[Intel-gfx] [PATCH v5] drm/i915: Engine discovery query

[Chris Wilson]

Quoting Tvrtko Ursulin (2018-10-03 10:58:55)
> +static int
> +query_engine_info(struct drm_i915_private *i915,
> +                 struct drm_i915_query_item *query_item)
> +{
> +       for_each_engine(engine, i915, id) {
> +               struct drm_i915_engine_info info;
> +
> +               if (__copy_from_user(&info, info_ptr, sizeof(info)))
> +                       return -EFAULT;
> +
> +               if (memcmp(&info, &zero_info, sizeof(info)))
> +                       return -EINVAL;

You want to have this be an in/out?
-Chris