Commit | Line | Data |
---|---|---|
ebac4655 JA |
1 | /* |
2 | * The io parts of the fio tool, includes workers for sync and mmap'ed | |
3 | * io, as well as both posix and linux libaio support. | |
4 | * | |
5 | * sync io is implemented on top of aio. | |
6 | * | |
7 | * This is not really specific to fio, if the get_io_u/put_io_u and | |
8 | * structures was pulled into this as well it would be a perfectly | |
9 | * generic io engine that could be used for other projects. | |
10 | * | |
11 | */ | |
12 | #include <stdio.h> | |
13 | #include <stdlib.h> | |
14 | #include <unistd.h> | |
5c4e1dbc | 15 | #include <string.h> |
2866c82d | 16 | #include <dlfcn.h> |
ecc314ba | 17 | #include <fcntl.h> |
0c6e7517 | 18 | #include <assert.h> |
8c16d840 | 19 | |
ebac4655 | 20 | #include "fio.h" |
7c9b1bce | 21 | #include "diskutil.h" |
ebac4655 | 22 | |
01743ee1 | 23 | static FLIST_HEAD(engine_list); |
5f350952 | 24 | |
1cc954ba | 25 | static bool check_engine_ops(struct ioengine_ops *ops) |
8c16d840 | 26 | { |
5f350952 | 27 | if (ops->version != FIO_IOOPS_VERSION) { |
5ec10eaa JA |
28 | log_err("bad ioops version %d (want %d)\n", ops->version, |
29 | FIO_IOOPS_VERSION); | |
1cc954ba | 30 | return true; |
5f350952 JA |
31 | } |
32 | ||
36167d82 JA |
33 | if (!ops->queue) { |
34 | log_err("%s: no queue handler\n", ops->name); | |
1cc954ba | 35 | return true; |
36167d82 JA |
36 | } |
37 | ||
38 | /* | |
39 | * sync engines only need a ->queue() | |
40 | */ | |
41 | if (ops->flags & FIO_SYNCIO) | |
1cc954ba | 42 | return false; |
5ec10eaa | 43 | |
1cc954ba JA |
44 | if (!ops->event || !ops->getevents) { |
45 | log_err("%s: no event/getevents handler\n", ops->name); | |
46 | return true; | |
8c16d840 | 47 | } |
5ec10eaa | 48 | |
1cc954ba | 49 | return false; |
8c16d840 JA |
50 | } |
51 | ||
5f350952 | 52 | void unregister_ioengine(struct ioengine_ops *ops) |
ebac4655 | 53 | { |
ee56ad50 | 54 | dprint(FD_IO, "ioengine %s unregistered\n", ops->name); |
01743ee1 JA |
55 | flist_del(&ops->list); |
56 | INIT_FLIST_HEAD(&ops->list); | |
5f350952 JA |
57 | } |
58 | ||
b2fdda43 | 59 | void register_ioengine(struct ioengine_ops *ops) |
5f350952 | 60 | { |
ee56ad50 | 61 | dprint(FD_IO, "ioengine %s registered\n", ops->name); |
01743ee1 JA |
62 | INIT_FLIST_HEAD(&ops->list); |
63 | flist_add_tail(&ops->list, &engine_list); | |
5f350952 JA |
64 | } |
65 | ||
66 | static struct ioengine_ops *find_ioengine(const char *name) | |
67 | { | |
68 | struct ioengine_ops *ops; | |
01743ee1 | 69 | struct flist_head *entry; |
ebac4655 | 70 | |
01743ee1 JA |
71 | flist_for_each(entry, &engine_list) { |
72 | ops = flist_entry(entry, struct ioengine_ops, list); | |
bc5b77a8 | 73 | if (!strcmp(name, ops->name)) |
5f350952 JA |
74 | return ops; |
75 | } | |
76 | ||
77 | return NULL; | |
78 | } | |
79 | ||
80 | static struct ioengine_ops *dlopen_ioengine(struct thread_data *td, | |
81 | const char *engine_lib) | |
82 | { | |
83 | struct ioengine_ops *ops; | |
84 | void *dlhandle; | |
85 | ||
ee56ad50 JA |
86 | dprint(FD_IO, "dload engine %s\n", engine_lib); |
87 | ||
2866c82d JA |
88 | dlerror(); |
89 | dlhandle = dlopen(engine_lib, RTLD_LAZY); | |
d4dbaaa8 | 90 | if (!dlhandle) { |
e1161c32 | 91 | td_vmsg(td, -1, dlerror(), "dlopen"); |
d4dbaaa8 JA |
92 | return NULL; |
93 | } | |
8756e4d4 | 94 | |
da51c050 JA |
95 | /* |
96 | * Unlike the included modules, external engines should have a | |
97 | * non-static ioengine structure that we can reference. | |
98 | */ | |
0abea0b7 DM |
99 | ops = dlsym(dlhandle, engine_lib); |
100 | if (!ops) | |
101 | ops = dlsym(dlhandle, "ioengine"); | |
a8075704 DG |
102 | |
103 | /* | |
104 | * For some external engines (like C++ ones) it is not that trivial | |
105 | * to provide a non-static ionengine structure that we can reference. | |
106 | * Instead we call a method which allocates the required ioengine | |
107 | * structure. | |
108 | */ | |
109 | if (!ops) { | |
110 | get_ioengine_t get_ioengine = dlsym(dlhandle, "get_ioengine"); | |
111 | ||
112 | if (get_ioengine) | |
113 | get_ioengine(&ops); | |
114 | } | |
115 | ||
d4dbaaa8 | 116 | if (!ops) { |
e1161c32 | 117 | td_vmsg(td, -1, dlerror(), "dlsym"); |
d4dbaaa8 JA |
118 | dlclose(dlhandle); |
119 | return NULL; | |
120 | } | |
8756e4d4 | 121 | |
5f350952 JA |
122 | ops->dlhandle = dlhandle; |
123 | return ops; | |
124 | } | |
125 | ||
126 | struct ioengine_ops *load_ioengine(struct thread_data *td, const char *name) | |
127 | { | |
128 | struct ioengine_ops *ops, *ret; | |
129 | char engine[16]; | |
130 | ||
ee56ad50 JA |
131 | dprint(FD_IO, "load ioengine %s\n", name); |
132 | ||
5f350952 JA |
133 | strncpy(engine, name, sizeof(engine) - 1); |
134 | ||
135 | /* | |
136 | * linux libaio has alias names, so convert to what we want | |
137 | */ | |
138 | if (!strncmp(engine, "linuxaio", 8) || !strncmp(engine, "aio", 3)) | |
139 | strcpy(engine, "libaio"); | |
140 | ||
141 | ops = find_ioengine(engine); | |
142 | if (!ops) | |
143 | ops = dlopen_ioengine(td, name); | |
144 | ||
145 | if (!ops) { | |
146 | log_err("fio: engine %s not loadable\n", name); | |
b902ceb5 JA |
147 | return NULL; |
148 | } | |
149 | ||
8c16d840 JA |
150 | /* |
151 | * Check that the required methods are there. | |
152 | */ | |
5f350952 | 153 | if (check_engine_ops(ops)) |
8c16d840 | 154 | return NULL; |
8c16d840 | 155 | |
84585003 JA |
156 | ret = malloc(sizeof(*ret)); |
157 | memcpy(ret, ops, sizeof(*ret)); | |
158 | ret->data = NULL; | |
84585003 JA |
159 | |
160 | return ret; | |
8756e4d4 JA |
161 | } |
162 | ||
de890a1e SL |
163 | /* |
164 | * For cleaning up an ioengine which never made it to init(). | |
165 | */ | |
166 | void free_ioengine(struct thread_data *td) | |
8756e4d4 | 167 | { |
de890a1e | 168 | dprint(FD_IO, "free ioengine %s\n", td->io_ops->name); |
ee56ad50 | 169 | |
de890a1e SL |
170 | if (td->eo && td->io_ops->options) { |
171 | options_free(td->io_ops->options, td->eo); | |
172 | free(td->eo); | |
173 | td->eo = NULL; | |
2992b059 | 174 | } |
b990b5c0 | 175 | |
5f350952 JA |
176 | if (td->io_ops->dlhandle) |
177 | dlclose(td->io_ops->dlhandle); | |
178 | ||
84585003 JA |
179 | free(td->io_ops); |
180 | td->io_ops = NULL; | |
b990b5c0 | 181 | } |
10ba535a | 182 | |
de890a1e SL |
183 | void close_ioengine(struct thread_data *td) |
184 | { | |
185 | dprint(FD_IO, "close ioengine %s\n", td->io_ops->name); | |
186 | ||
187 | if (td->io_ops->cleanup) { | |
188 | td->io_ops->cleanup(td); | |
189 | td->io_ops->data = NULL; | |
190 | } | |
191 | ||
192 | free_ioengine(td); | |
193 | } | |
194 | ||
10ba535a JA |
195 | int td_io_prep(struct thread_data *td, struct io_u *io_u) |
196 | { | |
ee56ad50 | 197 | dprint_io_u(io_u, "prep"); |
7101d9c2 JA |
198 | fio_ro_check(td, io_u); |
199 | ||
4d4e80f2 | 200 | lock_file(td, io_u->file, io_u->ddir); |
b2bd2bd9 | 201 | |
2ba1c290 JA |
202 | if (td->io_ops->prep) { |
203 | int ret = td->io_ops->prep(td, io_u); | |
204 | ||
205 | dprint(FD_IO, "->prep(%p)=%d\n", io_u, ret); | |
b2bd2bd9 | 206 | if (ret) |
4d4e80f2 | 207 | unlock_file(td, io_u->file); |
2ba1c290 JA |
208 | return ret; |
209 | } | |
10ba535a JA |
210 | |
211 | return 0; | |
212 | } | |
213 | ||
e7d2e616 | 214 | int td_io_getevents(struct thread_data *td, unsigned int min, unsigned int max, |
1f440ece | 215 | const struct timespec *t) |
10ba535a | 216 | { |
ee56ad50 | 217 | int r = 0; |
face81b2 | 218 | |
a05d62b2 YR |
219 | /* |
220 | * For ioengine=rdma one side operation RDMA_WRITE or RDMA_READ, | |
221 | * server side gets a message from the client | |
222 | * side that the task is finished, and | |
223 | * td->done is set to 1 after td_io_commit(). In this case, | |
224 | * there is no need to reap complete event in server side. | |
225 | */ | |
226 | if (td->done) | |
227 | return 0; | |
228 | ||
ee56ad50 JA |
229 | if (min > 0 && td->io_ops->commit) { |
230 | r = td->io_ops->commit(td); | |
face81b2 | 231 | if (r < 0) |
ee56ad50 | 232 | goto out; |
face81b2 | 233 | } |
4950421a JA |
234 | if (max > td->cur_depth) |
235 | max = td->cur_depth; | |
236 | if (min > max) | |
237 | max = min; | |
36167d82 | 238 | |
ee56ad50 | 239 | r = 0; |
4950421a | 240 | if (max && td->io_ops->getevents) |
ee56ad50 JA |
241 | r = td->io_ops->getevents(td, min, max, t); |
242 | out: | |
422f9e4b RM |
243 | if (r >= 0) { |
244 | /* | |
3fd9efbc | 245 | * Reflect that our submitted requests were retrieved with |
422f9e4b RM |
246 | * whatever OS async calls are in the underlying engine. |
247 | */ | |
248 | td->io_u_in_flight -= r; | |
838bc709 | 249 | io_u_mark_complete(td, r); |
422f9e4b | 250 | } else |
7c639b14 | 251 | td_verror(td, r, "get_events"); |
f3e11d05 | 252 | |
ee56ad50 JA |
253 | dprint(FD_IO, "getevents: %d\n", r); |
254 | return r; | |
10ba535a JA |
255 | } |
256 | ||
257 | int td_io_queue(struct thread_data *td, struct io_u *io_u) | |
258 | { | |
a9da8ab2 JA |
259 | const enum fio_ddir ddir = acct_ddir(io_u); |
260 | unsigned long buflen = io_u->xfer_buflen; | |
7e77dd02 JA |
261 | int ret; |
262 | ||
ee56ad50 | 263 | dprint_io_u(io_u, "queue"); |
7101d9c2 JA |
264 | fio_ro_check(td, io_u); |
265 | ||
0c6e7517 | 266 | assert((io_u->flags & IO_U_F_FLIGHT) == 0); |
a9da8ab2 | 267 | io_u_set(io_u, IO_U_F_FLIGHT); |
0c6e7517 | 268 | |
d6aed795 | 269 | assert(fio_file_open(io_u->file)); |
3d7b485f | 270 | |
bcd5abfa JA |
271 | /* |
272 | * If using a write iolog, store this entry. | |
273 | */ | |
274 | log_io_u(td, io_u); | |
275 | ||
11786802 JA |
276 | io_u->error = 0; |
277 | io_u->resid = 0; | |
278 | ||
433afcb4 | 279 | if (td->io_ops->flags & FIO_SYNCIO) { |
12d9d841 | 280 | if (fio_fill_issue_time(td)) |
9520ebb9 | 281 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
282 | |
283 | /* | |
284 | * only used for iolog | |
285 | */ | |
286 | if (td->o.read_iolog_file) | |
287 | memcpy(&td->last_issue, &io_u->issue_time, | |
5ec10eaa | 288 | sizeof(struct timeval)); |
433afcb4 JA |
289 | } |
290 | ||
a9da8ab2 JA |
291 | if (ddir_rw(ddir)) { |
292 | td->io_issues[ddir]++; | |
293 | td->io_issue_bytes[ddir] += buflen; | |
50a8ce86 | 294 | td->rate_io_issue_bytes[ddir] += buflen; |
74d6277f | 295 | } |
755200a3 | 296 | |
7e77dd02 | 297 | ret = td->io_ops->queue(td, io_u); |
5aeb77df | 298 | |
4d4e80f2 | 299 | unlock_file(td, io_u->file); |
b2bd2bd9 | 300 | |
a9da8ab2 JA |
301 | if (ret == FIO_Q_BUSY && ddir_rw(ddir)) { |
302 | td->io_issues[ddir]--; | |
303 | td->io_issue_bytes[ddir] -= buflen; | |
50a8ce86 | 304 | td->rate_io_issue_bytes[ddir] -= buflen; |
cd8a19e6 JA |
305 | } |
306 | ||
39a43d34 JA |
307 | /* |
308 | * If an error was seen and the io engine didn't propagate it | |
309 | * back to 'td', do so. | |
310 | */ | |
311 | if (io_u->error && !td->error) | |
312 | td_verror(td, io_u->error, "td_io_queue"); | |
313 | ||
cb211682 JA |
314 | /* |
315 | * Add warning for O_DIRECT so that users have an easier time | |
316 | * spotting potentially bad alignment. If this triggers for the first | |
317 | * IO, then it's likely an alignment problem or because the host fs | |
318 | * does not support O_DIRECT | |
319 | */ | |
ff58fced | 320 | if (io_u->error == EINVAL && td->io_issues[io_u->ddir & 1] == 1 && |
cb211682 | 321 | td->o.odirect) { |
214ac7e0 | 322 | |
cb211682 | 323 | log_info("fio: first direct IO errored. File system may not " |
44cc9c8f JA |
324 | "support direct IO, or iomem_align= is bad. Try " |
325 | "setting direct=0.\n"); | |
cb211682 JA |
326 | } |
327 | ||
77b451cc | 328 | if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) { |
838bc709 JA |
329 | io_u_mark_submit(td, 1); |
330 | io_u_mark_complete(td, 1); | |
331 | } | |
332 | ||
d8005759 | 333 | if (ret == FIO_Q_COMPLETED) { |
ff58fced | 334 | if (ddir_rw(io_u->ddir)) { |
d8005759 JA |
335 | io_u_mark_depth(td, 1); |
336 | td->ts.total_io_u[io_u->ddir]++; | |
6eaf09d6 | 337 | } |
d8005759 | 338 | } else if (ret == FIO_Q_QUEUED) { |
eb7c8ae2 JA |
339 | int r; |
340 | ||
e6727cbd JA |
341 | td->io_u_queued++; |
342 | ||
343 | if (ddir_rw(io_u->ddir)) | |
d8005759 | 344 | td->ts.total_io_u[io_u->ddir]++; |
d8005759 JA |
345 | |
346 | if (td->io_u_queued >= td->o.iodepth_batch) { | |
eb7c8ae2 JA |
347 | r = td_io_commit(td); |
348 | if (r < 0) | |
349 | return r; | |
350 | } | |
351 | } | |
cb5ab512 | 352 | |
433afcb4 | 353 | if ((td->io_ops->flags & FIO_SYNCIO) == 0) { |
12d9d841 | 354 | if (fio_fill_issue_time(td)) |
9520ebb9 | 355 | fio_gettime(&io_u->issue_time, NULL); |
d0c15328 JA |
356 | |
357 | /* | |
358 | * only used for iolog | |
359 | */ | |
360 | if (td->o.read_iolog_file) | |
361 | memcpy(&td->last_issue, &io_u->issue_time, | |
362 | sizeof(struct timeval)); | |
433afcb4 JA |
363 | } |
364 | ||
7e77dd02 | 365 | return ret; |
10ba535a | 366 | } |
8c16d840 JA |
367 | |
368 | int td_io_init(struct thread_data *td) | |
369 | { | |
eeb12160 | 370 | int ret = 0; |
8c16d840 | 371 | |
eeb12160 JA |
372 | if (td->io_ops->init) { |
373 | ret = td->io_ops->init(td); | |
5ec10eaa JA |
374 | if (ret && td->o.iodepth > 1) { |
375 | log_err("fio: io engine init failed. Perhaps try" | |
376 | " reducing io depth?\n"); | |
377 | } | |
7c973896 JA |
378 | if (!td->error) |
379 | td->error = ret; | |
eeb12160 JA |
380 | } |
381 | ||
046395d7 JA |
382 | if (!ret && (td->io_ops->flags & FIO_NOIO)) |
383 | td->flags |= TD_F_NOIO; | |
384 | ||
eeb12160 | 385 | return ret; |
8c16d840 | 386 | } |
755200a3 JA |
387 | |
388 | int td_io_commit(struct thread_data *td) | |
389 | { | |
f3e11d05 JA |
390 | int ret; |
391 | ||
ee56ad50 JA |
392 | dprint(FD_IO, "calling ->commit(), depth %d\n", td->cur_depth); |
393 | ||
d8005759 | 394 | if (!td->cur_depth || !td->io_u_queued) |
e1161c32 | 395 | return 0; |
cb5ab512 | 396 | |
3fd9efbc | 397 | io_u_mark_depth(td, td->io_u_queued); |
d8005759 | 398 | |
f3e11d05 JA |
399 | if (td->io_ops->commit) { |
400 | ret = td->io_ops->commit(td); | |
401 | if (ret) | |
402 | td_verror(td, -ret, "io commit"); | |
403 | } | |
3fd9efbc | 404 | |
422f9e4b RM |
405 | /* |
406 | * Reflect that events were submitted as async IO requests. | |
407 | */ | |
408 | td->io_u_in_flight += td->io_u_queued; | |
409 | td->io_u_queued = 0; | |
755200a3 JA |
410 | |
411 | return 0; | |
412 | } | |
b5af8293 JA |
413 | |
414 | int td_io_open_file(struct thread_data *td, struct fio_file *f) | |
415 | { | |
22a57ba8 JA |
416 | assert(!fio_file_open(f)); |
417 | assert(f->fd == -1); | |
418 | ||
413d6693 JA |
419 | if (td->io_ops->open_file(td, f)) { |
420 | if (td->error == EINVAL && td->o.odirect) | |
421 | log_err("fio: destination does not support O_DIRECT\n"); | |
5ec10eaa JA |
422 | if (td->error == EMFILE) { |
423 | log_err("fio: try reducing/setting openfiles (failed" | |
424 | " at %u of %u)\n", td->nr_open_files, | |
425 | td->o.nr_files); | |
426 | } | |
413d6693 | 427 | |
22a57ba8 JA |
428 | assert(f->fd == -1); |
429 | assert(!fio_file_open(f)); | |
413d6693 JA |
430 | return 1; |
431 | } | |
432 | ||
33c48814 | 433 | fio_file_reset(td, f); |
d6aed795 JA |
434 | fio_file_set_open(f); |
435 | fio_file_clear_closing(f); | |
c97bd0fa | 436 | disk_util_inc(f->du); |
d5707a35 JA |
437 | |
438 | td->nr_open_files++; | |
439 | get_file(f); | |
440 | ||
66159828 JA |
441 | if (f->filetype == FIO_TYPE_PIPE) { |
442 | if (td_random(td)) { | |
443 | log_err("fio: can't seek on pipes (no random io)\n"); | |
444 | goto err; | |
445 | } | |
446 | } | |
447 | ||
413d6693 JA |
448 | if (td->io_ops->flags & FIO_DISKLESSIO) |
449 | goto done; | |
450 | ||
451 | if (td->o.invalidate_cache && file_invalidate_cache(td, f)) | |
452 | goto err; | |
453 | ||
66159828 JA |
454 | if (td->o.fadvise_hint && |
455 | (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { | |
413d6693 JA |
456 | int flags; |
457 | ||
458 | if (td_random(td)) | |
459 | flags = POSIX_FADV_RANDOM; | |
460 | else | |
461 | flags = POSIX_FADV_SEQUENTIAL; | |
462 | ||
ecc314ba | 463 | if (posix_fadvise(f->fd, f->file_offset, f->io_size, flags) < 0) { |
413d6693 JA |
464 | td_verror(td, errno, "fadvise"); |
465 | goto err; | |
466 | } | |
7bb48f84 | 467 | } |
37659335 JA |
468 | #ifdef FIO_HAVE_STREAMID |
469 | if (td->o.fadvise_stream && | |
470 | (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_FILE)) { | |
471 | off_t stream = td->o.fadvise_stream; | |
472 | ||
473 | if (posix_fadvise(f->fd, stream, f->io_size, POSIX_FADV_STREAMID) < 0) { | |
474 | td_verror(td, errno, "fadvise streamid"); | |
475 | goto err; | |
476 | } | |
477 | } | |
478 | #endif | |
a978ba68 | 479 | |
e116f2b9 JA |
480 | #ifdef FIO_OS_DIRECTIO |
481 | /* | |
482 | * Some OS's have a distinct call to mark the file non-buffered, | |
483 | * instead of using O_DIRECT (Solaris) | |
484 | */ | |
485 | if (td->o.odirect) { | |
486 | int ret = fio_set_odirect(f->fd); | |
487 | ||
488 | if (ret) { | |
489 | td_verror(td, ret, "fio_set_odirect"); | |
78e51c72 | 490 | log_err("fio: the file system does not seem to support direct IO\n"); |
e116f2b9 JA |
491 | goto err; |
492 | } | |
493 | } | |
494 | #endif | |
495 | ||
413d6693 | 496 | done: |
f29b25a3 | 497 | log_file(td, f, FIO_LOG_OPEN_FILE); |
413d6693 JA |
498 | return 0; |
499 | err: | |
c97bd0fa | 500 | disk_util_dec(f->du); |
b284075a JA |
501 | if (td->io_ops->close_file) |
502 | td->io_ops->close_file(td, f); | |
7bb48f84 | 503 | return 1; |
b5af8293 JA |
504 | } |
505 | ||
6977bcd0 | 506 | int td_io_close_file(struct thread_data *td, struct fio_file *f) |
b5af8293 | 507 | { |
d6aed795 | 508 | if (!fio_file_closing(f)) |
f29b25a3 JA |
509 | log_file(td, f, FIO_LOG_CLOSE_FILE); |
510 | ||
0ad920e7 JA |
511 | /* |
512 | * mark as closing, do real close when last io on it has completed | |
513 | */ | |
d6aed795 | 514 | fio_file_set_closing(f); |
0ad920e7 | 515 | |
c97bd0fa | 516 | disk_util_dec(f->du); |
cba5243b JA |
517 | |
518 | if (td->o.file_lock_mode != FILE_LOCK_NONE) | |
519 | unlock_file_all(td, f); | |
29c1349f | 520 | |
6977bcd0 | 521 | return put_file(td, f); |
b5af8293 | 522 | } |
df9c26b1 | 523 | |
38ef9c90 CF |
524 | int td_io_unlink_file(struct thread_data *td, struct fio_file *f) |
525 | { | |
526 | if (td->io_ops->unlink_file) | |
527 | return td->io_ops->unlink_file(td, f); | |
528 | else | |
529 | return unlink(f->file_name); | |
530 | } | |
531 | ||
df9c26b1 JA |
532 | int td_io_get_file_size(struct thread_data *td, struct fio_file *f) |
533 | { | |
534 | if (!td->io_ops->get_file_size) | |
535 | return 0; | |
536 | ||
537 | return td->io_ops->get_file_size(td, f); | |
538 | } | |
44f29692 | 539 | |
effd6ff0 JA |
540 | static int do_sync_file_range(const struct thread_data *td, |
541 | struct fio_file *f) | |
44f29692 JA |
542 | { |
543 | off64_t offset, nbytes; | |
544 | ||
545 | offset = f->first_write; | |
546 | nbytes = f->last_write - f->first_write; | |
547 | ||
3843deb3 JA |
548 | if (!nbytes) |
549 | return 0; | |
44f29692 | 550 | |
3843deb3 | 551 | return sync_file_range(f->fd, offset, nbytes, td->o.sync_file_range); |
44f29692 | 552 | } |
0a28ecda | 553 | |
effd6ff0 | 554 | int do_io_u_sync(const struct thread_data *td, struct io_u *io_u) |
0a28ecda JA |
555 | { |
556 | int ret; | |
557 | ||
558 | if (io_u->ddir == DDIR_SYNC) { | |
559 | ret = fsync(io_u->file->fd); | |
560 | } else if (io_u->ddir == DDIR_DATASYNC) { | |
67bf9823 | 561 | #ifdef CONFIG_FDATASYNC |
0a28ecda JA |
562 | ret = fdatasync(io_u->file->fd); |
563 | #else | |
564 | ret = io_u->xfer_buflen; | |
565 | io_u->error = EINVAL; | |
566 | #endif | |
567 | } else if (io_u->ddir == DDIR_SYNC_FILE_RANGE) | |
568 | ret = do_sync_file_range(td, io_u->file); | |
569 | else { | |
570 | ret = io_u->xfer_buflen; | |
571 | io_u->error = EINVAL; | |
572 | } | |
573 | ||
cb849a79 JA |
574 | if (ret < 0) |
575 | io_u->error = errno; | |
576 | ||
0a28ecda JA |
577 | return ret; |
578 | } | |
a5f3027c | 579 | |
effd6ff0 | 580 | int do_io_u_trim(const struct thread_data *td, struct io_u *io_u) |
a5f3027c JA |
581 | { |
582 | #ifndef FIO_HAVE_TRIM | |
583 | io_u->error = EINVAL; | |
ff58fced | 584 | return 0; |
a5f3027c JA |
585 | #else |
586 | struct fio_file *f = io_u->file; | |
587 | int ret; | |
588 | ||
c6404a44 | 589 | ret = os_trim(f->fd, io_u->offset, io_u->xfer_buflen); |
a5f3027c | 590 | if (!ret) |
3fd9efbc | 591 | return io_u->xfer_buflen; |
a5f3027c | 592 | |
ff58fced JA |
593 | io_u->error = ret; |
594 | return 0; | |
a5f3027c JA |
595 | #endif |
596 | } | |
de890a1e SL |
597 | |
598 | int fio_show_ioengine_help(const char *engine) | |
599 | { | |
600 | struct flist_head *entry; | |
601 | struct thread_data td; | |
602 | char *sep; | |
603 | int ret = 1; | |
604 | ||
605 | if (!engine || !*engine) { | |
606 | log_info("Available IO engines:\n"); | |
607 | flist_for_each(entry, &engine_list) { | |
608 | td.io_ops = flist_entry(entry, struct ioengine_ops, | |
609 | list); | |
610 | log_info("\t%s\n", td.io_ops->name); | |
611 | } | |
612 | return 0; | |
613 | } | |
614 | sep = strchr(engine, ','); | |
615 | if (sep) { | |
616 | *sep = 0; | |
617 | sep++; | |
618 | } | |
619 | ||
620 | memset(&td, 0, sizeof(td)); | |
621 | ||
622 | td.io_ops = load_ioengine(&td, engine); | |
623 | if (!td.io_ops) { | |
624 | log_info("IO engine %s not found\n", engine); | |
625 | return 1; | |
626 | } | |
627 | ||
628 | if (td.io_ops->options) | |
629 | ret = show_cmd_help(td.io_ops->options, sep); | |
630 | else | |
631 | log_info("IO engine %s has no options\n", td.io_ops->name); | |
632 | ||
633 | free_ioengine(&td); | |
634 | ||
635 | return ret; | |
636 | } |