print-pebs

#!/usr/bin/python

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# print-pebs file.json
# print all pebs events from a json event file in perf format

import sys, json

msrs = {
    "0x1A6": "offcore_rsp",
    "0x3F6": "ldlat",
    #"0x3F7": "frontend",
}

for n in sys.argv[1:]:
    jf = json.load(open(n, "r"))
    for j in jf:
        if int(j["PEBS"]) == 0:
            continue
        out = "cpu/event=%s,umask=%s" % (j["EventCode"], j["UMask"])
        if j["MSRIndex"] in msrs:
            out += "," + msrs[j["MSRIndex"]] + "=" + j["MSRValue"]
        if j["MSRIndex"] == "0x3F7":
            v = int(j["MSRValue"], 16)
            out += ",frontend=%#x" % v
        out += "/pp"
        print "%-40s %s" % (j["EventName"], out)