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Commit 0e65bae2 authored by Ira Weiny's avatar Ira Weiny Committed by Jason Gunthorpe
Browse files

IB/MAD: Add agent trace points 



Trace agent details when agents are [un]registered.  In addition, report
agent details on send/recv.

Reviewed-by: default avatar"Ruhl, Michael J" <michael.j.ruhl@intel.com>
Reviewed-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 821bf1de

drivers/infiniband/core/mad.c

+4 −0
Original line number Diff line number Diff line
@@ -467,6 +467,7 @@ struct ib_mad_agent *ib_register_mad_agent(struct ib_device *device, 
	}

	spin_unlock_irq(&port_priv->reg_lock);



	trace_ib_mad_create_agent(mad_agent_priv);

	return &mad_agent_priv->agent;

error6:

	spin_unlock_irq(&port_priv->reg_lock);
@@ -622,6 +623,7 @@ static void unregister_mad_agent(struct ib_mad_agent_private *mad_agent_priv) 
	struct ib_mad_port_private *port_priv;



	/* Note that we could still be handling received MADs */

	trace_ib_mad_unregister_agent(mad_agent_priv);



	/*

	 * Canceling all sends results in dropping received response
@@ -2354,6 +2356,7 @@ static void ib_mad_recv_done(struct ib_cq *cq, struct ib_wc *wc) 


	mad_agent = find_mad_agent(port_priv, (const struct ib_mad_hdr *)recv->mad);

	if (mad_agent) {

		trace_ib_mad_recv_done_agent(mad_agent);

		ib_mad_complete_recv(mad_agent, &recv->header.recv_wc);

		/*

		 * recv is freed up in error cases in ib_mad_complete_recv
@@ -2518,6 +2521,7 @@ static void ib_mad_send_done(struct ib_cq *cq, struct ib_wc *wc) 
	send_queue = mad_list->mad_queue;

	qp_info = send_queue->qp_info;



	trace_ib_mad_send_done_agent(mad_send_wr->mad_agent_priv);

	trace_ib_mad_send_done_handler(mad_send_wr, wc);



retry:

include/trace/events/ib_mad.h

+46 −0
Original line number Diff line number Diff line
@@ -248,6 +248,52 @@ TRACE_EVENT(ib_mad_recv_done_handler, 
	)

);



DECLARE_EVENT_CLASS(ib_mad_agent_template,

	TP_PROTO(struct ib_mad_agent_private *agent),

	TP_ARGS(agent),



	TP_STRUCT__entry(

		__field(u32,            dev_index)

		__field(u32,            hi_tid)

		__field(u8,             port_num)

		__field(u8,             mgmt_class)

		__field(u8,             mgmt_class_version)

	),



	TP_fast_assign(

		__entry->dev_index = agent->agent.device->index;

		__entry->port_num = agent->agent.port_num;

		__entry->hi_tid = agent->agent.hi_tid;



		if (agent->reg_req) {

			__entry->mgmt_class = agent->reg_req->mgmt_class;

			__entry->mgmt_class_version =

				agent->reg_req->mgmt_class_version;

		} else {

			__entry->mgmt_class = 0;

			__entry->mgmt_class_version = 0;

		}

	),



	TP_printk("%d:%d mad agent : hi_tid 0x%08x class 0x%02x class_ver 0x%02x",

		__entry->dev_index, __entry->port_num,

		__entry->hi_tid, __entry->mgmt_class,

		__entry->mgmt_class_version

	)

);

DEFINE_EVENT(ib_mad_agent_template, ib_mad_recv_done_agent,

	TP_PROTO(struct ib_mad_agent_private *agent),

	TP_ARGS(agent));

DEFINE_EVENT(ib_mad_agent_template, ib_mad_send_done_agent,

	TP_PROTO(struct ib_mad_agent_private *agent),

	TP_ARGS(agent));

DEFINE_EVENT(ib_mad_agent_template, ib_mad_create_agent,

	TP_PROTO(struct ib_mad_agent_private *agent),

	TP_ARGS(agent));

DEFINE_EVENT(ib_mad_agent_template, ib_mad_unregister_agent,

	TP_PROTO(struct ib_mad_agent_private *agent),

	TP_ARGS(agent));





#endif /* _TRACE_IB_MAD_H */