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