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

The asynchronous transmission of phy packet 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/[e-mail]
Signed-off-by: Takashi Sakamoto <[e-mail]>

drivers/firewire/core-card.c

···
 	int reg = short_reset ? 5 : 1;
 	int bit = short_reset ? PHY_BUS_SHORT_RESET : PHY_BUS_RESET;
 
-	trace_bus_reset_initiate(card->generation, short_reset);
+	trace_bus_reset_initiate(card->index, card->generation, short_reset);
 
 	return card->driver->update_phy_reg(card, reg, 0, bit);
 }
 
 void fw_schedule_bus_reset(struct fw_card *card, bool delayed, bool short_reset)
 {
-	trace_bus_reset_schedule(card->generation, short_reset);
+	trace_bus_reset_schedule(card->index, card->generation, short_reset);
 
 	/* We don't try hard to sort out requests of long vs. short resets. */
 	card->br_short = short_reset;
···
 	/* Delay for 2s after last reset per IEEE 1394 clause 8.2.1. */
 	if (card->reset_jiffies != 0 &&
 	    time_before64(get_jiffies_64(), card->reset_jiffies + 2 * HZ)) {
-		trace_bus_reset_postpone(card->generation, card->br_short);
+		trace_bus_reset_postpone(card->index, card->generation, card->br_short);
 
 		if (!queue_delayed_work(fw_workqueue, &card->br_work, 2 * HZ))
 			fw_card_put(card);

include/trace/events/firewire.h

···
 );
 
 DECLARE_EVENT_CLASS(bus_reset_arrange_template,
-	TP_PROTO(unsigned int generation, bool short_reset),
-	TP_ARGS(generation, short_reset),
+	TP_PROTO(unsigned int card_index, unsigned int generation, bool short_reset),
+	TP_ARGS(card_index, generation, short_reset),
 	TP_STRUCT__entry(
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(bool, short_reset)
 	),
 	TP_fast_assign(
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		__entry->short_reset = short_reset;
 	),
 	TP_printk(
-		"generation=%u short_reset=%s",
+		"card_index=%u generation=%u short_reset=%s",
+		__entry->card_index,
 		__entry->generation,
 		__entry->short_reset ? "true" : "false"
 	)
 );
 
 DEFINE_EVENT(bus_reset_arrange_template, bus_reset_initiate,
-	TP_PROTO(unsigned int generation, bool short_reset),
-	TP_ARGS(generation, short_reset)
+	TP_PROTO(unsigned int card_index, unsigned int generation, bool short_reset),
+	TP_ARGS(card_index, generation, short_reset)
 );
 
 DEFINE_EVENT(bus_reset_arrange_template, bus_reset_schedule,
-	TP_PROTO(unsigned int generation, bool short_reset),
-	TP_ARGS(generation, short_reset)
+	TP_PROTO(unsigned int card_index, unsigned int generation, bool short_reset),
+	TP_ARGS(card_index, generation, short_reset)
 );
 
 DEFINE_EVENT(bus_reset_arrange_template, bus_reset_postpone,
-	TP_PROTO(unsigned int generation, bool short_reset),
-	TP_ARGS(generation, short_reset)
+	TP_PROTO(unsigned int card_index, unsigned int generation, bool short_reset),
+	TP_ARGS(card_index, generation, short_reset)
 );
 
 TRACE_EVENT(bus_reset_handle,