bitmap api · Maintained

Maintainers

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

Paths

• F include/linux/bitfield.h
• F include/linux/bitmap-str.h
• F include/linux/bitmap.h
• F include/linux/bits.h
• F include/linux/cpumask.h
• F include/linux/cpumask_types.h
• F include/linux/find.h
• F include/linux/hw_bitfield.h
• F include/linux/nodemask.h
• F include/linux/nodemask_types.h
• F include/uapi/linux/bits.h
• F include/vdso/bits.h
• F lib/bitmap-str.c
• F lib/bitmap.c
• F lib/cpumask.c
• F lib/find_bit.c
• F lib/find_bit_benchmark.c
• F lib/test_bitmap.c
• F lib/tests/cpumask_kunit.c
• F tools/include/linux/bitfield.h
• F tools/include/linux/bitmap.h
• F tools/include/linux/bits.h
• F tools/include/linux/find.h
• F tools/include/uapi/linux/bits.h
• F tools/include/vdso/bits.h
• F tools/lib/bitmap.c
• F tools/lib/find_bit.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v5 00/24] sched: Introduce cpu_preferred_mask and steal-driven vCPU backoff
  2026-06-25 12:47 · 1 reply in 7d · Shrikanth Hegde <hidden>

Active reviewers (last 30 days)

• Yury Norov <yury.norov@gmail.com>
  3 attestations (3 Co-developed-by) · last on 2026-06-22

Recent patches

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

• HOTtoday [PATCH v5 04/24] cpumask: Introduce cpu_preferred_mask
  2026-06-25 · Shrikanth Hegde <hidden>
• DORMANTno replies [PATCH v8 2/2] lib: bitmap: optimize bitmap_find_next_zero_area_off()
  2026-06-22 · Yi Sun <hidden>
• COOLING8d [PATCH v8 1/2] lib: bitmap: add tests for bitmap_find_next_zero_area_off()
  2026-06-22 · Yi Sun <hidden>
• COOLING8d [PATCH v7 2/2] lib: bitmap: optimize bitmap_find_next_zero_area_off()
  2026-06-22 · Yi Sun <hidden>
• COOLING8d [PATCH v7 1/2] lib: bitmap: add tests for bitmap_find_next_zero_area_off()
  2026-06-22 · Yi Sun <hidden>
• COOLING11d [PATCH] bitmap: Replace __ASSEMBLY__ with __ASSEMBLER__ in header files
  2026-06-19 · Thomas Huth <hidden>
• COOLING11d [PATCH v6 2/2] lib: bitmap: optimize bitmap_find_next_zero_area_off()
  2026-06-18 · Yi Sun <hidden>
• COOLING11d [PATCH v6 1/2] lib: bitmap: add tests for bitmap_find_next_zero_area_off()
  2026-06-18 · Yi Sun <hidden>
• COOLING11d Re: [PATCH v4 04/20] cpumask: Introduce cpu_preferred_mask
  2026-06-18 · Shrikanth Hegde <hidden>
• COOLING11d [PATCH v5 2/2] lib: bitmap: optimize bitmap_find_next_zero_area_off()
  2026-06-18 · Yi Sun <hidden>
• COOLING11d [PATCH v5 1/2] lib: bitmap: add tests for bitmap_find_next_zero_area_off()
  2026-06-18 · Yi Sun <hidden>
• COOLING11d [PATCH v4 04/20] cpumask: Introduce cpu_preferred_mask
  2026-06-17 · Shrikanth Hegde <hidden>
• DORMANTno replies [PATCH] bitmap: drop bitmap_next_set_region()
  2026-06-09 · Yury Norov <yury.norov@gmail.com>
• COOLING13d [PATCH v4 1/2] lib: bitmap: reduce the number of goto again in bitmap_find_next_zero_area_off()
  2026-06-01 · Yi Sun <hidden>
• COOLING13d [PATCH v4 2/2] lib/bitmap: add tests for bitmap_find_next_zero_area_off()
  2026-06-01 · Yi Sun <hidden>
• COLD29d IN MM [PATCH] mm/nodemask: Correctly describe nodemask operation return types
  2026-05-29 · Joshua Hahn <joshua.hahnjy@gmail.com>
• WARM2d [PATCH 16/16] lib/bitmap-str: get rid of cpumap_print_to_pagebuf()
  2026-05-28 · Yury Norov <hidden>
• DORMANTno replies [PATCH] bitmap: fix find helper documentation
  2026-05-21 · Yury Norov <hidden>
• COLD28d [PATCH 2/2] bitmap: drop bitmap_print_to_pagebuf()
  2026-05-19 · Yury Norov <hidden>
• COLD28d [PATCH 1/2] cpumask: switch cpumap_print_to_pagebuf() to using scnprintf()
  2026-05-19 · Yury Norov <hidden>
• COLD42d [PATCH 3/3] lib/bitmap: use bytes_to_page_end() helper
  2026-05-17 · Thorsten Blum <thorsten.blum@linux.dev>
• COLD19d [PATCH v3 04/20] cpumask: Introduce cpu_preferred_mask
  2026-05-14 · Shrikanth Hegde <hidden>
• COLD33d [PATCH v3 1/2] lib: bitmap: add find_last_bit_from() and _find_last_bit_from()
  2026-05-14 · Yi Sun <hidden>
• COLD33d [PATCH v3 2/2] lib: bitmap: reduce the number of goto again in bitmap_find_next_zero_area_off()
  2026-05-14 · Yi Sun <hidden>
• COLD47d [PATCH v2 1/1] lib: bitmap: reduce the number of goto again in bitmap_find_next_zero_area_off()
  2026-05-14 · Yi Sun <hidden>
• COLD47d [PATCH 1/2] lib: bitmap: add find_last_bit_range() and _find_last_bit_range()
  2026-05-12 · Yi Sun <hidden>
• COLD47d [PATCH 2/2] lib: bitmap: reduce the number of goto again in bitmap_find_next_zero_area_off()
  2026-05-12 · Yi Sun <hidden>
• DORMANTno replies Re: [PATCH v2 03/17] cpumask: Introduce cpu_preferred_mask
  2026-05-05 · Shrikanth Hegde <hidden>
• STALE63d [PATCH] bitfield: wire __bf_shf to __builtin_ctzll
  2026-04-27 · Yury Norov <hidden>
• STALE61d [PATCH v2 1/9] bitfield: add FIELD_GET_SIGNED()
  2026-04-27 · Yury Norov <hidden>

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.

• STALE205d Re: Linux 6.1.159
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE200d [PATCH 4/9] bitfield: Copy #define parameters to locals
  2025-12-08 · <hidden>
• STALE200d [PATCH 6/9] bitfield: Update sanity checks
  2025-12-08 · <hidden>
• STALE200d [PATCH 5/9] bitfield: FIELD_MODIFY: Only do a single read/write on the target
  2025-12-08 · <hidden>
• STALE200d [PATCH 8/9] bitfield: Add comment block for the host/fixed endian functions
  2025-12-08 · <hidden>
• STALE200d [PATCH 7/9] bitfield: Reduce indentation
  2025-12-08 · <hidden>
• STALE200d [PATCH 9/9] bitfield: Update comments for le/be functions
  2025-12-08 · <hidden>
• STALE200d [PATCH 5/9] bitfield: FIELD_MODIFY: Only do a single read/write on the target
  2025-12-09 · <hidden>
• STALE200d [PATCH 7/9] bitfield: Reduce indentation
  2025-12-09 · <hidden>
• STALE200d [PATCH 9/9] bitfield: Update comments for le/be functions
  2025-12-09 · <hidden>