linux 关闭timer

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

struct timer_list my_timer;

void my_timer_callback(unsigned long data) {
    printk(KERN_INFO "Timer expired!\n");
}

int init_module(void) {
    printk(KERN_INFO "Initializing module...\n");

    // 初始化定时器
    init_timer(&my_timer);
    my_timer.function = my_timer_callback;
    my_timer.expires = jiffies + msecs_to_jiffies(5000); // 5秒后触发
    add_timer(&my_timer);

    return 0;
}

void cleanup_module(void) {
    printk(KERN_INFO "Cleaning up module...\n");

    // 删除定时器
    del_timer_sync(&my_timer);
}

MODULE_LICENSE("GPL");

#include <linux/module.h>
#include <linux/hrtimer.h>
#include <linux/ktime.h>

static struct hrtimer my_hrtimer;

enum hrtimer_restart my_hrtimer_callback(struct hrtimer *timer) {
    printk(KERN_INFO "High-resolution timer expired!\n");
    hrtimer_start(timer, ktime_set(5, 0), HRTIMER_MODE_REL);
    return HRTIMER_RESTART;
}

int init_module(void) {
    printk(KERN_INFO "Initializing module...\n");

    // 初始化并启动高精度定时器
    hrtimer_init(&my_hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
    my_hrtimer.function = my_hrtimer_callback;
    hrtimer_start(&my_hrtimer, ktime_set(5, 0), HRTIMER_MODE_REL);

    return 0;
}

void cleanup_module(void) {
    printk(KERN_INFO "Cleaning up module...\n");

    // 取消高精度定时器
    hrtimer_cancel(&my_hrtimer);
}

MODULE_LICENSE("GPL");