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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 537DFC433E0 for ; Fri, 29 May 2020 22:28:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EB6E208E4 for ; Fri, 29 May 2020 22:28:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728451AbgE2W2c (ORCPT ); Fri, 29 May 2020 18:28:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:56390 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726555AbgE2W2a (ORCPT ); Fri, 29 May 2020 18:28:30 -0400 Received: from oasis.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (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 4829B20897; Fri, 29 May 2020 22:28:29 +0000 (UTC) Date: Fri, 29 May 2020 18:28:27 -0400 From: Steven Rostedt To: Peter Zijlstra Cc: tglx@linutronix.de, luto@amacapital.net, linux-kernel@vger.kernel.org, x86@kernel.org, Lai Jiangshan , sean.j.christopherson@intel.com, andrew.cooper3@citrix.com, daniel.thompson@linaro.org, a.darwish@linutronix.de, bigeasy@linutronix.de Subject: Re: [PATCH 13/14] lockdep: Prepare for NMI IRQ state tracking Message-ID: <20200529182827.64a5f58d@oasis.local.home> In-Reply-To: <20200529222505.GW2483@worktop.programming.kicks-ass.net> References: <20200529212728.795169701@infradead.org> <20200529213321.471984676@infradead.org> <20200529181401.1f01bdc5@oasis.local.home> <20200529222505.GW2483@worktop.programming.kicks-ass.net> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 30 May 2020 00:25:05 +0200 Peter Zijlstra wrote: > > > + if (DEBUG_LOCKS_WARN_ON(current->lockdep_recursion & LOCKDEP_RECURSION_MASK)) > > > return; > > ^^ there's your regular recursion check. Yes, but this is more of a "bug if it happens" than just "ignore it". -- Steve