From: Mike Marciniszyn <mike.marciniszyn@intel.com>
Date: Tue, 4 Jun 2013 19:05:37 +0000 (-0400)
Subject: IB/qib: Optimize CQ callbacks
X-Git-Tag: v3.11-rc1~16^2~1^6~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=85caafe307a06e4f9993c8f3c994a07374c07831;p=pandora-kernel.git

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>
---

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