cpufreq interactive governor: event tracing
Change-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66 Signed-off-by: Todd Poynor <toddpoynor@google.com>
This commit is contained in:
Todd Poynor
John Stultz
parent
008bd616dd
commit
2561571b3b
2 changed files with 105 additions and 1 deletions
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@ -30,6 +30,9 @@
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#include <linux/kthread.h>
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#include <linux/mutex.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/cpufreq_interactive.h>
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#include <asm/cputime.h>
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static atomic_t active_count = ATOMIC_INIT(0);
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@ -182,7 +185,11 @@ static void cpufreq_interactive_timer(unsigned long data)
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new_freq = pcpu->freq_table[index].frequency;
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if (pcpu->target_freq == new_freq)
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{
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trace_cpufreq_interactive_already(data, cpu_load,
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pcpu->target_freq, new_freq);
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goto rearm_if_notmax;
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}
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/*
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* Do not scale down unless we have been at this frequency for the
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@ -190,10 +197,16 @@ static void cpufreq_interactive_timer(unsigned long data)
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*/
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if (new_freq < pcpu->target_freq) {
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if (pcpu->timer_run_time - pcpu->freq_change_time
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< min_sample_time)
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< min_sample_time) {
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trace_cpufreq_interactive_notyet(data, cpu_load,
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pcpu->target_freq, new_freq);
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goto rearm;
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}
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}
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trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq,
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new_freq);
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if (new_freq < pcpu->target_freq) {
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pcpu->target_freq = new_freq;
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spin_lock_irqsave(&down_cpumask_lock, flags);
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@ -381,6 +394,8 @@ static int cpufreq_interactive_up_task(void *data)
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pcpu->freq_change_time_in_idle =
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get_cpu_idle_time_us(cpu,
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&pcpu->freq_change_time);
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trace_cpufreq_interactive_up(cpu, pcpu->target_freq,
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pcpu->policy->cur);
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}
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}
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@ -427,6 +442,8 @@ static void cpufreq_interactive_freq_down(struct work_struct *work)
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pcpu->freq_change_time_in_idle =
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get_cpu_idle_time_us(cpu,
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&pcpu->freq_change_time);
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trace_cpufreq_interactive_down(cpu, pcpu->target_freq,
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pcpu->policy->cur);
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}
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}
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87
include/trace/events/cpufreq_interactive.h
Normal file
87
include/trace/events/cpufreq_interactive.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 cpufreq_interactive
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#if !defined(_TRACE_CPUFREQ_INTERACTIVE_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _TRACE_CPUFREQ_INTERACTIVE_H
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#include <linux/tracepoint.h>
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DECLARE_EVENT_CLASS(set,
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TP_PROTO(u32 cpu_id, unsigned long targfreq,
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unsigned long actualfreq),
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TP_ARGS(cpu_id, targfreq, actualfreq),
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TP_STRUCT__entry(
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__field( u32, cpu_id )
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__field(unsigned long, targfreq )
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__field(unsigned long, actualfreq )
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),
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TP_fast_assign(
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__entry->cpu_id = (u32) cpu_id;
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__entry->targfreq = targfreq;
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__entry->actualfreq = actualfreq;
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),
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TP_printk("cpu=%u targ=%lu actual=%lu",
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__entry->cpu_id, __entry->targfreq,
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__entry->actualfreq)
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);
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DEFINE_EVENT(set, cpufreq_interactive_up,
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TP_PROTO(u32 cpu_id, unsigned long targfreq,
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unsigned long actualfreq),
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TP_ARGS(cpu_id, targfreq, actualfreq)
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);
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DEFINE_EVENT(set, cpufreq_interactive_down,
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TP_PROTO(u32 cpu_id, unsigned long targfreq,
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unsigned long actualfreq),
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TP_ARGS(cpu_id, targfreq, actualfreq)
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);
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DECLARE_EVENT_CLASS(loadeval,
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TP_PROTO(unsigned long cpu_id, unsigned long load,
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unsigned long curfreq, unsigned long targfreq),
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TP_ARGS(cpu_id, load, curfreq, targfreq),
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TP_STRUCT__entry(
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__field(unsigned long, cpu_id )
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__field(unsigned long, load )
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__field(unsigned long, curfreq )
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__field(unsigned long, targfreq )
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),
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TP_fast_assign(
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__entry->cpu_id = cpu_id;
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__entry->load = load;
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__entry->curfreq = curfreq;
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__entry->targfreq = targfreq;
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),
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TP_printk("cpu=%lu load=%lu cur=%lu targ=%lu",
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__entry->cpu_id, __entry->load, __entry->curfreq,
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__entry->targfreq)
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);
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DEFINE_EVENT(loadeval, cpufreq_interactive_target,
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TP_PROTO(unsigned long cpu_id, unsigned long load,
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unsigned long curfreq, unsigned long targfreq),
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TP_ARGS(cpu_id, load, curfreq, targfreq)
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);
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DEFINE_EVENT(loadeval, cpufreq_interactive_already,
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TP_PROTO(unsigned long cpu_id, unsigned long load,
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unsigned long curfreq, unsigned long targfreq),
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TP_ARGS(cpu_id, load, curfreq, targfreq)
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);
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DEFINE_EVENT(loadeval, cpufreq_interactive_notyet,
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TP_PROTO(unsigned long cpu_id, unsigned long load,
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unsigned long curfreq, unsigned long targfreq),
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TP_ARGS(cpu_id, load, curfreq, targfreq)
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);
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#endif /* _TRACE_CPUFREQ_INTERACTIVE_H */
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/* This part must be outside protection */
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#include <trace/define_trace.h>
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