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List: linux1394-devel
Subject: [PATCH 4/5] firewire: core: add tracepoint event for asynchronous inbound request
From: Takashi Sakamoto <o-takashi () sakamocchi ! jp>
Date: 2024-04-29 4:32:17
Message-ID: 20240429043218.609398-5-o-takashi () sakamocchi ! jp
[Download RAW message or body]
This commit adds an event for asynchronous inbound request.
The following example is for asynchronous block write request as IEC
61883-1 FCP request from node 0xffc1.
async_request_inbound: \
transaction=0xffff89fa08cf16c0 generation=4 scode=2 status=2 \
timestamp=0x00b3 dst_id=0xffc0 tlabel=19 tcode=1 src_id=0xffc1 \
offset=0xfffff0000d00 header={0xffc04d10,0xffc1ffff,0xf0000d00,0x80000} \
data={0x19ff08,0xffff0090}
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
drivers/firewire/core-transaction.c | 8 +++++++-
include/trace/events/firewire.h | 21 +++++++++++++++++++++
2 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/drivers/firewire/core-transaction.c \
b/drivers/firewire/core-transaction.c index 56510d305564..8c13f996a938 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -973,11 +973,13 @@ void fw_core_handle_request(struct fw_card *card, struct \
fw_packet *p) {
struct fw_request *request;
unsigned long long offset;
+ unsigned int tcode;
if (p->ack != ACK_PENDING && p->ack != ACK_COMPLETE)
return;
- if (tcode_is_link_internal(async_header_get_tcode(p->header))) {
+ tcode = async_header_get_tcode(p->header);
+ if (tcode_is_link_internal(tcode)) {
fw_cdev_handle_phy_packet(card, p);
return;
}
@@ -988,6 +990,10 @@ 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,
+ tcode_is_read_request(tcode) ? 0 : request->length / 4);
+
offset = async_header_get_offset(p->header);
if (!is_in_fcp_region(offset, request->length))
diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index 2d5f6b196a22..a30cebed119a 100644
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -153,6 +153,27 @@ DEFINE_EVENT(async_inbound_template, async_response_inbound,
TP_ARGS(transaction, 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_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", \
+ __entry->transaction, + __entry->generation,
+ __entry->scode,
+ __entry->status,
+ __entry->timestamp,
+ ASYNC_HEADER_GET_DESTINATION(__entry->header),
+ ASYNC_HEADER_GET_TLABEL(__entry->header),
+ ASYNC_HEADER_GET_TCODE(__entry->header),
+ ASYNC_HEADER_GET_SOURCE(__entry->header),
+ ASYNC_HEADER_GET_OFFSET(__entry->header),
+ __print_array(__entry->header, ASYNC_HEADER_QUADLET_COUNT, QUADLET_SIZE),
+ __print_array(__get_dynamic_array(data),
+ __get_dynamic_array_len(data) / QUADLET_SIZE, QUADLET_SIZE)
+ )
+);
+
#undef ASYNC_HEADER_GET_DESTINATION
#undef ASYNC_HEADER_GET_TLABEL
#undef ASYNC_HEADER_GET_TCODE
--
2.43.0
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