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 #include "fls.h"
  12
  13 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  14
  15 /*
  16  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  17  */
  18 static char *get_opt_postfix(const char *str)
  19 {
  20         char *p = strstr(str, ":");
  21
  22         if (!p)
  23                 return NULL;
  24
  25         p++;
  26         strip_blank_front(&p);
  27         strip_blank_end(p);
  28         return strdup(p);
  29 }
  30
  31 static int str_rw_cb(void *data, const char *str)
  32 {
  33         struct thread_data *td = data;
  34         char *nr = get_opt_postfix(str);
  35
  36         td->o.ddir_nr = 1;
  37         if (nr)
  38                 td->o.ddir_nr = atoi(nr);
  39
  40         return 0;
  41 }
  42
  43 static int str_mem_cb(void *data, const char *mem)
  44 {
  45         struct thread_data *td = data;
  46
  47         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
  48                 td->mmapfile = get_opt_postfix(mem);
  49                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
  50                         log_err("fio: mmaphuge:/path/to/file\n");
  51                         return 1;
  52                 }
  53         }
  54
  55         return 0;
  56 }
  57
  58 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
  59 {
  60         mlock_size = *val;
  61         return 0;
  62 }
  63
  64 #ifdef FIO_HAVE_IOPRIO
  65 static int str_prioclass_cb(void *data, unsigned int *val)
  66 {
  67         struct thread_data *td = data;
  68         unsigned short mask;
  69
  70         /*
  71          * mask off old class bits, str_prio_cb() may have set a default class
  72          */
  73         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
  74         td->ioprio &= mask;
  75
  76         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
  77         return 0;
  78 }
  79
  80 static int str_prio_cb(void *data, unsigned int *val)
  81 {
  82         struct thread_data *td = data;
  83
  84         td->ioprio |= *val;
  85
  86         /*
  87          * If no class is set, assume BE
  88          */
  89         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
  90                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
  91
  92         return 0;
  93 }
  94 #endif
  95
  96 static int str_exitall_cb(void)
  97 {
  98         exitall_on_terminate = 1;
  99         return 0;
 100 }
 101
 102 #ifdef FIO_HAVE_CPU_AFFINITY
 103 static int str_cpumask_cb(void *data, unsigned int *val)
 104 {
 105         struct thread_data *td = data;
 106         unsigned int i;
 107
 108         CPU_ZERO(&td->o.cpumask);
 109
 110         for (i = 0; i < sizeof(int) * 8; i++)
 111                 if ((1 << i) & *val)
 112                         CPU_SET(*val, &td->o.cpumask);
 113
 114         td->o.cpumask_set = 1;
 115         return 0;
 116 }
 117
 118 static int str_cpus_allowed_cb(void *data, const char *input)
 119 {
 120         struct thread_data *td = data;
 121         char *cpu, *str, *p;
 122
 123         CPU_ZERO(&td->o.cpumask);
 124
 125         p = str = strdup(input);
 126
 127         strip_blank_front(&str);
 128         strip_blank_end(str);
 129
 130         while ((cpu = strsep(&str, ",")) != NULL) {
 131                 if (!strlen(cpu))
 132                         break;
 133                 CPU_SET(atoi(cpu), &td->o.cpumask);
 134         }
 135
 136         free(p);
 137         td->o.cpumask_set = 1;
 138         exit(0);
 139         return 0;
 140 }
 141 #endif
 142
 143 static int str_fst_cb(void *data, const char *str)
 144 {
 145         struct thread_data *td = data;
 146         char *nr = get_opt_postfix(str);
 147
 148         td->file_service_nr = 1;
 149         if (nr)
 150                 td->file_service_nr = atoi(nr);
 151
 152         return 0;
 153 }
 154
 155 static int str_filename_cb(void *data, const char *input)
 156 {
 157         struct thread_data *td = data;
 158         char *fname, *str, *p;
 159
 160         p = str = strdup(input);
 161
 162         strip_blank_front(&str);
 163         strip_blank_end(str);
 164
 165         if (!td->files_index)
 166                 td->o.nr_files = 0;
 167
 168         while ((fname = strsep(&str, ":")) != NULL) {
 169                 if (!strlen(fname))
 170                         break;
 171                 add_file(td, fname);
 172                 td->o.nr_files++;
 173         }
 174
 175         free(p);
 176         return 0;
 177 }
 178
 179 static int str_directory_cb(void *data, const char fio_unused *str)
 180 {
 181         struct thread_data *td = data;
 182         struct stat sb;
 183
 184         if (lstat(td->o.directory, &sb) < 0) {
 185                 log_err("fio: %s is not a directory\n", td->o.directory);
 186                 td_verror(td, errno, "lstat");
 187                 return 1;
 188         }
 189         if (!S_ISDIR(sb.st_mode)) {
 190                 log_err("fio: %s is not a directory\n", td->o.directory);
 191                 return 1;
 192         }
 193
 194         return 0;
 195 }
 196
 197 static int str_opendir_cb(void *data, const char fio_unused *str)
 198 {
 199         struct thread_data *td = data;
 200
 201         if (!td->files_index)
 202                 td->o.nr_files = 0;
 203
 204         return add_dir_files(td, td->o.opendir);
 205 }
 206
 207 static int str_verify_offset_cb(void *data, unsigned int *off)
 208 {
 209         struct thread_data *td = data;
 210
 211         if (*off && *off < sizeof(struct verify_header)) {
 212                 log_err("fio: verify_offset too small\n");
 213                 return 1;
 214         }
 215
 216         td->o.verify_offset = *off;
 217         return 0;
 218 }
 219
 220 static int str_verify_pattern_cb(void *data, unsigned int *off)
 221 {
 222         struct thread_data *td = data;
 223         unsigned int msb;
 224
 225         msb = fls(*off);
 226         if (msb <= 8)
 227                 td->o.verify_pattern_bytes = 1;
 228         else if (msb <= 16)
 229                 td->o.verify_pattern_bytes = 2;
 230         else if (msb <= 24)
 231                 td->o.verify_pattern_bytes = 3;
 232         else
 233                 td->o.verify_pattern_bytes = 4;
 234
 235         td->o.verify_pattern = *off;
 236         return 0;
 237 }
 238
 239 #define __stringify_1(x)        #x
 240 #define __stringify(x)          __stringify_1(x)
 241
 242 /*
 243  * Map of job/command line options
 244  */
 245 static struct fio_option options[] = {
 246         {
 247                 .name   = "description",
 248                 .type   = FIO_OPT_STR_STORE,
 249                 .off1   = td_var_offset(description),
 250                 .help   = "Text job description",
 251         },
 252         {
 253                 .name   = "name",
 254                 .type   = FIO_OPT_STR_STORE,
 255                 .off1   = td_var_offset(name),
 256                 .help   = "Name of this job",
 257         },
 258         {
 259                 .name   = "directory",
 260                 .type   = FIO_OPT_STR_STORE,
 261                 .off1   = td_var_offset(directory),
 262                 .cb     = str_directory_cb,
 263                 .help   = "Directory to store files in",
 264         },
 265         {
 266                 .name   = "filename",
 267                 .type   = FIO_OPT_STR_STORE,
 268                 .off1   = td_var_offset(filename),
 269                 .cb     = str_filename_cb,
 270                 .help   = "File(s) to use for the workload",
 271         },
 272         {
 273                 .name   = "opendir",
 274                 .type   = FIO_OPT_STR_STORE,
 275                 .off1   = td_var_offset(opendir),
 276                 .cb     = str_opendir_cb,
 277                 .help   = "Recursively add files from this directory and down",
 278         },
 279         {
 280                 .name   = "rw",
 281                 .alias  = "readwrite",
 282                 .type   = FIO_OPT_STR,
 283                 .cb     = str_rw_cb,
 284                 .off1   = td_var_offset(td_ddir),
 285                 .help   = "IO direction",
 286                 .def    = "read",
 287                 .posval = {
 288                           { .ival = "read",
 289                             .oval = TD_DDIR_READ,
 290                             .help = "Sequential read",
 291                           },
 292                           { .ival = "write",
 293                             .oval = TD_DDIR_WRITE,
 294                             .help = "Sequential write",
 295                           },
 296                           { .ival = "randread",
 297                             .oval = TD_DDIR_RANDREAD,
 298                             .help = "Random read",
 299                           },
 300                           { .ival = "randwrite",
 301                             .oval = TD_DDIR_RANDWRITE,
 302                             .help = "Random write",
 303                           },
 304                           { .ival = "rw",
 305                             .oval = TD_DDIR_RW,
 306                             .help = "Sequential read and write mix",
 307                           },
 308                           { .ival = "randrw",
 309                             .oval = TD_DDIR_RANDRW,
 310                             .help = "Random read and write mix"
 311                           },
 312                 },
 313         },
 314         {
 315                 .name   = "fadvise_hint",
 316                 .type   = FIO_OPT_BOOL,
 317                 .off1   = td_var_offset(fadvise_hint),
 318                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 319                 .def    = "1",
 320         },
 321         {
 322                 .name   = "ioengine",
 323                 .type   = FIO_OPT_STR_STORE,
 324                 .off1   = td_var_offset(ioengine),
 325                 .help   = "IO engine to use",
 326                 .def    = "sync",
 327                 .posval = {
 328                           { .ival = "sync",
 329                             .help = "Use read/write",
 330                           },
 331 #ifdef FIO_HAVE_LIBAIO
 332                           { .ival = "libaio",
 333                             .help = "Linux native asynchronous IO",
 334                           },
 335 #endif
 336 #ifdef FIO_HAVE_POSIXAIO
 337                           { .ival = "posixaio",
 338                             .help = "POSIX asynchronous IO",
 339                           },
 340 #endif
 341                           { .ival = "mmap",
 342                             .help = "Memory mapped IO",
 343                           },
 344 #ifdef FIO_HAVE_SPLICE
 345                           { .ival = "splice",
 346                             .help = "splice/vmsplice based IO",
 347                           },
 348                           { .ival = "netsplice",
 349                             .help = "splice/vmsplice to/from the network",
 350                           },
 351 #endif
 352 #ifdef FIO_HAVE_SGIO
 353                           { .ival = "sg",
 354                             .help = "SCSI generic v3 IO",
 355                           },
 356 #endif
 357                           { .ival = "null",
 358                             .help = "Testing engine (no data transfer)",
 359                           },
 360                           { .ival = "net",
 361                             .help = "Network IO",
 362                           },
 363 #ifdef FIO_HAVE_SYSLET
 364                           { .ival = "syslet-rw",
 365                             .help = "syslet enabled async pread/pwrite IO",
 366                           },
 367 #endif
 368                           { .ival = "cpuio",
 369                             .help = "CPU cycler burner engine",
 370                           },
 371 #ifdef FIO_HAVE_GUASI
 372                           { .ival = "guasi",
 373                             .help = "GUASI IO engine",
 374                           },
 375 #endif
 376                           { .ival = "external",
 377                             .help = "Load external engine (append name)",
 378                           },
 379                 },
 380         },
 381         {
 382                 .name   = "iodepth",
 383                 .type   = FIO_OPT_INT,
 384                 .off1   = td_var_offset(iodepth),
 385                 .help   = "Amount of IO buffers to keep in flight",
 386                 .def    = "1",
 387         },
 388         {
 389                 .name   = "iodepth_batch",
 390                 .type   = FIO_OPT_INT,
 391                 .off1   = td_var_offset(iodepth_batch),
 392                 .help   = "Number of IO to submit in one go",
 393                 .parent = "iodepth",
 394         },
 395         {
 396                 .name   = "iodepth_low",
 397                 .type   = FIO_OPT_INT,
 398                 .off1   = td_var_offset(iodepth_low),
 399                 .help   = "Low water mark for queuing depth",
 400                 .parent = "iodepth",
 401         },
 402         {
 403                 .name   = "size",
 404                 .type   = FIO_OPT_STR_VAL,
 405                 .off1   = td_var_offset(size),
 406                 .minval = 1,
 407                 .help   = "Total size of device or files",
 408         },
 409         {
 410                 .name   = "filesize",
 411                 .type   = FIO_OPT_STR_VAL,
 412                 .off1   = td_var_offset(file_size_low),
 413                 .off2   = td_var_offset(file_size_high),
 414                 .minval = 1,
 415                 .help   = "Size of individual files",
 416         },
 417         {
 418                 .name   = "bs",
 419                 .alias  = "blocksize",
 420                 .type   = FIO_OPT_STR_VAL_INT,
 421                 .off1   = td_var_offset(bs[DDIR_READ]),
 422                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 423                 .minval = 1,
 424                 .help   = "Block size unit",
 425                 .def    = "4k",
 426         },
 427         {
 428                 .name   = "bsrange",
 429                 .alias  = "blocksize_range",
 430                 .type   = FIO_OPT_RANGE,
 431                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 432                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 433                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 434                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 435                 .minval = 1,
 436                 .help   = "Set block size range (in more detail than bs)",
 437         },
 438         {
 439                 .name   = "bs_unaligned",
 440                 .alias  = "blocksize_unaligned",
 441                 .type   = FIO_OPT_STR_SET,
 442                 .off1   = td_var_offset(bs_unaligned),
 443                 .help   = "Don't sector align IO buffer sizes",
 444         },
 445         {
 446                 .name   = "offset",
 447                 .type   = FIO_OPT_STR_VAL,
 448                 .off1   = td_var_offset(start_offset),
 449                 .help   = "Start IO from this offset",
 450                 .def    = "0",
 451         },
 452         {
 453                 .name   = "randrepeat",
 454                 .type   = FIO_OPT_BOOL,
 455                 .off1   = td_var_offset(rand_repeatable),
 456                 .help   = "Use repeatable random IO pattern",
 457                 .def    = "1",
 458         },
 459         {
 460                 .name   = "norandommap",
 461                 .type   = FIO_OPT_STR_SET,
 462                 .off1   = td_var_offset(norandommap),
 463                 .help   = "Accept potential duplicate random blocks",
 464         },
 465         {
 466                 .name   = "nrfiles",
 467                 .type   = FIO_OPT_INT,
 468                 .off1   = td_var_offset(nr_files),
 469                 .help   = "Split job workload between this number of files",
 470                 .def    = "1",
 471         },
 472         {
 473                 .name   = "openfiles",
 474                 .type   = FIO_OPT_INT,
 475                 .off1   = td_var_offset(open_files),
 476                 .help   = "Number of files to keep open at the same time",
 477         },
 478         {
 479                 .name   = "file_service_type",
 480                 .type   = FIO_OPT_STR,
 481                 .cb     = str_fst_cb,
 482                 .off1   = td_var_offset(file_service_type),
 483                 .help   = "How to select which file to service next",
 484                 .def    = "roundrobin",
 485                 .posval = {
 486                           { .ival = "random",
 487                             .oval = FIO_FSERVICE_RANDOM,
 488                             .help = "Choose a file at random",
 489                           },
 490                           { .ival = "roundrobin",
 491                             .oval = FIO_FSERVICE_RR,
 492                             .help = "Round robin select files",
 493                           },
 494                 },
 495         },
 496         {
 497                 .name   = "fsync",
 498                 .type   = FIO_OPT_INT,
 499                 .off1   = td_var_offset(fsync_blocks),
 500                 .help   = "Issue fsync for writes every given number of blocks",
 501                 .def    = "0",
 502         },
 503         {
 504                 .name   = "direct",
 505                 .type   = FIO_OPT_BOOL,
 506                 .off1   = td_var_offset(odirect),
 507                 .help   = "Use O_DIRECT IO (negates buffered)",
 508                 .def    = "0",
 509         },
 510         {
 511                 .name   = "buffered",
 512                 .type   = FIO_OPT_BOOL,
 513                 .off1   = td_var_offset(odirect),
 514                 .neg    = 1,
 515                 .help   = "Use buffered IO (negates direct)",
 516                 .def    = "1",
 517         },
 518         {
 519                 .name   = "overwrite",
 520                 .type   = FIO_OPT_BOOL,
 521                 .off1   = td_var_offset(overwrite),
 522                 .help   = "When writing, set whether to overwrite current data",
 523                 .def    = "0",
 524         },
 525         {
 526                 .name   = "loops",
 527                 .type   = FIO_OPT_INT,
 528                 .off1   = td_var_offset(loops),
 529                 .help   = "Number of times to run the job",
 530                 .def    = "1",
 531         },
 532         {
 533                 .name   = "numjobs",
 534                 .type   = FIO_OPT_INT,
 535                 .off1   = td_var_offset(numjobs),
 536                 .help   = "Duplicate this job this many times",
 537                 .def    = "1",
 538         },
 539         {
 540                 .name   = "startdelay",
 541                 .type   = FIO_OPT_INT,
 542                 .off1   = td_var_offset(start_delay),
 543                 .help   = "Only start job when this period has passed",
 544                 .def    = "0",
 545         },
 546         {
 547                 .name   = "runtime",
 548                 .alias  = "timeout",
 549                 .type   = FIO_OPT_STR_VAL_TIME,
 550                 .off1   = td_var_offset(timeout),
 551                 .help   = "Stop workload when this amount of time has passed",
 552                 .def    = "0",
 553         },
 554         {
 555                 .name   = "time_based",
 556                 .type   = FIO_OPT_STR_SET,
 557                 .off1   = td_var_offset(time_based),
 558                 .help   = "Keep running until runtime/timeout is met",
 559         },
 560         {
 561                 .name   = "mem",
 562                 .alias  = "iomem",
 563                 .type   = FIO_OPT_STR,
 564                 .cb     = str_mem_cb,
 565                 .off1   = td_var_offset(mem_type),
 566                 .help   = "Backing type for IO buffers",
 567                 .def    = "malloc",
 568                 .posval = {
 569                           { .ival = "malloc",
 570                             .oval = MEM_MALLOC,
 571                             .help = "Use malloc(3) for IO buffers",
 572                           },
 573                           { .ival = "shm",
 574                             .oval = MEM_SHM,
 575                             .help = "Use shared memory segments for IO buffers",
 576                           },
 577 #ifdef FIO_HAVE_HUGETLB
 578                           { .ival = "shmhuge",
 579                             .oval = MEM_SHMHUGE,
 580                             .help = "Like shm, but use huge pages",
 581                           },
 582 #endif
 583                           { .ival = "mmap",
 584                             .oval = MEM_MMAP,
 585                             .help = "Use mmap(2) (file or anon) for IO buffers",
 586                           },
 587 #ifdef FIO_HAVE_HUGETLB
 588                           { .ival = "mmaphuge",
 589                             .oval = MEM_MMAPHUGE,
 590                             .help = "Like mmap, but use huge pages",
 591                           },
 592 #endif
 593                   },
 594         },
 595         {
 596                 .name   = "verify",
 597                 .type   = FIO_OPT_STR,
 598                 .off1   = td_var_offset(verify),
 599                 .help   = "Verify data written",
 600                 .def    = "0",
 601                 .posval = {
 602                           { .ival = "0",
 603                             .oval = VERIFY_NONE,
 604                             .help = "Don't do IO verification",
 605                           },
 606                           { .ival = "md5",
 607                             .oval = VERIFY_MD5,
 608                             .help = "Use md5 checksums for verification",
 609                           },
 610                           { .ival = "crc64",
 611                             .oval = VERIFY_CRC64,
 612                             .help = "Use crc64 checksums for verification",
 613                           },
 614                           { .ival = "crc32",
 615                             .oval = VERIFY_CRC32,
 616                             .help = "Use crc32 checksums for verification",
 617                           },
 618                           { .ival = "crc16",
 619                             .oval = VERIFY_CRC16,
 620                             .help = "Use crc16 checksums for verification",
 621                           },
 622                           { .ival = "crc7",
 623                             .oval = VERIFY_CRC7,
 624                             .help = "Use crc7 checksums for verification",
 625                           },
 626                           { .ival = "sha256",
 627                             .oval = VERIFY_SHA256,
 628                             .help = "Use sha256 checksums for verification",
 629                           },
 630                           { .ival = "sha512",
 631                             .oval = VERIFY_SHA512,
 632                             .help = "Use sha512 checksums for verification",
 633                           },
 634                           {
 635                             .ival = "null",
 636                             .oval = VERIFY_NULL,
 637                             .help = "Pretend to verify",
 638                           },
 639                 },
 640         },
 641         {
 642                 .name   = "verifysort",
 643                 .type   = FIO_OPT_BOOL,
 644                 .off1   = td_var_offset(verifysort),
 645                 .help   = "Sort written verify blocks for read back",
 646                 .def    = "1",
 647         },
 648         {
 649                 .name   = "verify_interval",
 650                 .type   = FIO_OPT_STR_VAL_INT,
 651                 .off1   = td_var_offset(verify_interval),
 652                 .minval = 2 * sizeof(struct verify_header),
 653                 .help   = "Store verify buffer header every N bytes",
 654                 .parent = "verify",
 655         },
 656         {
 657                 .name   = "verify_offset",
 658                 .type   = FIO_OPT_STR_VAL_INT,
 659                 .help   = "Offset verify header location by N bytes",
 660                 .def    = "0",
 661                 .cb     = str_verify_offset_cb,
 662                 .parent = "verify",
 663         },
 664         {
 665                 .name   = "verify_pattern",
 666                 .type   = FIO_OPT_INT,
 667                 .cb     = str_verify_pattern_cb,
 668                 .help   = "Fill pattern for IO buffers",
 669                 .parent = "verify",
 670         },
 671         {
 672                 .name   = "write_iolog",
 673                 .type   = FIO_OPT_STR_STORE,
 674                 .off1   = td_var_offset(write_iolog_file),
 675                 .help   = "Store IO pattern to file",
 676         },
 677         {
 678                 .name   = "read_iolog",
 679                 .type   = FIO_OPT_STR_STORE,
 680                 .off1   = td_var_offset(read_iolog_file),
 681                 .help   = "Playback IO pattern from file",
 682         },
 683         {
 684                 .name   = "exec_prerun",
 685                 .type   = FIO_OPT_STR_STORE,
 686                 .off1   = td_var_offset(exec_prerun),
 687                 .help   = "Execute this file prior to running job",
 688         },
 689         {
 690                 .name   = "exec_postrun",
 691                 .type   = FIO_OPT_STR_STORE,
 692                 .off1   = td_var_offset(exec_postrun),
 693                 .help   = "Execute this file after running job",
 694         },
 695 #ifdef FIO_HAVE_IOSCHED_SWITCH
 696         {
 697                 .name   = "ioscheduler",
 698                 .type   = FIO_OPT_STR_STORE,
 699                 .off1   = td_var_offset(ioscheduler),
 700                 .help   = "Use this IO scheduler on the backing device",
 701         },
 702 #endif
 703         {
 704                 .name   = "zonesize",
 705                 .type   = FIO_OPT_STR_VAL,
 706                 .off1   = td_var_offset(zone_size),
 707                 .help   = "Give size of an IO zone",
 708                 .def    = "0",
 709         },
 710         {
 711                 .name   = "zoneskip",
 712                 .type   = FIO_OPT_STR_VAL,
 713                 .off1   = td_var_offset(zone_skip),
 714                 .help   = "Space between IO zones",
 715                 .def    = "0",
 716         },
 717         {
 718                 .name   = "lockmem",
 719                 .type   = FIO_OPT_STR_VAL,
 720                 .cb     = str_lockmem_cb,
 721                 .help   = "Lock down this amount of memory",
 722                 .def    = "0",
 723         },
 724         {
 725                 .name   = "rwmixread",
 726                 .type   = FIO_OPT_INT,
 727                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 728                 .maxval = 100,
 729                 .help   = "Percentage of mixed workload that is reads",
 730                 .def    = "50",
 731         },
 732         {
 733                 .name   = "rwmixwrite",
 734                 .type   = FIO_OPT_INT,
 735                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 736                 .maxval = 100,
 737                 .help   = "Percentage of mixed workload that is writes",
 738                 .def    = "50",
 739         },
 740         {
 741                 .name   = "rwmixcycle",
 742                 .type   = FIO_OPT_INT,
 743                 .off1   = td_var_offset(rwmixcycle),
 744                 .help   = "Cycle period for mixed read/write workloads (msec)",
 745                 .def    = "500",
 746                 .parent = "rwmixread",
 747         },
 748         {
 749                 .name   = "nice",
 750                 .type   = FIO_OPT_INT,
 751                 .off1   = td_var_offset(nice),
 752                 .help   = "Set job CPU nice value",
 753                 .minval = -19,
 754                 .maxval = 20,
 755                 .def    = "0",
 756         },
 757 #ifdef FIO_HAVE_IOPRIO
 758         {
 759                 .name   = "prio",
 760                 .type   = FIO_OPT_INT,
 761                 .cb     = str_prio_cb,
 762                 .help   = "Set job IO priority value",
 763                 .minval = 0,
 764                 .maxval = 7,
 765         },
 766         {
 767                 .name   = "prioclass",
 768                 .type   = FIO_OPT_INT,
 769                 .cb     = str_prioclass_cb,
 770                 .help   = "Set job IO priority class",
 771                 .minval = 0,
 772                 .maxval = 3,
 773         },
 774 #endif
 775         {
 776                 .name   = "thinktime",
 777                 .type   = FIO_OPT_INT,
 778                 .off1   = td_var_offset(thinktime),
 779                 .help   = "Idle time between IO buffers (usec)",
 780                 .def    = "0",
 781         },
 782         {
 783                 .name   = "thinktime_spin",
 784                 .type   = FIO_OPT_INT,
 785                 .off1   = td_var_offset(thinktime_spin),
 786                 .help   = "Start think time by spinning this amount (usec)",
 787                 .def    = "0",
 788                 .parent = "thinktime",
 789         },
 790         {
 791                 .name   = "thinktime_blocks",
 792                 .type   = FIO_OPT_INT,
 793                 .off1   = td_var_offset(thinktime_blocks),
 794                 .help   = "IO buffer period between 'thinktime'",
 795                 .def    = "1",
 796                 .parent = "thinktime",
 797         },
 798         {
 799                 .name   = "rate",
 800                 .type   = FIO_OPT_INT,
 801                 .off1   = td_var_offset(rate),
 802                 .help   = "Set bandwidth rate",
 803         },
 804         {
 805                 .name   = "ratemin",
 806                 .type   = FIO_OPT_INT,
 807                 .off1   = td_var_offset(ratemin),
 808                 .help   = "Job must meet this rate or it will be shutdown",
 809                 .parent = "rate",
 810         },
 811         {
 812                 .name   = "rate_iops",
 813                 .type   = FIO_OPT_INT,
 814                 .off1   = td_var_offset(rate_iops),
 815                 .help   = "Limit IO used to this number of IO operations/sec",
 816         },
 817         {
 818                 .name   = "rate_iops_min",
 819                 .type   = FIO_OPT_INT,
 820                 .off1   = td_var_offset(rate_iops_min),
 821                 .help   = "Job must meet this rate or it will be shutdown",
 822                 .parent = "rate_iops",
 823         },
 824         {
 825                 .name   = "ratecycle",
 826                 .type   = FIO_OPT_INT,
 827                 .off1   = td_var_offset(ratecycle),
 828                 .help   = "Window average for rate limits (msec)",
 829                 .def    = "1000",
 830                 .parent = "rate",
 831         },
 832         {
 833                 .name   = "invalidate",
 834                 .type   = FIO_OPT_BOOL,
 835                 .off1   = td_var_offset(invalidate_cache),
 836                 .help   = "Invalidate buffer/page cache prior to running job",
 837                 .def    = "1",
 838         },
 839         {
 840                 .name   = "sync",
 841                 .type   = FIO_OPT_BOOL,
 842                 .off1   = td_var_offset(sync_io),
 843                 .help   = "Use O_SYNC for buffered writes",
 844                 .def    = "0",
 845         },
 846         {
 847                 .name   = "bwavgtime",
 848                 .type   = FIO_OPT_INT,
 849                 .off1   = td_var_offset(bw_avg_time),
 850                 .help   = "Time window over which to calculate bandwidth (msec)",
 851                 .def    = "500",
 852         },
 853         {
 854                 .name   = "create_serialize",
 855                 .type   = FIO_OPT_BOOL,
 856                 .off1   = td_var_offset(create_serialize),
 857                 .help   = "Serialize creating of job files",
 858                 .def    = "1",
 859         },
 860         {
 861                 .name   = "create_fsync",
 862                 .type   = FIO_OPT_BOOL,
 863                 .off1   = td_var_offset(create_fsync),
 864                 .help   = "Fsync file after creation",
 865                 .def    = "1",
 866         },
 867         {
 868                 .name   = "cpuload",
 869                 .type   = FIO_OPT_INT,
 870                 .off1   = td_var_offset(cpuload),
 871                 .help   = "Use this percentage of CPU",
 872         },
 873         {
 874                 .name   = "cpuchunks",
 875                 .type   = FIO_OPT_INT,
 876                 .off1   = td_var_offset(cpucycle),
 877                 .help   = "Length of the CPU burn cycles (usecs)",
 878                 .def    = "50000",
 879         },
 880 #ifdef FIO_HAVE_CPU_AFFINITY
 881         {
 882                 .name   = "cpumask",
 883                 .type   = FIO_OPT_INT,
 884                 .cb     = str_cpumask_cb,
 885                 .help   = "CPU affinity mask",
 886         },
 887         {
 888                 .name   = "cpus_allowed",
 889                 .type   = FIO_OPT_STR,
 890                 .cb     = str_cpus_allowed_cb,
 891                 .help   = "Set CPUs allowed",
 892         },
 893 #endif
 894         {
 895                 .name   = "end_fsync",
 896                 .type   = FIO_OPT_BOOL,
 897                 .off1   = td_var_offset(end_fsync),
 898                 .help   = "Include fsync at the end of job",
 899                 .def    = "0",
 900         },
 901         {
 902                 .name   = "fsync_on_close",
 903                 .type   = FIO_OPT_BOOL,
 904                 .off1   = td_var_offset(fsync_on_close),
 905                 .help   = "fsync files on close",
 906                 .def    = "0",
 907         },
 908         {
 909                 .name   = "unlink",
 910                 .type   = FIO_OPT_BOOL,
 911                 .off1   = td_var_offset(unlink),
 912                 .help   = "Unlink created files after job has completed",
 913                 .def    = "0",
 914         },
 915         {
 916                 .name   = "exitall",
 917                 .type   = FIO_OPT_STR_SET,
 918                 .cb     = str_exitall_cb,
 919                 .help   = "Terminate all jobs when one exits",
 920         },
 921         {
 922                 .name   = "stonewall",
 923                 .type   = FIO_OPT_STR_SET,
 924                 .off1   = td_var_offset(stonewall),
 925                 .help   = "Insert a hard barrier between this job and previous",
 926         },
 927         {
 928                 .name   = "new_group",
 929                 .type   = FIO_OPT_STR_SET,
 930                 .off1   = td_var_offset(new_group),
 931                 .help   = "Mark the start of a new group (for reporting)",
 932         },
 933         {
 934                 .name   = "thread",
 935                 .type   = FIO_OPT_STR_SET,
 936                 .off1   = td_var_offset(use_thread),
 937                 .help   = "Use threads instead of forks",
 938         },
 939         {
 940                 .name   = "write_bw_log",
 941                 .type   = FIO_OPT_STR_SET,
 942                 .off1   = td_var_offset(write_bw_log),
 943                 .help   = "Write log of bandwidth during run",
 944         },
 945         {
 946                 .name   = "write_lat_log",
 947                 .type   = FIO_OPT_STR_SET,
 948                 .off1   = td_var_offset(write_lat_log),
 949                 .help   = "Write log of latency during run",
 950         },
 951         {
 952                 .name   = "hugepage-size",
 953                 .type   = FIO_OPT_STR_VAL,
 954                 .off1   = td_var_offset(hugepage_size),
 955                 .help   = "When using hugepages, specify size of each page",
 956                 .def    = __stringify(FIO_HUGE_PAGE),
 957         },
 958         {
 959                 .name   = "group_reporting",
 960                 .type   = FIO_OPT_STR_SET,
 961                 .off1   = td_var_offset(group_reporting),
 962                 .help   = "Do reporting on a per-group basis",
 963         },
 964         {
 965                 .name   = "zero_buffers",
 966                 .type   = FIO_OPT_STR_SET,
 967                 .off1   = td_var_offset(zero_buffers),
 968                 .help   = "Init IO buffers to all zeroes",
 969         },
 970 #ifdef FIO_HAVE_DISK_UTIL
 971         {
 972                 .name   = "disk_util",
 973                 .type   = FIO_OPT_BOOL,
 974                 .off1   = td_var_offset(do_disk_util),
 975                 .help   = "Log disk utilization stats",
 976                 .def    = "1",
 977         },
 978 #endif
 979         {
 980                 .name = NULL,
 981         },
 982 };
 983
 984 void fio_options_dup_and_init(struct option *long_options)
 985 {
 986         struct fio_option *o;
 987         unsigned int i;
 988
 989         options_init(options);
 990
 991         i = 0;
 992         while (long_options[i].name)
 993                 i++;
 994
 995         o = &options[0];
 996         while (o->name) {
 997                 long_options[i].name = o->name;
 998                 long_options[i].val = FIO_GETOPT_JOB;
 999                 if (o->type == FIO_OPT_STR_SET)
1000                         long_options[i].has_arg = no_argument;
1001                 else
1002                         long_options[i].has_arg = required_argument;
1003
1004                 i++;
1005                 o++;
1006                 assert(i < FIO_NR_OPTIONS);
1007         }
1008 }
1009
1010 int fio_option_parse(struct thread_data *td, const char *opt)
1011 {
1012         return parse_option(opt, options, td);
1013 }
1014
1015 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1016 {
1017         return parse_cmd_option(opt, val, options, td);
1018 }
1019
1020 void fio_fill_default_options(struct thread_data *td)
1021 {
1022         fill_default_options(td, options);
1023 }
1024
1025 int fio_show_option_help(const char *opt)
1026 {
1027         return show_cmd_help(options, opt);
1028 }
1029
1030 static void __options_mem(struct thread_data *td, int alloc)
1031 {
1032         struct thread_options *o = &td->o;
1033         struct fio_option *opt;
1034         char **ptr;
1035         int i;
1036
1037         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1038                 if (opt->type != FIO_OPT_STR_STORE)
1039                         continue;
1040
1041                 ptr = (void *) o + opt->off1;
1042                 if (*ptr) {
1043                         if (alloc)
1044                                 *ptr = strdup(*ptr);
1045                         else {
1046                                 free(*ptr);
1047                                 *ptr = NULL;
1048                         }
1049                 }
1050         }
1051 }
1052
1053 /*
1054  * dupe FIO_OPT_STR_STORE options
1055  */
1056 void options_mem_dupe(struct thread_data *td)
1057 {
1058         __options_mem(td, 1);
1059 }
1060
1061 void options_mem_free(struct thread_data fio_unused *td)
1062 {
1063 #if 0
1064         __options_mem(td, 0);
1065 #endif
1066 }