Re: [PATCH v4] cpufreq: schedutil: rate limits for SCHED_DEADLINE

[Viresh Kumar]

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@xxxxxxxxxxxxxxx>
> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> CC: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
> CC: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> CC: Patrick Bellasi <patrick.bellasi@xxxxxxx>
> CC: Dietmar Eggemann <dietmar.eggemann@xxxxxxx>
> CC: Morten Rasmussen <morten.rasmussen@xxxxxxx>
> CC: Juri Lelli <juri.lelli@xxxxxxxxxx>
> CC: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
> CC: Todd Kjos <tkjos@xxxxxxxxxxx>
> CC: Joel Fernandes <joelaf@xxxxxxxxxx>
> CC: linux-pm@xxxxxxxxxxxxxxx
> CC: linux-kernel@xxxxxxxxxxxxxxx
> ---
> Changes from v3:
>  - Specific routine renamed as ignore_dl_rate_limit()

LGTM. Thanks.

-- 
viresh