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perf hists browser: Count number of hierarchy entries

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Add nr_hierarchy_entries field to keep current number of (unfolded) hist
entries.  And the hist_entry->nr_rows carries number of direct children.
But in the hierarchy mode, entry can have grand children and callchains.
So update the number properly using hierarchy_count_rows() when toggling
the folded state (by pressing ENTER key).

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-12-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2016-02-25 00:13:43 +09:00 committed by Arnaldo Carvalho de Melo
parent 8e2fc44f46
commit f5b763feeb
1 changed files with 74 additions and 11 deletions
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85
tools/perf/ui/browsers/hists.c
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@ -32,6 +32,7 @@ struct hist_browser {
bool show_headers;
float min_pcnt;
u64 nr_non_filtered_entries;
u64 nr_hierarchy_entries;
u64 nr_callchain_rows;
};
@ -58,11 +59,11 @@ static int hist_browser__get_folding(struct hist_browser *browser)
for (nd = rb_first(&hists->entries);
(nd = hists__filter_entries(nd, browser->min_pcnt)) != NULL;
nd = rb_next(nd)) {
nd = rb_hierarchy_next(nd)) {
struct hist_entry *he =
rb_entry(nd, struct hist_entry, rb_node);
if (he->unfolded)
if (he->leaf && he->unfolded)
unfolded_rows += he->nr_rows;
}
return unfolded_rows;
@ -72,7 +73,9 @@ static u32 hist_browser__nr_entries(struct hist_browser *hb)
{
u32 nr_entries;
if (hist_browser__has_filter(hb))
if (symbol_conf.report_hierarchy)
nr_entries = hb->nr_hierarchy_entries;
else if (hist_browser__has_filter(hb))
nr_entries = hb->nr_non_filtered_entries;
else
nr_entries = hb->hists->nr_entries;
@ -247,6 +250,35 @@ static int callchain__count_rows(struct rb_root *chain)
return n;
}
static int hierarchy_count_rows(struct hist_browser *hb, struct hist_entry *he,
bool include_children)
{
int count = 0;
struct rb_node *node;
struct hist_entry *child;
if (he->leaf)
return callchain__count_rows(&he->sorted_chain);
node = rb_first(&he->hroot_out);
while (node) {
float percent;
child = rb_entry(node, struct hist_entry, rb_node);
percent = hist_entry__get_percent_limit(child);
if (!child->filtered && percent >= hb->min_pcnt) {
count++;
if (include_children && child->unfolded)
count += hierarchy_count_rows(hb, child, true);
}
node = rb_next(node);
}
return count;
}
static bool hist_entry__toggle_fold(struct hist_entry *he)
{
if (!he)
@ -326,11 +358,17 @@ static void callchain__init_have_children(struct rb_root *root)
static void hist_entry__init_have_children(struct hist_entry *he)
{
if (!he->init_have_children) {
if (he->init_have_children)
return;
if (he->leaf) {
he->has_children = !RB_EMPTY_ROOT(&he->sorted_chain);
callchain__init_have_children(&he->sorted_chain);
he->init_have_children = true;
} else {
he->has_children = !RB_EMPTY_ROOT(&he->hroot_out);
}
he->init_have_children = true;
}
static bool hist_browser__toggle_fold(struct hist_browser *browser)
@ -349,17 +387,41 @@ static bool hist_browser__toggle_fold(struct hist_browser *browser)
has_children = callchain_list__toggle_fold(cl);
if (has_children) {
int child_rows = 0;
hist_entry__init_have_children(he);
browser->b.nr_entries -= he->nr_rows;
browser->nr_callchain_rows -= he->nr_rows;
if (he->unfolded)
he->nr_rows = callchain__count_rows(&he->sorted_chain);
if (he->leaf)
browser->nr_callchain_rows -= he->nr_rows;
else
browser->nr_hierarchy_entries -= he->nr_rows;
if (symbol_conf.report_hierarchy)
child_rows = hierarchy_count_rows(browser, he, true);
if (he->unfolded) {
if (he->leaf)
he->nr_rows = callchain__count_rows(&he->sorted_chain);
else
he->nr_rows = hierarchy_count_rows(browser, he, false);
/* account grand children */
if (symbol_conf.report_hierarchy)
browser->b.nr_entries += child_rows - he->nr_rows;
} else {
if (symbol_conf.report_hierarchy)
browser->b.nr_entries -= child_rows - he->nr_rows;
he->nr_rows = 0;
}
browser->b.nr_entries += he->nr_rows;
browser->nr_callchain_rows += he->nr_rows;
if (he->leaf)
browser->nr_callchain_rows += he->nr_rows;
else
browser->nr_hierarchy_entries += he->nr_rows;
return true;
}
@ -2025,17 +2087,18 @@ static void hist_browser__update_nr_entries(struct hist_browser *hb)
u64 nr_entries = 0;
struct rb_node *nd = rb_first(&hb->hists->entries);
if (hb->min_pcnt == 0) {
if (hb->min_pcnt == 0 && !symbol_conf.report_hierarchy) {
hb->nr_non_filtered_entries = hb->hists->nr_non_filtered_entries;
return;
}
while ((nd = hists__filter_entries(nd, hb->min_pcnt)) != NULL) {
nr_entries++;
nd = rb_next(nd);
nd = rb_hierarchy_next(nd);
}
hb->nr_non_filtered_entries = nr_entries;
hb->nr_hierarchy_entries = nr_entries;
}
static void hist_browser__update_percent_limit(struct hist_browser *hb,