static void fill_secmon_params(struct secmon_params *p,
void (*bsp_entry)(void *), void *bsp_arg)
{
const struct spintable_attributes *spin_attrs;
memset(p, 0, sizeof(*p));
p->online_cpus = cpus_online();
spin_attrs = spintable_get_attributes();
if (spin_attrs != NULL) {
p->secondary.run = spin_attrs->entry;
p->secondary.arg = spin_attrs->addr;
}
p->bsp.run = bsp_entry;
p->bsp.arg = bsp_arg;
}
void fio_idle_prof_init(void)
{
int i, ret;
struct timeval tp;
struct timespec ts;
pthread_attr_t tattr;
struct idle_prof_thread *ipt;
ipc.nr_cpus = cpus_online();
ipc.status = IDLE_PROF_STATUS_OK;
if (ipc.opt == IDLE_PROF_OPT_NONE)
return;
if ((ret = pthread_attr_init(&tattr))) {
log_err("fio: pthread_attr_init %s\n", strerror(ret));
return;
}
if ((ret = pthread_attr_setscope(&tattr, PTHREAD_SCOPE_SYSTEM))) {
log_err("fio: pthread_attr_setscope %s\n", strerror(ret));
return;
}
ipc.ipts = malloc(ipc.nr_cpus * sizeof(struct idle_prof_thread));
if (!ipc.ipts) {
log_err("fio: malloc failed\n");
return;
}
ipc.buf = malloc(ipc.nr_cpus * page_size);
if (!ipc.buf) {
log_err("fio: malloc failed\n");
free(ipc.ipts);
return;
}
/*
* profiling aborts on any single thread failure since the
* result won't be accurate if any cpu is not used.
*/
for (i = 0; i < ipc.nr_cpus; i++) {
ipt = &ipc.ipts[i];
ipt->cpu = i;
ipt->state = TD_NOT_CREATED;
ipt->data = (unsigned char *)(ipc.buf + page_size * i);
if ((ret = pthread_mutex_init(&ipt->init_lock, NULL))) {
ipc.status = IDLE_PROF_STATUS_ABORT;
log_err("fio: pthread_mutex_init %s\n", strerror(ret));
break;
}
if ((ret = pthread_mutex_init(&ipt->start_lock, NULL))) {
ipc.status = IDLE_PROF_STATUS_ABORT;
log_err("fio: pthread_mutex_init %s\n", strerror(ret));
break;
}
if ((ret = pthread_cond_init(&ipt->cond, NULL))) {
ipc.status = IDLE_PROF_STATUS_ABORT;
log_err("fio: pthread_cond_init %s\n", strerror(ret));
break;
}
/* make sure all threads are spawned before they start */
pthread_mutex_lock(&ipt->init_lock);
/* make sure all threads finish init before profiling starts */
pthread_mutex_lock(&ipt->start_lock);
if ((ret = pthread_create(&ipt->thread, &tattr, idle_prof_thread_fn, ipt))) {
ipc.status = IDLE_PROF_STATUS_ABORT;
log_err("fio: pthread_create %s\n", strerror(ret));
break;
} else
ipt->state = TD_CREATED;
if ((ret = pthread_detach(ipt->thread))) {
/* log error and let the thread spin */
log_err("fio: pthread_detatch %s\n", strerror(ret));
}
}
/*
* let good threads continue so that they can exit
* if errors on other threads occurred previously.
*/
for (i = 0; i < ipc.nr_cpus; i++) {
ipt = &ipc.ipts[i];
pthread_mutex_unlock(&ipt->init_lock);
}
if (ipc.status == IDLE_PROF_STATUS_ABORT)
return;
/* wait for calibration to finish */
for (i = 0; i < ipc.nr_cpus; i++) {
ipt = &ipc.ipts[i];
pthread_mutex_lock(&ipt->init_lock);
while ((ipt->state != TD_EXITED) &&
(ipt->state!=TD_INITIALIZED)) {
fio_gettime(&tp, NULL);
ts.tv_sec = tp.tv_sec + 1;
ts.tv_nsec = tp.tv_usec * 1000;
pthread_cond_timedwait(&ipt->cond, &ipt->init_lock, &ts);
}
pthread_mutex_unlock(&ipt->init_lock);
/*
* any thread failed to initialize would abort other threads
* later after fio_idle_prof_start.
*/
if (ipt->state == TD_EXITED)
ipc.status = IDLE_PROF_STATUS_ABORT;
}
if (ipc.status != IDLE_PROF_STATUS_ABORT)
calibration_stats();
else
ipc.cali_mean = ipc.cali_stddev = 0.0;
if (ipc.opt == IDLE_PROF_OPT_CALI)
ipc.status = IDLE_PROF_STATUS_CALI_STOP;
}