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 X-Spam-Level: X-Spam-Status: No, score=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C346CC48BD6 for ; Wed, 26 Jun 2019 16:42:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9F3B720644 for ; Wed, 26 Jun 2019 16:42:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726368AbfFZQmE (ORCPT ); Wed, 26 Jun 2019 12:42:04 -0400 Received: from foss.arm.com ([217.140.110.172]:36934 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726006AbfFZQmD (ORCPT ); Wed, 26 Jun 2019 12:42:03 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EEB212B; Wed, 26 Jun 2019 09:42:02 -0700 (PDT) Received: from lakrids.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.121.207.14]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2C75D3F706; Wed, 26 Jun 2019 09:42:02 -0700 (PDT) Date: Wed, 26 Jun 2019 17:42:00 +0100 From: Mark Rutland To: "Paul E. McKenney" Cc: linux@arm.linux.org.uk, dietmar.eggemann@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH arm] Use common outgoing-CPU-notification code Message-ID: <20190626164159.GI20635@lakrids.cambridge.arm.com> References: <20190611192410.GA27930@linux.ibm.com> <20190617115809.GA3767@lakrids.cambridge.arm.com> <20190617130657.GL26519@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190617130657.GL26519@linux.ibm.com> User-Agent: Mutt/1.11.1+11 (2f07cb52) (2018-12-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 17, 2019 at 06:06:57AM -0700, Paul E. McKenney wrote: > On Mon, Jun 17, 2019 at 12:58:19PM +0100, Mark Rutland wrote: > > On Tue, Jun 11, 2019 at 12:24:10PM -0700, Paul E. McKenney wrote: > > > This commit removes the open-coded CPU-offline notification with new > > > common code. In particular, this change avoids calling scheduler code > > > using RCU from an offline CPU that RCU is ignoring. This is a minimal > > > change. A more intrusive change might invoke the cpu_check_up_prepare() > > > and cpu_set_state_online() functions at CPU-online time, which would > > > allow onlining throw an error if the CPU did not go offline properly. > > > > > > Signed-off-by: Paul E. McKenney > > > Cc: linux-arm-kernel@lists.infradead.org > > > Cc: Russell King > > > Cc: Mark Rutland > > > Tested-by: Dietmar Eggemann > > > > FWIW: > > > > Acked-by: Mark Rutland > > > > On the assumption that Russell is ok with this, I think this should be > > dropped into the ARM patch system [1]. > > > > Paul, are you familiar with that, or would you prefer that someone else > > submits the patch there? I can do so if you'd like. > > I never have used this system, so please do drop it in there! Let me > know when you have done so, and I will then drop it from -rcu. After testing that multi_v7_defconfig built, I've just submitted this as 8872/1: https://www.armlinux.org.uk/developer/patches/viewpatch.php?id=8872/1 Thanks, Mark.