linux-kernel - Re: [PATCH v9 02/13] perf test: Add build infra for perf test tools for CoreSight tests

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Date:   Thu, 6 Oct 2022 23:07:19 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     carsten.haitzler@...s.arm.com, Jiri Slaby <jirislaby@...nel.org>,
        linux-kernel@...r.kernel.org, coresight@...ts.linaro.org,
        suzuki.poulose@....com, mathieu.poirier@...aro.org,
        mike.leach@...aro.org, linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v9 02/13] perf test: Add build infra for perf test tools
 for CoreSight tests

On Thu, Oct 06, 2022 at 11:22:13AM -0300, Arnaldo Carvalho de Melo wrote:

[...]

> > @@ -1006,7 +1014,10 @@ install-tests: all install-gtk
> >                 $(INSTALL) tests/shell/*.sh '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell'; \
> >                 $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \
> >                 $(INSTALL) tests/shell/lib/*.sh -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \
> > -               $(INSTALL) tests/shell/lib/*.py -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'
> > +               $(INSTALL) tests/shell/lib/*.py -m 644 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/lib'; \
> > +               $(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/coresight'; \
> > +               $(INSTALL) tests/shell/coresight/*.sh '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/tests/shell/coresight'
> > +       $(Q)$(MAKE) -C tests/shell/coresight install-tests
> > 
> > It's deliberately to not add '-m 644' when install coresight test
> > shell scripts under the folder tests/shell/coresight/ so that we can
> > keep the executable permission for these scripts.  On the other flip,
> > we set 644 mode for the scripts under tests/shell/lib/ so these
> > scripts will not be executed directly by perf test framework.
> > 
> > @Carsten, if have chance could you confirm for above change?
> 
> If you need for some .sh, coresight test's to have x set while all of
> the others don't have, and you have a good reason for that, ok, we just
> add a comment.

Simply to say, all lib scripts are not needed for execute permission.
Yes, it's good to add a comment for the installation steps.

> > >   DESCEND plugins
> > >   GEN     /tmp/build/perf/python/perf.so
> > >   INSTALL trace_plugins
> > >   INSTALL binaries
> > >   INSTALL tests
> > > install: cannot stat 'tests/shell/coresight/*.sh': No such file or directory
> > > make[2]: *** [Makefile.perf:1007: install-tests] Error 1
> > > make[2]: *** Waiting for unfinished jobs....
> > > 
> > > I'll add it back when the first .sh gets added to tests/shell/coresight/
> > 
> > Sorry for introducing extra efforts for you and thanks!
> 
> This also has to go, I'll check and fix this loop that doesn't follow
> the existing output style, happens with ´make install', etc too:
> 
> ⬢[acme@...lbox perf]$ make -C tools/perf clean
> make: Entering directory '/var/home/acme/git/perf/tools/perf'
>   CLEAN   x86
>   CLEAN   libtraceevent
>   CLEAN   libapi
>   CLEAN   libbpf
>   CLEAN   libsubcmd
>   CLEAN   libperf
>   CLEAN   fixdep
>   CLEAN   feature-detect
>   CLEAN   python
>   CLEAN   bpf-skel
> make -C asm_pure_loop clean >/dev/null        <-------------------
> make -C memcpy_thread clean >/dev/null        <-------------------
> make -C thread_loop clean >/dev/null          <-------------------
> make -C unroll_loop_thread clean >/dev/null   <-------------------

Ouch, if we can update the file tests/shell/coresight/Makefile as below:

$(CLEANDIRS):
        $(call QUIET_CLEAN, test-$(@:clean-%=%)) $(Q)$(MAKE) -C $(@:clean-%=%) clean >/dev/null

Then we can get output as:

  # make clean
  CLEAN   arm64
  CLEAN   libtraceevent
  CLEAN   libapi
  CLEAN   libbpf
  CLEAN   libsubcmd
  CLEAN   libperf
  CLEAN   fixdep
  CLEAN   feature-detect
  CLEAN   python
  CLEAN   bpf-skel
  CLEAN   test-asm_pure_loop
  CLEAN   test-memcpy_thread
  CLEAN   test-thread_loop
  CLEAN   test-unroll_loop_thread
  CLEAN   core-objs
  CLEAN   core-progs
  CLEAN   core-gen
  CLEAN   Documentation

Sorry for inconvenience.

Thanks,
Leo