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11c9b6c628
So I think I've spotted a small gap in the frontbuffer tracking while discussing the logic with Paulo on irc: 1. Userspace schedules gpu rendering to the current frontbuffer. This gets tracked in dev_priv->fb_tracking.busy_bits. 2. We pageflip a fully rendered buffer before the frontbuffer rendering completes. 3. The request retiring will never clear busy_bits (since at retire time the old frontbuffer won't have obj->frontbuffer_bits set), so these bits now are stuck until someone again does a bit of frontbuffer tracking. If we clear stale busy_bits in flip_prepare this gap is closed. Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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