diff options
| author | Alex Elder <elder@linaro.org> | 2016-06-03 15:55:38 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@google.com> | 2016-06-03 17:03:23 -0700 |
| commit | 495787a792ac498843b25e5569597c24cd026f2b (patch) | |
| tree | 049c9b84a2d348b806e0d033df5f26320a70d481 /drivers/staging/greybus/greybus_trace.h | |
| parent | 79c8c6494220dafeaedf8dc94b50c9a787e25e5d (diff) | |
greybus: tracing: add timing traces
Bryan reports he used certain message traces to determine when time
sync messages transit the boundary between the Greybus core and the
host device. This patch adds two trace events--one a message event
for outbound messages (because it indicates its operation and its
destination), and one host device event for incoming messages
(because message information isn't available as early as desired).
These events are being created to allow the same sort of analysis
of messages without having to store extra information for every
message trace. (The next patch changes the information a message
trace records.)
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/greybus_trace.h')
| -rw-r--r-- | drivers/staging/greybus/greybus_trace.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/staging/greybus/greybus_trace.h b/drivers/staging/greybus/greybus_trace.h index a0757404dc4c..62f5803a408d 100644 --- a/drivers/staging/greybus/greybus_trace.h +++ b/drivers/staging/greybus/greybus_trace.h @@ -88,6 +88,12 @@ DEFINE_MESSAGE_EVENT(gb_message_cancel_outgoing); */ DEFINE_MESSAGE_EVENT(gb_message_cancel_incoming); +/* + * Occurs in the host driver message_send() function just prior to + * handing off the data to be processed by hardware. + */ +DEFINE_MESSAGE_EVENT(gb_message_submit); + #undef DEFINE_MESSAGE_EVENT DECLARE_EVENT_CLASS(gb_operation, @@ -471,7 +477,7 @@ DEFINE_HD_EVENT(gb_hd_release); /* * Occurs after a new host device has been added, after the - * connection to its SVC has * been enabled. + * connection to its SVC has been enabled. */ DEFINE_HD_EVENT(gb_hd_add); @@ -481,6 +487,13 @@ DEFINE_HD_EVENT(gb_hd_add); */ DEFINE_HD_EVENT(gb_hd_del); +/* + * Occurs when a host device has passed received data to the Greybus + * core, after it has been determined it is destined for a valid + * CPort. + */ +DEFINE_HD_EVENT(gb_hd_in); + #undef DEFINE_HD_EVENT #endif /* _TRACE_GREYBUS_H */ |