Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261266AbUJWURL (ORCPT ); Sat, 23 Oct 2004 16:17:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261179AbUJWURK (ORCPT ); Sat, 23 Oct 2004 16:17:10 -0400 Received: from mx2.elte.hu ([157.181.151.9]:56044 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S261266AbUJWUQ4 (ORCPT ); Sat, 23 Oct 2004 16:16:56 -0400 Date: Sat, 23 Oct 2004 22:17:24 +0200 From: Ingo Molnar To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, karim@opersys.com, Dimitri Sivanich Subject: Re: [RFC][PATCH] Restricted hard realtime Message-ID: <20041023201724.GA23936@elte.hu> References: <20041023194721.GB1268@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20041023194721.GB1268@us.ibm.com> User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 681 Lines: 17 * Paul E. McKenney wrote: > + bool "Reserve a CPU for hard realtime processes" this has been implemented in a clean way already: check out the "isolcpus=" boot option & scheduler feature (implemented by Dimitri Sivanich) which isolates a set of CPUs via sched-domains for precisely such purposes. The way to enter such a domain is via the affinity syscall - and balancing will leave such domains isolated. ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/