options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 180                 if (!ret) {
 181                         *odir = '\0';
 182                         ret = bssplit_ddir(td, DDIR_READ, str);
 183                 }
 184         } else {
 185                 char *op;
 186
 187                 op = strdup(str);
 188
 189                 ret = bssplit_ddir(td, DDIR_READ, str);
 190                 if (!ret)
 191                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 192
 193                 free(op);
 194         }
 195
 196         free(p);
 197         return ret;
 198 }
 199
 200 static int str_rw_cb(void *data, const char *str)
 201 {
 202         struct thread_data *td = data;
 203         char *nr = get_opt_postfix(str);
 204
 205         td->o.ddir_seq_nr = 1;
 206         if (nr) {
 207                 td->o.ddir_seq_nr = atoi(nr);
 208                 free(nr);
 209         }
 210
 211         return 0;
 212 }
 213
 214 static int str_mem_cb(void *data, const char *mem)
 215 {
 216         struct thread_data *td = data;
 217
 218         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 219                 td->mmapfile = get_opt_postfix(mem);
 220                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 221                         log_err("fio: mmaphuge:/path/to/file\n");
 222                         return 1;
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 static int str_verify_cb(void *data, const char *mem)
 230 {
 231         struct thread_data *td = data;
 232
 233         if (td->o.verify != VERIFY_CRC32C_INTEL)
 234                 return 0;
 235
 236         if (!crc32c_intel_works()) {
 237                 log_info("fio: System does not support hw accelerated crc32c. Falling back to sw crc32c.\n");
 238                 td->o.verify = VERIFY_CRC32C;
 239         }
 240
 241         return 0;
 242 }
 243
 244 static int fio_clock_source_cb(void *data, const char *str)
 245 {
 246         struct thread_data *td = data;
 247
 248         fio_clock_source = td->o.clocksource;
 249         fio_time_init();
 250         return 0;
 251 }
 252
 253 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 254 {
 255         mlock_size = *val;
 256         return 0;
 257 }
 258
 259 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 260 {
 261         struct thread_data *td = data;
 262
 263         td->o.rwmix[DDIR_READ] = *val;
 264         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 265         return 0;
 266 }
 267
 268 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 269 {
 270         struct thread_data *td = data;
 271
 272         td->o.rwmix[DDIR_WRITE] = *val;
 273         td->o.rwmix[DDIR_READ] = 100 - *val;
 274         return 0;
 275 }
 276
 277 #ifdef FIO_HAVE_IOPRIO
 278 static int str_prioclass_cb(void *data, unsigned long long *val)
 279 {
 280         struct thread_data *td = data;
 281         unsigned short mask;
 282
 283         /*
 284          * mask off old class bits, str_prio_cb() may have set a default class
 285          */
 286         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 287         td->ioprio &= mask;
 288
 289         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 290         td->ioprio_set = 1;
 291         return 0;
 292 }
 293
 294 static int str_prio_cb(void *data, unsigned long long *val)
 295 {
 296         struct thread_data *td = data;
 297
 298         td->ioprio |= *val;
 299
 300         /*
 301          * If no class is set, assume BE
 302          */
 303         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 304                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 305
 306         td->ioprio_set = 1;
 307         return 0;
 308 }
 309 #endif
 310
 311 static int str_exitall_cb(void)
 312 {
 313         exitall_on_terminate = 1;
 314         return 0;
 315 }
 316
 317 #ifdef FIO_HAVE_CPU_AFFINITY
 318 static int str_cpumask_cb(void *data, unsigned long long *val)
 319 {
 320         struct thread_data *td = data;
 321         unsigned int i;
 322         long max_cpu;
 323         int ret;
 324
 325         ret = fio_cpuset_init(&td->o.cpumask);
 326         if (ret < 0) {
 327                 log_err("fio: cpuset_init failed\n");
 328                 td_verror(td, ret, "fio_cpuset_init");
 329                 return 1;
 330         }
 331
 332         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 333
 334         for (i = 0; i < sizeof(int) * 8; i++) {
 335                 if ((1 << i) & *val) {
 336                         if (i > max_cpu) {
 337                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 338                                                                 max_cpu);
 339                                 return 1;
 340                         }
 341                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 342                         fio_cpu_set(&td->o.cpumask, i);
 343                 }
 344         }
 345
 346         td->o.cpumask_set = 1;
 347         return 0;
 348 }
 349
 350 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 351                             const char *input)
 352 {
 353         char *cpu, *str, *p;
 354         long max_cpu;
 355         int ret = 0;
 356
 357         ret = fio_cpuset_init(mask);
 358         if (ret < 0) {
 359                 log_err("fio: cpuset_init failed\n");
 360                 td_verror(td, ret, "fio_cpuset_init");
 361                 return 1;
 362         }
 363
 364         p = str = strdup(input);
 365
 366         strip_blank_front(&str);
 367         strip_blank_end(str);
 368
 369         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 370
 371         while ((cpu = strsep(&str, ",")) != NULL) {
 372                 char *str2, *cpu2;
 373                 int icpu, icpu2;
 374
 375                 if (!strlen(cpu))
 376                         break;
 377
 378                 str2 = cpu;
 379                 icpu2 = -1;
 380                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 381                         if (!strlen(cpu2))
 382                                 break;
 383
 384                         icpu2 = atoi(cpu2);
 385                 }
 386
 387                 icpu = atoi(cpu);
 388                 if (icpu2 == -1)
 389                         icpu2 = icpu;
 390                 while (icpu <= icpu2) {
 391                         if (icpu >= FIO_MAX_CPUS) {
 392                                 log_err("fio: your OS only supports up to"
 393                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 394                                 ret = 1;
 395                                 break;
 396                         }
 397                         if (icpu > max_cpu) {
 398                                 log_err("fio: CPU %d too large (max=%ld)\n",
 399                                                         icpu, max_cpu);
 400                                 ret = 1;
 401                                 break;
 402                         }
 403
 404                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 405                         fio_cpu_set(mask, icpu);
 406                         icpu++;
 407                 }
 408                 if (ret)
 409                         break;
 410         }
 411
 412         free(p);
 413         if (!ret)
 414                 td->o.cpumask_set = 1;
 415         return ret;
 416 }
 417
 418 static int str_cpus_allowed_cb(void *data, const char *input)
 419 {
 420         struct thread_data *td = data;
 421         int ret;
 422
 423         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 424         if (!ret)
 425                 td->o.cpumask_set = 1;
 426
 427         return ret;
 428 }
 429
 430 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 431 {
 432         struct thread_data *td = data;
 433         int ret;
 434
 435         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 436         if (!ret)
 437                 td->o.verify_cpumask_set = 1;
 438
 439         return ret;
 440 }
 441 #endif
 442
 443 #ifdef FIO_HAVE_TRIM
 444 static int str_verify_trim_cb(void *data, unsigned long long *val)
 445 {
 446         struct thread_data *td = data;
 447
 448         td->o.trim_percentage = *val;
 449         return 0;
 450 }
 451 #endif
 452
 453 static int str_fst_cb(void *data, const char *str)
 454 {
 455         struct thread_data *td = data;
 456         char *nr = get_opt_postfix(str);
 457
 458         td->file_service_nr = 1;
 459         if (nr) {
 460                 td->file_service_nr = atoi(nr);
 461                 free(nr);
 462         }
 463
 464         return 0;
 465 }
 466
 467 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 468 static int str_sfr_cb(void *data, const char *str)
 469 {
 470         struct thread_data *td = data;
 471         char *nr = get_opt_postfix(str);
 472
 473         td->sync_file_range_nr = 1;
 474         if (nr) {
 475                 td->sync_file_range_nr = atoi(nr);
 476                 free(nr);
 477         }
 478
 479         return 0;
 480 }
 481 #endif
 482
 483 static int check_dir(struct thread_data *td, char *fname)
 484 {
 485         char file[PATH_MAX], *dir;
 486         int elen = 0;
 487
 488         if (td->o.directory) {
 489                 strcpy(file, td->o.directory);
 490                 strcat(file, "/");
 491                 elen = strlen(file);
 492         }
 493
 494         sprintf(file + elen, "%s", fname);
 495         dir = dirname(file);
 496
 497 #if 0
 498         {
 499         struct stat sb;
 500         /*
 501          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 502          * yet, so we can't do this check right here...
 503          */
 504         if (lstat(dir, &sb) < 0) {
 505                 int ret = errno;
 506
 507                 log_err("fio: %s is not a directory\n", dir);
 508                 td_verror(td, ret, "lstat");
 509                 return 1;
 510         }
 511
 512         if (!S_ISDIR(sb.st_mode)) {
 513                 log_err("fio: %s is not a directory\n", dir);
 514                 return 1;
 515         }
 516         }
 517 #endif
 518
 519         return 0;
 520 }
 521
 522 /*
 523  * Return next file in the string. Files are separated with ':'. If the ':'
 524  * is escaped with a '\', then that ':' is part of the filename and does not
 525  * indicate a new file.
 526  */
 527 static char *get_next_file_name(char **ptr)
 528 {
 529         char *str = *ptr;
 530         char *p, *start;
 531
 532         if (!str || !strlen(str))
 533                 return NULL;
 534
 535         start = str;
 536         do {
 537                 /*
 538                  * No colon, we are done
 539                  */
 540                 p = strchr(str, ':');
 541                 if (!p) {
 542                         *ptr = NULL;
 543                         break;
 544                 }
 545
 546                 /*
 547                  * We got a colon, but it's the first character. Skip and
 548                  * continue
 549                  */
 550                 if (p == start) {
 551                         str = ++start;
 552                         continue;
 553                 }
 554
 555                 if (*(p - 1) != '\\') {
 556                         *p = '\0';
 557                         *ptr = p + 1;
 558                         break;
 559                 }
 560
 561                 memmove(p - 1, p, strlen(p) + 1);
 562                 str = p;
 563         } while (1);
 564
 565         return start;
 566 }
 567
 568 static int str_filename_cb(void *data, const char *input)
 569 {
 570         struct thread_data *td = data;
 571         char *fname, *str, *p;
 572
 573         p = str = strdup(input);
 574
 575         strip_blank_front(&str);
 576         strip_blank_end(str);
 577
 578         if (!td->files_index)
 579                 td->o.nr_files = 0;
 580
 581         while ((fname = get_next_file_name(&str)) != NULL) {
 582                 if (!strlen(fname))
 583                         break;
 584                 if (check_dir(td, fname)) {
 585                         free(p);
 586                         return 1;
 587                 }
 588                 add_file(td, fname);
 589                 td->o.nr_files++;
 590         }
 591
 592         free(p);
 593         return 0;
 594 }
 595
 596 static int str_directory_cb(void *data, const char fio_unused *str)
 597 {
 598         struct thread_data *td = data;
 599         struct stat sb;
 600
 601         if (lstat(td->o.directory, &sb) < 0) {
 602                 int ret = errno;
 603
 604                 log_err("fio: %s is not a directory\n", td->o.directory);
 605                 td_verror(td, ret, "lstat");
 606                 return 1;
 607         }
 608         if (!S_ISDIR(sb.st_mode)) {
 609                 log_err("fio: %s is not a directory\n", td->o.directory);
 610                 return 1;
 611         }
 612
 613         return 0;
 614 }
 615
 616 static int str_opendir_cb(void *data, const char fio_unused *str)
 617 {
 618         struct thread_data *td = data;
 619
 620         if (!td->files_index)
 621                 td->o.nr_files = 0;
 622
 623         return add_dir_files(td, td->o.opendir);
 624 }
 625
 626 static int str_verify_offset_cb(void *data, unsigned long long *off)
 627 {
 628         struct thread_data *td = data;
 629
 630         if (*off && *off < sizeof(struct verify_header)) {
 631                 log_err("fio: verify_offset too small\n");
 632                 return 1;
 633         }
 634
 635         td->o.verify_offset = *off;
 636         return 0;
 637 }
 638
 639 static int str_verify_pattern_cb(void *data, const char *input)
 640 {
 641         struct thread_data *td = data;
 642         long off;
 643         int i = 0, j = 0, len, k, base = 10;
 644         char* loc1, * loc2;
 645
 646         loc1 = strstr(input, "0x");
 647         loc2 = strstr(input, "0X");
 648         if (loc1 || loc2)
 649                 base = 16;
 650         off = strtol(input, NULL, base);
 651         if (off != LONG_MAX || errno != ERANGE) {
 652                 while (off) {
 653                         td->o.verify_pattern[i] = off & 0xff;
 654                         off >>= 8;
 655                         i++;
 656                 }
 657         } else {
 658                 len = strlen(input);
 659                 k = len - 1;
 660                 if (base == 16) {
 661                         if (loc1)
 662                                 j = loc1 - input + 2;
 663                         else
 664                                 j = loc2 - input + 2;
 665                 } else
 666                         return 1;
 667                 if (len - j < MAX_PATTERN_SIZE * 2) {
 668                         while (k >= j) {
 669                                 off = converthexchartoint(input[k--]);
 670                                 if (k >= j)
 671                                         off += (converthexchartoint(input[k--])
 672                                                 * 16);
 673                                 td->o.verify_pattern[i++] = (char) off;
 674                         }
 675                 }
 676         }
 677         td->o.verify_pattern_bytes = i;
 678         return 0;
 679 }
 680
 681 static int str_lockfile_cb(void *data, const char *str)
 682 {
 683         struct thread_data *td = data;
 684         char *nr = get_opt_postfix(str);
 685
 686         td->o.lockfile_batch = 1;
 687         if (nr) {
 688                 td->o.lockfile_batch = atoi(nr);
 689                 free(nr);
 690         }
 691
 692         return 0;
 693 }
 694
 695 static int str_write_bw_log_cb(void *data, const char *str)
 696 {
 697         struct thread_data *td = data;
 698
 699         if (str)
 700                 td->o.bw_log_file = strdup(str);
 701
 702         td->o.write_bw_log = 1;
 703         return 0;
 704 }
 705
 706 static int str_write_lat_log_cb(void *data, const char *str)
 707 {
 708         struct thread_data *td = data;
 709
 710         if (str)
 711                 td->o.lat_log_file = strdup(str);
 712
 713         td->o.write_lat_log = 1;
 714         return 0;
 715 }
 716
 717 static int str_gtod_reduce_cb(void *data, int *il)
 718 {
 719         struct thread_data *td = data;
 720         int val = *il;
 721
 722         td->o.disable_lat = !!val;
 723         td->o.disable_clat = !!val;
 724         td->o.disable_slat = !!val;
 725         td->o.disable_bw = !!val;
 726         if (val)
 727                 td->tv_cache_mask = 63;
 728
 729         return 0;
 730 }
 731
 732 static int str_gtod_cpu_cb(void *data, long long *il)
 733 {
 734         struct thread_data *td = data;
 735         int val = *il;
 736
 737         td->o.gtod_cpu = val;
 738         td->o.gtod_offload = 1;
 739         return 0;
 740 }
 741
 742 static int rw_verify(struct fio_option *o, void *data)
 743 {
 744         struct thread_data *td = data;
 745
 746         if (read_only && td_write(td)) {
 747                 log_err("fio: job <%s> has write bit set, but fio is in"
 748                         " read-only mode\n", td->o.name);
 749                 return 1;
 750         }
 751
 752         return 0;
 753 }
 754
 755 static int gtod_cpu_verify(struct fio_option *o, void *data)
 756 {
 757 #ifndef FIO_HAVE_CPU_AFFINITY
 758         struct thread_data *td = data;
 759
 760         if (td->o.gtod_cpu) {
 761                 log_err("fio: platform must support CPU affinity for"
 762                         "gettimeofday() offloading\n");
 763                 return 1;
 764         }
 765 #endif
 766
 767         return 0;
 768 }
 769
 770 static int kb_base_verify(struct fio_option *o, void *data)
 771 {
 772         struct thread_data *td = data;
 773
 774         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 775                 log_err("fio: kb_base set to nonsensical value: %u\n",
 776                                 td->o.kb_base);
 777                 return 1;
 778         }
 779
 780         return 0;
 781 }
 782
 783 #define __stringify_1(x)        #x
 784 #define __stringify(x)          __stringify_1(x)
 785
 786 /*
 787  * Map of job/command line options
 788  */
 789 static struct fio_option options[FIO_MAX_OPTS] = {
 790         {
 791                 .name   = "description",
 792                 .type   = FIO_OPT_STR_STORE,
 793                 .off1   = td_var_offset(description),
 794                 .help   = "Text job description",
 795         },
 796         {
 797                 .name   = "name",
 798                 .type   = FIO_OPT_STR_STORE,
 799                 .off1   = td_var_offset(name),
 800                 .help   = "Name of this job",
 801         },
 802         {
 803                 .name   = "directory",
 804                 .type   = FIO_OPT_STR_STORE,
 805                 .off1   = td_var_offset(directory),
 806                 .cb     = str_directory_cb,
 807                 .help   = "Directory to store files in",
 808         },
 809         {
 810                 .name   = "filename",
 811                 .type   = FIO_OPT_STR_STORE,
 812                 .off1   = td_var_offset(filename),
 813                 .cb     = str_filename_cb,
 814                 .prio   = -1, /* must come after "directory" */
 815                 .help   = "File(s) to use for the workload",
 816         },
 817         {
 818                 .name   = "kb_base",
 819                 .type   = FIO_OPT_INT,
 820                 .off1   = td_var_offset(kb_base),
 821                 .verify = kb_base_verify,
 822                 .prio   = 1,
 823                 .def    = "1024",
 824                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 825         },
 826         {
 827                 .name   = "lockfile",
 828                 .type   = FIO_OPT_STR,
 829                 .cb     = str_lockfile_cb,
 830                 .off1   = td_var_offset(file_lock_mode),
 831                 .help   = "Lock file when doing IO to it",
 832                 .parent = "filename",
 833                 .def    = "none",
 834                 .posval = {
 835                           { .ival = "none",
 836                             .oval = FILE_LOCK_NONE,
 837                             .help = "No file locking",
 838                           },
 839                           { .ival = "exclusive",
 840                             .oval = FILE_LOCK_EXCLUSIVE,
 841                             .help = "Exclusive file lock",
 842                           },
 843                           {
 844                             .ival = "readwrite",
 845                             .oval = FILE_LOCK_READWRITE,
 846                             .help = "Read vs write lock",
 847                           },
 848                 },
 849         },
 850         {
 851                 .name   = "opendir",
 852                 .type   = FIO_OPT_STR_STORE,
 853                 .off1   = td_var_offset(opendir),
 854                 .cb     = str_opendir_cb,
 855                 .help   = "Recursively add files from this directory and down",
 856         },
 857         {
 858                 .name   = "rw",
 859                 .alias  = "readwrite",
 860                 .type   = FIO_OPT_STR,
 861                 .cb     = str_rw_cb,
 862                 .off1   = td_var_offset(td_ddir),
 863                 .help   = "IO direction",
 864                 .def    = "read",
 865                 .verify = rw_verify,
 866                 .posval = {
 867                           { .ival = "read",
 868                             .oval = TD_DDIR_READ,
 869                             .help = "Sequential read",
 870                           },
 871                           { .ival = "write",
 872                             .oval = TD_DDIR_WRITE,
 873                             .help = "Sequential write",
 874                           },
 875                           { .ival = "randread",
 876                             .oval = TD_DDIR_RANDREAD,
 877                             .help = "Random read",
 878                           },
 879                           { .ival = "randwrite",
 880                             .oval = TD_DDIR_RANDWRITE,
 881                             .help = "Random write",
 882                           },
 883                           { .ival = "rw",
 884                             .oval = TD_DDIR_RW,
 885                             .help = "Sequential read and write mix",
 886                           },
 887                           { .ival = "randrw",
 888                             .oval = TD_DDIR_RANDRW,
 889                             .help = "Random read and write mix"
 890                           },
 891                 },
 892         },
 893         {
 894                 .name   = "rw_sequencer",
 895                 .type   = FIO_OPT_STR,
 896                 .off1   = td_var_offset(rw_seq),
 897                 .help   = "IO offset generator modifier",
 898                 .def    = "sequential",
 899                 .posval = {
 900                           { .ival = "sequential",
 901                             .oval = RW_SEQ_SEQ,
 902                             .help = "Generate sequential offsets",
 903                           },
 904                           { .ival = "identical",
 905                             .oval = RW_SEQ_IDENT,
 906                             .help = "Generate identical offsets",
 907                           },
 908                 },
 909         },
 910
 911         {
 912                 .name   = "ioengine",
 913                 .type   = FIO_OPT_STR_STORE,
 914                 .off1   = td_var_offset(ioengine),
 915                 .help   = "IO engine to use",
 916                 .def    = "sync",
 917                 .posval = {
 918                           { .ival = "sync",
 919                             .help = "Use read/write",
 920                           },
 921                           { .ival = "psync",
 922                             .help = "Use pread/pwrite",
 923                           },
 924                           { .ival = "vsync",
 925                              .help = "Use readv/writev",
 926                           },
 927 #ifdef FIO_HAVE_LIBAIO
 928                           { .ival = "libaio",
 929                             .help = "Linux native asynchronous IO",
 930                           },
 931 #endif
 932 #ifdef FIO_HAVE_POSIXAIO
 933                           { .ival = "posixaio",
 934                             .help = "POSIX asynchronous IO",
 935                           },
 936 #endif
 937 #ifdef FIO_HAVE_SOLARISAIO
 938                           { .ival = "solarisaio",
 939                             .help = "Solaris native asynchronous IO",
 940                           },
 941 #endif
 942                           { .ival = "mmap",
 943                             .help = "Memory mapped IO",
 944                           },
 945 #ifdef FIO_HAVE_SPLICE
 946                           { .ival = "splice",
 947                             .help = "splice/vmsplice based IO",
 948                           },
 949                           { .ival = "netsplice",
 950                             .help = "splice/vmsplice to/from the network",
 951                           },
 952 #endif
 953 #ifdef FIO_HAVE_SGIO
 954                           { .ival = "sg",
 955                             .help = "SCSI generic v3 IO",
 956                           },
 957 #endif
 958                           { .ival = "null",
 959                             .help = "Testing engine (no data transfer)",
 960                           },
 961                           { .ival = "net",
 962                             .help = "Network IO",
 963                           },
 964 #ifdef FIO_HAVE_SYSLET
 965                           { .ival = "syslet-rw",
 966                             .help = "syslet enabled async pread/pwrite IO",
 967                           },
 968 #endif
 969                           { .ival = "cpuio",
 970                             .help = "CPU cycler burner engine",
 971                           },
 972 #ifdef FIO_HAVE_GUASI
 973                           { .ival = "guasi",
 974                             .help = "GUASI IO engine",
 975                           },
 976 #endif
 977                           { .ival = "external",
 978                             .help = "Load external engine (append name)",
 979                           },
 980                 },
 981         },
 982         {
 983                 .name   = "iodepth",
 984                 .type   = FIO_OPT_INT,
 985                 .off1   = td_var_offset(iodepth),
 986                 .help   = "Amount of IO buffers to keep in flight",
 987                 .minval = 1,
 988                 .def    = "1",
 989         },
 990         {
 991                 .name   = "iodepth_batch",
 992                 .alias  = "iodepth_batch_submit",
 993                 .type   = FIO_OPT_INT,
 994                 .off1   = td_var_offset(iodepth_batch),
 995                 .help   = "Number of IO buffers to submit in one go",
 996                 .parent = "iodepth",
 997                 .minval = 1,
 998                 .def    = "1",
 999         },
1000         {
1001                 .name   = "iodepth_batch_complete",
1002                 .type   = FIO_OPT_INT,
1003                 .off1   = td_var_offset(iodepth_batch_complete),
1004                 .help   = "Number of IO buffers to retrieve in one go",
1005                 .parent = "iodepth",
1006                 .minval = 0,
1007                 .def    = "1",
1008         },
1009         {
1010                 .name   = "iodepth_low",
1011                 .type   = FIO_OPT_INT,
1012                 .off1   = td_var_offset(iodepth_low),
1013                 .help   = "Low water mark for queuing depth",
1014                 .parent = "iodepth",
1015         },
1016         {
1017                 .name   = "size",
1018                 .type   = FIO_OPT_STR_VAL,
1019                 .off1   = td_var_offset(size),
1020                 .minval = 1,
1021                 .help   = "Total size of device or files",
1022         },
1023         {
1024                 .name   = "fill_device",
1025                 .type   = FIO_OPT_BOOL,
1026                 .off1   = td_var_offset(fill_device),
1027                 .help   = "Write until an ENOSPC error occurs",
1028                 .def    = "0",
1029         },
1030         {
1031                 .name   = "filesize",
1032                 .type   = FIO_OPT_STR_VAL,
1033                 .off1   = td_var_offset(file_size_low),
1034                 .off2   = td_var_offset(file_size_high),
1035                 .minval = 1,
1036                 .help   = "Size of individual files",
1037         },
1038         {
1039                 .name   = "offset",
1040                 .alias  = "fileoffset",
1041                 .type   = FIO_OPT_STR_VAL,
1042                 .off1   = td_var_offset(start_offset),
1043                 .help   = "Start IO from this offset",
1044                 .def    = "0",
1045         },
1046         {
1047                 .name   = "bs",
1048                 .alias  = "blocksize",
1049                 .type   = FIO_OPT_INT,
1050                 .off1   = td_var_offset(bs[DDIR_READ]),
1051                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1052                 .minval = 1,
1053                 .help   = "Block size unit",
1054                 .def    = "4k",
1055                 .parent = "rw",
1056         },
1057         {
1058                 .name   = "ba",
1059                 .alias  = "blockalign",
1060                 .type   = FIO_OPT_INT,
1061                 .off1   = td_var_offset(ba[DDIR_READ]),
1062                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1063                 .minval = 1,
1064                 .help   = "IO block offset alignment",
1065                 .parent = "rw",
1066         },
1067         {
1068                 .name   = "bsrange",
1069                 .alias  = "blocksize_range",
1070                 .type   = FIO_OPT_RANGE,
1071                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1072                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1073                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1074                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1075                 .minval = 1,
1076                 .help   = "Set block size range (in more detail than bs)",
1077                 .parent = "rw",
1078         },
1079         {
1080                 .name   = "bssplit",
1081                 .type   = FIO_OPT_STR,
1082                 .cb     = str_bssplit_cb,
1083                 .help   = "Set a specific mix of block sizes",
1084                 .parent = "rw",
1085         },
1086         {
1087                 .name   = "bs_unaligned",
1088                 .alias  = "blocksize_unaligned",
1089                 .type   = FIO_OPT_STR_SET,
1090                 .off1   = td_var_offset(bs_unaligned),
1091                 .help   = "Don't sector align IO buffer sizes",
1092                 .parent = "rw",
1093         },
1094         {
1095                 .name   = "randrepeat",
1096                 .type   = FIO_OPT_BOOL,
1097                 .off1   = td_var_offset(rand_repeatable),
1098                 .help   = "Use repeatable random IO pattern",
1099                 .def    = "1",
1100                 .parent = "rw",
1101         },
1102         {
1103                 .name   = "norandommap",
1104                 .type   = FIO_OPT_STR_SET,
1105                 .off1   = td_var_offset(norandommap),
1106                 .help   = "Accept potential duplicate random blocks",
1107                 .parent = "rw",
1108         },
1109         {
1110                 .name   = "softrandommap",
1111                 .type   = FIO_OPT_BOOL,
1112                 .off1   = td_var_offset(softrandommap),
1113                 .help   = "Set norandommap if randommap allocation fails",
1114                 .parent = "norandommap",
1115                 .def    = "0",
1116         },
1117         {
1118                 .name   = "nrfiles",
1119                 .type   = FIO_OPT_INT,
1120                 .off1   = td_var_offset(nr_files),
1121                 .help   = "Split job workload between this number of files",
1122                 .def    = "1",
1123         },
1124         {
1125                 .name   = "openfiles",
1126                 .type   = FIO_OPT_INT,
1127                 .off1   = td_var_offset(open_files),
1128                 .help   = "Number of files to keep open at the same time",
1129         },
1130         {
1131                 .name   = "file_service_type",
1132                 .type   = FIO_OPT_STR,
1133                 .cb     = str_fst_cb,
1134                 .off1   = td_var_offset(file_service_type),
1135                 .help   = "How to select which file to service next",
1136                 .def    = "roundrobin",
1137                 .posval = {
1138                           { .ival = "random",
1139                             .oval = FIO_FSERVICE_RANDOM,
1140                             .help = "Choose a file at random",
1141                           },
1142                           { .ival = "roundrobin",
1143                             .oval = FIO_FSERVICE_RR,
1144                             .help = "Round robin select files",
1145                           },
1146                           { .ival = "sequential",
1147                             .oval = FIO_FSERVICE_SEQ,
1148                             .help = "Finish one file before moving to the next",
1149                           },
1150                 },
1151                 .parent = "nrfiles",
1152         },
1153 #ifdef FIO_HAVE_FALLOCATE
1154         {
1155                 .name   = "fallocate",
1156                 .type   = FIO_OPT_BOOL,
1157                 .off1   = td_var_offset(fallocate),
1158                 .help   = "Use fallocate() when laying out files",
1159                 .def    = "1",
1160         },
1161 #endif
1162         {
1163                 .name   = "fadvise_hint",
1164                 .type   = FIO_OPT_BOOL,
1165                 .off1   = td_var_offset(fadvise_hint),
1166                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1167                 .def    = "1",
1168         },
1169         {
1170                 .name   = "fsync",
1171                 .type   = FIO_OPT_INT,
1172                 .off1   = td_var_offset(fsync_blocks),
1173                 .help   = "Issue fsync for writes every given number of blocks",
1174                 .def    = "0",
1175         },
1176         {
1177                 .name   = "fdatasync",
1178                 .type   = FIO_OPT_INT,
1179                 .off1   = td_var_offset(fdatasync_blocks),
1180                 .help   = "Issue fdatasync for writes every given number of blocks",
1181                 .def    = "0",
1182         },
1183 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1184         {
1185                 .name   = "sync_file_range",
1186                 .posval = {
1187                           { .ival = "wait_before",
1188                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1189                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1190                             .or   = 1,
1191                           },
1192                           { .ival = "write",
1193                             .oval = SYNC_FILE_RANGE_WRITE,
1194                             .help = "SYNC_FILE_RANGE_WRITE",
1195                             .or   = 1,
1196                           },
1197                           {
1198                             .ival = "wait_after",
1199                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1200                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1201                             .or   = 1,
1202                           },
1203                 },
1204                 .type   = FIO_OPT_STR_MULTI,
1205                 .cb     = str_sfr_cb,
1206                 .off1   = td_var_offset(sync_file_range),
1207                 .help   = "Use sync_file_range()",
1208         },
1209 #endif
1210         {
1211                 .name   = "direct",
1212                 .type   = FIO_OPT_BOOL,
1213                 .off1   = td_var_offset(odirect),
1214                 .help   = "Use O_DIRECT IO (negates buffered)",
1215                 .def    = "0",
1216         },
1217         {
1218                 .name   = "buffered",
1219                 .type   = FIO_OPT_BOOL,
1220                 .off1   = td_var_offset(odirect),
1221                 .neg    = 1,
1222                 .help   = "Use buffered IO (negates direct)",
1223                 .def    = "1",
1224         },
1225         {
1226                 .name   = "overwrite",
1227                 .type   = FIO_OPT_BOOL,
1228                 .off1   = td_var_offset(overwrite),
1229                 .help   = "When writing, set whether to overwrite current data",
1230                 .def    = "0",
1231         },
1232         {
1233                 .name   = "loops",
1234                 .type   = FIO_OPT_INT,
1235                 .off1   = td_var_offset(loops),
1236                 .help   = "Number of times to run the job",
1237                 .def    = "1",
1238         },
1239         {
1240                 .name   = "numjobs",
1241                 .type   = FIO_OPT_INT,
1242                 .off1   = td_var_offset(numjobs),
1243                 .help   = "Duplicate this job this many times",
1244                 .def    = "1",
1245         },
1246         {
1247                 .name   = "startdelay",
1248                 .type   = FIO_OPT_STR_VAL_TIME,
1249                 .off1   = td_var_offset(start_delay),
1250                 .help   = "Only start job when this period has passed",
1251                 .def    = "0",
1252         },
1253         {
1254                 .name   = "runtime",
1255                 .alias  = "timeout",
1256                 .type   = FIO_OPT_STR_VAL_TIME,
1257                 .off1   = td_var_offset(timeout),
1258                 .help   = "Stop workload when this amount of time has passed",
1259                 .def    = "0",
1260         },
1261         {
1262                 .name   = "time_based",
1263                 .type   = FIO_OPT_STR_SET,
1264                 .off1   = td_var_offset(time_based),
1265                 .help   = "Keep running until runtime/timeout is met",
1266         },
1267         {
1268                 .name   = "ramp_time",
1269                 .type   = FIO_OPT_STR_VAL_TIME,
1270                 .off1   = td_var_offset(ramp_time),
1271                 .help   = "Ramp up time before measuring performance",
1272         },
1273         {
1274                 .name   = "clocksource",
1275                 .type   = FIO_OPT_STR,
1276                 .cb     = fio_clock_source_cb,
1277                 .off1   = td_var_offset(clocksource),
1278                 .help   = "What type of timing source to use",
1279                 .posval = {
1280                           { .ival = "gettimeofday",
1281                             .oval = CS_GTOD,
1282                             .help = "Use gettimeofday(2) for timing",
1283                           },
1284                           { .ival = "clock_gettime",
1285                             .oval = CS_CGETTIME,
1286                             .help = "Use clock_gettime(2) for timing",
1287                           },
1288 #ifdef ARCH_HAVE_CPU_CLOCK
1289                           { .ival = "cpu",
1290                             .oval = CS_CPUCLOCK,
1291                             .help = "Use CPU private clock",
1292                           },
1293 #endif
1294                 },
1295         },
1296         {
1297                 .name   = "mem",
1298                 .alias  = "iomem",
1299                 .type   = FIO_OPT_STR,
1300                 .cb     = str_mem_cb,
1301                 .off1   = td_var_offset(mem_type),
1302                 .help   = "Backing type for IO buffers",
1303                 .def    = "malloc",
1304                 .posval = {
1305                           { .ival = "malloc",
1306                             .oval = MEM_MALLOC,
1307                             .help = "Use malloc(3) for IO buffers",
1308                           },
1309                           { .ival = "shm",
1310                             .oval = MEM_SHM,
1311                             .help = "Use shared memory segments for IO buffers",
1312                           },
1313 #ifdef FIO_HAVE_HUGETLB
1314                           { .ival = "shmhuge",
1315                             .oval = MEM_SHMHUGE,
1316                             .help = "Like shm, but use huge pages",
1317                           },
1318 #endif
1319                           { .ival = "mmap",
1320                             .oval = MEM_MMAP,
1321                             .help = "Use mmap(2) (file or anon) for IO buffers",
1322                           },
1323 #ifdef FIO_HAVE_HUGETLB
1324                           { .ival = "mmaphuge",
1325                             .oval = MEM_MMAPHUGE,
1326                             .help = "Like mmap, but use huge pages",
1327                           },
1328 #endif
1329                   },
1330         },
1331         {
1332                 .name   = "iomem_align",
1333                 .alias  = "mem_align",
1334                 .type   = FIO_OPT_INT,
1335                 .off1   = td_var_offset(mem_align),
1336                 .minval = 0,
1337                 .help   = "IO memory buffer offset alignment",
1338                 .def    = "0",
1339                 .parent = "iomem",
1340         },
1341         {
1342                 .name   = "verify",
1343                 .type   = FIO_OPT_STR,
1344                 .off1   = td_var_offset(verify),
1345                 .help   = "Verify data written",
1346                 .cb     = str_verify_cb,
1347                 .def    = "0",
1348                 .posval = {
1349                           { .ival = "0",
1350                             .oval = VERIFY_NONE,
1351                             .help = "Don't do IO verification",
1352                           },
1353                           { .ival = "md5",
1354                             .oval = VERIFY_MD5,
1355                             .help = "Use md5 checksums for verification",
1356                           },
1357                           { .ival = "crc64",
1358                             .oval = VERIFY_CRC64,
1359                             .help = "Use crc64 checksums for verification",
1360                           },
1361                           { .ival = "crc32",
1362                             .oval = VERIFY_CRC32,
1363                             .help = "Use crc32 checksums for verification",
1364                           },
1365                           { .ival = "crc32c-intel",
1366                             .oval = VERIFY_CRC32C_INTEL,
1367                             .help = "Use hw crc32c checksums for verification",
1368                           },
1369                           { .ival = "crc32c",
1370                             .oval = VERIFY_CRC32C,
1371                             .help = "Use crc32c checksums for verification",
1372                           },
1373                           { .ival = "crc16",
1374                             .oval = VERIFY_CRC16,
1375                             .help = "Use crc16 checksums for verification",
1376                           },
1377                           { .ival = "crc7",
1378                             .oval = VERIFY_CRC7,
1379                             .help = "Use crc7 checksums for verification",
1380                           },
1381                           { .ival = "sha1",
1382                             .oval = VERIFY_SHA1,
1383                             .help = "Use sha1 checksums for verification",
1384                           },
1385                           { .ival = "sha256",
1386                             .oval = VERIFY_SHA256,
1387                             .help = "Use sha256 checksums for verification",
1388                           },
1389                           { .ival = "sha512",
1390                             .oval = VERIFY_SHA512,
1391                             .help = "Use sha512 checksums for verification",
1392                           },
1393                           { .ival = "meta",
1394                             .oval = VERIFY_META,
1395                             .help = "Use io information",
1396                           },
1397                           {
1398                             .ival = "null",
1399                             .oval = VERIFY_NULL,
1400                             .help = "Pretend to verify",
1401                           },
1402                 },
1403         },
1404         {
1405                 .name   = "do_verify",
1406                 .type   = FIO_OPT_BOOL,
1407                 .off1   = td_var_offset(do_verify),
1408                 .help   = "Run verification stage after write",
1409                 .def    = "1",
1410                 .parent = "verify",
1411         },
1412         {
1413                 .name   = "verifysort",
1414                 .type   = FIO_OPT_BOOL,
1415                 .off1   = td_var_offset(verifysort),
1416                 .help   = "Sort written verify blocks for read back",
1417                 .def    = "1",
1418                 .parent = "verify",
1419         },
1420         {
1421                 .name   = "verify_interval",
1422                 .type   = FIO_OPT_INT,
1423                 .off1   = td_var_offset(verify_interval),
1424                 .minval = 2 * sizeof(struct verify_header),
1425                 .help   = "Store verify buffer header every N bytes",
1426                 .parent = "verify",
1427         },
1428         {
1429                 .name   = "verify_offset",
1430                 .type   = FIO_OPT_INT,
1431                 .help   = "Offset verify header location by N bytes",
1432                 .def    = "0",
1433                 .cb     = str_verify_offset_cb,
1434                 .parent = "verify",
1435         },
1436         {
1437                 .name   = "verify_pattern",
1438                 .type   = FIO_OPT_STR,
1439                 .cb     = str_verify_pattern_cb,
1440                 .help   = "Fill pattern for IO buffers",
1441                 .parent = "verify",
1442         },
1443         {
1444                 .name   = "verify_fatal",
1445                 .type   = FIO_OPT_BOOL,
1446                 .off1   = td_var_offset(verify_fatal),
1447                 .def    = "0",
1448                 .help   = "Exit on a single verify failure, don't continue",
1449                 .parent = "verify",
1450         },
1451         {
1452                 .name   = "verify_async",
1453                 .type   = FIO_OPT_INT,
1454                 .off1   = td_var_offset(verify_async),
1455                 .def    = "0",
1456                 .help   = "Number of async verifier threads to use",
1457                 .parent = "verify",
1458         },
1459         {
1460                 .name   = "verify_backlog",
1461                 .type   = FIO_OPT_STR_VAL,
1462                 .off1   = td_var_offset(verify_backlog),
1463                 .help   = "Verify after this number of blocks are written",
1464                 .parent = "verify",
1465         },
1466         {
1467                 .name   = "verify_backlog_batch",
1468                 .type   = FIO_OPT_INT,
1469                 .off1   = td_var_offset(verify_batch),
1470                 .help   = "Verify this number of IO blocks",
1471                 .parent = "verify",
1472         },
1473 #ifdef FIO_HAVE_CPU_AFFINITY
1474         {
1475                 .name   = "verify_async_cpus",
1476                 .type   = FIO_OPT_STR,
1477                 .cb     = str_verify_cpus_allowed_cb,
1478                 .help   = "Set CPUs allowed for async verify threads",
1479                 .parent = "verify_async",
1480         },
1481 #endif
1482 #ifdef FIO_HAVE_TRIM
1483         {
1484                 .name   = "trim_percentage",
1485                 .type   = FIO_OPT_INT,
1486                 .cb     = str_verify_trim_cb,
1487                 .maxval = 100,
1488                 .help   = "Number of verify blocks to discard/trim",
1489                 .parent = "verify",
1490                 .def    = "0",
1491         },
1492         {
1493                 .name   = "trim_verify_zero",
1494                 .type   = FIO_OPT_INT,
1495                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1496                 .off1   = td_var_offset(trim_zero),
1497                 .parent = "trim_percentage",
1498                 .def    = "1",
1499         },
1500         {
1501                 .name   = "trim_backlog",
1502                 .type   = FIO_OPT_STR_VAL,
1503                 .off1   = td_var_offset(trim_backlog),
1504                 .help   = "Trim after this number of blocks are written",
1505                 .parent = "trim_percentage",
1506         },
1507         {
1508                 .name   = "trim_backlog_batch",
1509                 .type   = FIO_OPT_INT,
1510                 .off1   = td_var_offset(trim_batch),
1511                 .help   = "Trim this number of IO blocks",
1512                 .parent = "trim_percentage",
1513         },
1514 #endif
1515         {
1516                 .name   = "write_iolog",
1517                 .type   = FIO_OPT_STR_STORE,
1518                 .off1   = td_var_offset(write_iolog_file),
1519                 .help   = "Store IO pattern to file",
1520         },
1521         {
1522                 .name   = "read_iolog",
1523                 .type   = FIO_OPT_STR_STORE,
1524                 .off1   = td_var_offset(read_iolog_file),
1525                 .help   = "Playback IO pattern from file",
1526         },
1527         {
1528                 .name   = "replay_no_stall",
1529                 .type   = FIO_OPT_INT,
1530                 .off1   = td_var_offset(no_stall),
1531                 .def    = "0",
1532                 .parent = "read_iolog",
1533                 .help   = "Playback IO pattern file as fast as possible without stalls",
1534         },
1535         {
1536                 .name   = "replay_redirect",
1537                 .type   = FIO_OPT_STR_STORE,
1538                 .off1   = td_var_offset(replay_redirect),
1539                 .parent = "read_iolog",
1540                 .help   = "Replay all I/O onto this device, regardless of trace device",
1541         },
1542         {
1543                 .name   = "exec_prerun",
1544                 .type   = FIO_OPT_STR_STORE,
1545                 .off1   = td_var_offset(exec_prerun),
1546                 .help   = "Execute this file prior to running job",
1547         },
1548         {
1549                 .name   = "exec_postrun",
1550                 .type   = FIO_OPT_STR_STORE,
1551                 .off1   = td_var_offset(exec_postrun),
1552                 .help   = "Execute this file after running job",
1553         },
1554 #ifdef FIO_HAVE_IOSCHED_SWITCH
1555         {
1556                 .name   = "ioscheduler",
1557                 .type   = FIO_OPT_STR_STORE,
1558                 .off1   = td_var_offset(ioscheduler),
1559                 .help   = "Use this IO scheduler on the backing device",
1560         },
1561 #endif
1562         {
1563                 .name   = "zonesize",
1564                 .type   = FIO_OPT_STR_VAL,
1565                 .off1   = td_var_offset(zone_size),
1566                 .help   = "Give size of an IO zone",
1567                 .def    = "0",
1568         },
1569         {
1570                 .name   = "zoneskip",
1571                 .type   = FIO_OPT_STR_VAL,
1572                 .off1   = td_var_offset(zone_skip),
1573                 .help   = "Space between IO zones",
1574                 .def    = "0",
1575         },
1576         {
1577                 .name   = "lockmem",
1578                 .type   = FIO_OPT_STR_VAL,
1579                 .cb     = str_lockmem_cb,
1580                 .help   = "Lock down this amount of memory",
1581                 .def    = "0",
1582         },
1583         {
1584                 .name   = "rwmixread",
1585                 .type   = FIO_OPT_INT,
1586                 .cb     = str_rwmix_read_cb,
1587                 .maxval = 100,
1588                 .help   = "Percentage of mixed workload that is reads",
1589                 .def    = "50",
1590         },
1591         {
1592                 .name   = "rwmixwrite",
1593                 .type   = FIO_OPT_INT,
1594                 .cb     = str_rwmix_write_cb,
1595                 .maxval = 100,
1596                 .help   = "Percentage of mixed workload that is writes",
1597                 .def    = "50",
1598         },
1599         {
1600                 .name   = "rwmixcycle",
1601                 .type   = FIO_OPT_DEPRECATED,
1602         },
1603         {
1604                 .name   = "nice",
1605                 .type   = FIO_OPT_INT,
1606                 .off1   = td_var_offset(nice),
1607                 .help   = "Set job CPU nice value",
1608                 .minval = -19,
1609                 .maxval = 20,
1610                 .def    = "0",
1611         },
1612 #ifdef FIO_HAVE_IOPRIO
1613         {
1614                 .name   = "prio",
1615                 .type   = FIO_OPT_INT,
1616                 .cb     = str_prio_cb,
1617                 .help   = "Set job IO priority value",
1618                 .minval = 0,
1619                 .maxval = 7,
1620         },
1621         {
1622                 .name   = "prioclass",
1623                 .type   = FIO_OPT_INT,
1624                 .cb     = str_prioclass_cb,
1625                 .help   = "Set job IO priority class",
1626                 .minval = 0,
1627                 .maxval = 3,
1628         },
1629 #endif
1630         {
1631                 .name   = "thinktime",
1632                 .type   = FIO_OPT_INT,
1633                 .off1   = td_var_offset(thinktime),
1634                 .help   = "Idle time between IO buffers (usec)",
1635                 .def    = "0",
1636         },
1637         {
1638                 .name   = "thinktime_spin",
1639                 .type   = FIO_OPT_INT,
1640                 .off1   = td_var_offset(thinktime_spin),
1641                 .help   = "Start think time by spinning this amount (usec)",
1642                 .def    = "0",
1643                 .parent = "thinktime",
1644         },
1645         {
1646                 .name   = "thinktime_blocks",
1647                 .type   = FIO_OPT_INT,
1648                 .off1   = td_var_offset(thinktime_blocks),
1649                 .help   = "IO buffer period between 'thinktime'",
1650                 .def    = "1",
1651                 .parent = "thinktime",
1652         },
1653         {
1654                 .name   = "rate",
1655                 .type   = FIO_OPT_INT,
1656                 .off1   = td_var_offset(rate[0]),
1657                 .off2   = td_var_offset(rate[1]),
1658                 .help   = "Set bandwidth rate",
1659         },
1660         {
1661                 .name   = "ratemin",
1662                 .type   = FIO_OPT_INT,
1663                 .off1   = td_var_offset(ratemin[0]),
1664                 .off2   = td_var_offset(ratemin[1]),
1665                 .help   = "Job must meet this rate or it will be shutdown",
1666                 .parent = "rate",
1667         },
1668         {
1669                 .name   = "rate_iops",
1670                 .type   = FIO_OPT_INT,
1671                 .off1   = td_var_offset(rate_iops[0]),
1672                 .off2   = td_var_offset(rate_iops[1]),
1673                 .help   = "Limit IO used to this number of IO operations/sec",
1674         },
1675         {
1676                 .name   = "rate_iops_min",
1677                 .type   = FIO_OPT_INT,
1678                 .off1   = td_var_offset(rate_iops_min[0]),
1679                 .off2   = td_var_offset(rate_iops_min[1]),
1680                 .help   = "Job must meet this rate or it will be shutdown",
1681                 .parent = "rate_iops",
1682         },
1683         {
1684                 .name   = "ratecycle",
1685                 .type   = FIO_OPT_INT,
1686                 .off1   = td_var_offset(ratecycle),
1687                 .help   = "Window average for rate limits (msec)",
1688                 .def    = "1000",
1689                 .parent = "rate",
1690         },
1691         {
1692                 .name   = "invalidate",
1693                 .type   = FIO_OPT_BOOL,
1694                 .off1   = td_var_offset(invalidate_cache),
1695                 .help   = "Invalidate buffer/page cache prior to running job",
1696                 .def    = "1",
1697         },
1698         {
1699                 .name   = "sync",
1700                 .type   = FIO_OPT_BOOL,
1701                 .off1   = td_var_offset(sync_io),
1702                 .help   = "Use O_SYNC for buffered writes",
1703                 .def    = "0",
1704                 .parent = "buffered",
1705         },
1706         {
1707                 .name   = "bwavgtime",
1708                 .type   = FIO_OPT_INT,
1709                 .off1   = td_var_offset(bw_avg_time),
1710                 .help   = "Time window over which to calculate bandwidth"
1711                           " (msec)",
1712                 .def    = "500",
1713         },
1714         {
1715                 .name   = "create_serialize",
1716                 .type   = FIO_OPT_BOOL,
1717                 .off1   = td_var_offset(create_serialize),
1718                 .help   = "Serialize creating of job files",
1719                 .def    = "1",
1720         },
1721         {
1722                 .name   = "create_fsync",
1723                 .type   = FIO_OPT_BOOL,
1724                 .off1   = td_var_offset(create_fsync),
1725                 .help   = "Fsync file after creation",
1726                 .def    = "1",
1727         },
1728         {
1729                 .name   = "create_on_open",
1730                 .type   = FIO_OPT_BOOL,
1731                 .off1   = td_var_offset(create_on_open),
1732                 .help   = "Create files when they are opened for IO",
1733                 .def    = "0",
1734         },
1735         {
1736                 .name   = "pre_read",
1737                 .type   = FIO_OPT_BOOL,
1738                 .off1   = td_var_offset(pre_read),
1739                 .help   = "Preread files before starting official testing",
1740                 .def    = "0",
1741         },
1742         {
1743                 .name   = "cpuload",
1744                 .type   = FIO_OPT_INT,
1745                 .off1   = td_var_offset(cpuload),
1746                 .help   = "Use this percentage of CPU",
1747         },
1748         {
1749                 .name   = "cpuchunks",
1750                 .type   = FIO_OPT_INT,
1751                 .off1   = td_var_offset(cpucycle),
1752                 .help   = "Length of the CPU burn cycles (usecs)",
1753                 .def    = "50000",
1754                 .parent = "cpuload",
1755         },
1756 #ifdef FIO_HAVE_CPU_AFFINITY
1757         {
1758                 .name   = "cpumask",
1759                 .type   = FIO_OPT_INT,
1760                 .cb     = str_cpumask_cb,
1761                 .help   = "CPU affinity mask",
1762         },
1763         {
1764                 .name   = "cpus_allowed",
1765                 .type   = FIO_OPT_STR,
1766                 .cb     = str_cpus_allowed_cb,
1767                 .help   = "Set CPUs allowed",
1768         },
1769 #endif
1770         {
1771                 .name   = "end_fsync",
1772                 .type   = FIO_OPT_BOOL,
1773                 .off1   = td_var_offset(end_fsync),
1774                 .help   = "Include fsync at the end of job",
1775                 .def    = "0",
1776         },
1777         {
1778                 .name   = "fsync_on_close",
1779                 .type   = FIO_OPT_BOOL,
1780                 .off1   = td_var_offset(fsync_on_close),
1781                 .help   = "fsync files on close",
1782                 .def    = "0",
1783         },
1784         {
1785                 .name   = "unlink",
1786                 .type   = FIO_OPT_BOOL,
1787                 .off1   = td_var_offset(unlink),
1788                 .help   = "Unlink created files after job has completed",
1789                 .def    = "0",
1790         },
1791         {
1792                 .name   = "exitall",
1793                 .type   = FIO_OPT_STR_SET,
1794                 .cb     = str_exitall_cb,
1795                 .help   = "Terminate all jobs when one exits",
1796         },
1797         {
1798                 .name   = "stonewall",
1799                 .type   = FIO_OPT_STR_SET,
1800                 .off1   = td_var_offset(stonewall),
1801                 .help   = "Insert a hard barrier between this job and previous",
1802         },
1803         {
1804                 .name   = "new_group",
1805                 .type   = FIO_OPT_STR_SET,
1806                 .off1   = td_var_offset(new_group),
1807                 .help   = "Mark the start of a new group (for reporting)",
1808         },
1809         {
1810                 .name   = "thread",
1811                 .type   = FIO_OPT_STR_SET,
1812                 .off1   = td_var_offset(use_thread),
1813                 .help   = "Use threads instead of forks",
1814         },
1815         {
1816                 .name   = "write_bw_log",
1817                 .type   = FIO_OPT_STR,
1818                 .off1   = td_var_offset(write_bw_log),
1819                 .cb     = str_write_bw_log_cb,
1820                 .help   = "Write log of bandwidth during run",
1821         },
1822         {
1823                 .name   = "write_lat_log",
1824                 .type   = FIO_OPT_STR,
1825                 .off1   = td_var_offset(write_lat_log),
1826                 .cb     = str_write_lat_log_cb,
1827                 .help   = "Write log of latency during run",
1828         },
1829         {
1830                 .name   = "hugepage-size",
1831                 .type   = FIO_OPT_INT,
1832                 .off1   = td_var_offset(hugepage_size),
1833                 .help   = "When using hugepages, specify size of each page",
1834                 .def    = __stringify(FIO_HUGE_PAGE),
1835         },
1836         {
1837                 .name   = "group_reporting",
1838                 .type   = FIO_OPT_STR_SET,
1839                 .off1   = td_var_offset(group_reporting),
1840                 .help   = "Do reporting on a per-group basis",
1841         },
1842         {
1843                 .name   = "zero_buffers",
1844                 .type   = FIO_OPT_STR_SET,
1845                 .off1   = td_var_offset(zero_buffers),
1846                 .help   = "Init IO buffers to all zeroes",
1847         },
1848         {
1849                 .name   = "refill_buffers",
1850                 .type   = FIO_OPT_STR_SET,
1851                 .off1   = td_var_offset(refill_buffers),
1852                 .help   = "Refill IO buffers on every IO submit",
1853         },
1854 #ifdef FIO_HAVE_DISK_UTIL
1855         {
1856                 .name   = "disk_util",
1857                 .type   = FIO_OPT_BOOL,
1858                 .off1   = td_var_offset(do_disk_util),
1859                 .help   = "Log disk utilization statistics",
1860                 .def    = "1",
1861         },
1862 #endif
1863         {
1864                 .name   = "gtod_reduce",
1865                 .type   = FIO_OPT_BOOL,
1866                 .help   = "Greatly reduce number of gettimeofday() calls",
1867                 .cb     = str_gtod_reduce_cb,
1868                 .def    = "0",
1869         },
1870         {
1871                 .name   = "disable_lat",
1872                 .type   = FIO_OPT_BOOL,
1873                 .off1   = td_var_offset(disable_lat),
1874                 .help   = "Disable latency numbers",
1875                 .parent = "gtod_reduce",
1876                 .def    = "0",
1877         },
1878         {
1879                 .name   = "disable_clat",
1880                 .type   = FIO_OPT_BOOL,
1881                 .off1   = td_var_offset(disable_clat),
1882                 .help   = "Disable completion latency numbers",
1883                 .parent = "gtod_reduce",
1884                 .def    = "0",
1885         },
1886         {
1887                 .name   = "disable_slat",
1888                 .type   = FIO_OPT_BOOL,
1889                 .off1   = td_var_offset(disable_slat),
1890                 .help   = "Disable submissionn latency numbers",
1891                 .parent = "gtod_reduce",
1892                 .def    = "0",
1893         },
1894         {
1895                 .name   = "disable_bw_measurement",
1896                 .type   = FIO_OPT_BOOL,
1897                 .off1   = td_var_offset(disable_bw),
1898                 .help   = "Disable bandwidth logging",
1899                 .parent = "gtod_reduce",
1900                 .def    = "0",
1901         },
1902         {
1903                 .name   = "gtod_cpu",
1904                 .type   = FIO_OPT_INT,
1905                 .cb     = str_gtod_cpu_cb,
1906                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1907                 .verify = gtod_cpu_verify,
1908         },
1909         {
1910                 .name   = "continue_on_error",
1911                 .type   = FIO_OPT_BOOL,
1912                 .off1   = td_var_offset(continue_on_error),
1913                 .help   = "Continue on non-fatal errors during I/O",
1914                 .def    = "0",
1915         },
1916         {
1917                 .name   = "profile",
1918                 .type   = FIO_OPT_STR_STORE,
1919                 .off1   = td_var_offset(profile),
1920                 .help   = "Select a specific builtin performance test",
1921         },
1922         {
1923                 .name   = "cgroup",
1924                 .type   = FIO_OPT_STR_STORE,
1925                 .off1   = td_var_offset(cgroup),
1926                 .help   = "Add job to cgroup of this name",
1927         },
1928         {
1929                 .name   = "cgroup_weight",
1930                 .type   = FIO_OPT_INT,
1931                 .off1   = td_var_offset(cgroup_weight),
1932                 .help   = "Use given weight for cgroup",
1933                 .minval = 100,
1934                 .maxval = 1000,
1935         },
1936         {
1937                 .name   = "cgroup_nodelete",
1938                 .type   = FIO_OPT_BOOL,
1939                 .off1   = td_var_offset(cgroup_nodelete),
1940                 .help   = "Do not delete cgroups after job completion",
1941                 .def    = "0",
1942         },
1943         {
1944                 .name   = "uid",
1945                 .type   = FIO_OPT_INT,
1946                 .off1   = td_var_offset(uid),
1947                 .help   = "Run job with this user ID",
1948         },
1949         {
1950                 .name   = "gid",
1951                 .type   = FIO_OPT_INT,
1952                 .off1   = td_var_offset(gid),
1953                 .help   = "Run job with this group ID",
1954         },
1955         {
1956                 .name = NULL,
1957         },
1958 };
1959
1960 static void add_to_lopt(struct option *lopt, struct fio_option *o,
1961                         const char *name)
1962 {
1963         lopt->name = (char *) name;
1964         lopt->val = FIO_GETOPT_JOB;
1965         if (o->type == FIO_OPT_STR_SET)
1966                 lopt->has_arg = no_argument;
1967         else
1968                 lopt->has_arg = required_argument;
1969 }
1970
1971 void fio_options_dup_and_init(struct option *long_options)
1972 {
1973         struct fio_option *o;
1974         unsigned int i;
1975
1976         options_init(options);
1977
1978         i = 0;
1979         while (long_options[i].name)
1980                 i++;
1981
1982         o = &options[0];
1983         while (o->name) {
1984                 add_to_lopt(&long_options[i], o, o->name);
1985                 if (o->alias) {
1986                         i++;
1987                         add_to_lopt(&long_options[i], o, o->alias);
1988                 }
1989
1990                 i++;
1991                 o++;
1992                 assert(i < FIO_NR_OPTIONS);
1993         }
1994 }
1995
1996 struct fio_keyword {
1997         const char *word;
1998         const char *desc;
1999         char *replace;
2000 };
2001
2002 static struct fio_keyword fio_keywords[] = {
2003         {
2004                 .word   = "$pagesize",
2005                 .desc   = "Page size in the system",
2006         },
2007         {
2008                 .word   = "$mb_memory",
2009                 .desc   = "Megabytes of memory online",
2010         },
2011         {
2012                 .word   = "$ncpus",
2013                 .desc   = "Number of CPUs online in the system",
2014         },
2015         {
2016                 .word   = NULL,
2017         },
2018 };
2019
2020 void fio_keywords_init(void)
2021 {
2022         unsigned long long mb_memory;
2023         char buf[128];
2024         long l;
2025
2026         sprintf(buf, "%lu", page_size);
2027         fio_keywords[0].replace = strdup(buf);
2028
2029         mb_memory = os_phys_mem() / page_size;
2030         sprintf(buf, "%llu", mb_memory);
2031         fio_keywords[1].replace = strdup(buf);
2032
2033         l = sysconf(_SC_NPROCESSORS_ONLN);
2034         sprintf(buf, "%lu", l);
2035         fio_keywords[2].replace = strdup(buf);
2036 }
2037
2038 #define BC_APP          "bc"
2039
2040 static char *bc_calc(char *str)
2041 {
2042         char *buf, *tmp, opt[80];
2043         FILE *f;
2044         int ret;
2045
2046         /*
2047          * No math, just return string
2048          */
2049         if (!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2050             !strchr(str, '/'))
2051                 return str;
2052
2053         /*
2054          * Split option from value, we only need to calculate the value
2055          */
2056         tmp = strchr(str, '=');
2057         if (!tmp)
2058                 return str;
2059
2060         tmp++;
2061         memset(opt, 0, sizeof(opt));
2062         strncpy(opt, str, tmp - str);
2063
2064         buf = malloc(128);
2065
2066         sprintf(buf, "which %s > /dev/null", BC_APP);
2067         if (system(buf)) {
2068                 log_err("fio: bc is needed for performing math\n");
2069                 free(buf);
2070                 return NULL;
2071         }
2072
2073         sprintf(buf, "echo %s | %s", tmp, BC_APP);
2074         f = popen(buf, "r");
2075         if (!f) {
2076                 free(buf);
2077                 return NULL;
2078         }
2079
2080         ret = fread(buf, 1, 128, f);
2081         if (ret <= 0) {
2082                 free(buf);
2083                 return NULL;
2084         }
2085
2086         buf[ret - 1] = '\0';
2087         strcat(opt, buf);
2088         strcpy(buf, opt);
2089         pclose(f);
2090         free(str);
2091         return buf;
2092 }
2093
2094 /*
2095  * Look for reserved variable names and replace them with real values
2096  */
2097 static char *fio_keyword_replace(char *opt)
2098 {
2099         char *s;
2100         int i;
2101
2102         for (i = 0; fio_keywords[i].word != NULL; i++) {
2103                 struct fio_keyword *kw = &fio_keywords[i];
2104
2105                 while ((s = strstr(opt, kw->word)) != NULL) {
2106                         char *new = malloc(strlen(opt) + 1);
2107                         char *o_org = opt;
2108                         int olen = s - opt;
2109                         int len;
2110
2111                         /*
2112                          * Copy part of the string before the keyword and
2113                          * sprintf() the replacement after it.
2114                          */
2115                         memcpy(new, opt, olen);
2116                         len = sprintf(new + olen, "%s", kw->replace);
2117
2118                         /*
2119                          * If there's more in the original string, copy that
2120                          * in too
2121                          */
2122                         opt += strlen(kw->word) + olen;
2123                         if (strlen(opt))
2124                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2125
2126                         /*
2127                          * replace opt and free the old opt
2128                          */
2129                         opt = new;
2130                         //free(o_org);
2131
2132                         /*
2133                          * Check for potential math and invoke bc, if possible
2134                          */
2135                         opt = bc_calc(opt);
2136                 }
2137         }
2138
2139         return opt;
2140 }
2141
2142 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2143 {
2144         int i, ret;
2145
2146         sort_options(opts, options, num_opts);
2147
2148         for (ret = 0, i = 0; i < num_opts; i++) {
2149                 opts[i] = fio_keyword_replace(opts[i]);
2150                 ret |= parse_option(opts[i], options, td);
2151         }
2152
2153         return ret;
2154 }
2155
2156 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2157 {
2158         return parse_cmd_option(opt, val, options, td);
2159 }
2160
2161 void fio_fill_default_options(struct thread_data *td)
2162 {
2163         fill_default_options(td, options);
2164 }
2165
2166 int fio_show_option_help(const char *opt)
2167 {
2168         return show_cmd_help(options, opt);
2169 }
2170
2171 static void __options_mem(struct thread_data *td, int alloc)
2172 {
2173         struct thread_options *o = &td->o;
2174         struct fio_option *opt;
2175         char **ptr;
2176         int i;
2177
2178         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
2179                 if (opt->type != FIO_OPT_STR_STORE)
2180                         continue;
2181
2182                 ptr = (void *) o + opt->off1;
2183                 if (*ptr) {
2184                         if (alloc)
2185                                 *ptr = strdup(*ptr);
2186                         else {
2187                                 free(*ptr);
2188                                 *ptr = NULL;
2189                         }
2190                 }
2191         }
2192 }
2193
2194 /*
2195  * dupe FIO_OPT_STR_STORE options
2196  */
2197 void options_mem_dupe(struct thread_data *td)
2198 {
2199         __options_mem(td, 1);
2200 }
2201
2202 void options_mem_free(struct thread_data fio_unused *td)
2203 {
2204 #if 0
2205         __options_mem(td, 0);
2206 #endif
2207 }
2208
2209 unsigned int fio_get_kb_base(void *data)
2210 {
2211         struct thread_data *td = data;
2212         unsigned int kb_base = 0;
2213
2214         if (td)
2215                 kb_base = td->o.kb_base;
2216         if (!kb_base)
2217                 kb_base = 1024;
2218
2219         return kb_base;
2220 }
2221
2222 int add_option(struct fio_option *o)
2223 {
2224         struct fio_option *__o;
2225         int opt_index = 0;
2226
2227         __o = options;
2228         while (__o->name) {
2229                 opt_index++;
2230                 __o++;
2231         }
2232
2233         memcpy(&options[opt_index], o, sizeof(*o));
2234         return 0;
2235 }
2236
2237 void invalidate_profile_options(const char *prof_name)
2238 {
2239         struct fio_option *o;
2240
2241         o = options;
2242         while (o->name) {
2243                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2244                         o->type = FIO_OPT_INVALID;
2245                         o->prof_name = NULL;
2246                 }
2247                 o++;
2248         }
2249 }
2250
2251 void add_opt_posval(const char *optname, const char *ival, const char *help)
2252 {
2253         struct fio_option *o;
2254         unsigned int i;
2255
2256         o = find_option(options, optname);
2257         if (!o)
2258                 return;
2259
2260         for (i = 0; i < PARSE_MAX_VP; i++) {
2261                 if (o->posval[i].ival)
2262                         continue;
2263
2264                 o->posval[i].ival = ival;
2265                 o->posval[i].help = help;
2266                 break;
2267         }
2268 }
2269
2270 void del_opt_posval(const char *optname, const char *ival)
2271 {
2272         struct fio_option *o;
2273         unsigned int i;
2274
2275         o = find_option(options, optname);
2276         if (!o)
2277                 return;
2278
2279         for (i = 0; i < PARSE_MAX_VP; i++) {
2280                 if (!o->posval[i].ival)
2281                         continue;
2282                 if (strcmp(o->posval[i].ival, ival))
2283                         continue;
2284
2285                 o->posval[i].ival = NULL;
2286                 o->posval[i].help = NULL;
2287         }
2288 }