firewire: core: record card index in tracepoinrts events derived from async_outbound_complete_template

The asynchronous transaction is initiated on one of 1394 OHCI controller,
however the existing tracepoints events has the lack of data about it.

This commit adds card_index member into event structure to store the index
of host controller in use, and prints it.

Link: https://lore.kernel.org/r/20240613131440.431766-2-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

Author: takaswie

drivers/firewire/core-transaction.c

@@ -174,8 +174,8 @@ static void transmit_complete_callback(struct fw_packet *packet,
 	struct fw_transaction *t =
 	    container_of(packet, struct fw_transaction, packet);
 
-	trace_async_request_outbound_complete((uintptr_t)t, packet->generation, packet->speed,
-					      status, packet->timestamp);
+	trace_async_request_outbound_complete((uintptr_t)t, card->index, packet->generation,
+					      packet->speed, status, packet->timestamp);
 
 	switch (status) {
 	case ACK_COMPLETE:
@@ -674,7 +674,7 @@ static void free_response_callback(struct fw_packet *packet,
 {
 	struct fw_request *request = container_of(packet, struct fw_request, response);
 
-	trace_async_response_outbound_complete((uintptr_t)request, packet->generation,
+	trace_async_response_outbound_complete((uintptr_t)request, card->index, packet->generation,
 					       packet->speed, status, packet->timestamp);
 
 	// Decrease the reference count since not at in-flight.

include/trace/events/firewire.h

@@ -71,25 +71,28 @@ DECLARE_EVENT_CLASS(async_outbound_initiate_template,
 
 // The value of status is one of ack codes and rcodes specific to Linux FireWire subsystem.
 DECLARE_EVENT_CLASS(async_outbound_complete_template,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
-	TP_ARGS(transaction, generation, scode, status, timestamp),
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp),
 	TP_STRUCT__entry(
 		__field(u64, transaction)
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(u8, scode)
 		__field(u8, status)
 		__field(u16, timestamp)
 	),
 	TP_fast_assign(
 		__entry->transaction = transaction;
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		__entry->scode = scode;
 		__entry->status = status;
 		__entry->timestamp = timestamp;
 	),
 	TP_printk(
-		"transaction=0x%llx generation=%u scode=%u status=%u timestamp=0x%04x",
+		"transaction=0x%llx card_index=%u generation=%u scode=%u status=%u timestamp=0x%04x",
 		__entry->transaction,
+		__entry->card_index,
 		__entry->generation,
 		__entry->scode,
 		__entry->status,
@@ -144,8 +147,8 @@ DEFINE_EVENT(async_outbound_initiate_template, async_request_outbound_initiate,
 );
 
 DEFINE_EVENT(async_outbound_complete_template, async_request_outbound_complete,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
-	TP_ARGS(transaction, generation, scode, status, timestamp)
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp)
 );
 
 DEFINE_EVENT(async_inbound_template, async_response_inbound,
@@ -194,8 +197,8 @@ DEFINE_EVENT_PRINT(async_outbound_initiate_template, async_response_outbound_ini
 );
 
 DEFINE_EVENT(async_outbound_complete_template, async_response_outbound_complete,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
-	TP_ARGS(transaction, generation, scode, status, timestamp)
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp)
 );
 
 #undef ASYNC_HEADER_GET_DESTINATION