linux中断上下文与睡眠

keyword: linux, interrupt context, sleep

1 Interrupt context is not associated with a process.

The "current" macro is not relevant.

So, there is no backing process. => no reschedule process

note:

A "sleep" is a state of process.

schedule operates on process.

Why interrupt is not associated with a process?

2 Interrupt is about hardware

Interrupt is used for communication between device and CPU, and it async with the software

process is a software.

So, interrupt is async with any process. 

author:xiaosun

reference:

unix internal 

linux kernel development