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From: Qais Yousef <qyousef@layalina.io>
To: Vincent Guittot <vincent.guittot@linaro.org>
Cc: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com,
	dietmar.eggemann@arm.com, rostedt@goodmis.org,
	bsegall@google.com, mgorman@suse.de, bristot@redhat.com,
	vschneid@redhat.com, rafael@kernel.org, viresh.kumar@linaro.org,
	linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
	lukasz.luba@arm.com, wyes.karny@amd.com, beata.michalska@arm.com
Subject: Re: [PATCH v4 0/2] Rework interface between scheduler and schedutil governor
Date: Tue, 21 Nov 2023 22:36:45 +0000	[thread overview]
Message-ID: <20231121223645.i2ujzcln72tw4gw7@airbuntu> (raw)
In-Reply-To: <20231122133904.446032-1-vincent.guittot@linaro.org>

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

  reply	other threads:[~2023-11-23 13:45 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-22 13:39 Vincent Guittot
2023-11-21 22:36 ` Qais Yousef [this message]
2023-11-22 13:39 ` [PATCH v4 1/2] sched/schedutil: Rework performance estimation Vincent Guittot
2023-11-22 13:49   ` Rafael J. Wysocki
2023-11-23 10:54   ` [tip: sched/core] sched/cpufreq: Rework schedutil governor " tip-bot2 for Vincent Guittot
2023-11-22 13:39 ` [PATCH v4 2/2] sched/schedutil: Rework iowait boost Vincent Guittot
2023-11-22 13:51   ` Rafael J. Wysocki
2023-11-23 10:34     ` Ingo Molnar
2023-11-23 10:54   ` [tip: sched/core] sched/cpufreq: " tip-bot2 for Vincent Guittot

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