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There are a variety of paths that apps take (this is by no means a
complete enumeration, I tried to keep going until I saw repeats but
eventually ran out of steam), and it should be useful to driver developers
writing their pipe_transfer_map() and invalidate_resource() calls to see a
bunch of the patterns without having to do performance debug on each app.
Acked-by: Rob Clark <robdclark@chromium.org>
Part-of: <!9231>