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; | |
e9f6567a DLM |
54 | |
55 | bool use_cmdprio; | |
2866c82d JA |
56 | }; |
57 | ||
de890a1e | 58 | struct libaio_options { |
a48f0cc7 | 59 | struct thread_data *td; |
de890a1e | 60 | unsigned int userspace_reap; |
e9f6567a | 61 | struct cmdprio cmdprio; |
7d42e66e | 62 | unsigned int nowait; |
de890a1e SL |
63 | }; |
64 | ||
a48f0cc7 DLM |
65 | static int str_cmdprio_bssplit_cb(void *data, const char *input) |
66 | { | |
67 | struct libaio_options *o = data; | |
68 | struct thread_data *td = o->td; | |
69 | struct cmdprio *cmdprio = &o->cmdprio; | |
70 | ||
71 | return fio_cmdprio_bssplit_parse(td, input, cmdprio); | |
72 | } | |
73 | ||
de890a1e SL |
74 | static struct fio_option options[] = { |
75 | { | |
76 | .name = "userspace_reap", | |
e8b0e958 | 77 | .lname = "Libaio userspace reaping", |
de890a1e SL |
78 | .type = FIO_OPT_STR_SET, |
79 | .off1 = offsetof(struct libaio_options, userspace_reap), | |
80 | .help = "Use alternative user-space reap implementation", | |
e90a0adf | 81 | .category = FIO_OPT_C_ENGINE, |
5a3cd5f3 | 82 | .group = FIO_OPT_G_LIBAIO, |
de890a1e | 83 | }, |
b2a432bf PC |
84 | #ifdef FIO_HAVE_IOPRIO_CLASS |
85 | { | |
86 | .name = "cmdprio_percentage", | |
87 | .lname = "high priority percentage", | |
88 | .type = FIO_OPT_INT, | |
e9f6567a DLM |
89 | .off1 = offsetof(struct libaio_options, |
90 | cmdprio.percentage[DDIR_READ]), | |
91 | .off2 = offsetof(struct libaio_options, | |
92 | cmdprio.percentage[DDIR_WRITE]), | |
93 | .minval = 0, | |
b2a432bf PC |
94 | .maxval = 100, |
95 | .help = "Send high priority I/O this percentage of the time", | |
96 | .category = FIO_OPT_C_ENGINE, | |
97 | .group = FIO_OPT_G_LIBAIO, | |
98 | }, | |
12f9d54a DLM |
99 | { |
100 | .name = "cmdprio_class", | |
101 | .lname = "Asynchronous I/O priority class", | |
102 | .type = FIO_OPT_INT, | |
103 | .off1 = offsetof(struct libaio_options, | |
104 | cmdprio.class[DDIR_READ]), | |
105 | .off2 = offsetof(struct libaio_options, | |
106 | cmdprio.class[DDIR_WRITE]), | |
107 | .help = "Set asynchronous IO priority class", | |
108 | .minval = IOPRIO_MIN_PRIO_CLASS + 1, | |
109 | .maxval = IOPRIO_MAX_PRIO_CLASS, | |
110 | .interval = 1, | |
111 | .category = FIO_OPT_C_ENGINE, | |
112 | .group = FIO_OPT_G_LIBAIO, | |
113 | }, | |
114 | { | |
115 | .name = "cmdprio", | |
116 | .lname = "Asynchronous I/O priority level", | |
117 | .type = FIO_OPT_INT, | |
118 | .off1 = offsetof(struct libaio_options, | |
119 | cmdprio.level[DDIR_READ]), | |
120 | .off2 = offsetof(struct libaio_options, | |
121 | cmdprio.level[DDIR_WRITE]), | |
122 | .help = "Set asynchronous IO priority level", | |
123 | .minval = IOPRIO_MIN_PRIO, | |
124 | .maxval = IOPRIO_MAX_PRIO, | |
125 | .interval = 1, | |
126 | .category = FIO_OPT_C_ENGINE, | |
127 | .group = FIO_OPT_G_LIBAIO, | |
128 | }, | |
a48f0cc7 DLM |
129 | { |
130 | .name = "cmdprio_bssplit", | |
131 | .lname = "Priority percentage block size split", | |
132 | .type = FIO_OPT_STR_ULL, | |
133 | .cb = str_cmdprio_bssplit_cb, | |
134 | .off1 = offsetof(struct libaio_options, cmdprio.bssplit), | |
135 | .help = "Set priority percentages for different block sizes", | |
136 | .category = FIO_OPT_C_ENGINE, | |
137 | .group = FIO_OPT_G_LIBAIO, | |
138 | }, | |
b2a432bf PC |
139 | #else |
140 | { | |
141 | .name = "cmdprio_percentage", | |
142 | .lname = "high priority percentage", | |
143 | .type = FIO_OPT_UNSUPPORTED, | |
144 | .help = "Your platform does not support I/O priority classes", | |
145 | }, | |
12f9d54a DLM |
146 | { |
147 | .name = "cmdprio_class", | |
148 | .lname = "Asynchronous I/O priority class", | |
149 | .type = FIO_OPT_UNSUPPORTED, | |
150 | .help = "Your platform does not support I/O priority classes", | |
151 | }, | |
152 | { | |
153 | .name = "cmdprio", | |
154 | .lname = "Asynchronous I/O priority level", | |
155 | .type = FIO_OPT_UNSUPPORTED, | |
156 | .help = "Your platform does not support I/O priority classes", | |
157 | }, | |
a48f0cc7 DLM |
158 | { |
159 | .name = "cmdprio_bssplit", | |
160 | .lname = "Priority percentage block size split", | |
161 | .type = FIO_OPT_UNSUPPORTED, | |
162 | .help = "Your platform does not support I/O priority classes", | |
163 | }, | |
b2a432bf | 164 | #endif |
7d42e66e KK |
165 | { |
166 | .name = "nowait", | |
167 | .lname = "RWF_NOWAIT", | |
168 | .type = FIO_OPT_BOOL, | |
169 | .off1 = offsetof(struct libaio_options, nowait), | |
170 | .help = "Set RWF_NOWAIT for reads/writes", | |
171 | .category = FIO_OPT_C_ENGINE, | |
172 | .group = FIO_OPT_G_LIBAIO, | |
173 | }, | |
de890a1e SL |
174 | { |
175 | .name = NULL, | |
176 | }, | |
177 | }; | |
178 | ||
acd45e02 JA |
179 | static inline void ring_inc(struct libaio_data *ld, unsigned int *val, |
180 | unsigned int add) | |
181 | { | |
182 | if (ld->is_pow2) | |
183 | *val = (*val + add) & (ld->entries - 1); | |
184 | else | |
185 | *val = (*val + add) % ld->entries; | |
186 | } | |
187 | ||
7d42e66e | 188 | static int fio_libaio_prep(struct thread_data *td, struct io_u *io_u) |
2866c82d | 189 | { |
7d42e66e | 190 | struct libaio_options *o = td->eo; |
53cdc686 | 191 | struct fio_file *f = io_u->file; |
ad4e9298 | 192 | struct iocb *iocb = &io_u->iocb; |
53cdc686 | 193 | |
a391d73d | 194 | if (io_u->ddir == DDIR_READ) { |
702906e9 | 195 | io_prep_pread(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
7d42e66e KK |
196 | if (o->nowait) |
197 | iocb->aio_rw_flags |= RWF_NOWAIT; | |
a391d73d | 198 | } else if (io_u->ddir == DDIR_WRITE) { |
702906e9 | 199 | io_prep_pwrite(iocb, f->fd, io_u->xfer_buf, io_u->xfer_buflen, io_u->offset); |
7d42e66e KK |
200 | if (o->nowait) |
201 | iocb->aio_rw_flags |= RWF_NOWAIT; | |
a391d73d | 202 | } else if (ddir_sync(io_u->ddir)) |
3c3168e9 | 203 | io_prep_fsync(iocb, f->fd); |
2866c82d JA |
204 | |
205 | return 0; | |
206 | } | |
207 | ||
b2a432bf PC |
208 | static void fio_libaio_prio_prep(struct thread_data *td, struct io_u *io_u) |
209 | { | |
210 | struct libaio_options *o = td->eo; | |
e9f6567a | 211 | struct cmdprio *cmdprio = &o->cmdprio; |
12f9d54a | 212 | enum fio_ddir ddir = io_u->ddir; |
a48f0cc7 | 213 | unsigned int p = fio_cmdprio_percentage(cmdprio, io_u); |
e9f6567a DLM |
214 | |
215 | if (p && rand_between(&td->prio_state, 0, 99) < p) { | |
12f9d54a DLM |
216 | io_u->iocb.aio_reqprio = |
217 | ioprio_value(cmdprio->class[ddir], cmdprio->level[ddir]); | |
b2a432bf PC |
218 | io_u->iocb.u.c.flags |= IOCB_FLAG_IOPRIO; |
219 | io_u->flags |= IO_U_F_PRIORITY; | |
220 | } | |
b2a432bf PC |
221 | } |
222 | ||
2866c82d JA |
223 | static struct io_u *fio_libaio_event(struct thread_data *td, int event) |
224 | { | |
565e784d | 225 | struct libaio_data *ld = td->io_ops_data; |
f423479d JA |
226 | struct io_event *ev; |
227 | struct io_u *io_u; | |
2866c82d | 228 | |
f423479d | 229 | ev = ld->aio_events + event; |
702906e9 | 230 | io_u = container_of(ev->obj, struct io_u, iocb); |
f423479d JA |
231 | |
232 | if (ev->res != io_u->xfer_buflen) { | |
233 | if (ev->res > io_u->xfer_buflen) | |
234 | io_u->error = -ev->res; | |
235 | else | |
236 | io_u->resid = io_u->xfer_buflen - ev->res; | |
237 | } else | |
238 | io_u->error = 0; | |
239 | ||
240 | return io_u; | |
2866c82d JA |
241 | } |
242 | ||
675012f0 DE |
243 | struct aio_ring { |
244 | unsigned id; /** kernel internal index number */ | |
245 | unsigned nr; /** number of io_events */ | |
246 | unsigned head; | |
247 | unsigned tail; | |
c44b1ff5 | 248 | |
675012f0 DE |
249 | unsigned magic; |
250 | unsigned compat_features; | |
251 | unsigned incompat_features; | |
252 | unsigned header_length; /** size of aio_ring */ | |
253 | ||
254 | struct io_event events[0]; | |
255 | }; | |
256 | ||
257 | #define AIO_RING_MAGIC 0xa10a10a1 | |
258 | ||
259 | static int user_io_getevents(io_context_t aio_ctx, unsigned int max, | |
c44b1ff5 | 260 | struct io_event *events) |
675012f0 DE |
261 | { |
262 | long i = 0; | |
263 | unsigned head; | |
c44b1ff5 | 264 | struct aio_ring *ring = (struct aio_ring*) aio_ctx; |
675012f0 DE |
265 | |
266 | while (i < max) { | |
267 | head = ring->head; | |
268 | ||
269 | if (head == ring->tail) { | |
270 | /* There are no more completions */ | |
271 | break; | |
272 | } else { | |
273 | /* There is another completion to reap */ | |
274 | events[i] = ring->events[head]; | |
d473a06d BVA |
275 | atomic_store_release(&ring->head, |
276 | (head + 1) % ring->nr); | |
675012f0 DE |
277 | i++; |
278 | } | |
279 | } | |
280 | ||
281 | return i; | |
282 | } | |
283 | ||
e7d2e616 | 284 | static int fio_libaio_getevents(struct thread_data *td, unsigned int min, |
1f440ece | 285 | unsigned int max, const struct timespec *t) |
2866c82d | 286 | { |
565e784d | 287 | struct libaio_data *ld = td->io_ops_data; |
de890a1e | 288 | struct libaio_options *o = td->eo; |
82407585 | 289 | unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min; |
1f440ece | 290 | struct timespec __lt, *lt = NULL; |
0b7fdba7 | 291 | int r, events = 0; |
2866c82d | 292 | |
1f440ece JA |
293 | if (t) { |
294 | __lt = *t; | |
295 | lt = &__lt; | |
296 | } | |
297 | ||
2866c82d | 298 | do { |
de890a1e | 299 | if (o->userspace_reap == 1 |
675012f0 DE |
300 | && actual_min == 0 |
301 | && ((struct aio_ring *)(ld->aio_ctx))->magic | |
302 | == AIO_RING_MAGIC) { | |
303 | r = user_io_getevents(ld->aio_ctx, max, | |
304 | ld->aio_events + events); | |
305 | } else { | |
306 | r = io_getevents(ld->aio_ctx, actual_min, | |
1f440ece | 307 | max, ld->aio_events + events, lt); |
675012f0 | 308 | } |
3441a52d | 309 | if (r > 0) |
0b7fdba7 | 310 | events += r; |
3441a52d | 311 | else if ((min && r == 0) || r == -EAGAIN) { |
0fc2e103 | 312 | fio_libaio_commit(td); |
6347e43d JA |
313 | if (actual_min) |
314 | usleep(10); | |
0fc2e103 | 315 | } else if (r != -EINTR) |
a31dc2dd | 316 | break; |
0b7fdba7 DE |
317 | } while (events < min); |
318 | ||
319 | return r < 0 ? r : events; | |
2866c82d JA |
320 | } |
321 | ||
2e4ef4fb JA |
322 | static enum fio_q_status fio_libaio_queue(struct thread_data *td, |
323 | struct io_u *io_u) | |
2866c82d | 324 | { |
565e784d | 325 | struct libaio_data *ld = td->io_ops_data; |
2866c82d | 326 | |
7101d9c2 JA |
327 | fio_ro_check(td, io_u); |
328 | ||
acd45e02 | 329 | if (ld->queued == td->o.iodepth) |
755200a3 JA |
330 | return FIO_Q_BUSY; |
331 | ||
332 | /* | |
333 | * fsync is tricky, since it can fail and we need to do it | |
334 | * serialized with other io. the reason is that linux doesn't | |
335 | * support aio fsync yet. So return busy for the case where we | |
336 | * have pending io, to let fio complete those first. | |
337 | */ | |
f011531e | 338 | if (ddir_sync(io_u->ddir)) { |
acd45e02 | 339 | if (ld->queued) |
755200a3 | 340 | return FIO_Q_BUSY; |
5f9099ea | 341 | |
f011531e | 342 | do_io_u_sync(td, io_u); |
755200a3 JA |
343 | return FIO_Q_COMPLETED; |
344 | } | |
345 | ||
a5f3027c | 346 | if (io_u->ddir == DDIR_TRIM) { |
acd45e02 | 347 | if (ld->queued) |
a5f3027c JA |
348 | return FIO_Q_BUSY; |
349 | ||
350 | do_io_u_trim(td, io_u); | |
c0681c9d VF |
351 | io_u_mark_submit(td, 1); |
352 | io_u_mark_complete(td, 1); | |
a5f3027c JA |
353 | return FIO_Q_COMPLETED; |
354 | } | |
355 | ||
e9f6567a | 356 | if (ld->use_cmdprio) |
b2a432bf PC |
357 | fio_libaio_prio_prep(td, io_u); |
358 | ||
702906e9 | 359 | ld->iocbs[ld->head] = &io_u->iocb; |
acd45e02 JA |
360 | ld->io_us[ld->head] = io_u; |
361 | ring_inc(ld, &ld->head, 1); | |
362 | ld->queued++; | |
755200a3 JA |
363 | return FIO_Q_QUEUED; |
364 | } | |
365 | ||
7e77dd02 JA |
366 | static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us, |
367 | unsigned int nr) | |
368 | { | |
8b6a404c | 369 | struct timespec now; |
7e77dd02 JA |
370 | unsigned int i; |
371 | ||
12d9d841 JA |
372 | if (!fio_fill_issue_time(td)) |
373 | return; | |
374 | ||
7e77dd02 JA |
375 | fio_gettime(&now, NULL); |
376 | ||
377 | for (i = 0; i < nr; i++) { | |
378 | struct io_u *io_u = io_us[i]; | |
379 | ||
380 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
381 | io_u_queued(td, io_u); | |
382 | } | |
383 | } | |
384 | ||
755200a3 JA |
385 | static int fio_libaio_commit(struct thread_data *td) |
386 | { | |
565e784d | 387 | struct libaio_data *ld = td->io_ops_data; |
755200a3 | 388 | struct iocb **iocbs; |
7e77dd02 | 389 | struct io_u **io_us; |
8b6a404c | 390 | struct timespec ts; |
a120ca7f | 391 | int ret, wait_start = 0; |
755200a3 | 392 | |
acd45e02 | 393 | if (!ld->queued) |
755200a3 JA |
394 | return 0; |
395 | ||
2866c82d | 396 | do { |
acd45e02 JA |
397 | long nr = ld->queued; |
398 | ||
399 | nr = min((unsigned int) nr, ld->entries - ld->tail); | |
400 | io_us = ld->io_us + ld->tail; | |
401 | iocbs = ld->iocbs + ld->tail; | |
402 | ||
403 | ret = io_submit(ld->aio_ctx, nr, iocbs); | |
5e00c2c4 | 404 | if (ret > 0) { |
7e77dd02 | 405 | fio_libaio_queued(td, io_us, ret); |
838bc709 | 406 | io_u_mark_submit(td, ret); |
acd45e02 JA |
407 | |
408 | ld->queued -= ret; | |
409 | ring_inc(ld, &ld->tail, ret); | |
5e00c2c4 | 410 | ret = 0; |
e3b4e568 | 411 | wait_start = 0; |
acd45e02 | 412 | } else if (ret == -EINTR || !ret) { |
838bc709 JA |
413 | if (!ret) |
414 | io_u_mark_submit(td, ret); | |
e3b4e568 | 415 | wait_start = 0; |
2866c82d | 416 | continue; |
acd45e02 JA |
417 | } else if (ret == -EAGAIN) { |
418 | /* | |
419 | * If we get EAGAIN, we should break out without | |
420 | * error and let the upper layer reap some | |
a120ca7f JA |
421 | * events for us. If we have no queued IO, we |
422 | * must loop here. If we loop for more than 30s, | |
423 | * just error out, something must be buggy in the | |
424 | * IO path. | |
acd45e02 | 425 | */ |
a120ca7f JA |
426 | if (ld->queued) { |
427 | ret = 0; | |
428 | break; | |
429 | } | |
430 | if (!wait_start) { | |
8b6a404c | 431 | fio_gettime(&ts, NULL); |
d36b072d | 432 | wait_start = 1; |
8b6a404c | 433 | } else if (mtime_since_now(&ts) > 30000) { |
a120ca7f JA |
434 | log_err("fio: aio appears to be stalled, giving up\n"); |
435 | break; | |
436 | } | |
437 | usleep(1); | |
438 | continue; | |
a31dc2dd JA |
439 | } else if (ret == -ENOMEM) { |
440 | /* | |
441 | * If we get -ENOMEM, reap events if we can. If | |
442 | * we cannot, treat it as a fatal event since there's | |
443 | * nothing we can do about it. | |
444 | */ | |
445 | if (ld->queued) | |
446 | ret = 0; | |
447 | break; | |
838bc709 | 448 | } else |
2866c82d | 449 | break; |
2c3a4ae9 | 450 | } while (ld->queued); |
2866c82d | 451 | |
36167d82 | 452 | return ret; |
2866c82d JA |
453 | } |
454 | ||
455 | static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u) | |
456 | { | |
565e784d | 457 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
458 | |
459 | return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events); | |
460 | } | |
461 | ||
462 | static void fio_libaio_cleanup(struct thread_data *td) | |
463 | { | |
565e784d | 464 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
465 | |
466 | if (ld) { | |
f24c2649 JA |
467 | /* |
468 | * Work-around to avoid huge RCU stalls at exit time. If we | |
469 | * don't do this here, then it'll be torn down by exit_aio(). | |
470 | * But for that case we can parallellize the freeing, thus | |
471 | * speeding it up a lot. | |
472 | */ | |
473 | if (!(td->flags & TD_F_CHILD)) | |
474 | io_destroy(ld->aio_ctx); | |
7e77dd02 JA |
475 | free(ld->aio_events); |
476 | free(ld->iocbs); | |
477 | free(ld->io_us); | |
2866c82d | 478 | free(ld); |
2866c82d JA |
479 | } |
480 | } | |
481 | ||
2041bd34 JA |
482 | static int fio_libaio_post_init(struct thread_data *td) |
483 | { | |
484 | struct libaio_data *ld = td->io_ops_data; | |
ad4e9298 | 485 | int err; |
2041bd34 | 486 | |
ad4e9298 | 487 | err = io_queue_init(td->o.iodepth, &ld->aio_ctx); |
2041bd34 JA |
488 | if (err) { |
489 | td_verror(td, -err, "io_queue_init"); | |
490 | return 1; | |
491 | } | |
492 | ||
493 | return 0; | |
ebec344d JA |
494 | } |
495 | ||
2866c82d JA |
496 | static int fio_libaio_init(struct thread_data *td) |
497 | { | |
acd45e02 | 498 | struct libaio_data *ld; |
b2a432bf | 499 | struct libaio_options *o = td->eo; |
e9f6567a DLM |
500 | struct cmdprio *cmdprio = &o->cmdprio; |
501 | int ret; | |
2866c82d | 502 | |
acd45e02 | 503 | ld = calloc(1, sizeof(*ld)); |
c1db2dce | 504 | |
acd45e02 JA |
505 | ld->entries = td->o.iodepth; |
506 | ld->is_pow2 = is_power_of_2(ld->entries); | |
507 | ld->aio_events = calloc(ld->entries, sizeof(struct io_event)); | |
508 | ld->iocbs = calloc(ld->entries, sizeof(struct iocb *)); | |
509 | ld->io_us = calloc(ld->entries, sizeof(struct io_u *)); | |
755200a3 | 510 | |
565e784d | 511 | td->io_ops_data = ld; |
e9f6567a DLM |
512 | |
513 | ret = fio_cmdprio_init(td, cmdprio, &ld->use_cmdprio); | |
514 | if (ret) { | |
b2a432bf PC |
515 | td_verror(td, EINVAL, "fio_libaio_init"); |
516 | return 1; | |
517 | } | |
e9f6567a | 518 | |
2866c82d JA |
519 | return 0; |
520 | } | |
521 | ||
5a8a6a03 | 522 | FIO_STATIC struct ioengine_ops ioengine = { |
de890a1e SL |
523 | .name = "libaio", |
524 | .version = FIO_IOOPS_VERSION, | |
04ba61df | 525 | .flags = FIO_ASYNCIO_SYNC_TRIM, |
de890a1e | 526 | .init = fio_libaio_init, |
2041bd34 | 527 | .post_init = fio_libaio_post_init, |
de890a1e SL |
528 | .prep = fio_libaio_prep, |
529 | .queue = fio_libaio_queue, | |
530 | .commit = fio_libaio_commit, | |
531 | .cancel = fio_libaio_cancel, | |
532 | .getevents = fio_libaio_getevents, | |
533 | .event = fio_libaio_event, | |
534 | .cleanup = fio_libaio_cleanup, | |
535 | .open_file = generic_open_file, | |
536 | .close_file = generic_close_file, | |
537 | .get_file_size = generic_get_file_size, | |
538 | .options = options, | |
539 | .option_struct_size = sizeof(struct libaio_options), | |
2866c82d | 540 | }; |
34cfcdaf | 541 | |
5f350952 JA |
542 | static void fio_init fio_libaio_register(void) |
543 | { | |
544 | register_ioengine(&ioengine); | |
545 | } | |
546 | ||
547 | static void fio_exit fio_libaio_unregister(void) | |
548 | { | |
549 | unregister_ioengine(&ioengine); | |
550 | } |