+ Performance library instance used in PEI phase.\r
+\r
+ This file implements all APIs in Performance Library class in MdePkg. It creates\r
+ performance logging GUIDed HOB on the first performance logging and then logs the\r
+ performance data to the GUIDed HOB. Due to the limitation of temporary RAM, the maximum\r
+ number of performance logging entry is specified by PcdMaxPeiPerformanceLogEntries. \r