Re: [PATCH RT] Defer migrate_enable migration while task state != TASK_RUNNING

[Steven Rostedt]

On Mon, 26 Mar 2018 11:54:51 -0400
joe.korty@xxxxxxxxxxxxxxxxx wrote:

> Oh well.  Makes me wonder why might_sleep is testing for
> !TASK_RUNNABLE though.

Because might_sleep() is used when the function might call schedule()
directly. And schedule() *will* change the task state to TASK_RUNNING.
might_sleep() has nothing to do with preemption.

-- Steve