From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752383AbdKWJtj (ORCPT ); Thu, 23 Nov 2017 04:49:39 -0500 Received: from merlin.infradead.org ([205.233.59.134]:48814 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751906AbdKWJth (ORCPT ); Thu, 23 Nov 2017 04:49:37 -0500 Date: Thu, 23 Nov 2017 10:49:16 +0100 From: Peter Zijlstra To: Christoph Hellwig Cc: Alexei Starovoitov , Song Liu , rostedt@goodmis.org, mingo@redhat.com, davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, daniel@iogearbox.net, kernel-team@fb.com Subject: Re: [PATCH 0/6] enable creating [k,u]probe with perf_event_open Message-ID: <20171123094916.go3ggkp5bqaog475@hirez.programming.kicks-ass.net> References: <20171115172339.1791161-1-songliubraving@fb.com> <20171122050045.cjt4legewplt3yet@ast-mbp> <20171123090200.GB10669@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171123090200.GB10669@infradead.org> 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, Nov 23, 2017 at 01:02:00AM -0800, Christoph Hellwig wrote: > Just curious: why do you want to overload a multiplexer syscall even > more instead of adding explicit syscalls? Mostly because perf provides much of what they already want; fd-based lifetime and bpf integration.