linux-kernel - Re: [PATCH 4/7] sched: Add sched_load

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Message-ID: <20190506104618.2fa49e13@gandalf.local.home>
Date:   Mon, 6 May 2019 10:46:18 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Qais Yousef <qais.yousef@....com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        Pavankumar Kondeti <pkondeti@...eaurora.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Uwe Kleine-Konig <u.kleine-koenig@...gutronix.de>
Subject: Re: [PATCH 4/7] sched: Add sched_load_rq tracepoint

On Mon, 6 May 2019 15:42:00 +0100
Qais Yousef <qais.yousef@....com> wrote:

> I can control that for the wrappers I'm introducing. But the actual tracepoint
> get the 'trace_' part prepended automatically by the macros.
> 
> ie DECLARE_TRACE(pelt_rq, ...) will automatically generate a function called
> trace_pelt_se(...)
> 
> Or am I missing something?

No trace comes from the trace points.

So basically, we are going back to having tracepoints without
associated trace events. Which basically is just saying "we want trace
events here, but don't want an API". Of course, we can create a module
that can attach to them and create the trace events as well.

I'm not a big fan of this, but I'll let Peter decide.

-- Steve