[0/8] lib: cleanup bitmap-related headers

Message

Yury Norov July 1, 2022, 12:54 p.m. UTC

This series unifies declarations of bitmap-related functions and aligns
return types with values that actually returned. Also, it moves one-liner
wrappers around cpumask functions into headers, so that compiler has a
chance to optimize better.

With this series, GCC 11.2 for ARM64 with kernel v5.19-rc4:
add/remove: 15/7 grow/shrink: 461/164 up/down: 14844/-4580 (10264)

This +10K didn't surprize me because  modern compilers are more agressive
in inlining, loop unrolling, and other techniques that increase size of
the image.

Yury Norov (8):
  arm: align find_bit defs with generic kernel
  lib/bitmap: change return values to bool where appropriate
  lib/bitmap: change type of bitmap_weight to unsigned int
  cpumask: change return types to bool where appropriate
  lib/cpumask: change return types to unsigned
  lib/cpumask: move one-line wrappers around find_bit to the header
  mm: split include/linux/gfp.h
  lib/cpumask: move some one-line wrappers to header file

 Documentation/core-api/mm-api.rst |   8 +-
 MAINTAINERS                       |   1 +
 arch/arm/include/asm/bitops.h     |  20 +-
 include/linux/bitmap.h            |  10 +-
 include/linux/cpumask.h           | 125 +++++++++--
 include/linux/gfp.h               | 334 +----------------------------
 include/linux/gfp_flags.h         | 338 ++++++++++++++++++++++++++++++
 lib/bitmap.c                      |   9 +-
 lib/cpumask.c                     |  97 +--------
 tools/include/linux/bitmap.h      |  12 +-
 tools/lib/bitmap.c                |   6 +-
 11 files changed, 483 insertions(+), 477 deletions(-)
 create mode 100644 include/linux/gfp_flags.h