[PATCH 4/7] firewire: core: add tracepoints events for flushing of isochronous context

Takashi Sakamoto
2024-06-23T22:09:12Z

It is helpful to trace the flushing of isochronous context when the core
function is requested them by both in-kernel unit drivers and userspace
applications.

This commit adds some tracepoints events for the aim.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
drivers/firewire/core-iso.c | 4 ++++
include/trace/events/firewire.h | 36 +++++++++++++++++++++++++++++++++
2 files changed, 40 insertions(+)

diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c
index 49feb4c28224..5bad23fcce0c 100644
--- a/drivers/firewire/core-iso.c
+++ b/drivers/firewire/core-iso.c
@@ -197,6 +197,10 @@ EXPORT_SYMBOL(fw_iso_context_queue);

void fw_iso_context_queue_flush(struct fw_iso_context *ctx)
{
+ trace_isoc_outbound_flush(ctx);
+ trace_isoc_inbound_single_flush(ctx);
+ trace_isoc_inbound_multiple_flush(ctx);
+
ctx->card->driver->flush_queue_iso(ctx);
}
EXPORT_SYMBOL(fw_iso_context_queue_flush);
diff --git a/include/trace/events/firewire.h b/include/trace/events/firewire.h
index c984b7d6380f..b404e6324671 100644
--- a/include/trace/events/firewire.h
+++ b/include/trace/events/firewire.h
@@ -670,6 +670,42 @@ DEFINE_EVENT_CONDITION(isoc_stop_template, isoc_inbound_multiple_stop,
TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
);

+DECLARE_EVENT_CLASS(isoc_flush_template,
+ TP_PROTO(const struct fw_iso_context *ctx),
+ TP_ARGS(ctx),
+ TP_STRUCT__entry(
+ __field(u64, context)
+ __field(u8, card_index)
+ ),
+ TP_fast_assign(
+ __entry->context = (uintptr_t)ctx;
+ __entry->card_index = ctx->card->index;
+ ),
+ TP_printk(
+ "context=0x%llx card_index=%u",
+ __entry->context,
+ __entry->card_index
+ )
+);
+
+DEFINE_EVENT_CONDITION(isoc_flush_template, isoc_outbound_flush,
+ TP_PROTO(const struct fw_iso_context *ctx),
+ TP_ARGS(ctx),
+ TP_CONDITION(ctx->type == FW_ISO_CONTEXT_TRANSMIT)
+);
+
+DEFINE_EVENT_CONDITION(isoc_flush_template, isoc_inbound_single_flush,
+ TP_PROTO(const struct fw_iso_context *ctx),
+ TP_ARGS(ctx),
+ TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE)
+);
+
+DEFINE_EVENT_CONDITION(isoc_flush_template, isoc_inbound_multiple_flush,
+ TP_PROTO(const struct fw_iso_context *ctx),
+ TP_ARGS(ctx),
+ TP_CONDITION(ctx->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)