firewire: core: add tracepoints events for flushing of isochronous context

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.

Link: https://lore.kernel.org/r/20240623220859.851685-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

diff --git a/drivers/firewire/core-iso.c b/drivers/firewire/core-iso.c
index 49feb4c28224d4461d2f406e67da073a2b7fa486..5bad23fcce0cbb5ebcc424bd7728267afd9dd6ed 100644 (file)
--- 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 c984b7d6380f87b188a464ec3c3b02458b096578..b404e6324671c7eaf934f30b7c0c3d1bf84663c4 100644 (file)
--- 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)
+);
+
 #undef QUADLET_SIZE
 
 #endif // _FIREWIRE_TRACE_EVENT_H