xen/events/fifo: Handle linked events when closing a port

[deliverable/linux.git] / drivers / xen / events / events_base.c

diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 70fba973a107165c2c29b2104d8f4d438faddc2b..1495eccb161762f482db77121f5102eb1caf5ff9 100644 (file)
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -39,8 +39,8 @@
 #include <asm/irq.h>
 #include <asm/idle.h>
 #include <asm/io_apic.h>
-#include <asm/xen/page.h>
 #include <asm/xen/pci.h>
+#include <xen/page.h>
 #endif
 #include <asm/sync_bitops.h>
 #include <asm/xen/hypercall.h>
@@ -452,10 +452,12 @@ static void xen_free_irq(unsigned irq)
        irq_free_desc(irq);
 }
 
-static void xen_evtchn_close(unsigned int port)
+static void xen_evtchn_close(unsigned int port, unsigned int cpu)
 {
        struct evtchn_close close;
 
+       xen_evtchn_op_close(port, cpu);
+
        close.port = port;
        if (HYPERVISOR_event_channel_op(EVTCHNOP_close, &close) != 0)
                BUG();
@@ -529,8 +531,8 @@ static unsigned int __startup_pirq(unsigned int irq)
        if (rc)
                goto err;
 
-       bind_evtchn_to_cpu(evtchn, 0);
        info->evtchn = evtchn;
+       bind_evtchn_to_cpu(evtchn, 0);
 
        rc = xen_evtchn_port_setup(info);
        if (rc)
@@ -544,7 +546,7 @@ out:
 
 err:
        pr_err("irq%d: Failed to set port to irq mapping (%d)\n", irq, rc);
-       xen_evtchn_close(evtchn);
+       xen_evtchn_close(evtchn, NR_CPUS);
        return 0;
 }
 
@@ -565,7 +567,7 @@ static void shutdown_pirq(struct irq_data *data)
                return;
 
        mask_evtchn(evtchn);
-       xen_evtchn_close(evtchn);
+       xen_evtchn_close(evtchn, cpu_from_evtchn(evtchn));
        xen_irq_info_cleanup(info);
 }
 
@@ -609,7 +611,7 @@ static void __unbind_from_irq(unsigned int irq)
        if (VALID_EVTCHN(evtchn)) {
                unsigned int cpu = cpu_from_irq(irq);
 
-               xen_evtchn_close(evtchn);
+               xen_evtchn_close(evtchn, cpu);
 
                switch (type_from_irq(irq)) {
                case IRQT_VIRQ:
@@ -957,7 +959,7 @@ unsigned xen_evtchn_nr_channels(void)
 }
 EXPORT_SYMBOL_GPL(xen_evtchn_nr_channels);
 
-int bind_virq_to_irq(unsigned int virq, unsigned int cpu)
+int bind_virq_to_irq(unsigned int virq, unsigned int cpu, bool percpu)
 {
        struct evtchn_bind_virq bind_virq;
        int evtchn, irq, ret;
@@ -971,8 +973,12 @@ int bind_virq_to_irq(unsigned int virq, unsigned int cpu)
                if (irq < 0)
                        goto out;
 
-               irq_set_chip_and_handler_name(irq, &xen_percpu_chip,
-                                             handle_percpu_irq, "virq");
+               if (percpu)
+                       irq_set_chip_and_handler_name(irq, &xen_percpu_chip,
+                                                     handle_percpu_irq, "virq");
+               else
+                       irq_set_chip_and_handler_name(irq, &xen_dynamic_chip,
+                                                     handle_edge_irq, "virq");
 
                bind_virq.virq = virq;
                bind_virq.vcpu = cpu;
@@ -1062,7 +1068,7 @@ int bind_virq_to_irqhandler(unsigned int virq, unsigned int cpu,
 {
        int irq, retval;
 
-       irq = bind_virq_to_irq(virq, cpu);
+       irq = bind_virq_to_irq(virq, cpu, irqflags & IRQF_PERCPU);
        if (irq < 0)
                return irq;
        retval = request_irq(irq, handler, irqflags, devname, dev_id);
@@ -1279,8 +1285,9 @@ void rebind_evtchn_irq(int evtchn, int irq)
 
        mutex_unlock(&irq_mapping_update_lock);
 
-       /* new event channels are always bound to cpu 0 */
-       irq_set_affinity(irq, cpumask_of(0));
+        bind_evtchn_to_cpu(evtchn, info->cpu);
+       /* This will be deferred until interrupt is processed */
+       irq_set_affinity(irq, cpumask_of(info->cpu));
 
        /* Unmask the event channel. */
        enable_irq(irq);