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Message-ID: <20231121223645.i2ujzcln72tw4gw7@airbuntu>
Date: Tue, 21 Nov 2023 22:36:45 +0000
From: Qais Yousef <qyousef@...alina.io>
To: Vincent Guittot <vincent.guittot@...aro.org>
Cc: mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
dietmar.eggemann@....com, rostedt@...dmis.org, bsegall@...gle.com,
mgorman@...e.de, bristot@...hat.com, vschneid@...hat.com,
rafael@...nel.org, viresh.kumar@...aro.org,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
lukasz.luba@....com, wyes.karny@....com, beata.michalska@....com
Subject: Re: [PATCH v4 0/2] Rework interface between scheduler and schedutil
governor
On 11/22/23 14:39, Vincent Guittot wrote:
> Following the discussion with Qais [1] about how to handle uclamp
> requirements and after syncing with him, we agreed that I should move
> forward on the patchset to rework the interface between scheduler and
> schedutil governor to provide more information to the latter. Scheduler
> (and EAS in particular) doesn't need anymore to guess estimate which
> headroom the governor wants to apply and will directly ask for the target
> freq. Then the governor directly gets the actual utilization and new
> minimum and maximum boundaries to select this target frequency and
> doesn't have to deal anymore with scheduler internals like uclamp when
> including iowait boost.
>
> [1] https://lore.kernel.org/lkml/CAKfTPtA5JqNCauG-rP3wGfq+p8EEVx9Tvwj6ksM3SYCwRmfCTg@mail.gmail.com/
>
> Changes since v3:
> - Fix freq selection with runnable RT
Thanks! Both patches LGTM now.
Cheers
--
Qais Yousef
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