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