linux-kernel - Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

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Date:	Sat, 20 Nov 2010 17:19:05 -0700
From:	Mike Galbraith <efault@....de>
To:	Mika Laitio <lamikr@...ppa.org>
Cc:	Lennart Poettering <mzxreary@...inter.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Vivek Goyal <vgoyal@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

On Sun, 2010-11-21 at 00:16 +0200, Mika Laitio wrote:
> > > What complexity? Have you looked at the patch? It has no complexity anywhere.
> > > 
> > > It's a _lot_ less complex than having system daemons you don't
> > > control. We have not had good results with that approach in the past.
> > > System daemons tend to cause nasty problems, and debugging them is a
> > > nightmare.
> > 
> > Well, userspace doesn't bite.
> 
> To me, this starts sounding like a legendary "userspace suspend" versus 
> "kernel suspend" support fights many years ago... 

Nah.  Patch accepted, rejected, obsoleted 10 minutes from now etc etc,
it'll never be a big deal.

	-Mike

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