Rust synchronization changes for v7.0

[GIT PULL][PATCH 00/36] Rust synchronization changes for v7.0

Posted by Boqun Feng 3 weeks, 6 days ago

Peter,

Please pull the following changes of Rust synchronization for 7.0 into
tip/locking/core, you can find the details of the changes in the git tag
message below.

Thanks!

Regards,
Boqun

----------------------------------------------------------------

The following changes since commit a45026cef17d1080c985adf28234d6c8475ad66f:

  locking/local_lock: Include more missing headers (2026-01-08 11:21:57 +0100)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git/ tags/rust-sync-7.0

for you to fetch changes up to ccf9e070116a81d29aae30db501d562c8efd1ed8:

  rust: sync: Inline various lock related methods (2026-01-10 10:53:46 +0800)

----------------------------------------------------------------
Rust synchronization changes for v7.0:

- Add support for Atomic<i8/i16/bool> and replace most Rust native AtomicBool
  usages with Atomic<bool>, and further switching will require Atomic<Flag>
- Clean up LockClassKey and improve its docs
- Add missing Send and Sync trait impl for SetOnce
- Make ARef Unpin as it is supposed to be
- Add __rust_helper to a few Rust helpers as a preparation for helper LTO
- Inline various lock related functions to avoid additional function calls.
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----------------------------------------------------------------
Alice Ryhl (16):
      rust: sync: Refactor static_lock_class!() macro
      rust: sync: Clean up LockClassKey and its docs
      rust: sync: Implement Unpin for ARef
      rust: barrier: Add __rust_helper to helpers
      rust: blk: Add __rust_helper to helpers
      rust: completion: Add __rust_helper to helpers
      rust: cpu: Add __rust_helper to helpers
      rust: processor: Add __rust_helper to helpers
      rust: rcu: Add __rust_helper to helpers
      rust: refcount: Add __rust_helper to helpers
      rust: sync: Add __rust_helper to helpers
      rust: task: Add __rust_helper to helpers
      rust: time: Add __rust_helper to helpers
      rust: wait: Add __rust_helper to helpers
      rust: helpers: Move #define __rust_helper out of atomic.c
      rust: sync: Inline various lock related methods

Boqun Feng (1):
      arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86

FUJITA Tomonori (19):
      rust: sync: set_once: Implement Send and Sync
      rust: helpers: Add i8/i16 atomic_read_acquire/atomic_set_release helpers
      rust: helpers: Add i8/i16 relaxed atomic helpers
      rust: helpers: Add i8/i16 atomic xchg helpers
      rust: helpers: Add i8/i16 atomic xchg_acquire helpers
      rust: helpers: Add i8/i16 atomic xchg_release helpers
      rust: helpers: Add i8/i16 atomic xchg_relaxed helpers
      rust: helpers: Add i8/i16 atomic try_cmpxchg helpers
      rust: helpers: Add i8/i16 atomic try_cmpxchg_acquire helpers
      rust: helpers: Add i8/i16 atomic try_cmpxchg_release helpers
      rust: helpers: Add i8/i16 atomic try_cmpxchg_relaxed helpers
      rust: sync: atomic: Prepare AtomicOps macros for i8/i16 support
      rust: sync: atomic: Add i8/i16 load and store support
      rust: sync: atomic: Add store_release/load_acquire tests
      rust: sync: atomic: Add i8/i16 xchg and cmpxchg support
      rust: sync: atomic: Add atomic bool support via i8 representation
      rust: sync: atomic: Add atomic bool tests
      rust: list: Switch to kernel::sync atomic primitives
      rust_binder: Switch to kernel::sync atomic primitives

 arch/x86/um/Kconfig                        |   1 +
 drivers/android/binder/rust_binder_main.rs |  20 ++---
 drivers/android/binder/stats.rs            |   8 +-
 drivers/android/binder/thread.rs           |  24 +++--
 drivers/android/binder/transaction.rs      |  16 ++--
 rust/helpers/atomic.c                      |   7 +-
 rust/helpers/atomic_ext.c                  | 139 +++++++++++++++++++++++++++++
 rust/helpers/barrier.c                     |   6 +-
 rust/helpers/blk.c                         |   4 +-
 rust/helpers/completion.c                  |   2 +-
 rust/helpers/cpu.c                         |   2 +-
 rust/helpers/helpers.c                     |   3 +
 rust/helpers/mutex.c                       |  13 +--
 rust/helpers/processor.c                   |   2 +-
 rust/helpers/rcu.c                         |   4 +-
 rust/helpers/refcount.c                    |  10 +--
 rust/helpers/signal.c                      |   2 +-
 rust/helpers/spinlock.c                    |  13 +--
 rust/helpers/sync.c                        |   4 +-
 rust/helpers/task.c                        |  24 ++---
 rust/helpers/time.c                        |  14 +--
 rust/helpers/wait.c                        |   2 +-
 rust/kernel/list/arc.rs                    |  14 ++-
 rust/kernel/sync.rs                        |  74 +++++++++++----
 rust/kernel/sync/aref.rs                   |   3 +
 rust/kernel/sync/atomic/internal.rs        | 114 ++++++++++++++++++-----
 rust/kernel/sync/atomic/predefine.rs       |  55 +++++++++++-
 rust/kernel/sync/lock.rs                   |   7 ++
 rust/kernel/sync/lock/global.rs            |   2 +
 rust/kernel/sync/lock/mutex.rs             |   5 ++
 rust/kernel/sync/lock/spinlock.rs          |   5 ++
 rust/kernel/sync/set_once.rs               |   8 ++
 scripts/atomic/gen-rust-atomic-helpers.sh  |   5 --
 33 files changed, 462 insertions(+), 150 deletions(-)
 create mode 100644 rust/helpers/atomic_ext.c

Re: [GIT PULL][PATCH 00/36] Rust synchronization changes for v7.0

Posted by Peter Zijlstra 3 weeks, 4 days ago

On Sun, Jan 11, 2026 at 07:57:32PM +0800, Boqun Feng wrote:
> Peter,
> 
> Please pull the following changes of Rust synchronization for 7.0 into
> tip/locking/core, you can find the details of the changes in the git tag
> message below.

Done!, Thanks!

Re: [GIT PULL][PATCH 00/36] Rust synchronization changes for v7.0

Posted by Boqun Feng 3 weeks, 4 days ago

On Sun, Jan 11, 2026 at 07:57:32PM +0800, Boqun Feng wrote:
> Peter,
> 

Kindly ping ;-)

Regards,
Boqun

> Please pull the following changes of Rust synchronization for 7.0 into
> tip/locking/core, you can find the details of the changes in the git tag
> message below.
> 
> Thanks!
> 
> Regards,
> Boqun
> 
> ----------------------------------------------------------------
> 
> The following changes since commit a45026cef17d1080c985adf28234d6c8475ad66f:
> 
>   locking/local_lock: Include more missing headers (2026-01-08 11:21:57 +0100)
> 
> are available in the Git repository at:
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git/ tags/rust-sync-7.0
> 
> for you to fetch changes up to ccf9e070116a81d29aae30db501d562c8efd1ed8:
> 
>   rust: sync: Inline various lock related methods (2026-01-10 10:53:46 +0800)
> 
> ----------------------------------------------------------------
> Rust synchronization changes for v7.0:
> 
> - Add support for Atomic<i8/i16/bool> and replace most Rust native AtomicBool
>   usages with Atomic<bool>, and further switching will require Atomic<Flag>
> - Clean up LockClassKey and improve its docs
> - Add missing Send and Sync trait impl for SetOnce
> - Make ARef Unpin as it is supposed to be
> - Add __rust_helper to a few Rust helpers as a preparation for helper LTO
> - Inline various lock related functions to avoid additional function calls.
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> ----------------------------------------------------------------
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