From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?B=C3=A1lint=20Czobor?= Subject: [PATCH 02/70] cpufreq interactive governor: event tracing Date: Tue, 27 Oct 2015 18:29:50 +0100 Message-ID: <1445967059-6897-2-git-send-email-czoborbalint@gmail.com> References: <1445967059-6897-1-git-send-email-czoborbalint@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-wi0-f175.google.com ([209.85.212.175]:33472 "EHLO mail-wi0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964956AbbJ0Rbe (ORCPT ); Tue, 27 Oct 2015 13:31:34 -0400 In-Reply-To: <1445967059-6897-1-git-send-email-czoborbalint@gmail.com> Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" , Viresh Kumar Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Todd Poynor , =?UTF-8?q?B=C3=A1lint=20Czobor?= =46rom: Todd Poynor Change-Id: Ic13614a3da2faa2d4bd215ca3eb7191614f0cf66 Signed-off-by: Todd Poynor Signed-off-by: B=C3=A1lint Czobor --- 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/cp= ufreq_interactive.c index 8fc147c..62e7456 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -30,6 +30,9 @@ #include #include =20 +#define CREATE_TRACE_POINTS +#include + #include =20 static atomic_t active_count =3D ATOMIC_INIT(0); @@ -182,7 +185,11 @@ static void cpufreq_interactive_timer(unsigned lon= g data) new_freq =3D pcpu->freq_table[index].frequency; =20 if (pcpu->target_freq =3D=3D new_freq) + { + trace_cpufreq_interactive_already(data, cpu_load, + pcpu->target_freq, new_freq); goto rearm_if_notmax; + } =20 /* * Do not scale down unless we have been at this frequency for the @@ -190,10 +197,16 @@ static void cpufreq_interactive_timer(unsigned lo= ng 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; + } } =20 + trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq, + new_freq); + if (new_freq < pcpu->target_freq) { pcpu->target_freq =3D 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 =3D get_cpu_idle_time_us(cpu, &pcpu->freq_change_time); + trace_cpufreq_interactive_up(cpu, pcpu->target_freq, + pcpu->policy->cur); } } =20 @@ -427,6 +442,8 @@ static void cpufreq_interactive_freq_down(struct wo= rk_struct *work) pcpu->freq_change_time_in_idle =3D get_cpu_idle_time_us(cpu, &pcpu->freq_change_time); + trace_cpufreq_interactive_down(cpu, pcpu->target_freq, + pcpu->policy->cur); } } =20 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_MUL= TI_READ) +#define _TRACE_CPUFREQ_INTERACTIVE_H + +#include + +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 =3D (u32) cpu_id; + __entry->targfreq =3D targfreq; + __entry->actualfreq =3D actualfreq; + ), + + TP_printk("cpu=3D%u targ=3D%lu actual=3D%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 =3D cpu_id; + __entry->load =3D load; + __entry->curfreq =3D curfreq; + __entry->targfreq =3D targfreq; + ), + + TP_printk("cpu=3D%lu load=3D%lu cur=3D%lu targ=3D%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 --=20 1.7.9.5