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usb: dwc3: trace: add a tracepoint for ep enable/disable

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instead of using a simple trace_printk() wrapper,
let's add an actual tracepoint and print further
details about the endpoint being operated upon.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-11-03 13:53:29 +02:00
parent 9cecca75b5
commit 2870e5013e
2 changed files with 57 additions and 4 deletions
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10
drivers/usb/dwc3/gadget.c
View file

@ -587,8 +587,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
u32 reg;
int ret;
dwc3_trace(trace_dwc3_gadget, "Enabling %s", dep->name);
if (!(dep->flags & DWC3_EP_ENABLED)) {
ret = dwc3_gadget_start_config(dwc, dep);
if (ret)
@ -617,7 +615,7 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
init_waitqueue_head(&dep->wait_end_transfer);
if (usb_endpoint_xfer_control(desc))
return 0;
goto out;
/* Initialize the TRB ring */
dep->trb_dequeue = 0;
@ -664,6 +662,10 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
WARN_ON_ONCE(!dep->resource_index);
}
out:
trace_dwc3_gadget_ep_enable(dep);
return 0;
}
@ -701,7 +703,7 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep)
struct dwc3 *dwc = dep->dwc;
u32 reg;
dwc3_trace(trace_dwc3_gadget, "Disabling %s", dep->name);
trace_dwc3_gadget_ep_disable(dep);
dwc3_remove_requests(dwc, dep);

51
drivers/usb/dwc3/trace.h
View file

@ -341,6 +341,57 @@ DEFINE_EVENT(dwc3_log_trb, dwc3_complete_trb,
TP_ARGS(dep, trb)
);
DECLARE_EVENT_CLASS(dwc3_log_ep,
TP_PROTO(struct dwc3_ep *dep),
TP_ARGS(dep),
TP_STRUCT__entry(
__dynamic_array(char, name, DWC3_MSG_MAX)
__field(unsigned, maxpacket)
__field(unsigned, maxpacket_limit)
__field(unsigned, max_streams)
__field(unsigned, maxburst)
__field(unsigned, flags)
__field(unsigned, direction)
__field(u8, trb_enqueue)
__field(u8, trb_dequeue)
),
TP_fast_assign(
snprintf(__get_str(name), DWC3_MSG_MAX, "%s", dep->name);
__entry->maxpacket = dep->endpoint.maxpacket;
__entry->maxpacket_limit = dep->endpoint.maxpacket_limit;
__entry->max_streams = dep->endpoint.max_streams;
__entry->maxburst = dep->endpoint.maxburst;
__entry->flags = dep->flags;
__entry->direction = dep->direction;
__entry->trb_enqueue = dep->trb_enqueue;
__entry->trb_dequeue = dep->trb_dequeue;
),
TP_printk("%s: mps %d/%d streams %d burst %d ring %d/%d flags %c:%c%c%c%c%c:%c:%c",
__get_str(name), __entry->maxpacket,
__entry->maxpacket_limit, __entry->max_streams,
__entry->maxburst, __entry->trb_enqueue,
__entry->trb_dequeue,
__entry->flags & DWC3_EP_ENABLED ? 'E' : 'e',
__entry->flags & DWC3_EP_STALL ? 'S' : 's',
__entry->flags & DWC3_EP_WEDGE ? 'W' : 'w',
__entry->flags & DWC3_EP_BUSY ? 'B' : 'b',
__entry->flags & DWC3_EP_PENDING_REQUEST ? 'P' : 'p',
__entry->flags & DWC3_EP_MISSED_ISOC ? 'M' : 'm',
__entry->flags & DWC3_EP_END_TRANSFER_PENDING ? 'E' : 'e',
__entry->direction ? '<' : '>'
)
);
DEFINE_EVENT(dwc3_log_ep, dwc3_gadget_ep_enable,
TP_PROTO(struct dwc3_ep *dep),
TP_ARGS(dep)
);
DEFINE_EVENT(dwc3_log_ep, dwc3_gadget_ep_disable,
TP_PROTO(struct dwc3_ep *dep),
TP_ARGS(dep)
);
#endif /* __DWC3_TRACE_H */
/* this part has to be here */