int
kperf_sampling_enable(void)
{
if (sampling_status == KPERF_SAMPLING_ON) {
return 0;
}
if (sampling_status != KPERF_SAMPLING_OFF) {
panic("kperf: sampling was %d when asked to enable", sampling_status);
}
/* make sure interrupt tables and actions are initted */
if (!kperf_initted || (kperf_action_get_count() == 0)) {
return ECANCELED;
}
/* mark as running */
sampling_status = KPERF_SAMPLING_ON;
kperf_lightweight_pet_active_update();
/* tell timers to enable */
kperf_timer_go();
return 0;
}
int
kperf_kdebug_set_action(int action_id)
{
if (action_id < 0 || (unsigned int)action_id > kperf_action_get_count()) {
return EINVAL;
}
kperf_kdebug_action = action_id;
kperf_kdebug_update();
return 0;
}
static int
sysctl_action_count( struct sysctl_oid *oidp, struct sysctl_req *req )
{
int error = 0;
uint32_t value = 0;
/* get the old value and process it */
value = kperf_action_get_count();
/* copy out the old value, get the new value */
error = sysctl_handle_int(oidp, &value, 0, req);
if (error || !req->newptr)
return (error);
/* if that worked, and we're writing... */
return kperf_action_set_count(value);
}
