1# intel-pt-events.py: Print Intel PT Power Events and PTWRITE
  2# Copyright (c) 2017, Intel Corporation.
  3#
  4# This program is free software; you can redistribute it and/or modify it
  5# under the terms and conditions of the GNU General Public License,
  6# version 2, as published by the Free Software Foundation.
  7#
  8# This program is distributed in the hope it will be useful, but WITHOUT
  9# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 10# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 11# more details.
 12
 13import os
 14import sys
 15import struct
 16
 17sys.path.append(os.environ['PERF_EXEC_PATH'] + \
 18	'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
 19
 20# These perf imports are not used at present
 21#from perf_trace_context import *
 22#from Core import *
 23
 24def trace_begin():
 25	print "Intel PT Power Events and PTWRITE"
 26
 27def trace_end():
 28	print "End"
 29
 30def trace_unhandled(event_name, context, event_fields_dict):
 31		print ' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())])
 32
 33def print_ptwrite(raw_buf):
 34	data = struct.unpack_from("<IQ", raw_buf)
 35	flags = data[0]
 36	payload = data[1]
 37	exact_ip = flags & 1
 38	print "IP: %u payload: %#x" % (exact_ip, payload),
 39
 40def print_cbr(raw_buf):
 41	data = struct.unpack_from("<BBBBII", raw_buf)
 42	cbr = data[0]
 43	f = (data[4] + 500) / 1000
 44	p = ((cbr * 1000 / data[2]) + 5) / 10
 45	print "%3u  freq: %4u MHz  (%3u%%)" % (cbr, f, p),
 46
 47def print_mwait(raw_buf):
 48	data = struct.unpack_from("<IQ", raw_buf)
 49	payload = data[1]
 50	hints = payload & 0xff
 51	extensions = (payload >> 32) & 0x3
 52	print "hints: %#x extensions: %#x" % (hints, extensions),
 53
 54def print_pwre(raw_buf):
 55	data = struct.unpack_from("<IQ", raw_buf)
 56	payload = data[1]
 57	hw = (payload >> 7) & 1
 58	cstate = (payload >> 12) & 0xf
 59	subcstate = (payload >> 8) & 0xf
 60	print "hw: %u cstate: %u sub-cstate: %u" % (hw, cstate, subcstate),
 61
 62def print_exstop(raw_buf):
 63	data = struct.unpack_from("<I", raw_buf)
 64	flags = data[0]
 65	exact_ip = flags & 1
 66	print "IP: %u" % (exact_ip),
 67
 68def print_pwrx(raw_buf):
 69	data = struct.unpack_from("<IQ", raw_buf)
 70	payload = data[1]
 71	deepest_cstate = payload & 0xf
 72	last_cstate = (payload >> 4) & 0xf
 73	wake_reason = (payload >> 8) & 0xf
 74	print "deepest cstate: %u last cstate: %u wake reason: %#x" % (deepest_cstate, last_cstate, wake_reason),
 75
 76def print_common_start(comm, sample, name):
 77	ts = sample["time"]
 78	cpu = sample["cpu"]
 79	pid = sample["pid"]
 80	tid = sample["tid"]
 81	print "%16s %5u/%-5u [%03u] %9u.%09u %7s:" % (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name),
 82
 83def print_common_ip(sample, symbol, dso):
 84	ip = sample["ip"]
 85	print "%16x %s (%s)" % (ip, symbol, dso)
 86
 87def process_event(param_dict):
 88        event_attr = param_dict["attr"]
 89        sample     = param_dict["sample"]
 90        raw_buf    = param_dict["raw_buf"]
 91        comm       = param_dict["comm"]
 92        name       = param_dict["ev_name"]
 93
 94        # Symbol and dso info are not always resolved
 95        if (param_dict.has_key("dso")):
 96                dso = param_dict["dso"]
 97        else:
 98                dso = "[unknown]"
 99
100        if (param_dict.has_key("symbol")):
101                symbol = param_dict["symbol"]
102        else:
103                symbol = "[unknown]"
104
105	if name == "ptwrite":
106		print_common_start(comm, sample, name)
107		print_ptwrite(raw_buf)
108		print_common_ip(sample, symbol, dso)
109	elif name == "cbr":
110		print_common_start(comm, sample, name)
111		print_cbr(raw_buf)
112		print_common_ip(sample, symbol, dso)
113	elif name == "mwait":
114		print_common_start(comm, sample, name)
115		print_mwait(raw_buf)
116		print_common_ip(sample, symbol, dso)
117	elif name == "pwre":
118		print_common_start(comm, sample, name)
119		print_pwre(raw_buf)
120		print_common_ip(sample, symbol, dso)
121	elif name == "exstop":
122		print_common_start(comm, sample, name)
123		print_exstop(raw_buf)
124		print_common_ip(sample, symbol, dso)
125	elif name == "pwrx":
126		print_common_start(comm, sample, name)
127		print_pwrx(raw_buf)
128		print_common_ip(sample, symbol, dso)