
266 | } | |
267 | } | |
268 | ||
269 | return i; | |
270 | } | |
271 | ||
e7d2e616 | 272 | static int fio_libaio_getevents(struct thread_data *td, unsigned int min, |
1f440ece | 273 | unsigned int max, const struct timespec *t) |
2866c82d | 274 | { |
565e784d | 275 | struct libaio_data *ld = td->io_ops_data; |
de890a1e | 276 | struct libaio_options *o = td->eo; |
82407585 | 277 | unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min; |
1f440ece | 278 | struct timespec __lt, *lt = NULL; |
0b7fdba7 | 279 | int r, events = 0; |
2866c82d | 280 | |
1f440ece JA |
281 | if (t) { |
282 | __lt = *t; | |
283 | lt = &__lt; | |
284 | } | |
285 | ||
2866c82d | 286 | do { |
de890a1e | 287 | if (o->userspace_reap == 1 |
675012f0 DE |
288 | && actual_min == 0 |
289 | && ((struct aio_ring *)(ld->aio_ctx))->magic | |
290 | == AIO_RING_MAGIC) { | |
291 | r = user_io_getevents(ld->aio_ctx, max, | |
292 | ld->aio_events + events); | |
293 | } else { | |
294 | r = io_getevents(ld->aio_ctx, actual_min, | |
1f440ece | 295 | max, ld->aio_events + events, lt); |
675012f0 | 296 | } |
3441a52d | 297 | if (r > 0) |
0b7fdba7 | 298 | events += r; |
3441a52d | 299 | else if ((min && r == 0) || r == -EAGAIN) { |
0fc2e103 | 300 | fio_libaio_commit(td); |
6347e43d JA |
301 | if (actual_min) |
302 | usleep(10); | |
0fc2e103 | 303 | } else if (r != -EINTR) |
a31dc2dd | 304 | break; |
0b7fdba7 DE |
305 | } while (events < min); |
306 | ||
307 | return r < 0 ? r : events; | |
2866c82d JA |
308 | } |
309 | ||
2e4ef4fb JA |
310 | static enum fio_q_status fio_libaio_queue(struct thread_data *td, |
311 | struct io_u *io_u) | |
2866c82d | 312 | { |
565e784d | 313 | struct libaio_data *ld = td->io_ops_data; |
2866c82d | 314 | |
7101d9c2 JA |
315 | fio_ro_check(td, io_u); |
316 | ||
acd45e02 | 317 | if (ld->queued == td->o.iodepth) |
755200a3 JA |
318 | return FIO_Q_BUSY; |
319 | ||
320 | /* | |
321 | * fsync is tricky, since it can fail and we need to do it | |
322 | * serialized with other io. the reason is that linux doesn't | |
323 | * support aio fsync yet. So return busy for the case where we | |
324 | * have pending io, to let fio complete those first. | |
325 | */ | |
f011531e | 326 | if (ddir_sync(io_u->ddir)) { |
acd45e02 | 327 | if (ld->queued) |
755200a3 | 328 | return FIO_Q_BUSY; |
5f9099ea | 329 | |
f011531e | 330 | do_io_u_sync(td, io_u); |
755200a3 JA |
331 | return FIO_Q_COMPLETED; |
332 | } | |
333 | ||
a5f3027c | 334 | if (io_u->ddir == DDIR_TRIM) { |
acd45e02 | 335 | if (ld->queued) |
a5f3027c JA |
336 | return FIO_Q_BUSY; |
337 | ||
338 | do_io_u_trim(td, io_u); | |
c0681c9d VF |
339 | io_u_mark_submit(td, 1); |
340 | io_u_mark_complete(td, 1); | |
a5f3027c JA |
341 | return FIO_Q_COMPLETED; |
342 | } | |
343 | ||
d6cbeab4 | 344 | if (ld->cmdprio.mode != CMDPRIO_MODE_NONE) |
ff00f247 | 345 | fio_libaio_cmdprio_prep(td, io_u); |
b2a432bf | 346 | |
702906e9 | 347 | ld->iocbs[ld->head] = &io_u->iocb; |
acd45e02 JA |
348 | ld->io_us[ld->head] = io_u; |
349 | ring_inc(ld, &ld->head, 1); | |
350 | ld->queued++; | |
755200a3 JA |
351 | return FIO_Q_QUEUED; |
352 | } | |
353 | ||
7e77dd02 JA |
354 | static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us, |
355 | unsigned int nr) | |
356 | { | |
8b6a404c | 357 | struct timespec now; |
7e77dd02 JA |
358 | unsigned int i; |
359 | ||
12d9d841 JA |
360 | if (!fio_fill_issue_time(td)) |
361 | return; | |
362 | ||
7e77dd02 JA |
363 | fio_gettime(&now, NULL); |
364 | ||
365 | for (i = 0; i < nr; i++) { | |
366 | struct io_u *io_u = io_us[i]; | |
367 | ||
368 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
369 | io_u_queued(td, io_u); | |
370 | } | |
39f56400 VF |
371 | |
372 | /* | |
373 | * only used for iolog | |
374 | */ | |
375 | if (td->o.read_iolog_file) | |
376 | memcpy(&td->last_issue, &now, sizeof(now)); | |
7e77dd02 JA |
377 | } |
378 | ||
755200a3 JA |
379 | static int fio_libaio_commit(struct thread_data *td) |
380 | { | |
565e784d | 381 | struct libaio_data *ld = td->io_ops_data; |
755200a3 | 382 | struct iocb **iocbs; |
7e77dd02 | 383 | struct io_u **io_us; |
8b6a404c | 384 | struct timespec ts; |
a120ca7f | 385 | int ret, wait_start = 0; |
755200a3 | 386 | |
acd45e02 | 387 | if (!ld->queued) |
755200a3 JA |
388 | return 0; |
389 | ||
2866c82d | 390 | do { |
acd45e02 JA |
391 | long nr = ld->queued; |
392 | ||
393 | nr = min((unsigned int) nr, ld->entries - ld->tail); | |
394 | io_us = ld->io_us + ld->tail; | |
395 | iocbs = ld->iocbs + ld->tail; | |
396 | ||
397 | ret = io_submit(ld->aio_ctx, nr, iocbs); | |
5e00c2c4 | 398 | if (ret > 0) { |
7e77dd02 | 399 | fio_libaio_queued(td, io_us, ret); |
838bc709 | 400 | io_u_mark_submit(td, ret); |
acd45e02 JA |
401 | |
402 | ld->queued -= ret; | |
403 | ring_inc(ld, &ld->tail, ret); | |
5e00c2c4 | 404 | ret = 0; |
e3b4e568 | 405 | wait_start = 0; |
acd45e02 | 406 | } else if (ret == -EINTR || !ret) { |
838bc709 JA |
407 | if (!ret) |
408 | io_u_mark_submit(td, ret); | |
e3b4e568 | 409 | wait_start = 0; |
2866c82d | 410 | continue; |
acd45e02 JA |
411 | } else if (ret == -EAGAIN) { |
412 | /* | |
413 | * If we get EAGAIN, we should break out without | |
414 | * error and let the upper layer reap some | |
a120ca7f JA |
415 | * events for us. If we have no queued IO, we |
416 | * must loop here. If we loop for more than 30s, | |
417 | * just error out, something must be buggy in the | |
418 | * IO path. | |
acd45e02 | 419 | */ |
a120ca7f JA |
420 | if (ld->queued) { |
421 | ret = 0; | |
422 | break; | |
423 | } | |
424 | if (!wait_start) { | |
8b6a404c | 425 | fio_gettime(&ts, NULL); |
d36b072d | 426 | wait_start = 1; |
8b6a404c | 427 | } else if (mtime_since_now(&ts) > 30000) { |
a120ca7f JA |
428 | log_err("fio: aio appears to be stalled, giving up\n"); |
429 | break; | |
430 | } | |
431 | usleep(1); | |
432 | continue; | |
a31dc2dd JA |
433 | } else if (ret == -ENOMEM) { |
434 | /* | |
435 | * If we get -ENOMEM, reap events if we can. If | |
436 | * we cannot, treat it as a fatal event since there's | |
437 | * nothing we can do about it. | |
438 | */ | |
439 | if (ld->queued) | |
440 | ret = 0; | |
441 | break; | |
838bc709 | 442 | } else |
2866c82d | 443 | break; |
2c3a4ae9 | 444 | } while (ld->queued); |
2866c82d | 445 | |
36167d82 | 446 | return ret; |
2866c82d JA |
447 | } |
448 | ||
449 | static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u) | |
450 | { | |
565e784d | 451 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
452 | |
453 | return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events); | |
454 | } | |
455 | ||
456 | static void fio_libaio_cleanup(struct thread_data *td) | |
457 | { | |
565e784d | 458 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
459 | |
460 | if (ld) { | |
f24c2649 JA |
461 | /* |
462 | * Work-around to avoid huge RCU stalls at exit time. If we | |
463 | * don't do this here, then it'll be torn down by exit_aio(). | |
464 | * But for that case we can parallellize the freeing, thus | |
465 | * speeding it up a lot. | |
466 | */ | |
467 | if (!(td->flags & TD_F_CHILD)) | |
468 | io_destroy(ld->aio_ctx); | |
d6cbeab4 NC |
469 | |
470 | fio_cmdprio_cleanup(&ld->cmdprio); | |
7e77dd02 JA |
471 | free(ld->aio_events); |
472 | free(ld->iocbs); | |
473 | free(ld->io_us); | |
2866c82d | 474 | free(ld); |
2866c82d JA |
475 | } |
476 | } | |
477 | ||
2041bd34 JA |
478 | static int fio_libaio_post_init(struct thread_data *td) |
479 | { | |
480 | struct libaio_data *ld = td->io_ops_data; | |
ad4e9298 | 481 | int err; |
2041bd34 | 482 | |
ad4e9298 | 483 | err = io_queue_init(td->o.iodepth, &ld->aio_ctx); |
2041bd34 JA |
484 | if (err) { |
485 | td_verror(td, -err, "io_queue_init"); | |
486 | return 1; | |
487 | } | |
488 | ||
489 | return 0; | |
ebec344d JA |
490 | } |
491 | ||
2866c82d JA |
492 | static int fio_libaio_init(struct thread_data *td) |
493 | { | |
acd45e02 | 494 | struct libaio_data *ld; |
b2a432bf | 495 | struct libaio_options *o = td->eo; |
e9f6567a | 496 | int ret; |
2866c82d | 497 | |
acd45e02 | 498 | ld = calloc(1, sizeof(*ld)); |
c1db2dce | 499 | |
acd45e02 JA |
500 | ld->entries = td->o.iodepth; |
501 | ld->is_pow2 = is_power_of_2(ld->entries); | |
502 | ld->aio_events = calloc(ld->entries, sizeof(struct io_event)); | |
503 | ld->iocbs = calloc(ld->entries, sizeof(struct iocb *)); | |
504 | ld->io_us = calloc(ld->entries, sizeof(struct io_u *)); | |
755200a3 | 505 | |
565e784d | 506 | td->io_ops_data = ld; |
e9f6567a | 507 | |
d6cbeab4 | 508 | ret = fio_cmdprio_init(td, &ld->cmdprio, &o->cmdprio_options); |
e9f6567a | 509 | if (ret) { |
b2a432bf PC |
510 | td_verror(td, EINVAL, "fio_libaio_init"); |
511 | return 1; | |
512 | } | |
e9f6567a | 513 | |
2866c82d JA |
514 | return 0; |
515 | } | |
516 | ||
5a8a6a03 | 517 | FIO_STATIC struct ioengine_ops ioengine = { |
de890a1e SL |
518 | .name = "libaio", |
519 | .version = FIO_IOOPS_VERSION, | |
4e7e7898 VF |
520 | .flags = FIO_ASYNCIO_SYNC_TRIM | |
521 | FIO_ASYNCIO_SETS_ISSUE_TIME, | |
de890a1e | 522 | .init = fio_libaio_init, |
2041bd34 | 523 | .post_init = fio_libaio_post_init, |
de890a1e SL |
524 | .prep = fio_libaio_prep, |
525 | .queue = fio_libaio_queue, | |
526 | .commit = fio_libaio_commit, | |
527 | .cancel = fio_libaio_cancel, | |
528 | .getevents = fio_libaio_getevents, | |
529 | .event = fio_libaio_event, | |
530 | .cleanup = fio_libaio_cleanup, | |
531 | .open_file = generic_open_file, | |
532 | .close_file = generic_close_file, | |
533 | .get_file_size = generic_get_file_size, | |
534 | .options = options, | |
535 | .option_struct_size = sizeof(struct libaio_options), | |
2866c82d | 536 | }; |
34cfcdaf | 537 | |
5f350952 JA |
538 | static void fio_init fio_libaio_register(void) |
539 | { | |
540 | register_ioengine(&ioengine); | |
541 | } | |
542 | ||
543 | static void fio_exit fio_libaio_unregister(void) | |
544 | { | |
545 | unregister_ioengine(&ioengine); | |
546 | } |