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 13from __future__ import print_function 14 15import os 16import sys 17import struct 18 19sys.path.append(os.environ['PERF_EXEC_PATH'] + \ 20 '/scripts/python/Perf-Trace-Util/lib/Perf/Trace') 21 22# These perf imports are not used at present 23#from perf_trace_context import * 24#from Core import * 25 26def trace_begin(): 27 print("Intel PT Power Events and PTWRITE") 28 29def trace_end(): 30 print("End") 31 32def trace_unhandled(event_name, context, event_fields_dict): 33 print(' '.join(['%s=%s'%(k,str(v))for k,v in sorted(event_fields_dict.items())])) 34 35def print_ptwrite(raw_buf): 36 data = struct.unpack_from("<IQ", raw_buf) 37 flags = data[0] 38 payload = data[1] 39 exact_ip = flags & 1 40 print("IP: %u payload: %#x" % (exact_ip, payload), end=' ') 41 42def print_cbr(raw_buf): 43 data = struct.unpack_from("<BBBBII", raw_buf) 44 cbr = data[0] 45 f = (data[4] + 500) / 1000 46 p = ((cbr * 1000 / data[2]) + 5) / 10 47 print("%3u freq: %4u MHz (%3u%%)" % (cbr, f, p), end=' ') 48 49def print_mwait(raw_buf): 50 data = struct.unpack_from("<IQ", raw_buf) 51 payload = data[1] 52 hints = payload & 0xff 53 extensions = (payload >> 32) & 0x3 54 print("hints: %#x extensions: %#x" % (hints, extensions), end=' ') 55 56def print_pwre(raw_buf): 57 data = struct.unpack_from("<IQ", raw_buf) 58 payload = data[1] 59 hw = (payload >> 7) & 1 60 cstate = (payload >> 12) & 0xf 61 subcstate = (payload >> 8) & 0xf 62 print("hw: %u cstate: %u sub-cstate: %u" % (hw, cstate, subcstate), 63 end=' ') 64 65def print_exstop(raw_buf): 66 data = struct.unpack_from("<I", raw_buf) 67 flags = data[0] 68 exact_ip = flags & 1 69 print("IP: %u" % (exact_ip), end=' ') 70 71def print_pwrx(raw_buf): 72 data = struct.unpack_from("<IQ", raw_buf) 73 payload = data[1] 74 deepest_cstate = payload & 0xf 75 last_cstate = (payload >> 4) & 0xf 76 wake_reason = (payload >> 8) & 0xf 77 print("deepest cstate: %u last cstate: %u wake reason: %#x" % 78 (deepest_cstate, last_cstate, wake_reason), end=' ') 79 80def print_common_start(comm, sample, name): 81 ts = sample["time"] 82 cpu = sample["cpu"] 83 pid = sample["pid"] 84 tid = sample["tid"] 85 print("%16s %5u/%-5u [%03u] %9u.%09u %7s:" % 86 (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name), 87 end=' ') 88 89def print_common_ip(sample, symbol, dso): 90 ip = sample["ip"] 91 print("%16x %s (%s)" % (ip, symbol, dso)) 92 93def process_event(param_dict): 94 event_attr = param_dict["attr"] 95 sample = param_dict["sample"] 96 raw_buf = param_dict["raw_buf"] 97 comm = param_dict["comm"] 98 name = param_dict["ev_name"] 99 100 # Symbol and dso info are not always resolved 101 if "dso" in param_dict: 102 dso = param_dict["dso"] 103 else: 104 dso = "[unknown]" 105 106 if "symbol" in param_dict: 107 symbol = param_dict["symbol"] 108 else: 109 symbol = "[unknown]" 110 111 if name == "ptwrite": 112 print_common_start(comm, sample, name) 113 print_ptwrite(raw_buf) 114 print_common_ip(sample, symbol, dso) 115 elif name == "cbr": 116 print_common_start(comm, sample, name) 117 print_cbr(raw_buf) 118 print_common_ip(sample, symbol, dso) 119 elif name == "mwait": 120 print_common_start(comm, sample, name) 121 print_mwait(raw_buf) 122 print_common_ip(sample, symbol, dso) 123 elif name == "pwre": 124 print_common_start(comm, sample, name) 125 print_pwre(raw_buf) 126 print_common_ip(sample, symbol, dso) 127 elif name == "exstop": 128 print_common_start(comm, sample, name) 129 print_exstop(raw_buf) 130 print_common_ip(sample, symbol, dso) 131 elif name == "pwrx": 132 print_common_start(comm, sample, name) 133 print_pwrx(raw_buf) 134 print_common_ip(sample, symbol, dso) 135