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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 6A031C352A3 for ; Tue, 11 Feb 2020 13:20:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3356120714 for ; Tue, 11 Feb 2020 13:20:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581427234; bh=mVbt8YSJAqw5cLx22e6TTqh0mUQMRzZcOU8Pigm/Bv8=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=sbnmPhnQzFgPW6yyohzNEahI+74Z6EZxRTq1OVVCS5o7z9gx/9KDkN9doeHmbK7js KS0e1qoAoFoO9mVflOPjmzaKYmLdwz22a5P/g+y/3j8jQpUyOQZXBxRDiriwbw4qhb 3CYb6Cm06uRAn9TXb+Fit5NyHSooOrI6O374aTwg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728697AbgBKNUd (ORCPT ); Tue, 11 Feb 2020 08:20:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:39248 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728209AbgBKNUd (ORCPT ); Tue, 11 Feb 2020 08:20:33 -0500 Received: from paulmck-ThinkPad-P72.home (unknown [193.85.242.128]) (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 AF6C220675; Tue, 11 Feb 2020 13:20:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581427232; bh=mVbt8YSJAqw5cLx22e6TTqh0mUQMRzZcOU8Pigm/Bv8=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=d42wOYAIBewMVPiC+vDef2EglKNrt9DJRa1V3NBn6VXKaAHh3A9XtADvrelh0Zt7l +ppyN5IE4avT5hJK5t0z+9aEdqzQt3su3Flrpyq3ctNB3LqTXiRTqWVi2FqAsk/DB9 hZpr0PHbJydWbO9gjY4GJUaDMGUVs/KABgrPBsWM= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 59C5C3520CB5; Tue, 11 Feb 2020 05:20:30 -0800 (PST) Date: Tue, 11 Feb 2020 05:20:30 -0800 From: "Paul E. McKenney" To: Peter Zijlstra Cc: Steven Rostedt , LKML , Ingo Molnar , "Joel Fernandes (Google)" , Greg Kroah-Hartman , "Gustavo A. R. Silva" , Thomas Gleixner , Josh Triplett , Mathieu Desnoyers , Lai Jiangshan Subject: Re: [PATCH] tracing/perf: Move rcu_irq_enter/exit_irqson() to perf trace point hook Message-ID: <20200211132030.GI2935@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20200210170643.3544795d@gandalf.local.home> <20200211114954.GK14914@hirez.programming.kicks-ass.net> <20200211125929.GG2935@paulmck-ThinkPad-P72> <20200211131046.GR14914@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200211131046.GR14914@hirez.programming.kicks-ass.net> 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 Tue, Feb 11, 2020 at 02:10:46PM +0100, Peter Zijlstra wrote: > On Tue, Feb 11, 2020 at 04:59:29AM -0800, Paul E. McKenney wrote: > > > However, a quick grep for NMI_MASK didn't show me the NMI_MASK bit > > getting set. Help? > > | #define nmi_enter() \ > | do { \ > | arch_nmi_enter(); \ > | printk_nmi_enter(); \ > | lockdep_off(); \ > | ftrace_nmi_enter(); \ > | BUG_ON(in_nmi()); \ > | preempt_count_add(NMI_OFFSET + HARDIRQ_OFFSET); \ > > ^^^^ right there > > | rcu_nmi_enter(); \ > | trace_hardirq_enter(); \ > | } while (0) Color me blind, and thank you! Thanx, Paul