linux-kernel - Re: [PATCH 4.19 05/87] sched/core: Dont skip remote tick for idle CPUs

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Date:   Wed, 4 Mar 2020 18:17:15 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Pavel Machek <pavel@...x.de>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Scott Wood <swood@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>, Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 4.19 05/87] sched/core: Dont skip remote tick for idle
 CPUs

On Wed, Mar 04, 2020 at 04:15:59PM +0100, Pavel Machek wrote:
> Hi!
> 
> > [ Upstream commit 488603b815a7514c7009e6fc339d74ed4a30f343 ]
> > 
> > This will be used in the next patch to get a loadavg update from
> > nohz cpus.  The delta check is skipped because idle_sched_class
> > doesn't update se.exec_start.
> 
> I don't see the next patch queued for 4.19-stable. AFAICT this does
> not fix anything without the subsequent patch?

Ah, good catch, that patch only made it into 5.4.y and 5.5.y, I'll drop
this from the 4.19 queue, thanks.

greg k-h