linux-kernel - Re: [PATCH v3 4/7] sched/fair: Introduce a CPU capacity comparison helper

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Date:   Mon, 15 Mar 2021 19:24:37 +0000
From:   Valentin Schneider <valentin.schneider@....com>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Qais Yousef <qais.yousef@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Morten Rasmussen <morten.rasmussen@....com>,
        Quentin Perret <qperret@...gle.com>,
        Pavan Kondeti <pkondeti@...eaurora.org>,
        Rik van Riel <riel@...riel.com>,
        Lingutla Chandrasekhar <clingutla@...eaurora.org>
Subject: Re: [PATCH v3 4/7] sched/fair: Introduce a CPU capacity comparison helper

On 15/03/21 15:24, Vincent Guittot wrote:
>> @@ -113,6 +113,13 @@ int __weak arch_asym_cpu_priority(int cpu)
>>   */
>>  #define fits_capacity(cap, max)        ((cap) * 1280 < (max) * 1024)
>>
>> +/*
>> + * The margin used when comparing CPU capacities.
>> + * is 'cap1' noticeably greater than 'cap2'
>> + *
>> + * (default: ~5%)
>> + */
>> +#define capacity_greater(cap1, cap2) ((cap1) * 1024 > (cap2) * 1078)
>
> defined but not used.
>
> Should be merged with next patch which start to use it
>

Will do.