Preheat oven to 350º. In a large bowl, cream butter and both sugars. Add eggs, vanilla, and cinnamon. Mix thoroughly.
In a separate bowl, combine baking soda, salt, and flour. Stir into the sugar mixture.
Add oatmeal and chips. Stir until well blended.
Drop by teaspoonfuls onto cookie sheets lined with parchment paper.
Bake for ten minutes.