Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965059AbXFFGe6 (ORCPT ); Wed, 6 Jun 2007 02:34:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758958AbXFFGev (ORCPT ); Wed, 6 Jun 2007 02:34:51 -0400 Received: from e31.co.us.ibm.com ([32.97.110.149]:39854 "EHLO e31.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758712AbXFFGeu (ORCPT ); Wed, 6 Jun 2007 02:34:50 -0400 Date: Wed, 6 Jun 2007 12:12:28 +0530 From: Srivatsa Vaddagiri To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Linus Torvalds , Andrew Morton , Mike Galbraith , Arjan van de Ven , Thomas Gleixner , Balbir Singh , Dmitry Adamushko Subject: Re: [patch] CFS scheduler, -v15 Message-ID: <20070606064228.GA22443@in.ibm.com> Reply-To: vatsa@in.ibm.com References: <20070531150908.GA23538@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070531150908.GA23538@elte.hu> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 866 Lines: 22 On Thu, May 31, 2007 at 05:09:08PM +0200, Ingo Molnar wrote: > i'm pleased to announce release -v15 of the CFS scheduler patchset. Do I smell a bug when a task switches its scheduling classes? Lets say a task was in real-time class for a long time and switches to fair-sched class. When update_curr() is called on this new fair-sched task, some of required fields (for ex: exec_start) are uninitialized and can lead to bogus calculations? Also, real-time tasks are currently influencing fair clock calculations (because there is only one raw_weighted_load field per runqueue). Is that intentional? -- Regards, vatsa - 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/