Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: [PATCH v4] cpufreq: schedutil: rate limits for SCHED_DEADLINE | Date | Wed, 14 Mar 2018 12:20:38 +0100 |
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On Wednesday, March 14, 2018 2:27:53 AM CET Joel Fernandes wrote: > On Tue, Mar 13, 2018 at 4:15 AM, Viresh Kumar <viresh.kumar@linaro.org> wrote: > > On 13-03-18, 11:35, Claudio Scordino wrote: > >> When the SCHED_DEADLINE scheduling class increases the CPU utilization, > >> we should not wait for the rate limit, otherwise we may miss some > >> deadline. > >> > >> Tests using rt-app on Exynos5422 with up to 10 SCHED_DEADLINE tasks have > >> shown reductions of even 10% of deadline misses with a negligible > >> increase of energy consumption (measured through Baylibre Cape). > >> > >> Signed-off-by: Claudio Scordino <claudio@evidence.eu.com> > >> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> > >> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > >> CC: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > >> CC: Viresh Kumar <viresh.kumar@linaro.org> > >> CC: Patrick Bellasi <patrick.bellasi@arm.com> > >> CC: Dietmar Eggemann <dietmar.eggemann@arm.com> > >> CC: Morten Rasmussen <morten.rasmussen@arm.com> > >> CC: Juri Lelli <juri.lelli@redhat.com> > >> CC: Vincent Guittot <vincent.guittot@linaro.org> > >> CC: Todd Kjos <tkjos@android.com> > >> CC: Joel Fernandes <joelaf@google.com> > >> CC: linux-pm@vger.kernel.org > >> CC: linux-kernel@vger.kernel.org > >> --- > >> Changes from v3: > >> - Specific routine renamed as ignore_dl_rate_limit() > > > > LGTM. Thanks. > > Nice! Thanks.
OK, the patch doesn't seem to depend on anything in -tip, so I'm going to apply it.
Thanks!
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