2 files changed, 41 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 3671fdea5010..27ed10966c81 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4552,6 +4552,7 @@ S:	Maintained
 F:      drivers/devfreq/
 F:      include/linux/devfreq.h
 F:      Documentation/devicetree/bindings/devfreq/
+F:      include/trace/events/devfreq.h
 
 DEVICE FREQUENCY EVENT (DEVFREQ-EVENT)
 M:      Chanwoo Choi <cw00.choi@samsung.com>
diff --git a/include/trace/events/devfreq.h b/include/trace/events/devfreq.h
new file mode 100644
index 000000000000..cf5b8772175d
--- /dev/null
+++ b/include/trace/events/devfreq.h
@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM devfreq
+
+#if !defined(_TRACE_DEVFREQ_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_DEVFREQ_H
+
+#include <linux/devfreq.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(devfreq_monitor,
+        TP_PROTO(struct devfreq *devfreq),
+
+        TP_ARGS(devfreq),
+
+        TP_STRUCT__entry(
+                __field(unsigned long, freq)
+                __field(unsigned long, busy_time)
+                __field(unsigned long, total_time)
+                __field(unsigned int, polling_ms)
+                __string(dev_name, dev_name(&devfreq->dev))
+        ),
+
+        TP_fast_assign(
+                __entry->freq = devfreq->previous_freq;
+                __entry->busy_time = devfreq->last_status.busy_time;
+                __entry->total_time = devfreq->last_status.total_time;
+                __entry->polling_ms = devfreq->profile->polling_ms;
+                __assign_str(dev_name, dev_name(&devfreq->dev));
+        ),
+
+        TP_printk("dev_name=%s freq=%lu polling_ms=%u load=%lu",
+                __get_str(dev_name), __entry->freq, __entry->polling_ms,
+                __entry->total_time == 0 ? 0 :
+                        (100 * __entry->busy_time) / __entry->total_time)
+);
+#endif /* _TRACE_DEVFREQ_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>