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Commit 4f9c5c0b authored by Alex Elder's avatar Alex Elder Committed by Greg Kroah-Hartman
Browse files

greybus: tracing: define bundle traces 



Define a new gb_bundle trace point event class, used to trace events
associated with the bundle abstraction.  Define four basic trace
points for this--creation time, drop of last reference, before
adding it to its interface and when removed when its interface
is destroyed.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Reviewed-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 6879dbf1

drivers/staging/greybus/bundle.c

+9 −0
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 
 */



#include "greybus.h"

#include "greybus_trace.h"



static ssize_t bundle_class_show(struct device *dev,

				 struct device_attribute *attr, char *buf)
@@ -82,6 +83,8 @@ static void gb_bundle_release(struct device *dev) 
{

	struct gb_bundle *bundle = to_gb_bundle(dev);



	trace_gb_bundle_release(bundle);



	kfree(bundle->state);

	kfree(bundle->cport_desc);

	kfree(bundle);
@@ -136,6 +139,8 @@ struct gb_bundle *gb_bundle_create(struct gb_interface *intf, u8 bundle_id, 


	list_add(&bundle->links, &intf->bundles);



	trace_gb_bundle_create(bundle);



	return bundle;

}
@@ -149,6 +154,8 @@ int gb_bundle_add(struct gb_bundle *bundle) 
		return ret;

	}



	trace_gb_bundle_add(bundle);



	return 0;

}
@@ -157,6 +164,8 @@ int gb_bundle_add(struct gb_bundle *bundle) 
 */

void gb_bundle_destroy(struct gb_bundle *bundle)

{

	trace_gb_bundle_destroy(bundle);



	if (device_is_registered(&bundle->dev))

		device_del(&bundle->dev);

drivers/staging/greybus/greybus_trace.h

+56 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 


struct gb_message;

struct gb_operation;

struct gb_bundle;

struct gb_host_device;



#define gb_bundle_name(message)						\
@@ -161,6 +162,61 @@ DEFINE_OPERATION_EVENT(gb_operation_put_active); 


#undef DEFINE_OPERATION_EVENT



DECLARE_EVENT_CLASS(gb_bundle,



	TP_PROTO(struct gb_bundle *bundle),



	TP_ARGS(bundle),



	TP_STRUCT__entry(

		__field(u8, intf_id)

		__field(u8, id)

		__field(u8, class)

		__field(size_t, num_cports)

	),



	TP_fast_assign(

		__entry->intf_id = bundle->intf->interface_id;

		__entry->id = bundle->id;

		__entry->class = bundle->class;

		__entry->num_cports = bundle->num_cports;

	),



	TP_printk("intf_id=0x%02x id=%02x class=0x%02x num_cports=%zu",

		  __entry->intf_id, __entry->id, __entry->class,

		  __entry->num_cports)

);



#define DEFINE_BUNDLE_EVENT(name)					\

		DEFINE_EVENT(gb_bundle, name,			\

				TP_PROTO(struct gb_bundle *bundle), \

				TP_ARGS(bundle))



/*

 * Occurs after a new bundle is successfully created.

 */

DEFINE_BUNDLE_EVENT(gb_bundle_create);



/*

 * Occurs when the last reference to a bundle has been dropped,

 * before its resources are freed.

 */

DEFINE_BUNDLE_EVENT(gb_bundle_release);



/*

 * Occurs when a bundle is added to an interface when the interface

 * is enabled.

 */

DEFINE_BUNDLE_EVENT(gb_bundle_add);



/*

 * Occurs when a registered bundle gets destroyed, normally at the

 * time an interface is disabled.

 */

DEFINE_BUNDLE_EVENT(gb_bundle_destroy);



#undef DEFINE_BUNDLE_EVENT



DECLARE_EVENT_CLASS(gb_interface,



	TP_PROTO(struct gb_interface *intf),