# 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. from __future__ import print_function import osimport sysimport 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), end=' ') 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), end=' ') 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), end=' ') 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),		end=' ') def print_exstop(raw_buf):	data = struct.unpack_from("<I", raw_buf)	flags = data[0]	exact_ip = flags & 1	print("IP: %u" % (exact_ip), end=' ') 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), end=' ') 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),		end=' ') 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 "dso" in param_dict:		dso = param_dict["dso"]	else:		dso = "[unknown]" 	if "symbol" in param_dict:		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)