From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA17A3822B5; Tue, 31 Mar 2026 09:39:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774949973; cv=none; b=U9xCY+01FFjuwLqijaJD5uh/Zt2KSdSo1QCDLGyxyw7jF9PUtWPhYKMnRGFsBQui2vSwZ1autQTEStT8WTLbFeZT/9pN32UT6RCidN+8MK9eoHaY0HoOGRiNNK0ZJGJUF5VY363Iu5d6gI10rLuhJsXX09JnALC/b2XatrwXOXY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774949973; c=relaxed/simple; bh=BLhBqZ3dvy+/k+BE7sIj/+ih1uPmppiKzXtrrL8OQ7c=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tKH+dNTfuHhEQoqMNiH/igpp74W0CLFjJZ5iTZCU2k7/tey32KlCEhRWo8CdvcHi+GKO8Fp4rLqw3vzlLNMC6RUxnMLJA9y7OBFGbIyGvmAy8budoEwdmKFmVfMeVD+xvU188qV6LVJhG1kzzSBvSPTYOvwkuU/6cAnn/MRBJgo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TBDGmWNN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TBDGmWNN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7361C2BCB0; Tue, 31 Mar 2026 09:39:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774949973; bh=BLhBqZ3dvy+/k+BE7sIj/+ih1uPmppiKzXtrrL8OQ7c=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=TBDGmWNNI0rjYGNQr3ld25h4CGuuCOPmh6/TFscaT5pT3nTJrNnALBiWYkkG9HhgX Z8D+bRzXWuIiip6lEfhjIcY1UST5helZGtSt+gRnvJnCiYCgdGoqtsVTiJIhb66bcJ dcu6f8xCOjaEcUE+pcU4ACxX4ZxdQbIaKsN5ziHCkNfv8OPcDHvgwv6dRgQifeNXbs Z/ttuv3CfskP69Cr/+WfIcrbVJrbcNU8VV5329ditHYcS92mISwcO0Qqb2Lhgcs+rl NvRGRTJK/3vcqZiXNghn1SR+KWSVodebBTL1Y4C6ZtXaKkaDgDsfpFoIaBqU/1oO3K G126pJ2ggyx3Q== Date: Tue, 31 Mar 2026 11:39:31 +0200 From: Frederic Weisbecker To: Qiliang Yuan Cc: Ingo Molnar , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , Thomas Gleixner , "Paul E. McKenney" , 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 08/15] workqueue: Support dynamic housekeeping mask updates Message-ID: References: <20260325-dhei-v12-final-v1-0-919cca23cadf@gmail.com> <20260325-dhei-v12-final-v1-8-919cca23cadf@gmail.com> Precedence: bulk X-Mailing-List: rcu@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260325-dhei-v12-final-v1-8-919cca23cadf@gmail.com> Le Wed, Mar 25, 2026 at 05:09:39PM +0800, Qiliang Yuan a écrit : > Unbound workqueues use HK_TYPE_WQ and HK_TYPE_DOMAIN to determine > their default CPU affinity. These boundaries are currently static and > only enforced during early boot. > > Implement a housekeeping notifier to update unbound workqueue affinity. > > This enables unbound workqueue tasks to respect dynamic isolation > boundaries at runtime. > > Signed-off-by: Qiliang Yuan This is already handled by HK_TYPE_DOMAIN with cgroup v2. Thanks. -- Frederic Weisbecker SUSE Labs