linux-kernel - [PATCH 6/8] firewire: core: record card index in async_phy

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Message-ID: <20240613131440.431766-7-o-takashi@sakamocchi.jp>
Date: Thu, 13 Jun 2024 22:14:38 +0900
From: Takashi Sakamoto <o-takashi@...amocchi.jp>
To: linux1394-devel@...ts.sourceforge.net
Cc: linux-kernel@...r.kernel.org
Subject: [PATCH 6/8] firewire: core: record card index in async_phy_inbound tracepoints event

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.

Signed-off-by: Takashi Sakamoto <o-takashi@...amocchi.jp>
---
 drivers/firewire/core-transaction.c | 2 +-
 include/trace/events/firewire.h     | 8 +++++---
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index bd5a467cfd60..76ab6a209768 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -997,7 +997,7 @@ void fw_core_handle_request(struct fw_card *card, struct fw_packet *p)
 
 	tcode = async_header_get_tcode(p->header);
 	if (tcode_is_link_internal(tcode)) {
-		trace_async_phy_inbound((uintptr_t)p, p->generation, p->ack, p->timestamp,
+		trace_async_phy_inbound((uintptr_t)p, card->index, p->generation, p->ack, p->timestamp,
 					 p->header[1], p->header[2]);
 		fw_cdev_handle_phy_packet(card, p);
 		return;
diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index 61c7a2461fbc..e5524fc71880 100644
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -271,10 +271,11 @@ TRACE_EVENT(async_phy_outbound_complete,
 );
 
 TRACE_EVENT(async_phy_inbound,
-	TP_PROTO(u64 packet, unsigned int generation, unsigned int status, unsigned int timestamp, u32 first_quadlet, u32 second_quadlet),
-	TP_ARGS(packet, generation, status, timestamp, first_quadlet, second_quadlet),
+	TP_PROTO(u64 packet, unsigned int card_index, unsigned int generation, unsigned int status, unsigned int timestamp, u32 first_quadlet, u32 second_quadlet),
+	TP_ARGS(packet, card_index, generation, status, timestamp, first_quadlet, second_quadlet),
 	TP_STRUCT__entry(
 		__field(u64, packet)
+		__field(u8, card_index)
 		__field(u8, generation)
 		__field(u8, status)
 		__field(u16, timestamp)
@@ -290,8 +291,9 @@ TRACE_EVENT(async_phy_inbound,
 		__entry->second_quadlet = second_quadlet
 	),
 	TP_printk(
-		"packet=0x%llx generation=%u status=%u timestamp=0x%04x first_quadlet=0x%08x second_quadlet=0x%08x",
+		"packet=0x%llx card_index=%u generation=%u status=%u timestamp=0x%04x first_quadlet=0x%08x second_quadlet=0x%08x",
 		__entry->packet,
+		__entry->card_index,
 		__entry->generation,
 		__entry->status,
 		__entry->timestamp,
-- 
2.43.0