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=-5.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,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 4634FC43441 for ; Tue, 13 Nov 2018 15:50:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0D1442086B for ; Tue, 13 Nov 2018 15:50:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Kdeake6V" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D1442086B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388071AbeKNBsp (ORCPT ); Tue, 13 Nov 2018 20:48:45 -0500 Received: from mail-qk1-f195.google.com ([209.85.222.195]:39092 "EHLO mail-qk1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731721AbeKNBso (ORCPT ); Tue, 13 Nov 2018 20:48:44 -0500 Received: by mail-qk1-f195.google.com with SMTP id q70so2667607qkh.6 for ; Tue, 13 Nov 2018 07:50:05 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=B4FDl8gF++ePL+rZRXgmtdo+s7tKVT/ZbykWmpI+HlQ=; b=Kdeake6Vtg4qV4zyz3IFquVZ3+cD7tK+5WYcsw7kbMYW5y2OsgK57uHHSZKeiu/RsZ AH1kQZrSBg3otdUt8IF1TRYzgXKoTXSUUdWoLP8XzpQw625o8AUMu2sUBWpjVhqFw/l9 DNM2xpwXDwtMv1tBejB2VLQjCFUMIYehAcEdi4LRkpUWRJXugkZ1dXp7okVguizqmRRl vtSfloed6Xrp5Oh3SG4LZwOs24W1GkERFqsDV8eGRMSog6zeq0fEFsvkzaeodeEzU2Zm 8Q5ZYEB0CZVpfLJgpqNkXZaIpOXuq4F1tA07aRSth11s9iSflMIkXt1MScPLXHeMZc49 wS/g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=B4FDl8gF++ePL+rZRXgmtdo+s7tKVT/ZbykWmpI+HlQ=; b=f2Mz6XqcGNKG+WnkrXHwEfVV22xhv3dhCAft/m3X4VP/xVkIsNCCfX+Hy6Ogp3BnvD XwfU1lly/kUHVT5Xl/cFskXl/EAK1Jv1X3FfmAG5Vvg9Sim38aj7Ry2P9gyqM+2x7j2J BIli3i7bwOBP3/iuJ2O45yTaWs4aE8oclgFT6EchOShlDOnY/tCgVERw+YkBicpMVy8O 3QT1oWssekBLyJFKlBst7CRnjqrGmYqO0ph7nxjeyKqshD4j5O17x0WjO+dF4gAJTSPT 58Bkxtk7un3bt6aeIIEPV/XhftBzdYvjg8YtumTvXF20XiucyAdBIBpTH69IlfiKlLYa Cw0Q== X-Gm-Message-State: AGRZ1gJyIA4pkIWIKCA56FiLTMNggA9nSCQDb9ntsHGLuuEpppC0IqA7 +dkgt9QVx5DXqEkUYDYy6yQ= X-Google-Smtp-Source: AJdET5fTQCA2HhohI+3XlTw0Di/gDHyBU9c4mttLex3Fi0rDpePq8kSrT3fBJC4ip/kBVULgyOoMXQ== X-Received: by 2002:a0c:87dd:: with SMTP id 29mr5868200qvk.212.1542124204959; Tue, 13 Nov 2018 07:50:04 -0800 (PST) Received: from localhost ([2620:10d:c091:200::6:e2a7]) by smtp.gmail.com with ESMTPSA id c77sm13931632qkh.82.2018.11.13.07.50.03 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 Nov 2018 07:50:03 -0800 (PST) Date: Tue, 13 Nov 2018 07:50:01 -0800 From: Tejun Heo To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, fweisbec@gmail.com, oleg@redhat.com, joel@joelfernandes.org, Jens Axboe , Dennis Zhou , Johannes Weiner , "Dennis Zhou (Facebook)" Subject: Re: [PATCH tip/core/rcu 36/41] cgroups: Replace synchronize_sched() with synchronize_rcu() Message-ID: <20181113155001.GJ2509588@devbig004.ftw2.facebook.com> References: <20181111194104.GA4787@linux.ibm.com> <20181111194410.6368-36-paulmck@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181111194410.6368-36-paulmck@linux.ibm.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 11, 2018 at 11:44:05AM -0800, Paul E. McKenney wrote: > Now that synchronize_rcu() waits for preempt-disable regions of code > as well as RCU read-side critical sections, synchronize_sched() can be > replaced by synchronize_rcu(). This commit therefore makes this change, > even though it is but a comment. > > Signed-off-by: Paul E. McKenney > Cc: Tejun Heo > Cc: Jens Axboe > Cc: Dennis Zhou > Cc: Johannes Weiner > Cc: "Dennis Zhou (Facebook)" Acked-by: Tejun Heo Thanks. -- tejun