#include "flist.h"
#include "fio.h"
#include "blktrace_api.h"
+#include "lib/linux-dev-lookup.h"
#define TRACE_FIFO_SIZE 8192
return 0;
}
-static int lookup_device(struct thread_data *td, char *path, unsigned int maj,
- unsigned int min)
-{
- struct dirent *dir;
- struct stat st;
- int found = 0;
- DIR *D;
-
- D = opendir(path);
- if (!D)
- return 0;
-
- while ((dir = readdir(D)) != NULL) {
- char full_path[256];
-
- if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, ".."))
- continue;
-
- sprintf(full_path, "%s%s%s", path, FIO_OS_PATH_SEPARATOR, dir->d_name);
- if (lstat(full_path, &st) == -1) {
- perror("lstat");
- break;
- }
-
- if (S_ISDIR(st.st_mode)) {
- found = lookup_device(td, full_path, maj, min);
- if (found) {
- strcpy(path, full_path);
- break;
- }
- }
-
- if (!S_ISBLK(st.st_mode))
- continue;
-
- /*
- * If replay_redirect is set then always return this device
- * upon lookup which overrides the device lookup based on
- * major minor in the actual blktrace
- */
- if (td->o.replay_redirect) {
- dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden"
- " with: %s", maj, min,
- td->o.replay_redirect);
- strcpy(path, td->o.replay_redirect);
- found = 1;
- break;
- }
-
- if (maj == major(st.st_rdev) && min == minor(st.st_rdev)) {
- dprint(FD_BLKTRACE, "device lookup: %d/%d\n", maj, min);
- strcpy(path, full_path);
- found = 1;
- break;
- }
- }
-
- closedir(D);
- return found;
-}
-
#define FMINORBITS 20
#define FMINORMASK ((1U << FMINORBITS) - 1)
#define FMAJOR(dev) ((unsigned int) ((dev) >> FMINORBITS))
}
strcpy(dev, "/dev");
- if (lookup_device(td, dev, maj, min)) {
+ if (blktrace_lookup_device(td->o.replay_redirect, dev, maj, min)) {
int fileno;
+ if (td->o.replay_redirect)
+ dprint(FD_BLKTRACE, "device lookup: %d/%d\n overridden"
+ " with: %s\n", maj, min,
+ td->o.replay_redirect);
+ else
+ dprint(FD_BLKTRACE, "device lookup: %d/%d\n", maj, min);
+
dprint(FD_BLKTRACE, "add devices %s\n", dev);
fileno = add_file_exclusive(td, dev);
+ td->o.open_files++;
td->files[fileno]->major = maj;
td->files[fileno]->minor = min;
trace_add_open_close_event(td, fileno, FIO_LOG_OPEN_FILE);
{
switch (t->action) {
case BLK_TN_PROCESS:
- log_info("blktrace: got process notify: %x, %d\n",
+ dprint(FD_BLKTRACE, "got process notify: %x, %d\n",
t->action, t->pid);
break;
case BLK_TN_TIMESTAMP:
- log_info("blktrace: got timestamp notify: %x, %d\n",
+ dprint(FD_BLKTRACE, "got timestamp notify: %x, %d\n",
t->action, t->pid);
break;
case BLK_TN_MESSAGE:
}
}
-static void handle_trace_discard(struct thread_data *td, struct blk_io_trace *t,
- unsigned long long ttime, unsigned long *ios)
+static void handle_trace_discard(struct thread_data *td,
+ struct blk_io_trace *t,
+ unsigned long long ttime,
+ unsigned long *ios, unsigned int *bs)
{
struct io_piece *ipo = malloc(sizeof(*ipo));
int fileno;
init_ipo(ipo);
fileno = trace_add_file(td, t->device);
- ios[DDIR_WRITE]++;
+ ios[DDIR_TRIM]++;
+ if (t->bytes > bs[DDIR_TRIM])
+ bs[DDIR_TRIM] = t->bytes;
+
td->o.size += t->bytes;
memset(ipo, 0, sizeof(*ipo));
* due to internal workings of the block layer.
*/
static void handle_trace(struct thread_data *td, struct blk_io_trace *t,
- unsigned long long ttime, unsigned long *ios,
- unsigned int *bs)
+ unsigned long *ios, unsigned int *bs)
{
+ static unsigned long long last_ttime;
+ unsigned long long delay;
+
if ((t->action & 0xffff) != __BLK_TA_QUEUE)
return;
- if (t->action & BLK_TC_ACT(BLK_TC_PC))
- return;
+
+ if (!(t->action & BLK_TC_ACT(BLK_TC_NOTIFY))) {
+ if (!last_ttime || td->o.no_stall) {
+ last_ttime = t->time;
+ delay = 0;
+ } else {
+ delay = t->time - last_ttime;
+ last_ttime = t->time;
+ }
+ }
if (t->action & BLK_TC_ACT(BLK_TC_NOTIFY))
handle_trace_notify(t);
else if (t->action & BLK_TC_ACT(BLK_TC_DISCARD))
- handle_trace_discard(td, t, ttime, ios);
+ handle_trace_discard(td, t, delay, ios, bs);
else
- handle_trace_fs(td, t, ttime, ios, bs);
+ handle_trace_fs(td, t, delay, ios, bs);
}
static void byteswap_trace(struct blk_io_trace *t)
t->pdu_len = fio_swap16(t->pdu_len);
}
+static int t_is_write(struct blk_io_trace *t)
+{
+ return (t->action & BLK_TC_ACT(BLK_TC_WRITE | BLK_TC_DISCARD)) != 0;
+}
+
/*
* 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.
*/
int load_blktrace(struct thread_data *td, const char *filename, int need_swap)
{
- unsigned long long ttime, delay;
struct blk_io_trace t;
- unsigned long ios[2], skipped_writes;
- unsigned int cpu;
- unsigned int rw_bs[2];
+ unsigned long ios[DDIR_RWDIR_CNT], skipped_writes;
+ unsigned int rw_bs[DDIR_RWDIR_CNT];
struct fifo *fifo;
int fd, i, old_state;
struct fio_file *f;
td->o.size = 0;
- cpu = 0;
- ttime = 0;
ios[0] = ios[1] = 0;
rw_bs[0] = rw_bs[1] = 0;
skipped_writes = 0;
depth = max(depth, this_depth);
this_depth = 0;
}
- if (!ttime) {
- ttime = t.time;
- cpu = t.cpu;
- }
- delay = 0;
- if (cpu == t.cpu)
- delay = t.time - ttime;
- if ((t.action & BLK_TC_ACT(BLK_TC_WRITE)) && read_only)
+ if (t_is_write(&t) && read_only) {
skipped_writes++;
- else {
- /*
- * set delay to zero if no_stall enabled for
- * fast replay
- */
- if (td->o.no_stall)
- delay = 0;
-
- handle_trace(td, &t, delay, ios, rw_bs);
+ continue;
}
-
- ttime = t.time;
- cpu = t.cpu;
- } else {
- delay = 0;
- handle_trace(td, &t, delay, ios, rw_bs);
}
+
+ handle_trace(td, &t, ios, rw_bs);
} while (1);
for (i = 0; i < td->files_index; i++) {
if (!ios[DDIR_READ] && !ios[DDIR_WRITE]) {
log_err("fio: found no ios in blktrace data\n");
return 1;
- } else if (ios[DDIR_READ] && !ios[DDIR_READ]) {
+ } else if (ios[DDIR_READ] && !ios[DDIR_WRITE]) {
td->o.td_ddir = TD_DDIR_READ;
td->o.max_bs[DDIR_READ] = rw_bs[DDIR_READ];
} else if (!ios[DDIR_READ] && ios[DDIR_WRITE]) {
td->o.td_ddir = TD_DDIR_RW;
td->o.max_bs[DDIR_READ] = rw_bs[DDIR_READ];
td->o.max_bs[DDIR_WRITE] = rw_bs[DDIR_WRITE];
+ td->o.max_bs[DDIR_TRIM] = rw_bs[DDIR_TRIM];
}
/*