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   = "ioengine",
 316                 .type   = FIO_OPT_STR_STORE,
 317                 .off1   = td_var_offset(ioengine),
 318                 .help   = "IO engine to use",
 319                 .def    = "sync",
 320                 .posval = {
 321                           { .ival = "sync",
 322                             .help = "Use read/write",
 323                           },
 324 #ifdef FIO_HAVE_LIBAIO
 325                           { .ival = "libaio",
 326                             .help = "Linux native asynchronous IO",
 327                           },
 328 #endif
 329 #ifdef FIO_HAVE_POSIXAIO
 330                           { .ival = "posixaio",
 331                             .help = "POSIX asynchronous IO",
 332                           },
 333 #endif
 334                           { .ival = "mmap",
 335                             .help = "Memory mapped IO",
 336                           },
 337 #ifdef FIO_HAVE_SPLICE
 338                           { .ival = "splice",
 339                             .help = "splice/vmsplice based IO",
 340                           },
 341                           { .ival = "netsplice",
 342                             .help = "splice/vmsplice to/from the network",
 343                           },
 344 #endif
 345 #ifdef FIO_HAVE_SGIO
 346                           { .ival = "sg",
 347                             .help = "SCSI generic v3 IO",
 348                           },
 349 #endif
 350                           { .ival = "null",
 351                             .help = "Testing engine (no data transfer)",
 352                           },
 353                           { .ival = "net",
 354                             .help = "Network IO",
 355                           },
 356 #ifdef FIO_HAVE_SYSLET
 357                           { .ival = "syslet-rw",
 358                             .help = "syslet enabled async pread/pwrite IO",
 359                           },
 360 #endif
 361                           { .ival = "cpuio",
 362                             .help = "CPU cycler burner engine",
 363                           },
 364 #ifdef FIO_HAVE_GUASI
 365                           { .ival = "guasi",
 366                             .help = "GUASI IO engine",
 367                           },
 368 #endif
 369                           { .ival = "external",
 370                             .help = "Load external engine (append name)",
 371                           },
 372                 },
 373         },
 374         {
 375                 .name   = "iodepth",
 376                 .type   = FIO_OPT_INT,
 377                 .off1   = td_var_offset(iodepth),
 378                 .help   = "Amount of IO buffers to keep in flight",
 379                 .def    = "1",
 380         },
 381         {
 382                 .name   = "iodepth_batch",
 383                 .type   = FIO_OPT_INT,
 384                 .off1   = td_var_offset(iodepth_batch),
 385                 .help   = "Number of IO to submit in one go",
 386                 .parent = "iodepth",
 387         },
 388         {
 389                 .name   = "iodepth_low",
 390                 .type   = FIO_OPT_INT,
 391                 .off1   = td_var_offset(iodepth_low),
 392                 .help   = "Low water mark for queuing depth",
 393                 .parent = "iodepth",
 394         },
 395         {
 396                 .name   = "size",
 397                 .type   = FIO_OPT_STR_VAL,
 398                 .off1   = td_var_offset(size),
 399                 .minval = 1,
 400                 .help   = "Total size of device or files",
 401         },
 402         {
 403                 .name   = "filesize",
 404                 .type   = FIO_OPT_STR_VAL,
 405                 .off1   = td_var_offset(file_size_low),
 406                 .off2   = td_var_offset(file_size_high),
 407                 .minval = 1,
 408                 .help   = "Size of individual files",
 409         },
 410         {
 411                 .name   = "offset",
 412                 .alias  = "fileoffset",
 413                 .type   = FIO_OPT_STR_VAL,
 414                 .off1   = td_var_offset(start_offset),
 415                 .help   = "Start IO from this offset",
 416                 .def    = "0",
 417         },
 418         {
 419                 .name   = "bs",
 420                 .alias  = "blocksize",
 421                 .type   = FIO_OPT_STR_VAL_INT,
 422                 .off1   = td_var_offset(bs[DDIR_READ]),
 423                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 424                 .minval = 1,
 425                 .help   = "Block size unit",
 426                 .def    = "4k",
 427                 .parent = "rw",
 428         },
 429         {
 430                 .name   = "bsrange",
 431                 .alias  = "blocksize_range",
 432                 .type   = FIO_OPT_RANGE,
 433                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 434                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 435                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 436                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 437                 .minval = 1,
 438                 .help   = "Set block size range (in more detail than bs)",
 439                 .parent = "rw",
 440         },
 441         {
 442                 .name   = "bs_unaligned",
 443                 .alias  = "blocksize_unaligned",
 444                 .type   = FIO_OPT_STR_SET,
 445                 .off1   = td_var_offset(bs_unaligned),
 446                 .help   = "Don't sector align IO buffer sizes",
 447                 .parent = "rw",
 448         },
 449         {
 450                 .name   = "randrepeat",
 451                 .type   = FIO_OPT_BOOL,
 452                 .off1   = td_var_offset(rand_repeatable),
 453                 .help   = "Use repeatable random IO pattern",
 454                 .def    = "1",
 455                 .parent = "rw",
 456         },
 457         {
 458                 .name   = "norandommap",
 459                 .type   = FIO_OPT_STR_SET,
 460                 .off1   = td_var_offset(norandommap),
 461                 .help   = "Accept potential duplicate random blocks",
 462                 .parent = "rw",
 463         },
 464         {
 465                 .name   = "nrfiles",
 466                 .type   = FIO_OPT_INT,
 467                 .off1   = td_var_offset(nr_files),
 468                 .help   = "Split job workload between this number of files",
 469                 .def    = "1",
 470         },
 471         {
 472                 .name   = "openfiles",
 473                 .type   = FIO_OPT_INT,
 474                 .off1   = td_var_offset(open_files),
 475                 .help   = "Number of files to keep open at the same time",
 476         },
 477         {
 478                 .name   = "file_service_type",
 479                 .type   = FIO_OPT_STR,
 480                 .cb     = str_fst_cb,
 481                 .off1   = td_var_offset(file_service_type),
 482                 .help   = "How to select which file to service next",
 483                 .def    = "roundrobin",
 484                 .posval = {
 485                           { .ival = "random",
 486                             .oval = FIO_FSERVICE_RANDOM,
 487                             .help = "Choose a file at random",
 488                           },
 489                           { .ival = "roundrobin",
 490                             .oval = FIO_FSERVICE_RR,
 491                             .help = "Round robin select files",
 492                           },
 493                 },
 494                 .parent = "nrfiles",
 495         },
 496         {
 497                 .name   = "fadvise_hint",
 498                 .type   = FIO_OPT_BOOL,
 499                 .off1   = td_var_offset(fadvise_hint),
 500                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 501                 .def    = "1",
 502         },
 503         {
 504                 .name   = "fsync",
 505                 .type   = FIO_OPT_INT,
 506                 .off1   = td_var_offset(fsync_blocks),
 507                 .help   = "Issue fsync for writes every given number of blocks",
 508                 .def    = "0",
 509         },
 510         {
 511                 .name   = "direct",
 512                 .type   = FIO_OPT_BOOL,
 513                 .off1   = td_var_offset(odirect),
 514                 .help   = "Use O_DIRECT IO (negates buffered)",
 515                 .def    = "0",
 516         },
 517         {
 518                 .name   = "buffered",
 519                 .type   = FIO_OPT_BOOL,
 520                 .off1   = td_var_offset(odirect),
 521                 .neg    = 1,
 522                 .help   = "Use buffered IO (negates direct)",
 523                 .def    = "1",
 524         },
 525         {
 526                 .name   = "overwrite",
 527                 .type   = FIO_OPT_BOOL,
 528                 .off1   = td_var_offset(overwrite),
 529                 .help   = "When writing, set whether to overwrite current data",
 530                 .def    = "0",
 531         },
 532         {
 533                 .name   = "loops",
 534                 .type   = FIO_OPT_INT,
 535                 .off1   = td_var_offset(loops),
 536                 .help   = "Number of times to run the job",
 537                 .def    = "1",
 538         },
 539         {
 540                 .name   = "numjobs",
 541                 .type   = FIO_OPT_INT,
 542                 .off1   = td_var_offset(numjobs),
 543                 .help   = "Duplicate this job this many times",
 544                 .def    = "1",
 545         },
 546         {
 547                 .name   = "startdelay",
 548                 .type   = FIO_OPT_INT,
 549                 .off1   = td_var_offset(start_delay),
 550                 .help   = "Only start job when this period has passed",
 551                 .def    = "0",
 552         },
 553         {
 554                 .name   = "runtime",
 555                 .alias  = "timeout",
 556                 .type   = FIO_OPT_STR_VAL_TIME,
 557                 .off1   = td_var_offset(timeout),
 558                 .help   = "Stop workload when this amount of time has passed",
 559                 .def    = "0",
 560         },
 561         {
 562                 .name   = "time_based",
 563                 .type   = FIO_OPT_STR_SET,
 564                 .off1   = td_var_offset(time_based),
 565                 .help   = "Keep running until runtime/timeout is met",
 566         },
 567         {
 568                 .name   = "mem",
 569                 .alias  = "iomem",
 570                 .type   = FIO_OPT_STR,
 571                 .cb     = str_mem_cb,
 572                 .off1   = td_var_offset(mem_type),
 573                 .help   = "Backing type for IO buffers",
 574                 .def    = "malloc",
 575                 .posval = {
 576                           { .ival = "malloc",
 577                             .oval = MEM_MALLOC,
 578                             .help = "Use malloc(3) for IO buffers",
 579                           },
 580                           { .ival = "shm",
 581                             .oval = MEM_SHM,
 582                             .help = "Use shared memory segments for IO buffers",
 583                           },
 584 #ifdef FIO_HAVE_HUGETLB
 585                           { .ival = "shmhuge",
 586                             .oval = MEM_SHMHUGE,
 587                             .help = "Like shm, but use huge pages",
 588                           },
 589 #endif
 590                           { .ival = "mmap",
 591                             .oval = MEM_MMAP,
 592                             .help = "Use mmap(2) (file or anon) for IO buffers",
 593                           },
 594 #ifdef FIO_HAVE_HUGETLB
 595                           { .ival = "mmaphuge",
 596                             .oval = MEM_MMAPHUGE,
 597                             .help = "Like mmap, but use huge pages",
 598                           },
 599 #endif
 600                   },
 601         },
 602         {
 603                 .name   = "verify",
 604                 .type   = FIO_OPT_STR,
 605                 .off1   = td_var_offset(verify),
 606                 .help   = "Verify data written",
 607                 .def    = "0",
 608                 .posval = {
 609                           { .ival = "0",
 610                             .oval = VERIFY_NONE,
 611                             .help = "Don't do IO verification",
 612                           },
 613                           { .ival = "md5",
 614                             .oval = VERIFY_MD5,
 615                             .help = "Use md5 checksums for verification",
 616                           },
 617                           { .ival = "crc64",
 618                             .oval = VERIFY_CRC64,
 619                             .help = "Use crc64 checksums for verification",
 620                           },
 621                           { .ival = "crc32",
 622                             .oval = VERIFY_CRC32,
 623                             .help = "Use crc32 checksums for verification",
 624                           },
 625                           { .ival = "crc16",
 626                             .oval = VERIFY_CRC16,
 627                             .help = "Use crc16 checksums for verification",
 628                           },
 629                           { .ival = "crc7",
 630                             .oval = VERIFY_CRC7,
 631                             .help = "Use crc7 checksums for verification",
 632                           },
 633                           { .ival = "sha256",
 634                             .oval = VERIFY_SHA256,
 635                             .help = "Use sha256 checksums for verification",
 636                           },
 637                           { .ival = "sha512",
 638                             .oval = VERIFY_SHA512,
 639                             .help = "Use sha512 checksums for verification",
 640                           },
 641                           { .ival = "meta",
 642                             .oval = VERIFY_META,
 643                             .help = "Use io information",
 644                           },
 645                           {
 646                             .ival = "null",
 647                             .oval = VERIFY_NULL,
 648                             .help = "Pretend to verify",
 649                           },
 650                 },
 651         },
 652         {
 653                 .name   = "verifysort",
 654                 .type   = FIO_OPT_BOOL,
 655                 .off1   = td_var_offset(verifysort),
 656                 .help   = "Sort written verify blocks for read back",
 657                 .def    = "1",
 658                 .parent = "verify",
 659         },
 660         {
 661                 .name   = "verify_interval",
 662                 .type   = FIO_OPT_STR_VAL_INT,
 663                 .off1   = td_var_offset(verify_interval),
 664                 .minval = 2 * sizeof(struct verify_header),
 665                 .help   = "Store verify buffer header every N bytes",
 666                 .parent = "verify",
 667         },
 668         {
 669                 .name   = "verify_offset",
 670                 .type   = FIO_OPT_STR_VAL_INT,
 671                 .help   = "Offset verify header location by N bytes",
 672                 .def    = "0",
 673                 .cb     = str_verify_offset_cb,
 674                 .parent = "verify",
 675         },
 676         {
 677                 .name   = "verify_pattern",
 678                 .type   = FIO_OPT_INT,
 679                 .cb     = str_verify_pattern_cb,
 680                 .help   = "Fill pattern for IO buffers",
 681                 .parent = "verify",
 682         },
 683         {
 684                 .name   = "write_iolog",
 685                 .type   = FIO_OPT_STR_STORE,
 686                 .off1   = td_var_offset(write_iolog_file),
 687                 .help   = "Store IO pattern to file",
 688         },
 689         {
 690                 .name   = "read_iolog",
 691                 .type   = FIO_OPT_STR_STORE,
 692                 .off1   = td_var_offset(read_iolog_file),
 693                 .help   = "Playback IO pattern from file",
 694         },
 695         {
 696                 .name   = "exec_prerun",
 697                 .type   = FIO_OPT_STR_STORE,
 698                 .off1   = td_var_offset(exec_prerun),
 699                 .help   = "Execute this file prior to running job",
 700         },
 701         {
 702                 .name   = "exec_postrun",
 703                 .type   = FIO_OPT_STR_STORE,
 704                 .off1   = td_var_offset(exec_postrun),
 705                 .help   = "Execute this file after running job",
 706         },
 707 #ifdef FIO_HAVE_IOSCHED_SWITCH
 708         {
 709                 .name   = "ioscheduler",
 710                 .type   = FIO_OPT_STR_STORE,
 711                 .off1   = td_var_offset(ioscheduler),
 712                 .help   = "Use this IO scheduler on the backing device",
 713         },
 714 #endif
 715         {
 716                 .name   = "zonesize",
 717                 .type   = FIO_OPT_STR_VAL,
 718                 .off1   = td_var_offset(zone_size),
 719                 .help   = "Give size of an IO zone",
 720                 .def    = "0",
 721         },
 722         {
 723                 .name   = "zoneskip",
 724                 .type   = FIO_OPT_STR_VAL,
 725                 .off1   = td_var_offset(zone_skip),
 726                 .help   = "Space between IO zones",
 727                 .def    = "0",
 728         },
 729         {
 730                 .name   = "lockmem",
 731                 .type   = FIO_OPT_STR_VAL,
 732                 .cb     = str_lockmem_cb,
 733                 .help   = "Lock down this amount of memory",
 734                 .def    = "0",
 735         },
 736         {
 737                 .name   = "rwmixread",
 738                 .type   = FIO_OPT_INT,
 739                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 740                 .maxval = 100,
 741                 .help   = "Percentage of mixed workload that is reads",
 742                 .def    = "50",
 743         },
 744         {
 745                 .name   = "rwmixwrite",
 746                 .type   = FIO_OPT_INT,
 747                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 748                 .maxval = 100,
 749                 .help   = "Percentage of mixed workload that is writes",
 750                 .def    = "50",
 751         },
 752         {
 753                 .name   = "rwmixcycle",
 754                 .type   = FIO_OPT_INT,
 755                 .off1   = td_var_offset(rwmixcycle),
 756                 .help   = "Cycle period for mixed read/write workloads (msec)",
 757                 .def    = "500",
 758                 .parent = "rwmixread",
 759         },
 760         {
 761                 .name   = "nice",
 762                 .type   = FIO_OPT_INT,
 763                 .off1   = td_var_offset(nice),
 764                 .help   = "Set job CPU nice value",
 765                 .minval = -19,
 766                 .maxval = 20,
 767                 .def    = "0",
 768         },
 769 #ifdef FIO_HAVE_IOPRIO
 770         {
 771                 .name   = "prio",
 772                 .type   = FIO_OPT_INT,
 773                 .cb     = str_prio_cb,
 774                 .help   = "Set job IO priority value",
 775                 .minval = 0,
 776                 .maxval = 7,
 777         },
 778         {
 779                 .name   = "prioclass",
 780                 .type   = FIO_OPT_INT,
 781                 .cb     = str_prioclass_cb,
 782                 .help   = "Set job IO priority class",
 783                 .minval = 0,
 784                 .maxval = 3,
 785         },
 786 #endif
 787         {
 788                 .name   = "thinktime",
 789                 .type   = FIO_OPT_INT,
 790                 .off1   = td_var_offset(thinktime),
 791                 .help   = "Idle time between IO buffers (usec)",
 792                 .def    = "0",
 793         },
 794         {
 795                 .name   = "thinktime_spin",
 796                 .type   = FIO_OPT_INT,
 797                 .off1   = td_var_offset(thinktime_spin),
 798                 .help   = "Start think time by spinning this amount (usec)",
 799                 .def    = "0",
 800                 .parent = "thinktime",
 801         },
 802         {
 803                 .name   = "thinktime_blocks",
 804                 .type   = FIO_OPT_INT,
 805                 .off1   = td_var_offset(thinktime_blocks),
 806                 .help   = "IO buffer period between 'thinktime'",
 807                 .def    = "1",
 808                 .parent = "thinktime",
 809         },
 810         {
 811                 .name   = "rate",
 812                 .type   = FIO_OPT_INT,
 813                 .off1   = td_var_offset(rate),
 814                 .help   = "Set bandwidth rate",
 815         },
 816         {
 817                 .name   = "ratemin",
 818                 .type   = FIO_OPT_INT,
 819                 .off1   = td_var_offset(ratemin),
 820                 .help   = "Job must meet this rate or it will be shutdown",
 821                 .parent = "rate",
 822         },
 823         {
 824                 .name   = "rate_iops",
 825                 .type   = FIO_OPT_INT,
 826                 .off1   = td_var_offset(rate_iops),
 827                 .help   = "Limit IO used to this number of IO operations/sec",
 828         },
 829         {
 830                 .name   = "rate_iops_min",
 831                 .type   = FIO_OPT_INT,
 832                 .off1   = td_var_offset(rate_iops_min),
 833                 .help   = "Job must meet this rate or it will be shutdown",
 834                 .parent = "rate_iops",
 835         },
 836         {
 837                 .name   = "ratecycle",
 838                 .type   = FIO_OPT_INT,
 839                 .off1   = td_var_offset(ratecycle),
 840                 .help   = "Window average for rate limits (msec)",
 841                 .def    = "1000",
 842                 .parent = "rate",
 843         },
 844         {
 845                 .name   = "invalidate",
 846                 .type   = FIO_OPT_BOOL,
 847                 .off1   = td_var_offset(invalidate_cache),
 848                 .help   = "Invalidate buffer/page cache prior to running job",
 849                 .def    = "1",
 850         },
 851         {
 852                 .name   = "sync",
 853                 .type   = FIO_OPT_BOOL,
 854                 .off1   = td_var_offset(sync_io),
 855                 .help   = "Use O_SYNC for buffered writes",
 856                 .def    = "0",
 857                 .parent = "buffered",
 858         },
 859         {
 860                 .name   = "bwavgtime",
 861                 .type   = FIO_OPT_INT,
 862                 .off1   = td_var_offset(bw_avg_time),
 863                 .help   = "Time window over which to calculate bandwidth (msec)",
 864                 .def    = "500",
 865         },
 866         {
 867                 .name   = "create_serialize",
 868                 .type   = FIO_OPT_BOOL,
 869                 .off1   = td_var_offset(create_serialize),
 870                 .help   = "Serialize creating of job files",
 871                 .def    = "1",
 872         },
 873         {
 874                 .name   = "create_fsync",
 875                 .type   = FIO_OPT_BOOL,
 876                 .off1   = td_var_offset(create_fsync),
 877                 .help   = "Fsync file after creation",
 878                 .def    = "1",
 879         },
 880         {
 881                 .name   = "cpuload",
 882                 .type   = FIO_OPT_INT,
 883                 .off1   = td_var_offset(cpuload),
 884                 .help   = "Use this percentage of CPU",
 885         },
 886         {
 887                 .name   = "cpuchunks",
 888                 .type   = FIO_OPT_INT,
 889                 .off1   = td_var_offset(cpucycle),
 890                 .help   = "Length of the CPU burn cycles (usecs)",
 891                 .def    = "50000",
 892                 .parent = "cpuload",
 893         },
 894 #ifdef FIO_HAVE_CPU_AFFINITY
 895         {
 896                 .name   = "cpumask",
 897                 .type   = FIO_OPT_INT,
 898                 .cb     = str_cpumask_cb,
 899                 .help   = "CPU affinity mask",
 900         },
 901         {
 902                 .name   = "cpus_allowed",
 903                 .type   = FIO_OPT_STR,
 904                 .cb     = str_cpus_allowed_cb,
 905                 .help   = "Set CPUs allowed",
 906         },
 907 #endif
 908         {
 909                 .name   = "end_fsync",
 910                 .type   = FIO_OPT_BOOL,
 911                 .off1   = td_var_offset(end_fsync),
 912                 .help   = "Include fsync at the end of job",
 913                 .def    = "0",
 914         },
 915         {
 916                 .name   = "fsync_on_close",
 917                 .type   = FIO_OPT_BOOL,
 918                 .off1   = td_var_offset(fsync_on_close),
 919                 .help   = "fsync files on close",
 920                 .def    = "0",
 921         },
 922         {
 923                 .name   = "unlink",
 924                 .type   = FIO_OPT_BOOL,
 925                 .off1   = td_var_offset(unlink),
 926                 .help   = "Unlink created files after job has completed",
 927                 .def    = "0",
 928         },
 929         {
 930                 .name   = "exitall",
 931                 .type   = FIO_OPT_STR_SET,
 932                 .cb     = str_exitall_cb,
 933                 .help   = "Terminate all jobs when one exits",
 934         },
 935         {
 936                 .name   = "stonewall",
 937                 .type   = FIO_OPT_STR_SET,
 938                 .off1   = td_var_offset(stonewall),
 939                 .help   = "Insert a hard barrier between this job and previous",
 940         },
 941         {
 942                 .name   = "new_group",
 943                 .type   = FIO_OPT_STR_SET,
 944                 .off1   = td_var_offset(new_group),
 945                 .help   = "Mark the start of a new group (for reporting)",
 946         },
 947         {
 948                 .name   = "thread",
 949                 .type   = FIO_OPT_STR_SET,
 950                 .off1   = td_var_offset(use_thread),
 951                 .help   = "Use threads instead of forks",
 952         },
 953         {
 954                 .name   = "write_bw_log",
 955                 .type   = FIO_OPT_STR_SET,
 956                 .off1   = td_var_offset(write_bw_log),
 957                 .help   = "Write log of bandwidth during run",
 958         },
 959         {
 960                 .name   = "write_lat_log",
 961                 .type   = FIO_OPT_STR_SET,
 962                 .off1   = td_var_offset(write_lat_log),
 963                 .help   = "Write log of latency during run",
 964         },
 965         {
 966                 .name   = "hugepage-size",
 967                 .type   = FIO_OPT_STR_VAL,
 968                 .off1   = td_var_offset(hugepage_size),
 969                 .help   = "When using hugepages, specify size of each page",
 970                 .def    = __stringify(FIO_HUGE_PAGE),
 971         },
 972         {
 973                 .name   = "group_reporting",
 974                 .type   = FIO_OPT_STR_SET,
 975                 .off1   = td_var_offset(group_reporting),
 976                 .help   = "Do reporting on a per-group basis",
 977         },
 978         {
 979                 .name   = "zero_buffers",
 980                 .type   = FIO_OPT_STR_SET,
 981                 .off1   = td_var_offset(zero_buffers),
 982                 .help   = "Init IO buffers to all zeroes",
 983         },
 984 #ifdef FIO_HAVE_DISK_UTIL
 985         {
 986                 .name   = "disk_util",
 987                 .type   = FIO_OPT_BOOL,
 988                 .off1   = td_var_offset(do_disk_util),
 989                 .help   = "Log disk utilization stats",
 990                 .def    = "1",
 991         },
 992 #endif
 993         {
 994                 .name = NULL,
 995         },
 996 };
 997
 998 void fio_options_dup_and_init(struct option *long_options)
 999 {
1000         struct fio_option *o;
1001         unsigned int i;
1002
1003         options_init(options);
1004
1005         i = 0;
1006         while (long_options[i].name)
1007                 i++;
1008
1009         o = &options[0];
1010         while (o->name) {
1011                 long_options[i].name = o->name;
1012                 long_options[i].val = FIO_GETOPT_JOB;
1013                 if (o->type == FIO_OPT_STR_SET)
1014                         long_options[i].has_arg = no_argument;
1015                 else
1016                         long_options[i].has_arg = required_argument;
1017
1018                 i++;
1019                 o++;
1020                 assert(i < FIO_NR_OPTIONS);
1021         }
1022 }
1023
1024 int fio_option_parse(struct thread_data *td, const char *opt)
1025 {
1026         return parse_option(opt, options, td);
1027 }
1028
1029 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
1030 {
1031         return parse_cmd_option(opt, val, options, td);
1032 }
1033
1034 void fio_fill_default_options(struct thread_data *td)
1035 {
1036         fill_default_options(td, options);
1037 }
1038
1039 int fio_show_option_help(const char *opt)
1040 {
1041         return show_cmd_help(options, opt);
1042 }
1043
1044 static void __options_mem(struct thread_data *td, int alloc)
1045 {
1046         struct thread_options *o = &td->o;
1047         struct fio_option *opt;
1048         char **ptr;
1049         int i;
1050
1051         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
1052                 if (opt->type != FIO_OPT_STR_STORE)
1053                         continue;
1054
1055                 ptr = (void *) o + opt->off1;
1056                 if (*ptr) {
1057                         if (alloc)
1058                                 *ptr = strdup(*ptr);
1059                         else {
1060                                 free(*ptr);
1061                                 *ptr = NULL;
1062                         }
1063                 }
1064         }
1065 }
1066
1067 /*
1068  * dupe FIO_OPT_STR_STORE options
1069  */
1070 void options_mem_dupe(struct thread_data *td)
1071 {
1072         __options_mem(td, 1);
1073 }
1074
1075 void options_mem_free(struct thread_data fio_unused *td)
1076 {
1077 #if 0
1078         __options_mem(td, 0);
1079 #endif
1080 }