# 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 # Based on Brendan Gregg's stackcollapse-perf.pl script. from __future__ import print_function import os import sys from collections import defaultdict from 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;.(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])) .y Hosts the 0x221E linux distro kernel.Ubuntu
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2026-01-26selftests: net: fix wrong boolean evaluation in __exit__Gal Pressman
2026-01-13selftests: net: py: teach cmd() how to print itselfJakub Kicinski
2026-01-13selftests: net: py: teach ksft_pr() multi-line safetyJakub Kicinski
2026-01-10selftests: net: py: ensure defer() is only used within a test caseJakub Kicinski
2026-01-10selftests: net: py: capitalize defer queue and improve importJakub Kicinski
2026-01-06selftests: drv-net: Bring back tool() to driver __init__sGal Pressman
2025-12-01selftests: net: py: handle interrupt during cleanupJakub Kicinski
2025-11-20selftests: net: py: read ip link info about remote devJakub Kicinski
2025-11-20selftests: net: py: support ksft ready without waitJakub Kicinski
2025-11-20selftests: net: py: add test variantsJakub Kicinski
2025-11-20selftests: net: py: extract the case generation logicJakub Kicinski
2025-11-20selftests: net: py: coding style improvementsJakub Kicinski
2025-10-12selftests: drv-net: update remaining Python init filesJakub Kicinski
2025-09-30selftests: drv-net: psp: add tests for destroying devicesJakub Kicinski
2025-09-30selftests: drv-net: psp: add association testsJakub Kicinski
2025-09-30selftests: drv-net: base device access API testJakub Kicinski
2025-09-02selftests: net: py: don't default to shell=TrueJakub Kicinski
2025-09-02net: selftests: clean up tools/testing/selftests/net/lib/py/utils.pyBreno Leitao
2025-08-14selftests: drv-net: wait for carrierJakub Kicinski
2025-08-12selftests: net: terminate bkg() commands on exceptionJakub Kicinski
2025-07-17selftests: net: prevent Python from buffering the outputJakub Kicinski
2025-07-16selftests: drv-net: Strip '@' prefix from bpftrace map keysBreno Leitao
2025-07-16selftests: drv-net: add helper/wrapper for bpftraceJakub Kicinski
2025-07-11selftests: drv-net: Add bpftool utilMohsin Bashir
2025-07-02selftests: drv-net: Add test for devlink-rate traffic class bandwidth distrib...Carolina Jubran
2025-05-06selftests: net: exit cleanly on SIGTERM / timeoutJakub Kicinski
2025-04-10netlink: specs: rename rtnetlink specs in accordance with family nameJakub Kicinski
2025-03-03selftests: net: report output format as TAP 13 in Python testsJakub Kicinski
2025-02-25selftests: drv-net-hw: Add a test for symmetric RSS hashGal Pressman
2025-02-25selftests: drv-net: Make rand_port() get a port more reliablyGal Pressman
2025-02-21selftests: net: Add python context manager for netns enteringXiao Liang
2025-02-20selftests: drv-net: improve the use of ksft helpers in XSK queue testJakub Kicinski
2025-02-20selftests: drv-net: add a way to wait for a local processJakub Kicinski
2025-02-20selftests: drv-net: add a warning for bkg + shell + terminateJakub Kicinski
2025-02-11selftests/net: Add selftest for IPv4 RTM_GETMULTICAST supportYuyang Huang
2025-01-09tools: ynl: move python code to separate sub-directoryJan Stancek
2025-01-08selftests: drv-net: test drivers sleeping in ndo_get_stats64Jakub Kicinski
2024-12-23selftests: drv-net: assume stats refresh is 0 if no ethtool -c supportJakub Kicinski
2024-12-16selftests: net: support setting recv_size in YNLJakub Kicinski
2024-10-21Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netPaolo Abeni
2024-10-11selftests: drivers: net: fix name not definedAlessandro Zanni
2024-10-10testing: net-drv: add basic shaper testPaolo Abeni
2024-08-12selftests: drv-net: rss_ctx: test dumping RSS contextsJakub Kicinski
2024-08-02selftests: net: ksft: print more of the stack for checksJakub Kicinski
2024-08-02selftests: net: ksft: support marking tests as disruptiveStanislav Fomichev