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

Most active threads (last 7 days)

• HOTtoday [PATCH 0/4] tracing: add ref_trace_final_put tracing
  2026-07-05 01:21 · 1 reply in 7d · Eugene Mavick via B4 Relay <devnull+m.mavick.dev@kernel.org>

Recent patches

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

• HOTtoday [PATCH 2/4] refcount: add ref_trace_final_put tracepoint
  2026-07-05 · Eugene Mavick via B4 Relay <devnull+m.mavick.dev@kernel.org>
• COLD29d [PATCH v4 1/2] rust: sync: atomic: add atomic_per_byte_memcpy
  2026-06-05 · Andreas Hindborg <a.hindborg@kernel.org>
• STALE136d [PATCH v3] rust: page: add byte-wise atomic memory copy methods
  2026-02-13 · Andreas Hindborg <a.hindborg@kernel.org>
• STALE136d [PATCH v2] rust: page: add byte-wise atomic memory copy methods
  2026-02-12 · Andreas Hindborg <a.hindborg@kernel.org>
• STALE158d [PATCH v5 09/36] compiler-context-analysis: Change __cond_acquires to take return value
  2025-12-19 · Marco Elver <elver@google.com>
• STALE178d [PATCH 2/4] rust: helpers: #define __rust_helper
  2025-12-02 · Alice Ryhl <aliceryhl@google.com>
• STALE197d [PATCH v4 09/35] compiler-context-analysis: Change __cond_acquires to take return value
  2025-11-20 · Marco Elver <elver@google.com>
• STALE232d [PATCH v3 09/35] compiler-capability-analysis: Change __cond_acquires to take return value
  2025-09-18 · Marco Elver <elver@google.com>
• STALE460d [RFC PATCH V3 29/43] rv64ilp32_abi: locking/atomic: Use BITS_PER_LONG for scripts
  2025-03-25 · guoren@kernel.org
• STALE498d [PATCH v10 11/18] refcount: introduce __refcount_{add|inc}_not_zero_limited_acquire
  2025-02-13 · Suren Baghdasaryan <surenb@google.com>
• STALE498d [PATCH v10 10/18] refcount: provide ops for cases when object's memory can be reused
  2025-02-13 · Suren Baghdasaryan <surenb@google.com>
• STALE506d [PATCH 1/1] refcount: provide ops for cases when object's memory can be reused
  2025-02-06 · Suren Baghdasaryan <surenb@google.com>
• STALE506d Re: [PATCH] refcount: Strengthen inc_not_zero()
  2025-01-17 · Matthew Wilcox <willy@infradead.org>
• STALE506d [PATCH] refcount: Strengthen inc_not_zero()
  2025-01-15 · Peter Zijlstra <peterz@infradead.org>
• STALE506d [PATCH v9 10/17] refcount: introduce __refcount_{add|inc}_not_zero_limited
  2025-01-11 · Suren Baghdasaryan <surenb@google.com>
• STALE536d [PATCH v8 10/16] refcount: introduce __refcount_{add|inc}_not_zero_limited
  2025-01-09 · Suren Baghdasaryan <surenb@google.com>
• STALE452d [PATCH v7 11/17] refcount: introduce __refcount_{add|inc}_not_zero_limited
  2024-12-26 · Suren Baghdasaryan <surenb@google.com>
• STALE555d [PATCH v6 09/16] refcount: introduce __refcount_{add|inc}_not_zero_limited
  2024-12-16 · Suren Baghdasaryan <surenb@google.com>
• STALE848d [PATCH 39/50] refcount: Split out refcount_types.h
  2023-12-16 · Kent Overstreet <kent.overstreet@linux.dev>
• STALE1671d [PATCH v3 16/25] locking/atomics, kcsan: Add instrumentation for barriers
  2021-11-30 · Marco Elver <elver@google.com>
• STALE1678d [PATCH v2 16/23] locking/atomics, kcsan: Add instrumentation for barriers
  2021-11-18 · Marco Elver <elver@google.com>
• STALE1696d [PATCH -rcu/kcsan 16/23] locking/atomics, kcsan: Add instrumentation for barriers
  2021-10-05 · Marco Elver <elver@google.com>
• STALE1779d Re: [PATCH] mm/rmap: Convert from atomic_t to refcount_t on anon_vma->refcount
  2021-08-20 · Peter Zijlstra <peterz@infradead.org>
• STALE1779d Re: [PATCH] mm/rmap: Convert from atomic_t to refcount_t on anon_vma->refcount
  2021-08-19 · Peter Zijlstra <peterz@infradead.org>
• STALE2069d [RFC PATCH resend 2/6] refcount: Move refcount_t definition into linux/types.h
  2020-10-16 · Jann Horn <jannh@google.com>
• STALE2088d [RFC PATCH 2/6] refcount: Move refcount_t definition into linux/types.h
  2020-10-16 · Jann Horn <jannh@google.com>
• STALE2363d REVIEWED: 15 (15M) [PATCH v4 09/10] locking/atomics, kcsan: Add KCSAN instrumentation
  2019-11-14 · Marco Elver <elver@google.com>
• STALE2424d REVIEWED: 7 (7M) [PATCH v3 8/9] locking/atomics, kcsan: Add KCSAN instrumentation
  2019-11-04 · Marco Elver <elver@google.com>
• STALE2445d [PATCH v2 7/8] locking/atomics, kcsan: Add KCSAN instrumentation
  2019-10-17 · Marco Elver <elver@google.com>
• STALE2452d [PATCH 7/8] locking/atomics, kcsan: Add KCSAN instrumentation
  2019-10-16 · Marco Elver <elver@google.com>