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

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Date:   Wed, 15 Jun 2022 00:11:48 +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 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.

-Sedat-

Download attachment "a.out" of type "application/octet-stream" (16048 bytes)

Download attachment "Makefile.config" of type "application/octet-stream" (41648 bytes)