[Intel-gfx] [PATCH] drm/i915/selftests: Disable preemption while setting up fence-timers

[Chris Wilson]

Quoting Tvrtko Ursulin (2019-03-14 11:37:19)
> 
> On 13/03/2019 20:59, Chris Wilson wrote:
> > The impossible happens and a future fence expired while we were still
> > initialising. The probable cause is that the test was preempted and we
> > lost our scheduler cpu slice. Disable preemption during this test to
> > rule out preemption as a source of timer disruption.
> > 
> > References: https://bugs.freedesktop.org/show_bug.cgi?id=110039
> > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
[snip]
> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Pushed, closed bug and hope it never happens again.
-Chris