Changes in make

536e81f07450562caba8e62022763a78fd00a0a7 - perf data ctf: replace libbabeltrace with babeltrace2-ctf-writer

Thu, 04 Jun 2026 19:17:05 +0200

perf data ctf: replace libbabeltrace with babeltrace2-ctf-writerThe 1.x branch of Babeltrace has been superseded by 2.x in 2020 and hasbeen unmaintained since 2022, efforts have started to remove it frompopular distributions.Babeltrace 2.x offers a very similar 'ctf-writer' library that can be usedwith minimal changes for the '--to-ctf' feature and has been packagedsince Debian 11 and Fedora 32.This patch replaces the 'libbabeltrace' build feature with'babeltrace2-ctf-writer' using pkgconfig detection, adjusts the naming ofthe public headers and applies minor API cleanups.There is no changes to the output ctf traces, the ctf-writer API stillimplements version 1.8 of the CTF specification that can be read byeither Babeltrace 1 / 2 or any CTF compliant reader.Also remove some ifdefs in the cli option parsing to allow printing thehelpful error message with '--to-ctf' when built without babeltrace2.Reviewed-by: Ian Rogers Signed-off-by: Michael Jeanson Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Derek Foreman Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Mark Rutland Cc: Mathieu Desnoyers Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

8c8f2093614373ea8179b562320212a25cf937c0 - perf build: Remove NO_GTK2 build test

Mon, 04 May 2026 08:27:58 +0200

perf build: Remove NO_GTK2 build test4751bddd3f983af2 ("perf tools: Make GTK2 support opt-in") changed GTK2build to be opt-in.So NO_GTK2 is meaningless and we need to pass GTK2=1 to enable it.Let's update the build-test configuration for that.Also make_no_ui is the same as make_no_slang since NO_GTK2 is no-op.Let's get rid of it as well.Signed-off-by: Namhyung Kim Cc: Adrian Hunter Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

f637bb2eedc01aa533f2b1e57b6abd8ca864fea8 - perf tests: build-test coverage for NO_JEVENTS=1

Thu, 05 Feb 2026 19:36:02 +0100

perf tests: build-test coverage for NO_JEVENTS=1Leo reported 'perf stat' being broken and this highlighted that the'make NO_JEVENTS=1' variant is missing from 'make -C tools/perfbuild-test', add it.Closes: https://lore.kernel.org/linux-perf-users/20260205175250.GC3529712@e132581.arm.com/Reported-by: Leo Yan Reviewed-by: Leo Yan Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

b5c9bcde61b8cabf3b4194902374e62b8c8a4d41 - perf capstone: Support for dlopen-ing libcapstone.so

Sat, 31 Jan 2026 00:34:37 +0100

perf capstone: Support for dlopen-ing libcapstone.soIf perf is built with LIBCAPSTONE_DLOPEN=1, support dlopen-inglibcapstone.so and then calling the necessary functions by looking themup using dlsym.The types come from capstone.h which means the libcapstone feature checkneeds to pass, and NO_CAPSTONE=1 hasn't been defined. This will causethe definition of HAVE_LIBCAPSTONE_SUPPORT.Earlier versions of this code tried to declare the necessarycapstone.h constants and structs, but they weren't stable and causedbreakages across libcapstone releases.Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Bill Wendling Cc: Charlie Jenkins Cc: Collin Funk Cc: Dmitriy Vyukov Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Justin Stitt Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

169343cc8ff2bd59758760d867bd26adae866a2b - perf build: Remove NO_LIBCAP that controls nothing

Sat, 31 Jan 2026 00:35:39 +0100

perf build: Remove NO_LIBCAP that controls nothingUsing libcap was removed in commit e25ebda78e230283 ("perf cap: Tidy upand improve capability testing") and improve capability testing"),however, some build documentation and a use of the NO_LIBCAP=1 werelingering.Remove these left over bits.Fixes: e25ebda78e230283 ("perf cap: Tidy up and improve capability testing")Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

2e9191573a69ff962b018d85a2c58269a1637b27 - perf build: Remove NO_LIBDW_DWARF_UNWIND option

Sat, 17 Jan 2026 06:28:47 +0100

perf build: Remove NO_LIBDW_DWARF_UNWIND optionLibdw unwinding support is present for every architecture that has aperf_regs.h - perf registers are needed for the initial frame tounwind.Elfutils also supports SPARC, ARC and m68k but there is no support inthe Linux kernel for perf registers on these architectures.As the perf supported DWARF unwinding architectures are a subset of theelfutils ones, remove NO_LIBDW_DWARF_UNWIND as there isn't a case ofelfutils lacking the support need for perf.Signed-off-by: Ian Rogers Cc: Aditya Bodkhe Cc: Adrian Hunter Cc: Albert Ou Cc: Alexandre Ghiti Cc: Andi Kleen Cc: Athira Rajeev Cc: Chun-Tse Shao Cc: Dmitriy Vyukov Cc: Dr. David Alan Gilbert Cc: Guo Ren Cc: Haibo Xu Cc: Howard Chu Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Krzysztof Łopatowski Cc: Leo Yan Cc: Mark Wielaard Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Sergei Trofimovich Cc: Shimin Guo Cc: Stephen Brennan Cc: Thomas Falcon Cc: Will Deacon Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

523471c5163659c61132274123c5470286e407ce - perf build: Skip nondistro build test if libbfd is old

Tue, 23 Dec 2025 18:00:28 +0100

perf build: Skip nondistro build test if libbfd is oldNon distro builds now require a new version of libbfd, so skip the testif the library is too old.The grep test isn't a strong as the feature test intest-libbfd-threadsafe.c, but there seems to be precedent for featuretesting this way here and it's good enough for the build-test rule. Ifthe function exists but returns an error it will be picked up by thefeature test when attempting the build.Signed-off-by: James Clark Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Bill Wendling Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Justin Stitt Cc: Leo Yan Cc: Mark Rutland Cc: Namhyung Kim Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Peter Zijlstra Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

754187ad73b73bcb44f106a8e5fc88789beff1bd - perf build: Remove NO_AUXTRACE build option

Mon, 10 Nov 2025 02:31:51 +0100

perf build: Remove NO_AUXTRACE build optionThe NO_AUXTRACE build option was used when the __get_cpuid featuretest failed or if it was provided on the command line. The option nolonger avoids a dependency on a library and so having the option isjust adding complexity to the code base. Remove the optionCONFIG_AUXTRACE from Build files and HAVE_AUXTRACE_SUPPORT by assumingit is always defined.Signed-off-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

5519b69183c80fbbed8d6eb6dcdf63ba52090d77 - tools build: Make libperl opt-in rather than opt-out, deprecate

Mon, 08 Sep 2025 20:19:18 +0200

tools build: Make libperl opt-in rather than opt-out, deprecateIf libperl is installed then the perf tool build will build againstit. There appears to be limited interest in the scripting support forperl so let's make it opt-in and deprecate it.With this patch applied you need to add LIBPERL=1 to get libperlsupport in perf - there is no warning if libperl is missing, butbuilding will fail if libperl is missing and the build has LIBPERL=1.The perf version output is changed to:```$ perf version --build-optionsperf version 6.17.rc3.g8eca69269947 aio: [ on ] # HAVE_AIO_SUPPORT bpf: [ on ] # HAVE_LIBBPF_SUPPORT bpf_skeletons: [ on ] # HAVE_BPF_SKEL debuginfod: [ on ] # HAVE_DEBUGINFOD_SUPPORT dwarf: [ on ] # HAVE_LIBDW_SUPPORT dwarf_getlocations: [ on ] # HAVE_LIBDW_SUPPORT dwarf-unwind: [ on ] # HAVE_DWARF_UNWIND_SUPPORT auxtrace: [ on ] # HAVE_AUXTRACE_SUPPORT libbfd: [ OFF ] # HAVE_LIBBFD_SUPPORT ( tip: Deprecated, license incompatibility, use BUILD_NONDISTRO=1 and install binutils-dev[el] ) libbpf-strings: [ on ] # HAVE_LIBBPF_STRINGS_SUPPORT libcapstone: [ on ] # HAVE_LIBCAPSTONE_SUPPORT libdw-dwarf-unwind: [ on ] # HAVE_LIBDW_SUPPORT libelf: [ on ] # HAVE_LIBELF_SUPPORT libnuma: [ on ] # HAVE_LIBNUMA_SUPPORT libopencsd: [ OFF ] # HAVE_CSTRACE_SUPPORT libperl: [ OFF ] # HAVE_LIBPERL_SUPPORT ( tip:Deprecated, use LIBPERL=1 and install libperl-dev to build with it ) libpfm4: [ on ] # HAVE_LIBPFM libpython: [ on ] # HAVE_LIBPYTHON_SUPPORT libslang: [ on ] # HAVE_SLANG_SUPPORT libtraceevent: [ on ] # HAVE_LIBTRACEEVENT libunwind: [ OFF ] # HAVE_LIBUNWIND_SUPPORT ( tip:Deprecated, use LIBUNWIND=1 and install libunwind-dev[el] to buildwith it ) lzma: [ on ] # HAVE_LZMA_SUPPORTnuma_num_possible_cpus: [ on ] # HAVE_LIBNUMA_SUPPORT zlib: [ on ] # HAVE_ZLIB_SUPPORT zstd: [ on ] # HAVE_ZSTD_SUPPORT```i.e. there is a tip saying about deprecation and how to get supportback.Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Charlie Jenkins Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Quentin Monnet Cc: Steven Rostedt (VMware) Cc: Tomas Glozar Cc: Yuzhuo Jing Link: https://lore.kernel.org/lkml/aMrk03gigBlGcYLK@x1/Link: https://lore.kernel.org/lkml/CAP-5=fVX+bLBRJCiziDi_hBySgv2NFtDoghtpheSSxVAvvETGw@mail.gmail.com[ Keep the pre-existing perl-ExtUtils-Embed hint for Fedora/RHEL systems ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

8081ca8d6be8c4b08b5d2fa06b2129f00aa95451 - perf tests make: Add NO_LIBDW=1 to minimal and add standalone test

Thu, 03 Jul 2025 07:36:22 +0200

perf tests make: Add NO_LIBDW=1 to minimal and add standalone testMissing testing coverage of NO_LIBDW=1 and add NO_LIBDW=1 to theminimal test configuration.Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250703053622.3141424-1-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

8e63fd1e00f59eab01ab43eb094abc380f8d0c28 - tools: Remove libcrypto dependency

Wed, 25 Jun 2025 22:23:11 +0200

tools: Remove libcrypto dependencyRemove all occurrence of libcrypto in the build system.Signed-off-by: Yuzhuo Jing Signed-off-by: Eric Biggers Reviewed-by: Ian Rogers Link: https://lore.kernel.org/r/20250625202311.23244-5-ebiggers@kernel.orgSigned-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

3cc550f5bbcf54abeeae400b33f618407a0c99f0 - perf tools: Remove dependency on libaudit

Thu, 09 Jan 2025 03:36:31 +0100

perf tools: Remove dependency on libauditAll architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag isno longer needed. With the removal of the flag, the relatedGENERIC_SYSCALL_TABLE can also be removed.libaudit was only used as a fallback for when HAVE_SYSCALL_TABLE_SUPPORTwas not defined, so libaudit is also no longer needed for anyarchitecture.Signed-off-by: Charlie Jenkins Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Arnd Bergmann Cc: Christian Brauner Cc: Guo Ren Cc: Günther Noack Cc: Ian Rogers Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Jonathan Corbet Cc: Leo Yan Cc: Mark Rutland Cc: Mickaël Salaün Cc: Mike Leach Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Will Deacon Link: https://lore.kernel.org/r/20250108-perf_syscalltbl-v6-16-7543b5293098@rivosinc.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

13e17c9ff49119aa2826dbf1e130f34d4d7a55d9 - perf build: Make libunwind opt-in rather than opt-out

Mon, 28 Oct 2024 20:36:19 +0100

perf build: Make libunwind opt-in rather than opt-outHaving multiple unwinding libraries makes the perf code harder tounderstand and we have unused/untested code paths.Perf made BPF support an opt-out rather than opt-in feature. As libbpfhas a libelf dependency, elfutils that provides libelf will alsoprovide libdw. When libdw is present perf will use libdw unwindingrather than libunwind unwinding even if libunwind support is compiledin.Rather than have libunwind built into perf and never used, explicitlydisable the support and make it opt-in.Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Link: https://lore.kernel.org/r/20241028193619.247727-1-irogers@google.comCloses: https://lore.kernel.org/linux-perf-users/CAP-5=fUXkp-d7gkzX4eF+nbjb2978dZsiHZ9abGHN=BN1qAcbg@mail.gmail.com/Signed-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

c3f8644c21df9b7db97eb70e08e2826368aaafa0 - perf report: Support LLVM for addr2line()

Sat, 03 Aug 2024 17:20:06 +0200

perf report: Support LLVM for addr2line()In addition to the existing support for libbfd and calling out toan external addr2line command, add support for using libllvm directly.This is both faster than libbfd, and can be enabled in distro builds(the LLVM license has an explicit provision for GPLv2 compatibility).Thus, it is set as the primary choice if available.As an example, running 'perf report' on a medium-size profile withDWARF-based backtraces took 58 seconds with LLVM, 78 seconds withlibbfd, 153 seconds with external llvm-addr2line, and I got tired andaborted the test after waiting for 55 minutes with external bfdaddr2line (which is the default for perf as compiled by distributionstoday).Evidently, for this case, the bfd addr2line process needs 18 seconds (ona 5.2 GHz Zen 3) to load the .debug ELF in question, hits the 1-secondtimeout and gets killed during initialization, getting restarted anewevery time. Having an in-process addr2line makes this much more robust.As future extensions, libllvm can be used in many other places wherewe currently use libbfd or other libraries: - Symbol enumeration (in particular, for PE binaries). - Demangling (including non-Itanium demangling, e.g. Microsoft or Rust). - Disassembling (perf annotate).However, these are much less pressing; most people don't profile PEbinaries, and perf has non-bfd paths for ELF. The same with demangling;the default _cxa_demangle path works fine for most users, and while bfdobjdump can be slow on large binaries, it is possible to use--objdump=llvm-objdump to get the speed benefits. (It appearsLLVM-based demangling is very simple, should we want that.)Tested with LLVM 14, 15, 16, 18 and 19. For some reason, LLVM 12 was notcorrectly detected using feature_check, and thus was not tested.Committer notes: Added the name and a __maybe_unused to address: 1 13.50 almalinux:8 : FAIL gcc version 8.5.0 20210514 (Red Hat 8.5.0-22) (GCC) util/srcline.c: In function 'dso__free_a2l': util/srcline.c:184:20: error: parameter name omitted void dso__free_a2l(struct dso *) ^~~~~~~~~~~~ make[3]: *** [/git/perf-6.11.0-rc3/tools/build/Makefile.build:158: util] Error 2Signed-off-by: Steinar H. Gunderson Tested-by: Arnaldo Carvalho de Melo Cc: Ian Rogers Link: https://lore.kernel.org/r/20240803152008.2818485-1-sesse@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

2576b20abdb18d80c22cea783fda80e2235f36dd - perf test: Add build test for JEVENTS_ARCH=all

Mon, 05 Aug 2024 21:44:20 +0200

perf test: Add build test for JEVENTS_ARCH=allBuilding with JEVENTS_ARCH=all builds all CPU types and allows thingslike assertions to check the validity of the input JSON.Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Albert Ou Cc: Alexander Shishkin Cc: Atish Patra Cc: Changbin Du Cc: Charles Ci-Jyun Wu Cc: Eric Lin Cc: Greentime Hu Cc: Guilherme Amadio Cc: Ingo Molnar Cc: Inochi Amaoto Cc: James Clark Cc: Ji Sheng Teoh Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Locus Wei-Han Chen Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Peter Zijlstra Cc: Samuel Holland Cc: Sandipan Das Cc: Vincent Chen Cc: Will Deacon Cc: Xu Yang Link: https://lore.kernel.org/r/20240805194424.597244-1-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

8b767db3309595a23eff1c3f2498f17b1f3a9bbc - perf: build: introduce the libcapstone

Sat, 17 Feb 2024 08:40:42 +0100

perf: build: introduce the libcapstoneLater we will use libcapstone to disassemble instructions of samples.Signed-off-by: Changbin Du Reviewed-by: Adrian Hunter Cc: changbin.du@gmail.comCc: Thomas Richter Cc: Andi Kleen Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240217074046.4100789-2-changbin.du@huawei.com List of files: /linux/tools/perf/tests/make

c8e3ade38bc6545faece71cc6c642ad744d4cea3 - perf tests make: Remove the last egrep call, use 'grep -E' instead

Fri, 06 Oct 2023 23:11:05 +0200

perf tests make: Remove the last egrep call, use 'grep -E' insteadOne last case, caught while testing with amazonlinux:2, centos:stream,etc: 4 7.28 amazonlinux:2 : FAIL egrep: warning: egrep is obsolescent; using grep -Egcc version 7.3.1 20180712 (Red Hat 7.3.1-17) (GCC) 8 13.87 centos:stream : FAIL egrep: warning: egrep is obsolescent; using grep -EReviewed-by: Guilherme Amadio Cc: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/lkml/ZUEdtblE8qDAQkBK@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make

c2ac838ef734cb0ff351820b77acc6fd3b6634fb - perf test: Ensure EXTRA_TESTS is covered in build test

Thu, 14 Sep 2023 23:19:47 +0200

perf test: Ensure EXTRA_TESTS is covered in build testAdd to run variable.Signed-off-by: Ian Rogers Tested-by: Namhyung Kim Cc: James Clark Cc: Nick Terrell Cc: Patrice Duroux Cc: Nick Desaulniers Cc: Andrii Nakryiko Cc: Nathan Chancellor Cc: Kajol Jain Cc: Athira Rajeev Cc: Tiezhu Yang Cc: Tom Rix Cc: llvm@lists.linux.devCc: bpf@vger.kernel.orgLink: https://lore.kernel.org/r/20230914211948.814999-5-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

c67c631d52f017c2c4795e024ea6aaf3a092ce9e - perf test: Update build test for changed BPF skeleton defaults

Thu, 14 Sep 2023 23:19:46 +0200

perf test: Update build test for changed BPF skeleton defaultsFix a target name and set BUILD_BPF_SKEL to 0 rather than 1.Signed-off-by: Ian Rogers Tested-by: Namhyung Kim Cc: James Clark Cc: Nick Terrell Cc: Patrice Duroux Cc: Nick Desaulniers Cc: Andrii Nakryiko Cc: Nathan Chancellor Cc: Kajol Jain Cc: Athira Rajeev Cc: Tiezhu Yang Cc: Tom Rix Cc: llvm@lists.linux.devCc: bpf@vger.kernel.orgLink: https://lore.kernel.org/r/20230914211948.814999-4-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux/tools/perf/tests/make

56b11a2126bf2f422831ecf6112b87a4485b221b - perf bpf: Remove support for embedding clang for compiling BPF events (-e foo.c)

Fri, 11 Aug 2023 17:19:48 +0200

perf bpf: Remove support for embedding clang for compiling BPF events (-e foo.c)This never was in the default build for perf, is difficult to maintainas it uses clang/llvm internals so ditch it, keeping, for now, theexternal compilation of .c BPF into .o bytecode and its subsequentloading, that is also going to be removed, do it separately to helpbisection and to properly document what is being removed and why.Committer notes:Extracted from a larger patch and removed some leftovers, namelydeleting these now unused feature tests: tools/build/feature/test-clang.cpp tools/build/feature/test-cxx.cpp tools/build/feature/test-llvm-version.cpp tools/build/feature/test-llvm.cppTesting the use of BPF events after applying this patch:To use the external clang/llvm toolchain to compile a .c event and thenuse libbpf to load it, to get the syscalls:sys_enter_open* tracepointsand read the filename pointer, putting it into the ring buffer rightafter the usual tracepoint payload for 'perf trace' to then print it: [root@quaco ~]# perf trace -e /home/acme/git/perf-tools-next/tools/perf/examples/bpf/augmented_raw_syscalls.c,open* --max-events=10 0.000 systemd-oomd/959 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC) = 12 0.083 abrt-dump-jour/1453 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 0.063 abrt-dump-jour/1454 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 0.082 abrt-dump-jour/1455 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 250.124 systemd-oomd/959 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC) = 12 250.521 systemd-oomd/959 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/memory.pressure", flags: RDONLY|CLOEXEC) = 12 251.047 systemd-oomd/959 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/memory.current", flags: RDONLY|CLOEXEC) = 12 251.162 systemd-oomd/959 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/memory.min", flags: RDONLY|CLOEXEC) = 12 251.242 systemd-oomd/959 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/memory.low", flags: RDONLY|CLOEXEC) = 12 251.353 systemd-oomd/959 openat(dfd: CWD, filename: "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/memory.swap.current", flags: RDONLY|CLOEXEC) = 12 [root@quaco ~]#Same thing, but with a prebuilt .o BPF bytecode: [root@quaco ~]# perf trace -e /home/acme/git/perf-tools-next/tools/perf/examples/bpf/augmented_raw_syscalls.o,open* --max-events=10 0.000 systemd-oomd/959 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC) = 12 0.083 abrt-dump-jour/1453 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 0.083 abrt-dump-jour/1455 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 0.062 abrt-dump-jour/1454 openat(dfd: CWD, filename: "/var/log/journal/d6a97235307247e09f13f326fb607e3c/system.journal", flags: RDONLY|CLOEXEC|NONBLOCK) = 4 249.985 systemd-oomd/959 openat(dfd: CWD, filename: "/proc/meminfo", flags: RDONLY|CLOEXEC) = 12 466.763 thermald/1234 openat(dfd: CWD, filename: "/sys/class/powercap/intel-rapl/intel-rapl:0/intel-rapl:0:2/energy_uj") = 13 467.145 thermald/1234 openat(dfd: CWD, filename: "/sys/class/powercap/intel-rapl/intel-rapl:0/energy_uj") = 13 467.311 thermald/1234 openat(dfd: CWD, filename: "/sys/class/thermal/thermal_zone2/temp") = 13 500.040 cgroupify/24006 openat(dfd: 4, filename: ".", flags: RDONLY|CLOEXEC|DIRECTORY|NONBLOCK) = 5 500.295 cgroupify/24006 openat(dfd: 4, filename: "24616/cgroup.procs") = 5 [root@quaco ~]#Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Andrii Nakryiko Cc: Anshuman Khandual Cc: Athira Rajeev Cc: Brendan Gregg Cc: Carsten Haitzler Cc: Eduard Zingerman Cc: Fangrui Song Cc: He Kuang Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Leo Yan Cc: Madhavan Srinivasan Cc: Mark Rutland Cc: Namhyung Kim Cc: Nathan Chancellor Cc: "Naveen N. Rao" Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Rob Herring Cc: Tiezhu Yang Cc: Tom Rix Cc: Wang Nan Cc: Wang ShaoBo Cc: Yang Jihong Cc: Yonghong Song Cc: YueHaibing Link: https://lore.kernel.org/lkml/ZNZWsAXg2px1sm2h@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux/tools/perf/tests/make