diff options
| author | Mike Marciniszyn <mike.marciniszyn@intel.com> | 2013-05-30 18:25:25 -0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-06-21 17:19:38 -0700 |
| commit | 8469ba39a6b77917e8879680aed17229bf72f263 (patch) | |
| tree | f064dfaf3387f3ed5d59d69941b90825fe628729 /drivers/infiniband/hw/qib/Kconfig | |
| parent | fedaf4ffc224a194e2d13a3ec2abe5df0bc94258 (diff) | |
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>
Diffstat (limited to 'drivers/infiniband/hw/qib/Kconfig')
| -rw-r--r-- | drivers/infiniband/hw/qib/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig index 1e603a37506..d03ca4c1ff2 100644 --- a/drivers/infiniband/hw/qib/Kconfig +++ b/drivers/infiniband/hw/qib/Kconfig @@ -5,3 +5,11 @@ config INFINIBAND_QIB This is a low-level driver for Intel PCIe QLE InfiniBand host channel adapters. This driver does not support the Intel HyperTransport card (model QHT7140). + +config INFINIBAND_QIB_DCA + bool "QIB DCA support" + depends on INFINIBAND_QIB && DCA && SMP && GENERIC_HARDIRQS && !(INFINIBAND_QIB=y && DCA=m) + default y + ---help--- + Setting this enables DCA support on some Intel chip sets + with the iba7322 HCA. |