Function callout_cc_add

freebsd/kern/kern_timeout.c:565–603

}

static void
callout_cc_add(struct callout *c, struct callout_cpu *cc,
    sbintime_t sbt, sbintime_t precision, void (*func)(void *),
    void *arg, int cpu, int flags)
{
	int bucket;

	CC_LOCK_ASSERT(cc);
	if (sbt < cc->cc_lastscan)
		sbt = cc->cc_lastscan;
	c->c_arg = arg;
	c->c_iflags |= CALLOUT_PENDING;
	c->c_iflags &= ~CALLOUT_PROCESSED;
	c->c_flags |= CALLOUT_ACTIVE;
	if (flags & C_DIRECT_EXEC)
		c->c_iflags |= CALLOUT_DIRECT;
	c->c_func = func;
	c->c_time = sbt;
	c->c_precision = precision;
	bucket = callout_get_bucket(c->c_time);
	CTR3(KTR_CALLOUT, "precision set for %p: %d.%08x",
	    c, (int)(c->c_precision >> 32),
	    (u_int)(c->c_precision & 0xffffffff));
	LIST_INSERT_HEAD(&cc->cc_callwheel[bucket], c, c_links.le);
	if (cc->cc_bucket == bucket)
		cc_exec_next(cc) = c;

	/*
	 * Inform the eventtimers(4) subsystem there's a new callout
	 * that has been inserted, but only if really required.
	 */
	if (SBT_MAX - c->c_time < c->c_precision)
		c->c_precision = SBT_MAX - c->c_time;
	sbt = c->c_time + c->c_precision;
	if (sbt < cc->cc_firstevent) {
		cc->cc_firstevent = sbt;
		cpu_new_callout(cpu, sbt, c->c_time);
	}
}

static void
softclock_call_cc(struct callout *c, struct callout_cpu *cc,