linux/include/trace/events/thermal.h
Michele Di Giorgio d0b45880b2 thermal: trace: migrating thermal traces to use TRACE_DEFINE_ENUM() macros
Userspace tools are not aware of how to convert the enums provided by
the tracepoints to their corresponding strings.

Adding TRACE_DEFINE_ENUM() macros allows to make the enums available
to userspace to let the tools know what those enum values represent.

In particular, for thermal zone trip types what we obtained before was
something like:

kworker/1:1-460   [001]   320.372732: thermal_zone_trip:    thermal_zone=soc
				id=0 trip=1 trip_type=1

Unfortunately, userspace tools do not know how to convert enum values to
strings and as a consequence they can only forward the enum value to the
output. By using TRACE_DEFINE_ENUM() macros for thermal traces we get the
following trace line:

kworker/1:1-460   [001]   320.372732: thermal_zone_trip:    thermal_zone=soc
				id=0 trip=1 trip_type=PASSIVE

Userspace tools are now able to better understand the meaning of the trip_type
and provide the user with more readable information.

CC: Steven Rostedt <rostedt@goodmis.org>
CC: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
2016-03-15 07:51:40 +08:00

207 lines
5.3 KiB
C

#undef TRACE_SYSTEM
#define TRACE_SYSTEM thermal
#if !defined(_TRACE_THERMAL_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_THERMAL_H
#include <linux/devfreq.h>
#include <linux/thermal.h>
#include <linux/tracepoint.h>
TRACE_DEFINE_ENUM(THERMAL_TRIP_CRITICAL);
TRACE_DEFINE_ENUM(THERMAL_TRIP_HOT);
TRACE_DEFINE_ENUM(THERMAL_TRIP_PASSIVE);
TRACE_DEFINE_ENUM(THERMAL_TRIP_ACTIVE);
#define show_tzt_type(type) \
__print_symbolic(type, \
{ THERMAL_TRIP_CRITICAL, "CRITICAL"}, \
{ THERMAL_TRIP_HOT, "HOT"}, \
{ THERMAL_TRIP_PASSIVE, "PASSIVE"}, \
{ THERMAL_TRIP_ACTIVE, "ACTIVE"})
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)
);
TRACE_EVENT(cdev_update,
TP_PROTO(struct thermal_cooling_device *cdev, unsigned long target),
TP_ARGS(cdev, target),
TP_STRUCT__entry(
__string(type, cdev->type)
__field(unsigned long, target)
),
TP_fast_assign(
__assign_str(type, cdev->type);
__entry->target = target;
),
TP_printk("type=%s target=%lu", __get_str(type), __entry->target)
);
TRACE_EVENT(thermal_zone_trip,
TP_PROTO(struct thermal_zone_device *tz, int trip,
enum thermal_trip_type trip_type),
TP_ARGS(tz, trip, trip_type),
TP_STRUCT__entry(
__string(thermal_zone, tz->type)
__field(int, id)
__field(int, trip)
__field(enum thermal_trip_type, trip_type)
),
TP_fast_assign(
__assign_str(thermal_zone, tz->type);
__entry->id = tz->id;
__entry->trip = trip;
__entry->trip_type = trip_type;
),
TP_printk("thermal_zone=%s id=%d trip=%d trip_type=%s",
__get_str(thermal_zone), __entry->id, __entry->trip,
show_tzt_type(__entry->trip_type))
);
TRACE_EVENT(thermal_power_cpu_get_power,
TP_PROTO(const struct cpumask *cpus, unsigned long freq, u32 *load,
size_t load_len, u32 dynamic_power, u32 static_power),
TP_ARGS(cpus, freq, load, load_len, dynamic_power, static_power),
TP_STRUCT__entry(
__bitmask(cpumask, num_possible_cpus())
__field(unsigned long, freq )
__dynamic_array(u32, load, load_len)
__field(size_t, load_len )
__field(u32, dynamic_power )
__field(u32, static_power )
),
TP_fast_assign(
__assign_bitmask(cpumask, cpumask_bits(cpus),
num_possible_cpus());
__entry->freq = freq;
memcpy(__get_dynamic_array(load), load,
load_len * sizeof(*load));
__entry->load_len = load_len;
__entry->dynamic_power = dynamic_power;
__entry->static_power = static_power;
),
TP_printk("cpus=%s freq=%lu load={%s} dynamic_power=%d static_power=%d",
__get_bitmask(cpumask), __entry->freq,
__print_array(__get_dynamic_array(load), __entry->load_len, 4),
__entry->dynamic_power, __entry->static_power)
);
TRACE_EVENT(thermal_power_cpu_limit,
TP_PROTO(const struct cpumask *cpus, unsigned int freq,
unsigned long cdev_state, u32 power),
TP_ARGS(cpus, freq, cdev_state, power),
TP_STRUCT__entry(
__bitmask(cpumask, num_possible_cpus())
__field(unsigned int, freq )
__field(unsigned long, cdev_state)
__field(u32, power )
),
TP_fast_assign(
__assign_bitmask(cpumask, cpumask_bits(cpus),
num_possible_cpus());
__entry->freq = freq;
__entry->cdev_state = cdev_state;
__entry->power = power;
),
TP_printk("cpus=%s freq=%u cdev_state=%lu power=%u",
__get_bitmask(cpumask), __entry->freq, __entry->cdev_state,
__entry->power)
);
TRACE_EVENT(thermal_power_devfreq_get_power,
TP_PROTO(struct thermal_cooling_device *cdev,
struct devfreq_dev_status *status, unsigned long freq,
u32 dynamic_power, u32 static_power),
TP_ARGS(cdev, status, freq, dynamic_power, static_power),
TP_STRUCT__entry(
__string(type, cdev->type )
__field(unsigned long, freq )
__field(u32, load )
__field(u32, dynamic_power )
__field(u32, static_power )
),
TP_fast_assign(
__assign_str(type, cdev->type);
__entry->freq = freq;
__entry->load = (100 * status->busy_time) / status->total_time;
__entry->dynamic_power = dynamic_power;
__entry->static_power = static_power;
),
TP_printk("type=%s freq=%lu load=%u dynamic_power=%u static_power=%u",
__get_str(type), __entry->freq,
__entry->load, __entry->dynamic_power, __entry->static_power)
);
TRACE_EVENT(thermal_power_devfreq_limit,
TP_PROTO(struct thermal_cooling_device *cdev, unsigned long freq,
unsigned long cdev_state, u32 power),
TP_ARGS(cdev, freq, cdev_state, power),
TP_STRUCT__entry(
__string(type, cdev->type)
__field(unsigned int, freq )
__field(unsigned long, cdev_state)
__field(u32, power )
),
TP_fast_assign(
__assign_str(type, cdev->type);
__entry->freq = freq;
__entry->cdev_state = cdev_state;
__entry->power = power;
),
TP_printk("type=%s freq=%u cdev_state=%lu power=%u",
__get_str(type), __entry->freq, __entry->cdev_state,
__entry->power)
);
#endif /* _TRACE_THERMAL_H */
/* This part must be outside protection */
#include <trace/define_trace.h>