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SubjectRe: [PATCH 2/3] perf hists: Link hist entries before inserting to an output tree
On Wed, Dec 05, 2012 at 08:06:46PM +0100, Jiri Olsa wrote:
> On Wed, Dec 05, 2012 at 03:56:42PM +0900, Namhyung Kim wrote:
> > From: Namhyung Kim <namhyung.kim@lge.com>
> >
>
> SNIP
>
> > - struct rb_node *next = rb_first(&hists->entries);
> > + struct rb_root *root;
> > + struct rb_node *next;
> > +
> > + if (sort__need_collapse)
> > + root = &hists->entries_collapsed;
> > + else
> > + root = hists->entries_in;
> >
> > + next = rb_first(root);
> > while (next != NULL) {
> > - struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node);
> > + struct hist_entry *he = rb_entry(next, struct hist_entry, rb_node_in);
> >
> > - next = rb_next(&he->rb_node);
> > + next = rb_next(&he->rb_node_in);
> > if (!hist_entry__next_pair(he)) {
> > - rb_erase(&he->rb_node, &hists->entries);
> > + rb_erase(&he->rb_node_in, root);
> > hist_entry__free(he);
> > }
> > }
> > @@ -481,6 +459,11 @@ static void hists__process(struct hists *old, struct hists *new)
> > else
> > hists__link(new, old);
> >
> > + hists__output_resort(new);
> > +
> > + if (show_displacement)
> > + hists__compute_position(new);
> > +
>
> Computing the position after hists__link screws up the position data,
> because we likely have new entries in.
>
> However, I wonder if anyone is actualy using displacement info..?

hum,

the point of the displacement is to show how far is the matching entry
in baseline wrt report output -> after hists__output_resort.. that goes
in opposite way of what we try do to in here.

Anyone else in favour of removing 'Displ.' column? ;-)

jirka


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