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