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); |
1437d635 DLM |
214 | unsigned int cmdprio_value = |
215 | ioprio_value(cmdprio->class[ddir], cmdprio->level[ddir]); | |
e9f6567a DLM |
216 | |
217 | if (p && rand_between(&td->prio_state, 0, 99) < p) { | |
03ec570f | 218 | io_u->ioprio = cmdprio_value; |
1437d635 | 219 | io_u->iocb.aio_reqprio = cmdprio_value; |
b2a432bf | 220 | io_u->iocb.u.c.flags |= IOCB_FLAG_IOPRIO; |
1437d635 DLM |
221 | if (!td->ioprio || cmdprio_value < td->ioprio) { |
222 | /* | |
223 | * The async IO priority is higher (has a lower value) | |
224 | * than the default context priority. | |
225 | */ | |
03ec570f | 226 | io_u->flags |= IO_U_F_HIGH_PRIO; |
1437d635 DLM |
227 | } |
228 | } else if (td->ioprio && td->ioprio < cmdprio_value) { | |
229 | /* | |
230 | * The IO will be executed with the default context priority, | |
231 | * and this priority is higher (has a lower value) than the | |
232 | * async IO priority. | |
233 | */ | |
03ec570f | 234 | io_u->flags |= IO_U_F_HIGH_PRIO; |
b2a432bf | 235 | } |
b2a432bf PC |
236 | } |
237 | ||
2866c82d JA |
238 | static struct io_u *fio_libaio_event(struct thread_data *td, int event) |
239 | { | |
565e784d | 240 | struct libaio_data *ld = td->io_ops_data; |
f423479d JA |
241 | struct io_event *ev; |
242 | struct io_u *io_u; | |
2866c82d | 243 | |
f423479d | 244 | ev = ld->aio_events + event; |
702906e9 | 245 | io_u = container_of(ev->obj, struct io_u, iocb); |
f423479d JA |
246 | |
247 | if (ev->res != io_u->xfer_buflen) { | |
248 | if (ev->res > io_u->xfer_buflen) | |
249 | io_u->error = -ev->res; | |
250 | else | |
251 | io_u->resid = io_u->xfer_buflen - ev->res; | |
252 | } else | |
253 | io_u->error = 0; | |
254 | ||
255 | return io_u; | |
2866c82d JA |
256 | } |
257 | ||
675012f0 DE |
258 | struct aio_ring { |
259 | unsigned id; /** kernel internal index number */ | |
260 | unsigned nr; /** number of io_events */ | |
261 | unsigned head; | |
262 | unsigned tail; | |
c44b1ff5 | 263 | |
675012f0 DE |
264 | unsigned magic; |
265 | unsigned compat_features; | |
266 | unsigned incompat_features; | |
267 | unsigned header_length; /** size of aio_ring */ | |
268 | ||
269 | struct io_event events[0]; | |
270 | }; | |
271 | ||
272 | #define AIO_RING_MAGIC 0xa10a10a1 | |
273 | ||
274 | static int user_io_getevents(io_context_t aio_ctx, unsigned int max, | |
c44b1ff5 | 275 | struct io_event *events) |
675012f0 DE |
276 | { |
277 | long i = 0; | |
278 | unsigned head; | |
c44b1ff5 | 279 | struct aio_ring *ring = (struct aio_ring*) aio_ctx; |
675012f0 DE |
280 | |
281 | while (i < max) { | |
282 | head = ring->head; | |
283 | ||
284 | if (head == ring->tail) { | |
285 | /* There are no more completions */ | |
286 | break; | |
287 | } else { | |
288 | /* There is another completion to reap */ | |
289 | events[i] = ring->events[head]; | |
d473a06d BVA |
290 | atomic_store_release(&ring->head, |
291 | (head + 1) % ring->nr); | |
675012f0 DE |
292 | i++; |
293 | } | |
294 | } | |
295 | ||
296 | return i; | |
297 | } | |
298 | ||
e7d2e616 | 299 | static int fio_libaio_getevents(struct thread_data *td, unsigned int min, |
1f440ece | 300 | unsigned int max, const struct timespec *t) |
2866c82d | 301 | { |
565e784d | 302 | struct libaio_data *ld = td->io_ops_data; |
de890a1e | 303 | struct libaio_options *o = td->eo; |
82407585 | 304 | unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min; |
1f440ece | 305 | struct timespec __lt, *lt = NULL; |
0b7fdba7 | 306 | int r, events = 0; |
2866c82d | 307 | |
1f440ece JA |
308 | if (t) { |
309 | __lt = *t; | |
310 | lt = &__lt; | |
311 | } | |
312 | ||
2866c82d | 313 | do { |
de890a1e | 314 | if (o->userspace_reap == 1 |
675012f0 DE |
315 | && actual_min == 0 |
316 | && ((struct aio_ring *)(ld->aio_ctx))->magic | |
317 | == AIO_RING_MAGIC) { | |
318 | r = user_io_getevents(ld->aio_ctx, max, | |
319 | ld->aio_events + events); | |
320 | } else { | |
321 | r = io_getevents(ld->aio_ctx, actual_min, | |
1f440ece | 322 | max, ld->aio_events + events, lt); |
675012f0 | 323 | } |
3441a52d | 324 | if (r > 0) |
0b7fdba7 | 325 | events += r; |
3441a52d | 326 | else if ((min && r == 0) || r == -EAGAIN) { |
0fc2e103 | 327 | fio_libaio_commit(td); |
6347e43d JA |
328 | if (actual_min) |
329 | usleep(10); | |
0fc2e103 | 330 | } else if (r != -EINTR) |
a31dc2dd | 331 | break; |
0b7fdba7 DE |
332 | } while (events < min); |
333 | ||
334 | return r < 0 ? r : events; | |
2866c82d JA |
335 | } |
336 | ||
2e4ef4fb JA |
337 | static enum fio_q_status fio_libaio_queue(struct thread_data *td, |
338 | struct io_u *io_u) | |
2866c82d | 339 | { |
565e784d | 340 | struct libaio_data *ld = td->io_ops_data; |
2866c82d | 341 | |
7101d9c2 JA |
342 | fio_ro_check(td, io_u); |
343 | ||
acd45e02 | 344 | if (ld->queued == td->o.iodepth) |
755200a3 JA |
345 | return FIO_Q_BUSY; |
346 | ||
347 | /* | |
348 | * fsync is tricky, since it can fail and we need to do it | |
349 | * serialized with other io. the reason is that linux doesn't | |
350 | * support aio fsync yet. So return busy for the case where we | |
351 | * have pending io, to let fio complete those first. | |
352 | */ | |
f011531e | 353 | if (ddir_sync(io_u->ddir)) { |
acd45e02 | 354 | if (ld->queued) |
755200a3 | 355 | return FIO_Q_BUSY; |
5f9099ea | 356 | |
f011531e | 357 | do_io_u_sync(td, io_u); |
755200a3 JA |
358 | return FIO_Q_COMPLETED; |
359 | } | |
360 | ||
a5f3027c | 361 | if (io_u->ddir == DDIR_TRIM) { |
acd45e02 | 362 | if (ld->queued) |
a5f3027c JA |
363 | return FIO_Q_BUSY; |
364 | ||
365 | do_io_u_trim(td, io_u); | |
c0681c9d VF |
366 | io_u_mark_submit(td, 1); |
367 | io_u_mark_complete(td, 1); | |
a5f3027c JA |
368 | return FIO_Q_COMPLETED; |
369 | } | |
370 | ||
e9f6567a | 371 | if (ld->use_cmdprio) |
b2a432bf PC |
372 | fio_libaio_prio_prep(td, io_u); |
373 | ||
702906e9 | 374 | ld->iocbs[ld->head] = &io_u->iocb; |
acd45e02 JA |
375 | ld->io_us[ld->head] = io_u; |
376 | ring_inc(ld, &ld->head, 1); | |
377 | ld->queued++; | |
755200a3 JA |
378 | return FIO_Q_QUEUED; |
379 | } | |
380 | ||
7e77dd02 JA |
381 | static void fio_libaio_queued(struct thread_data *td, struct io_u **io_us, |
382 | unsigned int nr) | |
383 | { | |
8b6a404c | 384 | struct timespec now; |
7e77dd02 JA |
385 | unsigned int i; |
386 | ||
12d9d841 JA |
387 | if (!fio_fill_issue_time(td)) |
388 | return; | |
389 | ||
7e77dd02 JA |
390 | fio_gettime(&now, NULL); |
391 | ||
392 | for (i = 0; i < nr; i++) { | |
393 | struct io_u *io_u = io_us[i]; | |
394 | ||
395 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
396 | io_u_queued(td, io_u); | |
397 | } | |
398 | } | |
399 | ||
755200a3 JA |
400 | static int fio_libaio_commit(struct thread_data *td) |
401 | { | |
565e784d | 402 | struct libaio_data *ld = td->io_ops_data; |
755200a3 | 403 | struct iocb **iocbs; |
7e77dd02 | 404 | struct io_u **io_us; |
8b6a404c | 405 | struct timespec ts; |
a120ca7f | 406 | int ret, wait_start = 0; |
755200a3 | 407 | |
acd45e02 | 408 | if (!ld->queued) |
755200a3 JA |
409 | return 0; |
410 | ||
2866c82d | 411 | do { |
acd45e02 JA |
412 | long nr = ld->queued; |
413 | ||
414 | nr = min((unsigned int) nr, ld->entries - ld->tail); | |
415 | io_us = ld->io_us + ld->tail; | |
416 | iocbs = ld->iocbs + ld->tail; | |
417 | ||
418 | ret = io_submit(ld->aio_ctx, nr, iocbs); | |
5e00c2c4 | 419 | if (ret > 0) { |
7e77dd02 | 420 | fio_libaio_queued(td, io_us, ret); |
838bc709 | 421 | io_u_mark_submit(td, ret); |
acd45e02 JA |
422 | |
423 | ld->queued -= ret; | |
424 | ring_inc(ld, &ld->tail, ret); | |
5e00c2c4 | 425 | ret = 0; |
e3b4e568 | 426 | wait_start = 0; |
acd45e02 | 427 | } else if (ret == -EINTR || !ret) { |
838bc709 JA |
428 | if (!ret) |
429 | io_u_mark_submit(td, ret); | |
e3b4e568 | 430 | wait_start = 0; |
2866c82d | 431 | continue; |
acd45e02 JA |
432 | } else if (ret == -EAGAIN) { |
433 | /* | |
434 | * If we get EAGAIN, we should break out without | |
435 | * error and let the upper layer reap some | |
a120ca7f JA |
436 | * events for us. If we have no queued IO, we |
437 | * must loop here. If we loop for more than 30s, | |
438 | * just error out, something must be buggy in the | |
439 | * IO path. | |
acd45e02 | 440 | */ |
a120ca7f JA |
441 | if (ld->queued) { |
442 | ret = 0; | |
443 | break; | |
444 | } | |
445 | if (!wait_start) { | |
8b6a404c | 446 | fio_gettime(&ts, NULL); |
d36b072d | 447 | wait_start = 1; |
8b6a404c | 448 | } else if (mtime_since_now(&ts) > 30000) { |
a120ca7f JA |
449 | log_err("fio: aio appears to be stalled, giving up\n"); |
450 | break; | |
451 | } | |
452 | usleep(1); | |
453 | continue; | |
a31dc2dd JA |
454 | } else if (ret == -ENOMEM) { |
455 | /* | |
456 | * If we get -ENOMEM, reap events if we can. If | |
457 | * we cannot, treat it as a fatal event since there's | |
458 | * nothing we can do about it. | |
459 | */ | |
460 | if (ld->queued) | |
461 | ret = 0; | |
462 | break; | |
838bc709 | 463 | } else |
2866c82d | 464 | break; |
2c3a4ae9 | 465 | } while (ld->queued); |
2866c82d | 466 | |
36167d82 | 467 | return ret; |
2866c82d JA |
468 | } |
469 | ||
470 | static int fio_libaio_cancel(struct thread_data *td, struct io_u *io_u) | |
471 | { | |
565e784d | 472 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
473 | |
474 | return io_cancel(ld->aio_ctx, &io_u->iocb, ld->aio_events); | |
475 | } | |
476 | ||
477 | static void fio_libaio_cleanup(struct thread_data *td) | |
478 | { | |
565e784d | 479 | struct libaio_data *ld = td->io_ops_data; |
2866c82d JA |
480 | |
481 | if (ld) { | |
f24c2649 JA |
482 | /* |
483 | * Work-around to avoid huge RCU stalls at exit time. If we | |
484 | * don't do this here, then it'll be torn down by exit_aio(). | |
485 | * But for that case we can parallellize the freeing, thus | |
486 | * speeding it up a lot. | |
487 | */ | |
488 | if (!(td->flags & TD_F_CHILD)) | |
489 | io_destroy(ld->aio_ctx); | |
7e77dd02 JA |
490 | free(ld->aio_events); |
491 | free(ld->iocbs); | |
492 | free(ld->io_us); | |
2866c82d | 493 | free(ld); |
2866c82d JA |
494 | } |
495 | } | |
496 | ||
2041bd34 JA |
497 | static int fio_libaio_post_init(struct thread_data *td) |
498 | { | |
499 | struct libaio_data *ld = td->io_ops_data; | |
ad4e9298 | 500 | int err; |
2041bd34 | 501 | |
ad4e9298 | 502 | err = io_queue_init(td->o.iodepth, &ld->aio_ctx); |
2041bd34 JA |
503 | if (err) { |
504 | td_verror(td, -err, "io_queue_init"); | |
505 | return 1; | |
506 | } | |
507 | ||
508 | return 0; | |
ebec344d JA |
509 | } |
510 | ||
2866c82d JA |
511 | static int fio_libaio_init(struct thread_data *td) |
512 | { | |
acd45e02 | 513 | struct libaio_data *ld; |
b2a432bf | 514 | struct libaio_options *o = td->eo; |
e9f6567a DLM |
515 | struct cmdprio *cmdprio = &o->cmdprio; |
516 | int ret; | |
2866c82d | 517 | |
acd45e02 | 518 | ld = calloc(1, sizeof(*ld)); |
c1db2dce | 519 | |
acd45e02 JA |
520 | ld->entries = td->o.iodepth; |
521 | ld->is_pow2 = is_power_of_2(ld->entries); | |
522 | ld->aio_events = calloc(ld->entries, sizeof(struct io_event)); | |
523 | ld->iocbs = calloc(ld->entries, sizeof(struct iocb *)); | |
524 | ld->io_us = calloc(ld->entries, sizeof(struct io_u *)); | |
755200a3 | 525 | |
565e784d | 526 | td->io_ops_data = ld; |
e9f6567a DLM |
527 | |
528 | ret = fio_cmdprio_init(td, cmdprio, &ld->use_cmdprio); | |
529 | if (ret) { | |
b2a432bf PC |
530 | td_verror(td, EINVAL, "fio_libaio_init"); |
531 | return 1; | |
532 | } | |
e9f6567a | 533 | |
2866c82d JA |
534 | return 0; |
535 | } | |
536 | ||
5a8a6a03 | 537 | FIO_STATIC struct ioengine_ops ioengine = { |
de890a1e SL |
538 | .name = "libaio", |
539 | .version = FIO_IOOPS_VERSION, | |
04ba61df | 540 | .flags = FIO_ASYNCIO_SYNC_TRIM, |
de890a1e | 541 | .init = fio_libaio_init, |
2041bd34 | 542 | .post_init = fio_libaio_post_init, |
de890a1e SL |
543 | .prep = fio_libaio_prep, |
544 | .queue = fio_libaio_queue, | |
545 | .commit = fio_libaio_commit, | |
546 | .cancel = fio_libaio_cancel, | |
547 | .getevents = fio_libaio_getevents, | |
548 | .event = fio_libaio_event, | |
549 | .cleanup = fio_libaio_cleanup, | |
550 | .open_file = generic_open_file, | |
551 | .close_file = generic_close_file, | |
552 | .get_file_size = generic_get_file_size, | |
553 | .options = options, | |
554 | .option_struct_size = sizeof(struct libaio_options), | |
2866c82d | 555 | }; |
34cfcdaf | 556 | |
5f350952 JA |
557 | static void fio_init fio_libaio_register(void) |
558 | { | |
559 | register_ioengine(&ioengine); | |
560 | } | |
561 | ||
562 | static void fio_exit fio_libaio_unregister(void) | |
563 | { | |
564 | unregister_ioengine(&ioengine); | |
565 | } |