From patchwork Wed May 10 17:06:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Paul E. McKenney" X-Patchwork-Id: 13237099 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 19D67C77B7D for ; Wed, 10 May 2023 17:06:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236370AbjEJRGX (ORCPT ); Wed, 10 May 2023 13:06:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235962AbjEJRGT (ORCPT ); Wed, 10 May 2023 13:06:19 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3676A19B3; Wed, 10 May 2023 10:06:02 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 951BE60ABF; Wed, 10 May 2023 17:06:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 011A0C433EF; Wed, 10 May 2023 17:06:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683738361; bh=O7xPHBuKYymEq9QfOs6J9G+s+CD0IysaluF7gPmpAC4=; h=Date:From:To:Cc:Subject:Reply-To:From; b=V3nPTiCB4dDVf7BsmRK9iPZ7hzc1NgVp38NjNBnWOPpPWSq6c8oa4Ax81kxbPxuS9 W98Bfmfp/l3aX1LQjcfxky1I4PYL86a7XStT7EypbWA795sCIfCrcWWg7HO+bXwr7W cS7PP2F2feKsa5q7aL7hXINkIF2Cd83YqjaonI3k5aO6jksfy0In/PdAvn/GrvIPIt Fo80GtIq5W2NYATKLJriKIBqfZzdk4JHVfMZ2+WS7DRRRDNOslszuTCdkC8GKctPY8 j9iK+fe3Bjc6Z32/lEEeEhnhDIb1I6IFYSkZJ2C9X3Tsp745SGlvfgTa0OC6z11iwr suoYr3c5Wjksg== Received: by paulmck-ThinkPad-P17-Gen-1.home (Postfix, from userid 1000) id 8656ACE126E; Wed, 10 May 2023 10:06:00 -0700 (PDT) Date: Wed, 10 May 2023 10:06:00 -0700 From: "Paul E. McKenney" To: rcu@vger.kernel.org Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com, rostedt@goodmis.org Subject: [PATCH rcu 0/4] Callback-offloading updates for v6.5 Message-ID: <9c5fae22-e25e-4548-b6e9-117495b29e62@paulmck-laptop> Reply-To: paulmck@kernel.org MIME-Version: 1.0 Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: rcu@vger.kernel.org Hello! This series provides some nocb callback-offloading updates: 1. rcu/nocb: Protect lazy shrinker against concurrent (de-)offloading, courtesy of Frederic Weisbecker. 2. rcu/nocb: Fix shrinker race against callback enqueuer, courtesy of Frederic Weisbecker. 3. rcu/nocb: Recheck lazy callbacks under the ->nocb_lock from shrinker, courtesy of Frederic Weisbecker. 4. rcu/nocb: Make shrinker to iterate only NOCB CPUs, courtesy of Frederic Weisbecker. Thanx, Paul ------------------------------------------------------------------------ b/kernel/rcu/tree_nocb.h | 25 ++++++++++++++++++++++++- kernel/rcu/tree_nocb.h | 33 ++++++++++++++++++++++++++------- 2 files changed, 50 insertions(+), 8 deletions(-)