linux-kernel - Re: [PATCH 2/7] sched/fair: Add group_misfit

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Message-ID: <20180219135842.GM25235@hirez.programming.kicks-ass.net>
Date:   Mon, 19 Feb 2018 14:58:42 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Morten Rasmussen <morten.rasmussen@....com>
Cc:     mingo@...hat.com, valentin.schneider@....com,
        dietmar.eggemann@....com, vincent.guittot@...aro.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/7] sched/fair: Add group_misfit_task load-balance type

On Mon, Feb 19, 2018 at 02:56:44PM +0100, Peter Zijlstra wrote:
> On Thu, Feb 15, 2018 at 04:20:49PM +0000, Morten Rasmussen wrote:
> > @@ -6733,9 +6758,12 @@ done: __maybe_unused
> >  	if (hrtick_enabled(rq))
> >  		hrtick_start_fair(rq, p);
> >  
> > +	update_misfit_status(p, rq);
> > +
> >  	return p;
> >  
> >  idle:
> > +	update_misfit_status(NULL, rq);
> >  	new_tasks = idle_balance(rq, rf);
> >  
> >  	/*
> 
> So we set a point when picking a task (or tick). We clear said pointer
> when idle.

N/m, I can't read today. You only store the load, not the actual task.