Re: [Linux v5.19-rc1] tools/perf/a.out remains after make -C tools/perf clean

Arnaldo Carvalho de Melo
2022-06-26T15:31:12Z

Em Wed, Jun 15, 2022 at 12:11:48AM +0200, Sedat Dilek escreveu:
> On Tue, Jun 14, 2022 at 9:24 PM Arnaldo Carvalho de Melo
> <arnaldo.melo@gmail.com> wrote:
> >
> > Em Tue, Jun 07, 2022 at 08:59:31PM +0200, Sedat Dilek escreveu:
> > > Hi,
> > >
> > > I observed this some time ago - so this is not only Linux v5.19-rc1 related.
> > >
> > > $ LC_ALL=C make -C tools/perf clean 2>&1 | tee ../make-log_perf-clean.txt
> > > make: Entering directory '/home/dileks/src/linux-kernel/git/tools/perf'
> > > CLEAN x86
> > > CLEAN libtraceevent
> > > CLEAN libapi
> > > CLEAN libbpf
> > > CLEAN libsubcmd
> > > CLEAN libperf
> > > CLEAN fixdep
> > > CLEAN feature-detect
> > > CLEAN python
> > > CLEAN bpf-skel
> > > CLEAN core-objs
> > > CLEAN core-progs
> > > CLEAN core-gen
> > > CLEAN Documentation
> > > make: Leaving directory '/home/dileks/src/linux-kernel/git/tools/perf'
> > >
> > > $ git status -s
> > > M tools/perf/util/unwind-libunwind-local.c
> > > ?? tools/perf/a.out
> > >
> > > $ rm -v tools/perf/a.out
> > > 'tools/perf/a.out' deleted
> > >
> > > $ git checkout -- tools/perf/util/unwind-libunwind-local.c
> > >
> > > $ git status -s
> > > [ empty ]
> >
> > Interesting, since Linus complained at some point that after building
> > perf some new temp file was left there I added 'git status' to my
> > scripts to always get this flagged.
> >
> > I'm not seeing this here.
> >
>
> Just re-checked with Linux v5.19-rc2 and attaching tools/perf/a.out +
> tools/perf/Makefile.config.
>
> Check perf binary:
>
> $ ~/bin/perf -vv
> perf version 5.19.0-rc2
> dwarf: [ on ] # HAVE_DWARF_SUPPORT
> dwarf_getlocations: [ on ] # HAVE_DWARF_GETLOCATIONS_SUPPORT
> glibc: [ on ] # HAVE_GLIBC_SUPPORT
> syscall_table: [ on ] # HAVE_SYSCALL_TABLE_SUPPORT
> libbfd: [ on ] # HAVE_LIBBFD_SUPPORT
> debuginfod: [ OFF ] # HAVE_DEBUGINFOD_SUPPORT
> libelf: [ on ] # HAVE_LIBELF_SUPPORT
> libnuma: [ on ] # HAVE_LIBNUMA_SUPPORT
> numa_num_possible_cpus: [ on ] # HAVE_LIBNUMA_SUPPORT
> libperl: [ on ] # HAVE_LIBPERL_SUPPORT
> libpython: [ on ] # HAVE_LIBPYTHON_SUPPORT
> libslang: [ on ] # HAVE_SLANG_SUPPORT
> libcrypto: [ on ] # HAVE_LIBCRYPTO_SUPPORT
> libunwind: [ on ] # HAVE_LIBUNWIND_SUPPORT
> libdw-dwarf-unwind: [ on ] # HAVE_DWARF_SUPPORT
> zlib: [ on ] # HAVE_ZLIB_SUPPORT
> lzma: [ on ] # HAVE_LZMA_SUPPORT
> get_cpuid: [ on ] # HAVE_AUXTRACE_SUPPORT
> bpf: [ on ] # HAVE_LIBBPF_SUPPORT
> aio: [ on ] # HAVE_AIO_SUPPORT
> zstd: [ on ] # HAVE_ZSTD_SUPPORT
> libpfm4: [ OFF ] # HAVE_LIBPFM
>
> Tried `make distclean`.
> Tried `make tools/ clean` but tools/tracing/rtla produces errors (rm clean).
> Still exists: tools/perf/a.out.

I started seeing this here, will investigate and re-read your reports,
thanks for sending them!

- Arnaldo