linux-kernel - [PATCH 4/8] firewire: core: record card index in async_phy_outbound

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Date: Thu, 13 Jun 2024 22:14:36 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: linux1394-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 4/8] firewire: core: record card index in async_phy_outbound_initiate tracepoints event

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.

Signed-off-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
---
 drivers/firewire/core-cdev.c        | 4 ++--
 drivers/firewire/core-transaction.c | 2 +-
 include/trace/events/firewire.h     | 9 ++++++---
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 55993c9e0b90..ff8739f96af5 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -1659,8 +1659,8 @@ static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg)
 		memcpy(pp->data, a->data, sizeof(a->data));
 	}
 
-	trace_async_phy_outbound_initiate((uintptr_t)&e->p, e->p.generation, e->p.header[1],
-					  e->p.header[2]);
+	trace_async_phy_outbound_initiate((uintptr_t)&e->p, card->index, e->p.generation,
+					  e->p.header[1], e->p.header[2]);
 
 	card->driver->send_request(card, &e->p);
 
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index 3503c238f8ae..e522dc3d9897 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -504,7 +504,7 @@ void fw_send_phy_config(struct fw_card *card,
 	phy_config_packet.generation = generation;
 	reinit_completion(&phy_config_done);
 
-	trace_async_phy_outbound_initiate((uintptr_t)&phy_config_packet,
+	trace_async_phy_outbound_initiate((uintptr_t)&phy_config_packet, card->index,
 					  phy_config_packet.generation, phy_config_packet.header[1],
 					  phy_config_packet.header[2]);
 
diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index b72f613cfa02..a59dc26b2a53 100644
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -217,23 +217,26 @@ DEFINE_EVENT(async_outbound_complete_template, async_response_outbound_complete,
 #undef ASYNC_HEADER_GET_RCODE
 
 TRACE_EVENT(async_phy_outbound_initiate,
-	TP_PROTO(u64 packet, unsigned int generation, u32 first_quadlet, u32 second_quadlet),
-	TP_ARGS(packet, generation, first_quadlet, second_quadlet),
+	TP_PROTO(u64 packet, unsigned int card_index, unsigned int generation, u32 first_quadlet, u32 second_quadlet),
+	TP_ARGS(packet, card_index, generation, first_quadlet, second_quadlet),
 	TP_STRUCT__entry(
 		__field(u64, packet)
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(u32, first_quadlet)
 		__field(u32, second_quadlet)
 	),
 	TP_fast_assign(
 		__entry->packet = packet;
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		__entry->first_quadlet = first_quadlet;
 		__entry->second_quadlet = second_quadlet
 	),
 	TP_printk(
-		"packet=0x%llx generation=%u first_quadlet=0x%08x second_quadlet=0x%08x",
+		"packet=0x%llx card_index=%u generation=%u first_quadlet=0x%08x second_quadlet=0x%08x",
 		__entry->packet,
+		__entry->card_index,
 		__entry->generation,
 		__entry->first_quadlet,
 		__entry->second_quadlet
-- 
2.43.0