And I think TumTum has a point here, but he's dancing all around it. In general, Australia didn't use enough slower balls, bowled three lengths for too long (fair enough to focus on it at the start, but once it wasn't working then they had to go back to bowling line and length) and should have brought up certain fielders to get Malinga to slog, but then bowled at those lengths consistently.
For example, bringing up the deep cover (square of the cover inside of the circle), and asked him to hit inside out, off a short of a length delivery or maybe slightly fuller. And then maintain it, with the odd slower ball if he does want to slog it. Or maintain the same plan with either long-on or long-off inside the circle, give him an area where there are singles and make him hit to a certain area for boundaries.