kernel/linux.git/tools/perf/tests/make, branch v7.0-rc7

perf tests: build-test coverage for NO_JEVENTS=1

2026-02-06T14:56:54+00:00

Leo reported 'perf stat' being broken and this highlighted that the 'make NO_JEVENTS=1' variant is missing from 'make -C tools/perf build-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

perf capstone: Support for dlopen-ing libcapstone.so

2026-02-03T14:34:02+00:00

If perf is built with LIBCAPSTONE_DLOPEN=1, support dlopen-ing libcapstone.so and then calling the necessary functions by looking them up using dlsym. The types come from capstone.h which means the libcapstone feature check needs to pass, and NO_CAPSTONE=1 hasn't been defined. This will cause the definition of HAVE_LIBCAPSTONE_SUPPORT. Earlier versions of this code tried to declare the necessary capstone.h constants and structs, but they weren't stable and caused breakages 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

perf build: Remove NO_LIBCAP that controls nothing

2026-02-03T14:32:16+00:00

Using libcap was removed in commit e25ebda78e230283 ("perf cap: Tidy up and improve capability testing") and improve capability testing"), however, some build documentation and a use of the NO_LIBCAP=1 were lingering. 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

perf build: Remove NO_LIBDW_DWARF_UNWIND option

2026-01-20T18:43:56+00:00

Libdw unwinding support is present for every architecture that has a perf_regs.h - perf registers are needed for the initial frame to unwind. Elfutils also supports SPARC, ARC and m68k but there is no support in the Linux kernel for perf registers on these architectures. As the perf supported DWARF unwinding architectures are a subset of the elfutils ones, remove NO_LIBDW_DWARF_UNWIND as there isn't a case of elfutils 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

perf build: Skip nondistro build test if libbfd is old

2026-01-06T22:15:49+00:00

Non distro builds now require a new version of libbfd, so skip the test if the library is too old. The grep test isn't a strong as the feature test in test-libbfd-threadsafe.c, but there seems to be precedent for feature testing this way here and it's good enough for the build-test rule. If the function exists but returns an error it will be picked up by the feature 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

perf build: Remove NO_AUXTRACE build option

2025-11-14T07:03:11+00:00

The NO_AUXTRACE build option was used when the __get_cpuid feature test failed or if it was provided on the command line. The option no longer avoids a dependency on a library and so having the option is just adding complexity to the code base. Remove the option CONFIG_AUXTRACE from Build files and HAVE_AUXTRACE_SUPPORT by assuming it is always defined. Signed-off-by: Ian Rogers Reviewed-by: James Clark Signed-off-by: Namhyung Kim

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

2025-09-19T19:07:21+00:00

If libperl is installed then the perf tool build will build against it. There appears to be limited interest in the scripting support for perl so let's make it opt-in and deprecate it. With this patch applied you need to add LIBPERL=1 to get libperl support in perf - there is no warning if libperl is missing, but building will fail if libperl is missing and the build has LIBPERL=1. The perf version output is changed to: ``` $ perf version --build-options perf 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 build with it ) lzma: [ on ] # HAVE_LZMA_SUPPORT numa_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 support back. 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

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

2025-07-03T18:22:48+00:00

Missing testing coverage of NO_LIBDW=1 and add NO_LIBDW=1 to the minimal test configuration. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250703053622.3141424-1-irogers@google.com Signed-off-by: Namhyung Kim

tools: Remove libcrypto dependency

2025-06-26T17:51:41+00:00

Remove 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.org Signed-off-by: Namhyung Kim

perf tools: Remove dependency on libaudit

2025-01-10T13:59:42+00:00

All architectures now support HAVE_SYSCALL_TABLE_SUPPORT, so the flag is no longer needed. With the removal of the flag, the related GENERIC_SYSCALL_TABLE can also be removed. libaudit was only used as a fallback for when HAVE_SYSCALL_TABLE_SUPPORT was not defined, so libaudit is also no longer needed for any architecture. 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.com Signed-off-by: Arnaldo Carvalho de Melo