From mboxrd@z Thu Jan  1 00:00:00 1970
From: Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH 6/9] sched/psi: save percpu memory when
 !psi_cgroups_enabled
Date: Mon, 25 Jul 2022 12:47:45 -0400
Message-ID: <Yt7JMfKHYFLGUGBb@cmpxchg.org>
References: <20220721040439.2651-1-zhouchengming@bytedance.com>
 <20220721040439.2651-7-zhouchengming@bytedance.com>
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To: Chengming Zhou <zhouchengming@bytedance.com>
Cc: surenb@google.com, mingo@redhat.com, peterz@infradead.org, tj@kernel.org, corbet@lwn.net, akpm@linux-foundation.org, rdunlap@infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, songmuchun@bytedance.com, cgroups@vger.kernel.org

On Thu, Jul 21, 2022 at 12:04:36PM +0800, Chengming Zhou wrote:
> We won't use cgroup psi_group when !psi_cgroups_enabled, so don't
> bother to alloc percpu memory and init for it.
> 
> Also don't need to migrate task PSI stats between cgroups in
> cgroup_move_task().
> 
> Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>