linux-kernel - Re: [RFC PATCH 3/3] sched/fair: Traverse cpufreq policies to detect capacity inversion

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Message-ID: <b3d98e95-8ce6-dc3b-25dd-3d23af86c7c3@arm.com>
Date:   Tue, 20 Dec 2022 12:52:43 +0000
From:   Lukasz Luba <lukasz.luba@....com>
To:     Qais Yousef <qyousef@...alina.io>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux-kernel@...r.kernel.org, Wei Wang <wvw@...gle.com>,
        Xuewen Yan <xuewen.yan94@...il.com>,
        Hank <han.lin@...iatek.com>,
        Jonathan JMChen <Jonathan.JMChen@...iatek.com>
Subject: Re: [RFC PATCH 3/3] sched/fair: Traverse cpufreq policies to detect
 capacity inversion



On 12/20/22 11:51, Qais Yousef wrote:
> On 12/13/22 17:42, Lukasz Luba wrote:
>> Hi Qais,
>>
>> I thought I could help with this issue.
> 
> Thanks Lukasz!
> 
>>
>> On 12/12/22 18:43, Qais Yousef wrote:
>>> On 12/09/22 17:47, Vincent Guittot wrote:
>>>
>>> [...]
>>>

[snip]

>>
>> If you like I can develop and test such code in the arch_topology.c
> 
> As we discussed offline, Vincent is keen on decoupling the util_fits_cpu()
> logic from HMP - which means I need to reword this differently.

Fingers crossed!

> 
> Let's keep this in the back burner in case we need to revisit it again.
> 
> Appreciate the proposal!!

No worries!

Cheers,
Lukasz

> 
> 
> Many thanks
> 
> --
> Qais Yousef