[PATCH 1/8] device: Add irq affinity hint cpumask pointer

Christoph Hellwig
2016-04-16T01:35:56Z

From: Thomas Gleixner <tglx@linutronix.de>

This optional cpumask will be used by the irq core code to optimize interrupt
allocation and affinity setup for multiqueue devices.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/device.h | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index 002c597..0270103 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -741,6 +741,8 @@ struct device_dma_parameters {
* @msi_list: Hosts MSI descriptors
* @msi_domain: The generic MSI domain this device is using.
* @numa_node: NUMA node this device is close to.
+ * @irq_affinity: Hint for irq affinities and descriptor allocation
+ * (optional).
* @dma_mask: Dma mask (if dma'ble device).
* @coherent_dma_mask: Like dma_mask, but for alloc_coherent mapping as not all
* hardware supports 64-bit addresses for consistent allocations
@@ -813,6 +815,8 @@ struct device {
#ifdef CONFIG_NUMA
int numa_node; /* NUMA node this device is close to */
#endif
+
+ struct cpumask *irq_affinity;
u64 *dma_mask; /* dma mask (if dma'able device) */
u64 coherent_dma_mask;/* Like dma_mask, but for
alloc_coherent mappings as
--
2.1.4