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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <a6bb15d0-7ac9-4a32-93a7-ea7e3c5ffe9e@arm.com>
Date: Thu, 31 Oct 2024 14:59:34 +0000
From: Christian Loehle <christian.loehle@....com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Viresh Kumar <viresh.kumar@...aro.org>, Qais Yousef
 <qyousef@...alina.io>, Vincent Guittot <vincent.guittot@...aro.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 linux-pm <linux-pm@...r.kernel.org>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Pierre Gondois <pierre.gondois@....com>, Juri Lelli <juri.lelli@...hat.com>
Subject: Re: [PATCHv2] cpufreq/schedutil: Only bind threads if needed

On 10/24/24 10:13, Christian Loehle wrote:
> On 10/7/24 11:42, Christian Loehle wrote:
>> On 10/1/24 19:31, Rafael J. Wysocki wrote:
>>> On Fri, Sep 27, 2024 at 10:59 AM Christian Loehle
>>> <christian.loehle@....com> 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: Rafael J. Wysocki <rafael@...nel.org>
>>>
>>> and I'm assuming that this will go in via tip.
>>
>> Peter, is that fine with you?
>>
>> @Juri: I didn't add your (somewhat implied?) ACK on v2, so I'd be happy to
>> get it on the dl_task_check_affinity() part.
>>
> 
> Peter,
> gentle ping on this.
> Thank you.

Hi Peter,
Another gentle ping.

The accumulated ACKs are:

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>

Regards,
Christian