From 9876b1a4431a3f0959c70e1d817ecab6440cb2e6 Mon Sep 17 00:00:00 2001
From: Javi Merino <javi.merino@arm.com>
Date: Thu, 10 Sep 2015 18:09:31 +0100
Subject: devfreq_cooling: add trace information

Tracing is useful for debugging and performance tuning.  Add similar
traces to what's present in the cpu cooling device.

Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
---
 drivers/thermal/devfreq_cooling.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'drivers/thermal/devfreq_cooling.c')

diff --git a/drivers/thermal/devfreq_cooling.c b/drivers/thermal/devfreq_cooling.c
index a032c5d5c374..a27206815066 100644
--- a/drivers/thermal/devfreq_cooling.c
+++ b/drivers/thermal/devfreq_cooling.c
@@ -25,6 +25,8 @@
 #include <linux/pm_opp.h>
 #include <linux/thermal.h>
 
+#include <trace/events/thermal.h>
+
 static DEFINE_MUTEX(devfreq_lock);
 static DEFINE_IDR(devfreq_idr);
 
@@ -293,6 +295,9 @@ static int devfreq_cooling_get_requested_power(struct thermal_cooling_device *cd
 	/* Get static power */
 	static_power = get_static_power(dfc, freq);
 
+	trace_thermal_power_devfreq_get_power(cdev, status, freq, dyn_power,
+					      static_power);
+
 	*power = dyn_power + static_power;
 
 	return 0;
@@ -348,6 +353,7 @@ static int devfreq_cooling_power2state(struct thermal_cooling_device *cdev,
 			break;
 
 	*state = i;
+	trace_thermal_power_devfreq_limit(cdev, freq, *state, power);
 	return 0;
 }
 
-- 
cgit