The output of our module is generated by printk(); This function prints to the system file
/var/log/messages by default. we can views this type: tail /var/log/messages//动态的观察这个文件
The output of our module is generated by printk(); This function prints to the system file
/var/log/messages by default. we can views this type: tail /var/log/messages//动态的观察这个文件