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=-3.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT 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 3DDDBC43331 for ; Fri, 6 Sep 2019 03:13:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 47D49206DE for ; Fri, 6 Sep 2019 03:13:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=efficios.com header.i=@efficios.com header.b="kW2arRLE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404360AbfIFDNJ (ORCPT ); Thu, 5 Sep 2019 23:13:09 -0400 Received: from mail.efficios.com ([167.114.142.138]:40074 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390487AbfIFDNI (ORCPT ); Thu, 5 Sep 2019 23:13:08 -0400 Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id 39D6032CD6E; Thu, 5 Sep 2019 23:13:07 -0400 (EDT) Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10032) with ESMTP id GC6-ubqlKqoI; Thu, 5 Sep 2019 23:13:07 -0400 (EDT) Received: from localhost (ip6-localhost [IPv6:::1]) by mail.efficios.com (Postfix) with ESMTP id E32FC32CD65; Thu, 5 Sep 2019 23:13:06 -0400 (EDT) DKIM-Filter: OpenDKIM Filter v2.10.3 mail.efficios.com E32FC32CD65 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=efficios.com; s=default; t=1567739586; bh=7wE/bXua4x37URnFRoC5IpUkqr3wkvqpnzXNrSLxCNE=; h=From:To:Date:Message-Id; b=kW2arRLEXR8wnXWDNtq3oWbwVLbNdDxyQ+xUAnABfnsfACiUMTYectkRI2zyfgvCA KBO0f85Lg7kayl+7HE8/Bhq5Dv0Az4kRt6pbQb9vfR3hSbxNr1EOJwHC62QLwGQGNQ LjthS01tj1aOEvYhI5YRfEw801bn67MvOkBhzLT0bxXUrpFUBW3jDysKrXDDYYnLBI 3nzQQpZei9G5OqgpjeHPPPZDszsxFGnNtGbjUXxsYOJddmdKkEAWWMnbn2fbsEmhMQ hg8N8rMK+hKFSLLzlVIQIaoh9PJEVZTTmTh3ZFNLezq8/AAapWr2lIzR9DUaxZG7Nr gTQd2z/Za+4jw== X-Virus-Scanned: amavisd-new at efficios.com Received: from mail.efficios.com ([IPv6:::1]) by localhost (mail02.efficios.com [IPv6:::1]) (amavisd-new, port 10026) with ESMTP id 0Iar9-RX7Qmd; Thu, 5 Sep 2019 23:13:06 -0400 (EDT) Received: from localhost.localdomain (192-222-181-218.qc.cable.ebox.net [192.222.181.218]) by mail.efficios.com (Postfix) with ESMTPSA id 957D132CD5F; Thu, 5 Sep 2019 23:13:06 -0400 (EDT) From: Mathieu Desnoyers To: Peter Zijlstra , "Paul E. McKenney" Cc: Ingo Molnar , linux-kernel@vger.kernel.org, Oleg Nesterov , "Eric W. Biederman" , Linus Torvalds , Russell King - ARM Linux admin , Chris Metcalf , Christoph Lameter , Kirill Tkhai , Mike Galbraith , Thomas Gleixner , Mathieu Desnoyers Subject: [RFC PATCH 0/4] Membarrier fixes/cleanups Date: Thu, 5 Sep 2019 23:12:56 -0400 Message-Id: <20190906031300.1647-1-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series of fixes/cleanups is submitted for feedback. It takes care of membarrier issues recently discussed. Thanks, Mathieu Mathieu Desnoyers (4): Fix: sched/membarrier: private expedited registration check Cleanup: sched/membarrier: remove redundant check Cleanup: sched/membarrier: only sync_core before usermode for same mm Fix: sched/membarrier: p->mm->membarrier_state racy load include/linux/mm_types.h | 7 +- include/linux/sched/mm.h | 8 +-- kernel/sched/core.c | 1 + kernel/sched/membarrier.c | 141 +++++++++++++++++++++++++++----------- kernel/sched/sched.h | 33 +++++++++ 5 files changed, 143 insertions(+), 47 deletions(-) -- 2.17.1