• Chris Wilson's avatar
    drm/i915: Clarify the semantics of tiling_changed · 5d82e3e6
    Chris Wilson authored
    
    
    Rename obj->tiling_changed to obj->fence_dirty so that it is clear that
    it flags when the parameters for an active fence (including the
    no-fence) register are changed.
    
    Also, do not set this flag when the object does not have a fence
    register allocated currently and the gpu does not depend upon the
    unfence. This case works exactly like when a tiled object lost its
    fence and hence does not need additional handling for the tiling
    change in the code.
    
    v2: Use fence_dirty to better express what the flag tracks and add a few
    more details to the comments to serve as a reminder of how the GPU also
    uses the unfenced register slot.
    Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
    [danvet: Add some bikeshed to the commit message about the stricter
    use of fence_dirty.]
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    5d82e3e6