I was reminded on Monday that we'd like to be able to subclass struct drm_device so we don't have to always juggle between a pointer to a struct drm_device and its drv_private field to access everything we care about. It'd be nicer for those two pointers to have the same value to avoid a few extra instructions pretty everywhere. Turns out, there's a cheap way to go towards that goal, just make DRM core allocate enough space for drivers that want to subclass struct drm_device and have a transition path where dev_private points to the start of the structure. I've converted i915 to do just that, seems to still boot. Of course, a number of nice refactoring are possible once dev == dev_priv, but that'd be for follow up patches on top. Thoughts? -- Damien _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
