Function filt_timerstart

freebsd/kern/kern_event.c:762–777

}

static void
filt_timerstart(struct knote *kn, sbintime_t to)
{
	struct kq_timer_cb_data *kc;

	kc = kn->kn_ptr.p_v;
	if ((kn->kn_sfflags & NOTE_ABSTIME) != 0) {
		kc->next = to;
		kc->to = 0;
	} else {
		kc->next = to + sbinuptime();
		kc->to = to;
	}
	callout_reset_sbt_on(&kc->c, kc->next, 0, filt_timerexpire, kn,
	    PCPU_GET(cpuid), C_ABSOLUTE);
}

static void
filt_timerdetach(struct knote *kn)