From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 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> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: stable-owner@vger.kernel.org List-ID: 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()