On Thu, Mar 03, 2011 at 10:30:15AM -0700, David Ahern wrote:
> On 03/03/11 10:19, Frederic Weisbecker wrote:
> > to use perf_session__resolve_callchain() that resolves the raw struct
> > ip_callchain
> > (only made of raw ips) into a cursor (list of ips resolved into symbols and
> > so) and
> > walk through the cursor with the two accessors.
> >
> > Ah I forgot, you first need to use callchain_cursor_commit() in order to
> > initialize
> > the position in the cursor.
> >
> > So:
> >
> > 1) Resolve with perf_session__resolve_callchain()
> > 2) commit with callchain_cursor_commit()
> > 3) iterate with callchain_cursor_current(), callchain_cursor_advance()
>
> yes, I figured out the missing commit, and I changed the loop to:
> while (1) {
> node = callchain_cursor_current(cursor);
> if (!node)
> break;
>
> ... (print chain)
>
> callchain_cursor_advance(cursor);
> }
Yep.
>
> Thanks for the comments.
>
> What about the python and perl engines? Right now they are tracepoint
> specific. I do not have a sufficient background in either to expand to
> other sample types.
Not a problem, the new parameters layout paves the way to make it later feasible
if someone is interested.
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