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Subject[PATCH net-next 3/3] rxrpc: Trace call completion
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Date
Add a tracepoint to track rxrpc calls moving into the completed state and
to log the completion type and the recorded error value and abort code.

Signed-off-by: David Howells <dhowells@redhat.com>
---

include/trace/events/rxrpc.h | 33 +++++++++++++++++++++++++++++++++
net/rxrpc/ar-internal.h | 1 +
2 files changed, 34 insertions(+)

diff --git a/include/trace/events/rxrpc.h b/include/trace/events/rxrpc.h
index 4d2c2d35c5cb..2ea788f6f95d 100644
--- a/include/trace/events/rxrpc.h
+++ b/include/trace/events/rxrpc.h
@@ -400,6 +400,13 @@ enum rxrpc_congest_change {
EM(RXRPC_ACK_IDLE, "IDL") \
E_(RXRPC_ACK__INVALID, "-?-")

+#define rxrpc_completions \
+ EM(RXRPC_CALL_SUCCEEDED, "Succeeded") \
+ EM(RXRPC_CALL_REMOTELY_ABORTED, "RemoteAbort") \
+ EM(RXRPC_CALL_LOCALLY_ABORTED, "LocalAbort") \
+ EM(RXRPC_CALL_LOCAL_ERROR, "LocalError") \
+ E_(RXRPC_CALL_NETWORK_ERROR, "NetError")
+
/*
* Export enum symbols via userspace.
*/
@@ -624,6 +631,32 @@ TRACE_EVENT(rxrpc_abort,
__entry->abort_code, __entry->error, __entry->why)
);

+TRACE_EVENT(rxrpc_call_complete,
+ TP_PROTO(struct rxrpc_call *call),
+
+ TP_ARGS(call),
+
+ TP_STRUCT__entry(
+ __field(unsigned int, call )
+ __field(enum rxrpc_call_completion, compl )
+ __field(int, error )
+ __field(u32, abort_code )
+ ),
+
+ TP_fast_assign(
+ __entry->call = call->debug_id;
+ __entry->compl = call->completion;
+ __entry->error = call->error;
+ __entry->abort_code = call->abort_code;
+ ),
+
+ TP_printk("c=%08x %s r=%d ac=%d",
+ __entry->call,
+ __print_symbolic(__entry->compl, rxrpc_completions),
+ __entry->error,
+ __entry->abort_code)
+ );
+
TRACE_EVENT(rxrpc_transmit,
TP_PROTO(struct rxrpc_call *call, enum rxrpc_transmit_trace why),

diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 9c9817ddafc5..21cf164b6d85 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -778,6 +778,7 @@ static inline bool __rxrpc_set_call_completion(struct rxrpc_call *call,
call->error = error;
call->completion = compl,
call->state = RXRPC_CALL_COMPLETE;
+ trace_rxrpc_call_complete(call);
wake_up(&call->waitq);
return true;
}
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