forked from luck/tmp_suning_uos_patched
thermal: add trace events to the power allocator governor
Add trace events for the power allocator governor and the power actor interface of the cpu cooling device. Cc: Zhang Rui <rui.zhang@intel.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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@ -31,6 +31,8 @@
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#include <linux/cpu.h>
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#include <linux/cpu_cooling.h>
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#include <trace/events/thermal.h>
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/*
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* Cooling state <-> CPUFreq frequency
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*
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@ -588,12 +590,20 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
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u32 *power)
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{
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unsigned long freq;
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int cpu, ret;
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int i = 0, cpu, ret;
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u32 static_power, dynamic_power, total_load = 0;
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struct cpufreq_cooling_device *cpufreq_device = cdev->devdata;
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u32 *load_cpu = NULL;
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freq = cpufreq_quick_get(cpumask_any(&cpufreq_device->allowed_cpus));
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if (trace_thermal_power_cpu_get_power_enabled()) {
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u32 ncpus = cpumask_weight(&cpufreq_device->allowed_cpus);
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load_cpu = devm_kcalloc(&cdev->device, ncpus, sizeof(*load_cpu),
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GFP_KERNEL);
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}
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for_each_cpu(cpu, &cpufreq_device->allowed_cpus) {
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u32 load;
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@ -603,14 +613,29 @@ static int cpufreq_get_requested_power(struct thermal_cooling_device *cdev,
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load = 0;
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total_load += load;
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if (trace_thermal_power_cpu_limit_enabled() && load_cpu)
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load_cpu[i] = load;
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i++;
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}
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cpufreq_device->last_load = total_load;
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dynamic_power = get_dynamic_power(cpufreq_device, freq);
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ret = get_static_power(cpufreq_device, tz, freq, &static_power);
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if (ret)
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if (ret) {
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if (load_cpu)
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devm_kfree(&cdev->device, load_cpu);
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return ret;
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}
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if (load_cpu) {
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trace_thermal_power_cpu_get_power(
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&cpufreq_device->allowed_cpus,
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freq, load_cpu, i, dynamic_power, static_power);
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devm_kfree(&cdev->device, load_cpu);
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}
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*power = static_power + dynamic_power;
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return 0;
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@ -718,6 +743,8 @@ static int cpufreq_power2state(struct thermal_cooling_device *cdev,
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return -EINVAL;
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}
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trace_thermal_power_cpu_limit(&cpufreq_device->allowed_cpus,
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target_freq, *state, power);
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return 0;
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}
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@ -19,6 +19,9 @@
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#include <linux/slab.h>
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#include <linux/thermal.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/thermal_power_allocator.h>
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#include "thermal_core.h"
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#define FRAC_BITS 10
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@ -138,7 +141,14 @@ static u32 pid_controller(struct thermal_zone_device *tz,
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/* feed-forward the known sustainable dissipatable power */
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power_range = tz->tzp->sustainable_power + frac_to_int(power_range);
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return clamp(power_range, (s64)0, (s64)max_allocatable_power);
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power_range = clamp(power_range, (s64)0, (s64)max_allocatable_power);
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trace_thermal_power_allocator_pid(tz, frac_to_int(err),
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frac_to_int(params->err_integral),
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frac_to_int(p), frac_to_int(i),
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frac_to_int(d), power_range);
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return power_range;
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}
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/**
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@ -219,7 +229,7 @@ static int allocate_power(struct thermal_zone_device *tz,
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struct power_allocator_params *params = tz->governor_data;
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u32 *req_power, *max_power, *granted_power, *extra_actor_power;
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u32 total_req_power, max_allocatable_power;
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u32 power_range;
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u32 total_granted_power, power_range;
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int i, num_actors, total_weight, ret = 0;
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int trip_max_desired_temperature = params->trip_max_desired_temperature;
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@ -295,6 +305,7 @@ static int allocate_power(struct thermal_zone_device *tz,
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divvy_up_power(req_power, max_power, num_actors, total_req_power,
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power_range, granted_power, extra_actor_power);
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total_granted_power = 0;
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i = 0;
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list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
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if (instance->trip != trip_max_desired_temperature)
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@ -305,10 +316,17 @@ static int allocate_power(struct thermal_zone_device *tz,
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power_actor_set_power(instance->cdev, instance,
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granted_power[i]);
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total_granted_power += granted_power[i];
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i++;
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}
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trace_thermal_power_allocator(tz, req_power, total_req_power,
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granted_power, total_granted_power,
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num_actors, power_range,
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max_allocatable_power, current_temp,
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(s32)control_temp - (s32)current_temp);
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devm_kfree(&tz->device, req_power);
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unlock:
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mutex_unlock(&tz->lock);
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@ -77,6 +77,64 @@ TRACE_EVENT(thermal_zone_trip,
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__entry->trip_type)
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);
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TRACE_EVENT(thermal_power_cpu_get_power,
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TP_PROTO(const struct cpumask *cpus, unsigned long freq, u32 *load,
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size_t load_len, u32 dynamic_power, u32 static_power),
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TP_ARGS(cpus, freq, load, load_len, dynamic_power, static_power),
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TP_STRUCT__entry(
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__bitmask(cpumask, num_possible_cpus())
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__field(unsigned long, freq )
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__dynamic_array(u32, load, load_len)
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__field(size_t, load_len )
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__field(u32, dynamic_power )
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__field(u32, static_power )
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),
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TP_fast_assign(
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__assign_bitmask(cpumask, cpumask_bits(cpus),
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num_possible_cpus());
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__entry->freq = freq;
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memcpy(__get_dynamic_array(load), load,
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load_len * sizeof(*load));
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__entry->load_len = load_len;
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__entry->dynamic_power = dynamic_power;
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__entry->static_power = static_power;
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),
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TP_printk("cpus=%s freq=%lu load={%s} dynamic_power=%d static_power=%d",
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__get_bitmask(cpumask), __entry->freq,
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__print_array(__get_dynamic_array(load), __entry->load_len, 4),
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__entry->dynamic_power, __entry->static_power)
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);
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TRACE_EVENT(thermal_power_cpu_limit,
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TP_PROTO(const struct cpumask *cpus, unsigned int freq,
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unsigned long cdev_state, u32 power),
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TP_ARGS(cpus, freq, cdev_state, power),
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TP_STRUCT__entry(
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__bitmask(cpumask, num_possible_cpus())
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__field(unsigned int, freq )
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__field(unsigned long, cdev_state)
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__field(u32, power )
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),
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TP_fast_assign(
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__assign_bitmask(cpumask, cpumask_bits(cpus),
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num_possible_cpus());
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__entry->freq = freq;
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__entry->cdev_state = cdev_state;
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__entry->power = power;
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),
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TP_printk("cpus=%s freq=%u cdev_state=%lu power=%u",
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__get_bitmask(cpumask), __entry->freq, __entry->cdev_state,
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__entry->power)
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);
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#endif /* _TRACE_THERMAL_H */
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/* This part must be outside protection */
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87
include/trace/events/thermal_power_allocator.h
Normal file
87
include/trace/events/thermal_power_allocator.h
Normal file
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@ -0,0 +1,87 @@
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM thermal_power_allocator
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#if !defined(_TRACE_THERMAL_POWER_ALLOCATOR_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_THERMAL_POWER_ALLOCATOR_H
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#include <linux/tracepoint.h>
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TRACE_EVENT(thermal_power_allocator,
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TP_PROTO(struct thermal_zone_device *tz, u32 *req_power,
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u32 total_req_power, u32 *granted_power,
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u32 total_granted_power, size_t num_actors,
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u32 power_range, u32 max_allocatable_power,
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unsigned long current_temp, s32 delta_temp),
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TP_ARGS(tz, req_power, total_req_power, granted_power,
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total_granted_power, num_actors, power_range,
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max_allocatable_power, current_temp, delta_temp),
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TP_STRUCT__entry(
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__field(int, tz_id )
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__dynamic_array(u32, req_power, num_actors )
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__field(u32, total_req_power )
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__dynamic_array(u32, granted_power, num_actors)
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__field(u32, total_granted_power )
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__field(size_t, num_actors )
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__field(u32, power_range )
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__field(u32, max_allocatable_power )
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__field(unsigned long, current_temp )
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__field(s32, delta_temp )
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),
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TP_fast_assign(
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__entry->tz_id = tz->id;
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memcpy(__get_dynamic_array(req_power), req_power,
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num_actors * sizeof(*req_power));
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__entry->total_req_power = total_req_power;
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memcpy(__get_dynamic_array(granted_power), granted_power,
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num_actors * sizeof(*granted_power));
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__entry->total_granted_power = total_granted_power;
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__entry->num_actors = num_actors;
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__entry->power_range = power_range;
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__entry->max_allocatable_power = max_allocatable_power;
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__entry->current_temp = current_temp;
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__entry->delta_temp = delta_temp;
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),
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TP_printk("thermal_zone_id=%d req_power={%s} total_req_power=%u granted_power={%s} total_granted_power=%u power_range=%u max_allocatable_power=%u current_temperature=%lu delta_temperature=%d",
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__entry->tz_id,
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__print_array(__get_dynamic_array(req_power),
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__entry->num_actors, 4),
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__entry->total_req_power,
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__print_array(__get_dynamic_array(granted_power),
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__entry->num_actors, 4),
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__entry->total_granted_power, __entry->power_range,
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__entry->max_allocatable_power, __entry->current_temp,
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__entry->delta_temp)
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);
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TRACE_EVENT(thermal_power_allocator_pid,
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TP_PROTO(struct thermal_zone_device *tz, s32 err, s32 err_integral,
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s64 p, s64 i, s64 d, s32 output),
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TP_ARGS(tz, err, err_integral, p, i, d, output),
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TP_STRUCT__entry(
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__field(int, tz_id )
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__field(s32, err )
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__field(s32, err_integral)
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__field(s64, p )
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__field(s64, i )
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__field(s64, d )
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__field(s32, output )
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),
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TP_fast_assign(
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__entry->tz_id = tz->id;
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__entry->err = err;
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__entry->err_integral = err_integral;
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__entry->p = p;
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__entry->i = i;
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__entry->d = d;
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__entry->output = output;
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),
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TP_printk("thermal_zone_id=%d err=%d err_integral=%d p=%lld i=%lld d=%lld output=%d",
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__entry->tz_id, __entry->err, __entry->err_integral,
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__entry->p, __entry->i, __entry->d, __entry->output)
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);
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#endif /* _TRACE_THERMAL_POWER_ALLOCATOR_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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