+/* Get number of RX queues wanted. Return number of online CPU
+ * packages in the expectation that an IRQ balancer will spread
+ * interrupts across them. */
+static int efx_wanted_rx_queues(void)
+{
+ cpumask_t core_mask;
+ int count;
+ int cpu;
+
+ cpus_clear(core_mask);
+ count = 0;
+ for_each_online_cpu(cpu) {
+ if (!cpu_isset(cpu, core_mask)) {
+ ++count;
+ cpus_or(core_mask, core_mask,
+ topology_core_siblings(cpu));
+ }
+ }
+
+ return count;
+}
+
+/* Probe the number and type of interrupts we are able to obtain, and
+ * the resulting numbers of channels and RX queues.
+ */