#include <stdio.h>
-#include <stdio.h>
#include <unistd.h>
#include <inttypes.h>
+#include <math.h>
#include <assert.h>
#include "../io_ddir.h"
#include "../blktrace_api.h"
#include "../os/os.h"
#include "../log.h"
-#include "../lib/linux-dev-lookup.h"
+#include "../minmax.h"
+#include "../oslib/linux-dev-lookup.h"
#define TRACE_FIFO_SIZE 8192
static unsigned int rt_threshold = 1000000;
static unsigned int ios_threshold = 10;
+static unsigned int rate_threshold;
+static unsigned int set_rate;
+static unsigned int max_depth = 256;
static int output_ascii = 1;
static char *filename;
+static char **add_opts;
+static int n_add_opts;
+
+/*
+ * Collapse defaults
+ */
+static unsigned int collapse_entries = 0;
+static unsigned int depth_diff = 1;
+static unsigned int random_diff = 5;
+
struct bs {
unsigned int bs;
unsigned int nr;
struct btrace_out {
unsigned long ios[DDIR_RWDIR_CNT];
- unsigned long rw_bs[DDIR_RWDIR_CNT];
unsigned long merges[DDIR_RWDIR_CNT];
uint64_t last_end[DDIR_RWDIR_CNT];
int inflight;
unsigned int depth;
- uint64_t first_ttime;
- uint64_t last_ttime;
+ int depth_disabled;
+ int complete_seen;
- struct trace_file *files;
- int nr_files;
- unsigned int last_major, last_minor;
+ uint64_t first_ttime[DDIR_RWDIR_CNT];
+ uint64_t last_ttime[DDIR_RWDIR_CNT];
+ uint64_t kib[DDIR_RWDIR_CNT];
uint64_t start_delay;
};
struct flist_head hash_list;
struct flist_head pid_list;
pid_t pid;
+
+ pid_t *merge_pids;
+ unsigned int nr_merge_pids;
+
+ struct trace_file *files;
+ int nr_files;
+ unsigned int last_major, last_minor;
+ int numjobs;
+ int ignore;
+
struct btrace_out o;
};
i = calloc(1, sizeof(*i));
i->p = p;
o->inflight++;
- o->depth = max((int) o->depth, o->inflight);
+ if (!o->depth_disabled) {
+ o->depth = max((int) o->depth, o->inflight);
+ if (o->depth >= max_depth && !o->complete_seen) {
+ o->depth_disabled = 1;
+ o->depth = max_depth;
+ }
+ }
i->end_sector = sector + (len >> 9);
__inflight_add(i);
}
return trace_fifo_get(fifo, fd, NULL, t->pdu_len);
}
-static void handle_trace_notify(struct blk_io_trace *t)
+static int handle_trace_notify(struct blk_io_trace *t)
{
switch (t->action) {
case BLK_TN_PROCESS:
break;
default:
log_err("unknown trace act %x\n", t->action);
- break;
+ return 1;
}
+
+ return 0;
}
static void __add_bs(struct btrace_out *o, unsigned int len, int rw)
#define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS))
#define FMINOR(dev) ((unsigned int) ((dev) & FMINORMASK))
-static void btrace_add_file(struct btrace_out *o, uint32_t devno)
+static int btrace_add_file(struct btrace_pid *p, uint32_t devno)
{
unsigned int maj = FMAJOR(devno);
unsigned int min = FMINOR(devno);
char dev[256];
if (filename)
- return;
- if (o->last_major == maj && o->last_minor == min)
- return;
+ return 0;
+ if (p->last_major == maj && p->last_minor == min)
+ return 0;
- o->last_major = maj;
- o->last_minor = min;
+ p->last_major = maj;
+ p->last_minor = min;
/*
* check for this file in our list
*/
- for (i = 0; i < o->nr_files; i++) {
- f = &o->files[i];
+ for (i = 0; i < p->nr_files; i++) {
+ f = &p->files[i];
if (f->major == maj && f->minor == min)
- return;
+ return 0;
}
strcpy(dev, "/dev");
if (!blktrace_lookup_device(NULL, dev, maj, min)) {
log_err("fio: failed to find device %u/%u\n", maj, min);
- return;
+ if (!output_ascii) {
+ log_err("fio: use -d to specify device\n");
+ return 1;
+ }
+ return 0;
}
- o->files = realloc(o->files, (o->nr_files + 1) * sizeof(*f));
- f = &o->files[o->nr_files];
+ p->files = realloc(p->files, (p->nr_files + 1) * sizeof(*f));
+ f = &p->files[p->nr_files];
f->name = strdup(dev);
f->major = maj;
f->minor = min;
- o->nr_files++;
+ p->nr_files++;
+ return 0;
}
-static void handle_trace_discard(struct blk_io_trace *t, struct btrace_out *o)
+static int t_to_rwdir(struct blk_io_trace *t)
{
- btrace_add_file(o, t->device);
+ if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
+ return DDIR_TRIM;
- if (o->first_ttime == -1ULL)
- o->first_ttime = t->time;
+ return (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
+}
+
+static int handle_trace_discard(struct blk_io_trace *t, struct btrace_pid *p)
+{
+ struct btrace_out *o = &p->o;
+
+ if (btrace_add_file(p, t->device))
+ return 1;
+
+ if (o->first_ttime[2] == -1ULL)
+ o->first_ttime[2] = t->time;
o->ios[DDIR_TRIM]++;
add_bs(o, t->bytes, DDIR_TRIM);
+ return 0;
}
-static void handle_trace_fs(struct blk_io_trace *t, struct btrace_out *o)
+static int handle_trace_fs(struct blk_io_trace *t, struct btrace_pid *p)
{
+ struct btrace_out *o = &p->o;
int rw;
- btrace_add_file(o, t->device);
+ if (btrace_add_file(p, t->device))
+ return 1;
first_ttime = min(first_ttime, (uint64_t) t->time);
- if (o->first_ttime == -1ULL)
- o->first_ttime = t->time;
-
rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
+ if (o->first_ttime[rw] == -1ULL)
+ o->first_ttime[rw] = t->time;
+
add_bs(o, t->bytes, rw);
o->ios[rw]++;
o->seq[rw]++;
o->last_end[rw] = t->sector + (t->bytes >> 9);
+ return 0;
}
-static void handle_queue_trace(struct blk_io_trace *t, struct btrace_out *o)
+static int handle_queue_trace(struct blk_io_trace *t, struct btrace_pid *p)
{
if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY))
- handle_trace_notify(t);
+ return handle_trace_notify(t);
else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
- handle_trace_discard(t, o);
+ return handle_trace_discard(t, p);
else
- handle_trace_fs(t, o);
+ return handle_trace_fs(t, p);
}
-static void handle_trace(struct blk_io_trace *t, struct btrace_pid *p)
+static int handle_trace(struct blk_io_trace *t, struct btrace_pid *p)
{
unsigned int act = t->action & 0xffff;
+ int ret = 0;
if (act == __BLK_TA_QUEUE) {
inflight_add(p, t->sector, t->bytes);
- handle_queue_trace(t, &p->o);
- } else if (act == __BLK_TA_REQUEUE) {
- p->o.inflight--;
+ ret = handle_queue_trace(t, p);
} else if (act == __BLK_TA_BACKMERGE) {
struct inflight *i;
inflight_remove(i);
i = inflight_find(t->sector);
- if (i) {
- int rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
-
- inflight_merge(i, rw, t->bytes);
- }
+ if (i)
+ inflight_merge(i, t_to_rwdir(t), t->bytes);
} else if (act == __BLK_TA_FRONTMERGE) {
struct inflight *i;
inflight_remove(i);
i = inflight_find(t->sector);
- if (i) {
- int rw = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
-
- inflight_merge(i, rw, 0);
- }
+ if (i)
+ inflight_merge(i, t_to_rwdir(t), 0);
} else if (act == __BLK_TA_COMPLETE) {
struct inflight *i;
i = inflight_find(t->sector + (t->bytes >> 9));
- if (i)
+ if (i) {
+ i->p->o.kib[t_to_rwdir(t)] += (t->bytes >> 10);
+ i->p->o.complete_seen = 1;
inflight_remove(i);
+ }
}
+
+ return ret;
}
static void byteswap_trace(struct blk_io_trace *t)
int i;
p = calloc(1, sizeof(*p));
- p->o.first_ttime = -1ULL;
- p->o.last_ttime = -1ULL;
- for (i = 0; i < DDIR_RWDIR_CNT; i++)
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ p->o.first_ttime[i] = -1ULL;
+ p->o.last_ttime[i] = -1ULL;
p->o.last_end[i] = -1ULL;
+ }
p->pid = pid;
+ p->numjobs = 1;
flist_add_tail(&p->hash_list, hash_list);
flist_add_tail(&p->pid_list, &pid_list);
}
* Load a blktrace file by reading all the blk_io_trace entries, and storing
* them as io_pieces like the fio text version would do.
*/
-static int load_blktrace(const char *filename, int need_swap)
+static int load_blktrace(const char *fname, int need_swap)
{
struct btrace_pid *p;
unsigned long traces;
struct blk_io_trace t;
struct fifo *fifo;
- int fd;
+ int fd, ret = 0;
- fd = open(filename, O_RDONLY);
+ fd = open(fname, O_RDONLY);
if (fd < 0) {
perror("open trace file\n");
return 1;
traces = 0;
do {
- int ret = trace_fifo_get(fifo, fd, &t, sizeof(t));
-
+ ret = trace_fifo_get(fifo, fd, &t, sizeof(t));
if (ret < 0)
goto err;
else if (!ret)
}
p = pid_hash_get(t.pid);
- handle_trace(&t, p);
- p->o.last_ttime = t.time;
+ ret = handle_trace(&t, p);
+ if (ret)
+ break;
+ p->o.last_ttime[t_to_rwdir(&t)] = t.time;
traces++;
} while (1);
fifo_free(fifo);
close(fd);
+ if (ret)
+ return ret;
+
if (output_ascii)
printf("Traces loaded: %lu\n", traces);
return bsb->nr - bsa->nr;
}
+static unsigned long o_to_kib_rate(struct btrace_out *o, int rw)
+{
+ uint64_t usec = (o->last_ttime[rw] - o->first_ttime[rw]) / 1000ULL;
+ uint64_t val;
+
+ if (!usec)
+ return 0;
+
+ usec /= 1000;
+ if (!usec)
+ return 0;
+
+ val = o->kib[rw] * 1000ULL;
+ return val / usec;
+}
+
+static uint64_t o_first_ttime(struct btrace_out *o)
+{
+ uint64_t first;
+
+ first = min(o->first_ttime[0], o->first_ttime[1]);
+ return min(first, o->first_ttime[2]);
+}
+
+static uint64_t o_longest_ttime(struct btrace_out *o)
+{
+ uint64_t ret = 0;
+ int i;
+
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ uint64_t diff;
+
+ diff = o->last_ttime[i] - o->first_ttime[i];
+ ret = max(diff, ret);
+ }
+
+ return ret;
+}
+
static void __output_p_ascii(struct btrace_pid *p, unsigned long *ios)
{
const char *msg[] = { "reads", "writes", "trims" };
struct btrace_out *o = &p->o;
- unsigned long total;
+ unsigned long total, usec;
int i, j;
- printf("[pid:\t%u]\n", p->pid);
+ printf("[pid:\t%u", p->pid);
+ if (p->nr_merge_pids)
+ for (i = 0; i < p->nr_merge_pids; i++)
+ printf(", %u", p->merge_pids[i]);
+ printf("]\n");
total = ddir_rw_sum(o->ios);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
perc = ((float) o->merges[i] * 100.0) / (float) total;
printf("\tmerges: %lu (perc=%3.2f%%)\n", o->merges[i], perc);
perc = ((float) o->seq[i] * 100.0) / (float) o->ios[i];
- printf("\tseq: %lu (perc=%3.2f%%)\n", o->seq[i], perc);
+ printf("\tseq: %lu (perc=%3.2f%%)\n", (unsigned long) o->seq[i], perc);
+ printf("\trate: %lu KiB/sec\n", o_to_kib_rate(o, i));
for (j = 0; j < o->nr_bs[i]; j++) {
struct bs *bs = &o->bs[i][j];
}
printf("depth:\t%u\n", o->depth);
- printf("usec:\t%llu (delay=%llu)\n", (o->last_ttime - o->first_ttime) / 1000ULL, (unsigned long long) o->start_delay);
+ usec = o_longest_ttime(o) / 1000ULL;
+ printf("usec:\t%lu (delay=%llu)\n", usec, (unsigned long long) o->start_delay);
printf("files:\t");
- for (i = 0; i < o->nr_files; i++)
- printf("%s,", o->files[i].name);
+ for (i = 0; i < p->nr_files; i++)
+ printf("%s,", p->files[i].name);
printf("\n");
printf("\n");
log_err("fio: trace has both read/write and trim\n");
return 1;
}
+ if (!p->nr_files) {
+ log_err("fio: no devices found\n");
+ return 1;
+ }
+
+ printf("[pid%u", p->pid);
+ if (p->nr_merge_pids)
+ for (i = 0; i < p->nr_merge_pids; i++)
+ printf(",pid%u", p->merge_pids[i]);
+ printf("]\n");
- printf("[pid%u]\n", p->pid);
+ printf("numjobs=%u\n", p->numjobs);
printf("direct=1\n");
if (o->depth == 1)
printf("ioengine=sync\n");
printf("rw=randrw\n");
total = ddir_rw_sum(o->ios);
perc = ((float) o->ios[0] * 100.0) / (float) total;
- printf("rwmixread=%u\n", (int) (perc + 0.99));
+ printf("rwmixread=%u\n", (int) floor(perc + 0.50));
}
printf("percentage_random=");
if (i)
printf(",");
perc = 100.0 - perc;
- printf("%u", (int) perc);
+ printf("%u", (int) floor(perc + 0.5));
}
printf("\n");
printf("filename=");
- for (i = 0; i < o->nr_files; i++) {
+ for (i = 0; i < p->nr_files; i++) {
if (i)
printf(":");
- printf("%s", o->files[i].name);
+ printf("%s", p->files[i].name);
}
printf("\n");
- printf("startdelay=%llus\n", o->start_delay / 1000000ULL);
+ if (o->start_delay / 1000000ULL)
+ printf("startdelay=%llus\n", o->start_delay / 1000000ULL);
- time = o->last_ttime - o->first_ttime;
+ time = o_longest_ttime(o);
time = (time + 1000000000ULL - 1) / 1000000000ULL;
printf("runtime=%llus\n", time);
if (j + 1 == o->nr_bs[i])
printf("%u/", bs->bs);
else
- printf("%u/%u", bs->bs, (int) perc);
+ printf("%u/%u", bs->bs, (int) floor(perc + 0.5));
}
}
- printf("\n\n");
+ printf("\n");
+ if (set_rate) {
+ printf("rate=");
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ unsigned long rate;
+
+ rate = o_to_kib_rate(o, i);
+ if (i)
+ printf(",");
+ if (rate)
+ printf("%luk", rate);
+ }
+ printf("\n");
+ }
+
+ if (n_add_opts)
+ for (i = 0; i < n_add_opts; i++)
+ printf("%s\n", add_opts[i]);
+
+ printf("\n");
return 0;
}
}
if (filename) {
- o->files = malloc(sizeof(struct trace_file));
- o->nr_files++;
- o->files[0].name = filename;
+ p->files = malloc(sizeof(struct trace_file));
+ p->nr_files++;
+ p->files[0].name = filename;
}
if (output_ascii)
return ret;
}
+static void remove_ddir(struct btrace_out *o, int rw)
+{
+ o->ios[rw] = 0;
+}
+
static int prune_entry(struct btrace_out *o)
{
+ unsigned long rate;
uint64_t time;
+ int i;
if (ddir_rw_sum(o->ios) < ios_threshold)
return 1;
- time = (o->last_ttime - o->first_ttime) / 1000ULL;
+ time = o_longest_ttime(o) / 1000ULL;
if (time < rt_threshold)
return 1;
+ rate = 0;
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ unsigned long this_rate;
+
+ this_rate = o_to_kib_rate(o, i);
+ if (this_rate < rate_threshold) {
+ remove_ddir(o, i);
+ this_rate = 0;
+ }
+ rate += this_rate;
+ }
+
+ if (rate < rate_threshold)
+ return 1;
+
return 0;
}
struct btrace_out *o = &p->o;
int i;
- for (i = 0; i < o->nr_files; i++) {
- if (o->files[i].name && o->files[i].name != filename)
- free(o->files[i].name);
+ for (i = 0; i < p->nr_files; i++) {
+ if (p->files[i].name && p->files[i].name != filename)
+ free(p->files[i].name);
}
for (i = 0; i < DDIR_RWDIR_CNT; i++)
free(o->bs[i]);
- free(o->files);
+ free(p->files);
flist_del(&p->pid_list);
flist_del(&p->hash_list);
free(p);
}
+static int entries_close(struct btrace_pid *pida, struct btrace_pid *pidb)
+{
+ float perca, percb, fdiff;
+ int i, idiff;
+
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ if ((pida->o.ios[i] && !pidb->o.ios[i]) ||
+ (pidb->o.ios[i] && !pida->o.ios[i]))
+ return 0;
+ if (pida->o.ios[i] && pidb->o.ios[i]) {
+ perca = ((float) pida->o.seq[i] * 100.0) / (float) pida->o.ios[i];
+ percb = ((float) pidb->o.seq[i] * 100.0) / (float) pidb->o.ios[i];
+ fdiff = perca - percb;
+ if (fabs(fdiff) > random_diff)
+ return 0;
+ }
+
+ idiff = pida->o.depth - pidb->o.depth;
+ if (abs(idiff) > depth_diff)
+ return 0;
+ }
+
+ return 1;
+}
+
+static void merge_bs(struct bs **bsap, unsigned int *nr_bsap,
+ struct bs *bsb, unsigned int nr_bsb)
+{
+ struct bs *bsa = *bsap;
+ unsigned int nr_bsa = *nr_bsap;
+ int a, b;
+
+ for (b = 0; b < nr_bsb; b++) {
+ int next, found = 0;
+
+ for (a = 0; a < nr_bsa; a++) {
+ if (bsb[b].bs != bsa[a].bs)
+ continue;
+
+ bsa[a].nr += bsb[b].nr;
+ bsa[a].merges += bsb[b].merges;
+ found = 1;
+ break;
+ }
+
+ if (found)
+ continue;
+
+ next = *nr_bsap;
+ bsa = realloc(bsa, (next + 1) * sizeof(struct bs));
+ bsa[next].bs = bsb[b].bs;
+ bsa[next].nr = bsb[b].nr;
+ (*nr_bsap)++;
+ *bsap = bsa;
+ }
+}
+
+static int merge_entries(struct btrace_pid *pida, struct btrace_pid *pidb)
+{
+ int i;
+
+ if (!entries_close(pida, pidb))
+ return 0;
+
+ pida->nr_merge_pids++;
+ pida->merge_pids = realloc(pida->merge_pids, pida->nr_merge_pids * sizeof(pid_t));
+ pida->merge_pids[pida->nr_merge_pids - 1] = pidb->pid;
+
+ for (i = 0; i < DDIR_RWDIR_CNT; i++) {
+ struct btrace_out *oa = &pida->o;
+ struct btrace_out *ob = &pidb->o;
+
+ oa->ios[i] += ob->ios[i];
+ oa->merges[i] += ob->merges[i];
+ oa->seq[i] += ob->seq[i];
+ oa->kib[i] += ob->kib[i];
+ oa->first_ttime[i] = min(oa->first_ttime[i], ob->first_ttime[i]);
+ oa->last_ttime[i] = max(oa->last_ttime[i], ob->last_ttime[i]);
+ merge_bs(&oa->bs[i], &oa->nr_bs[i], ob->bs[i], ob->nr_bs[i]);
+ }
+
+ pida->o.start_delay = min(pida->o.start_delay, pidb->o.start_delay);
+ pida->o.depth = (pida->o.depth + pidb->o.depth) / 2;
+ return 1;
+}
+
+static void check_merges(struct btrace_pid *p, struct flist_head *pidlist)
+{
+ struct flist_head *e, *tmp;
+
+ if (p->ignore)
+ return;
+
+ flist_for_each_safe(e, tmp, pidlist) {
+ struct btrace_pid *pidb;
+
+ pidb = flist_entry(e, struct btrace_pid, pid_list);
+ if (pidb == p)
+ continue;
+
+ if (merge_entries(p, pidb)) {
+ pidb->ignore = 1;
+ p->numjobs++;
+ }
+ }
+}
+
static int output_p(void)
{
unsigned long ios[DDIR_RWDIR_CNT];
struct flist_head *e, *tmp;
+ int depth_disabled = 0;
int ret = 0;
flist_for_each_safe(e, tmp, &pid_list) {
free_p(p);
continue;
}
- p->o.start_delay = (p->o.first_ttime / 1000ULL) - first_ttime;
+ p->o.start_delay = (o_first_ttime(&p->o) / 1000ULL) - first_ttime;
+ depth_disabled += p->o.depth_disabled;
+ }
+
+ if (collapse_entries) {
+ struct btrace_pid *p;
+
+ flist_for_each_safe(e, tmp, &pid_list) {
+ p = flist_entry(e, struct btrace_pid, pid_list);
+ check_merges(p, &pid_list);
+ }
+
+ flist_for_each_safe(e, tmp, &pid_list) {
+ p = flist_entry(e, struct btrace_pid, pid_list);
+ if (p->ignore)
+ free_p(p);
+ }
}
+ if (depth_disabled)
+ log_err("fio: missing completion traces, depths capped at %u\n", max_depth);
+
memset(ios, 0, sizeof(ios));
flist_sort(NULL, &pid_list, entry_cmp);
p = flist_entry(e, struct btrace_pid, pid_list);
ret |= __output_p(p, ios);
+ if (ret && !output_ascii)
+ break;
}
if (output_ascii)
static int usage(char *argv[])
{
- log_err("%s: <blktrace bin file>\n", argv[0]);
+ log_err("%s: [options] <blktrace bin file>\n", argv[0]);
log_err("\t-t\tUsec threshold to ignore task\n");
log_err("\t-n\tNumber IOS threshold to ignore task\n");
log_err("\t-f\tFio job file output\n");
log_err("\t-d\tUse this file/device for replay\n");
+ log_err("\t-r\tIgnore jobs with less than this KiB/sec rate\n");
+ log_err("\t-R\tSet rate in fio job (def=%u)\n", set_rate);
+ log_err("\t-D\tCap queue depth at this value (def=%u)\n", max_depth);
+ log_err("\t-c\tCollapse \"identical\" jobs (def=%u)\n", collapse_entries);
+ log_err("\t-u\tDepth difference for collapse (def=%u)\n", depth_diff);
+ log_err("\t-x\tRandom difference for collapse (def=%u)\n", random_diff);
+ log_err("\t-a\tAdditional fio option to add to job file\n");
return 1;
}
ret = read(fd, &t, sizeof(t));
if (ret < 0) {
+ close(fd);
perror("read");
return 1;
} else if (ret != sizeof(t)) {
+ close(fd);
log_err("fio: short read on trace file\n");
return 1;
}
if (argc < 2)
return usage(argv);
- while ((c = getopt(argc, argv, "t:n:fd:")) != -1) {
+ while ((c = getopt(argc, argv, "t:n:fd:r:RD:c:u:x:a:")) != -1) {
switch (c) {
+ case 'R':
+ set_rate = 1;
+ break;
+ case 'r':
+ rate_threshold = atoi(optarg);
+ break;
case 't':
rt_threshold = atoi(optarg);
break;
case 'd':
filename = strdup(optarg);
break;
+ case 'D':
+ max_depth = atoi(optarg);
+ break;
+ case 'c':
+ collapse_entries = atoi(optarg);
+ break;
+ case 'u':
+ depth_diff = atoi(optarg);
+ break;
+ case 'x':
+ random_diff = atoi(optarg);
+ break;
+ case 'a':
+ add_opts = realloc(add_opts, (n_add_opts + 1) * sizeof(char *));
+ add_opts[n_add_opts] = strdup(optarg);
+ n_add_opts++;
+ break;
case '?':
default:
return usage(argv);
projects / fio.git / blobdiff