Date: Tue, 15 Jul 2008 10:39:13 -0400 (EDT)
From: Steven Rostedt <rostedt@goodmis.org>
To: Abhishek Sagar <sagar.abhishek@gmail.com>
cc: LKML <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@elte.hu>,
       Thomas Gleixner <tglx@linutronix.de>,
       Peter Zijlstra <peterz@infradead.org>,
       Clark Williams <clark.williams@gmail.com>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Randy Dunlap <randy.dunlap@oracle.com>,
       Jon Masters <jonathan@jonmasters.org>
Subject: Re: [PATCH] ftrace: Documentation
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On Sat, 12 Jul 2008, Abhishek Sagar wrote:

>
> On Thu, Jul 10, 2008 at 10:16 PM, Steven Rostedt <rostedt@goodmis.org> wrote:
> >
> > This is the long awaited ftrace.txt. It explains in quite detail how to
> > use ftrace and the various tracers.
>
> This is quite good. Thanks!
>
> > +Output format:
> > +--------------
> > +
> > +Here's an example of the output format of the file "trace"
> > +
> > +                             --------
> > +# tracer: ftrace
> > +#
> > +#           TASK-PID   CPU#    TIMESTAMP  FUNCTION
> > +#              | |      |          |         |
> > +            bash-4251  [01] 10152.583854: path_put <-path_walk
> > +            bash-4251  [01] 10152.583855: dput <-path_put
> > +            bash-4251  [01] 10152.583855: _atomic_dec_and_lock <-dput
> > +                             --------
>
> A small caveat here...the function names may be substituted with a
> "[unkown/kretprobe'd]" under special circumstances
> (http://lkml.org/lkml/2008/5/27/275). May be that should be mentioned
> here?

Hmm, I thinking that this might be too much information for this document.
If you can think of a good way to expline this without "overloading" the
reader, then please, let me know.

Thanks,

-- Steve

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