From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752986AbYIMQpZ (ORCPT ); Sat, 13 Sep 2008 12:45:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751982AbYIMQpP (ORCPT ); Sat, 13 Sep 2008 12:45:15 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:4094 "EHLO spitz.ucw.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751863AbYIMQpN (ORCPT ); Sat, 13 Sep 2008 12:45:13 -0400 Date: Sat, 13 Sep 2008 18:24:10 +0200 From: Pavel Machek To: Arjan van de Ven Cc: linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, dwmw2@infradead.org, drepper@redhat.com, mingo@elte.hu, tglx@tglx.de Subject: Re: [PATCH 12/13] hrtimer: create a "timer_slack" field in the task struct Message-ID: <20080913162409.GC6827@ucw.cz> References: <20080901160343.75a89ec9@infradead.org> <20080901161423.59ebf2fc@infradead.org> <20080902100439.GA11383@elf.ucw.cz> <20080902060323.70245b83@infradead.org> <20080908132713.GA18486@elf.ucw.cz> <20080908064002.7abc2a22@infradead.org> <20080908141555.GB31784@elf.ucw.cz> <20080908072220.75fc3dfd@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080908072220.75fc3dfd@infradead.org> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > Yes, it is a great advantage, but it feels like a hack. Maybe it is > > better done with LD_PRELOAD or something? > > that's not working very well in general, and doesn't work across exec > etc. LD_PRELOAD should work over exec... Another possibility would be to declare new syscalls, and have glibc automatically use select_slack(, foo) if GLIBC_SLACK=foo. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html