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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128# stackcollapse.py - format perf samples with one line per distinct call stack# SPDX-License-Identifier: GPL-2.0## This script's output has two space-separated fields. The first is a semicolon# separated stack including the program name (from the "comm" field) and the# function names from the call stack. The second is a count:## swapper;start_kernel;rest_init;cpu_idle;default_idle;native_safe_halt 2## The file is sorted according to the first field.## Input may be created and processed using:## perf record -a -g -F 99 sleep 60# perf script report stackcollapse > out.stacks-folded## (perf script record stackcollapse works too).## Written by Paolo Bonzini <pbonzini@redhat.com># Based on Brendan Gregg's stackcollapse-perf.pl script.
from __future__ import print_function
import osimport sysfrom collections import defaultdictfrom optparse import OptionParser, make_option
sys.path.append(os.environ['PERF_EXEC_PATH'] + \ '/scripts/python/Perf-Trace-Util/lib/Perf/Trace')
from perf_trace_context import *from Core import *from EventClass import *
# command line parsing
option_list = [ # formatting options for the bottom entry of the stack make_option("--include-tid", dest="include_tid", action="store_true", default=False, help="include thread id in stack"), make_option("--include-pid", dest="include_pid", action="store_true", default=False, help="include process id in stack"), make_option("--no-comm", dest="include_comm", action="store_false", default=True, help="do not separate stacks according to comm"), make_option("--tidy-java", dest="tidy_java", action="store_true", default=False, help="beautify Java signatures"), make_option("--kernel", dest="annotate_kernel", action="store_true", default=False, help="annotate kernel functions with _[k]")]
parser = OptionParser(option_list=option_list)(opts, args) = parser.parse_args()
if len(args) != 0: parser.error("unexpected command line argument")if opts.include_tid and not opts.include_comm: parser.error("requesting tid but not comm is invalid")if opts.include_pid and not opts.include_comm: parser.error("requesting pid but not comm is invalid")
# event handlers
lines = defaultdict(lambda: 0)
def process_event(param_dict): def tidy_function_name(sym, dso): if sym is None: sym = '[unknown]'
sym = sym.replace(';', ':') if opts.tidy_java: # the original stackcollapse-perf.pl script gives the # example of converting this: # Lorg/mozilla/javascript/MemberBox;.<init>(Ljava/lang/reflect/Method;)V # to this: # org/mozilla/javascript/MemberBox:.init sym = sym.replace('<', '') sym = sym.replace('>', '') if sym[0] == 'L' and sym.find('/'): sym = sym[1:] try: sym = sym[:sym.index('(')] except ValueError: pass
if opts.annotate_kernel and dso == '[kernel.kallsyms]': return sym + '_[k]' else: return sym
stack = list() if 'callchain' in param_dict: for entry in param_dict['callchain']: entry.setdefault('sym', dict()) entry['sym'].setdefault('name', None) entry.setdefault('dso', None) stack.append(tidy_function_name(entry['sym']['name'], entry['dso'])) else: param_dict.setdefault('symbol', None) param_dict.setdefault('dso', None) stack.append(tidy_function_name(param_dict['symbol'], param_dict['dso']))
if opts.include_comm: comm = param_dict["comm"].replace(' ', '_') sep = "-" if opts.include_pid: comm = comm + sep + str(param_dict['sample']['pid']) sep = "/" if opts.include_tid: comm = comm + sep + str(param_dict['sample']['tid']) stack.append(comm)
stack_string = ';'.join(reversed(stack)) lines[stack_string] = lines[stack_string] + 1
def trace_end(): list = sorted(lines) for stack in list: print("%s %d" % (stack, lines[stack]))