From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753007AbdKWNrs (ORCPT ); Thu, 23 Nov 2017 08:47:48 -0500 Received: from mx2.suse.de ([195.135.220.15]:37186 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752683AbdKWNrr (ORCPT ); Thu, 23 Nov 2017 08:47:47 -0500 Date: Thu, 23 Nov 2017 14:47:43 +0100 From: Michal Hocko To: peter enderborg Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, Steven Rostedt , Ingo Molnar , Alex Deucher , "David S . Miller" , Harry Wentland , Greg Kroah-Hartman , Tony Cheng , Andrew Morton , Vlastimil Babka , Mel Gorman , Johannes Weiner , Pavel Tatashin Subject: Re: [PATCH] Add slowpath enter/exit trace events Message-ID: <20171123134743.rllnw4u4b73kfrre@dhcp22.suse.cz> References: <20171123104336.25855-1-peter.enderborg@sony.com> <20171123122530.ktsxgeakebfp3yep@dhcp22.suse.cz> <20171123124738.nj7foesbajo42t3g@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 23-11-17 14:03:04, peter enderborg wrote: > On 11/23/2017 01:47 PM, Michal Hocko wrote: > > > > This might be true but the other POV is that the trace point with the > > additional information is just too disruptive to the rest of the code > > and it exposes too many implementation details. > > From who do you want to hide details? Is this a security thing? I > don't understand this  argument.  Tracefs is not part of uapi, > right? Linus would disagree https://lwn.net/Articles/737530/ -- Michal Hocko SUSE Labs