linux内核任务

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>

static int thread_fn(void *unused)
{
    while (!kthread_should_stop()) {
        printk(KERN_INFO "Hello, World!\n");
        set_current_state(TASK_INTERRUPTIBLE);
        schedule_timeout(HZ * 1); // Sleep for 1 second
    }
    return 0;
}

static struct task_struct *thread;

static int __init my_module_init(void)
{
    thread = kthread_run(thread_fn, NULL, "my_kernel_thread");
    if (thread)
        printk(KERN_INFO "Kernel thread created\n");
    else
        printk(KERN_ERR "Failed to create kernel thread
");
    return 0;
}

static void __exit my_module_exit(void)
{
    if (thread) {
        kthread_stop(thread);
        printk(KERN_INFO "Kernel thread stopped
");
    }
}

module_init(my_module_init);
module_exit(my_module_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("A simple Linux kernel thread example");