From 5abdc2e6e12ff040a218dc807be4c4d9866b265f Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 23 Jan 2017 14:20:20 +0200 Subject: [PATCH] usb: host: xhci: add urb_enqueue/dequeue/giveback tracers These three new tracers will help us tie TRBs into URBs by *also* looking into URB lifetime. Signed-off-by: Felipe Balbi Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 1 + drivers/usb/host/xhci-trace.h | 70 +++++++++++++++++++++++++++++++++++ drivers/usb/host/xhci.c | 5 +++ 3 files changed, 76 insertions(+) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 4316273c272b..e0a49cbdd69e 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -642,6 +642,7 @@ static void xhci_giveback_urb_in_irq(struct xhci_hcd *xhci, usb_hcd_unlink_urb_from_ep(hcd, urb); spin_unlock(&xhci->lock); usb_hcd_giveback_urb(hcd, urb, status); + trace_xhci_urb_giveback(urb); spin_lock(&xhci->lock); } diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index d01524b9fb14..4bad0d6d2c8a 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -158,6 +158,76 @@ DEFINE_EVENT(xhci_log_trb, xhci_queue_trb, TP_ARGS(ring, trb) ); +DECLARE_EVENT_CLASS(xhci_log_urb, + TP_PROTO(struct urb *urb), + TP_ARGS(urb), + TP_STRUCT__entry( + __field(void *, urb) + __field(unsigned int, pipe) + __field(unsigned int, stream) + __field(int, status) + __field(unsigned int, flags) + __field(int, num_mapped_sgs) + __field(int, num_sgs) + __field(int, length) + __field(int, actual) + __field(int, epnum) + __field(int, dir_in) + __field(int, type) + ), + TP_fast_assign( + __entry->urb = urb; + __entry->pipe = urb->pipe; + __entry->stream = urb->stream_id; + __entry->status = urb->status; + __entry->flags = urb->transfer_flags; + __entry->num_mapped_sgs = urb->num_mapped_sgs; + __entry->num_sgs = urb->num_sgs; + __entry->length = urb->transfer_buffer_length; + __entry->actual = urb->actual_length; + __entry->epnum = usb_endpoint_num(&urb->ep->desc); + __entry->dir_in = usb_endpoint_dir_in(&urb->ep->desc); + __entry->type = usb_endpoint_type(&urb->ep->desc); + ), + TP_printk("ep%d%s-%s: urb %p pipe %u length %d/%d sgs %d/%d stream %d flags %08x", + __entry->epnum, __entry->dir_in ? "in" : "out", + ({ char *s; + switch (__entry->type) { + case USB_ENDPOINT_XFER_INT: + s = "intr"; + break; + case USB_ENDPOINT_XFER_CONTROL: + s = "control"; + break; + case USB_ENDPOINT_XFER_BULK: + s = "bulk"; + break; + case USB_ENDPOINT_XFER_ISOC: + s = "isoc"; + break; + default: + s = "UNKNOWN"; + } s; }), __entry->urb, __entry->pipe, __entry->actual, + __entry->length, __entry->num_mapped_sgs, + __entry->num_sgs, __entry->stream, __entry->flags + ) +); + +DEFINE_EVENT(xhci_log_urb, xhci_urb_enqueue, + TP_PROTO(struct urb *urb), + TP_ARGS(urb) +); + +DEFINE_EVENT(xhci_log_urb, xhci_urb_giveback, + TP_PROTO(struct urb *urb), + TP_ARGS(urb) +); + +DEFINE_EVENT(xhci_log_urb, xhci_urb_dequeue, + TP_PROTO(struct urb *urb), + TP_ARGS(urb) +); + #endif /* __XHCI_TRACE_H */ /* this part must be outside header guard */ diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 5d6b5a27460a..958c92bd9177 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -1383,6 +1383,8 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) urb_priv->td_cnt = 0; urb->hcpriv = urb_priv; + trace_xhci_urb_enqueue(urb); + if (usb_endpoint_xfer_control(&urb->ep->desc)) { /* Check to see if the max packet size for the default control * endpoint changed during FS device enumeration @@ -1509,6 +1511,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) xhci = hcd_to_xhci(hcd); spin_lock_irqsave(&xhci->lock, flags); + + trace_xhci_urb_dequeue(urb); + /* Make sure the URB hasn't completed or been unlinked already */ ret = usb_hcd_check_unlink_urb(hcd, urb, status); if (ret || !urb->hcpriv)