From: Sasha Levin <sashal@kernel.org>
To: Nicolas Schier <nsc@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kbuild@vger.kernel.org, linux-kselftest@vger.kernel.org,
workflows@vger.kernel.org, tools@kernel.org, x86@kernel.org,
Thomas Gleixner <tglx@kernel.org>,
"Paul E . McKenney" <paulmck@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jonathan Corbet <corbet@lwn.net>,
Dmitry Vyukov <dvyukov@google.com>,
Randy Dunlap <rdunlap@infradead.org>,
Cyril Hrubis <chrubis@suse.cz>, Kees Cook <kees@kernel.org>,
Jake Edge <jake@lwn.net>,
David Laight <david.laight.linux@gmail.com>,
Askar Safin <safinaskar@zohomail.com>,
Gabriele Paoloni <gpaoloni@redhat.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Andrew Morton <akpm@linux-foundation.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Ingo Molnar <mingo@redhat.com>, Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH v3 1/9] kernel/api: introduce kernel API specification framework
Date: Tue, 5 May 2026 03:45:41 -0400 [thread overview]
Message-ID: <20260505074545.430334-2-sashal@kernel.org> (raw)
In-Reply-To: <afIykLLPj7m0fcsX@levanger>
On Wed, Apr 29, 2026 at 06:32:16PM +0200, Nicolas Schier wrote:
> On Sun, Apr 26, 2026 at 11:37:45PM -0400, Nathan Chancellor wrote:
> > On Fri, 24 Apr 2026 12:51:21 -0400, Sasha Levin <sashal@kernel.org> wrote:
> > > diff --git a/kernel/Makefile b/kernel/Makefile
> > > [...]
> > > +obj-$(CONFIG_KAPI_SPEC) += api/
> > > +# Ensure api/ is always cleaned even when CONFIG_KAPI_SPEC is not set
> > > +obj- += api/
> >
> > If $(CONFIG_KAPI_SPEC) is not set, shouldn't
> >
> > obj-$(CONFIG_KAPI_SPEC) += api/
> >
> > evaluate to
> >
> > obj- += api/
> >
> > anyways? Why the duplication? This is the only place in the kernel where
> > this would be needed?
>
> yes, this is definitely not needed, as obj- is always evaluated during
> 'make clean', cp. scripts/Makefile.clean [1].
>
> Kind regards
> Nicolas
>
> [1]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/scripts/Makefile.clean?h=v7.1-rc1#n30
Thanks for the pointer!
The redundant "obj- += api/" and the accompanying comment are dropped in v4.
--
Thanks,
Sasha
next prev parent reply other threads:[~2026-05-05 7:46 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-24 16:51 [PATCH v3 0/9] Kernel API Specification Framework Sasha Levin
2026-04-24 16:51 ` [PATCH v3 1/9] kernel/api: introduce kernel API specification framework Sasha Levin
2026-04-27 3:37 ` Nathan Chancellor
2026-04-29 16:32 ` Nicolas Schier
2026-05-05 7:45 ` Sasha Levin [this message]
2026-05-05 7:45 ` Sasha Levin
2026-04-29 16:43 ` Nicolas Schier
2026-05-05 7:45 ` Sasha Levin
2026-04-24 16:51 ` [PATCH v3 2/9] kernel/api: enable kerneldoc-based API specifications Sasha Levin
2026-04-30 14:47 ` Nicolas Schier
2026-05-05 7:45 ` Sasha Levin
2026-04-24 16:51 ` [PATCH v3 3/9] kernel/api: add debugfs interface for kernel " Sasha Levin
2026-04-24 16:51 ` [PATCH v3 4/9] tools/kapi: add kernel API specification extraction tool Sasha Levin
2026-04-24 16:51 ` [PATCH v3 5/9] kernel/api: add API specification for sys_open Sasha Levin
2026-04-24 16:51 ` [PATCH v3 6/9] kernel/api: add API specification for sys_close Sasha Levin
2026-04-24 16:51 ` [PATCH v3 7/9] kernel/api: add API specification for sys_read Sasha Levin
2026-04-24 16:51 ` [PATCH v3 8/9] kernel/api: add API specification for sys_write Sasha Levin
2026-04-24 16:51 ` [PATCH v3 9/9] kernel/api: add runtime verification selftest Sasha Levin
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