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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0E6FDCCD18E for ; Tue, 14 Oct 2025 20:50:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Owner; bh=1mt7hrsHnt06SvjuPDDWU079eVk0nFE4tzseKt8Vbpk=; b=urncyu7Qh6vh1x n81qTUGQrF9A2y81wn9kbzrapOqhC21oQEI9GvV2f6BplkqekxAtQ5KIIznIKmQky9en4lANKrc4H XGAPflh2ulapsxjg/G/ENx1Wda/o5zmIr87fRZGI0Mp/ncyjPwNofBYEKdSpleEciTlUya5E8Fgxh LXNCzUBijpSx2Hsi4X9IZvrdv6QRkxPgpqujBXyk8DjrGT3nQlu8CiX06xl6OExRfG5W7Jiy1gxA3 DorPADF0Ng0lWDUfc1/1EPtd39j5OoxX7pUPKP4w0Ij6G2W+A+W+Tt+Nlc4W+y5vm15YWvsEMZp+k RP0ePLG+sxd2g+C3HVEg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8lyi-0000000HODm-0bh5; Tue, 14 Oct 2025 20:50:40 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1v8lye-0000000HOBR-3T8i for linux-arm-kernel@lists.infradead.org; Tue, 14 Oct 2025 20:50:38 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 95BB940A85; Tue, 14 Oct 2025 20:50:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45767C4CEE7; Tue, 14 Oct 2025 20:50:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1760475035; bh=5rxoTWolHOm4oraQzi00YA/zUXuac4iY3HiED5t3UAw=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=axsarSWx827Fh8I2C7WoflR8ZEe8mbgEs9R6CNEb6ECRF5VzvbWJ7lxhJgY29BVla 00hCz190I4TJB55vPEw8SOgjqeKIwZNiDizKvjrSRahk1tH4/0AZQwjEGe6AFvBQW7 KMeLDw8WmfkNZa/bigvyqkE8GtU9qkyFABpYhCWiuxdm4ZxzvEPywsTf5N66DmsQpT OK747OQH2ZOYXfuDc5kNybLckElodrxrtoImcUoDyIeBQJ3xD4cAtL9fAycICL2Oeo VVEnQeIDZi1UX4ffYitoGKZ/qhA4CW0Ud24/ggKohRDgxpn3zp1xwRgHW83PZ6s3pf Cz5dN01+ANVYw== Date: Tue, 14 Oct 2025 15:50:34 -0500 From: Bjorn Helgaas To: Frederic Weisbecker Cc: LKML , Michal =?utf-8?Q?Koutn=C3=BD?= , Andrew Morton , Bjorn Helgaas , Catalin Marinas , Danilo Krummrich , "David S . Miller" , Eric Dumazet , Gabriele Monaco , Greg Kroah-Hartman , Ingo Molnar , Jakub Kicinski , Jens Axboe , Johannes Weiner , Lai Jiangshan , Marco Crivellari , Michal Hocko , Muchun Song , Paolo Abeni , Peter Zijlstra , Phil Auld , "Rafael J . Wysocki" , Roman Gushchin , Shakeel Butt , Simon Horman , Tejun Heo , Thomas Gleixner , Vlastimil Babka , Waiman Long , Will Deacon , cgroups@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-mm@kvack.org, linux-pci@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH 16/33] PCI: Flush PCI probe workqueue on cpuset isolated partition change Message-ID: <20251014205034.GA906667@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251013203146.10162-17-frederic@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251014_135036_888580_820383FE X-CRM114-Status: GOOD ( 11.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Oct 13, 2025 at 10:31:29PM +0200, Frederic Weisbecker wrote: > The HK_TYPE_DOMAIN housekeeping cpumask is now modifyable at runtime. In > order to synchronize against PCI probe works and make sure that no > asynchronous probing is still pending or executing on a newly made > isolated CPU, the housekeeping susbsystem must flush the PCI probe > works. > > However the PCI probe works can't be flushed easily since they are > queued to the main per-CPU workqueue pool. > > Solve this with creating a PCI probe specific pool and provide and use > the appropriate flushing API. s/modifyable/modifiable/ s/newly made isolated/newly isolated/ s/susbsystem/subsystem/ s/PCI probe specific pool/PCI probe-specific pool/