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| author | Alex Elder | 2016-05-24 06:05:31 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2016-05-27 07:37:19 +0200 |
| commit | 5451ea0e99cb7d58cbf90c7785cb50cc322a4434 (patch) | |
| tree | d2f234e099db0eeb91e426f8732e41776899ffb9 /drivers/staging/greybus/greybus_trace.h | |
| parent | greybus: tracing: fix hd traces (diff) | |
| download | kernel-qcow2-linux-5451ea0e99cb7d58cbf90c7785cb50cc322a4434.tar.gz kernel-qcow2-linux-5451ea0e99cb7d58cbf90c7785cb50cc322a4434.tar.xz kernel-qcow2-linux-5451ea0e99cb7d58cbf90c7785cb50cc322a4434.zip | |
greybus: tracing: add module traces
Define a new gb_module trace point event class, used to trace events
associated with the module abstraction. Define four basic trace
points for this--creation time, drop of last reference, before
registring interfaces and after de-registering them.
Signed-off-by: Alex Elder <elder@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@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 | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/drivers/staging/greybus/greybus_trace.h b/drivers/staging/greybus/greybus_trace.h index cbbc9596c78e..ecf225394b20 100644 --- a/drivers/staging/greybus/greybus_trace.h +++ b/drivers/staging/greybus/greybus_trace.h @@ -156,6 +156,59 @@ DEFINE_OPERATION_EVENT(gb_operation_put_active); #undef DEFINE_OPERATION_EVENT +DECLARE_EVENT_CLASS(gb_module, + + TP_PROTO(struct gb_module *module), + + TP_ARGS(module), + + TP_STRUCT__entry( + __field(int, hd_bus_id) + __field(u8, module_id) + __field(u8, num_interfaces) + __field(bool, disconnected) + ), + + TP_fast_assign( + __entry->hd_bus_id = module->hd->bus_id; + __entry->module_id = module->module_id; + __entry->disconnected = module->disconnected; + ), + + TP_printk("greybus: hd_bus_id=%d module_id=%hhu disconnected=%u", + __entry->hd_bus_id, __entry->module_id, __entry->disconnected) +); + +#define DEFINE_MODULE_EVENT(name) \ + DEFINE_EVENT(gb_module, name, \ + TP_PROTO(struct gb_module *module), \ + TP_ARGS(module)) + +/* + * Occurs after a new module is successfully created, before + * creating any of its interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_create); + +/* + * Occurs after the last reference to a module has been dropped. + */ +DEFINE_MODULE_EVENT(gb_module_release); + +/* + * Occurs after a module is successfully created, before registering + * any of its interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_add); + +/* + * Occurs when a module is deleted, before deregistering its + * interfaces. + */ +DEFINE_MODULE_EVENT(gb_module_del); + +#undef DEFINE_MODULE_EVENT + DECLARE_EVENT_CLASS(gb_host_device, TP_PROTO(struct gb_host_device *hd), |