From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A8AC3106B53F for ; Wed, 25 Mar 2026 13:58:31 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 1E9626B0005; Wed, 25 Mar 2026 09:58:31 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1C0EC6B008A; Wed, 25 Mar 2026 09:58:31 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0FDE56B008C; Wed, 25 Mar 2026 09:58:31 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id F08FE6B0005 for ; Wed, 25 Mar 2026 09:58:30 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 91AAE1B8B64 for ; Wed, 25 Mar 2026 13:58:30 +0000 (UTC) X-FDA: 84584740380.09.6712A1B Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) by imf23.hostedemail.com (Postfix) with ESMTP id 8C817140008 for ; Wed, 25 Mar 2026 13:58:28 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=desiato.20200630 header.b=JR3OsthR; spf=none (imf23.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.92.199) smtp.mailfrom=peterz@infradead.org; dmarc=pass (policy=none) header.from=infradead.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1774447109; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=0Wh5nuRIVjmmR3h1DHbl/7y/dEHsy8Ic5tYZGLWZU9U=; b=cnNLT3JrFBYZgVhOvF0DRV3yohYCvGhoGzWuyFOZL2xlPBHep6/NdZcxqNaKLQBLDo/DFo E39nS3Xa9QIUOvGn3qi6VYPGpC/IRzLxOKOOSd1lWfVo7WEPdbj1gzoLBgQCF6KTBeO1W0 VWIAWz/fAjCCrpxlyjcBOyZEubEPbMw= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1774447109; a=rsa-sha256; cv=none; b=x3aISJ4OWWyPUXiDujnBsGhBrjsGJ9H+umbnJF6NydwKW/t34Yi5UPcREEDNmzYZnBHoH1 n/Qc48h3mTYrWMG2KEoEJneizVbpsOtVzJEx+wTUUcSBBcyu4xswggsqpg7sV1kNb1CzXm klTSjm90P7Ggw2icokvh0Dsgp9t8Gvs= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=infradead.org header.s=desiato.20200630 header.b=JR3OsthR; spf=none (imf23.hostedemail.com: domain of peterz@infradead.org has no SPF policy when checking 90.155.92.199) smtp.mailfrom=peterz@infradead.org; dmarc=pass (policy=none) header.from=infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=0Wh5nuRIVjmmR3h1DHbl/7y/dEHsy8Ic5tYZGLWZU9U=; b=JR3OsthRB0FWUAQKcRzH6GOUYD G0lJgZ6r49/3yIaaPiy0bfMepMP+55l5tq1iETprIi/AociiRYj0JfsoypiQx3Tg26VUcFGELYHHS ILSSQoxQaRwl9QkCPKJrSYPQp2ttw+Q+8kEyum2trVSUYWs5Pfu84pm4VP5Ab/EpNNEn+ikvsgomU CH/xmi7rSzUQyoaKTRDsIE7gYzYiu7XcOtLY1oAVwLv6fQO4vMmsOBNNQXyhPlKHMsx3rcyM74MWM 7T3s03vGBYY1zVxVPvSjn9SpMc4jFxqbYa1g2+Klc7hHBqXO1uUB7CoeXfOUSrCx6cJ2wfHMk7S1j v8BKDhIQ==; Received: from 77-249-17-252.cable.dynamic.v4.ziggo.nl ([77.249.17.252] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98.2 #2 (Red Hat Linux)) id 1w5OkY-00000006Hv5-1bO9; Wed, 25 Mar 2026 13:58:22 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id D1C15300400; Wed, 25 Mar 2026 14:58:21 +0100 (CET) Date: Wed, 25 Mar 2026 14:58:21 +0100 From: Peter Zijlstra To: Qiliang Yuan Cc: Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Thomas Gleixner , "Paul E. McKenney" , Frederic Weisbecker , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Tejun Heo , Andrew Morton , Vlastimil Babka , Suren Baghdasaryan , Michal Hocko , Brendan Jackman , Johannes Weiner , Zi Yan , Anna-Maria Behnsen , Ingo Molnar , Shuah Khan , linux-kernel@vger.kernel.org, rcu@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH 02/15] sched/isolation: Introduce housekeeping notifier infrastructure Message-ID: <20260325135821.GA3738786@noisy.programming.kicks-ass.net> References: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> <20260325-dhei-v12-final-v1-2-919cca23cadf@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260325-dhei-v12-final-v1-2-919cca23cadf@gmail.com> X-Rspamd-Server: rspam12 X-Stat-Signature: rayxxxyqkgh9fd68pb3otgue9tepbyub X-Rspamd-Queue-Id: 8C817140008 X-Rspam-User: X-HE-Tag: 1774447108-217999 X-HE-Meta: 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 t5fjryLG HwyufIflBC3plVx1B7Z5o7IKd41zmQTe75tEd0wu3gmaK39pDH7MCiB4Rife3lBWhvqGSycjXrhqKyw8XHaBKpYDj1BjLFvKjt4sIx6QL6B1nHh3ZWFuQJx64jM18okWILAePSQ5F/NhfV3avsc6PxUjfHiWpQM3TJHNdZ7yCZsXQKSDWK4LZqt6t+Xhsh7yhyd9q8t7TiWj/AZ8lB2gMK7lZ4p9RuRL7uKr7hPA+Qqc++B/l+NfP/T2JZJdg92lrChF2cK7msVFWCDw/GjNpebZIUhpMmYlUYPwd Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Mar 25, 2026 at 05:09:33PM +0800, Qiliang Yuan wrote: > Subsystems currently rely on static housekeeping masks determined at > boot. Supporting runtime reconfiguration (DHEI) requires a mechanism > to broadcast mask changes to affected kernel components. Can we eradicate the whole DHEI naming please? It makes no sense.