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Date:   Mon, 29 Jan 2018 16:39:08 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Frederic Weisbecker <frederic@kernel.org>
Cc:     Ingo Molnar <mingo@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Chris Metcalf <cmetcalf@mellanox.com>,
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        Wanpeng Li <kernellwp@gmail.com>,
        Mike Galbraith <efault@gmx.de>, Rik van Riel <riel@redhat.com>
Subject: Re: [PATCH 4/6] sched/isolation: Residual 1Hz scheduler tick offload
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On Fri, Jan 19, 2018 at 01:02:18AM +0100, Frederic Weisbecker wrote:
> +	queue_delayed_work(system_unbound_wq, dwork, HZ);

Also, why HZ ? No clues were given.