From: Mike Marciniszyn <mike.marciniszyn@intel.com>
Date: Thu, 30 May 2013 22:25:25 +0000 (-0400)
Subject: IB/qib: Add DCA support
X-Git-Tag: v3.11-rc1~16^2~1^6~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8469ba39a6b77917e8879680aed17229bf72f263;p=pandora-kernel.git

IB/qib: Add DCA support

This patch adds DCA cache warming for systems that support DCA.

The code uses cpu affinity notification to react to an affinity change
from a user mode program like irqbalance and (re-)program the chip
accordingly. This notification avoids reading the current cpu on every
interrupt.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>

[ Add Kconfig dependency on SMP && GENERIC_HARDIRQS to avoid failure to
  build due to undefined struct irq_affinity_notify.  - Roland ]

Signed-off-by: Roland Dreier <roland@purestorage.com>
---

Reading git-diff-tree failed