From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965255AbbJVJX6 (ORCPT ); Thu, 22 Oct 2015 05:23:58 -0400 Received: from casper.infradead.org ([85.118.1.10]:52857 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964872AbbJVJXz (ORCPT ); Thu, 22 Oct 2015 05:23:55 -0400 Date: Thu, 22 Oct 2015 11:24:00 +0200 From: Peter Zijlstra To: "Wangnan (F)" Cc: Ingo Molnar , pi3orama , Alexei Starovoitov , xiakaixu , davem@davemloft.net, acme@kernel.org, mingo@redhat.com, masami.hiramatsu.pt@hitachi.com, jolsa@kernel.org, daniel@iogearbox.net, linux-kernel@vger.kernel.org, hekuang@huawei.com, netdev@vger.kernel.org Subject: Re: [PATCH V5 1/1] bpf: control events stored in PERF_EVENT_ARRAY maps trace data output when perf sampling Message-ID: <20151022092400.GL2508@worktop.programming.kicks-ass.net> References: <20151021121713.GC3604@twins.programming.kicks-ass.net> <56279634.5000606@huawei.com> <20151021134951.GH3604@twins.programming.kicks-ass.net> <1D2C9396-01CB-4981-B493-EA311F0457E7@163.com> <20151021140921.GI3604@twins.programming.kicks-ass.net> <586A5B33-C9C9-433D-B6E9-019264BF7DDB@163.com> <20151021165758.GK3604@twins.programming.kicks-ass.net> <56284E03.1020008@huawei.com> <20151022073959.GA18791@gmail.com> <56289589.1030008@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <56289589.1030008@huawei.com> User-Agent: Mutt/1.5.22.1 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 22, 2015 at 03:51:37PM +0800, Wangnan (F) wrote: > Because I'm not very sure what the meaning of "inconsistent" in > Peter's words... What's inconsistent is that some perf actions can be done only on local events while others can be done on !local. And I can't say I particularly like having to pass in events from userspace, but I think that Alexei convinced me that it made some sense at some point in time.