linux-kernel - Re: [PATCH] psi: fix aggregation idle shut-off

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Message-ID: <20190128230149.GW50184@devbig004.ftw2.facebook.com>
Date:   Mon, 28 Jan 2019 15:01:49 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] psi: fix aggregation idle shut-off

Hello,

On Wed, Jan 16, 2019 at 02:35:01PM -0500, Johannes Weiner wrote:
> +/**
> + * wq_worker_last_func - retrieve worker's last work function
> + *
> + * Determine the last function a worker executed. This is called from
> + * the scheduler to get a worker's last known identity.

Maybe it can describe better why this is safe in this use case and
not suitable as a generic interface but other than that,

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun