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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: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells 2018-05-11 22:59:42 +01:00
parent 001ab5a67e
commit 3709a399c1
2 changed files with 51 additions and 3 deletions
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12
fs/afs/cmservice.c
View File

@ -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);

42
include/trace/events/afs.h
View File

@ -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 */