Messages in this thread | | | Date | Tue, 4 Dec 2012 10:45:44 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 3/3] perf diff: Use internal rb tree for compute resort |
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Em Tue, Dec 04, 2012 at 01:44:25PM +0900, Namhyung Kim escreveu: > From: Namhyung Kim <namhyung.kim@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 <jolsa@redhat.com> > Cc: Stephane Eranian <eranian@google.com> > Signed-off-by: Namhyung Kim <namhyung@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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