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Message-Id: <1445967059-6897-2-git-send-email-czoborbalint@gmail.com>
Date: Tue, 27 Oct 2015 18:29:50 +0100
From: Bálint Czobor <czoborbalint@...il.com>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>
Cc: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
Todd Poynor <toddpoynor@...gle.com>,
Bálint Czobor <czoborbalint@...il.com>
Subject: [PATCH 02/70] cpufreq interactive governor: event tracing
From: Todd Poynor <toddpoynor@...gle.com>
Change-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66
Signed-off-by: Todd Poynor <toddpoynor@...gle.com>
Signed-off-by: Bálint Czobor <czoborbalint@...il.com>
---
drivers/cpufreq/cpufreq_interactive.c | 19 +++++-
include/trace/events/cpufreq_interactive.h | 87 ++++++++++++++++++++++++++++
2 files changed, 105 insertions(+), 1 deletion(-)
create mode 100644 include/trace/events/cpufreq_interactive.h
diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cpufreq_interactive.c
index 8fc147c..62e7456 100644
--- a/drivers/cpufreq/cpufreq_interactive.c
+++ b/drivers/cpufreq/cpufreq_interactive.c
@@ -30,6 +30,9 @@
#include <linux/kthread.h>
#include <linux/mutex.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/cpufreq_interactive.h>
+
#include <asm/cputime.h>
static atomic_t active_count = ATOMIC_INIT(0);
@@ -182,7 +185,11 @@ static void cpufreq_interactive_timer(unsigned long data)
new_freq = pcpu->freq_table[index].frequency;
if (pcpu->target_freq == new_freq)
+ {
+ trace_cpufreq_interactive_already(data, cpu_load,
+ pcpu->target_freq, new_freq);
goto rearm_if_notmax;
+ }
/*
* Do not scale down unless we have been at this frequency for the
@@ -190,10 +197,16 @@ static void cpufreq_interactive_timer(unsigned long data)
*/
if (new_freq < pcpu->target_freq) {
if (pcpu->timer_run_time - pcpu->freq_change_time
- < min_sample_time)
+ < min_sample_time) {
+ trace_cpufreq_interactive_notyet(data, cpu_load,
+ pcpu->target_freq, new_freq);
goto rearm;
+ }
}
+ trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq,
+ new_freq);
+
if (new_freq < pcpu->target_freq) {
pcpu->target_freq = new_freq;
spin_lock_irqsave(&down_cpumask_lock, flags);
@@ -381,6 +394,8 @@ static int cpufreq_interactive_up_task(void *data)
pcpu->freq_change_time_in_idle =
get_cpu_idle_time_us(cpu,
&pcpu->freq_change_time);
+ trace_cpufreq_interactive_up(cpu, pcpu->target_freq,
+ pcpu->policy->cur);
}
}
@@ -427,6 +442,8 @@ static void cpufreq_interactive_freq_down(struct work_struct *work)
pcpu->freq_change_time_in_idle =
get_cpu_idle_time_us(cpu,
&pcpu->freq_change_time);
+ trace_cpufreq_interactive_down(cpu, pcpu->target_freq,
+ pcpu->policy->cur);
}
}
diff --git a/include/trace/events/cpufreq_interactive.h b/include/trace/events/cpufreq_interactive.h
new file mode 100644
index 0000000..3a90d3d
--- /dev/null
+++ b/include/trace/events/cpufreq_interactive.h
@@ -0,0 +1,87 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM cpufreq_interactive
+
+#if !defined(_TRACE_CPUFREQ_INTERACTIVE_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_CPUFREQ_INTERACTIVE_H
+
+#include <linux/tracepoint.h>
+
+DECLARE_EVENT_CLASS(set,
+ TP_PROTO(u32 cpu_id, unsigned long targfreq,
+ unsigned long actualfreq),
+ TP_ARGS(cpu_id, targfreq, actualfreq),
+
+ TP_STRUCT__entry(
+ __field( u32, cpu_id )
+ __field(unsigned long, targfreq )
+ __field(unsigned long, actualfreq )
+ ),
+
+ TP_fast_assign(
+ __entry->cpu_id = (u32) cpu_id;
+ __entry->targfreq = targfreq;
+ __entry->actualfreq = actualfreq;
+ ),
+
+ TP_printk("cpu=%u targ=%lu actual=%lu",
+ __entry->cpu_id, __entry->targfreq,
+ __entry->actualfreq)
+);
+
+DEFINE_EVENT(set, cpufreq_interactive_up,
+ TP_PROTO(u32 cpu_id, unsigned long targfreq,
+ unsigned long actualfreq),
+ TP_ARGS(cpu_id, targfreq, actualfreq)
+);
+
+DEFINE_EVENT(set, cpufreq_interactive_down,
+ TP_PROTO(u32 cpu_id, unsigned long targfreq,
+ unsigned long actualfreq),
+ TP_ARGS(cpu_id, targfreq, actualfreq)
+);
+
+DECLARE_EVENT_CLASS(loadeval,
+ TP_PROTO(unsigned long cpu_id, unsigned long load,
+ unsigned long curfreq, unsigned long targfreq),
+ TP_ARGS(cpu_id, load, curfreq, targfreq),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, cpu_id )
+ __field(unsigned long, load )
+ __field(unsigned long, curfreq )
+ __field(unsigned long, targfreq )
+ ),
+
+ TP_fast_assign(
+ __entry->cpu_id = cpu_id;
+ __entry->load = load;
+ __entry->curfreq = curfreq;
+ __entry->targfreq = targfreq;
+ ),
+
+ TP_printk("cpu=%lu load=%lu cur=%lu targ=%lu",
+ __entry->cpu_id, __entry->load, __entry->curfreq,
+ __entry->targfreq)
+);
+
+DEFINE_EVENT(loadeval, cpufreq_interactive_target,
+ TP_PROTO(unsigned long cpu_id, unsigned long load,
+ unsigned long curfreq, unsigned long targfreq),
+ TP_ARGS(cpu_id, load, curfreq, targfreq)
+);
+
+DEFINE_EVENT(loadeval, cpufreq_interactive_already,
+ TP_PROTO(unsigned long cpu_id, unsigned long load,
+ unsigned long curfreq, unsigned long targfreq),
+ TP_ARGS(cpu_id, load, curfreq, targfreq)
+);
+
+DEFINE_EVENT(loadeval, cpufreq_interactive_notyet,
+ TP_PROTO(unsigned long cpu_id, unsigned long load,
+ unsigned long curfreq, unsigned long targfreq),
+ TP_ARGS(cpu_id, load, curfreq, targfreq)
+);
+#endif /* _TRACE_CPUFREQ_INTERACTIVE_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
--
1.7.9.5
--
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