Received: by 2002:a25:e7d8:0:0:0:0:0 with SMTP id e207csp2848864ybh; Mon, 9 Mar 2020 14:26:31 -0700 (PDT) X-Google-Smtp-Source: ADFU+vvc/HZs26GxOpzkEJNBeVdPX1ZIPSG8aWJOH4N9CnlUK4I79SQgMBUd8/Sgj1jtuJhilgqz X-Received: by 2002:a9d:5a92:: with SMTP id w18mr14707625oth.292.1583789190977; Mon, 09 Mar 2020 14:26:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1583789190; cv=none; d=google.com; s=arc-20160816; b=ICATXMmyYH+GsuXCt7JqkVDEWLdNAnuL8l4puiUAfehHGjIC25TIhmREIGmi9Drlvp hNwJproN6YTPkTPuX+NxgnuEsbmTTi+SH4fwX3WiOpiuUXlT6MXtXdXltdwD5csZppZ7 0Xx7O8w7kVkaO799jYR/tbt8+y+Z7FqrX5hE++U8XfEsMi+BbVRsmAW5dm1pKjC0fFWC OFHEvGmWwOPBpZx9ZoMYf8CfeBWNwJghGctRqmtSYSH/Ed9cotH1v5bjvNvjo5xiXsu0 NCozWWMb3FXgzdoK0Da9EkJmHiQlP9MP4Zq6GZ3Tnl/3XISH1zSc0gRtLFkXZS7tPTqX g/sg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:reply-to:message-id :subject:cc:to:from:date:dkim-signature; bh=32EQrpcvOb/T1tj9eFYyjIAUnqreLjp8cGvndQFavTk=; b=WxxxNE8wCOurKZ+wbUki37WNgb/oSkUyDptwxpBm8iNhxX4S+aCjSbfBJcpaLsooHd Z9e12rn8ABs0+aSTXcg927CbqM9D7NggsxZD4lHzLSTv7zI2s2LwFEK/SSuF7K3zIWPp cml7I9++UYp3NBsR0hccI9hhR7TA3+QNTaQtiHZIVEX35pDn+bYKPFUY0eFinuODuUdo kZtsQRBcpYsWI/oO4Zs02URvaPlfGO/bVNNL/OQSqIk91UgeIqddLXzJiVpR/Pxu9cZU N64LkeAJvBcIlZp1ZHJu49sVNHZE4KyQiJghBYi1jHMdQ3QVapjzDEO4/HpY9U2WG+at sAzQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=fGWUkGD2; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a205si4530733oif.159.2020.03.09.14.26.16; Mon, 09 Mar 2020 14:26:30 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=fGWUkGD2; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726508AbgCIVZl (ORCPT + 99 others); Mon, 9 Mar 2020 17:25:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:38656 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726118AbgCIVZl (ORCPT ); Mon, 9 Mar 2020 17:25:41 -0400 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BEB4D24649; Mon, 9 Mar 2020 21:25:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583789140; bh=4ijyWSSxC94KiyiVpAgewDVgm3OYlVLJsPEZIanHANA=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=fGWUkGD2WRdYJfopM72ugAJcMZLQTonjIoudRt5Pb38LVX1OOhjFEqrBDuVdoMLgZ JD56jgTuQB6iCjLqluR1xE1GzFsJPD03MGJpTuvyX7ZrepjDxG7TNw/LAVKJbSAOTi 2c+tvBpHW6b0vKSdrVvoiyZgVoCYhCZUAU/PYrw4= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 9581B3522730; Mon, 9 Mar 2020 14:25:40 -0700 (PDT) Date: Mon, 9 Mar 2020 14:25:40 -0700 From: "Paul E. McKenney" To: Steven Rostedt Cc: Thomas Gleixner , LKML , Peter Zijlstra , Masami Hiramatsu , Alexei Starovoitov , Mathieu Desnoyers , Joel Fernandes , Frederic Weisbecker Subject: Re: Instrumentation and RCU Message-ID: <20200309212540.GV2935@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <87mu8p797b.fsf@nanos.tec.linutronix.de> <20200309204710.GU2935@paulmck-ThinkPad-P72> <20200309165811.05603ce0@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200309165811.05603ce0@gandalf.local.home> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 09, 2020 at 04:58:11PM -0400, Steven Rostedt wrote: > On Mon, 9 Mar 2020 13:47:10 -0700 > "Paul E. McKenney" wrote: > > > Yeah, I know. Just what the kernel doesn't need, yet another variant > > of RCU... > > And call this variant: yarcu (Yet Another RCU) (pronounced yar-ku ?) I was thinking in terms of rcu_read_lock_trace(), but hey! Thanx, Paul