diff options
Diffstat (limited to 'tools/perf/scripts/python/intel-pt-events.py')
| -rw-r--r-- | tools/perf/scripts/python/intel-pt-events.py | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/tools/perf/scripts/python/intel-pt-events.py b/tools/perf/scripts/python/intel-pt-events.py new file mode 100644 index 000000000..a73847c8f --- /dev/null +++ b/tools/perf/scripts/python/intel-pt-events.py @@ -0,0 +1,134 @@ +# 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 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), 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) |