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

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Message-ID: <Yrh7uSL0AybSqd0V@kernel.org>
Date:   Sun, 26 Jun 2022 12:31:05 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Sedat Dilek <sedat.dilek@...il.com>
Cc:     Arnaldo Carvalho de Melo <arnaldo.melo@...il.com>,
        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

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!

- Arnaldo