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client.c
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client.c
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <signal.h>
#ifdef CONFIG_ZLIB
#include <zlib.h>
#endif
#include "fio.h"
#include "client.h"
#include "server.h"
#include "flist.h"
#include "hash.h"
#include "verify-state.h"
static void handle_du(struct fio_client *client, struct fio_net_cmd *cmd);
static void handle_ts(struct fio_client *client, struct fio_net_cmd *cmd);
static void handle_gs(struct fio_client *client, struct fio_net_cmd *cmd);
static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd);
static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
static void handle_stop(struct fio_client *client);
static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
static void convert_text(struct fio_net_cmd *cmd);
static void client_display_thread_status(struct jobs_eta *je);
struct client_ops fio_client_ops = {
.text = handle_text,
.disk_util = handle_du,
.thread_status = handle_ts,
.group_stats = handle_gs,
.stop = handle_stop,
.start = handle_start,
.eta = client_display_thread_status,
.probe = handle_probe,
.eta_msec = FIO_CLIENT_DEF_ETA_MSEC,
.client_type = FIO_CLIENT_TYPE_CLI,
};
static struct timespec eta_ts;
static FLIST_HEAD(client_list);
static FLIST_HEAD(eta_list);
static FLIST_HEAD(arg_list);
struct thread_stat client_ts;
struct group_run_stats client_gs;
int sum_stat_clients;
static int sum_stat_nr;
static struct buf_output allclients;
static struct json_object *root = NULL;
static struct json_object *job_opt_object = NULL;
static struct json_array *clients_array = NULL;
static struct json_array *du_array = NULL;
static int error_clients;
#define FIO_CLIENT_HASH_BITS 7
#define FIO_CLIENT_HASH_SZ (1 << FIO_CLIENT_HASH_BITS)
#define FIO_CLIENT_HASH_MASK (FIO_CLIENT_HASH_SZ - 1)
static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *, bool *);
static void fio_client_add_hash(struct fio_client *client)
{
int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
bucket &= FIO_CLIENT_HASH_MASK;
flist_add(&client->hash_list, &client_hash[bucket]);
}
static void fio_client_remove_hash(struct fio_client *client)
{
if (!flist_empty(&client->hash_list))
flist_del_init(&client->hash_list);
}
static void fio_init fio_client_hash_init(void)
{
int i;
for (i = 0; i < FIO_CLIENT_HASH_SZ; i++)
INIT_FLIST_HEAD(&client_hash[i]);
}
static int read_data(int fd, void *data, size_t size)
{
ssize_t ret;
while (size) {
ret = read(fd, data, size);
if (ret < 0) {
if (errno == EAGAIN || errno == EINTR)
continue;
break;
} else if (!ret)
break;
else {
data += ret;
size -= ret;
}
}
if (size)
return EAGAIN;
return 0;
}
static int read_ini_data(int fd, void *data, size_t size)
{
char *p = data;
int ret = 0;
FILE *fp;
int dupfd;
dupfd = dup(fd);
if (dupfd < 0)
return errno;
fp = fdopen(dupfd, "r");
if (!fp) {
ret = errno;
close(dupfd);
goto out;
}
while (1) {
ssize_t len;
char buf[OPT_LEN_MAX+1], *sub;
if (!fgets(buf, sizeof(buf), fp)) {
if (ferror(fp)) {
if (errno == EAGAIN || errno == EINTR)
continue;
ret = errno;
}
break;
}
sub = fio_option_dup_subs(buf);
len = strlen(sub);
if (len + 1 > size) {
log_err("fio: no space left to read data\n");
free(sub);
ret = ENOSPC;
break;
}
memcpy(p, sub, len);
free(sub);
p += len;
*p = '\0';
size -= len;
}
fclose(fp);
out:
return ret;
}
static void fio_client_json_init(void)
{
char time_buf[32];
time_t time_p;
if (!(output_format & FIO_OUTPUT_JSON))
return;
time(&time_p);
os_ctime_r((const time_t *) &time_p, time_buf, sizeof(time_buf));
time_buf[strlen(time_buf) - 1] = '\0';
root = json_create_object();
json_object_add_value_string(root, "fio version", fio_version_string);
json_object_add_value_int(root, "timestamp", time_p);
json_object_add_value_string(root, "time", time_buf);
job_opt_object = json_create_object();
json_object_add_value_object(root, "global options", job_opt_object);
clients_array = json_create_array();
json_object_add_value_array(root, "client_stats", clients_array);
du_array = json_create_array();
json_object_add_value_array(root, "disk_util", du_array);
}
static void fio_client_json_fini(void)
{
struct buf_output out;
if (!root)
return;
buf_output_init(&out);
__log_buf(&out, "\n");
json_print_object(root, &out);
__log_buf(&out, "\n");
log_info_buf(out.buf, out.buflen);
buf_output_free(&out);
json_free_object(root);
root = NULL;
job_opt_object = NULL;
clients_array = NULL;
du_array = NULL;
}
static struct fio_client *find_client_by_fd(int fd)
{
int bucket = hash_long(fd, FIO_CLIENT_HASH_BITS) & FIO_CLIENT_HASH_MASK;
struct fio_client *client;
struct flist_head *entry;
flist_for_each(entry, &client_hash[bucket]) {
client = flist_entry(entry, struct fio_client, hash_list);
if (client->fd == fd) {
client->refs++;
return client;
}
}
return NULL;
}
void fio_put_client(struct fio_client *client)
{
if (--client->refs)
return;
log_info_buf(client->buf.buf, client->buf.buflen);
buf_output_free(&client->buf);
free(client->hostname);
if (client->argv)
free(client->argv);
if (client->name)
free(client->name);
while (client->nr_files) {
struct client_file *cf = &client->files[--client->nr_files];
free(cf->file);
}
if (client->files)
free(client->files);
if (client->opt_lists)
free(client->opt_lists);
if (!client->did_stat)
sum_stat_clients--;
if (client->error)
error_clients++;
free(client);
}
static int fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
{
if (!--eta->pending) {
eta_fn(&eta->eta);
free(eta);
return 0;
}
return 1;
}
static void fio_drain_client_text(struct fio_client *client)
{
do {
struct fio_net_cmd *cmd;
cmd = fio_net_recv_cmd(client->fd, false);
if (!cmd)
break;
if (cmd->opcode == FIO_NET_CMD_TEXT) {
convert_text(cmd);
client->ops->text(client, cmd);
}
free(cmd);
} while (1);
}
static void remove_client(struct fio_client *client)
{
assert(client->refs);
dprint(FD_NET, "client: removed <%s>\n", client->hostname);
fio_drain_client_text(client);
if (!flist_empty(&client->list))
flist_del_init(&client->list);
fio_client_remove_hash(client);
if (!flist_empty(&client->eta_list)) {
flist_del_init(&client->eta_list);
fio_client_dec_jobs_eta(client->eta_in_flight, client->ops->eta);
}
close(client->fd);
client->fd = -1;
if (client->ops->removed)
client->ops->removed(client);
nr_clients--;
fio_put_client(client);
}
struct fio_client *fio_get_client(struct fio_client *client)
{
client->refs++;
return client;
}
static void __fio_client_add_cmd_option(struct fio_client *client,
const char *opt)
{
int index;
index = client->argc++;
client->argv = realloc(client->argv, sizeof(char *) * client->argc);
client->argv[index] = strdup(opt);
dprint(FD_NET, "client: add cmd %d: %s\n", index, opt);
}
void fio_client_add_cmd_option(void *cookie, const char *opt)
{
struct fio_client *client = cookie;
struct flist_head *entry;
if (!client || !opt)
return;
__fio_client_add_cmd_option(client, opt);
/*
* Duplicate arguments to shared client group
*/
flist_for_each(entry, &arg_list) {
client = flist_entry(entry, struct fio_client, arg_list);
__fio_client_add_cmd_option(client, opt);
}
}
static struct fio_client *get_new_client(void)
{
struct fio_client *client;
client = malloc(sizeof(*client));
memset(client, 0, sizeof(*client));
INIT_FLIST_HEAD(&client->list);
INIT_FLIST_HEAD(&client->hash_list);
INIT_FLIST_HEAD(&client->arg_list);
INIT_FLIST_HEAD(&client->eta_list);
INIT_FLIST_HEAD(&client->cmd_list);
buf_output_init(&client->buf);
return client;
}
struct fio_client *fio_client_add_explicit(struct client_ops *ops,
const char *hostname, int type,
int port)
{
struct fio_client *client;
client = get_new_client();
if (type == Fio_client_socket)
client->is_sock = true;
else {
int ipv6;
ipv6 = type == Fio_client_ipv6;
if (fio_server_parse_host(hostname, ipv6,
&client->addr.sin_addr,
&client->addr6.sin6_addr))
goto err;
client->port = port;
}
client->fd = -1;
client->ops = ops;
client->refs = 1;
client->type = ops->client_type;
client->hostname = strdup(hostname);
__fio_client_add_cmd_option(client, "fio");
flist_add(&client->list, &client_list);
nr_clients++;
dprint(FD_NET, "client: added <%s>\n", client->hostname);
return client;
err:
free(client);
return NULL;
}
int fio_client_add_ini_file(void *cookie, const char *ini_file, bool remote)
{
struct fio_client *client = cookie;
struct client_file *cf;
size_t new_size;
void *new_files;
if (!client)
return 1;
dprint(FD_NET, "client <%s>: add ini %s\n", client->hostname, ini_file);
new_size = (client->nr_files + 1) * sizeof(struct client_file);
new_files = realloc(client->files, new_size);
if (!new_files)
return 1;
client->files = new_files;
cf = &client->files[client->nr_files];
cf->file = strdup(ini_file);
cf->remote = remote;
client->nr_files++;
return 0;
}
int fio_client_add(struct client_ops *ops, const char *hostname, void **cookie)
{
struct fio_client *existing = *cookie;
struct fio_client *client;
if (existing) {
/*
* We always add our "exec" name as the option, hence 1
* means empty.
*/
if (existing->argc == 1)
flist_add_tail(&existing->arg_list, &arg_list);
else {
while (!flist_empty(&arg_list))
flist_del_init(arg_list.next);
}
}
client = get_new_client();
if (fio_server_parse_string(hostname, &client->hostname,
&client->is_sock, &client->port,
&client->addr.sin_addr,
&client->addr6.sin6_addr,
&client->ipv6)) {
fio_put_client(client);
return -1;
}
client->fd = -1;
client->ops = ops;
client->refs = 1;
client->type = ops->client_type;
__fio_client_add_cmd_option(client, "fio");
flist_add(&client->list, &client_list);
nr_clients++;
dprint(FD_NET, "client: added <%s>\n", client->hostname);
*cookie = client;
return 0;
}
static const char *server_name(struct fio_client *client, char *buf,
size_t bufsize)
{
const char *from;
if (client->ipv6)
from = inet_ntop(AF_INET6, (struct sockaddr *) &client->addr6.sin6_addr, buf, bufsize);
else if (client->is_sock)
from = "sock";
else
from = inet_ntop(AF_INET, (struct sockaddr *) &client->addr.sin_addr, buf, bufsize);
return from;
}
static void probe_client(struct fio_client *client)
{
struct cmd_client_probe_pdu pdu;
const char *sname;
uint64_t tag;
char buf[64];
dprint(FD_NET, "client: send probe\n");
#ifdef CONFIG_ZLIB
pdu.flags = __le64_to_cpu(FIO_PROBE_FLAG_ZLIB);
#else
pdu.flags = 0;
#endif
sname = server_name(client, buf, sizeof(buf));
memset(pdu.server, 0, sizeof(pdu.server));
snprintf((char *) pdu.server, sizeof(pdu.server), "%s", sname);
fio_net_send_cmd(client->fd, FIO_NET_CMD_PROBE, &pdu, sizeof(pdu), &tag, &client->cmd_list);
}
static int fio_client_connect_ip(struct fio_client *client)
{
struct sockaddr *addr;
socklen_t socklen;
int fd, domain;
if (client->ipv6) {
client->addr6.sin6_family = AF_INET6;
client->addr6.sin6_port = htons(client->port);
domain = AF_INET6;
addr = (struct sockaddr *) &client->addr6;
socklen = sizeof(client->addr6);
} else {
client->addr.sin_family = AF_INET;
client->addr.sin_port = htons(client->port);
domain = AF_INET;
addr = (struct sockaddr *) &client->addr;
socklen = sizeof(client->addr);
}
fd = socket(domain, SOCK_STREAM, 0);
if (fd < 0) {
int ret = -errno;
log_err("fio: socket: %s\n", strerror(errno));
return ret;
}
if (connect(fd, addr, socklen) < 0) {
int ret = -errno;
log_err("fio: connect: %s\n", strerror(errno));
log_err("fio: failed to connect to %s:%u\n", client->hostname,
client->port);
close(fd);
return ret;
}
return fd;
}
static int fio_client_connect_sock(struct fio_client *client)
{
struct sockaddr_un *addr = &client->addr_un;
socklen_t len;
int fd;
memset(addr, 0, sizeof(*addr));
addr->sun_family = AF_UNIX;
snprintf(addr->sun_path, sizeof(addr->sun_path), "%s",
client->hostname);
fd = socket(AF_UNIX, SOCK_STREAM, 0);
if (fd < 0) {
int ret = -errno;
log_err("fio: socket: %s\n", strerror(errno));
return ret;
}
len = sizeof(addr->sun_family) + strlen(addr->sun_path) + 1;
if (connect(fd, (struct sockaddr *) addr, len) < 0) {
int ret = -errno;
log_err("fio: connect; %s\n", strerror(errno));
close(fd);
return ret;
}
return fd;
}
int fio_client_connect(struct fio_client *client)
{
int fd;
dprint(FD_NET, "client: connect to host %s\n", client->hostname);
if (client->is_sock)
fd = fio_client_connect_sock(client);
else
fd = fio_client_connect_ip(client);
dprint(FD_NET, "client: %s connected %d\n", client->hostname, fd);
if (fd < 0)
return fd;
client->fd = fd;
fio_client_add_hash(client);
client->state = Client_connected;
probe_client(client);
return 0;
}
int fio_client_terminate(struct fio_client *client)
{
return fio_net_send_quit(client->fd);
}
static void fio_clients_terminate(void)
{
struct flist_head *entry;
struct fio_client *client;
dprint(FD_NET, "client: terminate clients\n");
flist_for_each(entry, &client_list) {
client = flist_entry(entry, struct fio_client, list);
fio_client_terminate(client);
}
}
static void sig_int(int sig)
{
dprint(FD_NET, "client: got signal %d\n", sig);
fio_clients_terminate();
}
static void client_signal_handler(void)
{
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGINT, &act, NULL);
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGTERM, &act, NULL);
/* Windows uses SIGBREAK as a quit signal from other applications */
#ifdef WIN32
memset(&act, 0, sizeof(act));
act.sa_handler = sig_int;
act.sa_flags = SA_RESTART;
sigaction(SIGBREAK, &act, NULL);
#endif
memset(&act, 0, sizeof(act));
act.sa_handler = sig_show_status;
act.sa_flags = SA_RESTART;
sigaction(SIGUSR1, &act, NULL);
}
static int send_client_cmd_line(struct fio_client *client)
{
struct cmd_single_line_pdu *cslp;
struct cmd_line_pdu *clp;
unsigned long offset;
unsigned int *lens;
void *pdu;
size_t mem;
int i, ret;
dprint(FD_NET, "client: send cmdline %d\n", client->argc);
lens = malloc(client->argc * sizeof(unsigned int));
/*
* Find out how much mem we need
*/
for (i = 0, mem = 0; i < client->argc; i++) {
lens[i] = strlen(client->argv[i]) + 1;
mem += lens[i];
}
/*
* We need one cmd_line_pdu, and argc number of cmd_single_line_pdu
*/
mem += sizeof(*clp) + (client->argc * sizeof(*cslp));
pdu = malloc(mem);
clp = pdu;
offset = sizeof(*clp);
for (i = 0; i < client->argc; i++) {
uint16_t arg_len = lens[i];
cslp = pdu + offset;
strcpy((char *) cslp->text, client->argv[i]);
cslp->len = cpu_to_le16(arg_len);
offset += sizeof(*cslp) + arg_len;
}
free(lens);
clp->lines = cpu_to_le16(client->argc);
clp->client_type = __cpu_to_le16(client->type);
ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOBLINE, pdu, mem, NULL, NULL);
free(pdu);
return ret;
}
int fio_clients_connect(void)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
int ret;
#ifdef WIN32
WSADATA wsd;
WSAStartup(MAKEWORD(2, 2), &wsd);
#endif
dprint(FD_NET, "client: connect all\n");
client_signal_handler();
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
ret = fio_client_connect(client);
if (ret) {
remove_client(client);
continue;
}
if (client->argc > 1)
send_client_cmd_line(client);
}
return !nr_clients;
}
int fio_start_client(struct fio_client *client)
{
dprint(FD_NET, "client: start %s\n", client->hostname);
return fio_net_send_simple_cmd(client->fd, FIO_NET_CMD_RUN, 0, NULL);
}
int fio_start_all_clients(void)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
int ret;
dprint(FD_NET, "client: start all\n");
fio_client_json_init();
flist_for_each_safe(entry, tmp, &client_list) {
client = flist_entry(entry, struct fio_client, list);
ret = fio_start_client(client);
if (ret) {
remove_client(client);
continue;
}
}
return flist_empty(&client_list);
}
static int __fio_client_send_remote_ini(struct fio_client *client,
const char *filename)
{
struct cmd_load_file_pdu *pdu;
size_t p_size;
int ret;
dprint(FD_NET, "send remote ini %s to %s\n", filename, client->hostname);
p_size = sizeof(*pdu) + strlen(filename) + 1;
pdu = malloc(p_size);
memset(pdu, 0, p_size);
pdu->name_len = strlen(filename);
strcpy((char *) pdu->file, filename);
pdu->client_type = cpu_to_le16((uint16_t) client->type);
client->sent_job = true;
ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_LOAD_FILE, pdu, p_size,NULL, NULL);
free(pdu);
return ret;
}
/*
* Send file contents to server backend. We could use sendfile(), but to remain
* more portable lets just read/write the darn thing.
*/
static int __fio_client_send_local_ini(struct fio_client *client,
const char *filename)
{
struct cmd_job_pdu *pdu;
size_t p_size;
struct stat sb;
char *p;
void *buf;
off_t len;
int fd, ret;
dprint(FD_NET, "send ini %s to %s\n", filename, client->hostname);
fd = open(filename, O_RDONLY);
if (fd < 0) {
ret = -errno;
log_err("fio: job file <%s> open: %s\n", filename, strerror(errno));
return ret;
}
if (fstat(fd, &sb) < 0) {
ret = -errno;
log_err("fio: job file stat: %s\n", strerror(errno));
close(fd);
return ret;
}
/*
* Add extra space for variable expansion, but doesn't guarantee.
*/
sb.st_size += OPT_LEN_MAX;
p_size = sb.st_size + sizeof(*pdu);
pdu = malloc(p_size);
buf = pdu->buf;
len = sb.st_size;
p = buf;
if (read_ini_data(fd, p, len)) {
log_err("fio: failed reading job file %s\n", filename);
close(fd);
free(pdu);
return 1;
}
pdu->buf_len = __cpu_to_le32(sb.st_size);
pdu->client_type = cpu_to_le32(client->type);
client->sent_job = true;
ret = fio_net_send_cmd(client->fd, FIO_NET_CMD_JOB, pdu, p_size, NULL, NULL);
free(pdu);
close(fd);
return ret;
}
int fio_client_send_ini(struct fio_client *client, const char *filename,
bool remote)
{
int ret;
if (!remote)
ret = __fio_client_send_local_ini(client, filename);
else
ret = __fio_client_send_remote_ini(client, filename);
if (!ret)
client->sent_job = true;
return ret;
}
static int fio_client_send_cf(struct fio_client *client,
struct client_file *cf)
{
return fio_client_send_ini(client, cf->file, cf->remote);
}
int fio_clients_send_ini(const char *filename)
{
struct fio_client *client;
struct flist_head *entry, *tmp;
flist_for_each_safe(entry, tmp, &client_list) {
bool failed = false;
client = flist_entry(entry, struct fio_client, list);
if (client->nr_files) {
int i;
for (i = 0; i < client->nr_files; i++) {
struct client_file *cf;
cf = &client->files[i];
if (fio_client_send_cf(client, cf)) {
failed = true;
remove_client(client);
break;
}
}
}
if (client->sent_job || failed)
continue;
if (!filename || fio_client_send_ini(client, filename, 0))
remove_client(client);
}
return !nr_clients;
}
int fio_client_update_options(struct fio_client *client,
struct thread_options *o, uint64_t *tag)
{
struct cmd_add_job_pdu pdu;
pdu.thread_number = cpu_to_le32(client->thread_number);
pdu.groupid = cpu_to_le32(client->groupid);
convert_thread_options_to_net(&pdu.top, o);
return fio_net_send_cmd(client->fd, FIO_NET_CMD_UPDATE_JOB, &pdu, sizeof(pdu), tag, &client->cmd_list);
}
static void convert_io_stat(struct io_stat *dst, struct io_stat *src)
{
dst->max_val = le64_to_cpu(src->max_val);
dst->min_val = le64_to_cpu(src->min_val);
dst->samples = le64_to_cpu(src->samples);
/*
* Floats arrive as IEEE 754 encoded uint64_t, convert back to double
*/
dst->mean.u.f = fio_uint64_to_double(le64_to_cpu(dst->mean.u.i));
dst->S.u.f = fio_uint64_to_double(le64_to_cpu(dst->S.u.i));
}
static void convert_ts(struct thread_stat *dst, struct thread_stat *src)
{
int i, j, k;
dst->error = le32_to_cpu(src->error);
dst->thread_number = le32_to_cpu(src->thread_number);
dst->groupid = le32_to_cpu(src->groupid);
dst->pid = le32_to_cpu(src->pid);
dst->members = le32_to_cpu(src->members);
dst->unified_rw_rep = le32_to_cpu(src->unified_rw_rep);
for (i = 0; i < DDIR_RWDIR_CNT; i++) {
convert_io_stat(&dst->clat_stat[i], &src->clat_stat[i]);
convert_io_stat(&dst->slat_stat[i], &src->slat_stat[i]);
convert_io_stat(&dst->lat_stat[i], &src->lat_stat[i]);
convert_io_stat(&dst->bw_stat[i], &src->bw_stat[i]);
convert_io_stat(&dst->iops_stat[i], &src->iops_stat[i]);
}
convert_io_stat(&dst->sync_stat, &src->sync_stat);
dst->usr_time = le64_to_cpu(src->usr_time);
dst->sys_time = le64_to_cpu(src->sys_time);
dst->ctx = le64_to_cpu(src->ctx);
dst->minf = le64_to_cpu(src->minf);
dst->majf = le64_to_cpu(src->majf);
dst->clat_percentiles = le32_to_cpu(src->clat_percentiles);
dst->lat_percentiles = le32_to_cpu(src->lat_percentiles);
dst->slat_percentiles = le32_to_cpu(src->slat_percentiles);
dst->percentile_precision = le64_to_cpu(src->percentile_precision);
for (i = 0; i < FIO_IO_U_LIST_MAX_LEN; i++) {
fio_fp64_t *fps = &src->percentile_list[i];
fio_fp64_t *fpd = &dst->percentile_list[i];
fpd->u.f = fio_uint64_to_double(le64_to_cpu(fps->u.i));
}
for (i = 0; i < FIO_IO_U_MAP_NR; i++) {
dst->io_u_map[i] = le64_to_cpu(src->io_u_map[i]);
dst->io_u_submit[i] = le64_to_cpu(src->io_u_submit[i]);
dst->io_u_complete[i] = le64_to_cpu(src->io_u_complete[i]);
}
for (i = 0; i < FIO_IO_U_LAT_N_NR; i++)
dst->io_u_lat_n[i] = le64_to_cpu(src->io_u_lat_n[i]);
for (i = 0; i < FIO_IO_U_LAT_U_NR; i++)
dst->io_u_lat_u[i] = le64_to_cpu(src->io_u_lat_u[i]);
for (i = 0; i < FIO_IO_U_LAT_M_NR; i++)
dst->io_u_lat_m[i] = le64_to_cpu(src->io_u_lat_m[i]);
for (i = 0; i < FIO_LAT_CNT; i++)
for (j = 0; j < DDIR_RWDIR_CNT; j++)
for (k = 0; k < FIO_IO_U_PLAT_NR; k++)
dst->io_u_plat[i][j][k] = le64_to_cpu(src->io_u_plat[i][j][k]);