Re: calling kthread_create() from interrupt thread

Dean Nelson
2004-06-15T19:14:13Z

On Tue, Jun 15, 2004 at 07:49:37PM +0200, Arjan van de Ven wrote:
> On Tue, 2004-06-15 at 19:42, Dean Nelson wrote:
> > I'm working on a driver that needs to create threads that can sleep/block
> > for an indefinite period of time.
> >
> > . Can kthread_create() be called from an interrupt handler?
>
> no
>
> >
> > . Is the cost of a kthread's creation/demise low enough so that one
> > can, as often as needed, create a kthread that performs a simple
> > function and exits? Or is the cost too high for this?
>
> for that we have keventd in 2.4, work queues in 2.6

Can an interrupt handler setup a work_struct structure, call schedule_work()
and then simply return, not waiting around for the work queue event to
complete?

Thanks,
Dean