# 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])) nux-4.5.y Hosts the 0x221E linux distro kernel.Ubuntu
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AgeCommit message (Expand)Author
2016-12-13Merge branch 'for-4.10/block' of git://git.kernel.dk/linux-blockLinus Torvalds
2016-11-30isofs: add KERN_CONT to printing of ER recordsMike Rapoport
2016-11-01block,fs: untangle fs.h and blk_types.hChristoph Hellwig
2016-10-18isofs: Do not return EACCES for unknown filesystemsJan Kara
2016-07-31get rid of 'parent' argument of ->d_compare()Al Viro
2016-07-28Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vir...Linus Torvalds
2016-07-28Merge branch 'salted-string-hash'Linus Torvalds
2016-06-30Remove last traces of ->sync_pageMatthew Wilcox
2016-06-10vfs: make the string hashes salt the hashLinus Torvalds
2016-06-07fs: have ll_rw_block users pass in op and flags separatelyMike Christie
2016-05-09isofs: switch to ->iterate_shared()Al Viro
2016-05-09get_acorn_filename(): deobfuscate a bitAl Viro
2016-05-09Merge branch 'for-linus' into work.lookupsAl Viro
2016-05-07get_rock_ridge_filename(): handle malformed NM entriesAl Viro
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov
2016-01-14kmemcg: account certain kmem allocations to memcgVladimir Davydov
2015-12-08don't put symlink bodies in pagecache into highmemAl Viro
2015-04-15VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells
2015-01-07isofs: Fix bug in the way to check if the year is a leap yearOscar Forner Martinez
2014-12-19isofs: Fix unchecked printing of ER recordsJan Kara
2014-12-16Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jac...Linus Torvalds
2014-12-15isofs: Fix infinite looping over CE entriesJan Kara
2014-11-19isofs: avoid unused function warningArnd Bergmann
2014-10-31isofs: don't bother with ->d_op for normal caseAl Viro
2014-10-28isofs_cmp(): we'll never see a dentry for . or ..Al Viro
2014-10-14isofs: replace strnicmp with strncasecmpRasmus Villemoes
2014-08-19isofs: Fix unbounded recursion when processing relocated directoriesJan Kara
2014-08-08initramfs: support initramfs that is bigger than 2GiBYinghai Lu
2014-04-07Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jac...Linus Torvalds
2014-03-13fs: push sync_filesystem() down to the file system's remount_fs()Theodore Ts'o
2014-03-12fs/isofs/inode.c add __init to init_inodecache()Fabian Frederick
2013-10-24isofs: don't pass dentry to isofs_hash{i,}_common()Al Viro
2013-07-31isofs: Refuse RW mount of the filesystem instead of making it ROJan Kara
2013-06-29Don't pass inode to ->d_hash() and ->d_compare()Linus Torvalds
2013-06-29[readdir] convert isofsAl Viro
2013-03-12fs: Readd the fs module aliases.Eric W. Biederman
2013-03-03fs: Limit sys_mount to only request filesystem modules.Eric W. Biederman
2013-02-26fs: encode_fh: return FILEID_INVALID if invalid fid_typeNamjae Jeon
2013-02-22new helper: file_inode(file)Al Viro