linux-kernel - Re: [RFC PATCH v1 00/11] Create fast idle path for short idle periods

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Message-ID: <alpine.DEB.2.20.1707111258020.3575@east.gentwo.org>
Date:   Tue, 11 Jul 2017 12:58:41 -0500 (CDT)
From:   Christoph Lameter <cl@...ux.com>
To:     Frederic Weisbecker <fweisbec@...il.com>
cc:     Peter Zijlstra <peterz@...radead.org>,
        "Li, Aubrey" <aubrey.li@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Aubrey Li <aubrey.li@...el.com>, tglx@...utronix.de,
        len.brown@...el.com, rjw@...ysocki.net, tim.c.chen@...ux.intel.com,
        arjan@...ux.intel.com, paulmck@...ux.vnet.ibm.com,
        yang.zhang.wz@...il.com, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v1 00/11] Create fast idle path for short idle
 periods

On Tue, 11 Jul 2017, Frederic Weisbecker wrote:

> > --- a/kernel/time/tick-sched.c
> > +++ b/kernel/time/tick-sched.c
> > @@ -787,6 +787,7 @@ static ktime_t tick_nohz_stop_sched_tick(struct tick_sched *ts,
> >  	if (!ts->tick_stopped) {
> >  		calc_load_nohz_start();
> >  		cpu_load_update_nohz_start();
> > +		quiet_vmstat();
>
> This patch seems to make sense. Christoph?

Ok makes sense to me too. Was never entirely sure where the proper place
would be to call it.