Currently the function open-codes the missing bitmap_weight_from() with
a for-loop, which is known to be less effective. Add the helper and
switch topo_unit_count() to using it.

Yury Norov (NVIDIA) (2):
  bitmap: add bitmap_weight_from()
  topology: use bitmap_weight_from()

 arch/x86/kernel/cpu/topology.c |  8 ++------
 include/linux/bitmap.h         | 25 +++++++++++++++++++++++++
 lib/bitmap.c                   | 28 ++++++++++++++++++++++++++++
 lib/test_bitmap.c              | 29 +++++++++++++++++++++++++++++
 4 files changed, 84 insertions(+), 6 deletions(-)

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2.43.0