[tip:perf/core] perf hists browser: Init the has_children fields just once

tip-bot for Arnaldo Carvalho de Melo
2010-08-30T08:34:59Z

Commit-ID: 163caed90203a7cab66326ce2be138715dc7c5da
Gitweb: http://git.kernel.org/tip/163caed90203a7cab66326ce2be138715dc7c5da
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Wed, 25 Aug 2010 16:30:03 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Wed, 25 Aug 2010 16:30:03 -0300

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>
---
tools/perf/util/ui/browsers/hists.c | 18 ++++--------------
1 files changed, 4 insertions(+), 14 deletions(-)

diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index e61355e..c17611f 100644
--- 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);
}