From: Thomas Gleixner <t...@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 <t...@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