linux timer使用



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

MODULE_LICENSE("GPL");
static struct timer_list timer;
static char* msg = "hello world";
static void print_func(unsigned long lparam){
    char* str = (char*)lparam;
    printk("%s %ld\n",str,jiffies);
    init_timer(&timer);
    timer.expires = jiffies + 5*HZ;
    timer.function = print_func;
    timer.data = (unsigned long) msg;  
    add_timer(&timer);
}
static int hello_init(void){
    printk("timer test\n");
    init_timer(&timer);
    timer.data = (unsigned long) msg;
    timer.expires = jiffies + 1*HZ;
    timer.function = print_func;
    add_timer(&timer);
    return 0;
}
static void hello_exit(void){
   del_timer(&timer);
    printk("good bye\n");

}
module_init(hello_init);
module_exit(hello_exit);