From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752113AbcAEPeH (ORCPT ); Tue, 5 Jan 2016 10:34:07 -0500 Received: from mail-io0-f182.google.com ([209.85.223.182]:35498 "EHLO mail-io0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751498AbcAEPeF (ORCPT ); Tue, 5 Jan 2016 10:34:05 -0500 Subject: Re: [PATCH] Add possibility to set /dev/tty number To: Greg KH References: <20160104154305.GA24533@kroah.com> <568AA47D.6010604@gmail.com> <20160104171121.GA25961@kroah.com> <568ABCBD.3070909@gmail.com> <20160104225544.158dc847@lxorguk.ukuu.org.uk> <568BC244.5040207@gmail.com> <20160105152417.GB7251@kroah.com> Cc: One Thousand Gnomes , Pierre Paul MINGOT , jslaby@suse.cz, linux-kernel@vger.kernel.org From: "Austin S. Hemmelgarn" Message-ID: <568BE238.8010204@gmail.com> Date: Tue, 5 Jan 2016 10:33:12 -0500 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <20160105152417.GB7251@kroah.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Antivirus: avast! (VPS 160105-0, 2016-01-05), Outbound message X-Antivirus-Status: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2016-01-05 10:24, Greg KH wrote: > On Tue, Jan 05, 2016 at 08:16:52AM -0500, Austin S. Hemmelgarn wrote: >>> And those embedded devices can almost certainly save more by just not >>> including the vt layer. >> And a few pages can make a difference on _any_ device, not just an embedded >> system. For a purpose specific system, that can be the difference between >> fitting the working set in memory and having to hit swap space. > > No one has proven any memory savings yet, so why are you saying this is > noticable? I didn't mean to imply that the VT subsystem itself was necessarily responsible for any space savings, I simply intended to point out that savings of a few pages can make a difference. On that note though, I think I've got something that should work to check this across a couple of different configurations, so I'll hopefully have results soon.