52e8f6a331
Add bit_ffs_area_at and bit_ffc_area_at functions for searching a bit string for a sequence of contiguous set or unset bits of at least the specified size. The bit_ffc_area function will be used by the Intel ice driver for implementing resource assignment logic using a bitstring to represent whether or not a given index has been assigned or is currently free. The bit_ffs_area, bit_ffc_area_at and bit_ffs_area_at functions are implemented for completeness. I'd like to add further test cases for the new functions, but I'm not really sure how to add them easily. The new functions depend on specific sequences of bits being set, while the bitstring tests appear to run for varying bit sizes. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Submitted by: Jacob Keller <jacob.e.keller@intel.com> Reviewed by: asomers@, erj@ MFC after: 1 week Sponsored by: Intel Corporation Differential Revision: https://reviews.freebsd.org/D22400 |
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