linux-kernel - [GIT PULL] locking changes for v6.18

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Message-ID: <aNanBZ9VbIO2CO9x@gmail.com>
Date: Fri, 26 Sep 2025 16:45:25 +0200
From: Ingo Molnar <mingo@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>, Will Deacon <will@...nel.org>,
	Waiman Long <longman@...hat.com>, Boqun Feng <boqun.feng@...il.com>,
	Borislav Petkov <bp@...en8.de>, Uros Bizjak <ubizjak@...il.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Gary Guo <gary@...yguo.net>
Subject: [GIT PULL] locking changes for v6.18

Linus,

Please pull the latest locking/core Git tree from:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-2025-09-26

   # HEAD: 17d9f8eaa87d40a2ff66598875a43363e37a909b MAINTAINERS: update atomic infrastructure entry to include Rust

Locking updates for v6.16 mostly include Rust runtime enhancements:

 - Add initial support for generic LKMM atomic variables in Rust. (Boqun Feng)
 - Add the wrapper for `refcount_t` in Rust. (Gary Guo)
 - Make `data` in `Lock` structurally pinned. (Daniel Almeida)
 - Add a new reviewer, Gary Guo.

 Thanks,

	Ingo

------------------>
Boqun Feng (9):
      rust: Introduce atomic API helpers
      rust: sync: Add basic atomic operation mapping framework
      rust: sync: atomic: Add ordering annotation types
      rust: sync: atomic: Add generic atomics
      rust: sync: atomic: Add atomic {cmp,}xchg operations
      rust: sync: atomic: Add the framework of arithmetic operations
      rust: sync: atomic: Add Atomic<u{32,64}>
      rust: sync: atomic: Add Atomic<{usize,isize}>
      rust: sync: Add memory barriers

Gary Guo (5):
      rust: implement `kernel::sync::Refcount`
      rust: make `Arc::into_unique_or_drop` associated function
      rust: convert `Arc` to use `Refcount`
      rust: block: convert `block::mq` to use `Refcount`
      MAINTAINERS: update atomic infrastructure entry to include Rust


 MAINTAINERS                               |    6 +-
 rust/helpers/atomic.c                     | 1040 +++++++++++++++++++++++++++++
 rust/helpers/barrier.c                    |   18 +
 rust/helpers/helpers.c                    |    2 +
 rust/helpers/refcount.c                   |   10 +
 rust/kernel/block/mq/operations.rs        |    7 +-
 rust/kernel/block/mq/request.rs           |   73 +-
 rust/kernel/sync.rs                       |    4 +
 rust/kernel/sync/arc.rs                   |   55 +-
 rust/kernel/sync/atomic.rs                |  551 +++++++++++++++
 rust/kernel/sync/atomic/internal.rs       |  265 ++++++++
 rust/kernel/sync/atomic/ordering.rs       |  104 +++
 rust/kernel/sync/atomic/predefine.rs      |  169 +++++
 rust/kernel/sync/barrier.rs               |   61 ++
 rust/kernel/sync/refcount.rs              |  113 ++++
 scripts/atomic/gen-atomics.sh             |    1 +
 scripts/atomic/gen-rust-atomic-helpers.sh |   67 ++
 17 files changed, 2454 insertions(+), 92 deletions(-)
 create mode 100644 rust/helpers/atomic.c
 create mode 100644 rust/helpers/barrier.c
 create mode 100644 rust/kernel/sync/atomic.rs
 create mode 100644 rust/kernel/sync/atomic/internal.rs
 create mode 100644 rust/kernel/sync/atomic/ordering.rs
 create mode 100644 rust/kernel/sync/atomic/predefine.rs
 create mode 100644 rust/kernel/sync/barrier.rs
 create mode 100644 rust/kernel/sync/refcount.rs
 create mode 100755 scripts/atomic/gen-rust-atomic-helpers.sh