eas-dev March 2015

eas-dev@lists.linaro.org

11 participants
7 discussions

Re: [Eas-dev] Invitation: sched-dvfs design discussion - Mer. 18 Mars 2015 15:30 - 16:30 (Daniel Lezcano)

by Daniel Lezcano

I have an appointment at this time. Is it possible to delay *2* hours after ? -- Daniel On 03/18/2015 06:29 AM, Mike Turquette wrote: > plus d'infos » > <https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY…> > > > sched-dvfs design discussion > > Link to Google HO is in the meeting details. If that doesn't work for > everyone then we can use some teleconf method. > > The main purpose of the call is to discuss: > 1) locking issues around get_cpu_usage > 2) the polling nature of the current governor code and its implications > 3) designing for the non-blocking DVFS case and for unification of task > placement and frequency selection decisions > > /Date/ > Mer. 18 Mars 2015 15:30 – 16:30 Paris > /Appel vidéo/ > https://plus.google.com/hangouts/_/linaro.org/sched-dvfs > <https://plus.google.com/hangouts/_/linaro.org/sched-dvfs?hceid=bWlrZS50dXJx…> > /Agenda/ > Daniel Lezcano > /Participants/ > > • > Mike Turquette- organisateur > • > Morten Rasmussen > • > Amit Kucheria > • > Daniel Lezcano > • > eas-dev(a)lists.linaro.org > • > Vincent Guittot > • > dietmar.eggemann(a)arm.com > • > Juri Lelli > > Allez-vous participer ? *Oui > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…>- > Peut-être > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…>- > Non > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…>* > plus d'options » > <https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY…> > > Invitation de Google Agenda <https://www.google.com/calendar/> > > Vous recevez ce message à l'adresse daniel.lezcano(a)linaro.org, car vous > êtes abonné aux invitations dans l'agenda Daniel Lezcano. > > Pour ne plus recevoir ces e-mails, veuillez vous connecter à > https://www.google.com/calendar/ et modifier vos paramètres de > notification pour cet agenda. > -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog

10 years, 4 months

ARM Workload Automation now opensource

by Ian Rickards

FYI, this week ARM opensourced the Workload Automation suite that is useful for EAS evaluation License is Apache ver 2.0 https://github.com/ARM-software/workload-automation (see README for details) -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782

10 years, 5 months

EAS backport trees

by Juri Lelli

Hi Amit, since I've got a backport of EASv3 and I'd like to share this with all, can you please give me an update about the EAS backport tree maintenance bits we agreed upon. Thanks a lot, - Juri

10 years, 5 months

Re: [Eas-dev] Invitation: sched-dvfs design discussion - Mer. 18 Mars 2015 15:30 - 16:30 (Vincent Guittot)

by Vincent Guittot

Hi Mike, Is it possible to delay the meeting by 1 hour ? I have another internal meeting during the same timeslot Regards, Vincent 2015-03-18 6:29 GMT+01:00 Mike Turquette <mike.turquette(a)linaro.org>: > plus d'infos >> > <https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY…> > sched-dvfs design discussion > Link to Google HO is in the meeting details. If that doesn't work for > everyone then we can use some teleconf method. > > The main purpose of the call is to discuss: > 1) locking issues around get_cpu_usage > 2) the polling nature of the current governor code and its implications > 3) designing for the non-blocking DVFS case and for unification of task > placement and frequency selection decisions > *Date* > Mer. 18 Mars 2015 15:30 - 16:30 Paris > *Appel vidéo* > https://plus.google.com/hangouts/_/linaro.org/sched-dvfs > <https://plus.google.com/hangouts/_/linaro.org/sched-dvfs?hceid=bWlrZS50dXJx…> > *Agenda* > Vincent Guittot > *Participants* > * > Mike Turquette- organisateur > * > Amit Kucheria > * > Morten Rasmussen > * > Vincent Guittot > * > dietmar.eggemann(a)arm.com > * > Daniel Lezcano > * > Juri Lelli > * > eas-dev(a)lists.linaro.org > > Allez-vous participer ? *Oui > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…> > - Peut-être > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…> > - Non > <https://www.google.com/calendar/event?action=RESPOND&eid=a2s1amRldW4zY28yMT…>* > plus d'options >> > <https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY…> > > Invitation de Google Agenda <https://www.google.com/calendar/> > > Vous recevez ce message à l'adresse vincent.guittot(a)linaro.org, car vous > êtes abonné aux invitations dans l'agenda Vincent Guittot. > > Pour ne plus recevoir ces e-mails, veuillez vous connecter à > https://www.google.com/calendar/ et modifier vos paramètres de > notification pour cet agenda. >

10 years, 5 months

Updated Invitation: sched-dvfs design discussion @ Wed 2015-03-18 9:30am - 10:30am (Mike Turquette)

by mike.turquette＠linaro.org

This event has been changed. Title: sched-dvfs design discussion Link to Google HO is in the meeting details. If that doesn't work for everyone then we can use some teleconf method. The main purpose of the call is to discuss: 1) locking issues around get_cpu_usage 2) the polling nature of the current governor code and its implications 3) designing for the non-blocking DVFS case and for unification of task placement and frequency selection decisions When: Wed 2015-03-18 9:30am - 10:30am Pacific Time (changed) Video call: https://plus.google.com/hangouts/_/linaro.org/sched-dvfs <https://plus.google.com/hangouts/_/linaro.org/sched-dvfs?hceid=bWlrZS50dXJx…> Calendar: Mike Turquette Who: * Mike Turquette - organizer * Morten Rasmussen * Amit Kucheria * eas-dev(a)lists.linaro.org * Vincent Guittot * Juri Lelli * Daniel Lezcano * dietmar.eggemann(a)arm.com Event details: https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY… Invitation from Google Calendar: https://www.google.com/calendar/ You are receiving this courtesy email at the account eas-dev(a)lists.linaro.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://www.google.com/calendar/ and control your notification settings for your entire calendar.

10 years, 5 months

[PATCH 0/6] scheduler-driven cpu frequency scaling

by Juri Lelli

Hi all, as agreed with Mike, I'm posting here his sched-dvfs patchset [1] plus my EAS bindings to make it use the energy model. This is meant to re-start discussion on the attempt to drive dvfs directly from the scheduler. This patchset is based on 4.0-rc2 + EASv3 [2]. Mike is already working on a slightly different, more "reactive", approach. The way we can use EAS infrastructure shouldn't change much anyway, so this works also as a first example of such thing. The core of my little delta resides in the possibility to read the energy tables to get freq and uarch invariance in the new governor (4/6) and the use of get_cpu_usage() to get the utilization signal from the scheduler (that I squashed in 02/06 together with some little fixes). Best, - Juri [1] https://lkml.org/lkml/2014/10/22/21 [2] https://lkml.org/lkml/2015/2/4/537 Juri Lelli (3): sched/energy_model: use EAS energy model sched/energy_model: bound kthreads to run on related_cpus sched/energy_model: fix spurious kicks Michael Turquette (1): sched: cfs: cpu frequency scaling based on task placement Mike Turquette (2): cpufreq: add per-governor private data sched: energy_model: simple cpu frequency scaling policy drivers/cpufreq/Kconfig | 21 +++ include/linux/cpufreq.h | 6 + kernel/sched/Makefile | 1 + kernel/sched/energy_model.c | 364 ++++++++++++++++++++++++++++++++++++++++++++ kernel/sched/fair.c | 51 ++++++- kernel/sched/sched.h | 5 + 6 files changed, 441 insertions(+), 7 deletions(-) create mode 100644 kernel/sched/energy_model.c -- 2.2.2

10 years, 5 months

Invitation: sched-dvfs design discussion @ Wed 2015-03-18 7:30am - 8:30am (Mike Turquette)

by Mike Turquette

You have been invited to the following event. Title: sched-dvfs design discussion Link to Google HO is in the meeting details. If that doesn't work for everyone then we can use some teleconf method. The main purpose of the call is to discuss: 1) locking issues around get_cpu_usage 2) the polling nature of the current governor code and its implications 3) designing for the non-blocking DVFS case and for unification of task placement and frequency selection decisions When: Wed 2015-03-18 7:30am - 8:30am Pacific Time Video call: https://plus.google.com/hangouts/_/linaro.org/sched-dvfs <https://plus.google.com/hangouts/_/linaro.org/sched-dvfs?hceid=bWlrZS50dXJx…> Calendar: Mike Turquette Who: * Mike Turquette - organizer * Morten Rasmussen * Amit Kucheria * eas-dev(a)lists.linaro.org * Vincent Guittot * Juri Lelli * Daniel Lezcano * dietmar.eggemann(a)arm.com Event details: https://www.google.com/calendar/event?action=VIEW&eid=a2s1amRldW4zY28yMTdlY… Invitation from Google Calendar: https://www.google.com/calendar/ You are receiving this courtesy email at the account eas-dev(a)lists.linaro.org because you are an attendee of this event. To stop receiving future updates for this event, decline this event. Alternatively you can sign up for a Google account at https://www.google.com/calendar/ and control your notification settings for your entire calendar.

10 years, 5 months

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eas-dev March 2015