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perf top/tui: Update nr_entries properly after a filter is applied

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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>
This commit is contained in:
Namhyung Kim 2014-04-22 14:49:31 +09:00 committed by Jiri Olsa
parent 112f761fc0
commit 268397cb2a
2 changed files with 22 additions and 4 deletions
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20
tools/perf/ui/browsers/hists.c
View File

@ -35,6 +35,11 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
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__refresh_dimensions(struct hist_browser *browser)
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 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
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 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
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 @@ 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) {
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++;

6
tools/perf/util/hist.h
View File

@ -129,6 +129,12 @@ void hists__filter_by_dso(struct hists *hists);
void hists__filter_by_thread(struct hists *hists);
void hists__filter_by_symbol(struct hists *hists);
static inline bool hists__has_filter(struct hists *hists)
{
return hists->thread_filter || hists->dso_filter ||
hists->symbol_filter_str;
}
u16 hists__col_len(struct hists *hists, enum hist_column col);
void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len);
bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len);