From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753603AbbEALtv (ORCPT ); Fri, 1 May 2015 07:49:51 -0400 Received: from mail-wi0-f180.google.com ([209.85.212.180]:35887 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751643AbbEALtu (ORCPT ); Fri, 1 May 2015 07:49:50 -0400 Date: Fri, 1 May 2015 13:49:43 +0200 From: Ingo Molnar To: Peter Zijlstra Cc: Alexei Starovoitov , Wang Nan , davem@davemloft.net, acme@kernel.org, mingo@redhat.com, masami.hiramatsu.pt@hitachi.com, jolsa@kernel.org, lizefan@kernel.org, linux-kernel@vger.kernel.org, pi3orama@163.com, hekuang@huawei.com, bgregg@netflix.com Subject: Re: [RFC PATCH 00/22] perf tools: introduce 'perf bpf' command to load eBPF programs. Message-ID: <20150501114943.GA24094@gmail.com> References: <1430391165-30267-1-git-send-email-wangnan0@huawei.com> <554302F0.3070101@plumgrid.com> <20150501110659.GE5029@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150501110659.GE5029@twins.programming.kicks-ass.net> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Peter Zijlstra wrote: > On Thu, Apr 30, 2015 at 09:37:04PM -0700, Alexei Starovoitov wrote: > > We're also working in parallel on creating a new tracing language > > that together with llvm backend can be used as a single shared library > > that can be called from perf or anything else. > > Gurgh, please also keep normal C an option. [...] Absolutely, I thought there was agreement on that when we started merging all these eBPF patches ... It might be 'simplified C', in that it's just a subset of C, but please don't re-do something that works, especially if it's used to instrument a kernel that is written in C ... Thanks, Ingo