options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <assert.h>
   7 #include <libgen.h>
   8 #include <fcntl.h>
   9 #include <sys/types.h>
  10 #include <sys/stat.h>
  11
  12 #include "fio.h"
  13 #include "verify.h"
  14 #include "parse.h"
  15 #include "lib/fls.h"
  16 #include "options.h"
  17
  18 #include "crc/crc32c.h"
  19
  20 /*
  21  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  22  */
  23 static char *get_opt_postfix(const char *str)
  24 {
  25         char *p = strstr(str, ":");
  26
  27         if (!p)
  28                 return NULL;
  29
  30         p++;
  31         strip_blank_front(&p);
  32         strip_blank_end(p);
  33         return strdup(p);
  34 }
  35
  36 static int converthexchartoint(char a)
  37 {
  38         int base;
  39
  40         switch(a) {
  41         case '0'...'9':
  42                 base = '0';
  43                 break;
  44         case 'A'...'F':
  45                 base = 'A' - 10;
  46                 break;
  47         case 'a'...'f':
  48                 base = 'a' - 10;
  49                 break;
  50         default:
  51                 base = 0;
  52         }
  53         return (a - base);
  54 }
  55
  56 static int bs_cmp(const void *p1, const void *p2)
  57 {
  58         const struct bssplit *bsp1 = p1;
  59         const struct bssplit *bsp2 = p2;
  60
  61         return bsp1->perc < bsp2->perc;
  62 }
  63
  64 static int bssplit_ddir(struct thread_data *td, int ddir, char *str)
  65 {
  66         struct bssplit *bssplit;
  67         unsigned int i, perc, perc_missing;
  68         unsigned int max_bs, min_bs;
  69         long long val;
  70         char *fname;
  71
  72         td->o.bssplit_nr[ddir] = 4;
  73         bssplit = malloc(4 * sizeof(struct bssplit));
  74
  75         i = 0;
  76         max_bs = 0;
  77         min_bs = -1;
  78         while ((fname = strsep(&str, ":")) != NULL) {
  79                 char *perc_str;
  80
  81                 if (!strlen(fname))
  82                         break;
  83
  84                 /*
  85                  * grow struct buffer, if needed
  86                  */
  87                 if (i == td->o.bssplit_nr[ddir]) {
  88                         td->o.bssplit_nr[ddir] <<= 1;
  89                         bssplit = realloc(bssplit, td->o.bssplit_nr[ddir]
  90                                                   * sizeof(struct bssplit));
  91                 }
  92
  93                 perc_str = strstr(fname, "/");
  94                 if (perc_str) {
  95                         *perc_str = '\0';
  96                         perc_str++;
  97                         perc = atoi(perc_str);
  98                         if (perc > 100)
  99                                 perc = 100;
 100                         else if (!perc)
 101                                 perc = -1;
 102                 } else
 103                         perc = -1;
 104
 105                 if (str_to_decimal(fname, &val, 1, td)) {
 106                         log_err("fio: bssplit conversion failed\n");
 107                         free(td->o.bssplit);
 108                         return 1;
 109                 }
 110
 111                 if (val > max_bs)
 112                         max_bs = val;
 113                 if (val < min_bs)
 114                         min_bs = val;
 115
 116                 bssplit[i].bs = val;
 117                 bssplit[i].perc = perc;
 118                 i++;
 119         }
 120
 121         td->o.bssplit_nr[ddir] = i;
 122
 123         /*
 124          * Now check if the percentages add up, and how much is missing
 125          */
 126         perc = perc_missing = 0;
 127         for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 128                 struct bssplit *bsp = &bssplit[i];
 129
 130                 if (bsp->perc == (unsigned char) -1)
 131                         perc_missing++;
 132                 else
 133                         perc += bsp->perc;
 134         }
 135
 136         if (perc > 100) {
 137                 log_err("fio: bssplit percentages add to more than 100%%\n");
 138                 free(bssplit);
 139                 return 1;
 140         }
 141         /*
 142          * If values didn't have a percentage set, divide the remains between
 143          * them.
 144          */
 145         if (perc_missing) {
 146                 for (i = 0; i < td->o.bssplit_nr[ddir]; i++) {
 147                         struct bssplit *bsp = &bssplit[i];
 148
 149                         if (bsp->perc == (unsigned char) -1)
 150                                 bsp->perc = (100 - perc) / perc_missing;
 151                 }
 152         }
 153
 154         td->o.min_bs[ddir] = min_bs;
 155         td->o.max_bs[ddir] = max_bs;
 156
 157         /*
 158          * now sort based on percentages, for ease of lookup
 159          */
 160         qsort(bssplit, td->o.bssplit_nr[ddir], sizeof(struct bssplit), bs_cmp);
 161         td->o.bssplit[ddir] = bssplit;
 162         return 0;
 163
 164 }
 165
 166 static int str_bssplit_cb(void *data, const char *input)
 167 {
 168         struct thread_data *td = data;
 169         char *str, *p, *odir;
 170         int ret = 0;
 171
 172         p = str = strdup(input);
 173
 174         strip_blank_front(&str);
 175         strip_blank_end(str);
 176
 177         odir = strchr(str, ',');
 178         if (odir) {
 179                 ret = bssplit_ddir(td, DDIR_WRITE, odir + 1);
 180                 if (!ret) {
 181                         *odir = '\0';
 182                         ret = bssplit_ddir(td, DDIR_READ, str);
 183                 }
 184         } else {
 185                 char *op;
 186
 187                 op = strdup(str);
 188
 189                 ret = bssplit_ddir(td, DDIR_READ, str);
 190                 if (!ret)
 191                         ret = bssplit_ddir(td, DDIR_WRITE, op);
 192
 193                 free(op);
 194         }
 195
 196         free(p);
 197         return ret;
 198 }
 199
 200 static int str_rw_cb(void *data, const char *str)
 201 {
 202         struct thread_data *td = data;
 203         char *nr = get_opt_postfix(str);
 204
 205         td->o.ddir_seq_nr = 1;
 206         if (nr) {
 207                 td->o.ddir_seq_nr = atoi(nr);
 208                 free(nr);
 209         }
 210
 211         return 0;
 212 }
 213
 214 static int str_mem_cb(void *data, const char *mem)
 215 {
 216         struct thread_data *td = data;
 217
 218         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
 219                 td->mmapfile = get_opt_postfix(mem);
 220                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
 221                         log_err("fio: mmaphuge:/path/to/file\n");
 222                         return 1;
 223                 }
 224         }
 225
 226         return 0;
 227 }
 228
 229 static int str_verify_cb(void *data, const char *mem)
 230 {
 231         struct thread_data *td = data;
 232
 233         if (td->o.verify != VERIFY_CRC32C_INTEL)
 234                 return 0;
 235
 236         if (!crc32c_intel_works()) {
 237                 log_info("fio: System does not support hw accelerated crc32c. Falling back to sw crc32c.\n");
 238                 td->o.verify = VERIFY_CRC32C;
 239         }
 240
 241         return 0;
 242 }
 243
 244 static int fio_clock_source_cb(void *data, const char *str)
 245 {
 246         struct thread_data *td = data;
 247
 248         fio_clock_source = td->o.clocksource;
 249         fio_time_init();
 250         return 0;
 251 }
 252
 253 static int str_lockmem_cb(void fio_unused *data, unsigned long long *val)
 254 {
 255         mlock_size = *val;
 256         return 0;
 257 }
 258
 259 static int str_rwmix_read_cb(void *data, unsigned long long *val)
 260 {
 261         struct thread_data *td = data;
 262
 263         td->o.rwmix[DDIR_READ] = *val;
 264         td->o.rwmix[DDIR_WRITE] = 100 - *val;
 265         return 0;
 266 }
 267
 268 static int str_rwmix_write_cb(void *data, unsigned long long *val)
 269 {
 270         struct thread_data *td = data;
 271
 272         td->o.rwmix[DDIR_WRITE] = *val;
 273         td->o.rwmix[DDIR_READ] = 100 - *val;
 274         return 0;
 275 }
 276
 277 #ifdef FIO_HAVE_IOPRIO
 278 static int str_prioclass_cb(void *data, unsigned long long *val)
 279 {
 280         struct thread_data *td = data;
 281         unsigned short mask;
 282
 283         /*
 284          * mask off old class bits, str_prio_cb() may have set a default class
 285          */
 286         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
 287         td->ioprio &= mask;
 288
 289         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
 290         td->ioprio_set = 1;
 291         return 0;
 292 }
 293
 294 static int str_prio_cb(void *data, unsigned long long *val)
 295 {
 296         struct thread_data *td = data;
 297
 298         td->ioprio |= *val;
 299
 300         /*
 301          * If no class is set, assume BE
 302          */
 303         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
 304                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
 305
 306         td->ioprio_set = 1;
 307         return 0;
 308 }
 309 #endif
 310
 311 static int str_exitall_cb(void)
 312 {
 313         exitall_on_terminate = 1;
 314         return 0;
 315 }
 316
 317 #ifdef FIO_HAVE_CPU_AFFINITY
 318 static int str_cpumask_cb(void *data, unsigned long long *val)
 319 {
 320         struct thread_data *td = data;
 321         unsigned int i;
 322         long max_cpu;
 323         int ret;
 324
 325         ret = fio_cpuset_init(&td->o.cpumask);
 326         if (ret < 0) {
 327                 log_err("fio: cpuset_init failed\n");
 328                 td_verror(td, ret, "fio_cpuset_init");
 329                 return 1;
 330         }
 331
 332         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 333
 334         for (i = 0; i < sizeof(int) * 8; i++) {
 335                 if ((1 << i) & *val) {
 336                         if (i > max_cpu) {
 337                                 log_err("fio: CPU %d too large (max=%ld)\n", i,
 338                                                                 max_cpu);
 339                                 return 1;
 340                         }
 341                         dprint(FD_PARSE, "set cpu allowed %d\n", i);
 342                         fio_cpu_set(&td->o.cpumask, i);
 343                 }
 344         }
 345
 346         td->o.cpumask_set = 1;
 347         return 0;
 348 }
 349
 350 static int set_cpus_allowed(struct thread_data *td, os_cpu_mask_t *mask,
 351                             const char *input)
 352 {
 353         char *cpu, *str, *p;
 354         long max_cpu;
 355         int ret = 0;
 356
 357         ret = fio_cpuset_init(mask);
 358         if (ret < 0) {
 359                 log_err("fio: cpuset_init failed\n");
 360                 td_verror(td, ret, "fio_cpuset_init");
 361                 return 1;
 362         }
 363
 364         p = str = strdup(input);
 365
 366         strip_blank_front(&str);
 367         strip_blank_end(str);
 368
 369         max_cpu = sysconf(_SC_NPROCESSORS_ONLN);
 370
 371         while ((cpu = strsep(&str, ",")) != NULL) {
 372                 char *str2, *cpu2;
 373                 int icpu, icpu2;
 374
 375                 if (!strlen(cpu))
 376                         break;
 377
 378                 str2 = cpu;
 379                 icpu2 = -1;
 380                 while ((cpu2 = strsep(&str2, "-")) != NULL) {
 381                         if (!strlen(cpu2))
 382                                 break;
 383
 384                         icpu2 = atoi(cpu2);
 385                 }
 386
 387                 icpu = atoi(cpu);
 388                 if (icpu2 == -1)
 389                         icpu2 = icpu;
 390                 while (icpu <= icpu2) {
 391                         if (icpu >= FIO_MAX_CPUS) {
 392                                 log_err("fio: your OS only supports up to"
 393                                         " %d CPUs\n", (int) FIO_MAX_CPUS);
 394                                 ret = 1;
 395                                 break;
 396                         }
 397                         if (icpu > max_cpu) {
 398                                 log_err("fio: CPU %d too large (max=%ld)\n",
 399                                                         icpu, max_cpu);
 400                                 ret = 1;
 401                                 break;
 402                         }
 403
 404                         dprint(FD_PARSE, "set cpu allowed %d\n", icpu);
 405                         fio_cpu_set(mask, icpu);
 406                         icpu++;
 407                 }
 408                 if (ret)
 409                         break;
 410         }
 411
 412         free(p);
 413         if (!ret)
 414                 td->o.cpumask_set = 1;
 415         return ret;
 416 }
 417
 418 static int str_cpus_allowed_cb(void *data, const char *input)
 419 {
 420         struct thread_data *td = data;
 421         int ret;
 422
 423         ret = set_cpus_allowed(td, &td->o.cpumask, input);
 424         if (!ret)
 425                 td->o.cpumask_set = 1;
 426
 427         return ret;
 428 }
 429
 430 static int str_verify_cpus_allowed_cb(void *data, const char *input)
 431 {
 432         struct thread_data *td = data;
 433         int ret;
 434
 435         ret = set_cpus_allowed(td, &td->o.verify_cpumask, input);
 436         if (!ret)
 437                 td->o.verify_cpumask_set = 1;
 438
 439         return ret;
 440 }
 441 #endif
 442
 443 #ifdef FIO_HAVE_TRIM
 444 static int str_verify_trim_cb(void *data, unsigned long long *val)
 445 {
 446         struct thread_data *td = data;
 447
 448         td->o.trim_percentage = *val;
 449         return 0;
 450 }
 451 #endif
 452
 453 static int str_fst_cb(void *data, const char *str)
 454 {
 455         struct thread_data *td = data;
 456         char *nr = get_opt_postfix(str);
 457
 458         td->file_service_nr = 1;
 459         if (nr) {
 460                 td->file_service_nr = atoi(nr);
 461                 free(nr);
 462         }
 463
 464         return 0;
 465 }
 466
 467 #ifdef FIO_HAVE_SYNC_FILE_RANGE
 468 static int str_sfr_cb(void *data, const char *str)
 469 {
 470         struct thread_data *td = data;
 471         char *nr = get_opt_postfix(str);
 472
 473         td->sync_file_range_nr = 1;
 474         if (nr) {
 475                 td->sync_file_range_nr = atoi(nr);
 476                 free(nr);
 477         }
 478
 479         return 0;
 480 }
 481 #endif
 482
 483 static int check_dir(struct thread_data *td, char *fname)
 484 {
 485         char file[PATH_MAX], *dir;
 486         int elen = 0;
 487
 488         if (td->o.directory) {
 489                 strcpy(file, td->o.directory);
 490                 strcat(file, "/");
 491                 elen = strlen(file);
 492         }
 493
 494         sprintf(file + elen, "%s", fname);
 495         dir = dirname(file);
 496
 497 #if 0
 498         {
 499         struct stat sb;
 500         /*
 501          * We can't do this on FIO_DISKLESSIO engines. The engine isn't loaded
 502          * yet, so we can't do this check right here...
 503          */
 504         if (lstat(dir, &sb) < 0) {
 505                 int ret = errno;
 506
 507                 log_err("fio: %s is not a directory\n", dir);
 508                 td_verror(td, ret, "lstat");
 509                 return 1;
 510         }
 511
 512         if (!S_ISDIR(sb.st_mode)) {
 513                 log_err("fio: %s is not a directory\n", dir);
 514                 return 1;
 515         }
 516         }
 517 #endif
 518
 519         return 0;
 520 }
 521
 522 /*
 523  * Return next file in the string. Files are separated with ':'. If the ':'
 524  * is escaped with a '\', then that ':' is part of the filename and does not
 525  * indicate a new file.
 526  */
 527 static char *get_next_file_name(char **ptr)
 528 {
 529         char *str = *ptr;
 530         char *p, *start;
 531
 532         if (!str || !strlen(str))
 533                 return NULL;
 534
 535         start = str;
 536         do {
 537                 /*
 538                  * No colon, we are done
 539                  */
 540                 p = strchr(str, ':');
 541                 if (!p) {
 542                         *ptr = NULL;
 543                         break;
 544                 }
 545
 546                 /*
 547                  * We got a colon, but it's the first character. Skip and
 548                  * continue
 549                  */
 550                 if (p == start) {
 551                         str = ++start;
 552                         continue;
 553                 }
 554
 555                 if (*(p - 1) != '\\') {
 556                         *p = '\0';
 557                         *ptr = p + 1;
 558                         break;
 559                 }
 560
 561                 memmove(p - 1, p, strlen(p) + 1);
 562                 str = p;
 563         } while (1);
 564
 565         return start;
 566 }
 567
 568 static int str_filename_cb(void *data, const char *input)
 569 {
 570         struct thread_data *td = data;
 571         char *fname, *str, *p;
 572
 573         p = str = strdup(input);
 574
 575         strip_blank_front(&str);
 576         strip_blank_end(str);
 577
 578         if (!td->files_index)
 579                 td->o.nr_files = 0;
 580
 581         while ((fname = get_next_file_name(&str)) != NULL) {
 582                 if (!strlen(fname))
 583                         break;
 584                 if (check_dir(td, fname)) {
 585                         free(p);
 586                         return 1;
 587                 }
 588                 add_file(td, fname);
 589                 td->o.nr_files++;
 590         }
 591
 592         free(p);
 593         return 0;
 594 }
 595
 596 static int str_directory_cb(void *data, const char fio_unused *str)
 597 {
 598         struct thread_data *td = data;
 599         struct stat sb;
 600
 601         if (lstat(td->o.directory, &sb) < 0) {
 602                 int ret = errno;
 603
 604                 log_err("fio: %s is not a directory\n", td->o.directory);
 605                 td_verror(td, ret, "lstat");
 606                 return 1;
 607         }
 608         if (!S_ISDIR(sb.st_mode)) {
 609                 log_err("fio: %s is not a directory\n", td->o.directory);
 610                 return 1;
 611         }
 612
 613         return 0;
 614 }
 615
 616 static int str_opendir_cb(void *data, const char fio_unused *str)
 617 {
 618         struct thread_data *td = data;
 619
 620         if (!td->files_index)
 621                 td->o.nr_files = 0;
 622
 623         return add_dir_files(td, td->o.opendir);
 624 }
 625
 626 static int str_verify_offset_cb(void *data, unsigned long long *off)
 627 {
 628         struct thread_data *td = data;
 629
 630         if (*off && *off < sizeof(struct verify_header)) {
 631                 log_err("fio: verify_offset too small\n");
 632                 return 1;
 633         }
 634
 635         td->o.verify_offset = *off;
 636         return 0;
 637 }
 638
 639 static int str_verify_pattern_cb(void *data, const char *input)
 640 {
 641         struct thread_data *td = data;
 642         long off;
 643         int i = 0, j = 0, len, k, base = 10;
 644         char* loc1, * loc2;
 645
 646         loc1 = strstr(input, "0x");
 647         loc2 = strstr(input, "0X");
 648         if (loc1 || loc2)
 649                 base = 16;
 650         off = strtol(input, NULL, base);
 651         if (off != LONG_MAX || errno != ERANGE) {
 652                 while (off) {
 653                         td->o.verify_pattern[i] = off & 0xff;
 654                         off >>= 8;
 655                         i++;
 656                 }
 657         } else {
 658                 len = strlen(input);
 659                 k = len - 1;
 660                 if (base == 16) {
 661                         if (loc1)
 662                                 j = loc1 - input + 2;
 663                         else
 664                                 j = loc2 - input + 2;
 665                 } else
 666                         return 1;
 667                 if (len - j < MAX_PATTERN_SIZE * 2) {
 668                         while (k >= j) {
 669                                 off = converthexchartoint(input[k--]);
 670                                 if (k >= j)
 671                                         off += (converthexchartoint(input[k--])
 672                                                 * 16);
 673                                 td->o.verify_pattern[i++] = (char) off;
 674                         }
 675                 }
 676         }
 677         td->o.verify_pattern_bytes = i;
 678         return 0;
 679 }
 680
 681 static int str_lockfile_cb(void *data, const char *str)
 682 {
 683         struct thread_data *td = data;
 684         char *nr = get_opt_postfix(str);
 685
 686         td->o.lockfile_batch = 1;
 687         if (nr) {
 688                 td->o.lockfile_batch = atoi(nr);
 689                 free(nr);
 690         }
 691
 692         return 0;
 693 }
 694
 695 static int str_write_bw_log_cb(void *data, const char *str)
 696 {
 697         struct thread_data *td = data;
 698
 699         if (str)
 700                 td->o.bw_log_file = strdup(str);
 701
 702         td->o.write_bw_log = 1;
 703         return 0;
 704 }
 705
 706 static int str_write_lat_log_cb(void *data, const char *str)
 707 {
 708         struct thread_data *td = data;
 709
 710         if (str)
 711                 td->o.lat_log_file = strdup(str);
 712
 713         td->o.write_lat_log = 1;
 714         return 0;
 715 }
 716
 717 static int str_gtod_reduce_cb(void *data, int *il)
 718 {
 719         struct thread_data *td = data;
 720         int val = *il;
 721
 722         td->o.disable_lat = !!val;
 723         td->o.disable_clat = !!val;
 724         td->o.disable_slat = !!val;
 725         td->o.disable_bw = !!val;
 726         if (val)
 727                 td->tv_cache_mask = 63;
 728
 729         return 0;
 730 }
 731
 732 static int str_gtod_cpu_cb(void *data, long long *il)
 733 {
 734         struct thread_data *td = data;
 735         int val = *il;
 736
 737         td->o.gtod_cpu = val;
 738         td->o.gtod_offload = 1;
 739         return 0;
 740 }
 741
 742 static int rw_verify(struct fio_option *o, void *data)
 743 {
 744         struct thread_data *td = data;
 745
 746         if (read_only && td_write(td)) {
 747                 log_err("fio: job <%s> has write bit set, but fio is in"
 748                         " read-only mode\n", td->o.name);
 749                 return 1;
 750         }
 751
 752         return 0;
 753 }
 754
 755 static int gtod_cpu_verify(struct fio_option *o, void *data)
 756 {
 757 #ifndef FIO_HAVE_CPU_AFFINITY
 758         struct thread_data *td = data;
 759
 760         if (td->o.gtod_cpu) {
 761                 log_err("fio: platform must support CPU affinity for"
 762                         "gettimeofday() offloading\n");
 763                 return 1;
 764         }
 765 #endif
 766
 767         return 0;
 768 }
 769
 770 static int kb_base_verify(struct fio_option *o, void *data)
 771 {
 772         struct thread_data *td = data;
 773
 774         if (td->o.kb_base != 1024 && td->o.kb_base != 1000) {
 775                 log_err("fio: kb_base set to nonsensical value: %u\n",
 776                                 td->o.kb_base);
 777                 return 1;
 778         }
 779
 780         return 0;
 781 }
 782
 783 #define __stringify_1(x)        #x
 784 #define __stringify(x)          __stringify_1(x)
 785
 786 /*
 787  * Map of job/command line options
 788  */
 789 static struct fio_option options[FIO_MAX_OPTS] = {
 790         {
 791                 .name   = "description",
 792                 .type   = FIO_OPT_STR_STORE,
 793                 .off1   = td_var_offset(description),
 794                 .help   = "Text job description",
 795         },
 796         {
 797                 .name   = "name",
 798                 .type   = FIO_OPT_STR_STORE,
 799                 .off1   = td_var_offset(name),
 800                 .help   = "Name of this job",
 801         },
 802         {
 803                 .name   = "directory",
 804                 .type   = FIO_OPT_STR_STORE,
 805                 .off1   = td_var_offset(directory),
 806                 .cb     = str_directory_cb,
 807                 .help   = "Directory to store files in",
 808         },
 809         {
 810                 .name   = "filename",
 811                 .type   = FIO_OPT_STR_STORE,
 812                 .off1   = td_var_offset(filename),
 813                 .cb     = str_filename_cb,
 814                 .prio   = -1, /* must come after "directory" */
 815                 .help   = "File(s) to use for the workload",
 816         },
 817         {
 818                 .name   = "kb_base",
 819                 .type   = FIO_OPT_INT,
 820                 .off1   = td_var_offset(kb_base),
 821                 .verify = kb_base_verify,
 822                 .prio   = 1,
 823                 .def    = "1024",
 824                 .help   = "How many bytes per KB for reporting (1000 or 1024)",
 825         },
 826         {
 827                 .name   = "lockfile",
 828                 .type   = FIO_OPT_STR,
 829                 .cb     = str_lockfile_cb,
 830                 .off1   = td_var_offset(file_lock_mode),
 831                 .help   = "Lock file when doing IO to it",
 832                 .parent = "filename",
 833                 .def    = "none",
 834                 .posval = {
 835                           { .ival = "none",
 836                             .oval = FILE_LOCK_NONE,
 837                             .help = "No file locking",
 838                           },
 839                           { .ival = "exclusive",
 840                             .oval = FILE_LOCK_EXCLUSIVE,
 841                             .help = "Exclusive file lock",
 842                           },
 843                           {
 844                             .ival = "readwrite",
 845                             .oval = FILE_LOCK_READWRITE,
 846                             .help = "Read vs write lock",
 847                           },
 848                 },
 849         },
 850         {
 851                 .name   = "opendir",
 852                 .type   = FIO_OPT_STR_STORE,
 853                 .off1   = td_var_offset(opendir),
 854                 .cb     = str_opendir_cb,
 855                 .help   = "Recursively add files from this directory and down",
 856         },
 857         {
 858                 .name   = "rw",
 859                 .alias  = "readwrite",
 860                 .type   = FIO_OPT_STR,
 861                 .cb     = str_rw_cb,
 862                 .off1   = td_var_offset(td_ddir),
 863                 .help   = "IO direction",
 864                 .def    = "read",
 865                 .verify = rw_verify,
 866                 .posval = {
 867                           { .ival = "read",
 868                             .oval = TD_DDIR_READ,
 869                             .help = "Sequential read",
 870                           },
 871                           { .ival = "write",
 872                             .oval = TD_DDIR_WRITE,
 873                             .help = "Sequential write",
 874                           },
 875                           { .ival = "randread",
 876                             .oval = TD_DDIR_RANDREAD,
 877                             .help = "Random read",
 878                           },
 879                           { .ival = "randwrite",
 880                             .oval = TD_DDIR_RANDWRITE,
 881                             .help = "Random write",
 882                           },
 883                           { .ival = "rw",
 884                             .oval = TD_DDIR_RW,
 885                             .help = "Sequential read and write mix",
 886                           },
 887                           { .ival = "randrw",
 888                             .oval = TD_DDIR_RANDRW,
 889                             .help = "Random read and write mix"
 890                           },
 891                 },
 892         },
 893         {
 894                 .name   = "rw_sequencer",
 895                 .type   = FIO_OPT_STR,
 896                 .off1   = td_var_offset(rw_seq),
 897                 .help   = "IO offset generator modifier",
 898                 .def    = "sequential",
 899                 .posval = {
 900                           { .ival = "sequential",
 901                             .oval = RW_SEQ_SEQ,
 902                             .help = "Generate sequential offsets",
 903                           },
 904                           { .ival = "identical",
 905                             .oval = RW_SEQ_IDENT,
 906                             .help = "Generate identical offsets",
 907                           },
 908                 },
 909         },
 910
 911         {
 912                 .name   = "ioengine",
 913                 .type   = FIO_OPT_STR_STORE,
 914                 .off1   = td_var_offset(ioengine),
 915                 .help   = "IO engine to use",
 916                 .def    = "sync",
 917                 .posval = {
 918                           { .ival = "sync",
 919                             .help = "Use read/write",
 920                           },
 921                           { .ival = "psync",
 922                             .help = "Use pread/pwrite",
 923                           },
 924                           { .ival = "vsync",
 925                             .help = "Use readv/writev",
 926                           },
 927 #ifdef FIO_HAVE_LIBAIO
 928                           { .ival = "libaio",
 929                             .help = "Linux native asynchronous IO",
 930                           },
 931 #endif
 932 #ifdef FIO_HAVE_POSIXAIO
 933                           { .ival = "posixaio",
 934                             .help = "POSIX asynchronous IO",
 935                           },
 936 #endif
 937 #ifdef FIO_HAVE_SOLARISAIO
 938                           { .ival = "solarisaio",
 939                             .help = "Solaris native asynchronous IO",
 940                           },
 941 #endif
 942 #ifdef FIO_HAVE_WINDOWSAIO
 943                           { .ival = "windowsaio",
 944                                 .help = "Windows native asynchronous IO"
 945                           },
 946                           { .ival = "mmap",
 947                             .help = "Memory mapped IO"
 948                           },
 949 #endif
 950 #ifdef FIO_HAVE_SPLICE
 951                           { .ival = "splice",
 952                             .help = "splice/vmsplice based IO",
 953                           },
 954                           { .ival = "netsplice",
 955                             .help = "splice/vmsplice to/from the network",
 956                           },
 957 #endif
 958 #ifdef FIO_HAVE_SGIO
 959                           { .ival = "sg",
 960                             .help = "SCSI generic v3 IO",
 961                           },
 962 #endif
 963                           { .ival = "null",
 964                             .help = "Testing engine (no data transfer)",
 965                           },
 966                           { .ival = "net",
 967                             .help = "Network IO",
 968                           },
 969 #ifdef FIO_HAVE_SYSLET
 970                           { .ival = "syslet-rw",
 971                             .help = "syslet enabled async pread/pwrite IO",
 972                           },
 973 #endif
 974                           { .ival = "cpuio",
 975                             .help = "CPU cycle burner engine",
 976                           },
 977 #ifdef FIO_HAVE_GUASI
 978                           { .ival = "guasi",
 979                             .help = "GUASI IO engine",
 980                           },
 981 #endif
 982 #ifdef FIO_HAVE_BINJECT
 983                           { .ival = "binject",
 984                             .help = "binject direct inject block engine",
 985                           },
 986 #endif
 987                           { .ival = "external",
 988                             .help = "Load external engine (append name)",
 989                           },
 990                 },
 991         },
 992         {
 993                 .name   = "iodepth",
 994                 .type   = FIO_OPT_INT,
 995                 .off1   = td_var_offset(iodepth),
 996                 .help   = "Number of IO buffers to keep in flight",
 997                 .minval = 1,
 998                 .def    = "1",
 999         },
1000         {
1001                 .name   = "iodepth_batch",
1002                 .alias  = "iodepth_batch_submit",
1003                 .type   = FIO_OPT_INT,
1004                 .off1   = td_var_offset(iodepth_batch),
1005                 .help   = "Number of IO buffers to submit in one go",
1006                 .parent = "iodepth",
1007                 .minval = 1,
1008                 .def    = "1",
1009         },
1010         {
1011                 .name   = "iodepth_batch_complete",
1012                 .type   = FIO_OPT_INT,
1013                 .off1   = td_var_offset(iodepth_batch_complete),
1014                 .help   = "Number of IO buffers to retrieve in one go",
1015                 .parent = "iodepth",
1016                 .minval = 0,
1017                 .def    = "1",
1018         },
1019         {
1020                 .name   = "iodepth_low",
1021                 .type   = FIO_OPT_INT,
1022                 .off1   = td_var_offset(iodepth_low),
1023                 .help   = "Low water mark for queuing depth",
1024                 .parent = "iodepth",
1025         },
1026         {
1027                 .name   = "size",
1028                 .type   = FIO_OPT_STR_VAL,
1029                 .off1   = td_var_offset(size),
1030                 .minval = 1,
1031                 .help   = "Total size of device or files",
1032         },
1033         {
1034                 .name   = "fill_device",
1035                 .type   = FIO_OPT_BOOL,
1036                 .off1   = td_var_offset(fill_device),
1037                 .help   = "Write until an ENOSPC error occurs",
1038                 .def    = "0",
1039         },
1040         {
1041                 .name   = "filesize",
1042                 .type   = FIO_OPT_STR_VAL,
1043                 .off1   = td_var_offset(file_size_low),
1044                 .off2   = td_var_offset(file_size_high),
1045                 .minval = 1,
1046                 .help   = "Size of individual files",
1047         },
1048         {
1049                 .name   = "offset",
1050                 .alias  = "fileoffset",
1051                 .type   = FIO_OPT_STR_VAL,
1052                 .off1   = td_var_offset(start_offset),
1053                 .help   = "Start IO from this offset",
1054                 .def    = "0",
1055         },
1056         {
1057                 .name   = "bs",
1058                 .alias  = "blocksize",
1059                 .type   = FIO_OPT_INT,
1060                 .off1   = td_var_offset(bs[DDIR_READ]),
1061                 .off2   = td_var_offset(bs[DDIR_WRITE]),
1062                 .minval = 1,
1063                 .help   = "Block size unit",
1064                 .def    = "4k",
1065                 .parent = "rw",
1066         },
1067         {
1068                 .name   = "ba",
1069                 .alias  = "blockalign",
1070                 .type   = FIO_OPT_INT,
1071                 .off1   = td_var_offset(ba[DDIR_READ]),
1072                 .off2   = td_var_offset(ba[DDIR_WRITE]),
1073                 .minval = 1,
1074                 .help   = "IO block offset alignment",
1075                 .parent = "rw",
1076         },
1077         {
1078                 .name   = "bsrange",
1079                 .alias  = "blocksize_range",
1080                 .type   = FIO_OPT_RANGE,
1081                 .off1   = td_var_offset(min_bs[DDIR_READ]),
1082                 .off2   = td_var_offset(max_bs[DDIR_READ]),
1083                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
1084                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
1085                 .minval = 1,
1086                 .help   = "Set block size range (in more detail than bs)",
1087                 .parent = "rw",
1088         },
1089         {
1090                 .name   = "bssplit",
1091                 .type   = FIO_OPT_STR,
1092                 .cb     = str_bssplit_cb,
1093                 .help   = "Set a specific mix of block sizes",
1094                 .parent = "rw",
1095         },
1096         {
1097                 .name   = "bs_unaligned",
1098                 .alias  = "blocksize_unaligned",
1099                 .type   = FIO_OPT_STR_SET,
1100                 .off1   = td_var_offset(bs_unaligned),
1101                 .help   = "Don't sector align IO buffer sizes",
1102                 .parent = "rw",
1103         },
1104         {
1105                 .name   = "randrepeat",
1106                 .type   = FIO_OPT_BOOL,
1107                 .off1   = td_var_offset(rand_repeatable),
1108                 .help   = "Use repeatable random IO pattern",
1109                 .def    = "1",
1110                 .parent = "rw",
1111         },
1112         {
1113                 .name   = "norandommap",
1114                 .type   = FIO_OPT_STR_SET,
1115                 .off1   = td_var_offset(norandommap),
1116                 .help   = "Accept potential duplicate random blocks",
1117                 .parent = "rw",
1118         },
1119         {
1120                 .name   = "softrandommap",
1121                 .type   = FIO_OPT_BOOL,
1122                 .off1   = td_var_offset(softrandommap),
1123                 .help   = "Set norandommap if randommap allocation fails",
1124                 .parent = "norandommap",
1125                 .def    = "0",
1126         },
1127         {
1128                 .name   = "nrfiles",
1129                 .alias  = "nr_files",
1130                 .type   = FIO_OPT_INT,
1131                 .off1   = td_var_offset(nr_files),
1132                 .help   = "Split job workload between this number of files",
1133                 .def    = "1",
1134         },
1135         {
1136                 .name   = "openfiles",
1137                 .type   = FIO_OPT_INT,
1138                 .off1   = td_var_offset(open_files),
1139                 .help   = "Number of files to keep open at the same time",
1140         },
1141         {
1142                 .name   = "file_service_type",
1143                 .type   = FIO_OPT_STR,
1144                 .cb     = str_fst_cb,
1145                 .off1   = td_var_offset(file_service_type),
1146                 .help   = "How to select which file to service next",
1147                 .def    = "roundrobin",
1148                 .posval = {
1149                           { .ival = "random",
1150                             .oval = FIO_FSERVICE_RANDOM,
1151                             .help = "Choose a file at random",
1152                           },
1153                           { .ival = "roundrobin",
1154                             .oval = FIO_FSERVICE_RR,
1155                             .help = "Round robin select files",
1156                           },
1157                           { .ival = "sequential",
1158                             .oval = FIO_FSERVICE_SEQ,
1159                             .help = "Finish one file before moving to the next",
1160                           },
1161                 },
1162                 .parent = "nrfiles",
1163         },
1164 #ifdef FIO_HAVE_FALLOCATE
1165         {
1166                 .name   = "fallocate",
1167                 .type   = FIO_OPT_BOOL,
1168                 .off1   = td_var_offset(fallocate),
1169                 .help   = "Use fallocate() when laying out files",
1170                 .def    = "1",
1171         },
1172 #endif
1173         {
1174                 .name   = "fadvise_hint",
1175                 .type   = FIO_OPT_BOOL,
1176                 .off1   = td_var_offset(fadvise_hint),
1177                 .help   = "Use fadvise() to advise the kernel on IO pattern",
1178                 .def    = "1",
1179         },
1180         {
1181                 .name   = "fsync",
1182                 .type   = FIO_OPT_INT,
1183                 .off1   = td_var_offset(fsync_blocks),
1184                 .help   = "Issue fsync for writes every given number of blocks",
1185                 .def    = "0",
1186         },
1187         {
1188                 .name   = "fdatasync",
1189                 .type   = FIO_OPT_INT,
1190                 .off1   = td_var_offset(fdatasync_blocks),
1191                 .help   = "Issue fdatasync for writes every given number of blocks",
1192                 .def    = "0",
1193         },
1194         {
1195                 .name   = "write_barrier",
1196                 .type   = FIO_OPT_INT,
1197                 .off1   = td_var_offset(barrier_blocks),
1198                 .help   = "Make every Nth write a barrier write",
1199                 .def    = "0",
1200         },
1201 #ifdef FIO_HAVE_SYNC_FILE_RANGE
1202         {
1203                 .name   = "sync_file_range",
1204                 .posval = {
1205                           { .ival = "wait_before",
1206                             .oval = SYNC_FILE_RANGE_WAIT_BEFORE,
1207                             .help = "SYNC_FILE_RANGE_WAIT_BEFORE",
1208                             .or   = 1,
1209                           },
1210                           { .ival = "write",
1211                             .oval = SYNC_FILE_RANGE_WRITE,
1212                             .help = "SYNC_FILE_RANGE_WRITE",
1213                             .or   = 1,
1214                           },
1215                           {
1216                             .ival = "wait_after",
1217                             .oval = SYNC_FILE_RANGE_WAIT_AFTER,
1218                             .help = "SYNC_FILE_RANGE_WAIT_AFTER",
1219                             .or   = 1,
1220                           },
1221                 },
1222                 .type   = FIO_OPT_STR_MULTI,
1223                 .cb     = str_sfr_cb,
1224                 .off1   = td_var_offset(sync_file_range),
1225                 .help   = "Use sync_file_range()",
1226         },
1227 #endif
1228         {
1229                 .name   = "direct",
1230                 .type   = FIO_OPT_BOOL,
1231                 .off1   = td_var_offset(odirect),
1232                 .help   = "Use O_DIRECT IO (negates buffered)",
1233                 .def    = "0",
1234         },
1235         {
1236                 .name   = "buffered",
1237                 .type   = FIO_OPT_BOOL,
1238                 .off1   = td_var_offset(odirect),
1239                 .neg    = 1,
1240                 .help   = "Use buffered IO (negates direct)",
1241                 .def    = "1",
1242         },
1243         {
1244                 .name   = "overwrite",
1245                 .type   = FIO_OPT_BOOL,
1246                 .off1   = td_var_offset(overwrite),
1247                 .help   = "When writing, set whether to overwrite current data",
1248                 .def    = "0",
1249         },
1250         {
1251                 .name   = "loops",
1252                 .type   = FIO_OPT_INT,
1253                 .off1   = td_var_offset(loops),
1254                 .help   = "Number of times to run the job",
1255                 .def    = "1",
1256         },
1257         {
1258                 .name   = "numjobs",
1259                 .type   = FIO_OPT_INT,
1260                 .off1   = td_var_offset(numjobs),
1261                 .help   = "Duplicate this job this many times",
1262                 .def    = "1",
1263         },
1264         {
1265                 .name   = "startdelay",
1266                 .type   = FIO_OPT_STR_VAL_TIME,
1267                 .off1   = td_var_offset(start_delay),
1268                 .help   = "Only start job when this period has passed",
1269                 .def    = "0",
1270         },
1271         {
1272                 .name   = "runtime",
1273                 .alias  = "timeout",
1274                 .type   = FIO_OPT_STR_VAL_TIME,
1275                 .off1   = td_var_offset(timeout),
1276                 .help   = "Stop workload when this amount of time has passed",
1277                 .def    = "0",
1278         },
1279         {
1280                 .name   = "time_based",
1281                 .type   = FIO_OPT_STR_SET,
1282                 .off1   = td_var_offset(time_based),
1283                 .help   = "Keep running until runtime/timeout is met",
1284         },
1285         {
1286                 .name   = "ramp_time",
1287                 .type   = FIO_OPT_STR_VAL_TIME,
1288                 .off1   = td_var_offset(ramp_time),
1289                 .help   = "Ramp up time before measuring performance",
1290         },
1291         {
1292                 .name   = "clocksource",
1293                 .type   = FIO_OPT_STR,
1294                 .cb     = fio_clock_source_cb,
1295                 .off1   = td_var_offset(clocksource),
1296                 .help   = "What type of timing source to use",
1297                 .posval = {
1298                           { .ival = "gettimeofday",
1299                             .oval = CS_GTOD,
1300                             .help = "Use gettimeofday(2) for timing",
1301                           },
1302                           { .ival = "clock_gettime",
1303                             .oval = CS_CGETTIME,
1304                             .help = "Use clock_gettime(2) for timing",
1305                           },
1306 #ifdef ARCH_HAVE_CPU_CLOCK
1307                           { .ival = "cpu",
1308                             .oval = CS_CPUCLOCK,
1309                             .help = "Use CPU private clock",
1310                           },
1311 #endif
1312                 },
1313         },
1314         {
1315                 .name   = "mem",
1316                 .alias  = "iomem",
1317                 .type   = FIO_OPT_STR,
1318                 .cb     = str_mem_cb,
1319                 .off1   = td_var_offset(mem_type),
1320                 .help   = "Backing type for IO buffers",
1321                 .def    = "malloc",
1322                 .posval = {
1323                           { .ival = "malloc",
1324                             .oval = MEM_MALLOC,
1325                             .help = "Use malloc(3) for IO buffers",
1326                           },
1327                           { .ival = "shm",
1328                             .oval = MEM_SHM,
1329                             .help = "Use shared memory segments for IO buffers",
1330                           },
1331 #ifdef FIO_HAVE_HUGETLB
1332                           { .ival = "shmhuge",
1333                             .oval = MEM_SHMHUGE,
1334                             .help = "Like shm, but use huge pages",
1335                           },
1336 #endif
1337                           { .ival = "mmap",
1338                             .oval = MEM_MMAP,
1339                             .help = "Use mmap(2) (file or anon) for IO buffers",
1340                           },
1341 #ifdef FIO_HAVE_HUGETLB
1342                           { .ival = "mmaphuge",
1343                             .oval = MEM_MMAPHUGE,
1344                             .help = "Like mmap, but use huge pages",
1345                           },
1346 #endif
1347                   },
1348         },
1349         {
1350                 .name   = "iomem_align",
1351                 .alias  = "mem_align",
1352                 .type   = FIO_OPT_INT,
1353                 .off1   = td_var_offset(mem_align),
1354                 .minval = 0,
1355                 .help   = "IO memory buffer offset alignment",
1356                 .def    = "0",
1357                 .parent = "iomem",
1358         },
1359         {
1360                 .name   = "verify",
1361                 .type   = FIO_OPT_STR,
1362                 .off1   = td_var_offset(verify),
1363                 .help   = "Verify data written",
1364                 .cb     = str_verify_cb,
1365                 .def    = "0",
1366                 .posval = {
1367                           { .ival = "0",
1368                             .oval = VERIFY_NONE,
1369                             .help = "Don't do IO verification",
1370                           },
1371                           { .ival = "md5",
1372                             .oval = VERIFY_MD5,
1373                             .help = "Use md5 checksums for verification",
1374                           },
1375                           { .ival = "crc64",
1376                             .oval = VERIFY_CRC64,
1377                             .help = "Use crc64 checksums for verification",
1378                           },
1379                           { .ival = "crc32",
1380                             .oval = VERIFY_CRC32,
1381                             .help = "Use crc32 checksums for verification",
1382                           },
1383                           { .ival = "crc32c-intel",
1384                             .oval = VERIFY_CRC32C_INTEL,
1385                             .help = "Use hw crc32c checksums for verification",
1386                           },
1387                           { .ival = "crc32c",
1388                             .oval = VERIFY_CRC32C,
1389                             .help = "Use crc32c checksums for verification",
1390                           },
1391                           { .ival = "crc16",
1392                             .oval = VERIFY_CRC16,
1393                             .help = "Use crc16 checksums for verification",
1394                           },
1395                           { .ival = "crc7",
1396                             .oval = VERIFY_CRC7,
1397                             .help = "Use crc7 checksums for verification",
1398                           },
1399                           { .ival = "sha1",
1400                             .oval = VERIFY_SHA1,
1401                             .help = "Use sha1 checksums for verification",
1402                           },
1403                           { .ival = "sha256",
1404                             .oval = VERIFY_SHA256,
1405                             .help = "Use sha256 checksums for verification",
1406                           },
1407                           { .ival = "sha512",
1408                             .oval = VERIFY_SHA512,
1409                             .help = "Use sha512 checksums for verification",
1410                           },
1411                           { .ival = "meta",
1412                             .oval = VERIFY_META,
1413                             .help = "Use io information",
1414                           },
1415                           {
1416                             .ival = "null",
1417                             .oval = VERIFY_NULL,
1418                             .help = "Pretend to verify",
1419                           },
1420                 },
1421         },
1422         {
1423                 .name   = "do_verify",
1424                 .type   = FIO_OPT_BOOL,
1425                 .off1   = td_var_offset(do_verify),
1426                 .help   = "Run verification stage after write",
1427                 .def    = "1",
1428                 .parent = "verify",
1429         },
1430         {
1431                 .name   = "verifysort",
1432                 .type   = FIO_OPT_BOOL,
1433                 .off1   = td_var_offset(verifysort),
1434                 .help   = "Sort written verify blocks for read back",
1435                 .def    = "1",
1436                 .parent = "verify",
1437         },
1438         {
1439                 .name   = "verify_interval",
1440                 .type   = FIO_OPT_INT,
1441                 .off1   = td_var_offset(verify_interval),
1442                 .minval = 2 * sizeof(struct verify_header),
1443                 .help   = "Store verify buffer header every N bytes",
1444                 .parent = "verify",
1445         },
1446         {
1447                 .name   = "verify_offset",
1448                 .type   = FIO_OPT_INT,
1449                 .help   = "Offset verify header location by N bytes",
1450                 .def    = "0",
1451                 .cb     = str_verify_offset_cb,
1452                 .parent = "verify",
1453         },
1454         {
1455                 .name   = "verify_pattern",
1456                 .type   = FIO_OPT_STR,
1457                 .cb     = str_verify_pattern_cb,
1458                 .help   = "Fill pattern for IO buffers",
1459                 .parent = "verify",
1460         },
1461         {
1462                 .name   = "verify_fatal",
1463                 .type   = FIO_OPT_BOOL,
1464                 .off1   = td_var_offset(verify_fatal),
1465                 .def    = "0",
1466                 .help   = "Exit on a single verify failure, don't continue",
1467                 .parent = "verify",
1468         },
1469         {
1470                 .name   = "verify_async",
1471                 .type   = FIO_OPT_INT,
1472                 .off1   = td_var_offset(verify_async),
1473                 .def    = "0",
1474                 .help   = "Number of async verifier threads to use",
1475                 .parent = "verify",
1476         },
1477         {
1478                 .name   = "verify_backlog",
1479                 .type   = FIO_OPT_STR_VAL,
1480                 .off1   = td_var_offset(verify_backlog),
1481                 .help   = "Verify after this number of blocks are written",
1482                 .parent = "verify",
1483         },
1484         {
1485                 .name   = "verify_backlog_batch",
1486                 .type   = FIO_OPT_INT,
1487                 .off1   = td_var_offset(verify_batch),
1488                 .help   = "Verify this number of IO blocks",
1489                 .parent = "verify",
1490         },
1491 #ifdef FIO_HAVE_CPU_AFFINITY
1492         {
1493                 .name   = "verify_async_cpus",
1494                 .type   = FIO_OPT_STR,
1495                 .cb     = str_verify_cpus_allowed_cb,
1496                 .help   = "Set CPUs allowed for async verify threads",
1497                 .parent = "verify_async",
1498         },
1499 #endif
1500 #ifdef FIO_HAVE_TRIM
1501         {
1502                 .name   = "trim_percentage",
1503                 .type   = FIO_OPT_INT,
1504                 .cb     = str_verify_trim_cb,
1505                 .maxval = 100,
1506                 .help   = "Number of verify blocks to discard/trim",
1507                 .parent = "verify",
1508                 .def    = "0",
1509         },
1510         {
1511                 .name   = "trim_verify_zero",
1512                 .type   = FIO_OPT_INT,
1513                 .help   = "Verify that trim/discarded blocks are returned as zeroes",
1514                 .off1   = td_var_offset(trim_zero),
1515                 .parent = "trim_percentage",
1516                 .def    = "1",
1517         },
1518         {
1519                 .name   = "trim_backlog",
1520                 .type   = FIO_OPT_STR_VAL,
1521                 .off1   = td_var_offset(trim_backlog),
1522                 .help   = "Trim after this number of blocks are written",
1523                 .parent = "trim_percentage",
1524         },
1525         {
1526                 .name   = "trim_backlog_batch",
1527                 .type   = FIO_OPT_INT,
1528                 .off1   = td_var_offset(trim_batch),
1529                 .help   = "Trim this number of IO blocks",
1530                 .parent = "trim_percentage",
1531         },
1532 #endif
1533         {
1534                 .name   = "write_iolog",
1535                 .type   = FIO_OPT_STR_STORE,
1536                 .off1   = td_var_offset(write_iolog_file),
1537                 .help   = "Store IO pattern to file",
1538         },
1539         {
1540                 .name   = "read_iolog",
1541                 .type   = FIO_OPT_STR_STORE,
1542                 .off1   = td_var_offset(read_iolog_file),
1543                 .help   = "Playback IO pattern from file",
1544         },
1545         {
1546                 .name   = "replay_no_stall",
1547                 .type   = FIO_OPT_INT,
1548                 .off1   = td_var_offset(no_stall),
1549                 .def    = "0",
1550                 .parent = "read_iolog",
1551                 .help   = "Playback IO pattern file as fast as possible without stalls",
1552         },
1553         {
1554                 .name   = "replay_redirect",
1555                 .type   = FIO_OPT_STR_STORE,
1556                 .off1   = td_var_offset(replay_redirect),
1557                 .parent = "read_iolog",
1558                 .help   = "Replay all I/O onto this device, regardless of trace device",
1559         },
1560         {
1561                 .name   = "exec_prerun",
1562                 .type   = FIO_OPT_STR_STORE,
1563                 .off1   = td_var_offset(exec_prerun),
1564                 .help   = "Execute this file prior to running job",
1565         },
1566         {
1567                 .name   = "exec_postrun",
1568                 .type   = FIO_OPT_STR_STORE,
1569                 .off1   = td_var_offset(exec_postrun),
1570                 .help   = "Execute this file after running job",
1571         },
1572 #ifdef FIO_HAVE_IOSCHED_SWITCH
1573         {
1574                 .name   = "ioscheduler",
1575                 .type   = FIO_OPT_STR_STORE,
1576                 .off1   = td_var_offset(ioscheduler),
1577                 .help   = "Use this IO scheduler on the backing device",
1578         },
1579 #endif
1580         {
1581                 .name   = "zonesize",
1582                 .type   = FIO_OPT_STR_VAL,
1583                 .off1   = td_var_offset(zone_size),
1584                 .help   = "Give size of an IO zone",
1585                 .def    = "0",
1586         },
1587         {
1588                 .name   = "zoneskip",
1589                 .type   = FIO_OPT_STR_VAL,
1590                 .off1   = td_var_offset(zone_skip),
1591                 .help   = "Space between IO zones",
1592                 .def    = "0",
1593         },
1594         {
1595                 .name   = "lockmem",
1596                 .type   = FIO_OPT_STR_VAL,
1597                 .cb     = str_lockmem_cb,
1598                 .help   = "Lock down this amount of memory",
1599                 .def    = "0",
1600         },
1601         {
1602                 .name   = "rwmixread",
1603                 .type   = FIO_OPT_INT,
1604                 .cb     = str_rwmix_read_cb,
1605                 .maxval = 100,
1606                 .help   = "Percentage of mixed workload that is reads",
1607                 .def    = "50",
1608         },
1609         {
1610                 .name   = "rwmixwrite",
1611                 .type   = FIO_OPT_INT,
1612                 .cb     = str_rwmix_write_cb,
1613                 .maxval = 100,
1614                 .help   = "Percentage of mixed workload that is writes",
1615                 .def    = "50",
1616         },
1617         {
1618                 .name   = "rwmixcycle",
1619                 .type   = FIO_OPT_DEPRECATED,
1620         },
1621         {
1622                 .name   = "nice",
1623                 .type   = FIO_OPT_INT,
1624                 .off1   = td_var_offset(nice),
1625                 .help   = "Set job CPU nice value",
1626                 .minval = -19,
1627                 .maxval = 20,
1628                 .def    = "0",
1629         },
1630 #ifdef FIO_HAVE_IOPRIO
1631         {
1632                 .name   = "prio",
1633                 .type   = FIO_OPT_INT,
1634                 .cb     = str_prio_cb,
1635                 .help   = "Set job IO priority value",
1636                 .minval = 0,
1637                 .maxval = 7,
1638         },
1639         {
1640                 .name   = "prioclass",
1641                 .type   = FIO_OPT_INT,
1642                 .cb     = str_prioclass_cb,
1643                 .help   = "Set job IO priority class",
1644                 .minval = 0,
1645                 .maxval = 3,
1646         },
1647 #endif
1648         {
1649                 .name   = "thinktime",
1650                 .type   = FIO_OPT_INT,
1651                 .off1   = td_var_offset(thinktime),
1652                 .help   = "Idle time between IO buffers (usec)",
1653                 .def    = "0",
1654         },
1655         {
1656                 .name   = "thinktime_spin",
1657                 .type   = FIO_OPT_INT,
1658                 .off1   = td_var_offset(thinktime_spin),
1659                 .help   = "Start think time by spinning this amount (usec)",
1660                 .def    = "0",
1661                 .parent = "thinktime",
1662         },
1663         {
1664                 .name   = "thinktime_blocks",
1665                 .type   = FIO_OPT_INT,
1666                 .off1   = td_var_offset(thinktime_blocks),
1667                 .help   = "IO buffer period between 'thinktime'",
1668                 .def    = "1",
1669                 .parent = "thinktime",
1670         },
1671         {
1672                 .name   = "rate",
1673                 .type   = FIO_OPT_INT,
1674                 .off1   = td_var_offset(rate[0]),
1675                 .off2   = td_var_offset(rate[1]),
1676                 .help   = "Set bandwidth rate",
1677         },
1678         {
1679                 .name   = "ratemin",
1680                 .type   = FIO_OPT_INT,
1681                 .off1   = td_var_offset(ratemin[0]),
1682                 .off2   = td_var_offset(ratemin[1]),
1683                 .help   = "Job must meet this rate or it will be shutdown",
1684                 .parent = "rate",
1685         },
1686         {
1687                 .name   = "rate_iops",
1688                 .type   = FIO_OPT_INT,
1689                 .off1   = td_var_offset(rate_iops[0]),
1690                 .off2   = td_var_offset(rate_iops[1]),
1691                 .help   = "Limit IO used to this number of IO operations/sec",
1692         },
1693         {
1694                 .name   = "rate_iops_min",
1695                 .type   = FIO_OPT_INT,
1696                 .off1   = td_var_offset(rate_iops_min[0]),
1697                 .off2   = td_var_offset(rate_iops_min[1]),
1698                 .help   = "Job must meet this rate or it will be shut down",
1699                 .parent = "rate_iops",
1700         },
1701         {
1702                 .name   = "ratecycle",
1703                 .type   = FIO_OPT_INT,
1704                 .off1   = td_var_offset(ratecycle),
1705                 .help   = "Window average for rate limits (msec)",
1706                 .def    = "1000",
1707                 .parent = "rate",
1708         },
1709         {
1710                 .name   = "invalidate",
1711                 .type   = FIO_OPT_BOOL,
1712                 .off1   = td_var_offset(invalidate_cache),
1713                 .help   = "Invalidate buffer/page cache prior to running job",
1714                 .def    = "1",
1715         },
1716         {
1717                 .name   = "sync",
1718                 .type   = FIO_OPT_BOOL,
1719                 .off1   = td_var_offset(sync_io),
1720                 .help   = "Use O_SYNC for buffered writes",
1721                 .def    = "0",
1722                 .parent = "buffered",
1723         },
1724         {
1725                 .name   = "bwavgtime",
1726                 .type   = FIO_OPT_INT,
1727                 .off1   = td_var_offset(bw_avg_time),
1728                 .help   = "Time window over which to calculate bandwidth"
1729                           " (msec)",
1730                 .def    = "500",
1731         },
1732         {
1733                 .name   = "create_serialize",
1734                 .type   = FIO_OPT_BOOL,
1735                 .off1   = td_var_offset(create_serialize),
1736                 .help   = "Serialize creating of job files",
1737                 .def    = "1",
1738         },
1739         {
1740                 .name   = "create_fsync",
1741                 .type   = FIO_OPT_BOOL,
1742                 .off1   = td_var_offset(create_fsync),
1743                 .help   = "fsync file after creation",
1744                 .def    = "1",
1745         },
1746         {
1747                 .name   = "create_on_open",
1748                 .type   = FIO_OPT_BOOL,
1749                 .off1   = td_var_offset(create_on_open),
1750                 .help   = "Create files when they are opened for IO",
1751                 .def    = "0",
1752         },
1753         {
1754                 .name   = "pre_read",
1755                 .type   = FIO_OPT_BOOL,
1756                 .off1   = td_var_offset(pre_read),
1757                 .help   = "Pre-read files before starting official testing",
1758                 .def    = "0",
1759         },
1760         {
1761                 .name   = "cpuload",
1762                 .type   = FIO_OPT_INT,
1763                 .off1   = td_var_offset(cpuload),
1764                 .help   = "Use this percentage of CPU",
1765         },
1766         {
1767                 .name   = "cpuchunks",
1768                 .type   = FIO_OPT_INT,
1769                 .off1   = td_var_offset(cpucycle),
1770                 .help   = "Length of the CPU burn cycles (usecs)",
1771                 .def    = "50000",
1772                 .parent = "cpuload",
1773         },
1774 #ifdef FIO_HAVE_CPU_AFFINITY
1775         {
1776                 .name   = "cpumask",
1777                 .type   = FIO_OPT_INT,
1778                 .cb     = str_cpumask_cb,
1779                 .help   = "CPU affinity mask",
1780         },
1781         {
1782                 .name   = "cpus_allowed",
1783                 .type   = FIO_OPT_STR,
1784                 .cb     = str_cpus_allowed_cb,
1785                 .help   = "Set CPUs allowed",
1786         },
1787 #endif
1788         {
1789                 .name   = "end_fsync",
1790                 .type   = FIO_OPT_BOOL,
1791                 .off1   = td_var_offset(end_fsync),
1792                 .help   = "Include fsync at the end of job",
1793                 .def    = "0",
1794         },
1795         {
1796                 .name   = "fsync_on_close",
1797                 .type   = FIO_OPT_BOOL,
1798                 .off1   = td_var_offset(fsync_on_close),
1799                 .help   = "fsync files on close",
1800                 .def    = "0",
1801         },
1802         {
1803                 .name   = "unlink",
1804                 .type   = FIO_OPT_BOOL,
1805                 .off1   = td_var_offset(unlink),
1806                 .help   = "Unlink created files after job has completed",
1807                 .def    = "0",
1808         },
1809         {
1810                 .name   = "exitall",
1811                 .type   = FIO_OPT_STR_SET,
1812                 .cb     = str_exitall_cb,
1813                 .help   = "Terminate all jobs when one exits",
1814         },
1815         {
1816                 .name   = "stonewall",
1817                 .type   = FIO_OPT_STR_SET,
1818                 .off1   = td_var_offset(stonewall),
1819                 .help   = "Insert a hard barrier between this job and previous",
1820         },
1821         {
1822                 .name   = "new_group",
1823                 .type   = FIO_OPT_STR_SET,
1824                 .off1   = td_var_offset(new_group),
1825                 .help   = "Mark the start of a new group (for reporting)",
1826         },
1827         {
1828                 .name   = "thread",
1829                 .type   = FIO_OPT_STR_SET,
1830                 .off1   = td_var_offset(use_thread),
1831                 .help   = "Use threads instead of forks",
1832         },
1833         {
1834                 .name   = "write_bw_log",
1835                 .type   = FIO_OPT_STR,
1836                 .off1   = td_var_offset(write_bw_log),
1837                 .cb     = str_write_bw_log_cb,
1838                 .help   = "Write log of bandwidth during run",
1839         },
1840         {
1841                 .name   = "write_lat_log",
1842                 .type   = FIO_OPT_STR,
1843                 .off1   = td_var_offset(write_lat_log),
1844                 .cb     = str_write_lat_log_cb,
1845                 .help   = "Write log of latency during run",
1846         },
1847         {
1848                 .name   = "hugepage-size",
1849                 .type   = FIO_OPT_INT,
1850                 .off1   = td_var_offset(hugepage_size),
1851                 .help   = "When using hugepages, specify size of each page",
1852                 .def    = __stringify(FIO_HUGE_PAGE),
1853         },
1854         {
1855                 .name   = "group_reporting",
1856                 .type   = FIO_OPT_STR_SET,
1857                 .off1   = td_var_offset(group_reporting),
1858                 .help   = "Do reporting on a per-group basis",
1859         },
1860         {
1861                 .name   = "zero_buffers",
1862                 .type   = FIO_OPT_STR_SET,
1863                 .off1   = td_var_offset(zero_buffers),
1864                 .help   = "Init IO buffers to all zeroes",
1865         },
1866         {
1867                 .name   = "refill_buffers",
1868                 .type   = FIO_OPT_STR_SET,
1869                 .off1   = td_var_offset(refill_buffers),
1870                 .help   = "Refill IO buffers on every IO submit",
1871         },
1872 #ifdef FIO_HAVE_DISK_UTIL
1873         {
1874                 .name   = "disk_util",
1875                 .type   = FIO_OPT_BOOL,
1876                 .off1   = td_var_offset(do_disk_util),
1877                 .help   = "Log disk utilization statistics",
1878                 .def    = "1",
1879         },
1880 #endif
1881         {
1882                 .name   = "gtod_reduce",
1883                 .type   = FIO_OPT_BOOL,
1884                 .help   = "Greatly reduce number of gettimeofday() calls",
1885                 .cb     = str_gtod_reduce_cb,
1886                 .def    = "0",
1887         },
1888         {
1889                 .name   = "disable_lat",
1890                 .type   = FIO_OPT_BOOL,
1891                 .off1   = td_var_offset(disable_lat),
1892                 .help   = "Disable latency numbers",
1893                 .parent = "gtod_reduce",
1894                 .def    = "0",
1895         },
1896         {
1897                 .name   = "disable_clat",
1898                 .type   = FIO_OPT_BOOL,
1899                 .off1   = td_var_offset(disable_clat),
1900                 .help   = "Disable completion latency numbers",
1901                 .parent = "gtod_reduce",
1902                 .def    = "0",
1903         },
1904         {
1905                 .name   = "disable_slat",
1906                 .type   = FIO_OPT_BOOL,
1907                 .off1   = td_var_offset(disable_slat),
1908                 .help   = "Disable submission latency numbers",
1909                 .parent = "gtod_reduce",
1910                 .def    = "0",
1911         },
1912         {
1913                 .name   = "disable_bw_measurement",
1914                 .type   = FIO_OPT_BOOL,
1915                 .off1   = td_var_offset(disable_bw),
1916                 .help   = "Disable bandwidth logging",
1917                 .parent = "gtod_reduce",
1918                 .def    = "0",
1919         },
1920         {
1921                 .name   = "gtod_cpu",
1922                 .type   = FIO_OPT_INT,
1923                 .cb     = str_gtod_cpu_cb,
1924                 .help   = "Set up dedicated gettimeofday() thread on this CPU",
1925                 .verify = gtod_cpu_verify,
1926         },
1927         {
1928                 .name   = "continue_on_error",
1929                 .type   = FIO_OPT_BOOL,
1930                 .off1   = td_var_offset(continue_on_error),
1931                 .help   = "Continue on non-fatal errors during IO",
1932                 .def    = "0",
1933         },
1934         {
1935                 .name   = "profile",
1936                 .type   = FIO_OPT_STR_STORE,
1937                 .off1   = td_var_offset(profile),
1938                 .help   = "Select a specific builtin performance test",
1939         },
1940         {
1941                 .name   = "cgroup",
1942                 .type   = FIO_OPT_STR_STORE,
1943                 .off1   = td_var_offset(cgroup),
1944                 .help   = "Add job to cgroup of this name",
1945         },
1946         {
1947                 .name   = "cgroup_weight",
1948                 .type   = FIO_OPT_INT,
1949                 .off1   = td_var_offset(cgroup_weight),
1950                 .help   = "Use given weight for cgroup",
1951                 .minval = 100,
1952                 .maxval = 1000,
1953         },
1954         {
1955                 .name   = "cgroup_nodelete",
1956                 .type   = FIO_OPT_BOOL,
1957                 .off1   = td_var_offset(cgroup_nodelete),
1958                 .help   = "Do not delete cgroups after job completion",
1959                 .def    = "0",
1960         },
1961         {
1962                 .name   = "uid",
1963                 .type   = FIO_OPT_INT,
1964                 .off1   = td_var_offset(uid),
1965                 .help   = "Run job with this user ID",
1966         },
1967         {
1968                 .name   = "gid",
1969                 .type   = FIO_OPT_INT,
1970                 .off1   = td_var_offset(gid),
1971                 .help   = "Run job with this group ID",
1972         },
1973         {
1974                 .name = NULL,
1975         },
1976 };
1977
1978 static void add_to_lopt(struct option *lopt, struct fio_option *o,
1979                         const char *name)
1980 {
1981         lopt->name = (char *) name;
1982         lopt->val = FIO_GETOPT_JOB;
1983         if (o->type == FIO_OPT_STR_SET)
1984                 lopt->has_arg = no_argument;
1985         else
1986                 lopt->has_arg = required_argument;
1987 }
1988
1989 void fio_options_dup_and_init(struct option *long_options)
1990 {
1991         struct fio_option *o;
1992         unsigned int i;
1993
1994         options_init(options);
1995
1996         i = 0;
1997         while (long_options[i].name)
1998                 i++;
1999
2000         o = &options[0];
2001         while (o->name) {
2002                 add_to_lopt(&long_options[i], o, o->name);
2003                 if (o->alias) {
2004                         i++;
2005                         add_to_lopt(&long_options[i], o, o->alias);
2006                 }
2007
2008                 i++;
2009                 o++;
2010                 assert(i < FIO_NR_OPTIONS);
2011         }
2012 }
2013
2014 struct fio_keyword {
2015         const char *word;
2016         const char *desc;
2017         char *replace;
2018 };
2019
2020 static struct fio_keyword fio_keywords[] = {
2021         {
2022                 .word   = "$pagesize",
2023                 .desc   = "Page size in the system",
2024         },
2025         {
2026                 .word   = "$mb_memory",
2027                 .desc   = "Megabytes of memory online",
2028         },
2029         {
2030                 .word   = "$ncpus",
2031                 .desc   = "Number of CPUs online in the system",
2032         },
2033         {
2034                 .word   = NULL,
2035         },
2036 };
2037
2038 void fio_keywords_init(void)
2039 {
2040         unsigned long long mb_memory;
2041         char buf[128];
2042         long l;
2043
2044         sprintf(buf, "%lu", page_size);
2045         fio_keywords[0].replace = strdup(buf);
2046
2047         mb_memory = os_phys_mem() / page_size;
2048         sprintf(buf, "%llu", mb_memory);
2049         fio_keywords[1].replace = strdup(buf);
2050
2051         l = sysconf(_SC_NPROCESSORS_ONLN);
2052         sprintf(buf, "%lu", l);
2053         fio_keywords[2].replace = strdup(buf);
2054 }
2055
2056 #define BC_APP          "bc"
2057
2058 static char *bc_calc(char *str)
2059 {
2060         char *buf, *tmp, opt[80];
2061         FILE *f;
2062         int ret;
2063
2064         /*
2065          * No math, just return string
2066          */
2067         if (!strchr(str, '+') && !strchr(str, '-') && !strchr(str, '*') &&
2068             !strchr(str, '/'))
2069                 return str;
2070
2071         /*
2072          * Split option from value, we only need to calculate the value
2073          */
2074         tmp = strchr(str, '=');
2075         if (!tmp)
2076                 return str;
2077
2078         tmp++;
2079         memset(opt, 0, sizeof(opt));
2080         strncpy(opt, str, tmp - str);
2081
2082         buf = malloc(128);
2083
2084         sprintf(buf, "which %s > /dev/null", BC_APP);
2085         if (system(buf)) {
2086                 log_err("fio: bc is needed for performing math\n");
2087                 free(buf);
2088                 return NULL;
2089         }
2090
2091         sprintf(buf, "echo %s | %s", tmp, BC_APP);
2092         f = popen(buf, "r");
2093         if (!f) {
2094                 free(buf);
2095                 return NULL;
2096         }
2097
2098         ret = fread(buf, 1, 128, f);
2099         if (ret <= 0) {
2100                 free(buf);
2101                 return NULL;
2102         }
2103
2104         buf[ret - 1] = '\0';
2105         strcat(opt, buf);
2106         strcpy(buf, opt);
2107         pclose(f);
2108         free(str);
2109         return buf;
2110 }
2111
2112 /*
2113  * Look for reserved variable names and replace them with real values
2114  */
2115 static char *fio_keyword_replace(char *opt)
2116 {
2117         char *s;
2118         int i;
2119
2120         for (i = 0; fio_keywords[i].word != NULL; i++) {
2121                 struct fio_keyword *kw = &fio_keywords[i];
2122
2123                 while ((s = strstr(opt, kw->word)) != NULL) {
2124                         char *new = malloc(strlen(opt) + 1);
2125                         char *o_org = opt;
2126                         int olen = s - opt;
2127                         int len;
2128
2129                         /*
2130                          * Copy part of the string before the keyword and
2131                          * sprintf() the replacement after it.
2132                          */
2133                         memcpy(new, opt, olen);
2134                         len = sprintf(new + olen, "%s", kw->replace);
2135
2136                         /*
2137                          * If there's more in the original string, copy that
2138                          * in too
2139                          */
2140                         opt += strlen(kw->word) + olen;
2141                         if (strlen(opt))
2142                                 memcpy(new + olen + len, opt, opt - o_org - 1);
2143
2144                         /*
2145                          * replace opt and free the old opt
2146                          */
2147                         opt = new;
2148                         //free(o_org);
2149
2150                         /*
2151                          * Check for potential math and invoke bc, if possible
2152                          */
2153                         opt = bc_calc(opt);
2154                 }
2155         }
2156
2157         return opt;
2158 }
2159
2160 int fio_options_parse(struct thread_data *td, char **opts, int num_opts)
2161 {
2162         int i, ret;
2163
2164         sort_options(opts, options, num_opts);
2165
2166         for (ret = 0, i = 0; i < num_opts; i++) {
2167                 opts[i] = fio_keyword_replace(opts[i]);
2168                 ret |= parse_option(opts[i], options, td);
2169         }
2170
2171         return ret;
2172 }
2173
2174 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
2175 {
2176         return parse_cmd_option(opt, val, options, td);
2177 }
2178
2179 void fio_fill_default_options(struct thread_data *td)
2180 {
2181         fill_default_options(td, options);
2182 }
2183
2184 int fio_show_option_help(const char *opt)
2185 {
2186         return show_cmd_help(options, opt);
2187 }
2188
2189 static void __options_mem(struct thread_data *td, int alloc)
2190 {
2191         struct thread_options *o = &td->o;
2192         struct fio_option *opt;
2193         char **ptr;
2194         int i;
2195
2196         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
2197                 if (opt->type != FIO_OPT_STR_STORE)
2198                         continue;
2199
2200                 ptr = (void *) o + opt->off1;
2201                 if (*ptr) {
2202                         if (alloc)
2203                                 *ptr = strdup(*ptr);
2204                         else {
2205                                 free(*ptr);
2206                                 *ptr = NULL;
2207                         }
2208                 }
2209         }
2210 }
2211
2212 /*
2213  * dupe FIO_OPT_STR_STORE options
2214  */
2215 void options_mem_dupe(struct thread_data *td)
2216 {
2217         __options_mem(td, 1);
2218 }
2219
2220 void options_mem_free(struct thread_data fio_unused *td)
2221 {
2222 #if 0
2223         __options_mem(td, 0);
2224 #endif
2225 }
2226
2227 unsigned int fio_get_kb_base(void *data)
2228 {
2229         struct thread_data *td = data;
2230         unsigned int kb_base = 0;
2231
2232         if (td)
2233                 kb_base = td->o.kb_base;
2234         if (!kb_base)
2235                 kb_base = 1024;
2236
2237         return kb_base;
2238 }
2239
2240 int add_option(struct fio_option *o)
2241 {
2242         struct fio_option *__o;
2243         int opt_index = 0;
2244
2245         __o = options;
2246         while (__o->name) {
2247                 opt_index++;
2248                 __o++;
2249         }
2250
2251         memcpy(&options[opt_index], o, sizeof(*o));
2252         return 0;
2253 }
2254
2255 void invalidate_profile_options(const char *prof_name)
2256 {
2257         struct fio_option *o;
2258
2259         o = options;
2260         while (o->name) {
2261                 if (o->prof_name && !strcmp(o->prof_name, prof_name)) {
2262                         o->type = FIO_OPT_INVALID;
2263                         o->prof_name = NULL;
2264                 }
2265                 o++;
2266         }
2267 }
2268
2269 void add_opt_posval(const char *optname, const char *ival, const char *help)
2270 {
2271         struct fio_option *o;
2272         unsigned int i;
2273
2274         o = find_option(options, optname);
2275         if (!o)
2276                 return;
2277
2278         for (i = 0; i < PARSE_MAX_VP; i++) {
2279                 if (o->posval[i].ival)
2280                         continue;
2281
2282                 o->posval[i].ival = ival;
2283                 o->posval[i].help = help;
2284                 break;
2285         }
2286 }
2287
2288 void del_opt_posval(const char *optname, const char *ival)
2289 {
2290         struct fio_option *o;
2291         unsigned int i;
2292
2293         o = find_option(options, optname);
2294         if (!o)
2295                 return;
2296
2297         for (i = 0; i < PARSE_MAX_VP; i++) {
2298                 if (!o->posval[i].ival)
2299                         continue;
2300                 if (strcmp(o->posval[i].ival, ival))
2301                         continue;
2302
2303                 o->posval[i].ival = NULL;
2304                 o->posval[i].help = NULL;
2305         }
2306 }