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 bssplit_ddir(struct thread_data *td, int ddir, char *str)
  44 {
  45         struct bssplit *bssplit;
  46         unsigned int i, perc, perc_missing;
  47         unsigned int max_bs, min_bs;
  48         long long val;
  49         char *fname;
  50
  51         td->o.bssplit_nr[ddir] = 4;
  52         bssplit = malloc(4 * sizeof(struct bssplit));
  53
  54         i = 0;
  55         max_bs = 0;
  56         min_bs = -1;
  57         while ((fname = strsep(&str, ":")) != NULL) {
  58                 char *perc_str;
  59
  60                 if (!strlen(fname))
  61                         break;
  62
  63                 /*
  64                  * grow struct buffer, if needed
  65                  */
  66                 if (i == td->o.bssplit_nr[ddir]) {
  67                         td->o.bssplit_nr[ddir] <<= 1;
  68                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  69                                                   * sizeof(struct bssplit));
  70                 }
  71
  72                 perc_str = strstr(fname, "/");
  73                 if (perc_str) {
  74                         *perc_str = '\0';
  75                         perc_str++;
  76                         perc = atoi(perc_str);
  77                         if (perc > 100)
  78                                 perc = 100;
  79                         else if (!perc)
  80                                 perc = -1;
  81                 } else
  82                         perc = -1;
  83
  84                 if (str_to_decimal(fname, &val, 1)) {
  85                         log_err("fio: bssplit conversion failed\n");
  86                         free(td->o.bssplit);
  87                         return 1;
  88                 }
  89
  90                 if (val > max_bs)
  91                         max_bs = val;
  92                 if (val < min_bs)
  93                         min_bs = val;
  94
  95                 bssplit[i].bs = val;
  96                 bssplit[i].perc = perc;
  97                 i++;
  98         }
  99
 100         td->o.bssplit_nr[ddir] = i;
 101
 102         /*
 103          * Now check if the percentages add up, and how much is missing
 104          */
 105         perc = perc_missing = 0;
 106         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 107                 struct bssplit *bsp = &bssplit[i];
 108
 109                 if (bsp->perc == (unsigned char) -1)
 110                         perc_missing++;
 111                 else
 112                         perc += bsp->perc;
 113         }
 114
 115         if (perc > 100) {
 116                 log_err("fio: bssplit percentages add to more than 100%%\n");
 117                 free(bssplit);
 118                 return 1;
 119         }
 120         /*
 121          * If values didn't have a percentage set, divide the remains between
 122          * them.
 123          */
 124         if (perc_missing) {
 125                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 126                         struct bssplit *bsp = &bssplit[i];
 127
 128                         if (bsp->perc == (unsigned char) -1)
 129                                 bsp->perc = (100 - perc) / perc_missing;
 130                 }
 131         }
 132
 133         td->o.min_bs[ddir] = min_bs;
 134         td->o.max_bs[ddir] = max_bs;
 135
 136         /*
 137          * now sort based on percentages, for ease of lookup
 138          */
 139         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 140         td->o.bssplit[ddir] = bssplit;
 141         return 0;
 142
 143 }
 144
 145 static int str_bssplit_cb(void *data, const char *input)
 146 {
 147         struct thread_data *td = data;
 148         char *str, *p, *odir;
 149         int ret = 0;
 150
 151         p = str = strdup(input);
 152
 153         strip_blank_front(&str);
 154         strip_blank_end(str);
 155
 156         odir = strchr(str, ',');
 157         if (odir) {
 158                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 159                 if (!ret) {
 160                         *odir = '\0';
 161                         ret = bssplit_ddir(td, DDIR_READ, str);
 162                 }
 163         } else {
 164                 char *op;
 165
 166                 op = strdup(str);
 167
 168                 ret = bssplit_ddir(td, DDIR_READ, str);
 169                 if (!ret)
 170                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 171
 172                 free(op);
 173         }
 174
 175         free(p);
 176         return ret;
 177 }
 178
 179 static int str_rw_cb(void *data, const char *str)
 180 {
 181         struct thread_data *td = data;
 182         char *nr = get_opt_postfix(str);
 183
 184         td->o.ddir_nr = 1;
 185         if (nr) {
 186                 td->o.ddir_nr = atoi(nr);
 187                 free(nr);
 188         }
 189
 190         return 0;
 191 }
 192
 193 static int str_mem_cb(void *data, const char *mem)
 194 {
 195         struct thread_data *td = data;
 196
 197         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 198                 td->mmapfile = get_opt_postfix(mem);
 199                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 200                         log_err("fio: mmaphuge:/path/to/file\n");
 201                         return 1;
 202                 }
 203         }
 204
 205         return 0;
 206 }
 207
 208 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
 209 {
 210         mlock_size = *val;
 211         return 0;
 212 }
 213
 214 static int str_rwmix_read_cb(void *data, unsigned int *val)
 215 {
 216         struct thread_data *td = data;
 217
 218         td->o.rwmix[DDIR_READ] = *val;
 219         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 220         return 0;
 221 }
 222
 223 static int str_rwmix_write_cb(void *data, unsigned int *val)
 224 {
 225         struct thread_data *td = data;
 226
 227         td->o.rwmix[DDIR_WRITE] = *val;
 228         td->o.rwmix[DDIR_READ] = 100 - *val;
 229         return 0;
 230 }
 231
 232 #ifdef FIO_HAVE_IOPRIO
 233 static int str_prioclass_cb(void *data, unsigned int *val)
 234 {
 235         struct thread_data *td = data;
 236         unsigned short mask;
 237
 238         /*
 239          * mask off old class bits, str_prio_cb() may have set a default class
 240          */
 241         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 242         td->ioprio &= mask;
 243
 244         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 245         td->ioprio_set = 1;
 246         return 0;
 247 }
 248
 249 static int str_prio_cb(void *data, unsigned int *val)
 250 {
 251         struct thread_data *td = data;
 252
 253         td->ioprio |= *val;
 254
 255         /*
 256          * If no class is set, assume BE
 257          */
 258         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 259                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 260
 261         td->ioprio_set = 1;
 262         return 0;
 263 }
 264 #endif
 265
 266 static int str_exitall_cb(void)
 267 {
 268         exitall_on_terminate = 1;
 269         return 0;
 270 }
 271
 272 #ifdef FIO_HAVE_CPU_AFFINITY
 273 static int str_cpumask_cb(void *data, unsigned int *val)
 274 {
 275         struct thread_data *td = data;
 276         unsigned int i;
 277         long max_cpu;
 278         int ret;
 279
 280         ret = fio_cpuset_init(&td->o.cpumask);
 281         if (ret < 0) {
 282                 log_err("fio: cpuset_init failed\n");
 283                 td_verror(td, ret, "fio_cpuset_init");
 284                 return 1;
 285         }
 286
 287         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 288
 289         for (i = 0; i < sizeof(int) * 8; i++) {
 290                 if ((1 << i) & *val) {
 291                         if (i > max_cpu) {
 292                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 293                                                                 max_cpu);
 294                                 return 1;
 295                         }
 296                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 297                         fio_cpu_set(&td->o.cpumask, i);
 298                 }
 299         }
 300
 301         td->o.cpumask_set = 1;
 302         return 0;
 303 }
 304
 305 static int str_cpus_allowed_cb(void *data, const char *input)
 306 {
 307         struct thread_data *td = data;
 308         char *cpu, *str, *p;
 309         long max_cpu;
 310         int ret = 0;
 311
 312         ret = fio_cpuset_init(&td->o.cpumask);
 313         if (ret < 0) {
 314                 log_err("fio: cpuset_init failed\n");
 315                 td_verror(td, ret, "fio_cpuset_init");
 316                 return 1;
 317         }
 318
 319         p = str = strdup(input);
 320
 321         strip_blank_front(&str);
 322         strip_blank_end(str);
 323
 324         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 325
 326         while ((cpu = strsep(&str, ",")) != NULL) {
 327                 char *str2, *cpu2;
 328                 int icpu, icpu2;
 329
 330                 if (!strlen(cpu))
 331                         break;
 332
 333                 str2 = cpu;
 334                 icpu2 = -1;
 335                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 336                         if (!strlen(cpu2))
 337                                 break;
 338
 339                         icpu2 = atoi(cpu2);
 340                 }
 341
 342                 icpu = atoi(cpu);
 343                 if (icpu2 == -1)
 344                         icpu2 = icpu;
 345                 while (icpu <= icpu2) {
 346                         if (icpu >= FIO_MAX_CPUS) {
 347                                 log_err("fio: your OS only supports up to"
 348                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 349                                 ret = 1;
 350                                 break;
 351                         }
 352                         if (icpu > max_cpu) {
 353                                 log_err("fio: CPU %d too large (max=%ld)\n",
 354                                                         icpu, max_cpu);
 355                                 ret = 1;
 356                                 break;
 357                         }
 358
 359                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 360                         fio_cpu_set(&td->o.cpumask, icpu);
 361                         icpu++;
 362                 }
 363                 if (ret)
 364                         break;
 365         }
 366
 367         free(p);
 368         if (!ret)
 369                 td->o.cpumask_set = 1;
 370         return ret;
 371 }
 372 #endif
 373
 374 static int str_fst_cb(void *data, const char *str)
 375 {
 376         struct thread_data *td = data;
 377         char *nr = get_opt_postfix(str);
 378
 379         td->file_service_nr = 1;
 380         if (nr) {
 381                 td->file_service_nr = atoi(nr);
 382                 free(nr);
 383         }
 384
 385         return 0;
 386 }
 387
 388 static int check_dir(struct thread_data *td, char *fname)
 389 {
 390         char file[PATH_MAX], *dir;
 391         int elen = 0;
 392
 393         if (td->o.directory) {
 394                 strcpy(file, td->o.directory);
 395                 strcat(file, "/");
 396                 elen = strlen(file);
 397         }
 398
 399         sprintf(file + elen, "%s", fname);
 400         dir = dirname(file);
 401
 402 #if 0
 403         {
 404         struct stat sb;
 405         /*
 406          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 407          * yet, so we can't do this check right here...
 408          */
 409         if (lstat(dir, &sb) < 0) {
 410                 int ret = errno;
 411
 412                 log_err("fio: %s is not a directory\n", dir);
 413                 td_verror(td, ret, "lstat");
 414                 return 1;
 415         }
 416
 417         if (!S_ISDIR(sb.st_mode)) {
 418                 log_err("fio: %s is not a directory\n", dir);
 419                 return 1;
 420         }
 421         }
 422 #endif
 423
 424         return 0;
 425 }
 426
 427 static int str_filename_cb(void *data, const char *input)
 428 {
 429         struct thread_data *td = data;
 430         char *fname, *str, *p;
 431
 432         p = str = strdup(input);
 433
 434         strip_blank_front(&str);
 435         strip_blank_end(str);
 436
 437         if (!td->files_index)
 438                 td->o.nr_files = 0;
 439
 440         while ((fname = strsep(&str, ":")) != NULL) {
 441                 if (!strlen(fname))
 442                         break;
 443                 if (check_dir(td, fname)) {
 444                         free(p);
 445                         return 1;
 446                 }
 447                 add_file(td, fname);
 448                 td->o.nr_files++;
 449         }
 450
 451         free(p);
 452         return 0;
 453 }
 454
 455 static int str_directory_cb(void *data, const char fio_unused *str)
 456 {
 457         struct thread_data *td = data;
 458         struct stat sb;
 459
 460         if (lstat(td->o.directory, &sb) < 0) {
 461                 int ret = errno;
 462
 463                 log_err("fio: %s is not a directory\n", td->o.directory);
 464                 td_verror(td, ret, "lstat");
 465                 return 1;
 466         }
 467         if (!S_ISDIR(sb.st_mode)) {
 468                 log_err("fio: %s is not a directory\n", td->o.directory);
 469                 return 1;
 470         }
 471
 472         return 0;
 473 }
 474
 475 static int str_opendir_cb(void *data, const char fio_unused *str)
 476 {
 477         struct thread_data *td = data;
 478
 479         if (!td->files_index)
 480                 td->o.nr_files = 0;
 481
 482         return add_dir_files(td, td->o.opendir);
 483 }
 484
 485 static int str_verify_offset_cb(void *data, unsigned int *off)
 486 {
 487         struct thread_data *td = data;
 488
 489         if (*off && *off < sizeof(struct verify_header)) {
 490                 log_err("fio: verify_offset too small\n");
 491                 return 1;
 492         }
 493
 494         td->o.verify_offset = *off;
 495         return 0;
 496 }
 497
 498 static int str_verify_pattern_cb(void *data, unsigned int *off)
 499 {
 500         struct thread_data *td = data;
 501         unsigned int msb;
 502
 503         msb = __fls(*off);
 504         if (msb <= 8)
 505                 td->o.verify_pattern_bytes = 1;
 506         else if (msb <= 16)
 507                 td->o.verify_pattern_bytes = 2;
 508         else if (msb <= 24)
 509                 td->o.verify_pattern_bytes = 3;
 510         else
 511                 td->o.verify_pattern_bytes = 4;
 512
 513         td->o.verify_pattern = *off;
 514         return 0;
 515 }
 516
 517 static int str_lockfile_cb(void *data, const char *str)
 518 {
 519         struct thread_data *td = data;
 520         char *nr = get_opt_postfix(str);
 521
 522         td->o.lockfile_batch = 1;
 523         if (nr) {
 524                 td->o.lockfile_batch = atoi(nr);
 525                 free(nr);
 526         }
 527
 528         return 0;
 529 }
 530
 531 static int str_write_bw_log_cb(void *data, const char *str)
 532 {
 533         struct thread_data *td = data;
 534
 535         if (str)
 536                 td->o.bw_log_file = strdup(str);
 537
 538         td->o.write_bw_log = 1;
 539         return 0;
 540 }
 541
 542 static int str_write_lat_log_cb(void *data, const char *str)
 543 {
 544         struct thread_data *td = data;
 545
 546         if (str)
 547                 td->o.lat_log_file = strdup(str);
 548
 549         td->o.write_lat_log = 1;
 550         return 0;
 551 }
 552
 553 static int str_gtod_reduce_cb(void *data, int *il)
 554 {
 555         struct thread_data *td = data;
 556         int val = *il;
 557
 558         td->o.disable_clat = !!val;
 559         td->o.disable_slat = !!val;
 560         td->o.disable_bw = !!val;
 561         if (val)
 562                 td->tv_cache_mask = 63;
 563
 564         return 0;
 565 }
 566
 567 static int str_gtod_cpu_cb(void *data, int *il)
 568 {
 569         struct thread_data *td = data;
 570         int val = *il;
 571
 572         td->o.gtod_cpu = val;
 573         td->o.gtod_offload = 1;
 574         return 0;
 575 }
 576
 577 #define __stringify_1(x)        #x
 578 #define __stringify(x)          __stringify_1(x)
 579
 580 /*
 581  * Map of job/command line options
 582  */
 583 static struct fio_option options[] = {
 584         {
 585                 .name   = "description",
 586                 .type   = FIO_OPT_STR_STORE,
 587                 .off1   = td_var_offset(description),
 588                 .help   = "Text job description",
 589         },
 590         {
 591                 .name   = "name",
 592                 .type   = FIO_OPT_STR_STORE,
 593                 .off1   = td_var_offset(name),
 594                 .help   = "Name of this job",
 595         },
 596         {
 597                 .name   = "directory",
 598                 .type   = FIO_OPT_STR_STORE,
 599                 .off1   = td_var_offset(directory),
 600                 .cb     = str_directory_cb,
 601                 .help   = "Directory to store files in",
 602         },
 603         {
 604                 .name   = "filename",
 605                 .type   = FIO_OPT_STR_STORE,
 606                 .off1   = td_var_offset(filename),
 607                 .cb     = str_filename_cb,
 608                 .prio   = 1, /* must come before "directory" */
 609                 .help   = "File(s) to use for the workload",
 610         },
 611         {
 612                 .name   = "lockfile",
 613                 .type   = FIO_OPT_STR,
 614                 .cb     = str_lockfile_cb,
 615                 .off1   = td_var_offset(file_lock_mode),
 616                 .help   = "Lock file when doing IO to it",
 617                 .parent = "filename",
 618                 .def    = "none",
 619                 .posval = {
 620                           { .ival = "none",
 621                             .oval = FILE_LOCK_NONE,
 622                             .help = "No file locking",
 623                           },
 624                           { .ival = "exclusive",
 625                             .oval = FILE_LOCK_EXCLUSIVE,
 626                             .help = "Exclusive file lock",
 627                           },
 628                           {
 629                             .ival = "readwrite",
 630                             .oval = FILE_LOCK_READWRITE,
 631                             .help = "Read vs write lock",
 632                           },
 633                 },
 634         },
 635         {
 636                 .name   = "opendir",
 637                 .type   = FIO_OPT_STR_STORE,
 638                 .off1   = td_var_offset(opendir),
 639                 .cb     = str_opendir_cb,
 640                 .help   = "Recursively add files from this directory and down",
 641         },
 642         {
 643                 .name   = "rw",
 644                 .alias  = "readwrite",
 645                 .type   = FIO_OPT_STR,
 646                 .cb     = str_rw_cb,
 647                 .off1   = td_var_offset(td_ddir),
 648                 .help   = "IO direction",
 649                 .def    = "read",
 650                 .posval = {
 651                           { .ival = "read",
 652                             .oval = TD_DDIR_READ,
 653                             .help = "Sequential read",
 654                           },
 655                           { .ival = "write",
 656                             .oval = TD_DDIR_WRITE,
 657                             .help = "Sequential write",
 658                           },
 659                           { .ival = "randread",
 660                             .oval = TD_DDIR_RANDREAD,
 661                             .help = "Random read",
 662                           },
 663                           { .ival = "randwrite",
 664                             .oval = TD_DDIR_RANDWRITE,
 665                             .help = "Random write",
 666                           },
 667                           { .ival = "rw",
 668                             .oval = TD_DDIR_RW,
 669                             .help = "Sequential read and write mix",
 670                           },
 671                           { .ival = "randrw",
 672                             .oval = TD_DDIR_RANDRW,
 673                             .help = "Random read and write mix"
 674                           },
 675                 },
 676         },
 677         {
 678                 .name   = "ioengine",
 679                 .type   = FIO_OPT_STR_STORE,
 680                 .off1   = td_var_offset(ioengine),
 681                 .help   = "IO engine to use",
 682                 .def    = "sync",
 683                 .posval = {
 684                           { .ival = "sync",
 685                             .help = "Use read/write",
 686                           },
 687                           { .ival = "psync",
 688                             .help = "Use pread/pwrite",
 689                           },
 690                           { .ival = "vsync",
 691                              .help = "Use readv/writev",
 692                           },
 693 #ifdef FIO_HAVE_LIBAIO
 694                           { .ival = "libaio",
 695                             .help = "Linux native asynchronous IO",
 696                           },
 697 #endif
 698 #ifdef FIO_HAVE_POSIXAIO
 699                           { .ival = "posixaio",
 700                             .help = "POSIX asynchronous IO",
 701                           },
 702 #endif
 703 #ifdef FIO_HAVE_SOLARISAIO
 704                           { .ival = "solarisaio",
 705                             .help = "Solaris native asynchronous IO",
 706                           },
 707 #endif
 708                           { .ival = "mmap",
 709                             .help = "Memory mapped IO",
 710                           },
 711 #ifdef FIO_HAVE_SPLICE
 712                           { .ival = "splice",
 713                             .help = "splice/vmsplice based IO",
 714                           },
 715                           { .ival = "netsplice",
 716                             .help = "splice/vmsplice to/from the network",
 717                           },
 718 #endif
 719 #ifdef FIO_HAVE_SGIO
 720                           { .ival = "sg",
 721                             .help = "SCSI generic v3 IO",
 722                           },
 723 #endif
 724                           { .ival = "null",
 725                             .help = "Testing engine (no data transfer)",
 726                           },
 727                           { .ival = "net",
 728                             .help = "Network IO",
 729                           },
 730 #ifdef FIO_HAVE_SYSLET
 731                           { .ival = "syslet-rw",
 732                             .help = "syslet enabled async pread/pwrite IO",
 733                           },
 734 #endif
 735                           { .ival = "cpuio",
 736                             .help = "CPU cycler burner engine",
 737                           },
 738 #ifdef FIO_HAVE_GUASI
 739                           { .ival = "guasi",
 740                             .help = "GUASI IO engine",
 741                           },
 742 #endif
 743                           { .ival = "external",
 744                             .help = "Load external engine (append name)",
 745                           },
 746                 },
 747         },
 748         {
 749                 .name   = "iodepth",
 750                 .type   = FIO_OPT_INT,
 751                 .off1   = td_var_offset(iodepth),
 752                 .help   = "Amount of IO buffers to keep in flight",
 753                 .minval = 1,
 754                 .def    = "1",
 755         },
 756         {
 757                 .name   = "iodepth_batch",
 758                 .alias  = "iodepth_batch_submit",
 759                 .type   = FIO_OPT_INT,
 760                 .off1   = td_var_offset(iodepth_batch),
 761                 .help   = "Number of IO buffers to submit in one go",
 762                 .parent = "iodepth",
 763                 .minval = 1,
 764                 .def    = "1",
 765         },
 766         {
 767                 .name   = "iodepth_batch_complete",
 768                 .type   = FIO_OPT_INT,
 769                 .off1   = td_var_offset(iodepth_batch_complete),
 770                 .help   = "Number of IO buffers to retrieve in one go",
 771                 .parent = "iodepth",
 772                 .minval = 0,
 773                 .def    = "1",
 774         },
 775         {
 776                 .name   = "iodepth_low",
 777                 .type   = FIO_OPT_INT,
 778                 .off1   = td_var_offset(iodepth_low),
 779                 .help   = "Low water mark for queuing depth",
 780                 .parent = "iodepth",
 781         },
 782         {
 783                 .name   = "size",
 784                 .type   = FIO_OPT_STR_VAL,
 785                 .off1   = td_var_offset(size),
 786                 .minval = 1,
 787                 .help   = "Total size of device or files",
 788         },
 789         {
 790                 .name   = "fill_device",
 791                 .type   = FIO_OPT_BOOL,
 792                 .off1   = td_var_offset(fill_device),
 793                 .help   = "Write until an ENOSPC error occurs",
 794                 .def    = "0",
 795         },
 796         {
 797                 .name   = "filesize",
 798                 .type   = FIO_OPT_STR_VAL,
 799                 .off1   = td_var_offset(file_size_low),
 800                 .off2   = td_var_offset(file_size_high),
 801                 .minval = 1,
 802                 .help   = "Size of individual files",
 803         },
 804         {
 805                 .name   = "offset",
 806                 .alias  = "fileoffset",
 807                 .type   = FIO_OPT_STR_VAL,
 808                 .off1   = td_var_offset(start_offset),
 809                 .help   = "Start IO from this offset",
 810                 .def    = "0",
 811         },
 812         {
 813                 .name   = "bs",
 814                 .alias  = "blocksize",
 815                 .type   = FIO_OPT_STR_VAL_INT,
 816                 .off1   = td_var_offset(bs[DDIR_READ]),
 817                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 818                 .minval = 1,
 819                 .help   = "Block size unit",
 820                 .def    = "4k",
 821                 .parent = "rw",
 822         },
 823         {
 824                 .name   = "ba",
 825                 .alias  = "blockalign",
 826                 .type   = FIO_OPT_STR_VAL_INT,
 827                 .off1   = td_var_offset(ba[DDIR_READ]),
 828                 .off2   = td_var_offset(ba[DDIR_WRITE]),
 829                 .minval = 1,
 830                 .help   = "IO block offset alignment",
 831                 .parent = "rw",
 832         },
 833         {
 834                 .name   = "bsrange",
 835                 .alias  = "blocksize_range",
 836                 .type   = FIO_OPT_RANGE,
 837                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 838                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 839                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 840                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 841                 .minval = 1,
 842                 .help   = "Set block size range (in more detail than bs)",
 843                 .parent = "rw",
 844         },
 845         {
 846                 .name   = "bssplit",
 847                 .type   = FIO_OPT_STR,
 848                 .cb     = str_bssplit_cb,
 849                 .help   = "Set a specific mix of block sizes",
 850                 .parent = "rw",
 851         },
 852         {
 853                 .name   = "bs_unaligned",
 854                 .alias  = "blocksize_unaligned",
 855                 .type   = FIO_OPT_STR_SET,
 856                 .off1   = td_var_offset(bs_unaligned),
 857                 .help   = "Don't sector align IO buffer sizes",
 858                 .parent = "rw",
 859         },
 860         {
 861                 .name   = "randrepeat",
 862                 .type   = FIO_OPT_BOOL,
 863                 .off1   = td_var_offset(rand_repeatable),
 864                 .help   = "Use repeatable random IO pattern",
 865                 .def    = "1",
 866                 .parent = "rw",
 867         },
 868         {
 869                 .name   = "norandommap",
 870                 .type   = FIO_OPT_STR_SET,
 871                 .off1   = td_var_offset(norandommap),
 872                 .help   = "Accept potential duplicate random blocks",
 873                 .parent = "rw",
 874         },
 875         {
 876                 .name   = "softrandommap",
 877                 .type   = FIO_OPT_BOOL,
 878                 .off1   = td_var_offset(softrandommap),
 879                 .help   = "Set norandommap if randommap allocation fails",
 880                 .parent = "norandommap",
 881                 .def    = "0",
 882         },
 883         {
 884                 .name   = "nrfiles",
 885                 .type   = FIO_OPT_INT,
 886                 .off1   = td_var_offset(nr_files),
 887                 .help   = "Split job workload between this number of files",
 888                 .def    = "1",
 889         },
 890         {
 891                 .name   = "openfiles",
 892                 .type   = FIO_OPT_INT,
 893                 .off1   = td_var_offset(open_files),
 894                 .help   = "Number of files to keep open at the same time",
 895         },
 896         {
 897                 .name   = "file_service_type",
 898                 .type   = FIO_OPT_STR,
 899                 .cb     = str_fst_cb,
 900                 .off1   = td_var_offset(file_service_type),
 901                 .help   = "How to select which file to service next",
 902                 .def    = "roundrobin",
 903                 .posval = {
 904                           { .ival = "random",
 905                             .oval = FIO_FSERVICE_RANDOM,
 906                             .help = "Choose a file at random",
 907                           },
 908                           { .ival = "roundrobin",
 909                             .oval = FIO_FSERVICE_RR,
 910                             .help = "Round robin select files",
 911                           },
 912                           { .ival = "sequential",
 913                             .oval = FIO_FSERVICE_SEQ,
 914                             .help = "Finish one file before moving to the next",
 915                           },
 916                 },
 917                 .parent = "nrfiles",
 918         },
 919         {
 920                 .name   = "fadvise_hint",
 921                 .type   = FIO_OPT_BOOL,
 922                 .off1   = td_var_offset(fadvise_hint),
 923                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 924                 .def    = "1",
 925         },
 926         {
 927                 .name   = "fsync",
 928                 .type   = FIO_OPT_INT,
 929                 .off1   = td_var_offset(fsync_blocks),
 930                 .help   = "Issue fsync for writes every given number of blocks",
 931                 .def    = "0",
 932         },
 933         {
 934                 .name   = "direct",
 935                 .type   = FIO_OPT_BOOL,
 936                 .off1   = td_var_offset(odirect),
 937                 .help   = "Use O_DIRECT IO (negates buffered)",
 938                 .def    = "0",
 939         },
 940         {
 941                 .name   = "buffered",
 942                 .type   = FIO_OPT_BOOL,
 943                 .off1   = td_var_offset(odirect),
 944                 .neg    = 1,
 945                 .help   = "Use buffered IO (negates direct)",
 946                 .def    = "1",
 947         },
 948         {
 949                 .name   = "overwrite",
 950                 .type   = FIO_OPT_BOOL,
 951                 .off1   = td_var_offset(overwrite),
 952                 .help   = "When writing, set whether to overwrite current data",
 953                 .def    = "0",
 954         },
 955         {
 956                 .name   = "loops",
 957                 .type   = FIO_OPT_INT,
 958                 .off1   = td_var_offset(loops),
 959                 .help   = "Number of times to run the job",
 960                 .def    = "1",
 961         },
 962         {
 963                 .name   = "numjobs",
 964                 .type   = FIO_OPT_INT,
 965                 .off1   = td_var_offset(numjobs),
 966                 .help   = "Duplicate this job this many times",
 967                 .def    = "1",
 968         },
 969         {
 970                 .name   = "startdelay",
 971                 .type   = FIO_OPT_INT,
 972                 .off1   = td_var_offset(start_delay),
 973                 .help   = "Only start job when this period has passed",
 974                 .def    = "0",
 975         },
 976         {
 977                 .name   = "runtime",
 978                 .alias  = "timeout",
 979                 .type   = FIO_OPT_STR_VAL_TIME,
 980                 .off1   = td_var_offset(timeout),
 981                 .help   = "Stop workload when this amount of time has passed",
 982                 .def    = "0",
 983         },
 984         {
 985                 .name   = "time_based",
 986                 .type   = FIO_OPT_STR_SET,
 987                 .off1   = td_var_offset(time_based),
 988                 .help   = "Keep running until runtime/timeout is met",
 989         },
 990         {
 991                 .name   = "ramp_time",
 992                 .type   = FIO_OPT_STR_VAL_TIME,
 993                 .off1   = td_var_offset(ramp_time),
 994                 .help   = "Ramp up time before measuring performance",
 995         },
 996         {
 997                 .name   = "mem",
 998                 .alias  = "iomem",
 999                 .type   = FIO_OPT_STR,
1000                 .cb     = str_mem_cb,
1001                 .off1   = td_var_offset(mem_type),
1002                 .help   = "Backing type for IO buffers",
1003                 .def    = "malloc",
1004                 .posval = {
1005                           { .ival = "malloc",
1006                             .oval = MEM_MALLOC,
1007                             .help = "Use malloc(3) for IO buffers",
1008                           },
1009                           { .ival = "shm",
1010                             .oval = MEM_SHM,
1011                             .help = "Use shared memory segments for IO buffers",
1012                           },
1013 #ifdef FIO_HAVE_HUGETLB
1014                           { .ival = "shmhuge",
1015                             .oval = MEM_SHMHUGE,
1016                             .help = "Like shm, but use huge pages",
1017                           },
1018 #endif
1019                           { .ival = "mmap",
1020                             .oval = MEM_MMAP,
1021                             .help = "Use mmap(2) (file or anon) for IO buffers",
1022                           },
1023 #ifdef FIO_HAVE_HUGETLB
1024                           { .ival = "mmaphuge",
1025                             .oval = MEM_MMAPHUGE,
1026                             .help = "Like mmap, but use huge pages",
1027                           },
1028 #endif
1029                   },
1030         },
1031         {
1032                 .name   = "verify",
1033                 .type   = FIO_OPT_STR,
1034                 .off1   = td_var_offset(verify),
1035                 .help   = "Verify data written",
1036                 .def    = "0",
1037                 .posval = {
1038                           { .ival = "0",
1039                             .oval = VERIFY_NONE,
1040                             .help = "Don't do IO verification",
1041                           },
1042                           { .ival = "md5",
1043                             .oval = VERIFY_MD5,
1044                             .help = "Use md5 checksums for verification",
1045                           },
1046                           { .ival = "crc64",
1047                             .oval = VERIFY_CRC64,
1048                             .help = "Use crc64 checksums for verification",
1049                           },
1050                           { .ival = "crc32",
1051                             .oval = VERIFY_CRC32,
1052                             .help = "Use crc32 checksums for verification",
1053                           },
1054                           { .ival = "crc32c-intel",
1055                             .oval = VERIFY_CRC32C_INTEL,
1056                             .help = "Use hw crc32c checksums for verification",
1057                           },
1058                           { .ival = "crc32c",
1059                             .oval = VERIFY_CRC32C,
1060                             .help = "Use crc32c checksums for verification",
1061                           },
1062                           { .ival = "crc16",
1063                             .oval = VERIFY_CRC16,
1064                             .help = "Use crc16 checksums for verification",
1065                           },
1066                           { .ival = "crc7",
1067                             .oval = VERIFY_CRC7,
1068                             .help = "Use crc7 checksums for verification",
1069                           },
1070                           { .ival = "sha256",
1071                             .oval = VERIFY_SHA256,
1072                             .help = "Use sha256 checksums for verification",
1073                           },
1074                           { .ival = "sha512",
1075                             .oval = VERIFY_SHA512,
1076                             .help = "Use sha512 checksums for verification",
1077                           },
1078                           { .ival = "meta",
1079                             .oval = VERIFY_META,
1080                             .help = "Use io information",
1081                           },
1082                           {
1083                             .ival = "null",
1084                             .oval = VERIFY_NULL,
1085                             .help = "Pretend to verify",
1086                           },
1087                 },
1088         },
1089         {
1090                 .name   = "do_verify",
1091                 .type   = FIO_OPT_BOOL,
1092                 .off1   = td_var_offset(do_verify),
1093                 .help   = "Run verification stage after write",
1094                 .def    = "1",
1095                 .parent = "verify",
1096         },
1097         {
1098                 .name   = "verifysort",
1099                 .type   = FIO_OPT_BOOL,
1100                 .off1   = td_var_offset(verifysort),
1101                 .help   = "Sort written verify blocks for read back",
1102                 .def    = "1",
1103                 .parent = "verify",
1104         },
1105         {
1106                 .name   = "verify_interval",
1107                 .type   = FIO_OPT_STR_VAL_INT,
1108                 .off1   = td_var_offset(verify_interval),
1109                 .minval = 2 * sizeof(struct verify_header),
1110                 .help   = "Store verify buffer header every N bytes",
1111                 .parent = "verify",
1112         },
1113         {
1114                 .name   = "verify_offset",
1115                 .type   = FIO_OPT_STR_VAL_INT,
1116                 .help   = "Offset verify header location by N bytes",
1117                 .def    = "0",
1118                 .cb     = str_verify_offset_cb,
1119                 .parent = "verify",
1120         },
1121         {
1122                 .name   = "verify_pattern",
1123                 .type   = FIO_OPT_INT,
1124                 .cb     = str_verify_pattern_cb,
1125                 .help   = "Fill pattern for IO buffers",
1126                 .parent = "verify",
1127         },
1128         {
1129                 .name   = "verify_fatal",
1130                 .type   = FIO_OPT_BOOL,
1131                 .off1   = td_var_offset(verify_fatal),
1132                 .def    = "0",
1133                 .help   = "Exit on a single verify failure, don't continue",
1134                 .parent = "verify",
1135         },
1136         {
1137                 .name   = "write_iolog",
1138                 .type   = FIO_OPT_STR_STORE,
1139                 .off1   = td_var_offset(write_iolog_file),
1140                 .help   = "Store IO pattern to file",
1141         },
1142         {
1143                 .name   = "read_iolog",
1144                 .type   = FIO_OPT_STR_STORE,
1145                 .off1   = td_var_offset(read_iolog_file),
1146                 .help   = "Playback IO pattern from file",
1147         },
1148         {
1149                 .name   = "exec_prerun",
1150                 .type   = FIO_OPT_STR_STORE,
1151                 .off1   = td_var_offset(exec_prerun),
1152                 .help   = "Execute this file prior to running job",
1153         },
1154         {
1155                 .name   = "exec_postrun",
1156                 .type   = FIO_OPT_STR_STORE,
1157                 .off1   = td_var_offset(exec_postrun),
1158                 .help   = "Execute this file after running job",
1159         },
1160 #ifdef FIO_HAVE_IOSCHED_SWITCH
1161         {
1162                 .name   = "ioscheduler",
1163                 .type   = FIO_OPT_STR_STORE,
1164                 .off1   = td_var_offset(ioscheduler),
1165                 .help   = "Use this IO scheduler on the backing device",
1166         },
1167 #endif
1168         {
1169                 .name   = "zonesize",
1170                 .type   = FIO_OPT_STR_VAL,
1171                 .off1   = td_var_offset(zone_size),
1172                 .help   = "Give size of an IO zone",
1173                 .def    = "0",
1174         },
1175         {
1176                 .name   = "zoneskip",
1177                 .type   = FIO_OPT_STR_VAL,
1178                 .off1   = td_var_offset(zone_skip),
1179                 .help   = "Space between IO zones",
1180                 .def    = "0",
1181         },
1182         {
1183                 .name   = "lockmem",
1184                 .type   = FIO_OPT_STR_VAL,
1185                 .cb     = str_lockmem_cb,
1186                 .help   = "Lock down this amount of memory",
1187                 .def    = "0",
1188         },
1189         {
1190                 .name   = "rwmixread",
1191                 .type   = FIO_OPT_INT,
1192                 .cb     = str_rwmix_read_cb,
1193                 .maxval = 100,
1194                 .help   = "Percentage of mixed workload that is reads",
1195                 .def    = "50",
1196         },
1197         {
1198                 .name   = "rwmixwrite",
1199                 .type   = FIO_OPT_INT,
1200                 .cb     = str_rwmix_write_cb,
1201                 .maxval = 100,
1202                 .help   = "Percentage of mixed workload that is writes",
1203                 .def    = "50",
1204         },
1205         {
1206                 .name   = "rwmixcycle",
1207                 .type   = FIO_OPT_DEPRECATED,
1208         },
1209         {
1210                 .name   = "nice",
1211                 .type   = FIO_OPT_INT,
1212                 .off1   = td_var_offset(nice),
1213                 .help   = "Set job CPU nice value",
1214                 .minval = -19,
1215                 .maxval = 20,
1216                 .def    = "0",
1217         },
1218 #ifdef FIO_HAVE_IOPRIO
1219         {
1220                 .name   = "prio",
1221                 .type   = FIO_OPT_INT,
1222                 .cb     = str_prio_cb,
1223                 .help   = "Set job IO priority value",
1224                 .minval = 0,
1225                 .maxval = 7,
1226         },
1227         {
1228                 .name   = "prioclass",
1229                 .type   = FIO_OPT_INT,
1230                 .cb     = str_prioclass_cb,
1231                 .help   = "Set job IO priority class",
1232                 .minval = 0,
1233                 .maxval = 3,
1234         },
1235 #endif
1236         {
1237                 .name   = "thinktime",
1238                 .type   = FIO_OPT_INT,
1239                 .off1   = td_var_offset(thinktime),
1240                 .help   = "Idle time between IO buffers (usec)",
1241                 .def    = "0",
1242         },
1243         {
1244                 .name   = "thinktime_spin",
1245                 .type   = FIO_OPT_INT,
1246                 .off1   = td_var_offset(thinktime_spin),
1247                 .help   = "Start think time by spinning this amount (usec)",
1248                 .def    = "0",
1249                 .parent = "thinktime",
1250         },
1251         {
1252                 .name   = "thinktime_blocks",
1253                 .type   = FIO_OPT_INT,
1254                 .off1   = td_var_offset(thinktime_blocks),
1255                 .help   = "IO buffer period between 'thinktime'",
1256                 .def    = "1",
1257                 .parent = "thinktime",
1258         },
1259         {
1260                 .name   = "rate",
1261                 .type   = FIO_OPT_INT,
1262                 .off1   = td_var_offset(rate),
1263                 .help   = "Set bandwidth rate",
1264         },
1265         {
1266                 .name   = "ratemin",
1267                 .type   = FIO_OPT_INT,
1268                 .off1   = td_var_offset(ratemin),
1269                 .help   = "Job must meet this rate or it will be shutdown",
1270                 .parent = "rate",
1271         },
1272         {
1273                 .name   = "rate_iops",
1274                 .type   = FIO_OPT_INT,
1275                 .off1   = td_var_offset(rate_iops),
1276                 .help   = "Limit IO used to this number of IO operations/sec",
1277         },
1278         {
1279                 .name   = "rate_iops_min",
1280                 .type   = FIO_OPT_INT,
1281                 .off1   = td_var_offset(rate_iops_min),
1282                 .help   = "Job must meet this rate or it will be shutdown",
1283                 .parent = "rate_iops",
1284         },
1285         {
1286                 .name   = "ratecycle",
1287                 .type   = FIO_OPT_INT,
1288                 .off1   = td_var_offset(ratecycle),
1289                 .help   = "Window average for rate limits (msec)",
1290                 .def    = "1000",
1291                 .parent = "rate",
1292         },
1293         {
1294                 .name   = "invalidate",
1295                 .type   = FIO_OPT_BOOL,
1296                 .off1   = td_var_offset(invalidate_cache),
1297                 .help   = "Invalidate buffer/page cache prior to running job",
1298                 .def    = "1",
1299         },
1300         {
1301                 .name   = "sync",
1302                 .type   = FIO_OPT_BOOL,
1303                 .off1   = td_var_offset(sync_io),
1304                 .help   = "Use O_SYNC for buffered writes",
1305                 .def    = "0",
1306                 .parent = "buffered",
1307         },
1308         {
1309                 .name   = "bwavgtime",
1310                 .type   = FIO_OPT_INT,
1311                 .off1   = td_var_offset(bw_avg_time),
1312                 .help   = "Time window over which to calculate bandwidth"
1313                           " (msec)",
1314                 .def    = "500",
1315         },
1316         {
1317                 .name   = "create_serialize",
1318                 .type   = FIO_OPT_BOOL,
1319                 .off1   = td_var_offset(create_serialize),
1320                 .help   = "Serialize creating of job files",
1321                 .def    = "1",
1322         },
1323         {
1324                 .name   = "create_fsync",
1325                 .type   = FIO_OPT_BOOL,
1326                 .off1   = td_var_offset(create_fsync),
1327                 .help   = "Fsync file after creation",
1328                 .def    = "1",
1329         },
1330         {
1331                 .name   = "create_on_open",
1332                 .type   = FIO_OPT_BOOL,
1333                 .off1   = td_var_offset(create_on_open),
1334                 .help   = "Create files when they are opened for IO",
1335                 .def    = "0",
1336         },
1337         {
1338                 .name   = "cpuload",
1339                 .type   = FIO_OPT_INT,
1340                 .off1   = td_var_offset(cpuload),
1341                 .help   = "Use this percentage of CPU",
1342         },
1343         {
1344                 .name   = "cpuchunks",
1345                 .type   = FIO_OPT_INT,
1346                 .off1   = td_var_offset(cpucycle),
1347                 .help   = "Length of the CPU burn cycles (usecs)",
1348                 .def    = "50000",
1349                 .parent = "cpuload",
1350         },
1351 #ifdef FIO_HAVE_CPU_AFFINITY
1352         {
1353                 .name   = "cpumask",
1354                 .type   = FIO_OPT_INT,
1355                 .cb     = str_cpumask_cb,
1356                 .help   = "CPU affinity mask",
1357         },
1358         {
1359                 .name   = "cpus_allowed",
1360                 .type   = FIO_OPT_STR,
1361                 .cb     = str_cpus_allowed_cb,
1362                 .help   = "Set CPUs allowed",
1363         },
1364 #endif
1365         {
1366                 .name   = "end_fsync",
1367                 .type   = FIO_OPT_BOOL,
1368                 .off1   = td_var_offset(end_fsync),
1369                 .help   = "Include fsync at the end of job",
1370                 .def    = "0",
1371         },
1372         {
1373                 .name   = "fsync_on_close",
1374                 .type   = FIO_OPT_BOOL,
1375                 .off1   = td_var_offset(fsync_on_close),
1376                 .help   = "fsync files on close",
1377                 .def    = "0",
1378         },
1379         {
1380                 .name   = "unlink",
1381                 .type   = FIO_OPT_BOOL,
1382                 .off1   = td_var_offset(unlink),
1383                 .help   = "Unlink created files after job has completed",
1384                 .def    = "0",
1385         },
1386         {
1387                 .name   = "exitall",
1388                 .type   = FIO_OPT_STR_SET,
1389                 .cb     = str_exitall_cb,
1390                 .help   = "Terminate all jobs when one exits",
1391         },
1392         {
1393                 .name   = "stonewall",
1394                 .type   = FIO_OPT_STR_SET,
1395                 .off1   = td_var_offset(stonewall),
1396                 .help   = "Insert a hard barrier between this job and previous",
1397         },
1398         {
1399                 .name   = "new_group",
1400                 .type   = FIO_OPT_STR_SET,
1401                 .off1   = td_var_offset(new_group),
1402                 .help   = "Mark the start of a new group (for reporting)",
1403         },
1404         {
1405                 .name   = "thread",
1406                 .type   = FIO_OPT_STR_SET,
1407                 .off1   = td_var_offset(use_thread),
1408                 .help   = "Use threads instead of forks",
1409         },
1410         {
1411                 .name   = "write_bw_log",
1412                 .type   = FIO_OPT_STR,
1413                 .off1   = td_var_offset(write_bw_log),
1414                 .cb     = str_write_bw_log_cb,
1415                 .help   = "Write log of bandwidth during run",
1416         },
1417         {
1418                 .name   = "write_lat_log",
1419                 .type   = FIO_OPT_STR,
1420                 .off1   = td_var_offset(write_lat_log),
1421                 .cb     = str_write_lat_log_cb,
1422                 .help   = "Write log of latency during run",
1423         },
1424         {
1425                 .name   = "hugepage-size",
1426                 .type   = FIO_OPT_STR_VAL_INT,
1427                 .off1   = td_var_offset(hugepage_size),
1428                 .help   = "When using hugepages, specify size of each page",
1429                 .def    = __stringify(FIO_HUGE_PAGE),
1430         },
1431         {
1432                 .name   = "group_reporting",
1433                 .type   = FIO_OPT_STR_SET,
1434                 .off1   = td_var_offset(group_reporting),
1435                 .help   = "Do reporting on a per-group basis",
1436         },
1437         {
1438                 .name   = "zero_buffers",
1439                 .type   = FIO_OPT_STR_SET,
1440                 .off1   = td_var_offset(zero_buffers),
1441                 .help   = "Init IO buffers to all zeroes",
1442         },
1443         {
1444                 .name   = "refill_buffers",
1445                 .type   = FIO_OPT_STR_SET,
1446                 .off1   = td_var_offset(refill_buffers),
1447                 .help   = "Refill IO buffers on every IO submit",
1448         },
1449 #ifdef FIO_HAVE_DISK_UTIL
1450         {
1451                 .name   = "disk_util",
1452                 .type   = FIO_OPT_BOOL,
1453                 .off1   = td_var_offset(do_disk_util),
1454                 .help   = "Log disk utilization statistics",
1455                 .def    = "1",
1456         },
1457 #endif
1458         {
1459                 .name   = "gtod_reduce",
1460                 .type   = FIO_OPT_BOOL,
1461                 .help   = "Greatly reduce number of gettimeofday() calls",
1462                 .cb     = str_gtod_reduce_cb,
1463                 .def    = "0",
1464         },
1465         {
1466                 .name   = "disable_clat",
1467                 .type   = FIO_OPT_BOOL,
1468                 .off1   = td_var_offset(disable_clat),
1469                 .help   = "Disable completion latency numbers",
1470                 .parent = "gtod_reduce",
1471                 .def    = "0",
1472         },
1473         {
1474                 .name   = "disable_slat",
1475                 .type   = FIO_OPT_BOOL,
1476                 .off1   = td_var_offset(disable_slat),
1477                 .help   = "Disable submissionn latency numbers",
1478                 .parent = "gtod_reduce",
1479                 .def    = "0",
1480         },
1481         {
1482                 .name   = "disable_bw_measurement",
1483                 .type   = FIO_OPT_BOOL,
1484                 .off1   = td_var_offset(disable_bw),
1485                 .help   = "Disable bandwidth logging",
1486                 .parent = "gtod_reduce",
1487                 .def    = "0",
1488         },
1489         {
1490                 .name   = "gtod_cpu",
1491                 .type   = FIO_OPT_INT,
1492                 .cb     = str_gtod_cpu_cb,
1493                 .help   = "Setup dedicated gettimeofday() thread on this CPU",
1494         },
1495         {
1496                 .name = NULL,
1497         },
1498 };
1499
1500 void fio_options_dup_and_init(struct option *long_options)
1501 {
1502         struct fio_option *o;
1503         unsigned int i;
1504
1505         options_init(options);
1506
1507         i = 0;
1508         while (long_options[i].name)
1509                 i++;
1510
1511         o = &options[0];
1512         while (o->name) {
1513                 long_options[i].name = (char *) o->name;
1514                 long_options[i].val = FIO_GETOPT_JOB;
1515                 if (o->type == FIO_OPT_STR_SET)
1516                         long_options[i].has_arg = no_argument;
1517                 else
1518                         long_options[i].has_arg = required_argument;
1519
1520                 i++;
1521                 o++;
1522                 assert(i < FIO_NR_OPTIONS);
1523         }
1524 }
1525
1526 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
1527 {
1528         int i, ret;
1529
1530         sort_options(opts, options, num_opts);
1531
1532         for (ret = 0, i = 0; i < num_opts; i++)
1533                 ret |= parse_option(opts[i], options, td);
1534
1535         return ret;
1536 }
1537
1538 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1539 {
1540         return parse_cmd_option(opt, val, options, td);
1541 }
1542
1543 void fio_fill_default_options(struct thread_data *td)
1544 {
1545         fill_default_options(td, options);
1546 }
1547
1548 int fio_show_option_help(const char *opt)
1549 {
1550         return show_cmd_help(options, opt);
1551 }
1552
1553 static void __options_mem(struct thread_data *td, int alloc)
1554 {
1555         struct thread_options *o = &td->o;
1556         struct fio_option *opt;
1557         char **ptr;
1558         int i;
1559
1560         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1561                 if (opt->type != FIO_OPT_STR_STORE)
1562                         continue;
1563
1564                 ptr = (void *) o + opt->off1;
1565                 if (*ptr) {
1566                         if (alloc)
1567                                 *ptr = strdup(*ptr);
1568                         else {
1569                                 free(*ptr);
1570                                 *ptr = NULL;
1571                         }
1572                 }
1573         }
1574 }
1575
1576 /*
1577  * dupe FIO_OPT_STR_STORE options
1578  */
1579 void options_mem_dupe(struct thread_data *td)
1580 {
1581         __options_mem(td, 1);
1582 }
1583
1584 void options_mem_free(struct thread_data fio_unused *td)
1585 {
1586 #if 0
1587         __options_mem(td, 0);
1588 #endif
1589 }