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[2620:137:e000::1:20]) by mx.google.com with ESMTP id hc38-20020a17090716a600b006df76385d6esi13599371ejc.526.2022.03.22.15.03.02; Tue, 22 Mar 2022 15:03:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=qr7pyXMu; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235368AbiCVNVh (ORCPT + 99 others); Tue, 22 Mar 2022 09:21:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39504 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234779AbiCVNVf (ORCPT ); Tue, 22 Mar 2022 09:21:35 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 037D469CDA; Tue, 22 Mar 2022 06:20:07 -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 ams.source.kernel.org (Postfix) with ESMTPS id D02D1B81C94; Tue, 22 Mar 2022 13:20:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D58B5C340EC; Tue, 22 Mar 2022 13:20:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1647955204; bh=GEP1hA952KtJkcY3mrrjdwlTd5xU8O8M7KG/kyoH+p8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qr7pyXMuaUdXxZF0V13kF5lL33LBkzJ1/elTp31hNhcj6wY51NTdwGzMoSjolSujO p2RFS8ljwNC8oZPOw74TZ7rD8FqZJsXCz6SFEa908GOiGcCoDP2DWHfN9sgUxGRLFc RnSirtJem5EaZg4DgM8C6IA5tMrwiICWxFryfXWXefatQtf7jaYB4UU7BOQYMarCqR /XDHqvMf1xrLRKIVsf/u9tBcaqD+jj6Xz4l9Eovmva7h30fNoRHQMBu4ixze7TBS/l 5XNUsBIUqok/jtNsY8cyvqkAmdaq74IEVpRviQ0vm5jVG+vqxuiJh4BaIsRId9jVsZ zX56FAhQJc1zQ== Date: Tue, 22 Mar 2022 14:20:01 +0100 From: Frederic Weisbecker To: Zqiang Cc: paulmck@kernel.org, rcu@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 0/2] rcu: Deoffload rdp if rcuop/rcuog kthreads spawn failed Message-ID: <20220322132001.GA705324@lothringen> References: <20220322131753.1680329-1-qiang1.zhang@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220322131753.1680329-1-qiang1.zhang@intel.com> X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 22, 2022 at 09:17:51PM +0800, Zqiang wrote: > When CONFIG_RCU_NOCB_CPU is enabled and 'rcu_nocbs' is set, the rcuop > and rcuog kthreads is created. however the rcuop or rcuog kthreads > creation may fail, if failed, deoffload the offloaded rdp. Thanks! I'm queuing these. I might split things and reword a bit. Also I'll put the second patch first, otherwise bisection will be broken.