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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 20C76C433DB for ; Thu, 25 Feb 2021 11:13:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C6C9064F0F for ; Thu, 25 Feb 2021 11:13:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234136AbhBYLNR (ORCPT ); Thu, 25 Feb 2021 06:13:17 -0500 Received: from foss.arm.com ([217.140.110.172]:54228 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233501AbhBYLMC (ORCPT ); Thu, 25 Feb 2021 06:12:02 -0500 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 69B55113E; Thu, 25 Feb 2021 03:11:17 -0800 (PST) Received: from e113632-lin (e113632-lin.cambridge.arm.com [10.1.194.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 4E5FD3F73D; Thu, 25 Feb 2021 03:11:16 -0800 (PST) From: Valentin Schneider To: Peter Zijlstra Cc: Ingo Molnar , Thomas Gleixner , Vincent Guittot , Mel Gorman , Dietmar Eggemann , linux-kernel@vger.kernel.org, Andi Kleen Subject: Re: [PATCH 6/6] sched: Simplify set_affinity_pending refcounts In-Reply-To: References: <20210224122439.176543586@infradead.org> <20210224131355.724130207@infradead.org> User-Agent: Notmuch/0.21 (http://notmuchmail.org) Emacs/26.3 (x86_64-pc-linux-gnu) Date: Thu, 25 Feb 2021 11:11:13 +0000 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 25/02/21 10:27, Peter Zijlstra wrote: > On Wed, Feb 24, 2021 at 05:59:01PM +0000, Valentin Schneider wrote: > >> Your change reinstores the "triple SCA" pattern, where a stopper can run >> with arg->pending && arg->pending != p->migration_pending, which I was >> kinda happy to see go away... > > Right, fair enough. Any workload that can tell the difference is doing > it wrong anyway :-) > > OK, I've munged your two patches together into the below. > Thanks! I haven't found much else to say on the series after having slept on it, so feel free to add: Reviewed-by: Valentin Schneider to the rest. I'll go see about testing it in some way.