# 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. 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 = lines.keys() list.sort() for stack in list: print "%s %d" % (stack, lines[stack]) ux-4.6.y Hosts the 0x221E linux distro kernel.Ubuntu
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path: root/arch/arm/lib
AgeCommit message (Expand)Author
2011-11-26ARM: 7171/1: unwind: add unwind directives to bitops assembly macrosWill Deacon
2011-10-25Merge branch 'misc' into for-linusRussell King
2011-10-17ARM: 7125/1: Add unwinding annotations for 64bit division functionsLaura Abbott
2011-10-17ARM: 7068/1: process: change from __backtrace to dump_stack in show_regsLaura Abbott
2011-10-02ARM: include linux/highmem.h in uaccess functionsArnd Bergmann
2011-08-07arm: remove "optimized" SHA1 routinesLinus Torvalds
2011-07-12ARM: remove unnecessary mach/hardware.h includesRob Herring
2011-05-27ARM: 6945/1: Add unwinding support for division functionsLaura Abbott
2011-03-20Merge branches 'fixes', 'pgt-next' and 'versatile' into develRussell King
2011-02-21ARM: pgtable: add pud-level codeRussell King
2011-02-19ARM: 6653/1: bitops: Use BX instead of MOV PC,LRDave Martin
2011-02-02ARM: bitops: switch set/clear/change bitops to use ldrex/strexRussell King
2011-02-02ARM: bitops: ensure set/clear/change bitops take a word-aligned pointerRussell King
2011-01-10ARM: udelay: prevent math rounding resulting in short udelaysRussell King
2011-01-06Merge branch 'smp' into miscRussell King
2010-11-24ARM: 6482/2: Fix find_next_zero_bit and related assemblyJames Jones
2010-11-04ARM: 6384/1: Remove the domain switching on ARMv6k/v7 CPUsCatalin Marinas
2010-08-03Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
2010-07-26ARM: Fix csum_partial_copy_from_user()Russell King
2010-06-24ARM: Remove support for LinkUp Systems L7200 SDP.Russell King
2010-05-08ARM: 6110/1: Fix Thumb-2 kernel builds when UACCESS_WITH_MEMCPY is enabledCatalin Marinas
2010-04-21ARM: fix build error in arch/arm/kernel/process.cRussell King
2010-04-05Merge branch 'master' into export-slabhTejun Heo
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking imp...Tejun Heo
2010-03-29ARM: 6006/1: ARM: Use the correct NOP size in memmove for Thumb-2 kernel buildsCatalin Marinas