IB/rdmavt: Use per-CPU reference count for MRs

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Having per-CPU reference count for each MR prevents
cache-line bouncing across the system. Thus, it
prevents bottlenecks. Use per-CPU reference counts
per MR.

The per-CPU reference count for FMRs is used in
atomic mode to allow accurate testing of the busy
state. Other MR types run in per-CPU mode MR until
they're freed.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-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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Sebastian Sanchez 2017-02-08 05:26:31 -08:00 • committed by Doug Ledford

parent f3e862cb68

commit 338adfdddf

2 changed files with 43 additions and 26 deletions

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59

drivers/infiniband/sw/rdmavt/mr.c

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10

include/rdma/rdmavt_mr.h

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