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