CONFIG_OPROFILE_MPCORE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

CONFIG_OPROFILE_MPCORE (not configurable)

configname: CONFIG_OPROFILE_MPCORE

Linux Kernel Configuration
└─>OPROFILE_MPCORE
In linux kernel since version 2.6.21 (release Date: 2007-04-25)