rtthread多核移植时，一个核就得对应一个定时器吗

/* src/clock.c */
/**
 * This function will notify kernel there is one tick passed. Normally,
 * this function is invoked by clock ISR.
 */
void rt_tick_increase(void)
{
    struct rt_thread *thread;
    /* increase the global tick */
#ifdef RT_USING_SMP
    rt_cpu_self()->tick ++;
#else
    ++ rt_tick;
#endif
    /* check time slice */
    thread = rt_thread_self();
    -- thread->remaining_tick;
    if (thread->remaining_tick == 0)
    {
        /* change to initialized tick */
        thread->remaining_tick = thread->init_tick;
        thread->stat |= RT_THREAD_STAT_YIELD;
        /* yield */
        rt_thread_yield();
    }
    /* check timer */
    rt_timer_check();
}

/* src/clock.c */
#ifdef RT_USING_SMP
#define rt_tick rt_cpu_index(0)->tick
#else
static rt_tick_t rt_tick = 0;
#endif