diff options
| author | Punit Agrawal <punit.agrawal@arm.com> | 2014-05-07 15:38:23 +0100 |
|---|---|---|
| committer | Jon Medhurst <tixy@linaro.org> | 2015-02-13 11:47:29 +0800 |
| commit | 7acac17a2da390030f315c3752b39ed812ffb934 (patch) | |
| tree | e645473ecdb244c797d8ece64b90eeebef46853f | |
| parent | 228dee62068faac1e331ecc8f840d55d680d0cdc (diff) | |
| download | juno-7acac17a2da390030f315c3752b39ed812ffb934.tar.gz | |
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: Punit Agrawal <punit.agrawal@arm.com>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
| -rw-r--r-- | drivers/thermal/thermal_core.c | 4 | ||||
| -rw-r--r-- | include/trace/events/thermal.h | 38 |
2 files changed, 42 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index edc0cb88f1d..b689552e26b 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -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" @@ -451,6 +454,7 @@ 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); } diff --git a/include/trace/events/thermal.h b/include/trace/events/thermal.h new file mode 100644 index 00000000000..8c5ca96eccd --- /dev/null +++ b/include/trace/events/thermal.h @@ -0,0 +1,38 @@ +#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> |