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 DE691C43441 for ; Tue, 13 Nov 2018 15:49:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A00712086B for ; Tue, 13 Nov 2018 15:49:34 +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="FqnQqw7l" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A00712086B 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 S2388054AbeKNBsL (ORCPT ); Tue, 13 Nov 2018 20:48:11 -0500 Received: from mail-qk1-f194.google.com ([209.85.222.194]:38946 "EHLO mail-qk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731721AbeKNBsL (ORCPT ); Tue, 13 Nov 2018 20:48:11 -0500 Received: by mail-qk1-f194.google.com with SMTP id q70so2663885qkh.6 for ; Tue, 13 Nov 2018 07:49:32 -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=gOAV0k2gvKfeb91puidkIzomn4EPqc9D+iWtYqWh1wg=; b=FqnQqw7lHxSVGOLBYEYli8jfN2D+DsX8vo9z5EvNDuRAqNGOkrpqOqTOcyj8cj7nIW CrgnbJ8RgADP3E8cvIBT2VIdJHB/LS3av0I/qt3skBSUVm3C8d0wGlL1Zl40FSJ8G6ED sMkuCJPS+aSSfp7Cza43n0jveKEwt1cZxao2dXAj58i8kQhMF+FZPvZY6JnztSwjl7S9 YYS+y1YKtvVS2Y322yyN84uqpFPvNkZromtRuw9gIEOz6J6r4C8RPl+oT/6hOKvkmrg6 vpn6toCca1n2xXM7be1wplXBDXoe0s2bbN2pKh/g5ng3mrLprYLSJ9jGNUujTfX1/Q+5 yT7g== 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=gOAV0k2gvKfeb91puidkIzomn4EPqc9D+iWtYqWh1wg=; b=Vh0tHz+nghLANrP4Wj1HMz9syMXS+DbVFPABXXZ9Ahva1ax5+tNbi4pjZFGGbQ5GZb WbtNOmXAoX3ElY5HaXx5YPybXS5AWU60OOrTiXJt6mefOwjsB5WXdrFYNldJC5vf9Gy7 DUznHmnHO0x4gpvleErhDL4niZbA0r6E+8zvZHZA8DA7ruHfcfoWWLcS78YuUwL4oux6 pPgH1QheIHLr/5IXBP248IDMARCP2/9qklFREZnJ+vZgO3HR4B4u9qXAGIxG1XMRfxDX E7LzRdaSrB/Pc6oK11ryPpL0k+Yx+1xJAFvyobI21Z6FiY+522XT6tKzE7qKtZNUAHXO 81Sw== X-Gm-Message-State: AGRZ1gLMBltNW1jklV/4AbWewCmFgP9/2WK8uhLIthipBavSru+InwuT eLHeb4tXiSDOTEOO1I90q30= X-Google-Smtp-Source: AJdET5cPG2oMhWpQKz9isdIFacx/bo+jgWphvG/dRqW6jC9wzNXnr70BHEjvPETQkvAoXcHcP5j4tg== X-Received: by 2002:a0c:9359:: with SMTP id e25mr5753964qve.203.1542124171783; Tue, 13 Nov 2018 07:49:31 -0800 (PST) Received: from localhost ([2620:10d:c091:200::6:e2a7]) by smtp.gmail.com with ESMTPSA id g5sm687810qkd.55.2018.11.13.07.49.30 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 13 Nov 2018 07:49:31 -0800 (PST) Date: Tue, 13 Nov 2018 07:49:28 -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, Dennis Zhou , Christoph Lameter Subject: Re: [PATCH tip/core/rcu 34/41] percpu-rwsem: Replace synchronize_sched() with synchronize_rcu() Message-ID: <20181113154928.GI2509588@devbig004.ftw2.facebook.com> References: <20181111194104.GA4787@linux.ibm.com> <20181111194410.6368-34-paulmck@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181111194410.6368-34-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 11:44:03AM -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: Dennis Zhou > Cc: Tejun Heo > Cc: Christoph Lameter Acked-by: Tejun Heo Thanks. -- tejun