[转]系统调用和context switch

转自  

 https://zhuanlan.zhihu.com/p/52845869

https://en.wikipedia.org/wiki/Context_switch

 

深入理解内核进程上下文切换  https://mp.weixin.qq.com/s/b-sfGCbR6Rp5CNI-3_S1cA