linux 驱动延时us

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/timer.h>

static struct timer_list my_timer;

void timer_callback(struct timer_list *t) {
    printk(KERN_INFO "Timer expired\n");
}

static int __init my_driver_init(void) {
    printk(KERN_INFO "Driver loaded\n");

    // 初始化定时器
    timer_setup(&my_timer, timer_callback, 0);
    my_timer.expires = jiffies + msecs_to_jiffies(1000); // 1秒延时
    add_timer(&my_timer);

    return 0;
}

static void __exit my_driver_exit(void) {
    printk(KERN_INFO "Driver unloaded\n");
    del_timer_sync(&my_timer);
}

module_init(my_driver_init);
module_exit(my_driver_exit);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Your Name");
MODULE_DESCRIPTION("A simple Linux driver with timer delay");