how to determine whether a function can sleep or not?

Question

In the Linux, interrupt handler which also called top half cannot sleep.

The issue is that How can I determine whether a function can cause sleep?

Can I use input_event, input_sync in top half?

score 0 · Answer 1 · answered Jul 17 '13 at 09:19

How can I determine whether a function can cause sleep?

If any IO-bound operation is done, it may sleep. but I doubt any specific tool which finds whether it will sleep or not.

1 Answers1