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From: Thomas Gleixner <tglx@linutronix.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@kernel.org>,
	linux-kernel@vger.kernel.org, jschoenh@amazon.de,
	oleg@redhat.com
Subject: Re: [PATCH] sched: Allow per-cpu kernel threads to run on online && !active
Date: Thu, 3 Mar 2016 18:45:11 +0100 (CET)	[thread overview]
Message-ID: <alpine.DEB.2.11.1603031840540.3597@nanos> (raw)
In-Reply-To: <alpine.DEB.2.11.1603031257320.3597@nanos>

On Thu, 3 Mar 2016, Thomas Gleixner wrote:

> On Thu, 3 Mar 2016, Peter Zijlstra wrote:
> > > +++ b/kernel/sched/core.c
> > > @@ -5726,23 +5726,6 @@ static int sched_cpu_active(struct notif
> > >  	case CPU_STARTING:
> > >  		set_cpu_rq_start_time();
> > 
> > If we stick that in notify_starting() we can kill all of this.
> 
> Yep. I'm going to kill that one by one :)

After I'm done fixing the wreckage which is caused by moving set_active()
alone. The numa and cpuset muck rely on it ....

But now that we can delay random workload on the upcoming/outgoing cpu we can
move that stuff alltogether.

Thanks,

	tglx

  reply	other threads:[~2016-03-03 17:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-01 15:23 Peter Zijlstra
2016-03-03 11:43 ` Thomas Gleixner
2016-03-03 11:55   ` Peter Zijlstra
2016-03-03 11:58     ` Thomas Gleixner
2016-03-03 17:45       ` Thomas Gleixner [this message]
2016-05-05 11:21 ` [tip:smp/hotplug] " tip-bot for Peter Zijlstra (Intel)
2016-05-06 13:03 ` tip-bot for Peter Zijlstra (Intel)

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