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thermal: trace: Trace when temperature is above a trip point

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Create a new event to trace when the temperature is above a trip
point. Use the trace-point when handling non-critical and critical
trip pionts.

Cc: Zhang Rui <[email protected]>
Cc: Eduardo Valentin <[email protected]>
Cc: Steven Rostedt <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Signed-off-by: Punit Agrawal <[email protected]>
Signed-off-by: Eduardo Valentin <[email protected]>
This commit is contained in:
Punit Agrawal 2014-07-29 11:50:50 +01:00 • committed by Eduardo Valentin
commit 208cd822a1
4 changed files with 44 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
drivers/thermal/fair_share.c
View file

@ -23,6 +23,7 @@
*/
#include <linux/thermal.h>
#include <trace/events/thermal.h>
#include "thermal_core.h"
@ -34,6 +35,7 @@ static int get_trip_level(struct thermal_zone_device *tz)
{
int count = 0;
unsigned long trip_temp;
enum thermal_trip_type trip_type;
if (tz->trips == 0 || !tz->ops->get_trip_temp)
return 0;
@ -43,6 +45,16 @@ static int get_trip_level(struct thermal_zone_device *tz)
if (tz->temperature < trip_temp)
break;
}
/*
* count > 0 only if temperature is greater than first trip
* point, in which case, trip_point = count - 1
*/
if (count > 0) {
tz->ops->get_trip_type(tz, count - 1, &trip_type);
trace_thermal_zone_trip(tz, count - 1, trip_type);
}
return count;
}

5
drivers/thermal/step_wise.c
View file

@ -23,6 +23,7 @@
*/
#include <linux/thermal.h>
#include <trace/events/thermal.h>
#include "thermal_core.h"
@ -129,8 +130,10 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip)
trend = get_tz_trend(tz, trip);
if (tz->temperature >= trip_temp)
if (tz->temperature >= trip_temp) {
throttle = true;
trace_thermal_zone_trip(tz, trip, trip_type);
}
dev_dbg(&tz->device, "Trip%d[type=%d,temp=%ld]:trend=%d,throttle=%d\n",
trip, trip_type, trip_temp, trend, throttle);

2
drivers/thermal/thermal_core.c
View file

@ -371,6 +371,8 @@ static void handle_critical_trips(struct thermal_zone_device *tz,
if (tz->temperature < trip_temp)
return;
trace_thermal_zone_trip(tz, trip, trip_type);
if (tz->ops->notify)
tz->ops->notify(tz, trip, trip_type);