Commit 100a8fdb authored by Punit Agrawal's avatar Punit Agrawal Committed by Eduardo Valentin
Browse files

thermal: trace: Trace temperature changes 



Create a new event to trace the temperature of a thermal zone. Using
this event trace the temperature changes of the thermal zone every-time
it is updated.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: default avatarPunit Agrawal <punit.agrawal@arm.com>
Signed-off-by: default avatarEduardo Valentin <edubezval@gmail.com>
parent 47d104ba

drivers/thermal/thermal_core.c

+4 −0
Original line number Diff line number Diff line
@@ -38,6 +38,9 @@ 
#include <net/netlink.h>

#include <net/genetlink.h>



#define CREATE_TRACE_POINTS

#include <trace/events/thermal.h>



#include "thermal_core.h"

#include "thermal_hwmon.h"
@@ -463,6 +466,7 @@ static void update_temperature(struct thermal_zone_device *tz) 
	tz->temperature = temp;

	mutex_unlock(&tz->lock);



	trace_thermal_temperature(tz);

	dev_dbg(&tz->device, "last_temperature=%d, current_temperature=%d\n",

				tz->last_temperature, tz->temperature);

}

include/trace/events/thermal.h

0 → 100644
+38 −0
Original line number Diff line number Diff line 
#undef TRACE_SYSTEM

#define TRACE_SYSTEM thermal



#if !defined(_TRACE_THERMAL_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_THERMAL_H



#include <linux/thermal.h>

#include <linux/tracepoint.h>



TRACE_EVENT(thermal_temperature,



	TP_PROTO(struct thermal_zone_device *tz),



	TP_ARGS(tz),



	TP_STRUCT__entry(

		__string(thermal_zone, tz->type)

		__field(int, id)

		__field(int, temp_prev)

		__field(int, temp)

	),



	TP_fast_assign(

		__assign_str(thermal_zone, tz->type);

		__entry->id = tz->id;

		__entry->temp_prev = tz->last_temperature;

		__entry->temp = tz->temperature;

	),



	TP_printk("thermal_zone=%s id=%d temp_prev=%d temp=%d",

		__get_str(thermal_zone), __entry->id, __entry->temp_prev,

		__entry->temp)

);



#endif /* _TRACE_THERMAL_H */



/* This part must be outside protection */

#include <trace/define_trace.h>

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