Justin Hibbits e44ed9d3d4 powerpc/atomic: Follow recommendations on atomic primitive comparisons
Both IBM and Freescale programming examples presume the cmpset operands will
favor equal, and pessimize the non-equal case instead.  Do the same for
atomic_cmpset_* and atomic_fcmpset_*.  This slightly pessimizes the failure
case, in favor of the success case.

MFC after:	3 weeks
2019-09-25 01:39:58 +00:00
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