tools/perf/pmu-events/arch/x86/haswell/uncore-other.json

[
    {
        "BriefDescription": "This 48-bit fixed counter counts the UCLK cycles.",
        "EventCode": "0xff",
        "EventName": "UNC_CLOCK.SOCKET",
        "PerPkg": "1",
        "Unit": "CLOCK"
    }
]