From: Viresh Kumar <viresh.kumar@linaro.org>
To: Juri Lelli <juri.lelli@arm.com>
Cc: peterz@infradead.org, mingo@redhat.com, rjw@rjwysocki.net,
linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
tglx@linutronix.de, vincent.guittot@linaro.org,
rostedt@goodmis.org, luca.abeni@santannapisa.it,
claudio@evidence.eu.com, tommaso.cucinotta@santannapisa.it,
bristot@redhat.com, mathieu.poirier@linaro.org,
tkjos@android.com, joelaf@google.com, andresoportus@google.com,
morten.rasmussen@arm.com, dietmar.eggemann@arm.com,
patrick.bellasi@arm.com, Ingo Molnar <mingo@kernel.org>,
"Rafael J . Wysocki" <rafael.j.wysocki@intel.com>
Subject: Re: [RFC PATCH v1 1/8] sched/cpufreq_schedutil: make use of DEADLINE utilization signal
Date: Fri, 7 Jul 2017 12:50:04 +0530 [thread overview]
Message-ID: <20170707072004.GF1523@vireshk-i7> (raw)
In-Reply-To: <20170705085905.6558-2-juri.lelli@arm.com>
On 05-07-17, 09:58, Juri Lelli wrote:
> SCHED_DEADLINE tracks active utilization signal with a per dl_rq
> variable named running_bw.
>
> Make use of that to drive cpu frequency selection: add up FAIR and
> DEADLINE contribution to get the required CPU capacity to handle both
> requirements (while RT still selects max frequency).
>
> Co-authored-by: Claudio Scordino <claudio@evidence.eu.com>
> Signed-off-by: Juri Lelli <juri.lelli@arm.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Ingo Molnar <mingo@kernel.org>
> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> Cc: Viresh Kumar <viresh.kumar@linaro.org>
> Cc: Luca Abeni <luca.abeni@santannapisa.it>
> ---
> Changes from RFCv0:
>
> - use BW_SHIFT (Peter)
> - add comment about guaranteed and requested freq (Peter)
> - modify comment about go to max behaviour (Claudio)
> ---
> include/linux/sched/cpufreq.h | 2 --
> kernel/sched/cpufreq_schedutil.c | 25 +++++++++++++++----------
> 2 files changed, 15 insertions(+), 12 deletions(-)
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
--
viresh
next prev parent reply other threads:[~2017-07-07 7:20 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-05 8:58 [RFC PATCH v1 0/8] SCHED_DEADLINE freq/cpu invariance and OPP selection Juri Lelli
2017-07-05 8:58 ` [RFC PATCH v1 1/8] sched/cpufreq_schedutil: make use of DEADLINE utilization signal Juri Lelli
2017-07-07 7:20 ` Viresh Kumar [this message]
2017-07-05 8:58 ` [RFC PATCH v1 2/8] sched/deadline: move cpu frequency selection triggering points Juri Lelli
2017-07-07 7:21 ` Viresh Kumar
2017-07-05 8:59 ` [RFC PATCH v1 3/8] sched/cpufreq_schedutil: make worker kthread be SCHED_DEADLINE Juri Lelli
2017-07-07 3:56 ` Joel Fernandes
2017-07-07 10:43 ` Juri Lelli
2017-07-07 10:46 ` Thomas Gleixner
2017-07-07 10:53 ` Juri Lelli
2017-07-07 13:11 ` Rafael J. Wysocki
2017-07-07 21:58 ` Steven Rostedt
2017-07-07 22:07 ` Joel Fernandes
2017-07-07 22:15 ` Steven Rostedt
2017-07-07 22:57 ` Joel Fernandes
2017-07-11 12:37 ` Peter Zijlstra
2017-07-07 7:21 ` Viresh Kumar
2017-07-11 16:18 ` Peter Zijlstra
2017-07-11 17:02 ` Juri Lelli
2017-07-05 8:59 ` [RFC PATCH v1 4/8] sched/cpufreq_schedutil: split utilization signals Juri Lelli
2017-07-07 3:26 ` Joel Fernandes
2017-07-07 8:58 ` Viresh Kumar
2017-07-07 10:59 ` Juri Lelli
2017-07-10 7:46 ` Joel Fernandes
2017-07-10 7:05 ` Viresh Kumar
2017-07-05 8:59 ` [RFC PATCH v1 5/8] sched/cpufreq_schedutil: always consider all CPUs when deciding next freq Juri Lelli
2017-07-07 8:59 ` Viresh Kumar
2017-07-11 16:17 ` Peter Zijlstra
2017-07-11 17:18 ` Juri Lelli
2017-07-05 8:59 ` [RFC PATCH v1 6/8] sched/sched.h: remove sd arch_scale_freq_capacity parameter Juri Lelli
2017-07-05 8:59 ` [RFC PATCH v1 7/8] sched/sched.h: move arch_scale_{freq,cpu}_capacity outside CONFIG_SMP Juri Lelli
2017-07-07 22:04 ` Steven Rostedt
2017-07-05 8:59 ` [RFC PATCH v1 8/8] sched/deadline: make bandwidth enforcement scale-invariant Juri Lelli
2017-07-19 7:21 ` Peter Zijlstra
2017-07-19 9:20 ` Juri Lelli
2017-07-19 11:00 ` Peter Zijlstra
2017-07-19 11:16 ` Juri Lelli
2017-07-24 16:43 ` Peter Zijlstra
2017-07-25 7:03 ` Luca Abeni
2017-07-25 13:51 ` Peter Zijlstra
2017-07-26 13:50 ` luca abeni
2017-07-06 15:57 ` [RFC PATCH v1 0/8] SCHED_DEADLINE freq/cpu invariance and OPP selection Steven Rostedt
2017-07-06 16:08 ` Juri Lelli
2017-07-06 16:15 ` Peter Zijlstra
2017-07-06 21:08 ` Rafael J. Wysocki
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170707072004.GF1523@vireshk-i7 \
--to=viresh.kumar@linaro.org \
--cc=andresoportus@google.com \
--cc=bristot@redhat.com \
--cc=claudio@evidence.eu.com \
--cc=dietmar.eggemann@arm.com \
--cc=joelaf@google.com \
--cc=juri.lelli@arm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=luca.abeni@santannapisa.it \
--cc=mathieu.poirier@linaro.org \
--cc=mingo@kernel.org \
--cc=mingo@redhat.com \
--cc=morten.rasmussen@arm.com \
--cc=patrick.bellasi@arm.com \
--cc=peterz@infradead.org \
--cc=rafael.j.wysocki@intel.com \
--cc=rjw@rjwysocki.net \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
--cc=tkjos@android.com \
--cc=tommaso.cucinotta@santannapisa.it \
--cc=vincent.guittot@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).