Commit 3709a399 authored by David Howells's avatar David Howells
Browse files

afs: Add a tracepoint to record callbacks from unlisted servers 



Add a tracepoint to record callbacks from servers for which we don't have a
record.

Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
parent 001ab5a6

fs/afs/cmservice.c

+9 −3
Original line number Diff line number Diff line
@@ -287,8 +287,10 @@ static int afs_deliver_cb_callback(struct afs_call *call) 
	 * vnodes to operate upon */

	rxrpc_kernel_get_peer(call->net->socket, call->rxcall, &srx);

	server = afs_find_server(call->net, &srx);

	if (!server)

	if (!server) {

		trace_afs_cm_no_server(call, &srx);

		return -ENOTCONN;

	}

	call->cm_server = server;



	return afs_queue_call_work(call);
@@ -329,8 +331,10 @@ static int afs_deliver_cb_init_call_back_state(struct afs_call *call) 
	/* we'll need the file server record as that tells us which set of

	 * vnodes to operate upon */

	server = afs_find_server(call->net, &srx);

	if (!server)

	if (!server) {

		trace_afs_cm_no_server(call, &srx);

		return -ENOTCONN;

	}

	call->cm_server = server;



	return afs_queue_call_work(call);
@@ -400,8 +404,10 @@ static int afs_deliver_cb_init_call_back_state3(struct afs_call *call) 
	rcu_read_lock();

	server = afs_find_server_by_uuid(call->net, call->request);

	rcu_read_unlock();

	if (!server)

	if (!server) {

		trace_afs_cm_no_server_u(call, call->request);

		return -ENOTCONN;

	}

	call->cm_server = server;



	return afs_queue_call_work(call);

include/trace/events/afs.h

+42 −0
Original line number Diff line number Diff line
@@ -575,6 +575,48 @@ TRACE_EVENT(afs_protocol_error, 
		      __entry->call, __entry->error, __entry->where)

	    );



TRACE_EVENT(afs_cm_no_server,

	    TP_PROTO(struct afs_call *call, struct sockaddr_rxrpc *srx),



	    TP_ARGS(call, srx),



	    TP_STRUCT__entry(

		    __field(unsigned int,			call	)

		    __field(unsigned int,			op_id	)

		    __field_struct(struct sockaddr_rxrpc,	srx	)

			     ),



	    TP_fast_assign(

		    __entry->call = call->debug_id;

		    __entry->op_id = call->operation_ID;

		    memcpy(&__entry->srx, srx, sizeof(__entry->srx));

			   ),



	    TP_printk("c=%08x op=%u %pISpc",

		      __entry->call, __entry->op_id, &__entry->srx.transport)

	    );



TRACE_EVENT(afs_cm_no_server_u,

	    TP_PROTO(struct afs_call *call, const uuid_t *uuid),



	    TP_ARGS(call, uuid),



	    TP_STRUCT__entry(

		    __field(unsigned int,			call	)

		    __field(unsigned int,			op_id	)

		    __field_struct(uuid_t,			uuid	)

			     ),



	    TP_fast_assign(

		    __entry->call = call->debug_id;

		    __entry->op_id = call->operation_ID;

		    memcpy(&__entry->uuid, uuid, sizeof(__entry->uuid));

			   ),



	    TP_printk("c=%08x op=%u %pU",

		      __entry->call, __entry->op_id, &__entry->uuid)

	    );



#endif /* _TRACE_AFS_H */



/* This part must be outside protection */