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=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 93898C433E7 for ; Tue, 20 Oct 2020 07:56:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0754C22283 for ; Tue, 20 Oct 2020 07:56:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="M3bKZtd3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728875AbgJTH4b (ORCPT ); Tue, 20 Oct 2020 03:56:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727869AbgJTH4a (ORCPT ); Tue, 20 Oct 2020 03:56:30 -0400 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 34C26C061755 for ; Tue, 20 Oct 2020 00:56:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=/NecXBjeItf4pRKclRu3K3LlnUd4CLn2RBUj+pJiUCw=; b=M3bKZtd3aL3NmgAY+z2EyVfsX2 dlJ75pNrhquhpwNaCWWHIIdz3eHI/HWGGTfZh/C8P1VWTtB4gKlfoKxFm74gCwUnjU4AehVAdJc5o wtOsyHjdXMJ9lTNAbbjRKgZqWCx3GW/YNTIIDse3kpj1JCubRXTQhQKcxxB1B4PpQ/FrGdB5rjJRW sw3a+UHYiSZvn2EFCIfT5+tvGZgnj1AaRPGM9ur7+D/xgf9sdxzSq8+k7WP3NEtEeu07VuN1Vl7af vjnHBoLUkKQ/mPSYF0COLlidDZVaElD7pR/6XVrPEqc//gLUFPJAiTTnbbazG3tCFtsQGANjdeux+ 9jyPjPeg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kUmVE-0004CG-7I; Tue, 20 Oct 2020 07:56:16 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 68F513012C3; Tue, 20 Oct 2020 09:56:14 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 4EA8A2038FA06; Tue, 20 Oct 2020 09:56:14 +0200 (CEST) Date: Tue, 20 Oct 2020 09:56:14 +0200 From: Peter Zijlstra To: Tao Zhou Cc: Valentin Schneider , tglx@linutronix.de, mingo@kernel.org, linux-kernel@vger.kernel.org, bigeasy@linutronix.de, qais.yousef@arm.com, swood@redhat.com, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vincent.donnefort@arm.com, tj@kernel.org Subject: Re: [PATCH v3 10/19] sched: Fix migrate_disable() vs set_cpus_allowed_ptr() Message-ID: <20201020075614.GO2628@hirez.programming.kicks-ass.net> References: <20201015110532.738127234@infradead.org> <20201015110923.910090294@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org FYI Tao, I shared this with Valentin on IRC yesterday evening (we're both in Europe): https://paste.debian.net/1167885/ I'll be going over it again this morning with a (hopefully) fresh(er) mind.