tree c17964cc02d75f2bb6f827eed9daeec719b85d17
parent c804f07248895ff9c9dccb6cda703068a0657b6c
author Mike Marciniszyn <mike.marciniszyn@intel.com> 1370372737 -0400
committer Roland Dreier <roland@purestorage.com> 1371860389 -0700

IB/qib: Optimize CQ callbacks

The current workqueue implemention has the following performance
deficiencies on QDR HCAs:

- The CQ call backs tend to run on the CPUs processing the
  receive queues
- The single thread queue isn't optimal for multiple HCAs

This patch adds a dedicated per HCA bound thread to process CQ callbacks.

Reviewed-by: Ramkrishna Vepa <ramkrishna.vepa@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>