linux-kernel - Re: [PATCH v4 05/10] sched/topology: Define and assign sched

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Date:   Tue, 04 Aug 2020 12:12:57 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     peterz@...radead.org
Cc:     linux-kernel@...r.kernel.org, mingo@...nel.org,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        morten.rasmussen@....com, Quentin Perret <qperret@...gle.com>
Subject: Re: [PATCH v4 05/10] sched/topology: Define and assign sched_domain flag metadata


On 04/08/20 12:08, peterz@...radead.org wrote:
> On Fri, Jul 31, 2020 at 12:54:57PM +0100, Valentin Schneider wrote:
>> +/*
>> + * Domain members share CPU capacity (i.e. SMT)
>> + *
>> + * SHARED_CHILD: Set from the base domain up until spanned CPUs no longer share
>> + * CPU capacity.
>> + */
>> +SD_FLAG(SD_SHARE_CPUCAPACITY,   6, SDF_SHARED_CHILD)
>> +
>> +/*
>> + * Domain members share CPU package resources (i.e. caches)
>> + *
>> + * SHARED_CHILD: Set from the base domain up until spanned CPUs no longer share
>> + * the same cache(s).
>> + */
>> +SD_FLAG(SD_SHARE_PKG_RESOURCES, 7, SDF_SHARED_CHILD)
>
> We should probably rename these to SD_SHARE_CORE / SD_SHARE_CACHE or
> something,

SD_SHARE_CACHE sounds good, given how it's used (LLC stuff).

> but let me first go through this series (and hopefully apply)
> before we go make more changes.
>
>
> .. onwards!

Thanks!