perf top/tui: Update nr_entries properly after a filter is applied
The hist_browser__reset() is only called right after a filter is
applied so it needs to udpate browser->nr_entries properly. We cannot
use hists->nr_non_filtered_entreis directly since it's possible that
such entries are also filtered out by minimum percentage limit.
In addition when a filter is used for perf top, hist browser's
nr_entries field was not updated after applying the filter. But it
needs to be updated as new samples are coming.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1398327843-31845-11-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 769295b..886eee0 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -35,6 +35,11 @@
const char *ev_name);
static void hist_browser__update_nr_entries(struct hist_browser *hb);
+static bool hist_browser__has_filter(struct hist_browser *hb)
+{
+ return hists__has_filter(hb->hists) || hb->min_pcnt;
+}
+
static void hist_browser__refresh_dimensions(struct hist_browser *browser)
{
/* 3 == +/- toggle symbol before actual hist_entry rendering */
@@ -44,7 +49,8 @@
static void hist_browser__reset(struct hist_browser *browser)
{
- browser->b.nr_entries = browser->hists->nr_entries;
+ hist_browser__update_nr_entries(browser);
+ browser->b.nr_entries = browser->nr_non_filtered_entries;
hist_browser__refresh_dimensions(browser);
ui_browser__reset_index(&browser->b);
}
@@ -319,9 +325,10 @@
int delay_secs = hbt ? hbt->refresh : 0;
browser->b.entries = &browser->hists->entries;
- browser->b.nr_entries = browser->hists->nr_entries;
- if (browser->min_pcnt)
+ if (hist_browser__has_filter(browser))
browser->b.nr_entries = browser->nr_non_filtered_entries;
+ else
+ browser->b.nr_entries = browser->hists->nr_entries;
hist_browser__refresh_dimensions(browser);
hists__browser_title(browser->hists, title, sizeof(title), ev_name);
@@ -338,7 +345,7 @@
u64 nr_entries;
hbt->timer(hbt->arg);
- if (browser->min_pcnt) {
+ if (hist_browser__has_filter(browser)) {
hist_browser__update_nr_entries(browser);
nr_entries = browser->nr_non_filtered_entries;
} else {
@@ -1347,6 +1354,11 @@
u64 nr_entries = 0;
struct rb_node *nd = rb_first(&hb->hists->entries);
+ if (hb->min_pcnt == 0) {
+ hb->nr_non_filtered_entries = hb->hists->nr_non_filtered_entries;
+ return;
+ }
+
while ((nd = hists__filter_entries(nd, hb->hists,
hb->min_pcnt)) != NULL) {
nr_entries++;