xen/events: fix binding user event channels to cpus

[mirror_ubuntu-bionic-kernel.git] / drivers / xen / events / events_base.c

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index fe1f16351f9411455b15576cdc83cb6db7d98281..8d49b91d92cd33a343eac0cb9810412cfeaab99b 100644 (file)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -1293,7 +1293,7 @@ void rebind_evtchn_irq(int evtchn, int irq)
 }
 
 /* Rebind an evtchn so that it gets delivered to a specific cpu */
-int xen_rebind_evtchn_to_cpu(int evtchn, unsigned tcpu)
+static int xen_rebind_evtchn_to_cpu(int evtchn, unsigned int tcpu)
 {
        struct evtchn_bind_vcpu bind_vcpu;
        int masked;
@@ -1327,7 +1327,6 @@ int xen_rebind_evtchn_to_cpu(int evtchn, unsigned tcpu)
 
        return 0;
 }
-EXPORT_SYMBOL_GPL(xen_rebind_evtchn_to_cpu);
 
 static int set_affinity_irq(struct irq_data *data, const struct cpumask *dest,
                            bool force)
@@ -1341,6 +1340,15 @@ static int set_affinity_irq(struct irq_data *data, const struct cpumask *dest,
        return ret;
 }
 
+/* To be called with desc->lock held. */
+int xen_set_affinity_evtchn(struct irq_desc *desc, unsigned int tcpu)
+{
+       struct irq_data *d = irq_desc_get_irq_data(desc);
+
+       return set_affinity_irq(d, cpumask_of(tcpu), false);
+}
+EXPORT_SYMBOL_GPL(xen_set_affinity_evtchn);
+
 static void enable_dynirq(struct irq_data *data)
 {
        int evtchn = evtchn_from_irq(data->irq);