kvm-all: add trace events for kvm irqchip ops

These will help us monitoring irqchip route activities more easily.
Signed-off-by: NPeter Xu <peterx@redhat.com>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Reviewed-by: NMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: NMichael S. Tsirkin <mst@redhat.com>

kvm-all.c

@@ -1048,6 +1048,7 @@ void kvm_irqchip_commit_routes(KVMState *s)
     int ret;
 
     s->irq_routes->flags = 0;
+    trace_kvm_irqchip_commit_routes();
     ret = kvm_vm_ioctl(s, KVM_SET_GSI_ROUTING, s->irq_routes);
     assert(ret == 0);
 }
@@ -1271,6 +1272,8 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev)
         return -EINVAL;
     }
 
+    trace_kvm_irqchip_add_msi_route(virq);
+
     kvm_add_routing_entry(s, &kroute);
     kvm_arch_add_msi_route_post(&kroute, vector, dev);
     kvm_irqchip_commit_routes(s);
@@ -1301,6 +1304,8 @@ int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg,
         return -EINVAL;
     }
 
+    trace_kvm_irqchip_update_msi_route(virq);
+
     return kvm_update_routing_entry(s, &kroute);
 }
 

trace-events

@@ -118,6 +118,9 @@ kvm_run_exit(int cpu_index, uint32_t reason) "cpu_index %d, reason %d"
 kvm_device_ioctl(int fd, int type, void *arg) "dev fd %d, type 0x%x, arg %p"
 kvm_failed_reg_get(uint64_t id, const char *msg) "Warning: Unable to retrieve ONEREG %" PRIu64 " from KVM: %s"
 kvm_failed_reg_set(uint64_t id, const char *msg) "Warning: Unable to set ONEREG %" PRIu64 " to KVM: %s"
+kvm_irqchip_commit_routes(void) ""
+kvm_irqchip_add_msi_route(int virq) "Adding MSI route virq=%d"
+kvm_irqchip_update_msi_route(int virq) "Updating MSI route virq=%d"
 
 # TCG related tracing (mostly disabled by default)
 # cpu-exec.c