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

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Message-ID: <4CE5C66F.3050300@zytor.com>
Date:	Thu, 18 Nov 2010 16:35:59 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Lennart Poettering <mzxreary@...inter.de>
CC:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Dhaval Giani <dhaval.giani@...il.com>,
	Mike Galbraith <efault@....de>,
	Vivek Goyal <vgoyal@...hat.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	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 11/16/2010 12:05 PM, Lennart Poettering wrote:
> On Tue, 16.11.10 19:08, Peter Zijlstra (a.p.zijlstra@...llo.nl) wrote:
> 
>>
>> On Tue, 2010-11-16 at 18:03 +0100, Lennart Poettering wrote:
>>> Binding something like this to TTYs is just backwards. No graphical
>>> session has a TTY attached anymore. And there might be multiple TTYs
>>> used in the same session. 
>>
>> Using a group per tty makes sense for us console jockeys..
> 
> Well, then maybe you shouldn't claim this was relevant for anybody but
> yourself. Because it is irrelevant for most users if it is bound to the TTY.
> 

For what it's worth, I suspect that the object that should be bound to
is probably not the tty, but rather the session ID of the process (which
generally is 1:1 with controlling TTY for console processes.)

	-hpa
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