linux-kernel - Re: [RFC PATCH 2/5] sched: Add NOHZ_STATS

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Date:   Fri, 22 Dec 2017 08:59:34 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Brendan Jackman <brendan.jackman@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Morten Rasmussen <morten.rasmussen@....com>
Subject: Re: [RFC PATCH 2/5] sched: Add NOHZ_STATS_KICK

On Thu, Dec 21, 2017 at 05:56:32PM +0100, Vincent Guittot wrote:
> In fact, we can't only rely on the tick and newly_idle load balance to
> ensure a period update of the blocked load because they can never
> happen.

I'm confused, why would the ilb not happen?