linux-kernel - [GIT PULL] Rust pin-init for v6.18

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Message-ID: <20250912174148.373530-1-lossin@kernel.org>
Date: Fri, 12 Sep 2025 19:41:46 +0200
From: Benno Lossin <lossin@...nel.org>
To: Danilo Krummrich <dakr@...nel.org>
Cc: Benno Lossin <lossin@...nel.org>,
	Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Tejun Heo <tj@...nel.org>,
	Tamir Duberstein <tamird@...il.com>,
	Dirk Behme <dirk.behme@...il.com>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Fiona Behrens <me@...enk.dev>,
	Christian Schrefl <chrisi.schrefl@...il.com>,
	Alban Kurti <kurti@...icto.ai>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org
Subject: [GIT PULL] Rust pin-init for v6.18

Hi Danilo,

As discussed with Miguel, I'm sending my PR to you this time.

The code changes themselves aren't that big, but functionality-wise
there are three important ones: pin-projections, code blocks and access
to previously initialized fields. More syntax changes will be on the way
for v6.19 and I hope I'll be a bit earlier in that cycle :)

The commits have been in linux-next for one day.

I have a conflict with your devres fix that's in -rc3, the resolution in
linux-next looks good.

Please pull for v6.18 -- thanks!

---
Cheers,
Benno

The following changes since commit 8f5ae30d69d7543eee0d70083daf4de8fe15d585:

  Linux 6.17-rc1 (2025-08-10 19:41:16 +0300)

are available in the Git repository at:

  https://github.com/Rust-for-Linux/linux.git tags/pin-init-v6.18

for you to fetch changes up to 42415d163e5df6db799c7de6262d707e402c2c7e:

  rust: pin-init: add references to previously initialized fields (2025-09-11 23:30:02 +0200)

----------------------------------------------------------------
pin-init changes for v6.18

Changed:

- `#[pin_data]` now generates a `*Projection` struct similar to the
  `pin-project` crate.

- Add initializer code blocks to `[try_][pin_]init!` macros: make
  initializer macros accept any number of `_: {/* arbitrary code */},` &
  make them run the code at that point.

- Make the `[try_][pin_]init!` macros expose initialized fields via a
  `let` binding as `&mut T` or `Pin<&mut T>` for later fields.

Upstream dev news:

- Released v0.0.10 before the changes included in this tag.

- Inform users of the impending rename from `pinned-init` to `pin-init`
  (in the kernel the rename already happened).

- More CI improvements.

----------------------------------------------------------------
Benno Lossin (6):
      rust: pin-init: examples: error: use `Error` in `fn main()`
      rust: pin-init: README: add information banner on the rename to `pin-init`
      rust: pin-init: rename `project` -> `project_this` in doctest
      rust: pin-init: add pin projections to `#[pin_data]`
      rust: pin-init: add code blocks to `[try_][pin_]init!` macros
      rust: pin-init: add references to previously initialized fields

 rust/kernel/devres.rs           |   6 +-
 rust/kernel/workqueue.rs        |   9 +-
 rust/pin-init/README.md         |  12 ++
 rust/pin-init/examples/error.rs |   4 +-
 rust/pin-init/src/lib.rs        |   4 +-
 rust/pin-init/src/macros.rs     | 239 ++++++++++++++++++++++++++++++++++------
 samples/rust/rust_driver_pci.rs |   2 +-
 7 files changed, 227 insertions(+), 49 deletions(-)