How should a driver shutdown a taskqueue on detach?

[Ryan Stone]

On Wed, Jul 1, 2015 at 5:32 PM, Konstantin Belousov <kostikbel at gmail.com>
wrote:

> Do you mean, you want some KPI like
>         boolean taskqueue_is_draining(struct taskqueue *p);
> so that e.g. executed task could see if it is executing in the
> shutdown state ?


I'd prefer a KPI that stops a taskqueue from accepting new tasks (and drops
attempts to enqueue on the floor).  Then I could do something like:

taskqueue_stop()
disable_interrupts()
taskqueue_drain_all()
taskqueue_free()