drm/amd/display: performance profiling instrumentation

Signed-off-by: Tony Cheng <tony.cheng@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c

@@ -41,6 +41,10 @@ unsigned long long dm_get_timestamp(struct dc_context *ctx)
 	return 0;
 }
 
+void dm_perf_trace_timestamp(const char *func_name, unsigned int line)
+{
+}
+
 bool dm_write_persistent_data(struct dc_context *ctx,
 		const struct dc_sink *sink,
 		const char *module_name,

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -1047,6 +1047,8 @@ dcn10_translate_regamma_to_hw_format(const struct dc_transfer_func *output_tf,
 	if (output_tf == NULL || regamma_params == NULL || output_tf->type == TF_TYPE_BYPASS)
 		return false;
 
+	PERF_TRACE();
+
 	arr_points = regamma_params->arr_points;
 	rgb_resulted = regamma_params->rgb_resulted;
 	hw_points = 0;
@@ -1189,6 +1191,8 @@ dcn10_translate_regamma_to_hw_format(const struct dc_transfer_func *output_tf,
 
 	convert_to_custom_float(rgb_resulted, arr_points, hw_points);
 
+	PERF_TRACE();
+
 	return true;
 }
 

drivers/gpu/drm/amd/display/dc/dm_services.h

@@ -372,6 +372,13 @@ bool dm_dmcu_set_pipe(struct dc_context *ctx, unsigned int controller_id);
 
 unsigned long long dm_get_timestamp(struct dc_context *ctx);
 
+/*
+ * performance tracing
+ */
+void dm_perf_trace_timestamp(const char *func_name, unsigned int line);
+#define PERF_TRACE()	dm_perf_trace_timestamp(__func__, __LINE__)
+
+
 /*
  * Debug and verification hooks
  */