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usb: host: xhci: add xhci_virt_device tracer

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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>
This commit is contained in:
Felipe Balbi
2017-01-23 14:20:23 +02:00
committed by Greg Kroah-Hartman
parent d4d93e6c55
commit a711edeeb1
4 changed files with 67 additions and 0 deletions
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drivers/usb/host/xhci.c
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@@ -3848,6 +3848,7 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
le32_to_cpu(slot_ctx->dev_info) >> 27);
spin_lock_irqsave(&xhci->lock, flags);
trace_xhci_setup_device(virt_dev);
ret = xhci_queue_address_device(xhci, command, virt_dev->in_ctx->dma,
udev->slot_id, setup);
if (ret) {