From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S968330AbdD1CNy (ORCPT <rfc822;w@1wt.eu>);
        Thu, 27 Apr 2017 22:13:54 -0400
Received: from mail-pg0-f52.google.com ([74.125.83.52]:35720 "EHLO
        mail-pg0-f52.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S937823AbdD1CNr (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Thu, 27 Apr 2017 22:13:47 -0400
Subject: Re: perf report warnings on tracepoint events hidden by ui
To: Steven Rostedt <rostedt@goodmis.org>,
        David Carrillo-Cisneros <davidcc@google.com>
References: <CALcN6miCRD329i_4UNjhVHOpnxgG6j8L_giLtFc5nmSGn_JQhw@mail.gmail.com>
 <20170427214147.2d56b202@gandalf.local.home>
Cc: Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
        Arnaldo Carvalho de Melo <acme@redhat.com>,
        Andi Kleen <andi@firstfloor.org>,
        Frederic Weisbecker <fweisbec@gmail.com>,
        Peter Zijlstra <peterz@infradead.org>, Wang Nan <wangnan0@huawei.com>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        Stephane Eranian <eranian@google.com>
From: David Ahern <dsahern@gmail.com>
Message-ID: <a0b768ec-6f46-0ca9-7525-a19ee9ba04ad@gmail.com>
Date: Thu, 27 Apr 2017 20:13:43 -0600
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:45.0)
 Gecko/20100101 Thunderbird/45.8.0
MIME-Version: 1.0
In-Reply-To: <20170427214147.2d56b202@gandalf.local.home>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 4/27/17 7:41 PM, Steven Rostedt wrote:
> On Thu, 27 Apr 2017 19:31:12 -0500
> David Carrillo-Cisneros <davidcc@google.com> wrote:
> 
>> When processing tracepoint events, perf report outputs warnings about
>> field not founds. The warnings are usually hidden by perf report UI
>> and appear when using the --stdio option. e.g.
>>
>>   $ perf record -e syscalls:sys_enter_mmap some_load

'-e syscalls' vs raw_syscalls suggests an older kernel -- like RHEL6.


See the note I put into tools/perf/builtin-trace.c:

static struct perf_evsel *perf_evsel__syscall_newtp(const char
*direction, void *handler)
{
        struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls",
direction);

        /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */
        if (IS_ERR(evsel))
                evsel = perf_evsel__newtp("syscalls", direction);


Are you running top of tree perf on RHEL6?