bitops api · Maintained

Maintainers

• M Yury Norov <yury.norov@gmail.com>
• R Rasmus Villemoes <linux@rasmusvillemoes.dk>

Paths

• F arch/*/include/asm/bitops.h
• F arch/*/include/asm/bitops_32.h
• F arch/*/include/asm/bitops_64.h
• F arch/*/lib/bitops.c
• F include/asm-generic/bitops
• F include/asm-generic/bitops.h
• F include/linux/bitops.h
• F include/linux/bitrev.h
• F include/linux/count_zeros.h
• F lib/bitrev.c
• F lib/hweight.c
• F lib/test_bitops.c
• F lib/tests/bitops_kunit.c
• F tools/*/bitops*

Last 30 days

Recent patches

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

• COLD25d REVIEWED: 1 (0M) [PATCH v2 3/5] bitops: Define generic___bitrev8/16/32 for reuse
  2026-05-06 · Yury Norov <hidden>
• COLD25d [PATCH v2 2/5] lib/bitrev: Introduce GENERIC_BITREVERSE
  2026-05-06 · Yury Norov <hidden>
• COLD25d [PATCH 5/6] lib: compile generic bitrev.c conditionally on GENERIC_BITREVERSE
  2026-04-30 · Yury Norov <hidden>
• COLD25d REVIEWED: 1 (0M) [PATCH 3/6] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-30 · Yury Norov <hidden>
• COLD25d [PATCH 2/6] lib/bitrev: Introduce GENERIC_BITREVERSE and cleanup Kconfig
  2026-04-30 · Yury Norov <hidden>
• STALE81d [PATCH v5 1/3] lib/bitrev: Introduce GENERIC_BITREVERSE and cleanup Kconfig
  2026-04-21 · Jinjie Ruan <hidden>
• STALE81d REVIEWED: 1 (0M) [PATCH v5 2/3] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-21 · Jinjie Ruan <hidden>
• STALE91d REVIEWED: 1 (0M) [PATCH v4 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-20 · Jinjie Ruan <hidden>
• STALE92d REVIEWED: 1 (0M) [PATCH v3 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-17 · Jinjie Ruan <hidden>
• STALE94d [PATCH v2 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-15 · Jinjie Ruan <hidden>
• STALE275d LANDED [PATCH 02/17] bitops: Add __attribute_const__ to generic ffs()-family implementations
  2025-08-04 · Kees Cook <kees@kernel.org>
• STALE382d Re: [PATCH 2/2] bitops: rotate: Add riscv implementation using Zbb extension
  2025-06-30 · Yury Norov <yury.norov@gmail.com>
• STALE382d [PATCH 1/2] bitops: generic rotate
  2025-06-20 · <hidden>
• STALE808d [PATCH] bitops: Change function return types from long to int
  2024-04-20 · Thorsten Blum <hidden>
• STALE1295d REVIEWED: 5 (5M) [PATCH v5 6/9] bitops: let optimize out non-atomic bitops on compile-time constants
  2022-06-24 · Alexander Lobakin <hidden>
• STALE1295d REVIEWED: 12 (12M) [PATCH v5 5/9] bitops: wrap non-atomic bitops with a transparent macro
  2022-06-24 · Alexander Lobakin <hidden>
• STALE1295d REVIEWED: 22 (22M) [PATCH v5 3/9] bitops: unify non-atomic bitops prototypes across architectures
  2022-06-24 · Alexander Lobakin <hidden>
• STALE1295d REVIEWED: 12 (12M) [PATCH v5 4/9] bitops: define const_*() versions of the non-atomics
  2022-06-24 · Alexander Lobakin <hidden>
• STALE1489d REVIEWED: 12 (12M) [PATCH v4 5/8] bitops: wrap non-atomic bitops with a transparent macro
  2022-06-21 · Alexander Lobakin <hidden>
• STALE1489d REVIEWED: 5 (5M) [PATCH v4 6/8] bitops: let optimize out non-atomic bitops on compile-time constants
  2022-06-21 · Alexander Lobakin <hidden>
• STALE1489d REVIEWED: 22 (22M) [PATCH v4 3/8] bitops: unify non-atomic bitops prototypes across architectures
  2022-06-21 · Alexander Lobakin <hidden>
• STALE1489d REVIEWED: 12 (12M) [PATCH v4 4/8] bitops: define const_*() versions of the non-atomics
  2022-06-21 · Alexander Lobakin <hidden>
• STALE1476d REVIEWED: 15 (15M) [PATCH v3 3/7] bitops: unify non-atomic bitops prototypes across architectures
  2022-06-17 · Alexander Lobakin <hidden>
• STALE1476d [PATCH v3 4/7] bitops: define const_*() versions of the non-atomics
  2022-06-17 · Alexander Lobakin <hidden>
• STALE1476d [PATCH v3 5/7] bitops: wrap non-atomic bitops with a transparent macro
  2022-06-17 · Alexander Lobakin <hidden>
• STALE1476d [PATCH v3 6/7] bitops: let optimize out non-atomic bitops on compile-time constants
  2022-06-17 · Alexander Lobakin <hidden>
• STALE1496d [PATCH v2 6/6] bitops: let optimize out non-atomic bitops on compile-time constants
  2022-06-10 · Alexander Lobakin <hidden>
• STALE1496d REVIEWED: 15 (15M) [PATCH v2 3/6] bitops: unify non-atomic bitops prototypes across architectures
  2022-06-10 · Alexander Lobakin <hidden>
• STALE1496d [PATCH v2 5/6] bitops: wrap non-atomic bitops with a transparent macro
  2022-06-10 · Alexander Lobakin <hidden>
• STALE1496d [PATCH v2 4/6] bitops: define const_*() versions of the non-atomics
  2022-06-10 · Alexander Lobakin <hidden>

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.

• COLD25d REVIEWED: 1 (0M) [PATCH v2 3/5] bitops: Define generic___bitrev8/16/32 for reuse
  2026-05-06 · Yury Norov <hidden> · 1 Reviewed-by