Enable additional driver debugging for GuC

configname: CONFIG_DRM_I915_DEBUG_GUC

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>drm/i915 Debugging
└─>Enable additional driver debugging for GuC
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Choose this option to turn on extra driver debugging that may affect
performance but will help resolve GuC related issues.

Recommended for driver developers only.

If in doubt, say "N".

depends
CONFIG_DRM_I915
CONFIG_EXPERT
CONFIG_HAS_IOMEM