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 14 patches in this subsystem on linux-riscv, ordered by date desc.

• STALE68d REVIEWED: 1 (0M) [PATCH v2 3/5] bitops: Define generic___bitrev8/16/32 for reuse
  2026-05-06 · Yury Norov <hidden>
• STALE68d [PATCH v2 2/5] lib/bitrev: Introduce GENERIC_BITREVERSE
  2026-05-06 · Yury Norov <hidden>
• STALE68d [PATCH 5/6] lib: compile generic bitrev.c conditionally on GENERIC_BITREVERSE
  2026-04-30 · Yury Norov <hidden>
• STALE68d REVIEWED: 1 (0M) [PATCH 3/6] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-30 · Yury Norov <hidden>
• STALE68d [PATCH 2/6] lib/bitrev: Introduce GENERIC_BITREVERSE and cleanup Kconfig
  2026-04-30 · Yury Norov <hidden>
• STALE125d [PATCH v5 1/3] lib/bitrev: Introduce GENERIC_BITREVERSE and cleanup Kconfig
  2026-04-21 · Jinjie Ruan <hidden>
• STALE125d REVIEWED: 1 (0M) [PATCH v5 2/3] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-21 · Jinjie Ruan <hidden>
• STALE135d REVIEWED: 1 (0M) [PATCH v4 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-20 · Jinjie Ruan <hidden>
• STALE135d REVIEWED: 1 (0M) [PATCH v3 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-17 · Jinjie Ruan <hidden>
• STALE138d [PATCH v2 1/2] bitops: Define generic __bitrev8/16/32 for reuse
  2026-04-15 · Jinjie Ruan <hidden>
• STALE140d [PATCH] arch/riscv: Add bitrev.h file to support rev8 and brev8
  2026-03-11 · Jinjie Ruan <hidden>
• STALE318d LANDED [PATCH 02/17] bitops: Add __attribute_const__ to generic ffs()-family implementations
  2025-08-04 · Kees Cook <kees@kernel.org>
• STALE426d Re: [PATCH 2/2] bitops: rotate: Add riscv implementation using Zbb extension
  2025-06-30 · Yury Norov <yury.norov@gmail.com>
• STALE426d [PATCH 1/2] bitops: generic rotate
  2025-06-20 · <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.

• STALE68d REVIEWED: 1 (0M) [PATCH v2 3/5] bitops: Define generic___bitrev8/16/32 for reuse
  2026-05-06 · Yury Norov <hidden> · 1 Reviewed-by