From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755905Ab3KVPB5 (ORCPT ); Fri, 22 Nov 2013 10:01:57 -0500 Received: from mail-pd0-f175.google.com ([209.85.192.175]:46162 "EHLO mail-pd0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755607Ab3KVPBz (ORCPT ); Fri, 22 Nov 2013 10:01:55 -0500 Message-ID: <528F71DB.30603@gmail.com> Date: Fri, 22 Nov 2013 08:01:47 -0700 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.1.1 MIME-Version: 1.0 To: Jiri Olsa , linux-kernel@vger.kernel.org CC: Ingo Molnar , Frederic Weisbecker , Peter Zijlstra , Namhyung Kim , Mike Galbraith , Stephane Eranian , Adrian Hunter Subject: Re: [PATCH 0/3] perf tools: Add data file write interface References: <1385130268-10664-1-git-send-email-jolsa@redhat.com> In-Reply-To: <1385130268-10664-1-git-send-email-jolsa@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/22/13, 7:24 AM, Jiri Olsa wrote: > David, > patch 2 could colide with your mmap changes, not sure > what's your plan with that in near future, let me know > and I can rebase if needed. The day job requires some focus for a few days. I was hoping to revisit the mmap output end of next week during the holidays here. Make mmap optional -- default to write with an option for mmap. Add some builtin detection to do the right thing if the user did not specify a preference -- system wide tracing should flip to mmap, system wide faults should write. Log a warning to the user if the requested option goes against that. If Peter or Ingo have other thoughts or ideas to the contrary I'd love to hear them before the next iteration. David