Message-ID: <4CE5C66F.3050300@zytor.com>
Date: Thu, 18 Nov 2010 16:35:59 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Lennart Poettering <mzxreary@0pointer.de>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Dhaval Giani <dhaval.giani@gmail.com>, Mike Galbraith <efault@gmx.de>,
        Vivek Goyal <vgoyal@redhat.com>, Oleg Nesterov <oleg@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Markus Trippelsdorf <markus@trippelsdorf.de>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
        Balbir Singh <balbir@linux.vnet.ibm.com>
Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups
References: <1289820766.16406.45.camel@maggy.simson.net> <1289821590.16406.47.camel@maggy.simson.net> <20101115125716.GA22422@redhat.com> <1289856350.14719.135.camel@maggy.simson.net> <20101116015648.GA11534@redhat.com> <1289916171.5169.117.camel@maggy.simson.net> <1289916683.2109.625.camel@laptop> <AANLkTimun-VUNx77wJ4w7Z4io2jder=xkN5pCujPQL-a@mail.gmail.com> <20101116170312.GA19327@tango.0pointer.de> <1289930934.2109.644.camel@laptop> <20101116200546.GB27235@tango.0pointer.de>
In-Reply-To: <20101116200546.GB27235@tango.0pointer.de>
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On 11/16/2010 12:05 PM, Lennart Poettering wrote:
> On Tue, 16.11.10 19:08, Peter Zijlstra (a.p.zijlstra@chello.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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