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   = "fadvise_hint",
 251                 .type   = FIO_OPT_BOOL,
 252                 .off1   = td_var_offset(fadvise_hint),
 253                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 254                 .def    = "1",
 255         },
 256         {
 257                 .name   = "ioengine",
 258                 .type   = FIO_OPT_STR_STORE,
 259                 .off1   = td_var_offset(ioengine),
 260                 .help   = "IO engine to use",
 261                 .def    = "sync",
 262                 .posval = {
 263                           { .ival = "sync",
 264                             .help = "Use read/write",
 265                           },
 266 #ifdef FIO_HAVE_LIBAIO
 267                           { .ival = "libaio",
 268                             .help = "Linux native asynchronous IO",
 269                           },
 270 #endif
 271 #ifdef FIO_HAVE_POSIXAIO
 272                           { .ival = "posixaio",
 273                             .help = "POSIX asynchronous IO",
 274                           },
 275 #endif
 276                           { .ival = "mmap",
 277                             .help = "Memory mapped IO",
 278                           },
 279 #ifdef FIO_HAVE_SPLICE
 280                           { .ival = "splice",
 281                             .help = "splice/vmsplice based IO",
 282                           },
 283 #endif
 284 #ifdef FIO_HAVE_SGIO
 285                           { .ival = "sg",
 286                             .help = "SCSI generic v3 IO",
 287                           },
 288 #endif
 289                           { .ival = "null",
 290                             .help = "Testing engine (no data transfer)",
 291                           },
 292                           { .ival = "net",
 293                             .help = "Network IO",
 294                           },
 295 #ifdef FIO_HAVE_SYSLET
 296                           { .ival = "syslet-rw",
 297                             .help = "syslet enabled async pread/pwrite IO",
 298                           },
 299 #endif
 300                           { .ival = "cpuio",
 301                             .help = "CPU cycler burner engine",
 302                           },
 303 #ifdef FIO_HAVE_GUASI
 304                           { .ival = "guasi",
 305                             .help = "GUASI IO engine",
 306                           },
 307 #endif
 308                           { .ival = "external",
 309                             .help = "Load external engine (append name)",
 310                           },
 311                 },
 312         },
 313         {
 314                 .name   = "iodepth",
 315                 .type   = FIO_OPT_INT,
 316                 .off1   = td_var_offset(iodepth),
 317                 .help   = "Amount of IO buffers to keep in flight",
 318                 .def    = "1",
 319         },
 320         {
 321                 .name   = "iodepth_batch",
 322                 .type   = FIO_OPT_INT,
 323                 .off1   = td_var_offset(iodepth_batch),
 324                 .help   = "Number of IO to submit in one go",
 325         },
 326         {
 327                 .name   = "iodepth_low",
 328                 .type   = FIO_OPT_INT,
 329                 .off1   = td_var_offset(iodepth_low),
 330                 .help   = "Low water mark for queuing depth",
 331         },
 332         {
 333                 .name   = "size",
 334                 .type   = FIO_OPT_STR_VAL,
 335                 .off1   = td_var_offset(size),
 336                 .help   = "Total size of device or files",
 337         },
 338         {
 339                 .name   = "filesize",
 340                 .type   = FIO_OPT_STR_VAL,
 341                 .off1   = td_var_offset(file_size_low),
 342                 .off2   = td_var_offset(file_size_high),
 343                 .help   = "Size of individual files",
 344         },
 345         {
 346                 .name   = "bs",
 347                 .alias  = "blocksize",
 348                 .type   = FIO_OPT_STR_VAL_INT,
 349                 .off1   = td_var_offset(bs[DDIR_READ]),
 350                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 351                 .help   = "Block size unit",
 352                 .def    = "4k",
 353         },
 354         {
 355                 .name   = "bsrange",
 356                 .alias  = "blocksize_range",
 357                 .type   = FIO_OPT_RANGE,
 358                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 359                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 360                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 361                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 362                 .help   = "Set block size range (in more detail than bs)",
 363         },
 364         {
 365                 .name   = "bs_unaligned",
 366                 .alias  = "blocksize_unaligned",
 367                 .type   = FIO_OPT_STR_SET,
 368                 .off1   = td_var_offset(bs_unaligned),
 369                 .help   = "Don't sector align IO buffer sizes",
 370         },
 371         {
 372                 .name   = "offset",
 373                 .type   = FIO_OPT_STR_VAL,
 374                 .off1   = td_var_offset(start_offset),
 375                 .help   = "Start IO from this offset",
 376                 .def    = "0",
 377         },
 378         {
 379                 .name   = "randrepeat",
 380                 .type   = FIO_OPT_BOOL,
 381                 .off1   = td_var_offset(rand_repeatable),
 382                 .help   = "Use repeatable random IO pattern",
 383                 .def    = "1",
 384         },
 385         {
 386                 .name   = "norandommap",
 387                 .type   = FIO_OPT_STR_SET,
 388                 .off1   = td_var_offset(norandommap),
 389                 .help   = "Accept potential duplicate random blocks",
 390         },
 391         {
 392                 .name   = "nrfiles",
 393                 .type   = FIO_OPT_INT,
 394                 .off1   = td_var_offset(nr_files),
 395                 .help   = "Split job workload between this number of files",
 396                 .def    = "1",
 397         },
 398         {
 399                 .name   = "openfiles",
 400                 .type   = FIO_OPT_INT,
 401                 .off1   = td_var_offset(open_files),
 402                 .help   = "Number of files to keep open at the same time",
 403         },
 404         {
 405                 .name   = "file_service_type",
 406                 .type   = FIO_OPT_STR,
 407                 .cb     = str_fst_cb,
 408                 .off1   = td_var_offset(file_service_type),
 409                 .help   = "How to select which file to service next",
 410                 .def    = "roundrobin",
 411                 .posval = {
 412                           { .ival = "random",
 413                             .oval = FIO_FSERVICE_RANDOM,
 414                             .help = "Choose a file at random",
 415                           },
 416                           { .ival = "roundrobin",
 417                             .oval = FIO_FSERVICE_RR,
 418                             .help = "Round robin select files",
 419                           },
 420                 },
 421         },
 422         {
 423                 .name   = "fsync",
 424                 .type   = FIO_OPT_INT,
 425                 .off1   = td_var_offset(fsync_blocks),
 426                 .help   = "Issue fsync for writes every given number of blocks",
 427                 .def    = "0",
 428         },
 429         {
 430                 .name   = "direct",
 431                 .type   = FIO_OPT_BOOL,
 432                 .off1   = td_var_offset(odirect),
 433                 .help   = "Use O_DIRECT IO (negates buffered)",
 434                 .def    = "0",
 435         },
 436         {
 437                 .name   = "buffered",
 438                 .type   = FIO_OPT_BOOL,
 439                 .off1   = td_var_offset(odirect),
 440                 .neg    = 1,
 441                 .help   = "Use buffered IO (negates direct)",
 442                 .def    = "1",
 443         },
 444         {
 445                 .name   = "overwrite",
 446                 .type   = FIO_OPT_BOOL,
 447                 .off1   = td_var_offset(overwrite),
 448                 .help   = "When writing, set whether to overwrite current data",
 449                 .def    = "0",
 450         },
 451         {
 452                 .name   = "loops",
 453                 .type   = FIO_OPT_INT,
 454                 .off1   = td_var_offset(loops),
 455                 .help   = "Number of times to run the job",
 456                 .def    = "1",
 457         },
 458         {
 459                 .name   = "numjobs",
 460                 .type   = FIO_OPT_INT,
 461                 .off1   = td_var_offset(numjobs),
 462                 .help   = "Duplicate this job this many times",
 463                 .def    = "1",
 464         },
 465         {
 466                 .name   = "startdelay",
 467                 .type   = FIO_OPT_INT,
 468                 .off1   = td_var_offset(start_delay),
 469                 .help   = "Only start job when this period has passed",
 470                 .def    = "0",
 471         },
 472         {
 473                 .name   = "runtime",
 474                 .alias  = "timeout",
 475                 .type   = FIO_OPT_STR_VAL_TIME,
 476                 .off1   = td_var_offset(timeout),
 477                 .help   = "Stop workload when this amount of time has passed",
 478                 .def    = "0",
 479         },
 480         {
 481                 .name   = "mem",
 482                 .alias  = "iomem",
 483                 .type   = FIO_OPT_STR,
 484                 .cb     = str_mem_cb,
 485                 .off1   = td_var_offset(mem_type),
 486                 .help   = "Backing type for IO buffers",
 487                 .def    = "malloc",
 488                 .posval = {
 489                           { .ival = "malloc",
 490                             .oval = MEM_MALLOC,
 491                             .help = "Use malloc(3) for IO buffers",
 492                           },
 493                           { .ival = "shm",
 494                             .oval = MEM_SHM,
 495                             .help = "Use shared memory segments for IO buffers",
 496                           },
 497 #ifdef FIO_HAVE_HUGETLB
 498                           { .ival = "shmhuge",
 499                             .oval = MEM_SHMHUGE,
 500                             .help = "Like shm, but use huge pages",
 501                           },
 502 #endif
 503                           { .ival = "mmap",
 504                             .oval = MEM_MMAP,
 505                             .help = "Use mmap(2) (file or anon) for IO buffers",
 506                           },
 507 #ifdef FIO_HAVE_HUGETLB
 508                           { .ival = "mmaphuge",
 509                             .oval = MEM_MMAPHUGE,
 510                             .help = "Like mmap, but use huge pages",
 511                           },
 512 #endif
 513                   },
 514         },
 515         {
 516                 .name   = "verify",
 517                 .type   = FIO_OPT_STR,
 518                 .off1   = td_var_offset(verify),
 519                 .help   = "Verify data written",
 520                 .def    = "0",
 521                 .posval = {
 522                           { .ival = "0",
 523                             .oval = VERIFY_NONE,
 524                             .help = "Don't do IO verification",
 525                           },
 526                           { .ival = "crc32",
 527                             .oval = VERIFY_CRC32,
 528                             .help = "Use crc32 checksums for verification",
 529                           },
 530                           { .ival = "md5",
 531                             .oval = VERIFY_MD5,
 532                             .help = "Use md5 checksums for verification",
 533                           },
 534                 },
 535         },
 536         {
 537                 .name   = "write_iolog",
 538                 .type   = FIO_OPT_STR_STORE,
 539                 .off1   = td_var_offset(write_iolog_file),
 540                 .help   = "Store IO pattern to file",
 541         },
 542         {
 543                 .name   = "read_iolog",
 544                 .type   = FIO_OPT_STR_STORE,
 545                 .off1   = td_var_offset(read_iolog_file),
 546                 .help   = "Playback IO pattern from file",
 547         },
 548         {
 549                 .name   = "exec_prerun",
 550                 .type   = FIO_OPT_STR_STORE,
 551                 .off1   = td_var_offset(exec_prerun),
 552                 .help   = "Execute this file prior to running job",
 553         },
 554         {
 555                 .name   = "exec_postrun",
 556                 .type   = FIO_OPT_STR_STORE,
 557                 .off1   = td_var_offset(exec_postrun),
 558                 .help   = "Execute this file after running job",
 559         },
 560 #ifdef FIO_HAVE_IOSCHED_SWITCH
 561         {
 562                 .name   = "ioscheduler",
 563                 .type   = FIO_OPT_STR_STORE,
 564                 .off1   = td_var_offset(ioscheduler),
 565                 .help   = "Use this IO scheduler on the backing device",
 566         },
 567 #endif
 568         {
 569                 .name   = "zonesize",
 570                 .type   = FIO_OPT_STR_VAL,
 571                 .off1   = td_var_offset(zone_size),
 572                 .help   = "Give size of an IO zone",
 573                 .def    = "0",
 574         },
 575         {
 576                 .name   = "zoneskip",
 577                 .type   = FIO_OPT_STR_VAL,
 578                 .off1   = td_var_offset(zone_skip),
 579                 .help   = "Space between IO zones",
 580                 .def    = "0",
 581         },
 582         {
 583                 .name   = "lockmem",
 584                 .type   = FIO_OPT_STR_VAL,
 585                 .cb     = str_lockmem_cb,
 586                 .help   = "Lock down this amount of memory",
 587                 .def    = "0",
 588         },
 589         {
 590                 .name   = "rwmixcycle",
 591                 .type   = FIO_OPT_INT,
 592                 .off1   = td_var_offset(rwmixcycle),
 593                 .help   = "Cycle period for mixed read/write workloads (msec)",
 594                 .def    = "500",
 595         },
 596         {
 597                 .name   = "rwmixread",
 598                 .type   = FIO_OPT_INT,
 599                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 600                 .maxval = 100,
 601                 .help   = "Percentage of mixed workload that is reads",
 602                 .def    = "50",
 603         },
 604         {
 605                 .name   = "rwmixwrite",
 606                 .type   = FIO_OPT_INT,
 607                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 608                 .maxval = 100,
 609                 .help   = "Percentage of mixed workload that is writes",
 610                 .def    = "50",
 611         },
 612         {
 613                 .name   = "nice",
 614                 .type   = FIO_OPT_INT,
 615                 .off1   = td_var_offset(nice),
 616                 .help   = "Set job CPU nice value",
 617                 .minval = -19,
 618                 .maxval = 20,
 619                 .def    = "0",
 620         },
 621 #ifdef FIO_HAVE_IOPRIO
 622         {
 623                 .name   = "prio",
 624                 .type   = FIO_OPT_INT,
 625                 .cb     = str_prio_cb,
 626                 .help   = "Set job IO priority value",
 627                 .minval = 0,
 628                 .maxval = 7,
 629         },
 630         {
 631                 .name   = "prioclass",
 632                 .type   = FIO_OPT_INT,
 633                 .cb     = str_prioclass_cb,
 634                 .help   = "Set job IO priority class",
 635                 .minval = 0,
 636                 .maxval = 3,
 637         },
 638 #endif
 639         {
 640                 .name   = "thinktime",
 641                 .type   = FIO_OPT_INT,
 642                 .off1   = td_var_offset(thinktime),
 643                 .help   = "Idle time between IO buffers (usec)",
 644                 .def    = "0",
 645         },
 646         {
 647                 .name   = "thinktime_spin",
 648                 .type   = FIO_OPT_INT,
 649                 .off1   = td_var_offset(thinktime_spin),
 650                 .help   = "Start think time by spinning this amount (usec)",
 651                 .def    = "0",
 652         },
 653         {
 654                 .name   = "thinktime_blocks",
 655                 .type   = FIO_OPT_INT,
 656                 .off1   = td_var_offset(thinktime_blocks),
 657                 .help   = "IO buffer period between 'thinktime'",
 658                 .def    = "1",
 659         },
 660         {
 661                 .name   = "rate",
 662                 .type   = FIO_OPT_INT,
 663                 .off1   = td_var_offset(rate),
 664                 .help   = "Set bandwidth rate",
 665         },
 666         {
 667                 .name   = "ratemin",
 668                 .type   = FIO_OPT_INT,
 669                 .off1   = td_var_offset(ratemin),
 670                 .help   = "Job must meet this rate or it will be shutdown",
 671         },
 672         {
 673                 .name   = "rate_iops",
 674                 .type   = FIO_OPT_INT,
 675                 .off1   = td_var_offset(rate_iops),
 676                 .help   = "Limit IO used to this number of IO operations/sec",
 677         },
 678         {
 679                 .name   = "rate_iops_min",
 680                 .type   = FIO_OPT_INT,
 681                 .off1   = td_var_offset(rate_iops_min),
 682                 .help   = "Job must meet this rate or it will be shutdown",
 683         },
 684         {
 685                 .name   = "ratecycle",
 686                 .type   = FIO_OPT_INT,
 687                 .off1   = td_var_offset(ratecycle),
 688                 .help   = "Window average for rate limits (msec)",
 689                 .def    = "1000",
 690         },
 691         {
 692                 .name   = "invalidate",
 693                 .type   = FIO_OPT_BOOL,
 694                 .off1   = td_var_offset(invalidate_cache),
 695                 .help   = "Invalidate buffer/page cache prior to running job",
 696                 .def    = "1",
 697         },
 698         {
 699                 .name   = "sync",
 700                 .type   = FIO_OPT_BOOL,
 701                 .off1   = td_var_offset(sync_io),
 702                 .help   = "Use O_SYNC for buffered writes",
 703                 .def    = "0",
 704         },
 705         {
 706                 .name   = "bwavgtime",
 707                 .type   = FIO_OPT_INT,
 708                 .off1   = td_var_offset(bw_avg_time),
 709                 .help   = "Time window over which to calculate bandwidth (msec)",
 710                 .def    = "500",
 711         },
 712         {
 713                 .name   = "create_serialize",
 714                 .type   = FIO_OPT_BOOL,
 715                 .off1   = td_var_offset(create_serialize),
 716                 .help   = "Serialize creating of job files",
 717                 .def    = "1",
 718         },
 719         {
 720                 .name   = "create_fsync",
 721                 .type   = FIO_OPT_BOOL,
 722                 .off1   = td_var_offset(create_fsync),
 723                 .help   = "Fsync file after creation",
 724                 .def    = "1",
 725         },
 726         {
 727                 .name   = "cpuload",
 728                 .type   = FIO_OPT_INT,
 729                 .off1   = td_var_offset(cpuload),
 730                 .help   = "Use this percentage of CPU",
 731         },
 732         {
 733                 .name   = "cpuchunks",
 734                 .type   = FIO_OPT_INT,
 735                 .off1   = td_var_offset(cpucycle),
 736                 .help   = "Length of the CPU burn cycles (usecs)",
 737                 .def    = "50000",
 738         },
 739 #ifdef FIO_HAVE_CPU_AFFINITY
 740         {
 741                 .name   = "cpumask",
 742                 .type   = FIO_OPT_INT,
 743                 .cb     = str_cpumask_cb,
 744                 .help   = "CPU affinity mask",
 745         },
 746 #endif
 747         {
 748                 .name   = "end_fsync",
 749                 .type   = FIO_OPT_BOOL,
 750                 .off1   = td_var_offset(end_fsync),
 751                 .help   = "Include fsync at the end of job",
 752                 .def    = "0",
 753         },
 754         {
 755                 .name   = "fsync_on_close",
 756                 .type   = FIO_OPT_BOOL,
 757                 .off1   = td_var_offset(fsync_on_close),
 758                 .help   = "fsync files on close",
 759                 .def    = "0",
 760         },
 761         {
 762                 .name   = "unlink",
 763                 .type   = FIO_OPT_BOOL,
 764                 .off1   = td_var_offset(unlink),
 765                 .help   = "Unlink created files after job has completed",
 766                 .def    = "0",
 767         },
 768         {
 769                 .name   = "exitall",
 770                 .type   = FIO_OPT_STR_SET,
 771                 .cb     = str_exitall_cb,
 772                 .help   = "Terminate all jobs when one exits",
 773         },
 774         {
 775                 .name   = "stonewall",
 776                 .type   = FIO_OPT_STR_SET,
 777                 .off1   = td_var_offset(stonewall),
 778                 .help   = "Insert a hard barrier between this job and previous",
 779         },
 780         {
 781                 .name   = "new_group",
 782                 .type   = FIO_OPT_STR_SET,
 783                 .off1   = td_var_offset(new_group),
 784                 .help   = "Mark the start of a new group (for reporting)",
 785         },
 786         {
 787                 .name   = "thread",
 788                 .type   = FIO_OPT_STR_SET,
 789                 .off1   = td_var_offset(use_thread),
 790                 .help   = "Use threads instead of forks",
 791         },
 792         {
 793                 .name   = "write_bw_log",
 794                 .type   = FIO_OPT_STR_SET,
 795                 .off1   = td_var_offset(write_bw_log),
 796                 .help   = "Write log of bandwidth during run",
 797         },
 798         {
 799                 .name   = "write_lat_log",
 800                 .type   = FIO_OPT_STR_SET,
 801                 .off1   = td_var_offset(write_lat_log),
 802                 .help   = "Write log of latency during run",
 803         },
 804         {
 805                 .name   = "hugepage-size",
 806                 .type   = FIO_OPT_STR_VAL,
 807                 .off1   = td_var_offset(hugepage_size),
 808                 .help   = "When using hugepages, specify size of each page",
 809                 .def    = __stringify(FIO_HUGE_PAGE),
 810         },
 811         {
 812                 .name   = "group_reporting",
 813                 .type   = FIO_OPT_STR_SET,
 814                 .off1   = td_var_offset(group_reporting),
 815                 .help   = "Do reporting on a per-group basis",
 816         },
 817         {
 818                 .name = NULL,
 819         },
 820 };
 821
 822 void fio_options_dup_and_init(struct option *long_options)
 823 {
 824         struct fio_option *o;
 825         unsigned int i;
 826
 827         options_init(options);
 828
 829         i = 0;
 830         while (long_options[i].name)
 831                 i++;
 832
 833         o = &options[0];
 834         while (o->name) {
 835                 long_options[i].name = o->name;
 836                 long_options[i].val = FIO_GETOPT_JOB;
 837                 if (o->type == FIO_OPT_STR_SET)
 838                         long_options[i].has_arg = no_argument;
 839                 else
 840                         long_options[i].has_arg = required_argument;
 841
 842                 i++;
 843                 o++;
 844                 assert(i < FIO_NR_OPTIONS);
 845         }
 846 }
 847
 848 int fio_option_parse(struct thread_data *td, const char *opt)
 849 {
 850         return parse_option(opt, options, td);
 851 }
 852
 853 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
 854 {
 855         return parse_cmd_option(opt, val, options, td);
 856 }
 857
 858 void fio_fill_default_options(struct thread_data *td)
 859 {
 860         fill_default_options(td, options);
 861 }
 862
 863 int fio_show_option_help(const char *opt)
 864 {
 865         return show_cmd_help(options, opt);
 866 }
 867
 868 static void __options_mem(struct thread_data *td, int alloc)
 869 {
 870         struct thread_options *o = &td->o;
 871         struct fio_option *opt;
 872         char **ptr;
 873         int i;
 874
 875         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
 876                 if (opt->type != FIO_OPT_STR_STORE)
 877                         continue;
 878
 879                 ptr = (void *) o + opt->off1;
 880                 if (*ptr) {
 881                         if (alloc)
 882                                 *ptr = strdup(*ptr);
 883                         else {
 884                                 free(*ptr);
 885                                 *ptr = NULL;
 886                         }
 887                 }
 888         }
 889 }
 890
 891 /*
 892  * dupe FIO_OPT_STR_STORE options
 893  */
 894 void options_mem_dupe(struct thread_data *td)
 895 {
 896         __options_mem(td, 1);
 897 }
 898
 899 void options_mem_free(struct thread_data *td)
 900 {
 901         __options_mem(td, 0);
 902 }