From: Christoph Hellwig <hch@lst.de>
To: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Cc: "Al Viro" <viro@zeniv.linux.org.uk>,
"Masahiro Yamada" <masahiroy@kernel.org>,
"Nathan Chancellor" <nathan@kernel.org>,
"Andrew Morton" <akpm@linux-foundation.org>,
"Willy Tarreau" <w@1wt.eu>,
"Thomas Weißschuh" <linux@weissschuh.net>,
"Brendan Higgins" <brendan.higgins@linux.dev>,
"David Gow" <davidgow@google.com>, "Rae Moar" <rmoar@google.com>,
"Shuah Khan" <shuah@kernel.org>,
"Jonathan Corbet" <corbet@lwn.net>,
"Nicolas Schier" <nicolas.schier@linux.dev>,
"Kees Cook" <kees@kernel.org>,
"Christian Brauner" <brauner@kernel.org>,
"Jan Kara" <jack@suse.cz>, "Christoph Hellwig" <hch@lst.de>,
"Luis Chamberlain" <mcgrof@kernel.org>,
"Christophe Leroy" <christophe.leroy@csgroup.eu>,
linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com,
linux-doc@vger.kernel.org, workflows@vger.kernel.org,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v5 06/15] fs,fork,exit: export symbols necessary for KUnit UAPI support
Date: Mon, 21 Jul 2025 09:20:33 +0200 [thread overview]
Message-ID: <20250721072033.GA30175@lst.de> (raw)
In-Reply-To: <20250721075849-b3cf33b6-2516-4707-bab6-53fe95afbffa@linutronix.de>
On Mon, Jul 21, 2025 at 08:42:40AM +0200, Thomas Weißschuh wrote:
> This would still leave the exports for replace_fd(), create_pipe_files()
> and set_fs_pwd(). Instead of using kernel/umh.c,
Please look into a way to just run your userspace tests from userspace.
It's not that hard, people have done this novel concept for at least
a few decades if you look into it.
> I can also extend
> kernel/usermode_driver.c to provide these in a way that works for me.
> But kernel/usermode_driver.c is dead code, unused since commit
> 98e20e5e13d2 ("bpfilter: remove bpfilter")
> Would it be fine to export those symbols? And delete usermode_driver.c,
> as carrying around an unused generic framework seems pointless.
Unused code should always go away. Weirdly enough USERMODE_DRIVER is
selected by BPF_PRELOAD despite that not really using any code from
it, though.
next prev parent reply other threads:[~2025-07-21 7:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-17 8:48 [PATCH v5 00/15] kunit: Introduce UAPI testing framework Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 01/15] kbuild: userprogs: avoid duplication of flags inherited from kernel Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 02/15] kbuild: userprogs: also inherit byte order and ABI " Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 03/15] kbuild: doc: add label for userprogs section Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 04/15] init: re-add CONFIG_CC_CAN_LINK_STATIC Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 05/15] init: add nolibc build support Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 06/15] fs,fork,exit: export symbols necessary for KUnit UAPI support Thomas Weißschuh
2025-07-18 16:44 ` Al Viro
2025-07-21 6:42 ` Thomas Weißschuh
2025-07-21 7:20 ` Christoph Hellwig [this message]
2025-07-17 8:48 ` [PATCH v5 07/15] kunit: tool: Add test for nested test result reporting Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 08/15] kunit: tool: Don't overwrite test status based on subtest counts Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 09/15] kunit: tool: Parse skipped tests from kselftest.h Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 10/15] kunit: Always descend into kunit directory during build Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 11/15] kunit: qemu_configs: loongarch: Enable LSX/LSAX Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 12/15] kunit: Introduce UAPI testing framework Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 13/15] kunit: uapi: Add example for UAPI tests Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 14/15] kunit: uapi: Introduce preinit executable Thomas Weißschuh
2025-07-17 8:48 ` [PATCH v5 15/15] kunit: uapi: Validate usability of /proc Thomas Weißschuh
2025-07-17 13:23 ` [PATCH v5 00/15] kunit: Introduce UAPI testing framework Christoph Hellwig
2025-07-17 13:49 ` Mark Brown
2025-07-18 6:22 ` Thomas Weißschuh
2025-07-21 7:09 ` Christoph Hellwig
2025-08-04 15:01 ` Thomas Weißschuh
2025-08-12 9:41 ` Christoph Hellwig
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