netsplice: fix a few typos
[fio.git] / options.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <getopt.h>
7 #include <assert.h>
8
9 #include "fio.h"
10 #include "parse.h"
11
12 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
13
14 /*
15  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
16  */
17 static char *get_opt_postfix(const char *str)
18 {
19         char *p = strstr(str, ":");
20
21         if (!p)
22                 return NULL;
23
24         p++;
25         strip_blank_front(&p);
26         strip_blank_end(p);
27         return strdup(p);
28 }
29
30 static int str_rw_cb(void *data, const char *str)
31 {
32         struct thread_data *td = data;
33         char *nr = get_opt_postfix(str);
34
35         td->o.ddir_nr = 1;
36         if (nr)
37                 td->o.ddir_nr = atoi(nr);
38
39         return 0;
40 }
41
42 static int str_mem_cb(void *data, const char *mem)
43 {
44         struct thread_data *td = data;
45
46         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
47                 td->mmapfile = get_opt_postfix(mem);
48                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
49                         log_err("fio: mmaphuge:/path/to/file\n");
50                         return 1;
51                 }
52         }
53
54         return 0;
55 }
56
57 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
58 {
59         mlock_size = *val;
60         return 0;
61 }
62
63 #ifdef FIO_HAVE_IOPRIO
64 static int str_prioclass_cb(void *data, unsigned int *val)
65 {
66         struct thread_data *td = data;
67         unsigned short mask;
68
69         /*
70          * mask off old class bits, str_prio_cb() may have set a default class
71          */
72         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
73         td->ioprio &= mask;
74
75         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
76         return 0;
77 }
78
79 static int str_prio_cb(void *data, unsigned int *val)
80 {
81         struct thread_data *td = data;
82
83         td->ioprio |= *val;
84
85         /*
86          * If no class is set, assume BE
87          */
88         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
89                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
90
91         return 0;
92 }
93 #endif
94
95 static int str_exitall_cb(void)
96 {
97         exitall_on_terminate = 1;
98         return 0;
99 }
100
101 #ifdef FIO_HAVE_CPU_AFFINITY
102 static int str_cpumask_cb(void *data, unsigned int *val)
103 {
104         struct thread_data *td = data;
105         unsigned int i;
106
107         CPU_ZERO(&td->o.cpumask);
108
109         for (i = 0; i < sizeof(int) * 8; i++)
110                 if ((1 << i) & *val)
111                         CPU_SET(*val, &td->o.cpumask);
112
113         td->o.cpumask_set = 1;
114         return 0;
115 }
116
117 static int str_cpus_allowed_cb(void *data, const char *input)
118 {
119         struct thread_data *td = data;
120         char *cpu, *str, *p;
121
122         CPU_ZERO(&td->o.cpumask);
123
124         p = str = strdup(input);
125
126         strip_blank_front(&str);
127         strip_blank_end(str);
128
129         while ((cpu = strsep(&str, ",")) != NULL) {
130                 if (!strlen(cpu))
131                         break;
132                 CPU_SET(atoi(cpu), &td->o.cpumask);
133         }
134
135         free(p);
136         td->o.cpumask_set = 1;
137         exit(0);
138         return 0;
139 }
140 #endif
141
142 static int str_fst_cb(void *data, const char *str)
143 {
144         struct thread_data *td = data;
145         char *nr = get_opt_postfix(str);
146
147         td->file_service_nr = 1;
148         if (nr)
149                 td->file_service_nr = atoi(nr);
150
151         return 0;
152 }
153
154 static int str_filename_cb(void *data, const char *input)
155 {
156         struct thread_data *td = data;
157         char *fname, *str, *p;
158
159         p = str = strdup(input);
160
161         strip_blank_front(&str);
162         strip_blank_end(str);
163
164         if (!td->files_index)
165                 td->o.nr_files = 0;
166
167         while ((fname = strsep(&str, ":")) != NULL) {
168                 if (!strlen(fname))
169                         break;
170                 add_file(td, fname);
171                 td->o.nr_files++;
172         }
173
174         free(p);
175         return 0;
176 }
177
178 static int str_directory_cb(void *data, const char fio_unused *str)
179 {
180         struct thread_data *td = data;
181         struct stat sb;
182
183         if (lstat(td->o.directory, &sb) < 0) {
184                 log_err("fio: %s is not a directory\n", td->o.directory);
185                 td_verror(td, errno, "lstat");
186                 return 1;
187         }
188         if (!S_ISDIR(sb.st_mode)) {
189                 log_err("fio: %s is not a directory\n", td->o.directory);
190                 return 1;
191         }
192
193         return 0;
194 }
195
196 static int str_opendir_cb(void *data, const char fio_unused *str)
197 {
198         struct thread_data *td = data;
199
200         if (!td->files_index)
201                 td->o.nr_files = 0;
202
203         return add_dir_files(td, td->o.opendir);
204 }
205
206
207 #define __stringify_1(x)        #x
208 #define __stringify(x)          __stringify_1(x)
209
210 /*
211  * Map of job/command line options
212  */
213 static struct fio_option options[] = {
214         {
215                 .name   = "description",
216                 .type   = FIO_OPT_STR_STORE,
217                 .off1   = td_var_offset(description),
218                 .help   = "Text job description",
219         },
220         {
221                 .name   = "name",
222                 .type   = FIO_OPT_STR_STORE,
223                 .off1   = td_var_offset(name),
224                 .help   = "Name of this job",
225         },
226         {
227                 .name   = "directory",
228                 .type   = FIO_OPT_STR_STORE,
229                 .off1   = td_var_offset(directory),
230                 .cb     = str_directory_cb,
231                 .help   = "Directory to store files in",
232         },
233         {
234                 .name   = "filename",
235                 .type   = FIO_OPT_STR_STORE,
236                 .off1   = td_var_offset(filename),
237                 .cb     = str_filename_cb,
238                 .help   = "File(s) to use for the workload",
239         },
240         {
241                 .name   = "opendir",
242                 .type   = FIO_OPT_STR_STORE,
243                 .off1   = td_var_offset(opendir),
244                 .cb     = str_opendir_cb,
245                 .help   = "Recursively add files from this directory and down",
246         },
247         {
248                 .name   = "rw",
249                 .alias  = "readwrite",
250                 .type   = FIO_OPT_STR,
251                 .cb     = str_rw_cb,
252                 .off1   = td_var_offset(td_ddir),
253                 .help   = "IO direction",
254                 .def    = "read",
255                 .posval = {
256                           { .ival = "read",
257                             .oval = TD_DDIR_READ,
258                             .help = "Sequential read",
259                           },
260                           { .ival = "write",
261                             .oval = TD_DDIR_WRITE,
262                             .help = "Sequential write",
263                           },
264                           { .ival = "randread",
265                             .oval = TD_DDIR_RANDREAD,
266                             .help = "Random read",
267                           },
268                           { .ival = "randwrite",
269                             .oval = TD_DDIR_RANDWRITE,
270                             .help = "Random write",
271                           },
272                           { .ival = "rw",
273                             .oval = TD_DDIR_RW,
274                             .help = "Sequential read and write mix",
275                           },
276                           { .ival = "randrw",
277                             .oval = TD_DDIR_RANDRW,
278                             .help = "Random read and write mix"
279                           },
280                 },
281         },
282         {
283                 .name   = "fadvise_hint",
284                 .type   = FIO_OPT_BOOL,
285                 .off1   = td_var_offset(fadvise_hint),
286                 .help   = "Use fadvise() to advise the kernel on IO pattern",
287                 .def    = "1",
288         },
289         {
290                 .name   = "ioengine",
291                 .type   = FIO_OPT_STR_STORE,
292                 .off1   = td_var_offset(ioengine),
293                 .help   = "IO engine to use",
294                 .def    = "sync",
295                 .posval = {
296                           { .ival = "sync",
297                             .help = "Use read/write",
298                           },
299 #ifdef FIO_HAVE_LIBAIO
300                           { .ival = "libaio",
301                             .help = "Linux native asynchronous IO",
302                           },
303 #endif
304 #ifdef FIO_HAVE_POSIXAIO
305                           { .ival = "posixaio",
306                             .help = "POSIX asynchronous IO",
307                           },
308 #endif
309                           { .ival = "mmap",
310                             .help = "Memory mapped IO",
311                           },
312 #ifdef FIO_HAVE_SPLICE
313                           { .ival = "splice",
314                             .help = "splice/vmsplice based IO",
315                           },
316                           { .ival = "netsplice",
317                             .help = "splice/vmsplice to/from the network",
318                           },
319 #endif
320 #ifdef FIO_HAVE_SGIO
321                           { .ival = "sg",
322                             .help = "SCSI generic v3 IO",
323                           },
324 #endif
325                           { .ival = "null",
326                             .help = "Testing engine (no data transfer)",
327                           },
328                           { .ival = "net",
329                             .help = "Network IO",
330                           },
331 #ifdef FIO_HAVE_SYSLET
332                           { .ival = "syslet-rw",
333                             .help = "syslet enabled async pread/pwrite IO",
334                           },
335 #endif
336                           { .ival = "cpuio",
337                             .help = "CPU cycler burner engine",
338                           },
339 #ifdef FIO_HAVE_GUASI
340                           { .ival = "guasi",
341                             .help = "GUASI IO engine",
342                           },
343 #endif
344                           { .ival = "external",
345                             .help = "Load external engine (append name)",
346                           },
347                 },
348         },
349         {
350                 .name   = "iodepth",
351                 .type   = FIO_OPT_INT,
352                 .off1   = td_var_offset(iodepth),
353                 .help   = "Amount of IO buffers to keep in flight",
354                 .def    = "1",
355         },
356         {
357                 .name   = "iodepth_batch",
358                 .type   = FIO_OPT_INT,
359                 .off1   = td_var_offset(iodepth_batch),
360                 .help   = "Number of IO to submit in one go",
361         },
362         {
363                 .name   = "iodepth_low",
364                 .type   = FIO_OPT_INT,
365                 .off1   = td_var_offset(iodepth_low),
366                 .help   = "Low water mark for queuing depth",
367         },
368         {
369                 .name   = "size",
370                 .type   = FIO_OPT_STR_VAL,
371                 .off1   = td_var_offset(size),
372                 .help   = "Total size of device or files",
373         },
374         {
375                 .name   = "filesize",
376                 .type   = FIO_OPT_STR_VAL,
377                 .off1   = td_var_offset(file_size_low),
378                 .off2   = td_var_offset(file_size_high),
379                 .help   = "Size of individual files",
380         },
381         {
382                 .name   = "bs",
383                 .alias  = "blocksize",
384                 .type   = FIO_OPT_STR_VAL_INT,
385                 .off1   = td_var_offset(bs[DDIR_READ]),
386                 .off2   = td_var_offset(bs[DDIR_WRITE]),
387                 .help   = "Block size unit",
388                 .def    = "4k",
389         },
390         {
391                 .name   = "bsrange",
392                 .alias  = "blocksize_range",
393                 .type   = FIO_OPT_RANGE,
394                 .off1   = td_var_offset(min_bs[DDIR_READ]),
395                 .off2   = td_var_offset(max_bs[DDIR_READ]),
396                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
397                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
398                 .help   = "Set block size range (in more detail than bs)",
399         },
400         {
401                 .name   = "bs_unaligned",
402                 .alias  = "blocksize_unaligned",
403                 .type   = FIO_OPT_STR_SET,
404                 .off1   = td_var_offset(bs_unaligned),
405                 .help   = "Don't sector align IO buffer sizes",
406         },
407         {
408                 .name   = "offset",
409                 .type   = FIO_OPT_STR_VAL,
410                 .off1   = td_var_offset(start_offset),
411                 .help   = "Start IO from this offset",
412                 .def    = "0",
413         },
414         {
415                 .name   = "randrepeat",
416                 .type   = FIO_OPT_BOOL,
417                 .off1   = td_var_offset(rand_repeatable),
418                 .help   = "Use repeatable random IO pattern",
419                 .def    = "1",
420         },
421         {
422                 .name   = "norandommap",
423                 .type   = FIO_OPT_STR_SET,
424                 .off1   = td_var_offset(norandommap),
425                 .help   = "Accept potential duplicate random blocks",
426         },
427         {
428                 .name   = "nrfiles",
429                 .type   = FIO_OPT_INT,
430                 .off1   = td_var_offset(nr_files),
431                 .help   = "Split job workload between this number of files",
432                 .def    = "1",
433         },
434         {
435                 .name   = "openfiles",
436                 .type   = FIO_OPT_INT,
437                 .off1   = td_var_offset(open_files),
438                 .help   = "Number of files to keep open at the same time",
439         },
440         {
441                 .name   = "file_service_type",
442                 .type   = FIO_OPT_STR,
443                 .cb     = str_fst_cb,
444                 .off1   = td_var_offset(file_service_type),
445                 .help   = "How to select which file to service next",
446                 .def    = "roundrobin",
447                 .posval = {
448                           { .ival = "random",
449                             .oval = FIO_FSERVICE_RANDOM,
450                             .help = "Choose a file at random",
451                           },
452                           { .ival = "roundrobin",
453                             .oval = FIO_FSERVICE_RR,
454                             .help = "Round robin select files",
455                           },
456                 },
457         },
458         {
459                 .name   = "fsync",
460                 .type   = FIO_OPT_INT,
461                 .off1   = td_var_offset(fsync_blocks),
462                 .help   = "Issue fsync for writes every given number of blocks",
463                 .def    = "0",
464         },
465         {
466                 .name   = "direct",
467                 .type   = FIO_OPT_BOOL,
468                 .off1   = td_var_offset(odirect),
469                 .help   = "Use O_DIRECT IO (negates buffered)",
470                 .def    = "0",
471         },
472         {
473                 .name   = "buffered",
474                 .type   = FIO_OPT_BOOL,
475                 .off1   = td_var_offset(odirect),
476                 .neg    = 1,
477                 .help   = "Use buffered IO (negates direct)",
478                 .def    = "1",
479         },
480         {
481                 .name   = "overwrite",
482                 .type   = FIO_OPT_BOOL,
483                 .off1   = td_var_offset(overwrite),
484                 .help   = "When writing, set whether to overwrite current data",
485                 .def    = "0",
486         },
487         {
488                 .name   = "loops",
489                 .type   = FIO_OPT_INT,
490                 .off1   = td_var_offset(loops),
491                 .help   = "Number of times to run the job",
492                 .def    = "1",
493         },
494         {
495                 .name   = "numjobs",
496                 .type   = FIO_OPT_INT,
497                 .off1   = td_var_offset(numjobs),
498                 .help   = "Duplicate this job this many times",
499                 .def    = "1",
500         },
501         {
502                 .name   = "startdelay",
503                 .type   = FIO_OPT_INT,
504                 .off1   = td_var_offset(start_delay),
505                 .help   = "Only start job when this period has passed",
506                 .def    = "0",
507         },
508         {
509                 .name   = "runtime",
510                 .alias  = "timeout",
511                 .type   = FIO_OPT_STR_VAL_TIME,
512                 .off1   = td_var_offset(timeout),
513                 .help   = "Stop workload when this amount of time has passed",
514                 .def    = "0",
515         },
516         {
517                 .name   = "time_based",
518                 .type   = FIO_OPT_STR_SET,
519                 .off1   = td_var_offset(time_based),
520                 .help   = "Keep running until runtime/timeout is met",
521         },
522         {
523                 .name   = "mem",
524                 .alias  = "iomem",
525                 .type   = FIO_OPT_STR,
526                 .cb     = str_mem_cb,
527                 .off1   = td_var_offset(mem_type),
528                 .help   = "Backing type for IO buffers",
529                 .def    = "malloc",
530                 .posval = {
531                           { .ival = "malloc",
532                             .oval = MEM_MALLOC,
533                             .help = "Use malloc(3) for IO buffers",
534                           },
535                           { .ival = "shm",
536                             .oval = MEM_SHM,
537                             .help = "Use shared memory segments for IO buffers",
538                           },
539 #ifdef FIO_HAVE_HUGETLB
540                           { .ival = "shmhuge",
541                             .oval = MEM_SHMHUGE,
542                             .help = "Like shm, but use huge pages",
543                           },
544 #endif
545                           { .ival = "mmap",
546                             .oval = MEM_MMAP,
547                             .help = "Use mmap(2) (file or anon) for IO buffers",
548                           },
549 #ifdef FIO_HAVE_HUGETLB
550                           { .ival = "mmaphuge",
551                             .oval = MEM_MMAPHUGE,
552                             .help = "Like mmap, but use huge pages",
553                           },
554 #endif
555                   },
556         },
557         {
558                 .name   = "verify",
559                 .type   = FIO_OPT_STR,
560                 .off1   = td_var_offset(verify),
561                 .help   = "Verify data written",
562                 .def    = "0",
563                 .posval = {
564                           { .ival = "0",
565                             .oval = VERIFY_NONE,
566                             .help = "Don't do IO verification",
567                           },
568                           { .ival = "crc32",
569                             .oval = VERIFY_CRC32,
570                             .help = "Use crc32 checksums for verification",
571                           },
572                           { .ival = "md5",
573                             .oval = VERIFY_MD5,
574                             .help = "Use md5 checksums for verification",
575                           },
576                           {
577                             .ival = "null",
578                             .oval = VERIFY_NULL,
579                             .help = "Pretend to verify",
580                           },
581                 },
582         },
583         {
584                 .name   = "verifysort",
585                 .type   = FIO_OPT_BOOL,
586                 .off1   = td_var_offset(verifysort),
587                 .help   = "Sort written verify blocks for read back",
588                 .def    = "1",
589         },
590         {
591                 .name   = "write_iolog",
592                 .type   = FIO_OPT_STR_STORE,
593                 .off1   = td_var_offset(write_iolog_file),
594                 .help   = "Store IO pattern to file",
595         },
596         {
597                 .name   = "read_iolog",
598                 .type   = FIO_OPT_STR_STORE,
599                 .off1   = td_var_offset(read_iolog_file),
600                 .help   = "Playback IO pattern from file",
601         },
602         {
603                 .name   = "exec_prerun",
604                 .type   = FIO_OPT_STR_STORE,
605                 .off1   = td_var_offset(exec_prerun),
606                 .help   = "Execute this file prior to running job",
607         },
608         {
609                 .name   = "exec_postrun",
610                 .type   = FIO_OPT_STR_STORE,
611                 .off1   = td_var_offset(exec_postrun),
612                 .help   = "Execute this file after running job",
613         },
614 #ifdef FIO_HAVE_IOSCHED_SWITCH
615         {
616                 .name   = "ioscheduler",
617                 .type   = FIO_OPT_STR_STORE,
618                 .off1   = td_var_offset(ioscheduler),
619                 .help   = "Use this IO scheduler on the backing device",
620         },
621 #endif
622         {
623                 .name   = "zonesize",
624                 .type   = FIO_OPT_STR_VAL,
625                 .off1   = td_var_offset(zone_size),
626                 .help   = "Give size of an IO zone",
627                 .def    = "0",
628         },
629         {
630                 .name   = "zoneskip",
631                 .type   = FIO_OPT_STR_VAL,
632                 .off1   = td_var_offset(zone_skip),
633                 .help   = "Space between IO zones",
634                 .def    = "0",
635         },
636         {
637                 .name   = "lockmem",
638                 .type   = FIO_OPT_STR_VAL,
639                 .cb     = str_lockmem_cb,
640                 .help   = "Lock down this amount of memory",
641                 .def    = "0",
642         },
643         {
644                 .name   = "rwmixcycle",
645                 .type   = FIO_OPT_INT,
646                 .off1   = td_var_offset(rwmixcycle),
647                 .help   = "Cycle period for mixed read/write workloads (msec)",
648                 .def    = "500",
649         },
650         {
651                 .name   = "rwmixread",
652                 .type   = FIO_OPT_INT,
653                 .off1   = td_var_offset(rwmix[DDIR_READ]),
654                 .maxval = 100,
655                 .help   = "Percentage of mixed workload that is reads",
656                 .def    = "50",
657         },
658         {
659                 .name   = "rwmixwrite",
660                 .type   = FIO_OPT_INT,
661                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
662                 .maxval = 100,
663                 .help   = "Percentage of mixed workload that is writes",
664                 .def    = "50",
665         },
666         {
667                 .name   = "nice",
668                 .type   = FIO_OPT_INT,
669                 .off1   = td_var_offset(nice),
670                 .help   = "Set job CPU nice value",
671                 .minval = -19,
672                 .maxval = 20,
673                 .def    = "0",
674         },
675 #ifdef FIO_HAVE_IOPRIO
676         {
677                 .name   = "prio",
678                 .type   = FIO_OPT_INT,
679                 .cb     = str_prio_cb,
680                 .help   = "Set job IO priority value",
681                 .minval = 0,
682                 .maxval = 7,
683         },
684         {
685                 .name   = "prioclass",
686                 .type   = FIO_OPT_INT,
687                 .cb     = str_prioclass_cb,
688                 .help   = "Set job IO priority class",
689                 .minval = 0,
690                 .maxval = 3,
691         },
692 #endif
693         {
694                 .name   = "thinktime",
695                 .type   = FIO_OPT_INT,
696                 .off1   = td_var_offset(thinktime),
697                 .help   = "Idle time between IO buffers (usec)",
698                 .def    = "0",
699         },
700         {
701                 .name   = "thinktime_spin",
702                 .type   = FIO_OPT_INT,
703                 .off1   = td_var_offset(thinktime_spin),
704                 .help   = "Start think time by spinning this amount (usec)",
705                 .def    = "0",
706         },
707         {
708                 .name   = "thinktime_blocks",
709                 .type   = FIO_OPT_INT,
710                 .off1   = td_var_offset(thinktime_blocks),
711                 .help   = "IO buffer period between 'thinktime'",
712                 .def    = "1",
713         },
714         {
715                 .name   = "rate",
716                 .type   = FIO_OPT_INT,
717                 .off1   = td_var_offset(rate),
718                 .help   = "Set bandwidth rate",
719         },
720         {
721                 .name   = "ratemin",
722                 .type   = FIO_OPT_INT,
723                 .off1   = td_var_offset(ratemin),
724                 .help   = "Job must meet this rate or it will be shutdown",
725         },
726         {
727                 .name   = "rate_iops",
728                 .type   = FIO_OPT_INT,
729                 .off1   = td_var_offset(rate_iops),
730                 .help   = "Limit IO used to this number of IO operations/sec",
731         },
732         {
733                 .name   = "rate_iops_min",
734                 .type   = FIO_OPT_INT,
735                 .off1   = td_var_offset(rate_iops_min),
736                 .help   = "Job must meet this rate or it will be shutdown",
737         },
738         {
739                 .name   = "ratecycle",
740                 .type   = FIO_OPT_INT,
741                 .off1   = td_var_offset(ratecycle),
742                 .help   = "Window average for rate limits (msec)",
743                 .def    = "1000",
744         },
745         {
746                 .name   = "invalidate",
747                 .type   = FIO_OPT_BOOL,
748                 .off1   = td_var_offset(invalidate_cache),
749                 .help   = "Invalidate buffer/page cache prior to running job",
750                 .def    = "1",
751         },
752         {
753                 .name   = "sync",
754                 .type   = FIO_OPT_BOOL,
755                 .off1   = td_var_offset(sync_io),
756                 .help   = "Use O_SYNC for buffered writes",
757                 .def    = "0",
758         },
759         {
760                 .name   = "bwavgtime",
761                 .type   = FIO_OPT_INT,
762                 .off1   = td_var_offset(bw_avg_time),
763                 .help   = "Time window over which to calculate bandwidth (msec)",
764                 .def    = "500",
765         },
766         {
767                 .name   = "create_serialize",
768                 .type   = FIO_OPT_BOOL,
769                 .off1   = td_var_offset(create_serialize),
770                 .help   = "Serialize creating of job files",
771                 .def    = "1",
772         },
773         {
774                 .name   = "create_fsync",
775                 .type   = FIO_OPT_BOOL,
776                 .off1   = td_var_offset(create_fsync),
777                 .help   = "Fsync file after creation",
778                 .def    = "1",
779         },
780         {
781                 .name   = "cpuload",
782                 .type   = FIO_OPT_INT,
783                 .off1   = td_var_offset(cpuload),
784                 .help   = "Use this percentage of CPU",
785         },
786         {
787                 .name   = "cpuchunks",
788                 .type   = FIO_OPT_INT,
789                 .off1   = td_var_offset(cpucycle),
790                 .help   = "Length of the CPU burn cycles (usecs)",
791                 .def    = "50000",
792         },
793 #ifdef FIO_HAVE_CPU_AFFINITY
794         {
795                 .name   = "cpumask",
796                 .type   = FIO_OPT_INT,
797                 .cb     = str_cpumask_cb,
798                 .help   = "CPU affinity mask",
799         },
800         {
801                 .name   = "cpus_allowed",
802                 .type   = FIO_OPT_STR,
803                 .cb     = str_cpus_allowed_cb,
804                 .help   = "Set CPUs allowed",
805         },
806 #endif
807         {
808                 .name   = "end_fsync",
809                 .type   = FIO_OPT_BOOL,
810                 .off1   = td_var_offset(end_fsync),
811                 .help   = "Include fsync at the end of job",
812                 .def    = "0",
813         },
814         {
815                 .name   = "fsync_on_close",
816                 .type   = FIO_OPT_BOOL,
817                 .off1   = td_var_offset(fsync_on_close),
818                 .help   = "fsync files on close",
819                 .def    = "0",
820         },
821         {
822                 .name   = "unlink",
823                 .type   = FIO_OPT_BOOL,
824                 .off1   = td_var_offset(unlink),
825                 .help   = "Unlink created files after job has completed",
826                 .def    = "0",
827         },
828         {
829                 .name   = "exitall",
830                 .type   = FIO_OPT_STR_SET,
831                 .cb     = str_exitall_cb,
832                 .help   = "Terminate all jobs when one exits",
833         },
834         {
835                 .name   = "stonewall",
836                 .type   = FIO_OPT_STR_SET,
837                 .off1   = td_var_offset(stonewall),
838                 .help   = "Insert a hard barrier between this job and previous",
839         },
840         {
841                 .name   = "new_group",
842                 .type   = FIO_OPT_STR_SET,
843                 .off1   = td_var_offset(new_group),
844                 .help   = "Mark the start of a new group (for reporting)",
845         },
846         {
847                 .name   = "thread",
848                 .type   = FIO_OPT_STR_SET,
849                 .off1   = td_var_offset(use_thread),
850                 .help   = "Use threads instead of forks",
851         },
852         {
853                 .name   = "write_bw_log",
854                 .type   = FIO_OPT_STR_SET,
855                 .off1   = td_var_offset(write_bw_log),
856                 .help   = "Write log of bandwidth during run",
857         },
858         {
859                 .name   = "write_lat_log",
860                 .type   = FIO_OPT_STR_SET,
861                 .off1   = td_var_offset(write_lat_log),
862                 .help   = "Write log of latency during run",
863         },
864         {
865                 .name   = "hugepage-size",
866                 .type   = FIO_OPT_STR_VAL,
867                 .off1   = td_var_offset(hugepage_size),
868                 .help   = "When using hugepages, specify size of each page",
869                 .def    = __stringify(FIO_HUGE_PAGE),
870         },
871         {
872                 .name   = "group_reporting",
873                 .type   = FIO_OPT_STR_SET,
874                 .off1   = td_var_offset(group_reporting),
875                 .help   = "Do reporting on a per-group basis",
876         },
877         {
878                 .name   = "zero_buffers",
879                 .type   = FIO_OPT_STR_SET,
880                 .off1   = td_var_offset(zero_buffers),
881                 .help   = "Init IO buffers to all zeroes",
882         },
883 #ifdef FIO_HAVE_DISK_UTIL
884         {
885                 .name   = "disk_util",
886                 .type   = FIO_OPT_BOOL,
887                 .off1   = td_var_offset(do_disk_util),
888                 .help   = "Log disk utilization stats",
889                 .def    = "1",
890         },
891 #endif
892         {
893                 .name = NULL,
894         },
895 };
896
897 void fio_options_dup_and_init(struct option *long_options)
898 {
899         struct fio_option *o;
900         unsigned int i;
901
902         options_init(options);
903
904         i = 0;
905         while (long_options[i].name)
906                 i++;
907
908         o = &options[0];
909         while (o->name) {
910                 long_options[i].name = o->name;
911                 long_options[i].val = FIO_GETOPT_JOB;
912                 if (o->type == FIO_OPT_STR_SET)
913                         long_options[i].has_arg = no_argument;
914                 else
915                         long_options[i].has_arg = required_argument;
916
917                 i++;
918                 o++;
919                 assert(i < FIO_NR_OPTIONS);
920         }
921 }
922
923 int fio_option_parse(struct thread_data *td, const char *opt)
924 {
925         return parse_option(opt, options, td);
926 }
927
928 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
929 {
930         return parse_cmd_option(opt, val, options, td);
931 }
932
933 void fio_fill_default_options(struct thread_data *td)
934 {
935         fill_default_options(td, options);
936 }
937
938 int fio_show_option_help(const char *opt)
939 {
940         return show_cmd_help(options, opt);
941 }
942
943 static void __options_mem(struct thread_data *td, int alloc)
944 {
945         struct thread_options *o = &td->o;
946         struct fio_option *opt;
947         char **ptr;
948         int i;
949
950         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
951                 if (opt->type != FIO_OPT_STR_STORE)
952                         continue;
953
954                 ptr = (void *) o + opt->off1;
955                 if (*ptr) {
956                         if (alloc)
957                                 *ptr = strdup(*ptr);
958                         else {
959                                 free(*ptr);
960                                 *ptr = NULL;
961                         }
962                 }
963         }
964 }
965
966 /*
967  * dupe FIO_OPT_STR_STORE options
968  */
969 void options_mem_dupe(struct thread_data *td)
970 {
971         __options_mem(td, 1);
972 }
973
974 void options_mem_free(struct thread_data fio_unused *td)
975 {
976 #if 0
977         __options_mem(td, 0);
978 #endif
979 }