如何在linux内核中连接多个线程

经过一些实验,这似乎是在内核中模拟基本线程连接的最佳方法。我使用了completion方法,而不是semaphore方法,因为我发现它更简单。

struct my_thread_data {
    struct completion *comp;
    ... // anything else you want to pass through
};

void *foo(void *arg) {
    // doing something
    return NULL;
}

int init_module(void) {
    struct task_struct *threads[5];
    struct completion comps[5];
    struct my_thread_data data[5];

    int i;

    for (i=0; i<5; i++) {
        init_completion(comps + i);
        data[i].comp = comps + i;
        thread[i] = kthread_run(&foo, (void*)(data + i), "ThreadName");
    }

    // wait here until all 5 threads are complete
    for (i=0; i<5; i++) {                                                                             
        wait_for_completion(comps + i);                                                                                                                
    }

    // do something else once threads are complete

    return 0;
}