libcamera: request: Add tracepoints

Add and use tracepoints in Request. Requests are core to libcamera
operation, thus detecting delays in their processing is important, and
serves as a good usage example of tracepoints.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/include/libcamera/internal/tracepoints/pipeline.tp b/include/libcamera/internal/tracepoints/pipeline.tp
new file mode 100644
index 00000000..c0a94635
--- /dev/null
+++ b/include/libcamera/internal/tracepoints/pipeline.tp
@@ -0,0 +1,25 @@
+TRACEPOINT_EVENT(
+	libcamera,
+	ipa_call_begin,
+	TP_ARGS(
+		const char *, pipe,
+		const char *, func
+	),
+	TP_FIELDS(
+		ctf_string(pipeline_name, pipe)
+		ctf_string(function_name, func)
+	)
+)
+
+TRACEPOINT_EVENT(
+	libcamera,
+	ipa_call_end,
+	TP_ARGS(
+		const char *, pipe,
+		const char *, func
+	),
+	TP_FIELDS(
+		ctf_string(pipeline_name, pipe)
+		ctf_string(function_name, func)
+	)
+)