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| author | Xenia Ragiadakou <burzalodowa@gmail.com> | 2013-08-06 07:52:48 +0300 |
|---|---|---|
| committer | Sarah Sharp <sarah.a.sharp@linux.intel.com> | 2013-08-13 16:05:46 -0700 |
| commit | 63a23b9a7451660525c90b08219e14e701e294f1 (patch) | |
| tree | 7452bc6169dbb35906bfdcd7801b69d9ccc47c86 /drivers/usb/host/xhci-trace.h | |
| parent | 1d27fabec068a204186c6af10e05f23911c0c902 (diff) | |
| download | lwn-63a23b9a7451660525c90b08219e14e701e294f1.tar.gz lwn-63a23b9a7451660525c90b08219e14e701e294f1.zip | |
xhci: add xhci_cmd_completion trace event
This patch creates a new event class, called xhci_log_event,
and defines the xhci_cmd_completion trace event used for
tracing the commands issued to xHC that generate a completion
event in the event ring.
This info can be used, later, to print, in a human readable
way, the completion status and flags as well as the command's
type and fields using the trace-cmd tool and the appropriate
plugin.
Also, a tracepoint is added in handle_cmd_completion().
Signed-off-by: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Diffstat (limited to 'drivers/usb/host/xhci-trace.h')
| -rw-r--r-- | drivers/usb/host/xhci-trace.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index c653ddfc0211..d6c222916858 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -93,6 +93,36 @@ DEFINE_EVENT(xhci_log_ctx, xhci_address_ctx, TP_ARGS(xhci, ctx, ep_num) ); +DECLARE_EVENT_CLASS(xhci_log_event, + TP_PROTO(void *trb_va, struct xhci_generic_trb *ev), + TP_ARGS(trb_va, ev), + TP_STRUCT__entry( + __field(void *, va) + __field(u64, dma) + __field(u32, status) + __field(u32, flags) + __dynamic_array(__le32, trb, 4) + ), + TP_fast_assign( + __entry->va = trb_va; + __entry->dma = le64_to_cpu(((u64)ev->field[1]) << 32 | + ev->field[0]); + __entry->status = le32_to_cpu(ev->field[2]); + __entry->flags = le32_to_cpu(ev->field[3]); + memcpy(__get_dynamic_array(trb), trb_va, + sizeof(struct xhci_generic_trb)); + ), + TP_printk("\ntrb_dma=@%llx, trb_va=@%p, status=%08x, flags=%08x", + (unsigned long long) __entry->dma, __entry->va, + __entry->status, __entry->flags + ) +); + +DEFINE_EVENT(xhci_log_event, xhci_cmd_completion, + TP_PROTO(void *trb_va, struct xhci_generic_trb *ev), + TP_ARGS(trb_va, ev) +); + #endif /* __XHCI_TRACE_H */ /* this part must be outside header guard */ |