Em Tue, Dec 04, 2012 at 01:44:25PM +0900, Namhyung Kim escreveu:
> From: Namhyung Kim <namhyung....@lge.com>
>
> There's no reason to run hists_compute_resort() using output tree.
> Convert it to use internal tree so that it can remove unnecessary
> _output_resort. Also move position computation below the resort since
> it changes the output ordering.
Have you tested this with 'perf top'? With the highest frequency?
- Arnaldo
> Cc: Jiri Olsa <jo...@redhat.com>
> Cc: Stephane Eranian <eran...@google.com>
> Signed-off-by: Namhyung Kim <namhy...@kernel.org>
> ---
> tools/perf/builtin-diff.c | 32 +++++++++++++++++++-------------
> 1 file changed, 19 insertions(+), 13 deletions(-)
>
> diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
> index b52f5d8c4a6b..4e18cea7c845 100644
> --- a/tools/perf/builtin-diff.c
> +++ b/tools/perf/builtin-diff.c
> @@ -435,19 +435,25 @@ static void insert_hist_entry_by_compute(struct rb_root
> *root,
>
> static void hists__compute_resort(struct hists *hists)
> {
> - struct rb_root tmp = RB_ROOT;
> - 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;
> +
> + hists->entries = RB_ROOT;
> + next = rb_first(root);
>
> while (next != NULL) {
> - struct hist_entry *he = rb_entry(next, struct hist_entry,
> rb_node);
> + struct hist_entry *he;
>
> - next = rb_next(&he->rb_node);
> + he = rb_entry(next, struct hist_entry, rb_node_in);
> + next = rb_next(&he->rb_node_in);
>
> - rb_erase(&he->rb_node, &hists->entries);
> - insert_hist_entry_by_compute(&tmp, he, compute);
> + insert_hist_entry_by_compute(&hists->entries, he, compute);
> }
> -
> - hists->entries = tmp;
> }
>
> static void hists__process(struct hists *old, struct hists *new)
> @@ -459,16 +465,16 @@ 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);
> -
> if (sort_compute) {
> hists__precompute(new);
> hists__compute_resort(new);
> + } else {
> + hists__output_resort(new);
> }
>
> + if (show_displacement)
> + hists__compute_position(new);
> +
> hists__fprintf(new, true, 0, 0, stdout);
> }
>
> --
> 1.7.11.7
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