usb: host: xhci: add xhci_virt_device tracer

Let's start tracing at least part of an xhci_virt_device lifetime. We
might want to extend this tracepoint class later, but for now it already
exposes quite a bit of valuable information.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/xhci-trace.h

@@ -158,6 +158,63 @@ DEFINE_EVENT(xhci_log_trb, xhci_queue_trb,
 	TP_ARGS(ring, trb)
 );
 
+DECLARE_EVENT_CLASS(xhci_log_virt_dev,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev),
+	TP_STRUCT__entry(
+		__field(void *, vdev)
+		__field(unsigned long long, out_ctx)
+		__field(unsigned long long, in_ctx)
+		__field(int, devnum)
+		__field(int, state)
+		__field(int, speed)
+		__field(u8, portnum)
+		__field(u8, level)
+		__field(int, slot_id)
+	),
+	TP_fast_assign(
+		__entry->vdev = vdev;
+		__entry->in_ctx = (unsigned long long) vdev->in_ctx->dma;
+		__entry->out_ctx = (unsigned long long) vdev->out_ctx->dma;
+		__entry->devnum = vdev->udev->devnum;
+		__entry->state = vdev->udev->state;
+		__entry->speed = vdev->udev->speed;
+		__entry->portnum = vdev->udev->portnum;
+		__entry->level = vdev->udev->level;
+		__entry->slot_id = vdev->udev->slot_id;
+	),
+	TP_printk("vdev %p ctx %llx | %llx num %d state %d speed %d port %d level %d slot %d",
+		__entry->vdev, __entry->in_ctx, __entry->out_ctx,
+		__entry->devnum, __entry->state, __entry->speed,
+		__entry->portnum, __entry->level, __entry->slot_id
+	)
+);
+
+DEFINE_EVENT(xhci_log_virt_dev, xhci_alloc_virt_device,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(xhci_log_virt_dev, xhci_free_virt_device,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(xhci_log_virt_dev, xhci_setup_device,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(xhci_log_virt_dev, xhci_setup_addressable_virt_device,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev)
+);
+
+DEFINE_EVENT(xhci_log_virt_dev, xhci_stop_device,
+	TP_PROTO(struct xhci_virt_device *vdev),
+	TP_ARGS(vdev)
+);
+
 DECLARE_EVENT_CLASS(xhci_log_urb,
 	TP_PROTO(struct urb *urb),
 	TP_ARGS(urb),