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    SubjectRe: [PATCH] ftrace: Documentation


    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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