From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753156AbeBEPDM (ORCPT ); Mon, 5 Feb 2018 10:03:12 -0500 Received: from mail.kernel.org ([198.145.29.99]:52482 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752914AbeBEPDC (ORCPT ); Mon, 5 Feb 2018 10:03:02 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A148D217AB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=rostedt@goodmis.org Date: Mon, 5 Feb 2018 10:02:59 -0500 From: Steven Rostedt To: Namhyung Kim Cc: Alexei Starovoitov , Mathieu Desnoyers , linux-kernel , Linus Torvalds , Ingo Molnar , Andrew Morton , Thomas Gleixner , Peter Zijlstra , Masami Hiramatsu , Tom Zanussi , linux-rt-users , linux-trace-users , acme , Clark Williams , Jiri Olsa , bristot , Juri Lelli , Jonathan Corbet Subject: Re: [PATCH 00/18] [ANNOUNCE] Dynamically created function based events Message-ID: <20180205100259.311603b2@gandalf.local.home> In-Reply-To: References: <20180202230458.840252014@goodmis.org> <261141691.15507.1517677454208.JavaMail.zimbra@efficios.com> <20180203140217.2382df69@gandalf.local.home> <20180203205207.mpob4w6eyehhg2ky@ast-mbp> <20180203161732.4a65c66b@gandalf.local.home> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.31; 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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 4 Feb 2018 11:25:20 +0900 Namhyung Kim wrote: > I'm interested in this. From my understanding, it's basically > function tracing + filter + custom argument info, right? > > Supporting arguments with complex type could be error-prone. > We need to prevent malfunctions by invalid inputs. All reads are done with probe_kernel_read(). If it faults (at any stage), it simply returns "0". -- Steve