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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 499EDC1B0F1 for ; Wed, 20 Jun 2018 02:32:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F20A220874 for ; Wed, 20 Jun 2018 02:32:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F20A220874 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.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 S1754167AbeFTCc2 (ORCPT ); Tue, 19 Jun 2018 22:32:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:49130 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753917AbeFTCcZ (ORCPT ); Tue, 19 Jun 2018 22:32:25 -0400 Received: from vmware.local.home (cpe-66-24-56-78.stny.res.rr.com [66.24.56.78]) (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 CBBDE2086B; Wed, 20 Jun 2018 02:32:23 +0000 (UTC) Date: Tue, 19 Jun 2018 22:32:22 -0400 From: Steven Rostedt To: Sergey Senozhatsky Cc: Petr Mladek , Sergey Senozhatsky , Peter Zijlstra , Tetsuo Handa , linux-kernel@vger.kernel.org, "4 . 13+" Subject: Re: [PATCH] printk/nmi: Prevent deadlock when serializing NMI backtraces Message-ID: <20180619223222.6cf05e0b@vmware.local.home> In-Reply-To: <20180620015834.GD650@jagdpanzerIV> References: <20180605124729.3vix5nlkjpjzdljx@pathway.suse.cz> <20180606051029.GA19211@tigerII.localdomain> <20180606103356.GB19211@tigerII.localdomain> <20180608104825.e7xoxteelaxnwx66@pathway.suse.cz> <20180618063738.GC27996@jagdpanzerIV> <20180618093917.qeaatnlqh5if6t3r@pathway.suse.cz> <20180618100718.GA555@jagdpanzerIV> <20180619075219.iq7ztwu43bn4uua7@pathway.suse.cz> <20180619082716.GD405@jagdpanzerIV> <20180619092304.6b6ba390@gandalf.local.home> <20180620015834.GD650@jagdpanzerIV> X-Mailer: Claws Mail 3.15.1 (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 Wed, 20 Jun 2018 10:58:34 +0900 Sergey Senozhatsky wrote: > Which one of these you'd prefer to see in ftrace_dump(): > > - printk_nmi_direct_enter() / printk_nmi_direct_exit() The above appears to be the most sane. -- Steve > - printk_chatty_nmi_enter() / printk_chatty_nmi_exit() > - printk_large_nmi_enter() / printk_large_nmi_exit() > - printk_dump_nmi_enter() / printk_dump_nmi_exit()