Received: by 10.223.185.116 with SMTP id b49csp3847135wrg; Tue, 13 Feb 2018 08:37:56 -0800 (PST) X-Google-Smtp-Source: AH8x227C7ZAT6knyhAkt4sCIlgzjLedhlhTd7E/0S1fhgB6mStL1G5qi+YFBYtsrWTFUGLucIUGV X-Received: by 10.98.34.15 with SMTP id i15mr1802565pfi.168.1518539876303; Tue, 13 Feb 2018 08:37:56 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518539876; cv=none; d=google.com; s=arc-20160816; b=nXzQ29DGHbblK0AbDnAtwyRWZoHZ+8e7AW8Pj6BkDAPx7L2cTC1+XxTaYJrC6fkYuo WYg+LhJpooi7WDh6mSjAK8Ov8wpFet8nfcWp92ajXhm0WnFEbqpGhHxqzMUjfNwu8ype mEu0DAHgd5F2MtRdFtTqAi3iMj1Wu92ASE+z368hhLvs3f7M1uFy/ie6SZPN0BcDaKY1 QdYzXpzK1vN4LIYyOv71tl/BGfd9B94jBDsR0REJJXxJtyaOppsqPv9rj+2hPTPG8i5W hZz+15SO6rtvdIVL3yz947MV4pSmOQjT/dJMU0RNoDe5H3dRQFWZK3Yl2bfvg5XXACT4 Hg0g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date :arc-authentication-results; bh=037csXBB3LCfdOKu1DmBCoWrl9uar43xk3nzONbue88=; b=BLMRmOoXagoxfo+yWc7UO9DHiS/ucK2qxvSrQVqPIEVrY/E9vrSgupBBOubea+A004 lZcBeuCui1YFRmOL3lAXy8u/uM+4F/btO+kGnTDRCQgzBGUOWQrvzgb7EfBSAPb8D59N Up2LVXCP3b6lS5LlPwOOwTz4ynuN3/SUOJArcubTyuyiROCvRhDXEYgnzMFFfCPzHeQ8 bGUyu/lhtJGbxH/Bic179sOxJnWQdN1ORCesk3TcR7IJY5wmQMpnRmtYjCPip5pvCKox UGMx+6t7HFhkNefekYFoc7WDxK7Y7+zeMpAgbMrw9miwkb8fxRZ03t2DcTFhM3R5sBaK 5Lcw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id f34-v6si247796ple.102.2018.02.13.08.37.41; Tue, 13 Feb 2018 08:37:56 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934843AbeBMQgl (ORCPT + 99 others); Tue, 13 Feb 2018 11:36:41 -0500 Received: from Galois.linutronix.de ([146.0.238.70]:51029 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934210AbeBMQgk (ORCPT ); Tue, 13 Feb 2018 11:36:40 -0500 Received: from hsi-kbw-5-158-153-52.hsi19.kabel-badenwuerttemberg.de ([5.158.153.52] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtpsa (TLS1.2:DHE_RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1eldW6-0005B3-Gl; Tue, 13 Feb 2018 17:33:14 +0100 Date: Tue, 13 Feb 2018 17:36:34 +0100 (CET) From: Thomas Gleixner To: Sebastian Andrzej Siewior cc: David Miller , edumazet@google.com, torvalds@linux-foundation.org, efault@gmx.de, peterz@infradead.org, dima@arista.com, frederic@kernel.org, linux-kernel@vger.kernel.org, 0x7f454c46@gmail.com, akpm@linux-foundation.org, fweisbec@gmail.com, hannes@stressinduktion.org, mingo@kernel.org, alexander.levin@verizon.com, pabeni@redhat.com, paulmck@linux.vnet.ibm.com, rrendec@arista.com, riel@redhat.com, sgruszka@redhat.com, wanpeng.li@hotmail.com Subject: Re: [RFC 1/2] softirq: Defer net rx/tx processing to ksoftirqd context In-Reply-To: <20180206165649.cze4iy4k36rcigbe@breakpoint.cc> Message-ID: References: <20180117.172447.1568697383040902713.davem@davemloft.net> <20180206165649.cze4iy4k36rcigbe@breakpoint.cc> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 6 Feb 2018, Sebastian Andrzej Siewior wrote: > On 2018-01-17 17:24:47 [-0500], David Miller wrote: > > From: Eric Dumazet > > Date: Wed, 17 Jan 2018 14:02:43 -0800 > > > There is also the netif_rx_ni() stuff. > > > > > > Can't remember right now why it is not using > > > local_bh_{diable,enable}() pair instead > > > of preempt_disable() ... if (local_softirq_pending()) do_softirq(); > > > > Hmmm, that code predates the initial GIT repository build. > > > > I do remember we had some back and forth with that stuff. > > So I did a little research and tried to replace preempt_disable() with > local_bh_disable() [0] a while ago. > > [0] https://lkml.kernel.org/r/20170616172400.10809-1-bigeasy@linutronix.de Maybe you should just try again with a slightly better changelog :)