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

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Message-ID: <CA+icZUXt8rBadACnXPUdeQbR_nJbqYG+pGPF=767jHV+B2uYsA@mail.gmail.com>
Date:   Mon, 27 Jun 2022 08:20:27 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Linux v5.19-rc1] tools/perf/a.out remains after make -C
 tools/perf clean

On Sun, Jun 26, 2022 at 5:31 PM Arnaldo Carvalho de Melo
<arnaldo.melo@...il.com> wrote:
>
> 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@...il.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!
>

Thanks for the feedback.

If you need further information or have something for testing, please
let me know.

-sed@-