Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752208Ab3ILOQb (ORCPT ); Thu, 12 Sep 2013 10:16:31 -0400 Received: from mail-wg0-f42.google.com ([74.125.82.42]:45403 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751029Ab3ILOQa (ORCPT ); Thu, 12 Sep 2013 10:16:30 -0400 Date: Thu, 12 Sep 2013 16:16:27 +0200 From: Frederic Weisbecker To: Christoph Lameter Cc: Andrew Morton , Gilad Ben-Yossef , Thomas Gleixner , Mike Frysinger , linux-kernel@vger.kernel.org, "Paul E. McKenney" Subject: Re: [RFC] Restrict kernel spawning of threads to a specified set of cpus. Message-ID: <20130912141625.GA23357@somewhere> References: <00000140efbcb701-c26320b3-f434-4538-bc80-8e92fed6f303-000000@email.amazonses.com> <20130911220228.GB15367@somewhere> <000001411282afa6-fe9c0543-0447-492b-991e-dc8214884b88-000000@email.amazonses.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000001411282afa6-fe9c0543-0447-492b-991e-dc8214884b88-000000@email.amazonses.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 612 Lines: 15 On Thu, Sep 12, 2013 at 02:10:56PM +0000, Christoph Lameter wrote: > On Thu, 12 Sep 2013, Frederic Weisbecker wrote: > > > Why not do this from userspace instead? > > Because the cpumasks are hardcoded in the kernel code. > Ok but you can change the affinity of a kthread from userspace, as long as you define a cpu set that is among that kthread's cpus allowed. -- 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/