From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?B=C3=A1lint=20Czobor?= Subject: [PATCH 09/70] cpufreq: interactive: Separate speed target revalidate time and initial set time Date: Tue, 27 Oct 2015 18:29:57 +0100 Message-ID: <1445967059-6897-9-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: In-Reply-To: <1445967059-6897-1-git-send-email-czoborbalint@gmail.com> Sender: linux-kernel-owner@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?= List-Id: linux-pm@vger.kernel.org =46rom: Todd Poynor Allow speed drop after min_sample_time elapses from last time the current speed was last re-validated as appropriate for current load / input boost. Allow speed bump after min_sample_time (or above_hispeed_delay) elapses from the time the current speed was originally set. Change-Id: Ic25687a7a53d25e6544c30c47d7ab6f27a47bee8 Signed-off-by: Todd Poynor Signed-off-by: B=C3=A1lint Czobor --- drivers/cpufreq/cpufreq_interactive.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/cpufreq_interactive.c b/drivers/cpufreq/cp= ufreq_interactive.c index b78174f..083f790 100644 --- a/drivers/cpufreq/cpufreq_interactive.c +++ b/drivers/cpufreq/cpufreq_interactive.c @@ -46,6 +46,8 @@ struct cpufreq_interactive_cpuinfo { int idling; u64 target_set_time; u64 target_set_time_in_idle; + u64 target_validate_time; + u64 target_validate_time_in_idle; struct cpufreq_policy *policy; struct cpufreq_frequency_table *freq_table; unsigned int target_freq; @@ -208,10 +210,10 @@ static void cpufreq_interactive_timer(unsigned lo= ng data) =20 /* * Do not scale down unless we have been at this frequency for the - * minimum sample time. + * minimum sample time since last validated. */ if (new_freq < pcpu->target_freq) { - if (pcpu->timer_run_time - pcpu->target_set_time + if (pcpu->timer_run_time - pcpu->target_validate_time < min_sample_time) { trace_cpufreq_interactive_notyet(data, cpu_load, pcpu->target_freq, new_freq); @@ -219,8 +221,8 @@ static void cpufreq_interactive_timer(unsigned long= data) } } =20 - pcpu->target_set_time_in_idle =3D now_idle; - pcpu->target_set_time =3D pcpu->timer_run_time; + pcpu->target_validate_time_in_idle =3D now_idle; + pcpu->target_validate_time =3D pcpu->timer_run_time; =20 if (pcpu->target_freq =3D=3D new_freq) { trace_cpufreq_interactive_already(data, cpu_load, @@ -230,6 +232,8 @@ static void cpufreq_interactive_timer(unsigned long= data) =20 trace_cpufreq_interactive_target(data, cpu_load, pcpu->target_freq, new_freq); + pcpu->target_set_time_in_idle =3D now_idle; + pcpu->target_set_time =3D pcpu->timer_run_time; =20 if (new_freq < pcpu->target_freq) { pcpu->target_freq =3D new_freq; @@ -614,6 +618,10 @@ static int cpufreq_governor_interactive(struct cpu= freq_policy *policy, pcpu->target_set_time_in_idle =3D get_cpu_idle_time_us(j, &pcpu->target_set_time); + pcpu->target_validate_time =3D + pcpu->target_set_time; + pcpu->target_validate_time_in_idle =3D + pcpu->target_set_time_in_idle; pcpu->governor_enabled =3D 1; smp_wmb(); } --=20 1.7.9.5