linux-kernel - Re: [PATCH v3 03/33] ring-buffer: Add interface for setting absolute time stamps

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Message-ID: <1507203273.29707.0.camel@tzanussi-mobl.amr.corp.intel.com>
Date:   Thu, 05 Oct 2017 06:34:33 -0500
From:   Tom Zanussi <tom.zanussi@...ux.intel.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     tglx@...utronix.de, mhiramat@...nel.org, namhyung@...nel.org,
        vedang.patel@...el.com, bigeasy@...utronix.de,
        joel.opensrc@...il.com, joelaf@...gle.com,
        mathieu.desnoyers@...icios.com, baohong.liu@...el.com,
        rajvi.jingar@...el.com, linux-kernel@...r.kernel.org,
        linux-rt-users@...r.kernel.org
Subject: Re: [PATCH v3 03/33] ring-buffer: Add interface for setting
 absolute time stamps

Hi Steve,

On Wed, 2017-10-04 at 13:14 -0400, Steven Rostedt wrote:
> On Fri, 22 Sep 2017 14:59:43 -0500
> Tom Zanussi <tom.zanussi@...ux.intel.com> wrote:
> 
> > +	/*
> > +	 * New timestamps may not be consistent with the previous setting.
> > +	 * Reset the buffer so that it doesn't have incomparable timestamps.
> 
> I would like to make the ring buffer robust enough to handle both. Can
> this be done?
> 

Probably - I'll take a look at doing this for V4...

Tom

> -- Steve
> 
> > +	 */
> > +	tracing_reset_online_cpus(&tr->trace_buffer);
> > +