From: Noah Klayman <noah.klayman@xxxxxxxxx>
The Intel HDaudio controller relies on a single interrupt line which
wire-ORs multiple interrupt sources, such as stream, IPC, SoundWire and
wakes. This patch adds the ability to trace each event occurrence.
Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Signed-off-by: Noah Klayman <noah.klayman@xxxxxxxxx>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
include/trace/events/sof_intel.h | 34 ++++++++++++++++++++++++++++++++
sound/soc/sof/intel/hda.c | 19 ++++++++++++++----
2 files changed, 49 insertions(+), 4 deletions(-)
create mode 100644 include/trace/events/sof_intel.h
diff --git a/include/trace/events/sof_intel.h b/include/trace/events/sof_intel.h
new file mode 100644
index 0000000000000..37a9b92d494ef
--- /dev/null
+++ b/include/trace/events/sof_intel.h
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright(c) 2022 Intel Corporation. All rights reserved.
+ *
+ * Author: Noah Klayman <noah.klayman@xxxxxxxxx>
+ */
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM sof_intel
+
+#if !defined(_TRACE_SOF_INTEL_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_SOF_INTEL_H
+#include <linux/tracepoint.h>
+#include "../../../sound/soc/sof/sof-audio.h"
+
+TRACE_EVENT(sof_intel_hda_irq,
+ TP_PROTO(struct snd_sof_dev *sdev, char *source),
+ TP_ARGS(sdev, source),
+ TP_STRUCT__entry(
+ __string(device_name, dev_name(sdev->dev))
+ __string(source, source)
+ ),
+ TP_fast_assign(
+ __assign_str(device_name, dev_name(sdev->dev));
+ __assign_str(source, source);
+ ),
+ TP_printk("device_name=%s source=%s",
+ __get_str(device_name), __get_str(source))
+);
+
+#endif /* _TRACE_SOF_INTEL_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c
index dfb3b424fb5e3..eec54c8bb0e9a 100644
--- a/sound/soc/sof/intel/hda.c
+++ b/sound/soc/sof/intel/hda.c
@@ -31,6 +31,9 @@
#include "../ops.h"
#include "hda.h"
+#define CREATE_TRACE_POINTS
+#include <trace/events/sof_intel.h>
+
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
#include <sound/soc-acpi-intel-match.h>
#endif
@@ -954,17 +957,25 @@ static irqreturn_t hda_dsp_interrupt_thread(int irq, void *context)
struct sof_intel_hda_dev *hdev = sdev->pdata->hw_pdata;
/* deal with streams and controller first */
- if (hda_dsp_check_stream_irq(sdev))
+ if (hda_dsp_check_stream_irq(sdev)) {
+ trace_sof_intel_hda_irq(sdev, "stream");
hda_dsp_stream_threaded_handler(irq, sdev);
+ }
- if (hda_check_ipc_irq(sdev))
+ if (hda_check_ipc_irq(sdev)) {
+ trace_sof_intel_hda_irq(sdev, "ipc");
sof_ops(sdev)->irq_thread(irq, sdev);
+ }
- if (hda_dsp_check_sdw_irq(sdev))
+ if (hda_dsp_check_sdw_irq(sdev)) {
+ trace_sof_intel_hda_irq(sdev, "sdw");
hda_dsp_sdw_thread(irq, hdev->sdw);
+ }
- if (hda_sdw_check_wakeen_irq(sdev))
+ if (hda_sdw_check_wakeen_irq(sdev)) {
+ trace_sof_intel_hda_irq(sdev, "wakeen");
hda_sdw_process_wakeen(sdev);
+ }
hda_check_for_state_change(sdev);
--
2.34.1
