解释一个词语:preemption

来源:互联网 发布:制冷系统设计软件 编辑:程序博客网 时间:2024/03/29 19:58

Merriam-Webster的解为:

preemption

n

1 the right of purchasing befor others; especially: one given by the government to the actual settler upon a tract of public land

2 the purchase of something under this right

3 a prior seizure or appropriation: a taking posssession before others

 

 

CONFIG_PREEMPT - This option reduces the latency of the kernel when reacting to real-time or interactive events by allowing a low priority process tobe preempted even if it is in kernel mode executing a system call.Say Y here if you are building a kernel for a desktop, embeddedor real-time system. Say N if you are unsure.
CONFIG_PREEMPT_BKL - This option reduces the latency of the kernel by making the big kernel lock (BKL)preemptible.Say Y here if you are building a kernel for a desktop system.Say N if you are unsure. 

 

原创粉丝点击