Linux kernel 多队列和工作队列

我正在学习在linux内核中编写下半部分代码的工作队列。

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我想知道：如果中断处理程序被执行两次（因此调用

schedule\u work

两次），那么工作队列处理程序会被调用一次还是两次

您的答案似乎在函数的注释中

/**
 * schedule_work - put work task in global workqueue
 * @work: job to be done
 *
 * Returns zero if @work was already on the kernel-global workqueue and
 * non-zero otherwise.
 *
 * This puts a job in the kernel-global workqueue if it was not already
 * queued and leaves it in the same position on the kernel-global
 * workqueue otherwise.
 */
int schedule_work(struct work_struct *work)
{
        return queue_work(keventd_wq, work);
}