Messages in this thread | | | Date | Tue, 13 Mar 2018 16:45:06 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH v4] cpufreq: schedutil: rate limits for SCHED_DEADLINE |
| |
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.
-- viresh
| |