linux/include/trace/events/thermal.h
Lukasz Luba 3f7ced7ac9 drivers/thermal/cpufreq_cooling : Refactor thermal_power_cpu_get_power tracing
Simplify the thermal_power_cpu_get_power trace event by removing
complicated cpumask and variable length array. Now the tools parsing trace
output don't have to hassle to get this power data. The simplified format
version uses 'policy->cpu'. Remove also the 'load' information completely
since there is very little value of it in this trace event. To get the
CPUs' load (or utilization) there are other dedicated trace hooks in the
kernel. This patch also simplifies and speeds-up the main cooling code
when that trace event is enabled.

Rename the trace event to avoid confusion of tools which parse the trace
file.

Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Link: https://lore.kernel.org/r/20220613124327.30766-3-lukasz.luba@arm.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
2022-07-28 17:29:42 +02:00

200 lines
4.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#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))
);
#ifdef CONFIG_CPU_THERMAL
TRACE_EVENT(thermal_power_cpu_get_power_simple,
TP_PROTO(int cpu, u32 power),
TP_ARGS(cpu, power),
TP_STRUCT__entry(
__field(int, cpu)
__field(u32, power)
),
TP_fast_assign(
__entry->cpu = cpu;
__entry->power = power;
),
TP_printk("cpu=%d power=%u", __entry->cpu, __entry->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)
);
#endif /* CONFIG_CPU_THERMAL */
#ifdef CONFIG_DEVFREQ_THERMAL
TRACE_EVENT(thermal_power_devfreq_get_power,
TP_PROTO(struct thermal_cooling_device *cdev,
struct devfreq_dev_status *status, unsigned long freq,
u32 power),
TP_ARGS(cdev, status, freq, power),
TP_STRUCT__entry(
__string(type, cdev->type )
__field(unsigned long, freq )
__field(u32, busy_time)
__field(u32, total_time)
__field(u32, power)
),
TP_fast_assign(
__assign_str(type, cdev->type);
__entry->freq = freq;
__entry->busy_time = status->busy_time;
__entry->total_time = status->total_time;
__entry->power = power;
),
TP_printk("type=%s freq=%lu load=%u power=%u",
__get_str(type), __entry->freq,
__entry->total_time == 0 ? 0 :
(100 * __entry->busy_time) / __entry->total_time,
__entry->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 /* CONFIG_DEVFREQ_THERMAL */
#endif /* _TRACE_THERMAL_H */
/* This part must be outside protection */
#include <trace/define_trace.h>