[Intel-gfx] [PATCH] drm/i915/selftests: Apply cond_resched() liberally to igt_ggtt_page()

[Chris Wilson]

Quoting Chris Wilson (2018-01-05 17:39:04)
> Still occasionally hitting timeouts on bxt with igt_ggtt_page(), so
> include some cond_resched() to keep the nmi watchdog appeased.

On my bxt with kasan+lockdep, igt_ggtt_page() takes 0.3s. And on cases
where CI passes, igt_ggtt_page() takes 0.1s. It's not a lack of
cond_resched() causing the timeouts.
-Chris