DRM_I915_PERF_OPEN 356 include/uapi/drm/i915_drm.h #define DRM_I915_PERF_OPEN 0x36 DRM_I915_PERF_OPEN 356 tools/include/uapi/drm/i915_drm.h #define DRM_I915_PERF_OPEN 0x36