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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@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20210525095112.1399-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
Arnaldo Carvalho de Melo
parent
2ede92173f
commit
a92bf335fd
@ -1,8 +1,8 @@
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#!/bin/bash
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#
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# print Intel PT Power Events and PTWRITE. The intel_pt PMU event needs
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# to be specified with appropriate config terms.
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# print Intel PT Events including Power Events and PTWRITE. The intel_pt PMU
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# event needs to be specified with appropriate config terms.
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#
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if ! echo "$@" | grep -q intel_pt ; then
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echo "Options must include the Intel PT event e.g. -e intel_pt/pwr_evt,ptw/"
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@ -1,3 +1,3 @@
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#!/bin/bash
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# description: print Intel PT Power Events and PTWRITE
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perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/intel-pt-events.py
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# description: print Intel PT Events including Power Events and PTWRITE
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perf script $@ -s "$PERF_EXEC_PATH"/scripts/python/intel-pt-events.py
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@ -1,5 +1,6 @@
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# intel-pt-events.py: Print Intel PT Power Events and PTWRITE
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# Copyright (c) 2017, Intel Corporation.
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# SPDX-License-Identifier: GPL-2.0
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# intel-pt-events.py: Print Intel PT Events including Power Events and PTWRITE
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# Copyright (c) 2017-2021, 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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@ -23,8 +24,36 @@ sys.path.append(os.environ['PERF_EXEC_PATH'] + \
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#from perf_trace_context import *
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#from Core import *
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try:
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broken_pipe_exception = BrokenPipeError
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except:
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broken_pipe_exception = IOError
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glb_switch_str = None
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glb_switch_printed = True
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def get_optional_null(perf_dict, field):
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if field in perf_dict:
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return perf_dict[field]
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return ""
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def get_optional_zero(perf_dict, field):
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if field in perf_dict:
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return perf_dict[field]
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return 0
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def get_optional(perf_dict, field):
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if field in perf_dict:
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return perf_dict[field]
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return "[unknown]"
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def get_offset(perf_dict, field):
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if field in perf_dict:
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return "+%#x" % perf_dict[field]
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return ""
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def trace_begin():
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print("Intel PT Power Events and PTWRITE")
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print("Intel PT Branch Trace, Power Events and PTWRITE")
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def trace_end():
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print("End")
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@ -77,58 +106,110 @@ def print_pwrx(raw_buf):
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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_psb(raw_buf):
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data = struct.unpack_from("<IQ", raw_buf)
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offset = data[1]
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print("offset: %#x" % (offset), 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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flags_disp = get_optional_null(sample, "flags_disp")
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# Unused fields:
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# period = sample["period"]
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# phys_addr = sample["phys_addr"]
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# weight = sample["weight"]
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# transaction = sample["transaction"]
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# cpumode = get_optional_zero(sample, "cpumode")
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print("%16s %5u/%-5u [%03u] %9u.%09u %7s %19s" %
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(comm, pid, tid, cpu, ts / 1000000000, ts %1000000000, name, flags_disp),
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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 print_common_ip(param_dict, sample, symbol, dso):
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ip = sample["ip"]
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offs = get_offset(param_dict, "symoff")
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print("%16x %s%s (%s)" % (ip, symbol, offs, dso), end=' ')
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if "addr_correlates_sym" in sample:
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addr = sample["addr"]
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dso = get_optional(sample, "addr_dso")
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symbol = get_optional(sample, "addr_symbol")
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offs = get_offset(sample, "addr_symoff")
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print("=> %x %s%s (%s)" % (addr, symbol, offs, dso))
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else:
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print()
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def process_event(param_dict):
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def do_process_event(param_dict):
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global glb_switch_printed
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if not glb_switch_printed:
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print(glb_switch_str)
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glb_switch_printed = True
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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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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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# Unused fields:
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# callchain = param_dict["callchain"]
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# brstack = param_dict["brstack"]
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# brstacksym = param_dict["brstacksym"]
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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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dso = get_optional(param_dict, "dso")
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symbol = get_optional(param_dict, "symbol")
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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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print_common_start(comm, sample, name)
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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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elif name == "psb":
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print_psb(raw_buf)
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print_common_ip(param_dict, sample, symbol, dso)
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def process_event(param_dict):
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try:
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do_process_event(param_dict)
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except broken_pipe_exception:
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# Stop python printing broken pipe errors and traceback
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sys.stdout = open(os.devnull, 'w')
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sys.exit(1)
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def auxtrace_error(typ, code, cpu, pid, tid, ip, ts, msg, cpumode, *x):
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try:
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print("%16s %5u/%-5u [%03u] %9u.%09u error type %u code %u: %s ip 0x%16x" %
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("Trace error", pid, tid, cpu, ts / 1000000000, ts %1000000000, typ, code, msg, ip))
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except broken_pipe_exception:
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# Stop python printing broken pipe errors and traceback
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sys.stdout = open(os.devnull, 'w')
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sys.exit(1)
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def context_switch(ts, cpu, pid, tid, np_pid, np_tid, machine_pid, out, out_preempt, *x):
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global glb_switch_printed
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global glb_switch_str
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if out:
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out_str = "Switch out "
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else:
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out_str = "Switch In "
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if out_preempt:
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preempt_str = "preempt"
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else:
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preempt_str = ""
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if machine_pid == -1:
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machine_str = ""
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else:
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machine_str = "machine PID %d" % machine_pid
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glb_switch_str = "%16s %5d/%-5d [%03u] %9u.%09u %5d/%-5d %s %s" % \
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(out_str, pid, tid, cpu, ts / 1000000000, ts %1000000000, np_pid, np_tid, machine_str, preempt_str)
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glb_switch_printed = False
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