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Date: Tue, 25 May 2021 12:51:12 +0300
From: Adrian Hunter <adrian.hunter@...el.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Jiri Olsa <jolsa@...hat.com>, Andi Kleen <ak@...ux.intel.com>
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 10/10] perf scripts python: intel-pt-events.py: Add branches to script
As an example, add branch information to intel-pt-events.py script.
This shows how a simple python script can be used to customize
perf script output for Intel PT branch traces or power event traces.
Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
.../scripts/python/bin/intel-pt-events-record | 4 +-
.../scripts/python/bin/intel-pt-events-report | 4 +-
tools/perf/scripts/python/intel-pt-events.py | 143 ++++++++++++++----
3 files changed, 116 insertions(+), 35 deletions(-)
diff --git a/tools/perf/scripts/python/bin/intel-pt-events-record b/tools/perf/scripts/python/bin/intel-pt-events-record
index 10fe2b6977d4..6b9877cfe23e 100644
--- a/tools/perf/scripts/python/bin/intel-pt-events-record
+++ b/tools/perf/scripts/python/bin/intel-pt-events-record
@@ -1,8 +1,8 @@
#!/bin/bash
#
-# print Intel PT Power Events and PTWRITE. The intel_pt PMU event needs
-# to be specified with appropriate config terms.
+# print Intel PT Events including Power Events and PTWRITE. The intel_pt PMU
+# event needs to be specified with appropriate config terms.
#
if ! echo "$@" | grep -q intel_pt ; then
echo "Options must include the Intel PT event e.g. -e intel_pt/pwr_evt,ptw/"
diff --git a/tools/perf/scripts/python/bin/intel-pt-events-report b/tools/perf/scripts/python/bin/intel-pt-events-report
index 9a9c92fcd026..beeac3fde9db 100644
--- a/tools/perf/scripts/python/bin/intel-pt-events-report
+++ b/tools/perf/scripts/python/bin/intel-pt-events-report
@@ -1,3 +1,3 @@
#!/bin/bash
-# description: print Intel PT Power Events and PTWRITE
-perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/intel-pt-events.py
\ No newline at end of file
+# description: print Intel PT Events including Power Events and PTWRITE
+perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/intel-pt-events.py
diff --git a/tools/perf/scripts/python/intel-pt-events.py b/tools/perf/scripts/python/intel-pt-events.py
index a73847c8f548..fcfae1de731b 100644
--- a/tools/perf/scripts/python/intel-pt-events.py
+++ b/tools/perf/scripts/python/intel-pt-events.py
@@ -1,5 +1,6 @@
-# intel-pt-events.py: Print Intel PT Power Events and PTWRITE
-# Copyright (c) 2017, Intel Corporation.
+# 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,
@@ -23,8 +24,36 @@ sys.path.append(os.environ['PERF_EXEC_PATH'] + \
#from perf_trace_context import *
#from Core import *
+try:
+ broken_pipe_exception = BrokenPipeError
+except:
+ broken_pipe_exception = IOError
+
+glb_switch_str = None
+glb_switch_printed = True
+
+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(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():
- print("Intel PT Power Events and PTWRITE")
+ print("Intel PT Branch Trace, Power Events and PTWRITE")
def trace_end():
print("End")
@@ -77,58 +106,110 @@ def print_pwrx(raw_buf):
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 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),
+ 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("%16s %5u/%-5u [%03u] %9u.%09u %7s %19s" %
+ (comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name, flags_disp),
end=' ')
-def print_common_ip(sample, symbol, dso):
- ip = sample["ip"]
- print("%16x %s (%s)" % (ip, symbol, dso))
+def print_common_ip(param_dict, sample, symbol, dso):
+ ip = sample["ip"]
+ offs = get_offset(param_dict, "symoff")
+ 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)" % (addr, symbol, offs, dso))
+ else:
+ print()
-def process_event(param_dict):
+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"]
+ 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
- if "dso" in param_dict:
- dso = param_dict["dso"]
- else:
- dso = "[unknown]"
+ dso = get_optional(param_dict, "dso")
+ symbol = get_optional(param_dict, "symbol")
- if "symbol" in param_dict:
- symbol = param_dict["symbol"]
- else:
- symbol = "[unknown]"
+ print_common_start(comm, sample, name)
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)
+ elif name == "psb":
+ print_psb(raw_buf)
+
+ 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
--
2.17.1
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