linux-kernel - Re: [PATCH 2/3] sched: Add aggressive load balancing for certain situations

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Message-Id: <1256471295.7356.13.camel@laptop>
Date:	Sun, 25 Oct 2009 12:48:15 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] sched: Add aggressive load balancing for certain
 situations

On Sun, 2009-10-25 at 09:01 +0100, Peter Zijlstra wrote:
> 
> > diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
> > index 4e777b4..fe9b95b 100644
> > --- a/kernel/sched_fair.c
> > +++ b/kernel/sched_fair.c
> > @@ -1246,7 +1246,7 @@ static int wake_affine(struct sched_domain *sd, struct task_struct *p, int sync)
> >   */
> >  static struct sched_group *
> >  find_idlest_group(struct sched_domain *sd, struct task_struct *p,
> > -               int this_cpu, int load_idx)
> > +               int this_cpu, int load_idx, int agressive)
> >  {
> 
> can't we fold that into load_idx? like -1 or something?

A better alternative might be passing imbalance along instead.

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