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
   9 #include "fio.h"
  10 #include "parse.h"
  11
  12 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  13
  14 /*
  15  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  16  */
  17 static char *get_opt_postfix(const char *str)
  18 {
  19         char *p = strstr(str, ":");
  20
  21         if (!p)
  22                 return NULL;
  23
  24         p++;
  25         strip_blank_front(&p);
  26         strip_blank_end(p);
  27         return strdup(p);
  28 }
  29
  30 static int str_rw_cb(void *data, const char *str)
  31 {
  32         struct thread_data *td = data;
  33         char *nr = get_opt_postfix(str);
  34
  35         td->o.ddir_nr = 0;
  36         if (nr)
  37                 td->o.ddir_nr = atoi(nr);
  38
  39         printf("ddir_nr=%d\n", td->o.ddir_nr);
  40
  41         return 0;
  42 }
  43
  44 static int str_mem_cb(void *data, const char *mem)
  45 {
  46         struct thread_data *td = data;
  47
  48         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
  49                 td->mmapfile = get_opt_postfix(mem);
  50                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
  51                         log_err("fio: mmaphuge:/path/to/file\n");
  52                         return 1;
  53                 }
  54         }
  55
  56         return 0;
  57 }
  58
  59 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
  60 {
  61         mlock_size = *val;
  62         return 0;
  63 }
  64
  65 #ifdef FIO_HAVE_IOPRIO
  66 static int str_prioclass_cb(void *data, unsigned int *val)
  67 {
  68         struct thread_data *td = data;
  69
  70         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
  71         return 0;
  72 }
  73
  74 static int str_prio_cb(void *data, unsigned int *val)
  75 {
  76         struct thread_data *td = data;
  77
  78         td->ioprio |= *val;
  79         return 0;
  80 }
  81 #endif
  82
  83 static int str_exitall_cb(void)
  84 {
  85         exitall_on_terminate = 1;
  86         return 0;
  87 }
  88
  89 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
  90 {
  91 #ifdef FIO_HAVE_CPU_AFFINITY
  92         unsigned int i;
  93
  94         CPU_ZERO(&cpumask);
  95
  96         for (i = 0; i < sizeof(int) * 8; i++) {
  97                 if ((1 << i) & cpu)
  98                         CPU_SET(i, &cpumask);
  99         }
 100 #endif
 101 }
 102
 103 static int str_cpumask_cb(void *data, unsigned int *val)
 104 {
 105         struct thread_data *td = data;
 106
 107         fill_cpu_mask(td->o.cpumask, *val);
 108         return 0;
 109 }
 110
 111 static int str_fst_cb(void *data, const char *str)
 112 {
 113         struct thread_data *td = data;
 114         char *nr = get_opt_postfix(str);
 115
 116         td->file_service_nr = 1;
 117         if (nr)
 118                 td->file_service_nr = atoi(nr);
 119
 120         return 0;
 121 }
 122
 123 static int str_filename_cb(void *data, const char *input)
 124 {
 125         struct thread_data *td = data;
 126         char *fname, *str, *p;
 127
 128         p = str = strdup(input);
 129
 130         strip_blank_front(&str);
 131         strip_blank_end(str);
 132
 133         if (!td->files_index)
 134                 td->o.nr_files = 0;
 135
 136         while ((fname = strsep(&str, ":")) != NULL) {
 137                 if (!strlen(fname))
 138                         break;
 139                 add_file(td, fname);
 140                 td->o.nr_files++;
 141         }
 142
 143         free(p);
 144         return 0;
 145 }
 146
 147 static int str_directory_cb(void *data, const char fio_unused *str)
 148 {
 149         struct thread_data *td = data;
 150         struct stat sb;
 151
 152         if (lstat(td->o.directory, &sb) < 0) {
 153                 log_err("fio: %s is not a directory\n", td->o.directory);
 154                 td_verror(td, errno, "lstat");
 155                 return 1;
 156         }
 157         if (!S_ISDIR(sb.st_mode)) {
 158                 log_err("fio: %s is not a directory\n", td->o.directory);
 159                 return 1;
 160         }
 161
 162         return 0;
 163 }
 164
 165 static int str_opendir_cb(void *data, const char fio_unused *str)
 166 {
 167         struct thread_data *td = data;
 168
 169         if (!td->files_index)
 170                 td->o.nr_files = 0;
 171
 172         return add_dir_files(td, td->o.opendir);
 173 }
 174
 175
 176 #define __stringify_1(x)        #x
 177 #define __stringify(x)          __stringify_1(x)
 178
 179 /*
 180  * Map of job/command line options
 181  */
 182 static struct fio_option options[] = {
 183         {
 184                 .name   = "description",
 185                 .type   = FIO_OPT_STR_STORE,
 186                 .off1   = td_var_offset(description),
 187                 .help   = "Text job description",
 188         },
 189         {
 190                 .name   = "name",
 191                 .type   = FIO_OPT_STR_STORE,
 192                 .off1   = td_var_offset(name),
 193                 .help   = "Name of this job",
 194         },
 195         {
 196                 .name   = "directory",
 197                 .type   = FIO_OPT_STR_STORE,
 198                 .off1   = td_var_offset(directory),
 199                 .cb     = str_directory_cb,
 200                 .help   = "Directory to store files in",
 201         },
 202         {
 203                 .name   = "filename",
 204                 .type   = FIO_OPT_STR_STORE,
 205                 .off1   = td_var_offset(filename),
 206                 .cb     = str_filename_cb,
 207                 .help   = "File(s) to use for the workload",
 208         },
 209         {
 210                 .name   = "opendir",
 211                 .type   = FIO_OPT_STR_STORE,
 212                 .off1   = td_var_offset(opendir),
 213                 .cb     = str_opendir_cb,
 214                 .help   = "Recursively add files from this directory and down",
 215         },
 216         {
 217                 .name   = "rw",
 218                 .alias  = "readwrite",
 219                 .type   = FIO_OPT_STR,
 220                 .cb     = str_rw_cb,
 221                 .off1   = td_var_offset(td_ddir),
 222                 .help   = "IO direction",
 223                 .def    = "read",
 224                 .posval = {
 225                           { .ival = "read",
 226                             .oval = TD_DDIR_READ,
 227                             .help = "Sequential read",
 228                           },
 229                           { .ival = "write",
 230                             .oval = TD_DDIR_WRITE,
 231                             .help = "Sequential write",
 232                           },
 233                           { .ival = "randread",
 234                             .oval = TD_DDIR_RANDREAD,
 235                             .help = "Random read",
 236                           },
 237                           { .ival = "randwrite",
 238                             .oval = TD_DDIR_RANDWRITE,
 239                             .help = "Random write",
 240                           },
 241                           { .ival = "rw",
 242                             .oval = TD_DDIR_RW,
 243                             .help = "Sequential read and write mix",
 244                           },
 245                           { .ival = "randrw",
 246                             .oval = TD_DDIR_RANDRW,
 247                             .help = "Random read and write mix"
 248                           },
 249                 },
 250         },
 251         {
 252                 .name   = "ioengine",
 253                 .type   = FIO_OPT_STR_STORE,
 254                 .off1   = td_var_offset(ioengine),
 255                 .help   = "IO engine to use",
 256                 .def    = "sync",
 257                 .posval = {
 258                           { .ival = "sync",
 259                             .help = "Use read/write",
 260                           },
 261 #ifdef FIO_HAVE_LIBAIO
 262                           { .ival = "libaio",
 263                             .help = "Linux native asynchronous IO",
 264                           },
 265 #endif
 266 #ifdef FIO_HAVE_POSIXAIO
 267                           { .ival = "posixaio",
 268                             .help = "POSIX asynchronous IO",
 269                           },
 270 #endif
 271                           { .ival = "mmap",
 272                             .help = "Memory mapped IO",
 273                           },
 274 #ifdef FIO_HAVE_SPLICE
 275                           { .ival = "splice",
 276                             .help = "splice/vmsplice based IO",
 277                           },
 278 #endif
 279 #ifdef FIO_HAVE_SGIO
 280                           { .ival = "sg",
 281                             .help = "SCSI generic v3 IO",
 282                           },
 283 #endif
 284                           { .ival = "null",
 285                             .help = "Testing engine (no data transfer)",
 286                           },
 287                           { .ival = "net",
 288                             .help = "Network IO",
 289                           },
 290 #ifdef FIO_HAVE_SYSLET
 291                           { .ival = "syslet-rw",
 292                             .help = "syslet enabled async pread/pwrite IO",
 293                           },
 294 #endif
 295                           { .ival = "cpuio",
 296                             .help = "CPU cycler burner engine",
 297                           },
 298 #ifdef FIO_HAVE_GUASI
 299                           { .ival = "guasi",
 300                             .help = "GUASI IO engine",
 301                           },
 302 #endif
 303                           { .ival = "external",
 304                             .help = "Load external engine (append name)",
 305                           },
 306                 },
 307         },
 308         {
 309                 .name   = "iodepth",
 310                 .type   = FIO_OPT_INT,
 311                 .off1   = td_var_offset(iodepth),
 312                 .help   = "Amount of IO buffers to keep in flight",
 313                 .def    = "1",
 314         },
 315         {
 316                 .name   = "iodepth_batch",
 317                 .type   = FIO_OPT_INT,
 318                 .off1   = td_var_offset(iodepth_batch),
 319                 .help   = "Number of IO to submit in one go",
 320         },
 321         {
 322                 .name   = "iodepth_low",
 323                 .type   = FIO_OPT_INT,
 324                 .off1   = td_var_offset(iodepth_low),
 325                 .help   = "Low water mark for queuing depth",
 326         },
 327         {
 328                 .name   = "size",
 329                 .type   = FIO_OPT_STR_VAL,
 330                 .off1   = td_var_offset(size),
 331                 .help   = "Total size of device or files",
 332         },
 333         {
 334                 .name   = "filesize",
 335                 .type   = FIO_OPT_STR_VAL,
 336                 .off1   = td_var_offset(file_size_low),
 337                 .off2   = td_var_offset(file_size_high),
 338                 .help   = "Size of individual files",
 339         },
 340         {
 341                 .name   = "bs",
 342                 .alias  = "blocksize",
 343                 .type   = FIO_OPT_STR_VAL_INT,
 344                 .off1   = td_var_offset(bs[DDIR_READ]),
 345                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 346                 .help   = "Block size unit",
 347                 .def    = "4k",
 348         },
 349         {
 350                 .name   = "bsrange",
 351                 .alias  = "blocksize_range",
 352                 .type   = FIO_OPT_RANGE,
 353                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 354                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 355                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 356                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 357                 .help   = "Set block size range (in more detail than bs)",
 358         },
 359         {
 360                 .name   = "bs_unaligned",
 361                 .alias  = "blocksize_unaligned",
 362                 .type   = FIO_OPT_STR_SET,
 363                 .off1   = td_var_offset(bs_unaligned),
 364                 .help   = "Don't sector align IO buffer sizes",
 365         },
 366         {
 367                 .name   = "offset",
 368                 .type   = FIO_OPT_STR_VAL,
 369                 .off1   = td_var_offset(start_offset),
 370                 .help   = "Start IO from this offset",
 371                 .def    = "0",
 372         },
 373         {
 374                 .name   = "randrepeat",
 375                 .type   = FIO_OPT_BOOL,
 376                 .off1   = td_var_offset(rand_repeatable),
 377                 .help   = "Use repeatable random IO pattern",
 378                 .def    = "1",
 379         },
 380         {
 381                 .name   = "norandommap",
 382                 .type   = FIO_OPT_STR_SET,
 383                 .off1   = td_var_offset(norandommap),
 384                 .help   = "Accept potential duplicate random blocks",
 385         },
 386         {
 387                 .name   = "nrfiles",
 388                 .type   = FIO_OPT_INT,
 389                 .off1   = td_var_offset(nr_files),
 390                 .help   = "Split job workload between this number of files",
 391                 .def    = "1",
 392         },
 393         {
 394                 .name   = "openfiles",
 395                 .type   = FIO_OPT_INT,
 396                 .off1   = td_var_offset(open_files),
 397                 .help   = "Number of files to keep open at the same time",
 398         },
 399         {
 400                 .name   = "file_service_type",
 401                 .type   = FIO_OPT_STR,
 402                 .cb     = str_fst_cb,
 403                 .off1   = td_var_offset(file_service_type),
 404                 .help   = "How to select which file to service next",
 405                 .def    = "roundrobin",
 406                 .posval = {
 407                           { .ival = "random",
 408                             .oval = FIO_FSERVICE_RANDOM,
 409                             .help = "Choose a file at random",
 410                           },
 411                           { .ival = "roundrobin",
 412                             .oval = FIO_FSERVICE_RR,
 413                             .help = "Round robin select files",
 414                           },
 415                 },
 416         },
 417         {
 418                 .name   = "fsync",
 419                 .type   = FIO_OPT_INT,
 420                 .off1   = td_var_offset(fsync_blocks),
 421                 .help   = "Issue fsync for writes every given number of blocks",
 422                 .def    = "0",
 423         },
 424         {
 425                 .name   = "direct",
 426                 .type   = FIO_OPT_BOOL,
 427                 .off1   = td_var_offset(odirect),
 428                 .help   = "Use O_DIRECT IO (negates buffered)",
 429                 .def    = "0",
 430         },
 431         {
 432                 .name   = "buffered",
 433                 .type   = FIO_OPT_BOOL,
 434                 .off1   = td_var_offset(odirect),
 435                 .neg    = 1,
 436                 .help   = "Use buffered IO (negates direct)",
 437                 .def    = "1",
 438         },
 439         {
 440                 .name   = "overwrite",
 441                 .type   = FIO_OPT_BOOL,
 442                 .off1   = td_var_offset(overwrite),
 443                 .help   = "When writing, set whether to overwrite current data",
 444                 .def    = "0",
 445         },
 446         {
 447                 .name   = "loops",
 448                 .type   = FIO_OPT_INT,
 449                 .off1   = td_var_offset(loops),
 450                 .help   = "Number of times to run the job",
 451                 .def    = "1",
 452         },
 453         {
 454                 .name   = "numjobs",
 455                 .type   = FIO_OPT_INT,
 456                 .off1   = td_var_offset(numjobs),
 457                 .help   = "Duplicate this job this many times",
 458                 .def    = "1",
 459         },
 460         {
 461                 .name   = "startdelay",
 462                 .type   = FIO_OPT_INT,
 463                 .off1   = td_var_offset(start_delay),
 464                 .help   = "Only start job when this period has passed",
 465                 .def    = "0",
 466         },
 467         {
 468                 .name   = "runtime",
 469                 .alias  = "timeout",
 470                 .type   = FIO_OPT_STR_VAL_TIME,
 471                 .off1   = td_var_offset(timeout),
 472                 .help   = "Stop workload when this amount of time has passed",
 473                 .def    = "0",
 474         },
 475         {
 476                 .name   = "mem",
 477                 .alias  = "iomem",
 478                 .type   = FIO_OPT_STR,
 479                 .cb     = str_mem_cb,
 480                 .off1   = td_var_offset(mem_type),
 481                 .help   = "Backing type for IO buffers",
 482                 .def    = "malloc",
 483                 .posval = {
 484                           { .ival = "malloc",
 485                             .oval = MEM_MALLOC,
 486                             .help = "Use malloc(3) for IO buffers",
 487                           },
 488                           { .ival = "shm",
 489                             .oval = MEM_SHM,
 490                             .help = "Use shared memory segments for IO buffers",
 491                           },
 492 #ifdef FIO_HAVE_HUGETLB
 493                           { .ival = "shmhuge",
 494                             .oval = MEM_SHMHUGE,
 495                             .help = "Like shm, but use huge pages",
 496                           },
 497 #endif
 498                           { .ival = "mmap",
 499                             .oval = MEM_MMAP,
 500                             .help = "Use mmap(2) (file or anon) for IO buffers",
 501                           },
 502 #ifdef FIO_HAVE_HUGETLB
 503                           { .ival = "mmaphuge",
 504                             .oval = MEM_MMAPHUGE,
 505                             .help = "Like mmap, but use huge pages",
 506                           },
 507 #endif
 508                   },
 509         },
 510         {
 511                 .name   = "verify",
 512                 .type   = FIO_OPT_STR,
 513                 .off1   = td_var_offset(verify),
 514                 .help   = "Verify data written",
 515                 .def    = "0",
 516                 .posval = {
 517                           { .ival = "0",
 518                             .oval = VERIFY_NONE,
 519                             .help = "Don't do IO verification",
 520                           },
 521                           { .ival = "crc32",
 522                             .oval = VERIFY_CRC32,
 523                             .help = "Use crc32 checksums for verification",
 524                           },
 525                           { .ival = "md5",
 526                             .oval = VERIFY_MD5,
 527                             .help = "Use md5 checksums for verification",
 528                           },
 529                 },
 530         },
 531         {
 532                 .name   = "write_iolog",
 533                 .type   = FIO_OPT_STR_STORE,
 534                 .off1   = td_var_offset(write_iolog_file),
 535                 .help   = "Store IO pattern to file",
 536         },
 537         {
 538                 .name   = "read_iolog",
 539                 .type   = FIO_OPT_STR_STORE,
 540                 .off1   = td_var_offset(read_iolog_file),
 541                 .help   = "Playback IO pattern from file",
 542         },
 543         {
 544                 .name   = "exec_prerun",
 545                 .type   = FIO_OPT_STR_STORE,
 546                 .off1   = td_var_offset(exec_prerun),
 547                 .help   = "Execute this file prior to running job",
 548         },
 549         {
 550                 .name   = "exec_postrun",
 551                 .type   = FIO_OPT_STR_STORE,
 552                 .off1   = td_var_offset(exec_postrun),
 553                 .help   = "Execute this file after running job",
 554         },
 555 #ifdef FIO_HAVE_IOSCHED_SWITCH
 556         {
 557                 .name   = "ioscheduler",
 558                 .type   = FIO_OPT_STR_STORE,
 559                 .off1   = td_var_offset(ioscheduler),
 560                 .help   = "Use this IO scheduler on the backing device",
 561         },
 562 #endif
 563         {
 564                 .name   = "zonesize",
 565                 .type   = FIO_OPT_STR_VAL,
 566                 .off1   = td_var_offset(zone_size),
 567                 .help   = "Give size of an IO zone",
 568                 .def    = "0",
 569         },
 570         {
 571                 .name   = "zoneskip",
 572                 .type   = FIO_OPT_STR_VAL,
 573                 .off1   = td_var_offset(zone_skip),
 574                 .help   = "Space between IO zones",
 575                 .def    = "0",
 576         },
 577         {
 578                 .name   = "lockmem",
 579                 .type   = FIO_OPT_STR_VAL,
 580                 .cb     = str_lockmem_cb,
 581                 .help   = "Lock down this amount of memory",
 582                 .def    = "0",
 583         },
 584         {
 585                 .name   = "rwmixcycle",
 586                 .type   = FIO_OPT_INT,
 587                 .off1   = td_var_offset(rwmixcycle),
 588                 .help   = "Cycle period for mixed read/write workloads (msec)",
 589                 .def    = "500",
 590         },
 591         {
 592                 .name   = "rwmixread",
 593                 .type   = FIO_OPT_INT,
 594                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 595                 .maxval = 100,
 596                 .help   = "Percentage of mixed workload that is reads",
 597                 .def    = "50",
 598         },
 599         {
 600                 .name   = "rwmixwrite",
 601                 .type   = FIO_OPT_INT,
 602                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 603                 .maxval = 100,
 604                 .help   = "Percentage of mixed workload that is writes",
 605                 .def    = "50",
 606         },
 607         {
 608                 .name   = "nice",
 609                 .type   = FIO_OPT_INT,
 610                 .off1   = td_var_offset(nice),
 611                 .help   = "Set job CPU nice value",
 612                 .minval = -19,
 613                 .maxval = 20,
 614                 .def    = "0",
 615         },
 616 #ifdef FIO_HAVE_IOPRIO
 617         {
 618                 .name   = "prio",
 619                 .type   = FIO_OPT_INT,
 620                 .cb     = str_prio_cb,
 621                 .help   = "Set job IO priority value",
 622                 .minval = 0,
 623                 .maxval = 7,
 624         },
 625         {
 626                 .name   = "prioclass",
 627                 .type   = FIO_OPT_INT,
 628                 .cb     = str_prioclass_cb,
 629                 .help   = "Set job IO priority class",
 630                 .minval = 0,
 631                 .maxval = 3,
 632         },
 633 #endif
 634         {
 635                 .name   = "thinktime",
 636                 .type   = FIO_OPT_INT,
 637                 .off1   = td_var_offset(thinktime),
 638                 .help   = "Idle time between IO buffers (usec)",
 639                 .def    = "0",
 640         },
 641         {
 642                 .name   = "thinktime_spin",
 643                 .type   = FIO_OPT_INT,
 644                 .off1   = td_var_offset(thinktime_spin),
 645                 .help   = "Start think time by spinning this amount (usec)",
 646                 .def    = "0",
 647         },
 648         {
 649                 .name   = "thinktime_blocks",
 650                 .type   = FIO_OPT_INT,
 651                 .off1   = td_var_offset(thinktime_blocks),
 652                 .help   = "IO buffer period between 'thinktime'",
 653                 .def    = "1",
 654         },
 655         {
 656                 .name   = "rate",
 657                 .type   = FIO_OPT_INT,
 658                 .off1   = td_var_offset(rate),
 659                 .help   = "Set bandwidth rate",
 660         },
 661         {
 662                 .name   = "ratemin",
 663                 .type   = FIO_OPT_INT,
 664                 .off1   = td_var_offset(ratemin),
 665                 .help   = "Job must meet this rate or it will be shutdown",
 666         },
 667         {
 668                 .name   = "rate_iops",
 669                 .type   = FIO_OPT_INT,
 670                 .off1   = td_var_offset(rate_iops),
 671                 .help   = "Limit IO used to this number of IO operations/sec",
 672         },
 673         {
 674                 .name   = "rate_iops_min",
 675                 .type   = FIO_OPT_INT,
 676                 .off1   = td_var_offset(rate_iops_min),
 677                 .help   = "Job must meet this rate or it will be shutdown",
 678         },
 679         {
 680                 .name   = "ratecycle",
 681                 .type   = FIO_OPT_INT,
 682                 .off1   = td_var_offset(ratecycle),
 683                 .help   = "Window average for rate limits (msec)",
 684                 .def    = "1000",
 685         },
 686         {
 687                 .name   = "invalidate",
 688                 .type   = FIO_OPT_BOOL,
 689                 .off1   = td_var_offset(invalidate_cache),
 690                 .help   = "Invalidate buffer/page cache prior to running job",
 691                 .def    = "1",
 692         },
 693         {
 694                 .name   = "sync",
 695                 .type   = FIO_OPT_BOOL,
 696                 .off1   = td_var_offset(sync_io),
 697                 .help   = "Use O_SYNC for buffered writes",
 698                 .def    = "0",
 699         },
 700         {
 701                 .name   = "bwavgtime",
 702                 .type   = FIO_OPT_INT,
 703                 .off1   = td_var_offset(bw_avg_time),
 704                 .help   = "Time window over which to calculate bandwidth (msec)",
 705                 .def    = "500",
 706         },
 707         {
 708                 .name   = "create_serialize",
 709                 .type   = FIO_OPT_BOOL,
 710                 .off1   = td_var_offset(create_serialize),
 711                 .help   = "Serialize creating of job files",
 712                 .def    = "1",
 713         },
 714         {
 715                 .name   = "create_fsync",
 716                 .type   = FIO_OPT_BOOL,
 717                 .off1   = td_var_offset(create_fsync),
 718                 .help   = "Fsync file after creation",
 719                 .def    = "1",
 720         },
 721         {
 722                 .name   = "cpuload",
 723                 .type   = FIO_OPT_INT,
 724                 .off1   = td_var_offset(cpuload),
 725                 .help   = "Use this percentage of CPU",
 726         },
 727         {
 728                 .name   = "cpuchunks",
 729                 .type   = FIO_OPT_INT,
 730                 .off1   = td_var_offset(cpucycle),
 731                 .help   = "Length of the CPU burn cycles (usecs)",
 732                 .def    = "50000",
 733         },
 734 #ifdef FIO_HAVE_CPU_AFFINITY
 735         {
 736                 .name   = "cpumask",
 737                 .type   = FIO_OPT_INT,
 738                 .cb     = str_cpumask_cb,
 739                 .help   = "CPU affinity mask",
 740         },
 741 #endif
 742         {
 743                 .name   = "end_fsync",
 744                 .type   = FIO_OPT_BOOL,
 745                 .off1   = td_var_offset(end_fsync),
 746                 .help   = "Include fsync at the end of job",
 747                 .def    = "0",
 748         },
 749         {
 750                 .name   = "fsync_on_close",
 751                 .type   = FIO_OPT_BOOL,
 752                 .off1   = td_var_offset(fsync_on_close),
 753                 .help   = "fsync files on close",
 754                 .def    = "0",
 755         },
 756         {
 757                 .name   = "unlink",
 758                 .type   = FIO_OPT_BOOL,
 759                 .off1   = td_var_offset(unlink),
 760                 .help   = "Unlink created files after job has completed",
 761                 .def    = "0",
 762         },
 763         {
 764                 .name   = "exitall",
 765                 .type   = FIO_OPT_STR_SET,
 766                 .cb     = str_exitall_cb,
 767                 .help   = "Terminate all jobs when one exits",
 768         },
 769         {
 770                 .name   = "stonewall",
 771                 .type   = FIO_OPT_STR_SET,
 772                 .off1   = td_var_offset(stonewall),
 773                 .help   = "Insert a hard barrier between this job and previous",
 774         },
 775         {
 776                 .name   = "new_group",
 777                 .type   = FIO_OPT_STR_SET,
 778                 .off1   = td_var_offset(new_group),
 779                 .help   = "Mark the start of a new group (for reporting)",
 780         },
 781         {
 782                 .name   = "thread",
 783                 .type   = FIO_OPT_STR_SET,
 784                 .off1   = td_var_offset(use_thread),
 785                 .help   = "Use threads instead of forks",
 786         },
 787         {
 788                 .name   = "write_bw_log",
 789                 .type   = FIO_OPT_STR_SET,
 790                 .off1   = td_var_offset(write_bw_log),
 791                 .help   = "Write log of bandwidth during run",
 792         },
 793         {
 794                 .name   = "write_lat_log",
 795                 .type   = FIO_OPT_STR_SET,
 796                 .off1   = td_var_offset(write_lat_log),
 797                 .help   = "Write log of latency during run",
 798         },
 799         {
 800                 .name   = "hugepage-size",
 801                 .type   = FIO_OPT_STR_VAL,
 802                 .off1   = td_var_offset(hugepage_size),
 803                 .help   = "When using hugepages, specify size of each page",
 804                 .def    = __stringify(FIO_HUGE_PAGE),
 805         },
 806         {
 807                 .name   = "group_reporting",
 808                 .type   = FIO_OPT_STR_SET,
 809                 .off1   = td_var_offset(group_reporting),
 810                 .help   = "Do reporting on a per-group basis",
 811         },
 812         {
 813                 .name = NULL,
 814         },
 815 };
 816
 817 void fio_options_dup_and_init(struct option *long_options)
 818 {
 819         struct fio_option *o;
 820         unsigned int i;
 821
 822         options_init(options);
 823
 824         i = 0;
 825         while (long_options[i].name)
 826                 i++;
 827
 828         o = &options[0];
 829         while (o->name) {
 830                 long_options[i].name = o->name;
 831                 long_options[i].val = FIO_GETOPT_JOB;
 832                 if (o->type == FIO_OPT_STR_SET)
 833                         long_options[i].has_arg = no_argument;
 834                 else
 835                         long_options[i].has_arg = required_argument;
 836
 837                 i++;
 838                 o++;
 839                 assert(i < FIO_NR_OPTIONS);
 840         }
 841 }
 842
 843 int fio_option_parse(struct thread_data *td, const char *opt)
 844 {
 845         return parse_option(opt, options, td);
 846 }
 847
 848 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
 849 {
 850         return parse_cmd_option(opt, val, options, td);
 851 }
 852
 853 void fio_fill_default_options(struct thread_data *td)
 854 {
 855         fill_default_options(td, options);
 856 }
 857
 858 int fio_show_option_help(const char *opt)
 859 {
 860         return show_cmd_help(options, opt);
 861 }