mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
8469ba39a6
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>
15 lines
495 B
Text
15 lines
495 B
Text
config INFINIBAND_QIB
|
|
tristate "Intel PCIe HCA support"
|
|
depends on 64BIT
|
|
---help---
|
|
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.
|