1.exceed
/*当xxx超过xxx,它将从0重新开始增加*/
when the counter exceeds the max value, it will increment again from 0
2.every
/*每隔XXX执行xx*/
Excuted twice every ten milliseconds
3.assembly diagram 转配 图
Appendix:附录 linux内核镜像,包含git commit, 看看ubuntu里面怎么写commit