Function timer_get_prev_entries

dpdk/lib/timer/rte_timer.c:347–360

* For a given time value, get the entries at each level which * are <= that time value. */

 * are <= that time value.
 */
static void
timer_get_prev_entries(uint64_t time_val, unsigned tim_lcore,
		       struct rte_timer **prev, struct priv_timer *priv_timer)
{
	unsigned lvl = priv_timer[tim_lcore].curr_skiplist_depth;
	prev[lvl] = &priv_timer[tim_lcore].pending_head;
	while(lvl != 0) {
		lvl--;
		prev[lvl] = prev[lvl+1];
		while (prev[lvl]->sl_next[lvl] &&
				prev[lvl]->sl_next[lvl]->expire <= time_val)
			prev[lvl] = prev[lvl]->sl_next[lvl];
	}
}

/*
 * Given a timer node in the skiplist, find the previous entries for it at