linux-kernel - Re: [PATCH 0/3] Remove the usage of Rust native atomics in debugfs

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Message-ID: <2025102219-jab-footpad-76ee@gregkh>
Date: Wed, 22 Oct 2025 12:29:28 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: Boqun Feng <boqun.feng@...il.com>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>, Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <lossin@...nel.org>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Will Deacon <will@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Mark Rutland <mark.rutland@....com>,
	Matthew Maurer <mmaurer@...gle.com>
Subject: Re: [PATCH 0/3] Remove the usage of Rust native atomics in debugfs

On Tue, Oct 21, 2025 at 11:53:21PM -0400, Boqun Feng wrote:
> Rust native atomics are not supposed to be used in kernel due to the
> mismatch of memory model, since we now have the LKMM atomics in Rust,
> remove the usage of Rust native atomics in debugfs.
> 
> (help is appreciated if anyone wants to help in other subsystem)
> 
> Boqun Feng (3):
>   rust: sync: atomic: Make Atomic*Ops pub(crate)
>   rust: sync: atomic: Implement Debug for Atomic<Debug>
>   rust: debugfs: Replace the usage of Rust native atomics
> 
>  rust/kernel/debugfs/traits.rs       | 53 +++++++++--------------------
>  rust/kernel/sync/atomic.rs          | 12 ++++++-
>  samples/rust/rust_debugfs.rs        | 12 +++----
>  samples/rust/rust_debugfs_scoped.rs |  6 ++--
>  4 files changed, 36 insertions(+), 47 deletions(-)
> 
> -- 
> 2.51.0
> 
> 

Acked-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>