Re: [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection

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To: Will Deacon <will@xxxxxxxxxx>
Subject: Re: [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection
From: Quentin Perret <qperret@xxxxxxxxxx>
Date: Mon, 23 Nov 2020 14:48:24 +0000
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Catalin Marinas <catalin.marinas@xxxxxxx>, Marc Zyngier <maz@xxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Morten Rasmussen <morten.rasmussen@xxxxxxx>, Qais Yousef <qais.yousef@xxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, Tejun Heo <tj@xxxxxxxxxx>, Li Zefan <lizefan@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Juri Lelli <juri.lelli@xxxxxxxxxx>, Vincent Guittot <vincent.guittot@xxxxxxxxxx>, kernel-team@xxxxxxxxxxx
In-reply-to: <20201119203906.GA5099@willie-the-truck>
References: <20201113093720.21106-1-will@kernel.org> <20201113093720.21106-11-will@kernel.org> <20201119093850.GD2416649@google.com> <20201119110709.GD3946@willie-the-truck> <20201119203906.GA5099@willie-the-truck>

On Thursday 19 Nov 2020 at 20:39:07 (+0000), Will Deacon wrote:
> Ah, so in doing this I realised I don't like arch_cpu_possible_mask() so
> much because it makes it sound like a back-end to cpu_possible_mask, but
> the two are really different things.
> 
> arch_task_cpu_possible_mask() might work?

Yes, making it explicit in the name that this is a task-specific thing
doesn't hurt.

Thanks,
Quentin

References:
- [PATCH v3 00/14] An alternative series for asymmetric AArch32 systems
  - From: Will Deacon
- [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection
  - From: Will Deacon
- Re: [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection
  - From: Quentin Perret
- Re: [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection
  - From: Will Deacon
- Re: [PATCH v3 10/14] sched: Introduce arch_cpu_allowed_mask() to limit fallback rq selection
  - From: Will Deacon

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