firewire: core: record card index in tracepoinrts events derived from async_inbound_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/[email protected]
Signed-off-by: Takashi Sakamoto <[email protected]>

Author: takaswie

drivers/firewire/core-transaction.c

@@ -1009,8 +1009,8 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
 		return;
 	}
 
-	trace_async_request_inbound((uintptr_t)request, p->generation, p->speed, p->ack,
-				    p->timestamp, p->header, request->data,
+	trace_async_request_inbound((uintptr_t)request, card->index, p->generation, p->speed,
+				    p->ack, p->timestamp, p->header, request->data,
 				    tcode_is_read_request(tcode) ? 0 : request->length / 4);
 
 	offset = async_header_get_offset(p->header);
@@ -1080,8 +1080,8 @@ void fw_core_handle_response(struct fw_card *card, struct fw_packet *p)
 	}
 	spin_unlock_irqrestore(&card->lock, flags);
 
-	trace_async_response_inbound((uintptr_t)t, p->generation, p->speed, p->ack, p->timestamp,
-				     p->header, data, data_length / 4);
+	trace_async_response_inbound((uintptr_t)t, card->index, p->generation, p->speed, p->ack,
+				     p->timestamp, p->header, data, data_length / 4);
 
 	if (!t) {
  timed_out:

include/trace/events/firewire.h

@@ -105,10 +105,11 @@ DECLARE_EVENT_CLASS(async_outbound_complete_template,
 
 // The value of status is one of ack codes and rcodes specific to Linux FireWire subsystem.
 DECLARE_EVENT_CLASS(async_inbound_template,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, status, timestamp, header, data, data_count),
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp, header, data, data_count),
 	TP_STRUCT__entry(
 		__field(u64, transaction)
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(u8, scode)
 		__field(u8, status)
@@ -118,6 +119,7 @@ DECLARE_EVENT_CLASS(async_inbound_template,
 	),
 	TP_fast_assign(
 		__entry->transaction = transaction;
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		__entry->scode = scode;
 		__entry->status = status;
@@ -127,8 +129,9 @@ DECLARE_EVENT_CLASS(async_inbound_template,
 	),
 	// This format is for the response subaction.
 	TP_printk(
-		"transaction=0x%llx generation=%u scode=%u status=%u timestamp=0x%04x 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 status=%u timestamp=0x%04x 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,
 		__entry->status,
@@ -155,16 +158,17 @@ DEFINE_EVENT(async_outbound_complete_template, async_request_outbound_complete,
 );
 
 DEFINE_EVENT(async_inbound_template, async_response_inbound,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, status, timestamp, header, data, data_count)
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp, header, data, data_count)
 );
 
 DEFINE_EVENT_PRINT(async_inbound_template, async_request_inbound,
-	TP_PROTO(u64 transaction, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
-	TP_ARGS(transaction, generation, scode, status, timestamp, header, data, data_count),
+	TP_PROTO(u64 transaction, unsigned int card_index, unsigned int generation, unsigned int scode, unsigned int status, unsigned int timestamp, const u32 *header, const u32 *data, unsigned int data_count),
+	TP_ARGS(transaction, card_index, generation, scode, status, timestamp, header, data, data_count),
 	TP_printk(
-		"transaction=0x%llx generation=%u scode=%u status=%u timestamp=0x%04x 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 status=%u timestamp=0x%04x 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,
 		__entry->status,