IB/qib: Optimize CQ callbacks

Browse source

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>

...

This commit is contained in:

Mike Marciniszyn 2013-06-04 15:05:37 -04:00 • committed by Roland Dreier

parent c804f07248

commit 85caafe307

4 changed files with 76 additions and 24 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

drivers/infiniband/hw/qib/qib.h

View file

67

drivers/infiniband/hw/qib/qib_cq.c

View file

18

drivers/infiniband/hw/qib/qib_init.c

View file

10

drivers/infiniband/hw/qib/qib_verbs.h

View file