[PATCH v6 10/25] perf hists: Resort hist entries with hierarchy

Namhyung Kim
2016-02-16T14:17:43Z

For hierarchical output, each entries should be sorted in their
rbtree (hroot) properly. Add hists__hierarchy_output_resort() to do the
job. Note that those hierarchy entries share the period counts, it'd be
important to update the hists->stats only once (for leaves).

Acked-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/util/hist.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 89 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6b45fe021485..9b9c7b51e311 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -1298,6 +1298,84 @@ void hists__inc_stats(struct hists *hists, struct hist_entry *h)
hists->stats.total_period += h->stat.period;
}

+static void hierarchy_insert_output_entry(struct rb_root *root,
+ struct hist_entry *he)
+{
+ struct rb_node **p = &root->rb_node;
+ struct rb_node *parent = NULL;
+ struct hist_entry *iter;
+
+ while (*p != NULL) {
+ parent = *p;
+ iter = rb_entry(parent, struct hist_entry, rb_node);
+
+ if (hist_entry__sort(he, iter) > 0)
+ p = &parent->rb_left;
+ else
+ p = &parent->rb_right;
+ }
+
+ rb_link_node(&he->rb_node, parent, p);
+ rb_insert_color(&he->rb_node, root);
+}
+
+static void hists__hierarchy_output_resort(struct hists *hists,
+ struct ui_progress *prog,
+ struct rb_root *root_in,
+ struct rb_root *root_out,
+ u64 min_callchain_hits,
+ bool use_callchain)
+{
+ struct rb_node *node;
+ struct hist_entry *he;
+
+ *root_out = RB_ROOT;
+ node = rb_first(root_in);
+
+ while (node) {
+ he = rb_entry(node, struct hist_entry, rb_node_in);
+ node = rb_next(node);
+
+ hierarchy_insert_output_entry(root_out, he);
+
+ if (prog)
+ ui_progress__update(prog, 1);
+
+ if (!he->leaf) {
+ hists__hierarchy_output_resort(hists, prog,
+ &he->hroot_in,
+ &he->hroot_out,
+ min_callchain_hits,
+ use_callchain);
+ hists->nr_entries++;
+ if (!he->filtered)
+ hists->nr_non_filtered_entries++;
+
+ continue;
+ }
+
+ /* only update stat for leaf entries to avoid duplication */
+ hists__inc_stats(hists, he);
+ if (!he->filtered)
+ hists__calc_col_len(hists, he);
+
+ if (!use_callchain)
+ continue;
+
+ if (callchain_param.mode == CHAIN_GRAPH_REL) {
+ u64 total = he->stat.period;
+
+ if (symbol_conf.cumulate_callchain)
+ total = he->stat_acc->period;
+
+ min_callchain_hits = total * (callchain_param.min_percent / 100);
+ }
+
+ callchain_param.sort(&he->sorted_chain, he->callchain,
+ min_callchain_hits, &callchain_param);
+ }
+}
+
static void __hists__insert_output_entry(struct rb_root *entries,
struct hist_entry *he,
u64 min_callchain_hits,
@@ -1349,6 +1427,17 @@ static void output_resort(struct hists *hists, struct ui_progress *prog,

min_callchain_hits = callchain_total * (callchain_param.min_percent / 100);

+ hists__reset_stats(hists);
+ hists__reset_col_len(hists);
+
+ if (symbol_conf.report_hierarchy) {
+ return hists__hierarchy_output_resort(hists, prog,
+ &hists->entries_collapsed,
+ &hists->entries,
+ min_callchain_hits,
+ use_callchain);
+ }
+
if (sort__need_collapse)
root = &hists->entries_collapsed;
else
@@ -1357,9 +1446,6 @@ static void output_resort(struct hists *hists, struct ui_progress *prog,
next = rb_first(root);
hists->entries = RB_ROOT;

- hists__reset_stats(hists);
- hists__reset_col_len(hists);
-
while (next) {
n = rb_entry(next, struct hist_entry, rb_node_in);
next = rb_next(&n->rb_node_in);
--
2.7.1