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# intel-pt-events.py: Print Intel PT Power Events and PTWRITE
# Copyright (c) 2017, Intel Corporation.
#
# This program is free software; you can redistribute it and/or modify it
# under the terms and conditions of the GNU General Public License,
# version 2, as published by the Free Software Foundation.
#
# This program is distributed in the hope it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
import os
import sys
import struct
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
# These perf imports are not used at present
#from perf_trace_context import *
#from Core import *
def trace_begin():
print "Intel PT Power Events and PTWRITE"
def trace_end():
print "End"
def trace_unhandled(event_name, context, event_fields_dict):
print ' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())])
def print_ptwrite(raw_buf):
data = struct.unpack_from("<IQ", raw_buf)
flags = data[0]
payload = data[1]
exact_ip = flags & 1
print "IP: %u payload: %#x" % (exact_ip, payload),
def print_cbr(raw_buf):
data = struct.unpack_from("<BBBBII", raw_buf)
cbr = data[0]
f = (data[4] + 500) / 1000
p = ((cbr * 1000 / data[2]) + 5) / 10
print "%3u freq: %4u MHz (%3u%%)" % (cbr, f, p),
def print_mwait(raw_buf):
data = struct.unpack_from("<IQ", raw_buf)
payload = data[1]
hints = payload & 0xff
extensions = (payload >> 32) & 0x3
print "hints: %#x extensions: %#x" % (hints, extensions),
def print_pwre(raw_buf):
data = struct.unpack_from("<IQ", raw_buf)
payload = data[1]
hw = (payload >> 7) & 1
cstate = (payload >> 12) & 0xf
subcstate = (payload >> 8) & 0xf
print "hw: %u cstate: %u sub-cstate: %u" % (hw, cstate, subcstate),
def print_exstop(raw_buf):
data = struct.unpack_from("<I", raw_buf)
flags = data[0]
exact_ip = flags & 1
print "IP: %u" % (exact_ip),
def print_pwrx(raw_buf):
data = struct.unpack_from("<IQ", raw_buf)
payload = data[1]
deepest_cstate = payload & 0xf
last_cstate = (payload >> 4) & 0xf
wake_reason = (payload >> 8) & 0xf
print "deepest cstate: %u last cstate: %u wake reason: %#x" % (deepest_cstate, last_cstate, wake_reason),
def print_common_start(comm, sample, name):
ts = sample["time"]
cpu = sample["cpu"]
pid = sample["pid"]
tid = sample["tid"]
print "%16s %5u/%-5u [%03u] %9u.%09u %7s:" % (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name),
def print_common_ip(sample, symbol, dso):
ip = sample["ip"]
print "%16x %s (%s)" % (ip, symbol, dso)
def process_event(param_dict):
event_attr = param_dict["attr"]
sample = param_dict["sample"]
raw_buf = param_dict["raw_buf"]
comm = param_dict["comm"]
name = param_dict["ev_name"]
# Symbol and dso info are not always resolved
if (param_dict.has_key("dso")):
dso = param_dict["dso"]
else:
dso = "[unknown]"
if (param_dict.has_key("symbol")):
symbol = param_dict["symbol"]
else:
symbol = "[unknown]"
if name == "ptwrite":
print_common_start(comm, sample, name)
print_ptwrite(raw_buf)
print_common_ip(sample, symbol, dso)
elif name == "cbr":
print_common_start(comm, sample, name)
print_cbr(raw_buf)
print_common_ip(sample, symbol, dso)
elif name == "mwait":
print_common_start(comm, sample, name)
print_mwait(raw_buf)
print_common_ip(sample, symbol, dso)
elif name == "pwre":
print_common_start(comm, sample, name)
print_pwre(raw_buf)
print_common_ip(sample, symbol, dso)
elif name == "exstop":
print_common_start(comm, sample, name)
print_exstop(raw_buf)
print_common_ip(sample, symbol, dso)
elif name == "pwrx":
print_common_start(comm, sample, name)
print_pwrx(raw_buf)
print_common_ip(sample, symbol, dso)
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