The fact that you are trying to profile Text::CSV implies that you are looking for more speed. The first thing to do is use Text::CSV_XS instead.

As others already said, Devel::DProf is dead and gone, use Devel::NYTProf instead. Much better and gives you much more usable data.

Last, Text::CSV is just a wrapper module. If you want to profile, profile the backend: Text::CSV_PP or Text::CSV_XS.