Commit | Line | Data |
---|---|---|
52885fa2 | 1 | /* |
bffad86f | 2 | * io_uring engine |
52885fa2 | 3 | * |
bffad86f | 4 | * IO engine using the new native Linux aio io_uring interface. See: |
a90cd050 | 5 | * |
bffad86f | 6 | * http://git.kernel.dk/cgit/linux-block/log/?h=io_uring |
52885fa2 JA |
7 | * |
8 | */ | |
9 | #include <stdlib.h> | |
10 | #include <unistd.h> | |
11 | #include <errno.h> | |
52885fa2 JA |
12 | #include <sys/time.h> |
13 | #include <sys/resource.h> | |
14 | ||
15 | #include "../fio.h" | |
16 | #include "../lib/pow2.h" | |
17 | #include "../optgroup.h" | |
18 | #include "../lib/memalign.h" | |
b87aa01a | 19 | #include "../lib/fls.h" |
52885fa2 | 20 | |
bffad86f | 21 | #ifdef ARCH_HAVE_IOURING |
52885fa2 | 22 | |
57fa61f0 | 23 | #include "../lib/types.h" |
bffad86f | 24 | #include "../os/io_uring.h" |
9a2d78b3 | 25 | |
bffad86f | 26 | struct io_sq_ring { |
e2239016 JA |
27 | unsigned *head; |
28 | unsigned *tail; | |
29 | unsigned *ring_mask; | |
30 | unsigned *ring_entries; | |
31 | unsigned *flags; | |
32 | unsigned *array; | |
52885fa2 JA |
33 | }; |
34 | ||
bffad86f | 35 | struct io_cq_ring { |
e2239016 JA |
36 | unsigned *head; |
37 | unsigned *tail; | |
38 | unsigned *ring_mask; | |
39 | unsigned *ring_entries; | |
f0403f94 | 40 | struct io_uring_cqe *cqes; |
9a2d78b3 JA |
41 | }; |
42 | ||
bffad86f | 43 | struct ioring_mmap { |
9a2d78b3 JA |
44 | void *ptr; |
45 | size_t len; | |
52885fa2 JA |
46 | }; |
47 | ||
bffad86f | 48 | struct ioring_data { |
9a2d78b3 JA |
49 | int ring_fd; |
50 | ||
52885fa2 JA |
51 | struct io_u **io_us; |
52 | struct io_u **io_u_index; | |
53 | ||
bffad86f | 54 | struct io_sq_ring sq_ring; |
f0403f94 | 55 | struct io_uring_sqe *sqes; |
9a2d78b3 | 56 | struct iovec *iovecs; |
b87aa01a | 57 | unsigned sq_ring_mask; |
52885fa2 | 58 | |
bffad86f | 59 | struct io_cq_ring cq_ring; |
b87aa01a | 60 | unsigned cq_ring_mask; |
52885fa2 JA |
61 | |
62 | int queued; | |
63 | int cq_ring_off; | |
b87aa01a | 64 | unsigned iodepth; |
96563db9 JA |
65 | |
66 | uint64_t cachehit; | |
67 | uint64_t cachemiss; | |
9a2d78b3 | 68 | |
bffad86f | 69 | struct ioring_mmap mmap[3]; |
52885fa2 JA |
70 | }; |
71 | ||
bffad86f | 72 | struct ioring_options { |
52885fa2 JA |
73 | void *pad; |
74 | unsigned int hipri; | |
75 | unsigned int fixedbufs; | |
2ea53ca3 JA |
76 | unsigned int sqpoll_set; |
77 | unsigned int sqpoll_cpu; | |
52885fa2 JA |
78 | }; |
79 | ||
2ea53ca3 | 80 | static int fio_ioring_sqpoll_cb(void *data, unsigned long long *val) |
a90cd050 | 81 | { |
bffad86f | 82 | struct ioring_options *o = data; |
a90cd050 | 83 | |
2ea53ca3 JA |
84 | o->sqpoll_cpu = *val; |
85 | o->sqpoll_set = 1; | |
a90cd050 JA |
86 | return 0; |
87 | } | |
88 | ||
52885fa2 JA |
89 | static struct fio_option options[] = { |
90 | { | |
91 | .name = "hipri", | |
92 | .lname = "High Priority", | |
93 | .type = FIO_OPT_STR_SET, | |
bffad86f | 94 | .off1 = offsetof(struct ioring_options, hipri), |
52885fa2 JA |
95 | .help = "Use polled IO completions", |
96 | .category = FIO_OPT_C_ENGINE, | |
97 | .group = FIO_OPT_G_LIBAIO, | |
98 | }, | |
99 | { | |
100 | .name = "fixedbufs", | |
101 | .lname = "Fixed (pre-mapped) IO buffers", | |
102 | .type = FIO_OPT_STR_SET, | |
bffad86f | 103 | .off1 = offsetof(struct ioring_options, fixedbufs), |
52885fa2 JA |
104 | .help = "Pre map IO buffers", |
105 | .category = FIO_OPT_C_ENGINE, | |
106 | .group = FIO_OPT_G_LIBAIO, | |
107 | }, | |
771c9901 JA |
108 | { |
109 | .name = "sqthread_poll", | |
110 | .lname = "Kernel SQ thread should poll", | |
2ea53ca3 JA |
111 | .type = FIO_OPT_INT, |
112 | .cb = fio_ioring_sqpoll_cb, | |
113 | .help = "Offload submission to kernel thread", | |
a90cd050 JA |
114 | .category = FIO_OPT_C_ENGINE, |
115 | .group = FIO_OPT_G_LIBAIO, | |
116 | }, | |
52885fa2 JA |
117 | { |
118 | .name = NULL, | |
119 | }, | |
120 | }; | |
121 | ||
bffad86f | 122 | static int io_uring_enter(struct ioring_data *ld, unsigned int to_submit, |
52885fa2 JA |
123 | unsigned int min_complete, unsigned int flags) |
124 | { | |
9a2d78b3 JA |
125 | return syscall(__NR_sys_io_uring_enter, ld->ring_fd, to_submit, |
126 | min_complete, flags); | |
52885fa2 JA |
127 | } |
128 | ||
bffad86f | 129 | static int fio_ioring_prep(struct thread_data *td, struct io_u *io_u) |
52885fa2 | 130 | { |
bffad86f | 131 | struct ioring_data *ld = td->io_ops_data; |
cfcc8564 | 132 | struct ioring_options *o = td->eo; |
52885fa2 | 133 | struct fio_file *f = io_u->file; |
f0403f94 | 134 | struct io_uring_sqe *sqe; |
52885fa2 | 135 | |
f0403f94 JA |
136 | sqe = &ld->sqes[io_u->index]; |
137 | sqe->fd = f->fd; | |
138 | sqe->flags = 0; | |
139 | sqe->ioprio = 0; | |
2ea53ca3 | 140 | sqe->buf_index = 0; |
52885fa2 | 141 | |
e3970057 | 142 | if (io_u->ddir == DDIR_READ || io_u->ddir == DDIR_WRITE) { |
2ea53ca3 JA |
143 | if (io_u->ddir == DDIR_READ) |
144 | sqe->opcode = IORING_OP_READV; | |
145 | else | |
146 | sqe->opcode = IORING_OP_WRITEV; | |
147 | ||
f0403f94 | 148 | if (o->fixedbufs) { |
2ea53ca3 | 149 | sqe->flags |= IOSQE_FIXED_BUFFER; |
f0403f94 JA |
150 | sqe->addr = io_u->xfer_buf; |
151 | sqe->len = io_u->xfer_buflen; | |
2ea53ca3 | 152 | sqe->buf_index = io_u->index; |
cfcc8564 | 153 | } else { |
f0403f94 JA |
154 | sqe->addr = &ld->iovecs[io_u->index]; |
155 | sqe->len = 1; | |
cfcc8564 | 156 | } |
f0403f94 | 157 | sqe->off = io_u->offset; |
52885fa2 | 158 | } else if (ddir_sync(io_u->ddir)) |
f0403f94 | 159 | sqe->opcode = IORING_OP_FSYNC; |
52885fa2 | 160 | |
a7086591 | 161 | sqe->data = (unsigned long) io_u; |
52885fa2 JA |
162 | return 0; |
163 | } | |
164 | ||
bffad86f | 165 | static struct io_u *fio_ioring_event(struct thread_data *td, int event) |
52885fa2 | 166 | { |
bffad86f | 167 | struct ioring_data *ld = td->io_ops_data; |
f0403f94 | 168 | struct io_uring_cqe *cqe; |
52885fa2 | 169 | struct io_u *io_u; |
b87aa01a | 170 | unsigned index; |
52885fa2 | 171 | |
b87aa01a | 172 | index = (event + ld->cq_ring_off) & ld->cq_ring_mask; |
52885fa2 | 173 | |
f0403f94 | 174 | cqe = &ld->cq_ring.cqes[index]; |
a7086591 | 175 | io_u = (struct io_u *) cqe->data; |
52885fa2 | 176 | |
f0403f94 JA |
177 | if (cqe->res != io_u->xfer_buflen) { |
178 | if (cqe->res > io_u->xfer_buflen) | |
179 | io_u->error = -cqe->res; | |
52885fa2 | 180 | else |
f0403f94 | 181 | io_u->resid = io_u->xfer_buflen - cqe->res; |
52885fa2 JA |
182 | } else |
183 | io_u->error = 0; | |
184 | ||
96563db9 | 185 | if (io_u->ddir == DDIR_READ) { |
f0403f94 | 186 | if (cqe->flags & IOCQE_FLAG_CACHEHIT) |
96563db9 JA |
187 | ld->cachehit++; |
188 | else | |
189 | ld->cachemiss++; | |
190 | } | |
191 | ||
52885fa2 JA |
192 | return io_u; |
193 | } | |
194 | ||
bffad86f | 195 | static int fio_ioring_cqring_reap(struct thread_data *td, unsigned int events, |
52885fa2 JA |
196 | unsigned int max) |
197 | { | |
bffad86f JA |
198 | struct ioring_data *ld = td->io_ops_data; |
199 | struct io_cq_ring *ring = &ld->cq_ring; | |
e2239016 | 200 | unsigned head, reaped = 0; |
52885fa2 | 201 | |
9a2d78b3 | 202 | head = *ring->head; |
52885fa2 JA |
203 | do { |
204 | read_barrier(); | |
9a2d78b3 | 205 | if (head == *ring->tail) |
52885fa2 JA |
206 | break; |
207 | reaped++; | |
208 | head++; | |
52885fa2 JA |
209 | } while (reaped + events < max); |
210 | ||
9a2d78b3 | 211 | *ring->head = head; |
52885fa2 JA |
212 | write_barrier(); |
213 | return reaped; | |
214 | } | |
215 | ||
bffad86f JA |
216 | static int fio_ioring_getevents(struct thread_data *td, unsigned int min, |
217 | unsigned int max, const struct timespec *t) | |
52885fa2 | 218 | { |
bffad86f | 219 | struct ioring_data *ld = td->io_ops_data; |
52885fa2 | 220 | unsigned actual_min = td->o.iodepth_batch_complete_min == 0 ? 0 : min; |
bffad86f JA |
221 | struct ioring_options *o = td->eo; |
222 | struct io_cq_ring *ring = &ld->cq_ring; | |
b87aa01a JA |
223 | unsigned events = 0; |
224 | int r; | |
52885fa2 | 225 | |
9a2d78b3 | 226 | ld->cq_ring_off = *ring->head; |
52885fa2 | 227 | do { |
bffad86f | 228 | r = fio_ioring_cqring_reap(td, events, max); |
52885fa2 JA |
229 | if (r) { |
230 | events += r; | |
231 | continue; | |
232 | } | |
233 | ||
2ea53ca3 | 234 | if (!o->sqpoll_set) { |
9a2d78b3 JA |
235 | r = io_uring_enter(ld, 0, actual_min, |
236 | IORING_ENTER_GETEVENTS); | |
771c9901 JA |
237 | if (r < 0) { |
238 | if (errno == EAGAIN) | |
239 | continue; | |
9a2d78b3 | 240 | td_verror(td, errno, "io_uring_enter"); |
771c9901 JA |
241 | break; |
242 | } | |
52885fa2 JA |
243 | } |
244 | } while (events < min); | |
245 | ||
246 | return r < 0 ? r : events; | |
247 | } | |
248 | ||
bffad86f JA |
249 | static enum fio_q_status fio_ioring_queue(struct thread_data *td, |
250 | struct io_u *io_u) | |
52885fa2 | 251 | { |
bffad86f JA |
252 | struct ioring_data *ld = td->io_ops_data; |
253 | struct io_sq_ring *ring = &ld->sq_ring; | |
52885fa2 JA |
254 | unsigned tail, next_tail; |
255 | ||
256 | fio_ro_check(td, io_u); | |
257 | ||
b87aa01a | 258 | if (ld->queued == ld->iodepth) |
52885fa2 JA |
259 | return FIO_Q_BUSY; |
260 | ||
52885fa2 JA |
261 | if (io_u->ddir == DDIR_TRIM) { |
262 | if (ld->queued) | |
263 | return FIO_Q_BUSY; | |
264 | ||
265 | do_io_u_trim(td, io_u); | |
266 | io_u_mark_submit(td, 1); | |
267 | io_u_mark_complete(td, 1); | |
268 | return FIO_Q_COMPLETED; | |
269 | } | |
270 | ||
9a2d78b3 | 271 | tail = *ring->tail; |
52885fa2 | 272 | next_tail = tail + 1; |
52885fa2 | 273 | read_barrier(); |
9a2d78b3 | 274 | if (next_tail == *ring->head) |
52885fa2 JA |
275 | return FIO_Q_BUSY; |
276 | ||
b87aa01a | 277 | ring->array[tail & ld->sq_ring_mask] = io_u->index; |
9a2d78b3 | 278 | *ring->tail = next_tail; |
52885fa2 JA |
279 | write_barrier(); |
280 | ||
281 | ld->queued++; | |
282 | return FIO_Q_QUEUED; | |
283 | } | |
284 | ||
bffad86f | 285 | static void fio_ioring_queued(struct thread_data *td, int start, int nr) |
52885fa2 | 286 | { |
bffad86f | 287 | struct ioring_data *ld = td->io_ops_data; |
52885fa2 JA |
288 | struct timespec now; |
289 | ||
290 | if (!fio_fill_issue_time(td)) | |
291 | return; | |
292 | ||
293 | fio_gettime(&now, NULL); | |
294 | ||
295 | while (nr--) { | |
bffad86f | 296 | struct io_sq_ring *ring = &ld->sq_ring; |
9a2d78b3 | 297 | int index = ring->array[start & ld->sq_ring_mask]; |
f8289afc | 298 | struct io_u *io_u = ld->io_u_index[index]; |
52885fa2 JA |
299 | |
300 | memcpy(&io_u->issue_time, &now, sizeof(now)); | |
301 | io_u_queued(td, io_u); | |
302 | ||
303 | start++; | |
52885fa2 JA |
304 | } |
305 | } | |
306 | ||
bffad86f | 307 | static int fio_ioring_commit(struct thread_data *td) |
52885fa2 | 308 | { |
bffad86f JA |
309 | struct ioring_data *ld = td->io_ops_data; |
310 | struct ioring_options *o = td->eo; | |
52885fa2 JA |
311 | int ret; |
312 | ||
313 | if (!ld->queued) | |
314 | return 0; | |
315 | ||
771c9901 | 316 | /* Nothing to do */ |
2ea53ca3 | 317 | if (o->sqpoll_set) { |
bffad86f | 318 | struct io_sq_ring *ring = &ld->sq_ring; |
4cdbc048 | 319 | |
2ea53ca3 | 320 | read_barrier(); |
9a2d78b3 JA |
321 | if (*ring->flags & IORING_SQ_NEED_WAKEUP) |
322 | io_uring_enter(ld, ld->queued, 0, 0); | |
771c9901 JA |
323 | ld->queued = 0; |
324 | return 0; | |
325 | } | |
326 | ||
52885fa2 | 327 | do { |
9a2d78b3 | 328 | unsigned start = *ld->sq_ring.head; |
52885fa2 JA |
329 | long nr = ld->queued; |
330 | ||
9a2d78b3 | 331 | ret = io_uring_enter(ld, nr, 0, IORING_ENTER_GETEVENTS); |
52885fa2 | 332 | if (ret > 0) { |
bffad86f | 333 | fio_ioring_queued(td, start, ret); |
52885fa2 JA |
334 | io_u_mark_submit(td, ret); |
335 | ||
336 | ld->queued -= ret; | |
337 | ret = 0; | |
a90cd050 JA |
338 | } else if (!ret) { |
339 | io_u_mark_submit(td, ret); | |
52885fa2 | 340 | continue; |
a90cd050 JA |
341 | } else { |
342 | if (errno == EAGAIN) { | |
bffad86f | 343 | ret = fio_ioring_cqring_reap(td, 0, ld->queued); |
a90cd050 JA |
344 | if (ret) |
345 | continue; | |
346 | /* Shouldn't happen */ | |
347 | usleep(1); | |
348 | continue; | |
52885fa2 | 349 | } |
9a2d78b3 | 350 | td_verror(td, errno, "io_uring_enter submit"); |
52885fa2 | 351 | break; |
a90cd050 | 352 | } |
52885fa2 JA |
353 | } while (ld->queued); |
354 | ||
355 | return ret; | |
356 | } | |
357 | ||
bffad86f | 358 | static void fio_ioring_unmap(struct ioring_data *ld) |
52885fa2 | 359 | { |
9a2d78b3 | 360 | int i; |
52885fa2 | 361 | |
9a2d78b3 JA |
362 | for (i = 0; i < ARRAY_SIZE(ld->mmap); i++) |
363 | munmap(ld->mmap[i].ptr, ld->mmap[i].len); | |
364 | close(ld->ring_fd); | |
b87aa01a JA |
365 | } |
366 | ||
bffad86f | 367 | static void fio_ioring_cleanup(struct thread_data *td) |
52885fa2 | 368 | { |
bffad86f | 369 | struct ioring_data *ld = td->io_ops_data; |
52885fa2 JA |
370 | |
371 | if (ld) { | |
96563db9 JA |
372 | td->ts.cachehit += ld->cachehit; |
373 | td->ts.cachemiss += ld->cachemiss; | |
374 | ||
52885fa2 | 375 | if (!(td->flags & TD_F_CHILD)) |
bffad86f | 376 | fio_ioring_unmap(ld); |
9a2d78b3 | 377 | |
52885fa2 JA |
378 | free(ld->io_u_index); |
379 | free(ld->io_us); | |
9a2d78b3 | 380 | free(ld->iovecs); |
52885fa2 JA |
381 | free(ld); |
382 | } | |
383 | } | |
384 | ||
bffad86f | 385 | static int fio_ioring_mmap(struct ioring_data *ld, struct io_uring_params *p) |
9a2d78b3 | 386 | { |
bffad86f JA |
387 | struct io_sq_ring *sring = &ld->sq_ring; |
388 | struct io_cq_ring *cring = &ld->cq_ring; | |
9a2d78b3 JA |
389 | void *ptr; |
390 | ||
e2239016 | 391 | ld->mmap[0].len = p->sq_off.array + p->sq_entries * sizeof(__u32); |
9a2d78b3 JA |
392 | ptr = mmap(0, ld->mmap[0].len, PROT_READ | PROT_WRITE, |
393 | MAP_SHARED | MAP_POPULATE, ld->ring_fd, | |
394 | IORING_OFF_SQ_RING); | |
395 | ld->mmap[0].ptr = ptr; | |
396 | sring->head = ptr + p->sq_off.head; | |
397 | sring->tail = ptr + p->sq_off.tail; | |
398 | sring->ring_mask = ptr + p->sq_off.ring_mask; | |
399 | sring->ring_entries = ptr + p->sq_off.ring_entries; | |
400 | sring->flags = ptr + p->sq_off.flags; | |
ac122fea | 401 | sring->array = ptr + p->sq_off.array; |
9a2d78b3 JA |
402 | ld->sq_ring_mask = *sring->ring_mask; |
403 | ||
f0403f94 JA |
404 | ld->mmap[1].len = p->sq_entries * sizeof(struct io_uring_sqe); |
405 | ld->sqes = mmap(0, ld->mmap[1].len, PROT_READ | PROT_WRITE, | |
9a2d78b3 | 406 | MAP_SHARED | MAP_POPULATE, ld->ring_fd, |
f0403f94 JA |
407 | IORING_OFF_SQES); |
408 | ld->mmap[1].ptr = ld->sqes; | |
9a2d78b3 | 409 | |
f0403f94 JA |
410 | ld->mmap[2].len = p->cq_off.cqes + |
411 | p->cq_entries * sizeof(struct io_uring_cqe); | |
9a2d78b3 JA |
412 | ptr = mmap(0, ld->mmap[2].len, PROT_READ | PROT_WRITE, |
413 | MAP_SHARED | MAP_POPULATE, ld->ring_fd, | |
414 | IORING_OFF_CQ_RING); | |
415 | ld->mmap[2].ptr = ptr; | |
416 | cring->head = ptr + p->cq_off.head; | |
417 | cring->tail = ptr + p->cq_off.tail; | |
418 | cring->ring_mask = ptr + p->cq_off.ring_mask; | |
419 | cring->ring_entries = ptr + p->cq_off.ring_entries; | |
f0403f94 | 420 | cring->cqes = ptr + p->cq_off.cqes; |
9a2d78b3 JA |
421 | ld->cq_ring_mask = *cring->ring_mask; |
422 | return 0; | |
423 | } | |
424 | ||
bffad86f | 425 | static int fio_ioring_queue_init(struct thread_data *td) |
52885fa2 | 426 | { |
bffad86f JA |
427 | struct ioring_data *ld = td->io_ops_data; |
428 | struct ioring_options *o = td->eo; | |
52885fa2 | 429 | int depth = td->o.iodepth; |
bffad86f | 430 | struct io_uring_params p; |
9a2d78b3 JA |
431 | int ret; |
432 | ||
433 | memset(&p, 0, sizeof(p)); | |
52885fa2 JA |
434 | |
435 | if (o->hipri) | |
bffad86f | 436 | p.flags |= IORING_SETUP_IOPOLL; |
2ea53ca3 JA |
437 | if (o->sqpoll_set) { |
438 | p.flags |= IORING_SETUP_SQPOLL | IORING_SETUP_SQ_AFF; | |
439 | p.sq_thread_cpu = o->sqpoll_cpu; | |
f635f1fb | 440 | } |
a90cd050 | 441 | |
52885fa2 JA |
442 | if (o->fixedbufs) { |
443 | struct rlimit rlim = { | |
444 | .rlim_cur = RLIM_INFINITY, | |
445 | .rlim_max = RLIM_INFINITY, | |
446 | }; | |
447 | ||
448 | setrlimit(RLIMIT_MEMLOCK, &rlim); | |
52885fa2 JA |
449 | } |
450 | ||
2ea53ca3 | 451 | ret = syscall(__NR_sys_io_uring_setup, depth, &p); |
9a2d78b3 JA |
452 | if (ret < 0) |
453 | return ret; | |
454 | ||
455 | ld->ring_fd = ret; | |
2ea53ca3 JA |
456 | |
457 | if (o->fixedbufs) { | |
458 | struct io_uring_register_buffers reg = { | |
459 | .iovecs = ld->iovecs, | |
460 | .nr_iovecs = depth | |
461 | }; | |
462 | ||
463 | ret = syscall(__NR_sys_io_uring_register, ld->ring_fd, | |
464 | IORING_REGISTER_BUFFERS, ®); | |
465 | if (ret < 0) | |
466 | return ret; | |
467 | } | |
468 | ||
bffad86f | 469 | return fio_ioring_mmap(ld, &p); |
52885fa2 JA |
470 | } |
471 | ||
bffad86f | 472 | static int fio_ioring_post_init(struct thread_data *td) |
52885fa2 | 473 | { |
bffad86f | 474 | struct ioring_data *ld = td->io_ops_data; |
52885fa2 | 475 | struct io_u *io_u; |
650346e1 | 476 | int err, i; |
52885fa2 | 477 | |
650346e1 JA |
478 | for (i = 0; i < td->o.iodepth; i++) { |
479 | struct iovec *iov = &ld->iovecs[i]; | |
9a2d78b3 | 480 | |
650346e1 JA |
481 | io_u = ld->io_u_index[i]; |
482 | iov->iov_base = io_u->buf; | |
483 | iov->iov_len = td_max_bs(td); | |
52885fa2 JA |
484 | } |
485 | ||
bffad86f | 486 | err = fio_ioring_queue_init(td); |
52885fa2 | 487 | if (err) { |
d63a472d | 488 | td_verror(td, errno, "io_queue_init"); |
52885fa2 JA |
489 | return 1; |
490 | } | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
9a2d78b3 JA |
495 | static unsigned roundup_pow2(unsigned depth) |
496 | { | |
497 | return 1UL << __fls(depth - 1); | |
498 | } | |
499 | ||
bffad86f | 500 | static int fio_ioring_init(struct thread_data *td) |
52885fa2 | 501 | { |
bffad86f | 502 | struct ioring_data *ld; |
52885fa2 | 503 | |
52885fa2 JA |
504 | ld = calloc(1, sizeof(*ld)); |
505 | ||
b87aa01a JA |
506 | /* ring depth must be a power-of-2 */ |
507 | ld->iodepth = td->o.iodepth; | |
508 | td->o.iodepth = roundup_pow2(td->o.iodepth); | |
509 | ||
52885fa2 JA |
510 | /* io_u index */ |
511 | ld->io_u_index = calloc(td->o.iodepth, sizeof(struct io_u *)); | |
512 | ld->io_us = calloc(td->o.iodepth, sizeof(struct io_u *)); | |
650346e1 | 513 | ld->iovecs = calloc(td->o.iodepth, sizeof(struct iovec)); |
52885fa2 JA |
514 | |
515 | td->io_ops_data = ld; | |
516 | return 0; | |
517 | } | |
518 | ||
bffad86f | 519 | static int fio_ioring_io_u_init(struct thread_data *td, struct io_u *io_u) |
52885fa2 | 520 | { |
bffad86f | 521 | struct ioring_data *ld = td->io_ops_data; |
52885fa2 JA |
522 | |
523 | ld->io_u_index[io_u->index] = io_u; | |
524 | return 0; | |
525 | } | |
526 | ||
527 | static struct ioengine_ops ioengine = { | |
bffad86f | 528 | .name = "io_uring", |
52885fa2 | 529 | .version = FIO_IOOPS_VERSION, |
bffad86f JA |
530 | .init = fio_ioring_init, |
531 | .post_init = fio_ioring_post_init, | |
532 | .io_u_init = fio_ioring_io_u_init, | |
533 | .prep = fio_ioring_prep, | |
534 | .queue = fio_ioring_queue, | |
535 | .commit = fio_ioring_commit, | |
536 | .getevents = fio_ioring_getevents, | |
537 | .event = fio_ioring_event, | |
538 | .cleanup = fio_ioring_cleanup, | |
52885fa2 JA |
539 | .open_file = generic_open_file, |
540 | .close_file = generic_close_file, | |
541 | .get_file_size = generic_get_file_size, | |
542 | .options = options, | |
bffad86f | 543 | .option_struct_size = sizeof(struct ioring_options), |
52885fa2 JA |
544 | }; |
545 | ||
bffad86f | 546 | static void fio_init fio_ioring_register(void) |
52885fa2 | 547 | { |
52885fa2 | 548 | register_ioengine(&ioengine); |
52885fa2 JA |
549 | } |
550 | ||
bffad86f | 551 | static void fio_exit fio_ioring_unregister(void) |
52885fa2 | 552 | { |
52885fa2 | 553 | unregister_ioengine(&ioengine); |
52885fa2 | 554 | } |
1f90e9bb | 555 | #endif |