356 lines
11 KiB
Python
356 lines
11 KiB
Python
# SPDX-License-Identifier: GPL-2.0
|
|
# intel-pt-events.py: Print Intel PT Events including Power Events and PTWRITE
|
|
# Copyright (c) 2017-2021, 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
|
|
import argparse
|
|
|
|
from libxed import LibXED
|
|
from ctypes import create_string_buffer, addressof
|
|
|
|
sys.path.append(os.environ['PERF_EXEC_PATH'] + \
|
|
'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
|
|
|
|
from perf_trace_context import perf_set_itrace_options, \
|
|
perf_sample_insn, perf_sample_srccode
|
|
|
|
try:
|
|
broken_pipe_exception = BrokenPipeError
|
|
except:
|
|
broken_pipe_exception = IOError
|
|
|
|
glb_switch_str = None
|
|
glb_switch_printed = True
|
|
glb_insn = False
|
|
glb_disassembler = None
|
|
glb_src = False
|
|
glb_source_file_name = None
|
|
glb_line_number = None
|
|
glb_dso = None
|
|
|
|
def get_optional_null(perf_dict, field):
|
|
if field in perf_dict:
|
|
return perf_dict[field]
|
|
return ""
|
|
|
|
def get_optional_zero(perf_dict, field):
|
|
if field in perf_dict:
|
|
return perf_dict[field]
|
|
return 0
|
|
|
|
def get_optional_bytes(perf_dict, field):
|
|
if field in perf_dict:
|
|
return perf_dict[field]
|
|
return bytes()
|
|
|
|
def get_optional(perf_dict, field):
|
|
if field in perf_dict:
|
|
return perf_dict[field]
|
|
return "[unknown]"
|
|
|
|
def get_offset(perf_dict, field):
|
|
if field in perf_dict:
|
|
return "+%#x" % perf_dict[field]
|
|
return ""
|
|
|
|
def trace_begin():
|
|
ap = argparse.ArgumentParser(usage = "", add_help = False)
|
|
ap.add_argument("--insn-trace", action='store_true')
|
|
ap.add_argument("--src-trace", action='store_true')
|
|
global glb_args
|
|
global glb_insn
|
|
global glb_src
|
|
glb_args = ap.parse_args()
|
|
if glb_args.insn_trace:
|
|
print("Intel PT Instruction Trace")
|
|
itrace = "i0nsepwx"
|
|
glb_insn = True
|
|
elif glb_args.src_trace:
|
|
print("Intel PT Source Trace")
|
|
itrace = "i0nsepwx"
|
|
glb_insn = True
|
|
glb_src = True
|
|
else:
|
|
print("Intel PT Branch Trace, Power Events and PTWRITE")
|
|
itrace = "bepwx"
|
|
global glb_disassembler
|
|
try:
|
|
glb_disassembler = LibXED()
|
|
except:
|
|
glb_disassembler = None
|
|
perf_set_itrace_options(perf_script_context, itrace)
|
|
|
|
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_psb(raw_buf):
|
|
data = struct.unpack_from("<IQ", raw_buf)
|
|
offset = data[1]
|
|
print("offset: %#x" % (offset), end=' ')
|
|
|
|
def common_start_str(comm, sample):
|
|
ts = sample["time"]
|
|
cpu = sample["cpu"]
|
|
pid = sample["pid"]
|
|
tid = sample["tid"]
|
|
return "%16s %5u/%-5u [%03u] %9u.%09u " % (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000)
|
|
|
|
def print_common_start(comm, sample, name):
|
|
flags_disp = get_optional_null(sample, "flags_disp")
|
|
# Unused fields:
|
|
# period = sample["period"]
|
|
# phys_addr = sample["phys_addr"]
|
|
# weight = sample["weight"]
|
|
# transaction = sample["transaction"]
|
|
# cpumode = get_optional_zero(sample, "cpumode")
|
|
print(common_start_str(comm, sample) + "%7s %19s" % (name, flags_disp), end=' ')
|
|
|
|
def print_instructions_start(comm, sample):
|
|
if "x" in get_optional_null(sample, "flags"):
|
|
print(common_start_str(comm, sample) + "x", end=' ')
|
|
else:
|
|
print(common_start_str(comm, sample), end=' ')
|
|
|
|
def disassem(insn, ip):
|
|
inst = glb_disassembler.Instruction()
|
|
glb_disassembler.SetMode(inst, 0) # Assume 64-bit
|
|
buf = create_string_buffer(64)
|
|
buf.value = insn
|
|
return glb_disassembler.DisassembleOne(inst, addressof(buf), len(insn), ip)
|
|
|
|
def print_common_ip(param_dict, sample, symbol, dso):
|
|
ip = sample["ip"]
|
|
offs = get_offset(param_dict, "symoff")
|
|
if "cyc_cnt" in sample:
|
|
cyc_cnt = sample["cyc_cnt"]
|
|
insn_cnt = get_optional_zero(sample, "insn_cnt")
|
|
ipc_str = " IPC: %#.2f (%u/%u)" % (insn_cnt / cyc_cnt, insn_cnt, cyc_cnt)
|
|
else:
|
|
ipc_str = ""
|
|
if glb_insn and glb_disassembler is not None:
|
|
insn = perf_sample_insn(perf_script_context)
|
|
if insn and len(insn):
|
|
cnt, text = disassem(insn, ip)
|
|
byte_str = ("%x" % ip).rjust(16)
|
|
if sys.version_info.major >= 3:
|
|
for k in range(cnt):
|
|
byte_str += " %02x" % insn[k]
|
|
else:
|
|
for k in xrange(cnt):
|
|
byte_str += " %02x" % ord(insn[k])
|
|
print("%-40s %-30s" % (byte_str, text), end=' ')
|
|
print("%s%s (%s)" % (symbol, offs, dso), end=' ')
|
|
else:
|
|
print("%16x %s%s (%s)" % (ip, symbol, offs, dso), end=' ')
|
|
if "addr_correlates_sym" in sample:
|
|
addr = sample["addr"]
|
|
dso = get_optional(sample, "addr_dso")
|
|
symbol = get_optional(sample, "addr_symbol")
|
|
offs = get_offset(sample, "addr_symoff")
|
|
print("=> %x %s%s (%s)%s" % (addr, symbol, offs, dso, ipc_str))
|
|
else:
|
|
print(ipc_str)
|
|
|
|
def print_srccode(comm, param_dict, sample, symbol, dso, with_insn):
|
|
ip = sample["ip"]
|
|
if symbol == "[unknown]":
|
|
start_str = common_start_str(comm, sample) + ("%x" % ip).rjust(16).ljust(40)
|
|
else:
|
|
offs = get_offset(param_dict, "symoff")
|
|
start_str = common_start_str(comm, sample) + (symbol + offs).ljust(40)
|
|
|
|
if with_insn and glb_insn and glb_disassembler is not None:
|
|
insn = perf_sample_insn(perf_script_context)
|
|
if insn and len(insn):
|
|
cnt, text = disassem(insn, ip)
|
|
start_str += text.ljust(30)
|
|
|
|
global glb_source_file_name
|
|
global glb_line_number
|
|
global glb_dso
|
|
|
|
source_file_name, line_number, source_line = perf_sample_srccode(perf_script_context)
|
|
if source_file_name:
|
|
if glb_line_number == line_number and glb_source_file_name == source_file_name:
|
|
src_str = ""
|
|
else:
|
|
if len(source_file_name) > 40:
|
|
src_file = ("..." + source_file_name[-37:]) + " "
|
|
else:
|
|
src_file = source_file_name.ljust(41)
|
|
if source_line is None:
|
|
src_str = src_file + str(line_number).rjust(4) + " <source not found>"
|
|
else:
|
|
src_str = src_file + str(line_number).rjust(4) + " " + source_line
|
|
glb_dso = None
|
|
elif dso == glb_dso:
|
|
src_str = ""
|
|
else:
|
|
src_str = dso
|
|
glb_dso = dso
|
|
|
|
glb_line_number = line_number
|
|
glb_source_file_name = source_file_name
|
|
|
|
print(start_str, src_str)
|
|
|
|
def do_process_event(param_dict):
|
|
global glb_switch_printed
|
|
if not glb_switch_printed:
|
|
print(glb_switch_str)
|
|
glb_switch_printed = True
|
|
event_attr = param_dict["attr"]
|
|
sample = param_dict["sample"]
|
|
raw_buf = param_dict["raw_buf"]
|
|
comm = param_dict["comm"]
|
|
name = param_dict["ev_name"]
|
|
# Unused fields:
|
|
# callchain = param_dict["callchain"]
|
|
# brstack = param_dict["brstack"]
|
|
# brstacksym = param_dict["brstacksym"]
|
|
|
|
# Symbol and dso info are not always resolved
|
|
dso = get_optional(param_dict, "dso")
|
|
symbol = get_optional(param_dict, "symbol")
|
|
|
|
if name[0:12] == "instructions":
|
|
if glb_src:
|
|
print_srccode(comm, param_dict, sample, symbol, dso, True)
|
|
else:
|
|
print_instructions_start(comm, sample)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name[0:8] == "branches":
|
|
if glb_src:
|
|
print_srccode(comm, param_dict, sample, symbol, dso, False)
|
|
else:
|
|
print_common_start(comm, sample, name)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "ptwrite":
|
|
print_common_start(comm, sample, name)
|
|
print_ptwrite(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "cbr":
|
|
print_common_start(comm, sample, name)
|
|
print_cbr(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "mwait":
|
|
print_common_start(comm, sample, name)
|
|
print_mwait(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "pwre":
|
|
print_common_start(comm, sample, name)
|
|
print_pwre(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "exstop":
|
|
print_common_start(comm, sample, name)
|
|
print_exstop(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "pwrx":
|
|
print_common_start(comm, sample, name)
|
|
print_pwrx(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
elif name == "psb":
|
|
print_common_start(comm, sample, name)
|
|
print_psb(raw_buf)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
else:
|
|
print_common_start(comm, sample, name)
|
|
print_common_ip(param_dict, sample, symbol, dso)
|
|
|
|
def process_event(param_dict):
|
|
try:
|
|
do_process_event(param_dict)
|
|
except broken_pipe_exception:
|
|
# Stop python printing broken pipe errors and traceback
|
|
sys.stdout = open(os.devnull, 'w')
|
|
sys.exit(1)
|
|
|
|
def auxtrace_error(typ, code, cpu, pid, tid, ip, ts, msg, cpumode, *x):
|
|
try:
|
|
print("%16s %5u/%-5u [%03u] %9u.%09u error type %u code %u: %s ip 0x%16x" %
|
|
("Trace error", pid, tid, cpu, ts / 1000000000, ts %1000000000, typ, code, msg, ip))
|
|
except broken_pipe_exception:
|
|
# Stop python printing broken pipe errors and traceback
|
|
sys.stdout = open(os.devnull, 'w')
|
|
sys.exit(1)
|
|
|
|
def context_switch(ts, cpu, pid, tid, np_pid, np_tid, machine_pid, out, out_preempt, *x):
|
|
global glb_switch_printed
|
|
global glb_switch_str
|
|
if out:
|
|
out_str = "Switch out "
|
|
else:
|
|
out_str = "Switch In "
|
|
if out_preempt:
|
|
preempt_str = "preempt"
|
|
else:
|
|
preempt_str = ""
|
|
if machine_pid == -1:
|
|
machine_str = ""
|
|
else:
|
|
machine_str = "machine PID %d" % machine_pid
|
|
glb_switch_str = "%16s %5d/%-5d [%03u] %9u.%09u %5d/%-5d %s %s" % \
|
|
(out_str, pid, tid, cpu, ts / 1000000000, ts %1000000000, np_pid, np_tid, machine_str, preempt_str)
|
|
glb_switch_printed = False
|