linux-kernel - Re: [PATCH v6 01/12] tools lib traceevent: Convert remaining %p[fF] users to %p[sS]

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Message-ID: <20190918130837.GQ5781@paasikivi.fi.intel.com>
Date:   Wed, 18 Sep 2019 16:08:37 +0300
From:   Sakari Ailus <sakari.ailus@...ux.intel.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Joe Perches <joe@...ches.com>, Petr Mladek <pmladek@...e.com>,
        linux-kernel@...r.kernel.org, rafael@...nel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-acpi@...r.kernel.org, devicetree@...r.kernel.org,
        Rob Herring <robh@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Tzvetomir Stoyanov <tstoyanov@...are.com>,
        linux-trace-devel@...r.kernel.org, Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: Re: [PATCH v6 01/12] tools lib traceevent: Convert remaining %p[fF]
 users to %p[sS]

Hi Steven,

On Mon, Sep 16, 2019 at 10:37:55AM -0400, Steven Rostedt wrote:
> > If you think that's an issue, I'll opt for another extension than %pfw,
> > which I chose originally since it's memorable --- fw for fwnode (names,
> > paths, and probably more in the future).
> > 
> 
> I'm fine with the switch, as long as newer tools know how to handle it.
> 
> Make sure we also add a comment in the Linux kernel code that states
> that older kernels use to have 'f' and 'F' and that new tools look for
> 'fw' to denote that this isn't an older kernel. This way, people will
> hopefully not add another 'fX' pointer name.

Good point. I'll add a comment on this to make_bprint_args() in
tools/lib/traceevent/event-parse.c as well as in vsprintf.c.

-- 
Regards,

Sakari Ailus
sakari.ailus@...ux.intel.com