 Shares of Papa Johns International Inc. PZZA, 2.06 edged up 0.2 in premarket trading Thursday, after the pizza seller reported second-quarter profit and revenue that came up short of expectations, amid acceleration in commodity costs and labor inflation, and weakness overseas, while North America same-store sales rose more than forecast and the company boosted its dividend by 20. The company swung to net income of 25.4 million, or 70 cents a share, from a loss of 32.3 million, or 2.30 a share, in the year-ago period. 