内核抢占到底发生在什么时候

Question

RT

Answer 1

进程切换而已，

Answer 2

有几个抢占点，在LKD里有详细说明

Answer 3

有几个抢占点，在LKD里有详细说明
amarant 发表于 2011-06-17 08:05

·When an interrupt handler exits, before returning to kernel-space
·When kernel code becomes preemptible again
·If a task in the kernel explicitly calls schedule()
·If a task in the kernel blocks (which results in a call to schedule())