DRM_I915_GEM_SET_TILING 334 include/uapi/drm/i915_drm.h #define DRM_I915_GEM_SET_TILING 0x21 DRM_I915_GEM_SET_TILING 334 tools/include/uapi/drm/i915_drm.h #define DRM_I915_GEM_SET_TILING 0x21