99f80d2f5f
Profiling shows that the key validation is susceptible to cache line trading when accessing the lkey table. Fix by separating out the read mostly fields from the write fields. In addition the shift amount, which is function of the lkey table size, is precomputed and stored with the table pointer. Since both the shift and table pointer are in the same read mostly cacheline, this saves a cache line in this hot path. Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com> |
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