linux-kernel - Re: [PATCH] kbuild: dummy-tools: Add python3

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Message-ID: <20260204074557.GB1632007@ax162>
Date: Wed, 4 Feb 2026 00:45:57 -0700
From: Nathan Chancellor <nathan@...nel.org>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: linux-kbuild@...r.kernel.org, Michal Suchanek <msuchanek@...e.de>,
	Nicolas Schier <nsc@...nel.org>,
	Rob Clark <robin.clark@....qualcomm.com>,
	Dmitry Baryshkov <lumag@...nel.org>,
	Abhinav Kumar <quic_abhinavk@...cinc.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kbuild: dummy-tools: Add python3

On Wed, Feb 04, 2026 at 04:10:24PM +0900, Masahiro Yamada wrote:
> On Fri, Jan 30, 2026 at 9:17 AM Nathan Chancellor <nathan@...nel.org> wrote:
> >
> > On Wed, 21 Jan 2026 11:57:57 +0100, Michal Suchanek wrote:
> > > DRM_MSM_VALIDATE_XML depends on a python feature. Add a dummy python
> > > interpreter to make it possible to configure this option with dummy
> > > tools.
> > >
> > >
> >
> > Applied to
> >
> >   https://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux.git kbuild-next
> >
> > Thanks!
> >
> > [1/1] kbuild: dummy-tools: Add python3
> >       https://git.kernel.org/kbuild/c/76c73cfde7988
> >
> > Please look out for regression or issue reports or other follow up
> > comments, as they may result in the patch/series getting dropped or
> > reverted. Patches applied to an "unstable" branch are accepted pending
> > wider testing in -next and any post-commit review; they will generally
> > be moved to the main branch in a week if no issues are found.
> >
> > Best regards,
> > --
> > Nathan Chancellor <nathan@...nel.org>
> 
> 
> This was unneeded because we can pass PYTHON3=true
> from the command line?

Hmmm yeah, I guess that is a fair point, I had not considered that
alternative. I had figured that some folks may add scripts/dummy-tools
to PATH like

  $ PATH=$PWD/scripts/dummy-tools:$PATH make ...

to have all relevant tools be used automatically from their default
values than having to specify

  $ make CROSS_COMPILE=scripts/dummy-tools/ PAHOLE=scripts/dummy-tools/pahole PYTHON3=true

or whatever (at least, that is probably what I would do if I was using
this).

Cheers,
Nathan