firewire: core: record card index in tracepoinrts events derived from async_outbound_initiate_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/20240613131440.431766-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

Author: takaswie

drivers/firewire/core-transaction.c

@@ -398,7 +398,8 @@ void __fw_send_request(struct fw_card *card, struct fw_transaction *t, int tcode
 
 	spin_unlock_irqrestore(&card->lock, flags);
 
-	trace_async_request_outbound_initiate((uintptr_t)t, generation, speed, t->packet.header, payload,
+	trace_async_request_outbound_initiate((uintptr_t)t, card->index, generation, speed,
+					      t->packet.header, payload,
 					      tcode_is_read_request(tcode) ? 0 : length / 4);
 
 	card->driver->send_request(card, &t->packet);
@@ -879,9 +880,10 @@ void fw_send_response(struct fw_card *card,
 	// Increase the reference count so that the object is kept during in-flight.
 	fw_request_get(request);
 
-	trace_async_response_outbound_initiate((uintptr_t)request, request->response.generation,
-					       request->response.speed, request->response.header,
-					       data, data ? data_length / 4 : 0);
+	trace_async_response_outbound_initiate((uintptr_t)request, card->index,
+					       request->response.generation, request->response.speed,
+					       request->response.header, data,
+					       data ? data_length / 4 : 0);
 
 	card->driver->send_response(card, &request->response);
 }

include/trace/events/firewire.h

@@ -36,26 +36,29 @@
 #define QUADLET_SIZE	4
 
 DECLARE_EVENT_CLASS(async_outbound_initiate_template,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, header, data, data_count),
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, header, data, data_count),
 	TP_STRUCT__entry(
 		__field(u64, transaction)
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(u8, scode)
 		__array(u32, header, ASYNC_HEADER_QUADLET_COUNT)
 		__dynamic_array(u32, data, data_count)
 	),
 	TP_fast_assign(
 		__entry->transaction = transaction;
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		__entry->scode = scode;
 		memcpy(__entry->header, header, QUADLET_SIZE * ASYNC_HEADER_QUADLET_COUNT);
 		memcpy(__get_dynamic_array(data), data, __get_dynamic_array_len(data));
 	),
 	// This format is for the request subaction.
 	TP_printk(
-		"transaction=0x%llx generation=%u scode=%u dst_id=0x%04x tlabel=%u tcode=%u src_id=0x%04x offset=0x%012llx header=%s data=%s",
+		"transaction=0x%llx card_index=%u generation=%u scode=%u dst_id=0x%04x tlabel=%u tcode=%u src_id=0x%04x offset=0x%012llx header=%s data=%s",
 		__entry->transaction,
+		__entry->card_index,
 		__entry->generation,
 		__entry->scode,
 		ASYNC_HEADER_GET_DESTINATION(__entry->header),
@@ -142,8 +145,8 @@ DECLARE_EVENT_CLASS(async_inbound_template,
 );
 
 DEFINE_EVENT(async_outbound_initiate_template, async_request_outbound_initiate,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, header, data, data_count)
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, header, data, data_count)
 );
 
 DEFINE_EVENT(async_outbound_complete_template, async_request_outbound_complete,
@@ -178,11 +181,12 @@ DEFINE_EVENT_PRINT(async_inbound_template, async_request_inbound,
 );
 
 DEFINE_EVENT_PRINT(async_outbound_initiate_template, async_response_outbound_initiate,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, header, data, data_count),
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, header, data, data_count),
 	TP_printk(
-		"transaction=0x%llx generation=%u scode=%u dst_id=0x%04x tlabel=%u tcode=%u src_id=0x%04x rcode=%u header=%s data=%s",
+		"transaction=0x%llx card_index=%u generation=%u scode=%u dst_id=0x%04x tlabel=%u tcode=%u src_id=0x%04x rcode=%u header=%s data=%s",
 		__entry->transaction,
+		__entry->card_index,
 		__entry->generation,
 		__entry->scode,
 		ASYNC_HEADER_GET_DESTINATION(__entry->header),