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 = 1;
  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         unsigned short mask;
  68
  69         /*
  70          * mask off old class bits, str_prio_cb() may have set a default class
  71          */
  72         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
  73         td->ioprio &= mask;
  74
  75         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
  76         return 0;
  77 }
  78
  79 static int str_prio_cb(void *data, unsigned int *val)
  80 {
  81         struct thread_data *td = data;
  82
  83         td->ioprio |= *val;
  84
  85         /*
  86          * If no class is set, assume BE
  87          */
  88         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
  89                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
  90
  91         return 0;
  92 }
  93 #endif
  94
  95 static int str_exitall_cb(void)
  96 {
  97         exitall_on_terminate = 1;
  98         return 0;
  99 }
 100
 101 #ifdef FIO_HAVE_CPU_AFFINITY
 102 static int str_cpumask_cb(void *data, unsigned int *val)
 103 {
 104         struct thread_data *td = data;
 105         unsigned int i;
 106
 107         CPU_ZERO(&td->o.cpumask);
 108
 109         for (i = 0; i < sizeof(int) * 8; i++)
 110                 if ((1 << i) & *val)
 111                         CPU_SET(*val, &td->o.cpumask);
 112
 113         td->o.cpumask_set = 1;
 114         return 0;
 115 }
 116
 117 static int str_cpus_allowed_cb(void *data, const char *input)
 118 {
 119         struct thread_data *td = data;
 120         char *cpu, *str, *p;
 121
 122         CPU_ZERO(&td->o.cpumask);
 123
 124         p = str = strdup(input);
 125
 126         strip_blank_front(&str);
 127         strip_blank_end(str);
 128
 129         while ((cpu = strsep(&str, ",")) != NULL) {
 130                 if (!strlen(cpu))
 131                         break;
 132                 CPU_SET(atoi(cpu), &td->o.cpumask);
 133         }
 134
 135         free(p);
 136         td->o.cpumask_set = 1;
 137         exit(0);
 138         return 0;
 139 }
 140 #endif
 141
 142 static int str_fst_cb(void *data, const char *str)
 143 {
 144         struct thread_data *td = data;
 145         char *nr = get_opt_postfix(str);
 146
 147         td->file_service_nr = 1;
 148         if (nr)
 149                 td->file_service_nr = atoi(nr);
 150
 151         return 0;
 152 }
 153
 154 static int str_filename_cb(void *data, const char *input)
 155 {
 156         struct thread_data *td = data;
 157         char *fname, *str, *p;
 158
 159         p = str = strdup(input);
 160
 161         strip_blank_front(&str);
 162         strip_blank_end(str);
 163
 164         if (!td->files_index)
 165                 td->o.nr_files = 0;
 166
 167         while ((fname = strsep(&str, ":")) != NULL) {
 168                 if (!strlen(fname))
 169                         break;
 170                 add_file(td, fname);
 171                 td->o.nr_files++;
 172         }
 173
 174         free(p);
 175         return 0;
 176 }
 177
 178 static int str_directory_cb(void *data, const char fio_unused *str)
 179 {
 180         struct thread_data *td = data;
 181         struct stat sb;
 182
 183         if (lstat(td->o.directory, &sb) < 0) {
 184                 log_err("fio: %s is not a directory\n", td->o.directory);
 185                 td_verror(td, errno, "lstat");
 186                 return 1;
 187         }
 188         if (!S_ISDIR(sb.st_mode)) {
 189                 log_err("fio: %s is not a directory\n", td->o.directory);
 190                 return 1;
 191         }
 192
 193         return 0;
 194 }
 195
 196 static int str_opendir_cb(void *data, const char fio_unused *str)
 197 {
 198         struct thread_data *td = data;
 199
 200         if (!td->files_index)
 201                 td->o.nr_files = 0;
 202
 203         return add_dir_files(td, td->o.opendir);
 204 }
 205
 206 static int str_verify_offset_cb(void *data, unsigned int *off)
 207 {
 208         struct thread_data *td = data;
 209
 210         if (*off && *off < sizeof(struct verify_header)) {
 211                 log_err("fio: verify_offset too small\n");
 212                 return 1;
 213         }
 214
 215         td->o.verify_offset = *off;
 216         return 0;
 217 }
 218
 219
 220 #define __stringify_1(x)        #x
 221 #define __stringify(x)          __stringify_1(x)
 222
 223 /*
 224  * Map of job/command line options
 225  */
 226 static struct fio_option options[] = {
 227         {
 228                 .name   = "description",
 229                 .type   = FIO_OPT_STR_STORE,
 230                 .off1   = td_var_offset(description),
 231                 .help   = "Text job description",
 232         },
 233         {
 234                 .name   = "name",
 235                 .type   = FIO_OPT_STR_STORE,
 236                 .off1   = td_var_offset(name),
 237                 .help   = "Name of this job",
 238         },
 239         {
 240                 .name   = "directory",
 241                 .type   = FIO_OPT_STR_STORE,
 242                 .off1   = td_var_offset(directory),
 243                 .cb     = str_directory_cb,
 244                 .help   = "Directory to store files in",
 245         },
 246         {
 247                 .name   = "filename",
 248                 .type   = FIO_OPT_STR_STORE,
 249                 .off1   = td_var_offset(filename),
 250                 .cb     = str_filename_cb,
 251                 .help   = "File(s) to use for the workload",
 252         },
 253         {
 254                 .name   = "opendir",
 255                 .type   = FIO_OPT_STR_STORE,
 256                 .off1   = td_var_offset(opendir),
 257                 .cb     = str_opendir_cb,
 258                 .help   = "Recursively add files from this directory and down",
 259         },
 260         {
 261                 .name   = "rw",
 262                 .alias  = "readwrite",
 263                 .type   = FIO_OPT_STR,
 264                 .cb     = str_rw_cb,
 265                 .off1   = td_var_offset(td_ddir),
 266                 .help   = "IO direction",
 267                 .def    = "read",
 268                 .posval = {
 269                           { .ival = "read",
 270                             .oval = TD_DDIR_READ,
 271                             .help = "Sequential read",
 272                           },
 273                           { .ival = "write",
 274                             .oval = TD_DDIR_WRITE,
 275                             .help = "Sequential write",
 276                           },
 277                           { .ival = "randread",
 278                             .oval = TD_DDIR_RANDREAD,
 279                             .help = "Random read",
 280                           },
 281                           { .ival = "randwrite",
 282                             .oval = TD_DDIR_RANDWRITE,
 283                             .help = "Random write",
 284                           },
 285                           { .ival = "rw",
 286                             .oval = TD_DDIR_RW,
 287                             .help = "Sequential read and write mix",
 288                           },
 289                           { .ival = "randrw",
 290                             .oval = TD_DDIR_RANDRW,
 291                             .help = "Random read and write mix"
 292                           },
 293                 },
 294         },
 295         {
 296                 .name   = "fadvise_hint",
 297                 .type   = FIO_OPT_BOOL,
 298                 .off1   = td_var_offset(fadvise_hint),
 299                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 300                 .def    = "1",
 301         },
 302         {
 303                 .name   = "ioengine",
 304                 .type   = FIO_OPT_STR_STORE,
 305                 .off1   = td_var_offset(ioengine),
 306                 .help   = "IO engine to use",
 307                 .def    = "sync",
 308                 .posval = {
 309                           { .ival = "sync",
 310                             .help = "Use read/write",
 311                           },
 312 #ifdef FIO_HAVE_LIBAIO
 313                           { .ival = "libaio",
 314                             .help = "Linux native asynchronous IO",
 315                           },
 316 #endif
 317 #ifdef FIO_HAVE_POSIXAIO
 318                           { .ival = "posixaio",
 319                             .help = "POSIX asynchronous IO",
 320                           },
 321 #endif
 322                           { .ival = "mmap",
 323                             .help = "Memory mapped IO",
 324                           },
 325 #ifdef FIO_HAVE_SPLICE
 326                           { .ival = "splice",
 327                             .help = "splice/vmsplice based IO",
 328                           },
 329                           { .ival = "netsplice",
 330                             .help = "splice/vmsplice to/from the network",
 331                           },
 332 #endif
 333 #ifdef FIO_HAVE_SGIO
 334                           { .ival = "sg",
 335                             .help = "SCSI generic v3 IO",
 336                           },
 337 #endif
 338                           { .ival = "null",
 339                             .help = "Testing engine (no data transfer)",
 340                           },
 341                           { .ival = "net",
 342                             .help = "Network IO",
 343                           },
 344 #ifdef FIO_HAVE_SYSLET
 345                           { .ival = "syslet-rw",
 346                             .help = "syslet enabled async pread/pwrite IO",
 347                           },
 348 #endif
 349                           { .ival = "cpuio",
 350                             .help = "CPU cycler burner engine",
 351                           },
 352 #ifdef FIO_HAVE_GUASI
 353                           { .ival = "guasi",
 354                             .help = "GUASI IO engine",
 355                           },
 356 #endif
 357                           { .ival = "external",
 358                             .help = "Load external engine (append name)",
 359                           },
 360                 },
 361         },
 362         {
 363                 .name   = "iodepth",
 364                 .type   = FIO_OPT_INT,
 365                 .off1   = td_var_offset(iodepth),
 366                 .help   = "Amount of IO buffers to keep in flight",
 367                 .def    = "1",
 368         },
 369         {
 370                 .name   = "iodepth_batch",
 371                 .type   = FIO_OPT_INT,
 372                 .off1   = td_var_offset(iodepth_batch),
 373                 .help   = "Number of IO to submit in one go",
 374         },
 375         {
 376                 .name   = "iodepth_low",
 377                 .type   = FIO_OPT_INT,
 378                 .off1   = td_var_offset(iodepth_low),
 379                 .help   = "Low water mark for queuing depth",
 380         },
 381         {
 382                 .name   = "size",
 383                 .type   = FIO_OPT_STR_VAL,
 384                 .off1   = td_var_offset(size),
 385                 .minval = 1,
 386                 .help   = "Total size of device or files",
 387         },
 388         {
 389                 .name   = "filesize",
 390                 .type   = FIO_OPT_STR_VAL,
 391                 .off1   = td_var_offset(file_size_low),
 392                 .off2   = td_var_offset(file_size_high),
 393                 .minval = 1,
 394                 .help   = "Size of individual files",
 395         },
 396         {
 397                 .name   = "bs",
 398                 .alias  = "blocksize",
 399                 .type   = FIO_OPT_STR_VAL_INT,
 400                 .off1   = td_var_offset(bs[DDIR_READ]),
 401                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 402                 .minval = 1,
 403                 .help   = "Block size unit",
 404                 .def    = "4k",
 405         },
 406         {
 407                 .name   = "bsrange",
 408                 .alias  = "blocksize_range",
 409                 .type   = FIO_OPT_RANGE,
 410                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 411                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 412                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 413                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 414                 .minval = 1,
 415                 .help   = "Set block size range (in more detail than bs)",
 416         },
 417         {
 418                 .name   = "bs_unaligned",
 419                 .alias  = "blocksize_unaligned",
 420                 .type   = FIO_OPT_STR_SET,
 421                 .off1   = td_var_offset(bs_unaligned),
 422                 .help   = "Don't sector align IO buffer sizes",
 423         },
 424         {
 425                 .name   = "offset",
 426                 .type   = FIO_OPT_STR_VAL,
 427                 .off1   = td_var_offset(start_offset),
 428                 .help   = "Start IO from this offset",
 429                 .def    = "0",
 430         },
 431         {
 432                 .name   = "randrepeat",
 433                 .type   = FIO_OPT_BOOL,
 434                 .off1   = td_var_offset(rand_repeatable),
 435                 .help   = "Use repeatable random IO pattern",
 436                 .def    = "1",
 437         },
 438         {
 439                 .name   = "norandommap",
 440                 .type   = FIO_OPT_STR_SET,
 441                 .off1   = td_var_offset(norandommap),
 442                 .help   = "Accept potential duplicate random blocks",
 443         },
 444         {
 445                 .name   = "nrfiles",
 446                 .type   = FIO_OPT_INT,
 447                 .off1   = td_var_offset(nr_files),
 448                 .help   = "Split job workload between this number of files",
 449                 .def    = "1",
 450         },
 451         {
 452                 .name   = "openfiles",
 453                 .type   = FIO_OPT_INT,
 454                 .off1   = td_var_offset(open_files),
 455                 .help   = "Number of files to keep open at the same time",
 456         },
 457         {
 458                 .name   = "file_service_type",
 459                 .type   = FIO_OPT_STR,
 460                 .cb     = str_fst_cb,
 461                 .off1   = td_var_offset(file_service_type),
 462                 .help   = "How to select which file to service next",
 463                 .def    = "roundrobin",
 464                 .posval = {
 465                           { .ival = "random",
 466                             .oval = FIO_FSERVICE_RANDOM,
 467                             .help = "Choose a file at random",
 468                           },
 469                           { .ival = "roundrobin",
 470                             .oval = FIO_FSERVICE_RR,
 471                             .help = "Round robin select files",
 472                           },
 473                 },
 474         },
 475         {
 476                 .name   = "fsync",
 477                 .type   = FIO_OPT_INT,
 478                 .off1   = td_var_offset(fsync_blocks),
 479                 .help   = "Issue fsync for writes every given number of blocks",
 480                 .def    = "0",
 481         },
 482         {
 483                 .name   = "direct",
 484                 .type   = FIO_OPT_BOOL,
 485                 .off1   = td_var_offset(odirect),
 486                 .help   = "Use O_DIRECT IO (negates buffered)",
 487                 .def    = "0",
 488         },
 489         {
 490                 .name   = "buffered",
 491                 .type   = FIO_OPT_BOOL,
 492                 .off1   = td_var_offset(odirect),
 493                 .neg    = 1,
 494                 .help   = "Use buffered IO (negates direct)",
 495                 .def    = "1",
 496         },
 497         {
 498                 .name   = "overwrite",
 499                 .type   = FIO_OPT_BOOL,
 500                 .off1   = td_var_offset(overwrite),
 501                 .help   = "When writing, set whether to overwrite current data",
 502                 .def    = "0",
 503         },
 504         {
 505                 .name   = "loops",
 506                 .type   = FIO_OPT_INT,
 507                 .off1   = td_var_offset(loops),
 508                 .help   = "Number of times to run the job",
 509                 .def    = "1",
 510         },
 511         {
 512                 .name   = "numjobs",
 513                 .type   = FIO_OPT_INT,
 514                 .off1   = td_var_offset(numjobs),
 515                 .help   = "Duplicate this job this many times",
 516                 .def    = "1",
 517         },
 518         {
 519                 .name   = "startdelay",
 520                 .type   = FIO_OPT_INT,
 521                 .off1   = td_var_offset(start_delay),
 522                 .help   = "Only start job when this period has passed",
 523                 .def    = "0",
 524         },
 525         {
 526                 .name   = "runtime",
 527                 .alias  = "timeout",
 528                 .type   = FIO_OPT_STR_VAL_TIME,
 529                 .off1   = td_var_offset(timeout),
 530                 .help   = "Stop workload when this amount of time has passed",
 531                 .def    = "0",
 532         },
 533         {
 534                 .name   = "time_based",
 535                 .type   = FIO_OPT_STR_SET,
 536                 .off1   = td_var_offset(time_based),
 537                 .help   = "Keep running until runtime/timeout is met",
 538         },
 539         {
 540                 .name   = "mem",
 541                 .alias  = "iomem",
 542                 .type   = FIO_OPT_STR,
 543                 .cb     = str_mem_cb,
 544                 .off1   = td_var_offset(mem_type),
 545                 .help   = "Backing type for IO buffers",
 546                 .def    = "malloc",
 547                 .posval = {
 548                           { .ival = "malloc",
 549                             .oval = MEM_MALLOC,
 550                             .help = "Use malloc(3) for IO buffers",
 551                           },
 552                           { .ival = "shm",
 553                             .oval = MEM_SHM,
 554                             .help = "Use shared memory segments for IO buffers",
 555                           },
 556 #ifdef FIO_HAVE_HUGETLB
 557                           { .ival = "shmhuge",
 558                             .oval = MEM_SHMHUGE,
 559                             .help = "Like shm, but use huge pages",
 560                           },
 561 #endif
 562                           { .ival = "mmap",
 563                             .oval = MEM_MMAP,
 564                             .help = "Use mmap(2) (file or anon) for IO buffers",
 565                           },
 566 #ifdef FIO_HAVE_HUGETLB
 567                           { .ival = "mmaphuge",
 568                             .oval = MEM_MMAPHUGE,
 569                             .help = "Like mmap, but use huge pages",
 570                           },
 571 #endif
 572                   },
 573         },
 574         {
 575                 .name   = "verify",
 576                 .type   = FIO_OPT_STR,
 577                 .off1   = td_var_offset(verify),
 578                 .help   = "Verify data written",
 579                 .def    = "0",
 580                 .posval = {
 581                           { .ival = "0",
 582                             .oval = VERIFY_NONE,
 583                             .help = "Don't do IO verification",
 584                           },
 585                           { .ival = "md5",
 586                             .oval = VERIFY_MD5,
 587                             .help = "Use md5 checksums for verification",
 588                           },
 589                           { .ival = "crc64",
 590                             .oval = VERIFY_CRC64,
 591                             .help = "Use crc64 checksums for verification",
 592                           },
 593                           { .ival = "crc32",
 594                             .oval = VERIFY_CRC32,
 595                             .help = "Use crc32 checksums for verification",
 596                           },
 597                           { .ival = "crc16",
 598                             .oval = VERIFY_CRC16,
 599                             .help = "Use crc16 checksums for verification",
 600                           },
 601                           { .ival = "crc7",
 602                             .oval = VERIFY_CRC7,
 603                             .help = "Use crc7 checksums for verification",
 604                           },
 605                           {
 606                             .ival = "null",
 607                             .oval = VERIFY_NULL,
 608                             .help = "Pretend to verify",
 609                           },
 610                 },
 611         },
 612         {
 613                 .name   = "verifysort",
 614                 .type   = FIO_OPT_BOOL,
 615                 .off1   = td_var_offset(verifysort),
 616                 .help   = "Sort written verify blocks for read back",
 617                 .def    = "1",
 618         },
 619         {
 620                 .name   = "verify_interval",
 621                 .type   = FIO_OPT_STR_VAL_INT,
 622                 .off1   = td_var_offset(verify_interval),
 623                 .minval = 2 * sizeof(struct verify_header),
 624                 .help   = "Store verify buffer header every N bytes",
 625         },
 626         {
 627                 .name   = "verify_offset",
 628                 .type   = FIO_OPT_STR_VAL_INT,
 629                 .help   = "Offset verify header location by N bytes",
 630                 .def    = "0",
 631                 .cb     = str_verify_offset_cb,
 632         },
 633         {
 634                 .name   = "write_iolog",
 635                 .type   = FIO_OPT_STR_STORE,
 636                 .off1   = td_var_offset(write_iolog_file),
 637                 .help   = "Store IO pattern to file",
 638         },
 639         {
 640                 .name   = "read_iolog",
 641                 .type   = FIO_OPT_STR_STORE,
 642                 .off1   = td_var_offset(read_iolog_file),
 643                 .help   = "Playback IO pattern from file",
 644         },
 645         {
 646                 .name   = "exec_prerun",
 647                 .type   = FIO_OPT_STR_STORE,
 648                 .off1   = td_var_offset(exec_prerun),
 649                 .help   = "Execute this file prior to running job",
 650         },
 651         {
 652                 .name   = "exec_postrun",
 653                 .type   = FIO_OPT_STR_STORE,
 654                 .off1   = td_var_offset(exec_postrun),
 655                 .help   = "Execute this file after running job",
 656         },
 657 #ifdef FIO_HAVE_IOSCHED_SWITCH
 658         {
 659                 .name   = "ioscheduler",
 660                 .type   = FIO_OPT_STR_STORE,
 661                 .off1   = td_var_offset(ioscheduler),
 662                 .help   = "Use this IO scheduler on the backing device",
 663         },
 664 #endif
 665         {
 666                 .name   = "zonesize",
 667                 .type   = FIO_OPT_STR_VAL,
 668                 .off1   = td_var_offset(zone_size),
 669                 .help   = "Give size of an IO zone",
 670                 .def    = "0",
 671         },
 672         {
 673                 .name   = "zoneskip",
 674                 .type   = FIO_OPT_STR_VAL,
 675                 .off1   = td_var_offset(zone_skip),
 676                 .help   = "Space between IO zones",
 677                 .def    = "0",
 678         },
 679         {
 680                 .name   = "lockmem",
 681                 .type   = FIO_OPT_STR_VAL,
 682                 .cb     = str_lockmem_cb,
 683                 .help   = "Lock down this amount of memory",
 684                 .def    = "0",
 685         },
 686         {
 687                 .name   = "rwmixcycle",
 688                 .type   = FIO_OPT_INT,
 689                 .off1   = td_var_offset(rwmixcycle),
 690                 .help   = "Cycle period for mixed read/write workloads (msec)",
 691                 .def    = "500",
 692         },
 693         {
 694                 .name   = "rwmixread",
 695                 .type   = FIO_OPT_INT,
 696                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 697                 .maxval = 100,
 698                 .help   = "Percentage of mixed workload that is reads",
 699                 .def    = "50",
 700         },
 701         {
 702                 .name   = "rwmixwrite",
 703                 .type   = FIO_OPT_INT,
 704                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 705                 .maxval = 100,
 706                 .help   = "Percentage of mixed workload that is writes",
 707                 .def    = "50",
 708         },
 709         {
 710                 .name   = "nice",
 711                 .type   = FIO_OPT_INT,
 712                 .off1   = td_var_offset(nice),
 713                 .help   = "Set job CPU nice value",
 714                 .minval = -19,
 715                 .maxval = 20,
 716                 .def    = "0",
 717         },
 718 #ifdef FIO_HAVE_IOPRIO
 719         {
 720                 .name   = "prio",
 721                 .type   = FIO_OPT_INT,
 722                 .cb     = str_prio_cb,
 723                 .help   = "Set job IO priority value",
 724                 .minval = 0,
 725                 .maxval = 7,
 726         },
 727         {
 728                 .name   = "prioclass",
 729                 .type   = FIO_OPT_INT,
 730                 .cb     = str_prioclass_cb,
 731                 .help   = "Set job IO priority class",
 732                 .minval = 0,
 733                 .maxval = 3,
 734         },
 735 #endif
 736         {
 737                 .name   = "thinktime",
 738                 .type   = FIO_OPT_INT,
 739                 .off1   = td_var_offset(thinktime),
 740                 .help   = "Idle time between IO buffers (usec)",
 741                 .def    = "0",
 742         },
 743         {
 744                 .name   = "thinktime_spin",
 745                 .type   = FIO_OPT_INT,
 746                 .off1   = td_var_offset(thinktime_spin),
 747                 .help   = "Start think time by spinning this amount (usec)",
 748                 .def    = "0",
 749         },
 750         {
 751                 .name   = "thinktime_blocks",
 752                 .type   = FIO_OPT_INT,
 753                 .off1   = td_var_offset(thinktime_blocks),
 754                 .help   = "IO buffer period between 'thinktime'",
 755                 .def    = "1",
 756         },
 757         {
 758                 .name   = "rate",
 759                 .type   = FIO_OPT_INT,
 760                 .off1   = td_var_offset(rate),
 761                 .help   = "Set bandwidth rate",
 762         },
 763         {
 764                 .name   = "ratemin",
 765                 .type   = FIO_OPT_INT,
 766                 .off1   = td_var_offset(ratemin),
 767                 .help   = "Job must meet this rate or it will be shutdown",
 768         },
 769         {
 770                 .name   = "rate_iops",
 771                 .type   = FIO_OPT_INT,
 772                 .off1   = td_var_offset(rate_iops),
 773                 .help   = "Limit IO used to this number of IO operations/sec",
 774         },
 775         {
 776                 .name   = "rate_iops_min",
 777                 .type   = FIO_OPT_INT,
 778                 .off1   = td_var_offset(rate_iops_min),
 779                 .help   = "Job must meet this rate or it will be shutdown",
 780         },
 781         {
 782                 .name   = "ratecycle",
 783                 .type   = FIO_OPT_INT,
 784                 .off1   = td_var_offset(ratecycle),
 785                 .help   = "Window average for rate limits (msec)",
 786                 .def    = "1000",
 787         },
 788         {
 789                 .name   = "invalidate",
 790                 .type   = FIO_OPT_BOOL,
 791                 .off1   = td_var_offset(invalidate_cache),
 792                 .help   = "Invalidate buffer/page cache prior to running job",
 793                 .def    = "1",
 794         },
 795         {
 796                 .name   = "sync",
 797                 .type   = FIO_OPT_BOOL,
 798                 .off1   = td_var_offset(sync_io),
 799                 .help   = "Use O_SYNC for buffered writes",
 800                 .def    = "0",
 801         },
 802         {
 803                 .name   = "bwavgtime",
 804                 .type   = FIO_OPT_INT,
 805                 .off1   = td_var_offset(bw_avg_time),
 806                 .help   = "Time window over which to calculate bandwidth (msec)",
 807                 .def    = "500",
 808         },
 809         {
 810                 .name   = "create_serialize",
 811                 .type   = FIO_OPT_BOOL,
 812                 .off1   = td_var_offset(create_serialize),
 813                 .help   = "Serialize creating of job files",
 814                 .def    = "1",
 815         },
 816         {
 817                 .name   = "create_fsync",
 818                 .type   = FIO_OPT_BOOL,
 819                 .off1   = td_var_offset(create_fsync),
 820                 .help   = "Fsync file after creation",
 821                 .def    = "1",
 822         },
 823         {
 824                 .name   = "cpuload",
 825                 .type   = FIO_OPT_INT,
 826                 .off1   = td_var_offset(cpuload),
 827                 .help   = "Use this percentage of CPU",
 828         },
 829         {
 830                 .name   = "cpuchunks",
 831                 .type   = FIO_OPT_INT,
 832                 .off1   = td_var_offset(cpucycle),
 833                 .help   = "Length of the CPU burn cycles (usecs)",
 834                 .def    = "50000",
 835         },
 836 #ifdef FIO_HAVE_CPU_AFFINITY
 837         {
 838                 .name   = "cpumask",
 839                 .type   = FIO_OPT_INT,
 840                 .cb     = str_cpumask_cb,
 841                 .help   = "CPU affinity mask",
 842         },
 843         {
 844                 .name   = "cpus_allowed",
 845                 .type   = FIO_OPT_STR,
 846                 .cb     = str_cpus_allowed_cb,
 847                 .help   = "Set CPUs allowed",
 848         },
 849 #endif
 850         {
 851                 .name   = "end_fsync",
 852                 .type   = FIO_OPT_BOOL,
 853                 .off1   = td_var_offset(end_fsync),
 854                 .help   = "Include fsync at the end of job",
 855                 .def    = "0",
 856         },
 857         {
 858                 .name   = "fsync_on_close",
 859                 .type   = FIO_OPT_BOOL,
 860                 .off1   = td_var_offset(fsync_on_close),
 861                 .help   = "fsync files on close",
 862                 .def    = "0",
 863         },
 864         {
 865                 .name   = "unlink",
 866                 .type   = FIO_OPT_BOOL,
 867                 .off1   = td_var_offset(unlink),
 868                 .help   = "Unlink created files after job has completed",
 869                 .def    = "0",
 870         },
 871         {
 872                 .name   = "exitall",
 873                 .type   = FIO_OPT_STR_SET,
 874                 .cb     = str_exitall_cb,
 875                 .help   = "Terminate all jobs when one exits",
 876         },
 877         {
 878                 .name   = "stonewall",
 879                 .type   = FIO_OPT_STR_SET,
 880                 .off1   = td_var_offset(stonewall),
 881                 .help   = "Insert a hard barrier between this job and previous",
 882         },
 883         {
 884                 .name   = "new_group",
 885                 .type   = FIO_OPT_STR_SET,
 886                 .off1   = td_var_offset(new_group),
 887                 .help   = "Mark the start of a new group (for reporting)",
 888         },
 889         {
 890                 .name   = "thread",
 891                 .type   = FIO_OPT_STR_SET,
 892                 .off1   = td_var_offset(use_thread),
 893                 .help   = "Use threads instead of forks",
 894         },
 895         {
 896                 .name   = "write_bw_log",
 897                 .type   = FIO_OPT_STR_SET,
 898                 .off1   = td_var_offset(write_bw_log),
 899                 .help   = "Write log of bandwidth during run",
 900         },
 901         {
 902                 .name   = "write_lat_log",
 903                 .type   = FIO_OPT_STR_SET,
 904                 .off1   = td_var_offset(write_lat_log),
 905                 .help   = "Write log of latency during run",
 906         },
 907         {
 908                 .name   = "hugepage-size",
 909                 .type   = FIO_OPT_STR_VAL,
 910                 .off1   = td_var_offset(hugepage_size),
 911                 .help   = "When using hugepages, specify size of each page",
 912                 .def    = __stringify(FIO_HUGE_PAGE),
 913         },
 914         {
 915                 .name   = "group_reporting",
 916                 .type   = FIO_OPT_STR_SET,
 917                 .off1   = td_var_offset(group_reporting),
 918                 .help   = "Do reporting on a per-group basis",
 919         },
 920         {
 921                 .name   = "zero_buffers",
 922                 .type   = FIO_OPT_STR_SET,
 923                 .off1   = td_var_offset(zero_buffers),
 924                 .help   = "Init IO buffers to all zeroes",
 925         },
 926 #ifdef FIO_HAVE_DISK_UTIL
 927         {
 928                 .name   = "disk_util",
 929                 .type   = FIO_OPT_BOOL,
 930                 .off1   = td_var_offset(do_disk_util),
 931                 .help   = "Log disk utilization stats",
 932                 .def    = "1",
 933         },
 934 #endif
 935         {
 936                 .name = NULL,
 937         },
 938 };
 939
 940 void fio_options_dup_and_init(struct option *long_options)
 941 {
 942         struct fio_option *o;
 943         unsigned int i;
 944
 945         options_init(options);
 946
 947         i = 0;
 948         while (long_options[i].name)
 949                 i++;
 950
 951         o = &options[0];
 952         while (o->name) {
 953                 long_options[i].name = o->name;
 954                 long_options[i].val = FIO_GETOPT_JOB;
 955                 if (o->type == FIO_OPT_STR_SET)
 956                         long_options[i].has_arg = no_argument;
 957                 else
 958                         long_options[i].has_arg = required_argument;
 959
 960                 i++;
 961                 o++;
 962                 assert(i < FIO_NR_OPTIONS);
 963         }
 964 }
 965
 966 int fio_option_parse(struct thread_data *td, const char *opt)
 967 {
 968         return parse_option(opt, options, td);
 969 }
 970
 971 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
 972 {
 973         return parse_cmd_option(opt, val, options, td);
 974 }
 975
 976 void fio_fill_default_options(struct thread_data *td)
 977 {
 978         fill_default_options(td, options);
 979 }
 980
 981 int fio_show_option_help(const char *opt)
 982 {
 983         return show_cmd_help(options, opt);
 984 }
 985
 986 static void __options_mem(struct thread_data *td, int alloc)
 987 {
 988         struct thread_options *o = &td->o;
 989         struct fio_option *opt;
 990         char **ptr;
 991         int i;
 992
 993         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
 994                 if (opt->type != FIO_OPT_STR_STORE)
 995                         continue;
 996
 997                 ptr = (void *) o + opt->off1;
 998                 if (*ptr) {
 999                         if (alloc)
1000                                 *ptr = strdup(*ptr);
1001                         else {
1002                                 free(*ptr);
1003                                 *ptr = NULL;
1004                         }
1005                 }
1006         }
1007 }
1008
1009 /*
1010  * dupe FIO_OPT_STR_STORE options
1011  */
1012 void options_mem_dupe(struct thread_data *td)
1013 {
1014         __options_mem(td, 1);
1015 }
1016
1017 void options_mem_free(struct thread_data fio_unused *td)
1018 {
1019 #if 0
1020         __options_mem(td, 0);
1021 #endif
1022 }