options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <getopt.h>
   7 #include <assert.h>
   8 #include <libgen.h>
   9 #include <fcntl.h>
  10 #include <sys/types.h>
  11 #include <sys/stat.h>
  12
  13 #include "fio.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16
  17 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  18
  19 /*
  20  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  21  */
  22 static char *get_opt_postfix(const char *str)
  23 {
  24         char *p = strstr(str, ":");
  25
  26         if (!p)
  27                 return NULL;
  28
  29         p++;
  30         strip_blank_front(&p);
  31         strip_blank_end(p);
  32         return strdup(p);
  33 }
  34
  35 static int bs_cmp(const void *p1, const void *p2)
  36 {
  37         const struct bssplit *bsp1 = p1;
  38         const struct bssplit *bsp2 = p2;
  39
  40         return bsp1->perc < bsp2->perc;
  41 }
  42
  43 static int str_bssplit_cb(void *data, const char *input)
  44 {
  45         struct thread_data *td = data;
  46         char *fname, *str, *p;
  47         unsigned int i, perc, perc_missing;
  48         unsigned int max_bs, min_bs;
  49         long long val;
  50
  51         p = str = strdup(input);
  52
  53         strip_blank_front(&str);
  54         strip_blank_end(str);
  55
  56         td->o.bssplit_nr = 4;
  57         td->o.bssplit = malloc(4 * sizeof(struct bssplit));
  58
  59         i = 0;
  60         max_bs = 0;
  61         min_bs = -1;
  62         while ((fname = strsep(&str, ":")) != NULL) {
  63                 char *perc_str;
  64
  65                 if (!strlen(fname))
  66                         break;
  67
  68                 /*
  69                  * grow struct buffer, if needed
  70                  */
  71                 if (i == td->o.bssplit_nr) {
  72                         td->o.bssplit_nr <<= 1;
  73                         td->o.bssplit = realloc(td->o.bssplit,
  74                                                 td->o.bssplit_nr
  75                                                   * sizeof(struct bssplit));
  76                 }
  77
  78                 perc_str = strstr(fname, "/");
  79                 if (perc_str) {
  80                         *perc_str = '\0';
  81                         perc_str++;
  82                         perc = atoi(perc_str);
  83                         if (perc > 100)
  84                                 perc = 100;
  85                         else if (!perc)
  86                                 perc = -1;
  87                 } else
  88                         perc = -1;
  89
  90                 if (str_to_decimal(fname, &val, 1)) {
  91                         log_err("fio: bssplit conversion failed\n");
  92                         free(td->o.bssplit);
  93                         return 1;
  94                 }
  95
  96                 if (val > max_bs)
  97                         max_bs = val;
  98                 if (val < min_bs)
  99                         min_bs = val;
 100
 101                 td->o.bssplit[i].bs = val;
 102                 td->o.bssplit[i].perc = perc;
 103                 i++;
 104         }
 105
 106         td->o.bssplit_nr = i;
 107
 108         /*
 109          * Now check if the percentages add up, and how much is missing
 110          */
 111         perc = perc_missing = 0;
 112         for (i = 0; i < td->o.bssplit_nr; i++) {
 113                 struct bssplit *bsp = &td->o.bssplit[i];
 114
 115                 if (bsp->perc == (unsigned char) -1)
 116                         perc_missing++;
 117                 else
 118                         perc += bsp->perc;
 119         }
 120
 121         if (perc > 100) {
 122                 log_err("fio: bssplit percentages add to more than 100%%\n");
 123                 free(td->o.bssplit);
 124                 return 1;
 125         }
 126         /*
 127          * If values didn't have a percentage set, divide the remains between
 128          * them.
 129          */
 130         if (perc_missing) {
 131                 for (i = 0; i < td->o.bssplit_nr; i++) {
 132                         struct bssplit *bsp = &td->o.bssplit[i];
 133
 134                         if (bsp->perc == (unsigned char) -1)
 135                                 bsp->perc = (100 - perc) / perc_missing;
 136                 }
 137         }
 138
 139         td->o.min_bs[DDIR_READ] = td->o.min_bs[DDIR_WRITE] = min_bs;
 140         td->o.max_bs[DDIR_READ] = td->o.max_bs[DDIR_WRITE] = max_bs;
 141
 142         /*
 143          * now sort based on percentages, for ease of lookup
 144          */
 145         qsort(td->o.bssplit, td->o.bssplit_nr, sizeof(struct bssplit), bs_cmp);
 146
 147         free(p);
 148         return 0;
 149 }
 150
 151 static int str_rw_cb(void *data, const char *str)
 152 {
 153         struct thread_data *td = data;
 154         char *nr = get_opt_postfix(str);
 155
 156         td->o.ddir_nr = 1;
 157         if (nr) {
 158                 td->o.ddir_nr = atoi(nr);
 159                 free(nr);
 160         }
 161
 162         return 0;
 163 }
 164
 165 static int str_mem_cb(void *data, const char *mem)
 166 {
 167         struct thread_data *td = data;
 168
 169         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 170                 td->mmapfile = get_opt_postfix(mem);
 171                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 172                         log_err("fio: mmaphuge:/path/to/file\n");
 173                         return 1;
 174                 }
 175         }
 176
 177         return 0;
 178 }
 179
 180 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
 181 {
 182         mlock_size = *val;
 183         return 0;
 184 }
 185
 186 static int str_rwmix_read_cb(void *data, unsigned int *val)
 187 {
 188         struct thread_data *td = data;
 189
 190         td->o.rwmix[DDIR_READ] = *val;
 191         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 192         return 0;
 193 }
 194
 195 static int str_rwmix_write_cb(void *data, unsigned int *val)
 196 {
 197         struct thread_data *td = data;
 198
 199         td->o.rwmix[DDIR_WRITE] = *val;
 200         td->o.rwmix[DDIR_READ] = 100 - *val;
 201         return 0;
 202 }
 203
 204 #ifdef FIO_HAVE_IOPRIO
 205 static int str_prioclass_cb(void *data, unsigned int *val)
 206 {
 207         struct thread_data *td = data;
 208         unsigned short mask;
 209
 210         /*
 211          * mask off old class bits, str_prio_cb() may have set a default class
 212          */
 213         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 214         td->ioprio &= mask;
 215
 216         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 217         td->ioprio_set = 1;
 218         return 0;
 219 }
 220
 221 static int str_prio_cb(void *data, unsigned int *val)
 222 {
 223         struct thread_data *td = data;
 224
 225         td->ioprio |= *val;
 226
 227         /*
 228          * If no class is set, assume BE
 229          */
 230         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 231                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 232
 233         td->ioprio_set = 1;
 234         return 0;
 235 }
 236 #endif
 237
 238 static int str_exitall_cb(void)
 239 {
 240         exitall_on_terminate = 1;
 241         return 0;
 242 }
 243
 244 #ifdef FIO_HAVE_CPU_AFFINITY
 245 static int str_cpumask_cb(void *data, unsigned int *val)
 246 {
 247         struct thread_data *td = data;
 248         unsigned int i;
 249         long max_cpu;
 250         int ret;
 251
 252         ret = fio_cpuset_init(&td->o.cpumask);
 253         if (ret < 0) {
 254                 log_err("fio: cpuset_init failed\n");
 255                 td_verror(td, ret, "fio_cpuset_init");
 256                 return 1;
 257         }
 258
 259         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 260
 261         for (i = 0; i < sizeof(int) * 8; i++) {
 262                 if ((1 << i) & *val) {
 263                         if (i > max_cpu) {
 264                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 265                                                                 max_cpu);
 266                                 return 1;
 267                         }
 268                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 269                         fio_cpu_set(&td->o.cpumask, i);
 270                 }
 271         }
 272
 273         td->o.cpumask_set = 1;
 274         return 0;
 275 }
 276
 277 static int str_cpus_allowed_cb(void *data, const char *input)
 278 {
 279         struct thread_data *td = data;
 280         char *cpu, *str, *p;
 281         long max_cpu;
 282         int ret = 0;
 283
 284         ret = fio_cpuset_init(&td->o.cpumask);
 285         if (ret < 0) {
 286                 log_err("fio: cpuset_init failed\n");
 287                 td_verror(td, ret, "fio_cpuset_init");
 288                 return 1;
 289         }
 290
 291         p = str = strdup(input);
 292
 293         strip_blank_front(&str);
 294         strip_blank_end(str);
 295
 296         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 297
 298         while ((cpu = strsep(&str, ",")) != NULL) {
 299                 char *str2, *cpu2;
 300                 int icpu, icpu2;
 301
 302                 if (!strlen(cpu))
 303                         break;
 304
 305                 str2 = cpu;
 306                 icpu2 = -1;
 307                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 308                         if (!strlen(cpu2))
 309                                 break;
 310
 311                         icpu2 = atoi(cpu2);
 312                 }
 313
 314                 icpu = atoi(cpu);
 315                 if (icpu2 == -1)
 316                         icpu2 = icpu;
 317                 while (icpu <= icpu2) {
 318                         if (icpu >= FIO_MAX_CPUS) {
 319                                 log_err("fio: your OS only supports up to"
 320                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 321                                 ret = 1;
 322                                 break;
 323                         }
 324                         if (icpu > max_cpu) {
 325                                 log_err("fio: CPU %d too large (max=%ld)\n",
 326                                                         icpu, max_cpu);
 327                                 ret = 1;
 328                                 break;
 329                         }
 330
 331                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 332                         fio_cpu_set(&td->o.cpumask, icpu);
 333                         icpu++;
 334                 }
 335                 if (ret)
 336                         break;
 337         }
 338
 339         free(p);
 340         if (!ret)
 341                 td->o.cpumask_set = 1;
 342         return ret;
 343 }
 344 #endif
 345
 346 static int str_fst_cb(void *data, const char *str)
 347 {
 348         struct thread_data *td = data;
 349         char *nr = get_opt_postfix(str);
 350
 351         td->file_service_nr = 1;
 352         if (nr) {
 353                 td->file_service_nr = atoi(nr);
 354                 free(nr);
 355         }
 356
 357         return 0;
 358 }
 359
 360 static int check_dir(struct thread_data *td, char *fname)
 361 {
 362         char file[PATH_MAX], *dir;
 363         int elen = 0;
 364
 365         if (td->o.directory) {
 366                 strcpy(file, td->o.directory);
 367                 strcat(file, "/");
 368                 elen = strlen(file);
 369         }
 370
 371         sprintf(file + elen, "%s", fname);
 372         dir = dirname(file);
 373
 374 #if 0
 375         {
 376         struct stat sb;
 377         /*
 378          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 379          * yet, so we can't do this check right here...
 380          */
 381         if (lstat(dir, &sb) < 0) {
 382                 int ret = errno;
 383
 384                 log_err("fio: %s is not a directory\n", dir);
 385                 td_verror(td, ret, "lstat");
 386                 return 1;
 387         }
 388
 389         if (!S_ISDIR(sb.st_mode)) {
 390                 log_err("fio: %s is not a directory\n", dir);
 391                 return 1;
 392         }
 393         }
 394 #endif
 395
 396         return 0;
 397 }
 398
 399 static int str_filename_cb(void *data, const char *input)
 400 {
 401         struct thread_data *td = data;
 402         char *fname, *str, *p;
 403
 404         p = str = strdup(input);
 405
 406         strip_blank_front(&str);
 407         strip_blank_end(str);
 408
 409         if (!td->files_index)
 410                 td->o.nr_files = 0;
 411
 412         while ((fname = strsep(&str, ":")) != NULL) {
 413                 if (!strlen(fname))
 414                         break;
 415                 if (check_dir(td, fname)) {
 416                         free(p);
 417                         return 1;
 418                 }
 419                 add_file(td, fname);
 420                 td->o.nr_files++;
 421         }
 422
 423         free(p);
 424         return 0;
 425 }
 426
 427 static int str_directory_cb(void *data, const char fio_unused *str)
 428 {
 429         struct thread_data *td = data;
 430         struct stat sb;
 431
 432         if (lstat(td->o.directory, &sb) < 0) {
 433                 int ret = errno;
 434
 435                 log_err("fio: %s is not a directory\n", td->o.directory);
 436                 td_verror(td, ret, "lstat");
 437                 return 1;
 438         }
 439         if (!S_ISDIR(sb.st_mode)) {
 440                 log_err("fio: %s is not a directory\n", td->o.directory);
 441                 return 1;
 442         }
 443
 444         return 0;
 445 }
 446
 447 static int str_opendir_cb(void *data, const char fio_unused *str)
 448 {
 449         struct thread_data *td = data;
 450
 451         if (!td->files_index)
 452                 td->o.nr_files = 0;
 453
 454         return add_dir_files(td, td->o.opendir);
 455 }
 456
 457 static int str_verify_offset_cb(void *data, unsigned int *off)
 458 {
 459         struct thread_data *td = data;
 460
 461         if (*off && *off < sizeof(struct verify_header)) {
 462                 log_err("fio: verify_offset too small\n");
 463                 return 1;
 464         }
 465
 466         td->o.verify_offset = *off;
 467         return 0;
 468 }
 469
 470 static int str_verify_pattern_cb(void *data, unsigned int *off)
 471 {
 472         struct thread_data *td = data;
 473         unsigned int msb;
 474
 475         msb = __fls(*off);
 476         if (msb <= 8)
 477                 td->o.verify_pattern_bytes = 1;
 478         else if (msb <= 16)
 479                 td->o.verify_pattern_bytes = 2;
 480         else if (msb <= 24)
 481                 td->o.verify_pattern_bytes = 3;
 482         else
 483                 td->o.verify_pattern_bytes = 4;
 484
 485         td->o.verify_pattern = *off;
 486         return 0;
 487 }
 488
 489 static int str_lockfile_cb(void *data, const char *str)
 490 {
 491         struct thread_data *td = data;
 492         char *nr = get_opt_postfix(str);
 493
 494         td->o.lockfile_batch = 1;
 495         if (nr) {
 496                 td->o.lockfile_batch = atoi(nr);
 497                 free(nr);
 498         }
 499
 500         return 0;
 501 }
 502
 503 static int str_write_bw_log_cb(void *data, const char *str)
 504 {
 505         struct thread_data *td = data;
 506
 507         if (str)
 508                 td->o.bw_log_file = strdup(str);
 509
 510         td->o.write_bw_log = 1;
 511         return 0;
 512 }
 513
 514 static int str_write_lat_log_cb(void *data, const char *str)
 515 {
 516         struct thread_data *td = data;
 517
 518         if (str)
 519                 td->o.lat_log_file = strdup(str);
 520
 521         td->o.write_lat_log = 1;
 522         return 0;
 523 }
 524
 525 static int str_gtod_reduce_cb(void *data, int *il)
 526 {
 527         struct thread_data *td = data;
 528         int val = *il;
 529
 530         td->o.disable_clat = !!val;
 531         td->o.disable_slat = !!val;
 532         td->o.disable_bw = !!val;
 533         if (val)
 534                 td->tv_cache_mask = 63;
 535
 536         return 0;
 537 }
 538
 539 static int str_gtod_cpu_cb(void *data, int *il)
 540 {
 541         struct thread_data *td = data;
 542         int val = *il;
 543
 544         td->o.gtod_cpu = val;
 545         td->o.gtod_offload = 1;
 546         return 0;
 547 }
 548
 549 #define __stringify_1(x)        #x
 550 #define __stringify(x)          __stringify_1(x)
 551
 552 /*
 553  * Map of job/command line options
 554  */
 555 static struct fio_option options[] = {
 556         {
 557                 .name   = "description",
 558                 .type   = FIO_OPT_STR_STORE,
 559                 .off1   = td_var_offset(description),
 560                 .help   = "Text job description",
 561         },
 562         {
 563                 .name   = "name",
 564                 .type   = FIO_OPT_STR_STORE,
 565                 .off1   = td_var_offset(name),
 566                 .help   = "Name of this job",
 567         },
 568         {
 569                 .name   = "directory",
 570                 .type   = FIO_OPT_STR_STORE,
 571                 .off1   = td_var_offset(directory),
 572                 .cb     = str_directory_cb,
 573                 .help   = "Directory to store files in",
 574         },
 575         {
 576                 .name   = "filename",
 577                 .type   = FIO_OPT_STR_STORE,
 578                 .off1   = td_var_offset(filename),
 579                 .cb     = str_filename_cb,
 580                 .prio   = 1, /* must come before "directory" */
 581                 .help   = "File(s) to use for the workload",
 582         },
 583         {
 584                 .name   = "lockfile",
 585                 .type   = FIO_OPT_STR,
 586                 .cb     = str_lockfile_cb,
 587                 .off1   = td_var_offset(file_lock_mode),
 588                 .help   = "Lock file when doing IO to it",
 589                 .parent = "filename",
 590                 .def    = "none",
 591                 .posval = {
 592                           { .ival = "none",
 593                             .oval = FILE_LOCK_NONE,
 594                             .help = "No file locking",
 595                           },
 596                           { .ival = "exclusive",
 597                             .oval = FILE_LOCK_EXCLUSIVE,
 598                             .help = "Exclusive file lock",
 599                           },
 600                           {
 601                             .ival = "readwrite",
 602                             .oval = FILE_LOCK_READWRITE,
 603                             .help = "Read vs write lock",
 604                           },
 605                 },
 606         },
 607         {
 608                 .name   = "opendir",
 609                 .type   = FIO_OPT_STR_STORE,
 610                 .off1   = td_var_offset(opendir),
 611                 .cb     = str_opendir_cb,
 612                 .help   = "Recursively add files from this directory and down",
 613         },
 614         {
 615                 .name   = "rw",
 616                 .alias  = "readwrite",
 617                 .type   = FIO_OPT_STR,
 618                 .cb     = str_rw_cb,
 619                 .off1   = td_var_offset(td_ddir),
 620                 .help   = "IO direction",
 621                 .def    = "read",
 622                 .posval = {
 623                           { .ival = "read",
 624                             .oval = TD_DDIR_READ,
 625                             .help = "Sequential read",
 626                           },
 627                           { .ival = "write",
 628                             .oval = TD_DDIR_WRITE,
 629                             .help = "Sequential write",
 630                           },
 631                           { .ival = "randread",
 632                             .oval = TD_DDIR_RANDREAD,
 633                             .help = "Random read",
 634                           },
 635                           { .ival = "randwrite",
 636                             .oval = TD_DDIR_RANDWRITE,
 637                             .help = "Random write",
 638                           },
 639                           { .ival = "rw",
 640                             .oval = TD_DDIR_RW,
 641                             .help = "Sequential read and write mix",
 642                           },
 643                           { .ival = "randrw",
 644                             .oval = TD_DDIR_RANDRW,
 645                             .help = "Random read and write mix"
 646                           },
 647                 },
 648         },
 649         {
 650                 .name   = "ioengine",
 651                 .type   = FIO_OPT_STR_STORE,
 652                 .off1   = td_var_offset(ioengine),
 653                 .help   = "IO engine to use",
 654                 .def    = "sync",
 655                 .posval = {
 656                           { .ival = "sync",
 657                             .help = "Use read/write",
 658                           },
 659                           { .ival = "psync",
 660                             .help = "Use pread/pwrite",
 661                           },
 662                           { .ival = "vsync",
 663                              .help = "Use readv/writev",
 664                           },
 665 #ifdef FIO_HAVE_LIBAIO
 666                           { .ival = "libaio",
 667                             .help = "Linux native asynchronous IO",
 668                           },
 669 #endif
 670 #ifdef FIO_HAVE_POSIXAIO
 671                           { .ival = "posixaio",
 672                             .help = "POSIX asynchronous IO",
 673                           },
 674 #endif
 675 #ifdef FIO_HAVE_SOLARISAIO
 676                           { .ival = "solarisaio",
 677                             .help = "Solaris native asynchronous IO",
 678                           },
 679 #endif
 680                           { .ival = "mmap",
 681                             .help = "Memory mapped IO",
 682                           },
 683 #ifdef FIO_HAVE_SPLICE
 684                           { .ival = "splice",
 685                             .help = "splice/vmsplice based IO",
 686                           },
 687                           { .ival = "netsplice",
 688                             .help = "splice/vmsplice to/from the network",
 689                           },
 690 #endif
 691 #ifdef FIO_HAVE_SGIO
 692                           { .ival = "sg",
 693                             .help = "SCSI generic v3 IO",
 694                           },
 695 #endif
 696                           { .ival = "null",
 697                             .help = "Testing engine (no data transfer)",
 698                           },
 699                           { .ival = "net",
 700                             .help = "Network IO",
 701                           },
 702 #ifdef FIO_HAVE_SYSLET
 703                           { .ival = "syslet-rw",
 704                             .help = "syslet enabled async pread/pwrite IO",
 705                           },
 706 #endif
 707                           { .ival = "cpuio",
 708                             .help = "CPU cycler burner engine",
 709                           },
 710 #ifdef FIO_HAVE_GUASI
 711                           { .ival = "guasi",
 712                             .help = "GUASI IO engine",
 713                           },
 714 #endif
 715                           { .ival = "external",
 716                             .help = "Load external engine (append name)",
 717                           },
 718                 },
 719         },
 720         {
 721                 .name   = "iodepth",
 722                 .type   = FIO_OPT_INT,
 723                 .off1   = td_var_offset(iodepth),
 724                 .help   = "Amount of IO buffers to keep in flight",
 725                 .minval = 1,
 726                 .def    = "1",
 727         },
 728         {
 729                 .name   = "iodepth_batch",
 730                 .alias  = "iodepth_batch_submit",
 731                 .type   = FIO_OPT_INT,
 732                 .off1   = td_var_offset(iodepth_batch),
 733                 .help   = "Number of IO buffers to submit in one go",
 734                 .parent = "iodepth",
 735                 .minval = 1,
 736                 .def    = "1",
 737         },
 738         {
 739                 .name   = "iodepth_batch_complete",
 740                 .type   = FIO_OPT_INT,
 741                 .off1   = td_var_offset(iodepth_batch_complete),
 742                 .help   = "Number of IO buffers to retrieve in one go",
 743                 .parent = "iodepth",
 744                 .minval = 0,
 745                 .def    = "1",
 746         },
 747         {
 748                 .name   = "iodepth_low",
 749                 .type   = FIO_OPT_INT,
 750                 .off1   = td_var_offset(iodepth_low),
 751                 .help   = "Low water mark for queuing depth",
 752                 .parent = "iodepth",
 753         },
 754         {
 755                 .name   = "size",
 756                 .type   = FIO_OPT_STR_VAL,
 757                 .off1   = td_var_offset(size),
 758                 .minval = 1,
 759                 .help   = "Total size of device or files",
 760         },
 761         {
 762                 .name   = "fill_device",
 763                 .type   = FIO_OPT_BOOL,
 764                 .off1   = td_var_offset(fill_device),
 765                 .help   = "Write until an ENOSPC error occurs",
 766                 .def    = "0",
 767         },
 768         {
 769                 .name   = "filesize",
 770                 .type   = FIO_OPT_STR_VAL,
 771                 .off1   = td_var_offset(file_size_low),
 772                 .off2   = td_var_offset(file_size_high),
 773                 .minval = 1,
 774                 .help   = "Size of individual files",
 775         },
 776         {
 777                 .name   = "offset",
 778                 .alias  = "fileoffset",
 779                 .type   = FIO_OPT_STR_VAL,
 780                 .off1   = td_var_offset(start_offset),
 781                 .help   = "Start IO from this offset",
 782                 .def    = "0",
 783         },
 784         {
 785                 .name   = "bs",
 786                 .alias  = "blocksize",
 787                 .type   = FIO_OPT_STR_VAL_INT,
 788                 .off1   = td_var_offset(bs[DDIR_READ]),
 789                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 790                 .minval = 1,
 791                 .help   = "Block size unit",
 792                 .def    = "4k",
 793                 .parent = "rw",
 794         },
 795         {
 796                 .name   = "bsrange",
 797                 .alias  = "blocksize_range",
 798                 .type   = FIO_OPT_RANGE,
 799                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 800                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 801                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 802                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 803                 .minval = 1,
 804                 .help   = "Set block size range (in more detail than bs)",
 805                 .parent = "rw",
 806         },
 807         {
 808                 .name   = "bssplit",
 809                 .type   = FIO_OPT_STR,
 810                 .cb     = str_bssplit_cb,
 811                 .help   = "Set a specific mix of block sizes",
 812                 .parent = "rw",
 813         },
 814         {
 815                 .name   = "bs_unaligned",
 816                 .alias  = "blocksize_unaligned",
 817                 .type   = FIO_OPT_STR_SET,
 818                 .off1   = td_var_offset(bs_unaligned),
 819                 .help   = "Don't sector align IO buffer sizes",
 820                 .parent = "rw",
 821         },
 822         {
 823                 .name   = "randrepeat",
 824                 .type   = FIO_OPT_BOOL,
 825                 .off1   = td_var_offset(rand_repeatable),
 826                 .help   = "Use repeatable random IO pattern",
 827                 .def    = "1",
 828                 .parent = "rw",
 829         },
 830         {
 831                 .name   = "norandommap",
 832                 .type   = FIO_OPT_STR_SET,
 833                 .off1   = td_var_offset(norandommap),
 834                 .help   = "Accept potential duplicate random blocks",
 835                 .parent = "rw",
 836         },
 837         {
 838                 .name   = "softrandommap",
 839                 .type   = FIO_OPT_BOOL,
 840                 .off1   = td_var_offset(softrandommap),
 841                 .help   = "Set norandommap if randommap allocation fails",
 842                 .parent = "norandommap",
 843                 .def    = "0",
 844         },
 845         {
 846                 .name   = "nrfiles",
 847                 .type   = FIO_OPT_INT,
 848                 .off1   = td_var_offset(nr_files),
 849                 .help   = "Split job workload between this number of files",
 850                 .def    = "1",
 851         },
 852         {
 853                 .name   = "openfiles",
 854                 .type   = FIO_OPT_INT,
 855                 .off1   = td_var_offset(open_files),
 856                 .help   = "Number of files to keep open at the same time",
 857         },
 858         {
 859                 .name   = "file_service_type",
 860                 .type   = FIO_OPT_STR,
 861                 .cb     = str_fst_cb,
 862                 .off1   = td_var_offset(file_service_type),
 863                 .help   = "How to select which file to service next",
 864                 .def    = "roundrobin",
 865                 .posval = {
 866                           { .ival = "random",
 867                             .oval = FIO_FSERVICE_RANDOM,
 868                             .help = "Choose a file at random",
 869                           },
 870                           { .ival = "roundrobin",
 871                             .oval = FIO_FSERVICE_RR,
 872                             .help = "Round robin select files",
 873                           },
 874                           { .ival = "sequential",
 875                             .oval = FIO_FSERVICE_SEQ,
 876                             .help = "Finish one file before moving to the next",
 877                           },
 878                 },
 879                 .parent = "nrfiles",
 880         },
 881         {
 882                 .name   = "fadvise_hint",
 883                 .type   = FIO_OPT_BOOL,
 884                 .off1   = td_var_offset(fadvise_hint),
 885                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 886                 .def    = "1",
 887         },
 888         {
 889                 .name   = "fsync",
 890                 .type   = FIO_OPT_INT,
 891                 .off1   = td_var_offset(fsync_blocks),
 892                 .help   = "Issue fsync for writes every given number of blocks",
 893                 .def    = "0",
 894         },
 895         {
 896                 .name   = "direct",
 897                 .type   = FIO_OPT_BOOL,
 898                 .off1   = td_var_offset(odirect),
 899                 .help   = "Use O_DIRECT IO (negates buffered)",
 900                 .def    = "0",
 901         },
 902         {
 903                 .name   = "buffered",
 904                 .type   = FIO_OPT_BOOL,
 905                 .off1   = td_var_offset(odirect),
 906                 .neg    = 1,
 907                 .help   = "Use buffered IO (negates direct)",
 908                 .def    = "1",
 909         },
 910         {
 911                 .name   = "overwrite",
 912                 .type   = FIO_OPT_BOOL,
 913                 .off1   = td_var_offset(overwrite),
 914                 .help   = "When writing, set whether to overwrite current data",
 915                 .def    = "0",
 916         },
 917         {
 918                 .name   = "loops",
 919                 .type   = FIO_OPT_INT,
 920                 .off1   = td_var_offset(loops),
 921                 .help   = "Number of times to run the job",
 922                 .def    = "1",
 923         },
 924         {
 925                 .name   = "numjobs",
 926                 .type   = FIO_OPT_INT,
 927                 .off1   = td_var_offset(numjobs),
 928                 .help   = "Duplicate this job this many times",
 929                 .def    = "1",
 930         },
 931         {
 932                 .name   = "startdelay",
 933                 .type   = FIO_OPT_INT,
 934                 .off1   = td_var_offset(start_delay),
 935                 .help   = "Only start job when this period has passed",
 936                 .def    = "0",
 937         },
 938         {
 939                 .name   = "runtime",
 940                 .alias  = "timeout",
 941                 .type   = FIO_OPT_STR_VAL_TIME,
 942                 .off1   = td_var_offset(timeout),
 943                 .help   = "Stop workload when this amount of time has passed",
 944                 .def    = "0",
 945         },
 946         {
 947                 .name   = "time_based",
 948                 .type   = FIO_OPT_STR_SET,
 949                 .off1   = td_var_offset(time_based),
 950                 .help   = "Keep running until runtime/timeout is met",
 951         },
 952         {
 953                 .name   = "ramp_time",
 954                 .type   = FIO_OPT_STR_VAL_TIME,
 955                 .off1   = td_var_offset(ramp_time),
 956                 .help   = "Ramp up time before measuring performance",
 957         },
 958         {
 959                 .name   = "mem",
 960                 .alias  = "iomem",
 961                 .type   = FIO_OPT_STR,
 962                 .cb     = str_mem_cb,
 963                 .off1   = td_var_offset(mem_type),
 964                 .help   = "Backing type for IO buffers",
 965                 .def    = "malloc",
 966                 .posval = {
 967                           { .ival = "malloc",
 968                             .oval = MEM_MALLOC,
 969                             .help = "Use malloc(3) for IO buffers",
 970                           },
 971                           { .ival = "shm",
 972                             .oval = MEM_SHM,
 973                             .help = "Use shared memory segments for IO buffers",
 974                           },
 975 #ifdef FIO_HAVE_HUGETLB
 976                           { .ival = "shmhuge",
 977                             .oval = MEM_SHMHUGE,
 978                             .help = "Like shm, but use huge pages",
 979                           },
 980 #endif
 981                           { .ival = "mmap",
 982                             .oval = MEM_MMAP,
 983                             .help = "Use mmap(2) (file or anon) for IO buffers",
 984                           },
 985 #ifdef FIO_HAVE_HUGETLB
 986                           { .ival = "mmaphuge",
 987                             .oval = MEM_MMAPHUGE,
 988                             .help = "Like mmap, but use huge pages",
 989                           },
 990 #endif
 991                   },
 992         },
 993         {
 994                 .name   = "verify",
 995                 .type   = FIO_OPT_STR,
 996                 .off1   = td_var_offset(verify),
 997                 .help   = "Verify data written",
 998                 .def    = "0",
 999                 .posval = {
1000                           { .ival = "0",
1001                             .oval = VERIFY_NONE,
1002                             .help = "Don't do IO verification",
1003                           },
1004                           { .ival = "md5",
1005                             .oval = VERIFY_MD5,
1006                             .help = "Use md5 checksums for verification",
1007                           },
1008                           { .ival = "crc64",
1009                             .oval = VERIFY_CRC64,
1010                             .help = "Use crc64 checksums for verification",
1011                           },
1012                           { .ival = "crc32",
1013                             .oval = VERIFY_CRC32,
1014                             .help = "Use crc32 checksums for verification",
1015                           },
1016                           { .ival = "crc32c-intel",
1017                             .oval = VERIFY_CRC32C_INTEL,
1018                             .help = "Use hw crc32c checksums for verification",
1019                           },
1020                           { .ival = "crc32c",
1021                             .oval = VERIFY_CRC32C,
1022                             .help = "Use crc32c checksums for verification",
1023                           },
1024                           { .ival = "crc16",
1025                             .oval = VERIFY_CRC16,
1026                             .help = "Use crc16 checksums for verification",
1027                           },
1028                           { .ival = "crc7",
1029                             .oval = VERIFY_CRC7,
1030                             .help = "Use crc7 checksums for verification",
1031                           },
1032                           { .ival = "sha256",
1033                             .oval = VERIFY_SHA256,
1034                             .help = "Use sha256 checksums for verification",
1035                           },
1036                           { .ival = "sha512",
1037                             .oval = VERIFY_SHA512,
1038                             .help = "Use sha512 checksums for verification",
1039                           },
1040                           { .ival = "meta",
1041                             .oval = VERIFY_META,
1042                             .help = "Use io information",
1043                           },
1044                           {
1045                             .ival = "null",
1046                             .oval = VERIFY_NULL,
1047                             .help = "Pretend to verify",
1048                           },
1049                 },
1050         },
1051         {
1052                 .name   = "do_verify",
1053                 .type   = FIO_OPT_BOOL,
1054                 .off1   = td_var_offset(do_verify),
1055                 .help   = "Run verification stage after write",
1056                 .def    = "1",
1057                 .parent = "verify",
1058         },
1059         {
1060                 .name   = "verifysort",
1061                 .type   = FIO_OPT_BOOL,
1062                 .off1   = td_var_offset(verifysort),
1063                 .help   = "Sort written verify blocks for read back",
1064                 .def    = "1",
1065                 .parent = "verify",
1066         },
1067         {
1068                 .name   = "verify_interval",
1069                 .type   = FIO_OPT_STR_VAL_INT,
1070                 .off1   = td_var_offset(verify_interval),
1071                 .minval = 2 * sizeof(struct verify_header),
1072                 .help   = "Store verify buffer header every N bytes",
1073                 .parent = "verify",
1074         },
1075         {
1076                 .name   = "verify_offset",
1077                 .type   = FIO_OPT_STR_VAL_INT,
1078                 .help   = "Offset verify header location by N bytes",
1079                 .def    = "0",
1080                 .cb     = str_verify_offset_cb,
1081                 .parent = "verify",
1082         },
1083         {
1084                 .name   = "verify_pattern",
1085                 .type   = FIO_OPT_INT,
1086                 .cb     = str_verify_pattern_cb,
1087                 .help   = "Fill pattern for IO buffers",
1088                 .parent = "verify",
1089         },
1090         {
1091                 .name   = "verify_fatal",
1092                 .type   = FIO_OPT_BOOL,
1093                 .off1   = td_var_offset(verify_fatal),
1094                 .def    = "0",
1095                 .help   = "Exit on a single verify failure, don't continue",
1096                 .parent = "verify",
1097         },
1098         {
1099                 .name   = "write_iolog",
1100                 .type   = FIO_OPT_STR_STORE,
1101                 .off1   = td_var_offset(write_iolog_file),
1102                 .help   = "Store IO pattern to file",
1103         },
1104         {
1105                 .name   = "read_iolog",
1106                 .type   = FIO_OPT_STR_STORE,
1107                 .off1   = td_var_offset(read_iolog_file),
1108                 .help   = "Playback IO pattern from file",
1109         },
1110         {
1111                 .name   = "exec_prerun",
1112                 .type   = FIO_OPT_STR_STORE,
1113                 .off1   = td_var_offset(exec_prerun),
1114                 .help   = "Execute this file prior to running job",
1115         },
1116         {
1117                 .name   = "exec_postrun",
1118                 .type   = FIO_OPT_STR_STORE,
1119                 .off1   = td_var_offset(exec_postrun),
1120                 .help   = "Execute this file after running job",
1121         },
1122 #ifdef FIO_HAVE_IOSCHED_SWITCH
1123         {
1124                 .name   = "ioscheduler",
1125                 .type   = FIO_OPT_STR_STORE,
1126                 .off1   = td_var_offset(ioscheduler),
1127                 .help   = "Use this IO scheduler on the backing device",
1128         },
1129 #endif
1130         {
1131                 .name   = "zonesize",
1132                 .type   = FIO_OPT_STR_VAL,
1133                 .off1   = td_var_offset(zone_size),
1134                 .help   = "Give size of an IO zone",
1135                 .def    = "0",
1136         },
1137         {
1138                 .name   = "zoneskip",
1139                 .type   = FIO_OPT_STR_VAL,
1140                 .off1   = td_var_offset(zone_skip),
1141                 .help   = "Space between IO zones",
1142                 .def    = "0",
1143         },
1144         {
1145                 .name   = "lockmem",
1146                 .type   = FIO_OPT_STR_VAL,
1147                 .cb     = str_lockmem_cb,
1148                 .help   = "Lock down this amount of memory",
1149                 .def    = "0",
1150         },
1151         {
1152                 .name   = "rwmixread",
1153                 .type   = FIO_OPT_INT,
1154                 .cb     = str_rwmix_read_cb,
1155                 .maxval = 100,
1156                 .help   = "Percentage of mixed workload that is reads",
1157                 .def    = "50",
1158         },
1159         {
1160                 .name   = "rwmixwrite",
1161                 .type   = FIO_OPT_INT,
1162                 .cb     = str_rwmix_write_cb,
1163                 .maxval = 100,
1164                 .help   = "Percentage of mixed workload that is writes",
1165                 .def    = "50",
1166         },
1167         {
1168                 .name   = "rwmixcycle",
1169                 .type   = FIO_OPT_DEPRECATED,
1170         },
1171         {
1172                 .name   = "nice",
1173                 .type   = FIO_OPT_INT,
1174                 .off1   = td_var_offset(nice),
1175                 .help   = "Set job CPU nice value",
1176                 .minval = -19,
1177                 .maxval = 20,
1178                 .def    = "0",
1179         },
1180 #ifdef FIO_HAVE_IOPRIO
1181         {
1182                 .name   = "prio",
1183                 .type   = FIO_OPT_INT,
1184                 .cb     = str_prio_cb,
1185                 .help   = "Set job IO priority value",
1186                 .minval = 0,
1187                 .maxval = 7,
1188         },
1189         {
1190                 .name   = "prioclass",
1191                 .type   = FIO_OPT_INT,
1192                 .cb     = str_prioclass_cb,
1193                 .help   = "Set job IO priority class",
1194                 .minval = 0,
1195                 .maxval = 3,
1196         },
1197 #endif
1198         {
1199                 .name   = "thinktime",
1200                 .type   = FIO_OPT_INT,
1201                 .off1   = td_var_offset(thinktime),
1202                 .help   = "Idle time between IO buffers (usec)",
1203                 .def    = "0",
1204         },
1205         {
1206                 .name   = "thinktime_spin",
1207                 .type   = FIO_OPT_INT,
1208                 .off1   = td_var_offset(thinktime_spin),
1209                 .help   = "Start think time by spinning this amount (usec)",
1210                 .def    = "0",
1211                 .parent = "thinktime",
1212         },
1213         {
1214                 .name   = "thinktime_blocks",
1215                 .type   = FIO_OPT_INT,
1216                 .off1   = td_var_offset(thinktime_blocks),
1217                 .help   = "IO buffer period between 'thinktime'",
1218                 .def    = "1",
1219                 .parent = "thinktime",
1220         },
1221         {
1222                 .name   = "rate",
1223                 .type   = FIO_OPT_INT,
1224                 .off1   = td_var_offset(rate),
1225                 .help   = "Set bandwidth rate",
1226         },
1227         {
1228                 .name   = "ratemin",
1229                 .type   = FIO_OPT_INT,
1230                 .off1   = td_var_offset(ratemin),
1231                 .help   = "Job must meet this rate or it will be shutdown",
1232                 .parent = "rate",
1233         },
1234         {
1235                 .name   = "rate_iops",
1236                 .type   = FIO_OPT_INT,
1237                 .off1   = td_var_offset(rate_iops),
1238                 .help   = "Limit IO used to this number of IO operations/sec",
1239         },
1240         {
1241                 .name   = "rate_iops_min",
1242                 .type   = FIO_OPT_INT,
1243                 .off1   = td_var_offset(rate_iops_min),
1244                 .help   = "Job must meet this rate or it will be shutdown",
1245                 .parent = "rate_iops",
1246         },
1247         {
1248                 .name   = "ratecycle",
1249                 .type   = FIO_OPT_INT,
1250                 .off1   = td_var_offset(ratecycle),
1251                 .help   = "Window average for rate limits (msec)",
1252                 .def    = "1000",
1253                 .parent = "rate",
1254         },
1255         {
1256                 .name   = "invalidate",
1257                 .type   = FIO_OPT_BOOL,
1258                 .off1   = td_var_offset(invalidate_cache),
1259                 .help   = "Invalidate buffer/page cache prior to running job",
1260                 .def    = "1",
1261         },
1262         {
1263                 .name   = "sync",
1264                 .type   = FIO_OPT_BOOL,
1265                 .off1   = td_var_offset(sync_io),
1266                 .help   = "Use O_SYNC for buffered writes",
1267                 .def    = "0",
1268                 .parent = "buffered",
1269         },
1270         {
1271                 .name   = "bwavgtime",
1272                 .type   = FIO_OPT_INT,
1273                 .off1   = td_var_offset(bw_avg_time),
1274                 .help   = "Time window over which to calculate bandwidth"
1275                           " (msec)",
1276                 .def    = "500",
1277         },
1278         {
1279                 .name   = "create_serialize",
1280                 .type   = FIO_OPT_BOOL,
1281                 .off1   = td_var_offset(create_serialize),
1282                 .help   = "Serialize creating of job files",
1283                 .def    = "1",
1284         },
1285         {
1286                 .name   = "create_fsync",
1287                 .type   = FIO_OPT_BOOL,
1288                 .off1   = td_var_offset(create_fsync),
1289                 .help   = "Fsync file after creation",
1290                 .def    = "1",
1291         },
1292         {
1293                 .name   = "create_on_open",
1294                 .type   = FIO_OPT_BOOL,
1295                 .off1   = td_var_offset(create_on_open),
1296                 .help   = "Create files when they are opened for IO",
1297                 .def    = "0",
1298         },
1299         {
1300                 .name   = "cpuload",
1301                 .type   = FIO_OPT_INT,
1302                 .off1   = td_var_offset(cpuload),
1303                 .help   = "Use this percentage of CPU",
1304         },
1305         {
1306                 .name   = "cpuchunks",
1307                 .type   = FIO_OPT_INT,
1308                 .off1   = td_var_offset(cpucycle),
1309                 .help   = "Length of the CPU burn cycles (usecs)",
1310                 .def    = "50000",
1311                 .parent = "cpuload",
1312         },
1313 #ifdef FIO_HAVE_CPU_AFFINITY
1314         {
1315                 .name   = "cpumask",
1316                 .type   = FIO_OPT_INT,
1317                 .cb     = str_cpumask_cb,
1318                 .help   = "CPU affinity mask",
1319         },
1320         {
1321                 .name   = "cpus_allowed",
1322                 .type   = FIO_OPT_STR,
1323                 .cb     = str_cpus_allowed_cb,
1324                 .help   = "Set CPUs allowed",
1325         },
1326 #endif
1327         {
1328                 .name   = "end_fsync",
1329                 .type   = FIO_OPT_BOOL,
1330                 .off1   = td_var_offset(end_fsync),
1331                 .help   = "Include fsync at the end of job",
1332                 .def    = "0",
1333         },
1334         {
1335                 .name   = "fsync_on_close",
1336                 .type   = FIO_OPT_BOOL,
1337                 .off1   = td_var_offset(fsync_on_close),
1338                 .help   = "fsync files on close",
1339                 .def    = "0",
1340         },
1341         {
1342                 .name   = "unlink",
1343                 .type   = FIO_OPT_BOOL,
1344                 .off1   = td_var_offset(unlink),
1345                 .help   = "Unlink created files after job has completed",
1346                 .def    = "0",
1347         },
1348         {
1349                 .name   = "exitall",
1350                 .type   = FIO_OPT_STR_SET,
1351                 .cb     = str_exitall_cb,
1352                 .help   = "Terminate all jobs when one exits",
1353         },
1354         {
1355                 .name   = "stonewall",
1356                 .type   = FIO_OPT_STR_SET,
1357                 .off1   = td_var_offset(stonewall),
1358                 .help   = "Insert a hard barrier between this job and previous",
1359         },
1360         {
1361                 .name   = "new_group",
1362                 .type   = FIO_OPT_STR_SET,
1363                 .off1   = td_var_offset(new_group),
1364                 .help   = "Mark the start of a new group (for reporting)",
1365         },
1366         {
1367                 .name   = "thread",
1368                 .type   = FIO_OPT_STR_SET,
1369                 .off1   = td_var_offset(use_thread),
1370                 .help   = "Use threads instead of forks",
1371         },
1372         {
1373                 .name   = "write_bw_log",
1374                 .type   = FIO_OPT_STR,
1375                 .off1   = td_var_offset(write_bw_log),
1376                 .cb     = str_write_bw_log_cb,
1377                 .help   = "Write log of bandwidth during run",
1378         },
1379         {
1380                 .name   = "write_lat_log",
1381                 .type   = FIO_OPT_STR,
1382                 .off1   = td_var_offset(write_lat_log),
1383                 .cb     = str_write_lat_log_cb,
1384                 .help   = "Write log of latency during run",
1385         },
1386         {
1387                 .name   = "hugepage-size",
1388                 .type   = FIO_OPT_STR_VAL_INT,
1389                 .off1   = td_var_offset(hugepage_size),
1390                 .help   = "When using hugepages, specify size of each page",
1391                 .def    = __stringify(FIO_HUGE_PAGE),
1392         },
1393         {
1394                 .name   = "group_reporting",
1395                 .type   = FIO_OPT_STR_SET,
1396                 .off1   = td_var_offset(group_reporting),
1397                 .help   = "Do reporting on a per-group basis",
1398         },
1399         {
1400                 .name   = "zero_buffers",
1401                 .type   = FIO_OPT_STR_SET,
1402                 .off1   = td_var_offset(zero_buffers),
1403                 .help   = "Init IO buffers to all zeroes",
1404         },
1405         {
1406                 .name   = "refill_buffers",
1407                 .type   = FIO_OPT_STR_SET,
1408                 .off1   = td_var_offset(refill_buffers),
1409                 .help   = "Refill IO buffers on every IO submit",
1410         },
1411 #ifdef FIO_HAVE_DISK_UTIL
1412         {
1413                 .name   = "disk_util",
1414                 .type   = FIO_OPT_BOOL,
1415                 .off1   = td_var_offset(do_disk_util),
1416                 .help   = "Log disk utilization statistics",
1417                 .def    = "1",
1418         },
1419 #endif
1420         {
1421                 .name   = "gtod_reduce",
1422                 .type   = FIO_OPT_BOOL,
1423                 .help   = "Greatly reduce number of gettimeofday() calls",
1424                 .cb     = str_gtod_reduce_cb,
1425                 .def    = "0",
1426         },
1427         {
1428                 .name   = "disable_clat",
1429                 .type   = FIO_OPT_BOOL,
1430                 .off1   = td_var_offset(disable_clat),
1431                 .help   = "Disable completion latency numbers",
1432                 .parent = "gtod_reduce",
1433                 .def    = "0",
1434         },
1435         {
1436                 .name   = "disable_slat",
1437                 .type   = FIO_OPT_BOOL,
1438                 .off1   = td_var_offset(disable_slat),
1439                 .help   = "Disable submissionn latency numbers",
1440                 .parent = "gtod_reduce",
1441                 .def    = "0",
1442         },
1443         {
1444                 .name   = "disable_bw_measurement",
1445                 .type   = FIO_OPT_BOOL,
1446                 .off1   = td_var_offset(disable_bw),
1447                 .help   = "Disable bandwidth logging",
1448                 .parent = "gtod_reduce",
1449                 .def    = "0",
1450         },
1451         {
1452                 .name   = "gtod_cpu",
1453                 .type   = FIO_OPT_INT,
1454                 .cb     = str_gtod_cpu_cb,
1455                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1456         },
1457         {
1458                 .name = NULL,
1459         },
1460 };
1461
1462 void fio_options_dup_and_init(struct option *long_options)
1463 {
1464         struct fio_option *o;
1465         unsigned int i;
1466
1467         options_init(options);
1468
1469         i = 0;
1470         while (long_options[i].name)
1471                 i++;
1472
1473         o = &options[0];
1474         while (o->name) {
1475                 long_options[i].name = (char *) o->name;
1476                 long_options[i].val = FIO_GETOPT_JOB;
1477                 if (o->type == FIO_OPT_STR_SET)
1478                         long_options[i].has_arg = no_argument;
1479                 else
1480                         long_options[i].has_arg = required_argument;
1481
1482                 i++;
1483                 o++;
1484                 assert(i < FIO_NR_OPTIONS);
1485         }
1486 }
1487
1488 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1489 {
1490         int i, ret;
1491
1492         sort_options(opts, options, num_opts);
1493
1494         for (ret = 0, i = 0; i < num_opts; i++)
1495                 ret |= parse_option(opts[i], options, td);
1496
1497         return ret;
1498 }
1499
1500 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1501 {
1502         return parse_cmd_option(opt, val, options, td);
1503 }
1504
1505 void fio_fill_default_options(struct thread_data *td)
1506 {
1507         fill_default_options(td, options);
1508 }
1509
1510 int fio_show_option_help(const char *opt)
1511 {
1512         return show_cmd_help(options, opt);
1513 }
1514
1515 static void __options_mem(struct thread_data *td, int alloc)
1516 {
1517         struct thread_options *o = &td->o;
1518         struct fio_option *opt;
1519         char **ptr;
1520         int i;
1521
1522         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1523                 if (opt->type != FIO_OPT_STR_STORE)
1524                         continue;
1525
1526                 ptr = (void *) o + opt->off1;
1527                 if (*ptr) {
1528                         if (alloc)
1529                                 *ptr = strdup(*ptr);
1530                         else {
1531                                 free(*ptr);
1532                                 *ptr = NULL;
1533                         }
1534                 }
1535         }
1536 }
1537
1538 /*
1539  * dupe FIO_OPT_STR_STORE options
1540  */
1541 void options_mem_dupe(struct thread_data *td)
1542 {
1543         __options_mem(td, 1);
1544 }
1545
1546 void options_mem_free(struct thread_data fio_unused *td)
1547 {
1548 #if 0
1549         __options_mem(td, 0);
1550 #endif
1551 }