linux内核定时器代码

最基本的内核定时器实现

struct timer_list print_timer;
static void print_message(unsigned long arg){
    printk("period print message\n");
    struct timer_list *timer=(struct timer_list *)arg;
    timer->expires = jiffies + 10*HZ;
    add_timer( timer );
}
#define ACCESS_CHECK_INTERVAL 4*HZ

static int __init netlink_init(void)
{

   // access_check_timer_startup( &access_check_timer);
   init_timer(&print_timer);
   print_timer.expires = jiffies + ACCESS_CHECK_INTERVAL;
        print_timer.function = print_message;
        print_timer.data = (unsigned long)&print_timer;
        add_timer( &print_timer );
      printk("hello moto\n");

    return 0;
}

static void __exit netlink_exit(void)
{
    printk("byebye\n");
    del_timer( &print_timer );/* 删除定时器*/

}

module_init(netlink_init);
module_exit(netlink_exit);