linux-kernel - Re: [RESEND][PATCHv2] cpufreq/schedutil: Only bind threads if needed

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Message-ID: <b044f0b1-7b17-41e0-98a2-0247e6212062@arm.com>
Date: Mon, 18 Nov 2024 12:49:21 +0000
From: Christian Loehle <christian.loehle@....com>
To: Peter Zijlstra <peterz@...radead.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc: Ingo Molnar <mingo@...hat.com>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Juri Lelli <juri.lelli@...hat.com>,
 Vincent Guittot <vincent.guittot@...aro.org>,
 Valentin Schneider <vschneid@...hat.com>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [RESEND][PATCHv2] cpufreq/schedutil: Only bind threads if needed

On 11/6/24 14:55, Christian Loehle wrote:
> Remove the unconditional binding of sugov kthreads to the affected CPUs
> if the cpufreq driver indicates that updates can happen from any CPU.
> This allows userspace to set affinities to either save power (waking up
> bigger CPUs on HMP can be expensive) or increasing performance (by
> letting the utilized CPUs run without preemption of the sugov kthread).
> 
> Signed-off-by: Christian Loehle <christian.loehle@....com>
> Acked-by: Viresh Kumar <viresh.kumar@...aro.org>
> Acked-by: Vincent Guittot <vincent.guittot@...aro.org>
> Acked-by: Rafael J. Wysocki <rafael@...nel.org>
> Acked-by: Juri Lelli <juri.lelli@...hat.com>
> ---

Gentle ping on this.

Regards,
Christian