Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756533Ab0GAOz6 (ORCPT ); Thu, 1 Jul 2010 10:55:58 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:55555 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755462Ab0GAOz5 convert rfc822-to-8bit (ORCPT ); Thu, 1 Jul 2010 10:55:57 -0400 Subject: Re: [PATCH repost] sched: export sched_set/getaffinity to modules From: Peter Zijlstra To: Tejun Heo Cc: Oleg Nesterov , "Michael S. Tsirkin" , Ingo Molnar , Sridhar Samudrala , netdev , lkml , "kvm@vger.kernel.org" , Andrew Morton , Dmitri Vorobiev , Jiri Kosina , Thomas Gleixner , Andi Kleen In-Reply-To: <4C2CABF2.2020801@kernel.org> References: <1277983179.1917.10.camel@laptop> <1277984603.1917.15.camel@laptop> <20100701115507.GA31333@redhat.com> <20100701122340.GB31333@redhat.com> <1277987657.1917.32.camel@laptop> <1277988395.1917.47.camel@laptop> <20100701130816.GB32223@redhat.com> <1277991024.1917.108.camel@laptop> <20100701133956.GD32223@redhat.com> <4C2CA5C5.4040402@kernel.org> <20100701144624.GA11171@redhat.com> <4C2CABF2.2020801@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Date: Thu, 01 Jul 2010 16:55:35 +0200 Message-ID: <1277996135.1917.198.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 989 Lines: 23 On Thu, 2010-07-01 at 16:53 +0200, Tejun Heo wrote: > Hello, > > On 07/01/2010 04:46 PM, Oleg Nesterov wrote: > >> It might be a good idea to make the function take extra clone flags > >> but anyways once created cloned task can be treated the same way as > >> other kthreads, so nothing else needs to be changed. > > > > This makes kthread_stop() work. Otherwise the new thread is just > > the CLONE_VM child of the caller, and the caller is the user-mode > > task doing ioctl() ? > > Hmmm, indeed. It makes the attribute inheritance work but circumvents > the whole reason there is kthreadd. I thought the whole reason there was threadd was to avoid the inheritance? So avoiding the avoiding of inheritance seems like the goal here, no? -- 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/