Corrected performanceInfo documentation

 */

struct PerformanceInfo {

    /**

     * Execution time in nanoseconds.

     * Ratio of the time taken by the driver to execute the

     * workload compared to the time the CPU would take for the

     * same workload. A lower number is better.

     */

    float execTime;

    /**

     * Power usage in picoJoules.

     * Ratio of the energy used by the driver compared to what

     * the CPU would use for doing the same workload. A lower number

     * is better.

     */

    float powerUsage;

};