atomic infrastructure · Maintained

Maintainers

• M Will Deacon <will@kernel.org>
• M Peter Zijlstra <peterz@infradead.org>
• M Boqun Feng <boqun@kernel.org>
• R Mark Rutland <mark.rutland@arm.com>
• R Gary Guo <gary@garyguo.net>

Paths

• F Documentation/atomic_*.txt
• F arch/*/include/asm/atomic*.h
• F include/*/atomic*.h
• F include/linux/refcount.h
• F scripts/atomic/
• F rust/kernel/sync/atomic.rs
• F rust/kernel/sync/atomic/
• F rust/kernel/sync/refcount.rs

Last 30 days

Active reviewers (last 30 days)

• Alice Ryhl <aliceryhl@google.com>
  2 attestations (2 Reviewed-by) · last on 2026-05-20
• Gary Guo <gary@garyguo.net>
  2 attestations (2 Reviewed-by) · last on 2026-05-20

Recent patches

Most-recent 30 patches in this subsystem on stable (capped at 30), ordered by date desc.

• COLD21d Re: Linux 7.0.10
  2026-05-23 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.33
  2026-05-23 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD17d REVIEWED: 14 (14M) [PATCH 6.18 041/957] rust: sync: atomic: Remove bound `T: Sync` for `Atomic::from_ptr()`
  2026-05-20 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD22d REVIEWED: 14 (14M) [PATCH 7.0 0055/1146] rust: sync: atomic: Remove bound `T: Sync` for `Atomic::from_ptr()`
  2026-05-20 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.9
  2026-02-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE127d REVIEWED: 6 (5M) [PATCH 6.18 093/122] rust: sync: refcount: always inline functions using build_assert with arguments
  2026-02-04 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE127d REVIEWED: 2 (0M) [PATCH 6.18 092/122] rust: sync: atomic: Provide stub for `rusttest` 32-bit hosts
  2026-02-04 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE139d [PATCH] rust: sync: atomic: Provide stub for `rusttest` 32-bit hosts
  2026-01-23 · Miguel Ojeda <ojeda@kernel.org>
• STALE146d REVIEWED: 5 (5M) [PATCH v3 5/7] rust: sync: refcount: always inline functions using build_assert with arguments
  2025-12-08 · Alexandre Courbot <acourbot@nvidia.com>
• DORMANTno replies Re: Linux 6.6.36
  2024-06-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE720d Re: Linux 6.9.6
  2024-06-21 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE719d REVIEWED: 8 (7M) [PATCH 6.6.y] locking/atomic: scripts: fix ${atomic}_sub_and_test() kerneldoc
  2024-06-20 · Carlos Llamas <cmllamas@google.com>
• STALE719d REVIEWED: 8 (7M) FAILED: patch "[PATCH] locking/atomic: scripts: fix ${atomic}_sub_and_test()" failed to apply to 6.6-stable tree
  2024-06-18 · <gregkh@linuxfoundation.org>
• DORMANTno replies REVIEWED: 8 (7M) [tip: locking/urgent] locking/atomic: scripts: fix ${atomic}_sub_and_test() kerneldoc
  2024-06-05 · tip-bot2 for Carlos Llamas <hidden>
• STALE738d REVIEWED: 1 (0M) [PATCH v2] locking/atomic: scripts: fix ${atomic}_sub_and_test() kerneldoc
  2024-05-15 · Carlos Llamas <cmllamas@google.com>
• DORMANTno replies Re: Linux 6.5.6
  2023-10-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE982d REVIEWED: 1 (0M) [PATCH 6.5 089/321] locking/atomic: scripts: fix fallback ifdeffery
  2023-10-04 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1229d Re: Linux 6.1.9
  2023-02-01 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1230d [PATCH 6.1 302/313] Fix up more non-executable files marked executable
  2023-01-30 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.4.208
  2022-07-29 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 67/87] locking/refcount: Consolidate implementations of refcount_t
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 66/87] locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 65/87] locking/refcount: Move saturation warnings out of line
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 11 (9M) [PATCH 5.4 64/87] locking/refcount: Improve performance of generic REFCOUNT_FULL code
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 63/87] locking/refcount: Move the bulk of the REFCOUNT_FULL implementation into the <linux/refcount.h> header
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 61/87] locking/refcount: Ensure integer operands are treated as signed
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 62/87] locking/refcount: Remove unused refcount_*_checked() variants
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1416d REVIEWED: 10 (9M) [PATCH 5.4 60/87] locking/refcount: Define constants for saturation and max refcount values
  2022-07-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.16.19
  2022-04-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE1527d Re: Linux 5.17.2
  2022-04-08 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE146d REVIEWED: 5 (5M) [PATCH v3 5/7] rust: sync: refcount: always inline functions using build_assert with arguments
  2025-12-08 · Alexandre Courbot <acourbot@nvidia.com> · 1 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• DORMANTno replies Re: Linux 6.18.9
  2026-02-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>