[PATCH] firewire: core: record card index in tracepoints event for self ID sequence

[PATCH] firewire: core: record card index in tracepoints event for self ID sequence

[Takashi Sakamoto]

This patch is for for-next branch.

The selfIDComplete event occurs in the bus managed by one of 1394 OHCI
controller in Linux system, while the existing tracepoints events has
the lack of data about it to distinguish the issued hardware from the
others.

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@sakamocchi.jp>
---
 drivers/firewire/core-topology.c | 2 +-
 include/trace/events/firewire.h  | 9 ++++++---
 2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/firewire/core-topology.c b/drivers/firewire/core-topology.c
index 4a0b273392ab..a347e2f5482c 100644
--- a/drivers/firewire/core-topology.c
+++ b/drivers/firewire/core-topology.c
@@ -140,7 +140,7 @@ static struct fw_node *build_tree(struct fw_card *card, const u32 *sid, int self
 		}
 
 		port_capacity = self_id_sequence_get_port_capacity(quadlet_count);
-		trace_self_id_sequence(self_id_sequence, quadlet_count, generation);
+		trace_self_id_sequence(card->index, self_id_sequence, quadlet_count, generation);
 
 		for (port_index = 0; port_index < port_capacity; ++port_index) {
 			port_status = self_id_sequence_get_port_status(self_id_sequence, quadlet_count,
diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index 4761b700ff84..ace95d38c6ea 100644
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -370,14 +370,16 @@ void copy_port_status(u8 *port_status, unsigned int port_capacity, const u32 *se
 		      unsigned int quadlet_count);
 
 TRACE_EVENT(self_id_sequence,
-	TP_PROTO(const u32 *self_id_sequence, unsigned int quadlet_count, unsigned int generation),
-	TP_ARGS(self_id_sequence, quadlet_count, generation),
+	TP_PROTO(unsigned int card_index, const u32 *self_id_sequence, unsigned int quadlet_count, unsigned int generation),
+	TP_ARGS(card_index, self_id_sequence, quadlet_count, generation),
 	TP_STRUCT__entry(
+		__field(u8, card_index)
 		__field(u8, generation)
 		__dynamic_array(u8, port_status, self_id_sequence_get_port_capacity(quadlet_count))
 		__dynamic_array(u32, self_id_sequence, quadlet_count)
 	),
 	TP_fast_assign(
+		__entry->card_index = card_index;
 		__entry->generation = generation;
 		copy_port_status(__get_dynamic_array(port_status), __get_dynamic_array_len(port_status),
 				 self_id_sequence, quadlet_count);
@@ -385,7 +387,8 @@ TRACE_EVENT(self_id_sequence,
 					   __get_dynamic_array_len(self_id_sequence));
 	),
 	TP_printk(
-		"generation=%u phy_id=0x%02x link_active=%s gap_count=%u scode=%u contender=%s power_class=%u initiated_reset=%s port_status=%s self_id_sequence=%s",
+		"card_index=%u generation=%u phy_id=0x%02x link_active=%s gap_count=%u scode=%u contender=%s power_class=%u initiated_reset=%s port_status=%s self_id_sequence=%s",
+		__entry->card_index,
 		__entry->generation,
 		PHY_PACKET_SELF_ID_GET_PHY_ID(__get_dynamic_array(self_id_sequence)),
 		PHY_PACKET_SELF_ID_GET_LINK_ACTIVE(__get_dynamic_array(self_id_sequence)) ? "true" : "false",
-- 
2.43.0

Re: [PATCH] firewire: core: record card index in tracepoints event for self ID sequence

[Takashi Sakamoto]

On Fri, Jun 14, 2024 at 09:42:51AM +0900, Takashi Sakamoto wrote:
> This patch is for for-next branch.
> 
> The selfIDComplete event occurs in the bus managed by one of 1394 OHCI
> controller in Linux system, while the existing tracepoints events has
> the lack of data about it to distinguish the issued hardware from the
> others.
> 
> 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@sakamocchi.jp>
> ---
>  drivers/firewire/core-topology.c | 2 +-
>  include/trace/events/firewire.h  | 9 ++++++---
>  2 files changed, 7 insertions(+), 4 deletions(-)

Applied to for-next branch.


Thanks

Takashi Sakamoto