Quoting jeff.mcgee at intel.com (2018-03-16 18:31:05)
> +bool intel_engine_cancel_fpreempt(struct intel_engine_cs *engine)
> +{
> + hrtimer_cancel(&engine->fpreempt_timer);
Can not be used inside the tasklet as the hrtimer may also be a tasklet
on the same CPU; so busy spin deadlock.
-Chris