perf hists browser: Init the has_children fields just once

Not everytime we show the callchains, removing duplicated initialization
of this field.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index e61355e6b2c56e059f0c5b2409e1d89873dc98b5..c17611fb5c0bae980f8883eccba286bf2a17c8da 100644 (file)
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -298,15 +298,10 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *self,
                        int color;
                        bool was_first = first;
 
-                       if (first) {
+                       if (first)
                                first = false;
-                               chain->ms.has_children = chain->list.next != &child->val ||
-                                                        !RB_EMPTY_ROOT(&child->rb_root);
-                       } else {
+                       else
                                extra_offset = LEVEL_OFFSET_STEP;
-                               chain->ms.has_children = chain->list.next == &child->val &&
-                                                        !RB_EMPTY_ROOT(&child->rb_root);
-                       }
 
                        folded_sign = callchain_list__folded(chain);
                        if (*row_offset != 0) {
@@ -376,12 +371,7 @@ static int hist_browser__show_callchain_node(struct hist_browser *self,
        list_for_each_entry(chain, &node->val, list) {
                char ipstr[BITS_PER_LONG / 4 + 1], *s;
                int color;
-               /*
-                * FIXME: This should be moved to somewhere else,
-                * probably when the callchain is created, so as not to
-                * traverse it all over again
-                */
-               chain->ms.has_children = !RB_EMPTY_ROOT(&node->rb_root);
+
                folded_sign = callchain_list__folded(chain);
 
                if (*row_offset != 0) {
@@ -457,7 +447,7 @@ static int hist_browser__show_entry(struct hist_browser *self,
        }
 
        if (symbol_conf.use_callchain) {
-               entry->ms.has_children = !RB_EMPTY_ROOT(&entry->sorted_chain);
+               hist_entry__init_have_children(entry);
                folded_sign = hist_entry__folded(entry);
        }