From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michal =?iso-8859-1?Q?Koutn=FD?= Subject: Re: [PATCH v11 3/8] cgroup/cpuset: Allow no-task partition to have empty cpuset.cpus.effective Date: Mon, 13 Jun 2022 16:02:06 +0200 Message-ID: <20220613140206.GA6910@blackbody.suse.cz> References: <20220510153413.400020-1-longman@redhat.com> <20220510153413.400020-4-longman@redhat.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="/04w6evG8XlLl3ft" Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1655128928; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=dH96i6OHzwC4qIcatlfFaUeHgKDc3G4KvUuOT69KD6U=; b=jKmUvylV66P3EkHqBQvMGTtVkWvt3Wx/VA/PZBaOos9trJT4344bWhR6bLjSmrFKY20UEl StmiA+zFdv2T74AbHfLh2YLHX7k3Vg9sqDrqaSJPEgdZHIWaU5wTS00B0KEGoy5/XNqkFT UQXWzd05W3OVdfDU/9WRQ8W9KcenvM0= Content-Disposition: inline In-Reply-To: List-ID: To: Tejun Heo Cc: Waiman Long , Zefan Li , Johannes Weiner , Jonathan Corbet , Shuah Khan , cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andrew Morton , Roman Gushchin , Phil Auld , Peter Zijlstra , Juri Lelli , Frederic Weisbecker , Marcelo Tosatti --/04w6evG8XlLl3ft Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Sun, Jun 12, 2022 at 04:55:13PM -1000, Tejun Heo wrote: > But how would that happen? A lot of other things would break too if that > were to happen. cpuset is a threaded controller where the internal-node-constraint does not hold. So the additional condition for cpuset migrations is IMO warranted (and needed if there's no "fall up"). Michal --/04w6evG8XlLl3ft Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- iHUEARYIAB0WIQTrXXag4J0QvXXBmkMkDQmsBEOquQUCYqdDXAAKCRAkDQmsBEOq uVxRAPwMiG5QiY65xj/WyfY3nCUyKyx+lDQh6bCpufc5IIQORgD9FIrNztTt7lmR ic79LsvKPERP5RiY2PezetNtf5xH9wA= =VnhP -----END PGP SIGNATURE----- --/04w6evG8XlLl3ft--