From: Josh Triplett <josh@joshtriplett.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Christian Brauner <christian.brauner@ubuntu.com>,
Nick Desaulniers <ndesaulniers@google.com>,
alex.gaynor@gmail.com, Greg KH <gregkh@linuxfoundation.org>,
geofft@ldpreload.com, jbaublitz@redhat.com,
Masahiro Yamada <masahiroy@kernel.org>,
Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>,
Steven Rostedt <rostedt@goodmis.org>,
LKML <linux-kernel@vger.kernel.org>,
clang-built-linux <clang-built-linux@googlegroups.com>,
Kees Cook <keescook@chromium.org>
Subject: Re: Linux kernel in-tree Rust support
Date: Tue, 28 Jul 2020 23:34:17 -0700 [thread overview]
Message-ID: <20200729063417.GD286933@localhost> (raw)
In-Reply-To: <20200728204037.GC1012@bug>
On Tue, Jul 28, 2020 at 10:40:38PM +0200, Pavel Machek wrote:
> > We just need to make sure that any kernel CI infrastructure tests that
> > right away, then, so that failures don't get introduced by a patch from
> > someone without a Rust toolchain and not noticed until someone with a
> > Rust toolchain tests it.
>
> So... I'm fan of Rust, but while trying to use it one thing was obvious: it
> takes _significantly_ longer than C to compile and needs gigabyte a lot of RAM.
>
> Kernel is quite big project, can CI infrastructure handle additional load?
>
> Will developers see significantly longer compile times when Rust is widespread?
I wouldn't expect the addition of Rust to the kernel to substantially
impact overall build time; on balance, I'd expect the major bottleneck
in kernel builds to continue to be linking and other serialized steps,
not compiling and other highly parallel steps.
There are also *many* things that can be done to improve Rust build time
in a project. And I don't expect that in-kernel Rust will have many
dependencies on third-party crates (since they'd need to be checked into
the tree).
next prev parent reply other threads:[~2020-07-29 6:34 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 18:41 Linux kernel in-tree Rust support Nick Desaulniers
2020-07-09 20:52 ` Miguel Ojeda
2020-07-10 5:36 ` Josh Triplett
2020-07-10 6:28 ` Greg KH
2020-07-10 12:50 ` Christian Brauner
2020-07-10 16:10 ` Kees Cook
[not found] ` <CAFRnB2WNo45J8h3-ncopLKENvcO0rf7J3xsy_eRKwFSpDD-5sQ@mail.gmail.com>
2020-07-10 23:05 ` Kees Cook
2020-07-10 22:59 ` Josh Triplett
2020-07-10 23:54 ` Linus Torvalds
2020-07-11 21:03 ` Josh Triplett
2020-07-28 20:40 ` Pavel Machek
2020-07-29 6:34 ` Josh Triplett [this message]
2020-12-17 21:45 ` Pavel Machek
2020-12-18 3:31 ` Miguel Ojeda
2020-07-11 17:13 ` Geoffrey Thomas
2020-07-12 12:31 ` Adrian Bunk
2020-07-12 19:39 ` Josh Triplett
2020-07-12 20:33 ` Linus Torvalds
2020-07-12 20:45 ` Adrian Bunk
2020-07-14 8:27 ` David Laight
2020-07-16 13:06 ` Arnd Bergmann
2020-07-16 23:12 ` Josh Triplett
2020-07-19 18:19 ` Adrian Bunk
2020-07-20 14:46 ` David Laight
2020-08-23 21:02 ` Adrian Bunk
2020-08-23 21:54 ` Geoffrey Thomas
2020-07-13 18:11 ` Eric W. Biederman
2020-07-13 21:33 ` Josh Triplett
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