From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <dev-bounces@dpdk.org>
Received: from dpdk.org (dpdk.org [92.243.14.124])
	by inbox.dpdk.org (Postfix) with ESMTP id DA89CA0597;
	Thu,  9 Apr 2020 20:52:55 +0200 (CEST)
Received: from [92.243.14.124] (localhost [127.0.0.1])
	by dpdk.org (Postfix) with ESMTP id 060A21D157;
	Thu,  9 Apr 2020 20:52:55 +0200 (CEST)
Received: from mail-io1-f65.google.com (mail-io1-f65.google.com
 [209.85.166.65]) by dpdk.org (Postfix) with ESMTP id 881D51C2BF
 for <dev@dpdk.org>; Thu,  9 Apr 2020 20:52:53 +0200 (CEST)
Received: by mail-io1-f65.google.com with SMTP id n20so647327ioa.4
 for <dev@dpdk.org>; Thu, 09 Apr 2020 11:52:53 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
 h=mime-version:references:in-reply-to:from:date:message-id:subject:to
 :cc; bh=Jaei9a4OU3ry52cnhdZIL0meU0ONbycivpeBD//0EqE=;
 b=ZfoOcg0n9PWfluYIbLrn/HxbuNmJWROUN5e5LiighCVK+IT1fFS2m1tbpE3PkfyilA
 lIITBBJN1uLLJUtGl5dfxisvJGSoIytqFHokbfjllz6LE/eDhgx1qSuYqguY53dE4oLh
 /wCRLljehZhWFdvDW0pKg8PrP6tcotuMcberPLTsEqIXMTJ6ldi/+DHE4pAkkjjIOHVg
 PTTnOv+E+nzhxZnzJ6PFmuGJIR91sj0egZy40d0rFLnhkz+KfiOEAyXb+t3ofgaLXQiU
 IuN0hejBWSi6U9Z4tbM8gKsvb6j+2XlGLRfmURnmY2TiEbGg54EVcdhSL1LnXsD9i5KL
 RMNw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:references:in-reply-to:from:date
 :message-id:subject:to:cc;
 bh=Jaei9a4OU3ry52cnhdZIL0meU0ONbycivpeBD//0EqE=;
 b=CKeqRugEe4sw8Ou25iZ9UMn32k5uELTTeToZC5LeCBR2FYfu5CPMlDZlIlxS+myBWC
 W3iMlTO67w7G5qHOPGDk56U3WAXJZxFU0VpKIv3kppcVGPdWi17G2hYRHHZwJdstPtUO
 q2iBCzGsrb7iuivLXznuw/M9LorLM5fmbpKWnEtavDXlgzcdgn2gUwNLWTRZ04u9odVe
 ercmvhWo8gtODY0qqUzPXdSqjxGfPeIMnQagylLZNvAlA5tHvbaUMccQcxRip9TEcQfP
 bPsKgt6aoDvwvNN1hDtrbTtAgnFYNjrK+5OdS8piSA53YX7bC1P0PoKkpZFbuIt/HbMH
 uc6w==
X-Gm-Message-State: AGi0PuaR2k+Ynj7mS31ws2ewqF3ghjlKoEzxyZ9t+gjPxH2kx1NFm8e0
 G0QVROtW/AgWZkoZH9HlAHcnLiXRfquMUqyfX5Q=
X-Google-Smtp-Source: APiQypJPnXP9vRntVYuij31otMIWapf4tBAmTN6lN/YlQlCXYr+R7TxHqhzOyYGdrujCf2lQGgHll6kTltmeija6Vig=
X-Received: by 2002:a02:9a0d:: with SMTP id b13mr919662jal.60.1586458372807;
 Thu, 09 Apr 2020 11:52:52 -0700 (PDT)
MIME-Version: 1.0
References: <20200329144342.1543749-1-jerinj@marvell.com>
 <6115809.K2JlShyGXD@thomas>
 <CALBAE1M43byd061xSiKUvtq8MxwSu41P1DTd+jHsNnWLAmo8Qg@mail.gmail.com>
 <14100064.JCcGWNJJiE@thomas>
 <CALBAE1MbxxdDv57zH3Sb3LF7z_E+3VUo_p99VogBKsvi05FMEA@mail.gmail.com>
In-Reply-To: <CALBAE1MbxxdDv57zH3Sb3LF7z_E+3VUo_p99VogBKsvi05FMEA@mail.gmail.com>
From: Jerin Jacob <jerinjacobk@gmail.com>
Date: Fri, 10 Apr 2020 00:22:35 +0530
Message-ID: <CALBAE1ODSrZZTYhxwcuD4PTB+nqhbbeRUafywqg=pSDQUbEbRg@mail.gmail.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: Jerin Jacob <jerinj@marvell.com>, dpdk-dev <dev@dpdk.org>, 
 "Richardson, Bruce" <bruce.richardson@intel.com>,
 David Marchand <david.marchand@redhat.com>, 
 =?UTF-8?Q?Mattias_R=C3=B6nnblom?= <mattias.ronnblom@ericsson.com>, 
 Sunil Kumar Kori <skori@marvell.com>, Olivier Matz <olivier.matz@6wind.com>
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [dpdk-dev] [PATCH v4 00/33] DPDK Trace support
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: DPDK patches and discussions <dev.dpdk.org>
List-Unsubscribe: <https://mails.dpdk.org/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://mails.dpdk.org/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <https://mails.dpdk.org/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

On Thu, Apr 9, 2020 at 11:57 PM Jerin Jacob <jerinjacobk@gmail.com> wrote:
>
> > > >
> > > > They are setting levels with regex or globbing.
> > > > --log-level supports 3 syntaxes today:
> > > >         - int (global level)
> > > >         - globbing:int
> > > >         - regex,int
> > >
> > > Here is my understanding.
> > >
> > > IMO, Actual Syntax is
> > >          - int (global level)
> > >          - globbing: int (global level)
> > >          - regex: int (global level)
> >
> > The level apply to the logs matching the pattern (globbing or regex)
> > so I don't understand why you call it "global".
>
> What I meant is, if there is no global, what is the point of changing
> the trace level with EAL command-line argument with globbing and regex.

Self reply on this:

I understood where is the disconnect is:

In case of log:
~~~~~~~~~~~
It will be printed when:
a) When it is less than both the "global" and "log level"

NOTE: in case of log, log level passed on to log function (see
rte_log(uint32_t level..)

In case of trace:
~~~~~~~~~~~~
it will be emitted when:
a) The trace is enabled (rte_trace_enable() called on the tracepoint)
b) When it is less than the global level.

NOTE: in case of trace, Nothing like log level passed to trace emit
function. The control lies with a slow path enable/disable
decision(item (a)) due to performance requirements
to instrumentation overhead.