# 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])) on value='linux-4.6.y'>linux-4.6.y Hosts the 0x221E linux distro kernel.Ubuntu
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mmit/drivers/acpi/processor_throttling.c?h=linux-6.12.y&id=5a344a505093dd65f82f338ffdb7208321b3630e'>ACPI: Reevaluate whether the T-state is supported or not after cpu is online/...
AgeCommit message (Expand)Author
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner
2018-06-12treewide: kzalloc() -> kcalloc()Kees Cook
2018-03-20powerpc: Use sizeof(*foo) rather than sizeof(struct foo)Markus Elfring
2016-12-25ktime: Cleanup ktime_set() usageThomas Gleixner
2016-12-05constify get_dcookie() and friendsAl Viro
2016-09-13powerpc/sparse: Make a bunch of things staticDaniel Axtens
2016-06-14powerpc: Various typo fixesMichael Ellerman
Zhao Yakui
2011-01-10ACPI: Check the returned value of set_cpus_allowed_ptr before T-state operationZhao Yakui
2010-12-14ACPI processor: remove processor throttling control procfs I/FZhang Rui
2010-10-15ACPI processor: make /proc/acpi/processor/*/throttle depends on CONFIG_ACPI_P...Zhang Rui
2010-08-15ACPI processor: remove deprecated ACPI procfs I/FZhang Rui
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking imp...Tejun Heo
2010-03-14Merge branches 'battery-2.6.34', 'bugzilla-10805', 'bugzilla-14668', 'bugzill...Len Brown
2010-02-16ACPI: remove superfluous NULL pointer check from acpi_processor_get_throttlin...Bartlomiej Zolnierkiewicz
2010-01-28ACPI: replace acpi_integer by u64Lin Ming
2009-11-05ACPI: Move dereference after NULL testJulia Lawall
2009-09-24cpumask: use zalloc_cpumask_var() where possibleLi Zefan
2009-09-19Merge branch 'processor-procfs-2.6.32' into releaseLen Brown
2009-08-28ACPI: Move definition of PREFIX from acpi_bus.h to internal..hLen Brown
2009-08-26acpi processor: remove superfluous warning messageFrans Pop
2009-08-26ACPI processor: force throttling state when BIOS returns incorrect valueFrans Pop
2009-06-24ACPI: Make ACPI processor proc I/F depend on the ACPI_PROCFSZhao Yakui
2009-05-29ACPI processor: remove spurious newline from warning messageFrans Pop
2009-05-15ACPI processor: reset the throttling state once it's invalidZhang Rui
2009-05-15ACPI processor: introduce module parameter processor.ignore_tpcZhang Rui
2009-04-05Merge branch 'misc' into releaseLen Brown
2009-04-03ACPI: constify VFTs (1/2)Jan Engelhardt
2009-04-03ACPI: get_throttling_state() cannot be larger than state_countLen Brown