ionic: improve irq numa locality

Spreading the interrupts across the CPU cores is good for load
balancing, but not necessarily as good when using a CPU/core
that is not part of the NUMA local CPU.  If it can be localized,
the kernel's cpumask_local_spread() service will pick a core
that is on the node close to the PCI device.
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/pensando/ionic/ionic_lif.c

@@ -424,8 +424,9 @@ static int ionic_qcq_alloc(struct ionic_lif *lif, unsigned int type,
 		ionic_intr_mask_assert(idev->intr_ctrl, new->intr.index,
 				       IONIC_INTR_MASK_SET);
 
-		new->intr.cpu = new->intr.index % num_online_cpus();
-		if (cpu_online(new->intr.cpu))
+		new->intr.cpu = cpumask_local_spread(new->intr.index,
+						     dev_to_node(dev));
+		if (new->intr.cpu != -1)
 			cpumask_set_cpu(new->intr.cpu,
 					&new->intr.affinity_mask);
 	} else {