C code——kthread_create 创建线程

#include <stdio.h>
#include <linux/sched.h>

static struct task_struct *test_task = NULL;

static int test_monitor_process(void *data)
{
    while(!kthread_should_stop())
    {
        printf("hhhh\n");
    }

    return 0;
}

static int __init thread_test_init(void)
{
    int ret = 0;
    printk("modprobe thread");
    test_task = kthread_create(test_monitor_process, 0, "test_monitor");
    if(!IS_ERR(test_task))
    {
        struct sched_param param = {.sched_priority = 91,};
        sched_setscheduler(test_task, SCHED_FIFO, &param);
        wake_up_process(test_task);
        printk("start test monitor thread successfully!\n");
    }
    else
    {
        printk("start test monitor thread failed!\n");
        ret = -ENOMEM;
    }

    return ret;
}

static void __exit thread_test_exit(void)
{
    printk("exit thread mod");
    kthread_stop(test_task);
}

module_init(thread_test_init);
module_exit(thread_test_exit);

kthread_create 创建
sched_setscheduler 设置优先级
wake_up_process 拉起
kthread_stop 停止