[Intel-gfx] [PATCH igt 2/3] igt/gem_exec_schedule: Basic tests for preemption

[Michał Winiarski]

On Thu, Aug 03, 2017 at 01:30:28PM +0100, Chris Wilson wrote:
> We queue N low priority hanging batches across the engines
> and check that out high priority write over takes them.

s/out/our

> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

I'm getting stuck on throttle when spawning 10+ spin_batch instances.
Other than that - the tests look good, simple and quick to execute.
(cross-engine failing in my tree... but that's a good thing!)
I thought about adding different spin_batch variants rather than adding
MI_ARB_CHK by default, but I guess it shouldn't matter (and if it does, we
should notice something in other tests).

Reviewed-by: Michał Winiarski <michal.winiarski at intel.com>

Note that we still don't have preemption or API for context priority merged, so
we probably should hold on with this one?

-Michał