In a small bowl, combine the first eight ingredients. Transfer to a small spice jar. Store in a cool, dry place for up to 2 months. Yield: 3 batches (3 tablespoons total).
To prepare pork tenderloin: Brush pork with oil; rub with 1 tablespoon seasoning mix. Cover and refrigerate at least 2 hours or overnight.
Prepare grill for indirect heat. Grill pork, covered, over indirect medium-hot heat for 25-30 minutes or until a thermometer reads 160°. Let stand for 5 minutes before slicing.