linux-kernel - [PATCH 16/26] habanalabs: define traces for COMMS protocol

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Date:   Thu,  8 Dec 2022 17:13:40 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ohad Sharabi <osharabi@...ana.ai>
Subject: [PATCH 16/26] habanalabs: define traces for COMMS protocol

From: Ohad Sharabi <osharabi@...ana.ai>

As the COMMS protocol is being used more widely in our driver,
an available debug tool for the handshake will be handy.

This commit defines tracepoints to various key points of the COMMS
protocol.

Signed-off-by: Ohad Sharabi <osharabi@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 include/trace/events/habanalabs.h | 36 +++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/include/trace/events/habanalabs.h b/include/trace/events/habanalabs.h
index f05c5fa668a2..10233e13cee4 100644
--- a/include/trace/events/habanalabs.h
+++ b/include/trace/events/habanalabs.h
@@ -87,6 +87,42 @@ DEFINE_EVENT(habanalabs_dma_alloc_template, habanalabs_dma_free,
 	TP_PROTO(struct device *dev, u64 cpu_addr, u64 dma_addr, size_t size, const char *caller),
 	TP_ARGS(dev, cpu_addr, dma_addr, size, caller));
 
+DECLARE_EVENT_CLASS(habanalabs_comms_template,
+	TP_PROTO(struct device *dev, char *op_str),
+
+	TP_ARGS(dev, op_str),
+
+	TP_STRUCT__entry(
+		__string(dname, dev_name(dev))
+		__field(char *, op_str)
+	),
+
+	TP_fast_assign(
+		__assign_str(dname, dev_name(dev));
+		__entry->op_str = op_str;
+	),
+
+	TP_printk("%s: cms: %s",
+		__get_str(dname),
+		__entry->op_str)
+);
+
+DEFINE_EVENT(habanalabs_comms_template, habanalabs_comms_protocol_cmd,
+	TP_PROTO(struct device *dev, char *op_str),
+	TP_ARGS(dev, op_str));
+
+DEFINE_EVENT(habanalabs_comms_template, habanalabs_comms_send_cmd,
+	TP_PROTO(struct device *dev, char *op_str),
+	TP_ARGS(dev, op_str));
+
+DEFINE_EVENT(habanalabs_comms_template, habanalabs_comms_wait_status,
+	TP_PROTO(struct device *dev, char *op_str),
+	TP_ARGS(dev, op_str));
+
+DEFINE_EVENT(habanalabs_comms_template, habanalabs_comms_wait_status_done,
+	TP_PROTO(struct device *dev, char *op_str),
+	TP_ARGS(dev, op_str));
+
 #endif /* if !defined(_TRACE_HABANALABS_H) || defined(TRACE_HEADER_MULTI_READ) */
 
 /* This part must be outside protection */
-- 
2.25.1