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perf report: Add --percent-limit option

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The --percent-limit option is for not showing small overhead entries in
the output.  Maybe we want to set a certain default value like 0.1.

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: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1368497347-9628-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim
2013-05-14 11:09:04 +09:00
committed by Arnaldo Carvalho de Melo
parent f3dd19817e
commit 064f19815c
8 changed files with 115 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

79
tools/perf/ui/browsers/hists.c
View File

@@ -25,6 +25,8 @@ struct hist_browser {
struct map_symbol *selection;
int print_seq;
bool show_dso;
float min_pcnt;
u64 nr_pcnt_entries;
};
extern void hist_browser__init_hpp(void);
@@ -317,6 +319,8 @@ static int hist_browser__run(struct hist_browser *browser, const char *ev_name,
browser->b.entries = &browser->hists->entries;
browser->b.nr_entries = browser->hists->nr_entries;
if (browser->min_pcnt)
browser->b.nr_entries = browser->nr_pcnt_entries;
hist_browser__refresh_dimensions(browser);
hists__browser_title(browser->hists, title, sizeof(title), ev_name);
@@ -795,10 +799,15 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
for (nd = browser->top; nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
float percent = h->stat.period * 100.0 /
hb->hists->stats.total_period;
if (h->filtered)
continue;
if (percent < hb->min_pcnt)
continue;
row += hist_browser__show_entry(hb, h, row);
if (row == browser->height)
break;
@@ -807,10 +816,18 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
return row;
}
static struct rb_node *hists__filter_entries(struct rb_node *nd)
static struct rb_node *hists__filter_entries(struct rb_node *nd,
struct hists *hists,
float min_pcnt)
{
while (nd != NULL) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
float percent = h->stat.period * 100.0 /
hists->stats.total_period;
if (percent < min_pcnt)
return NULL;
if (!h->filtered)
return nd;
@@ -820,11 +837,16 @@ static struct rb_node *hists__filter_entries(struct rb_node *nd)
return NULL;
}
static struct rb_node *hists__filter_prev_entries(struct rb_node *nd)
static struct rb_node *hists__filter_prev_entries(struct rb_node *nd,
struct hists *hists,
float min_pcnt)
{
while (nd != NULL) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
if (!h->filtered)
float percent = h->stat.period * 100.0 /
hists->stats.total_period;
if (!h->filtered && percent >= min_pcnt)
return nd;
nd = rb_prev(nd);
@@ -839,6 +861,9 @@ static void ui_browser__hists_seek(struct ui_browser *browser,
struct hist_entry *h;
struct rb_node *nd;
bool first = true;
struct hist_browser *hb;
hb = container_of(browser, struct hist_browser, b);
if (browser->nr_entries == 0)
return;
@@ -847,13 +872,15 @@ static void ui_browser__hists_seek(struct ui_browser *browser,
switch (whence) {
case SEEK_SET:
nd = hists__filter_entries(rb_first(browser->entries));
nd = hists__filter_entries(rb_first(browser->entries),
hb->hists, hb->min_pcnt);
break;
case SEEK_CUR:
nd = browser->top;
goto do_offset;
case SEEK_END:
nd = hists__filter_prev_entries(rb_last(browser->entries));
nd = hists__filter_prev_entries(rb_last(browser->entries),
hb->hists, hb->min_pcnt);
first = false;
break;
default:
@@ -896,7 +923,8 @@ do_offset:
break;
}
}
nd = hists__filter_entries(rb_next(nd));
nd = hists__filter_entries(rb_next(nd), hb->hists,
hb->min_pcnt);
if (nd == NULL)
break;
--offset;
@@ -929,7 +957,8 @@ do_offset:
}
}
nd = hists__filter_prev_entries(rb_prev(nd));
nd = hists__filter_prev_entries(rb_prev(nd), hb->hists,
hb->min_pcnt);
if (nd == NULL)
break;
++offset;
@@ -1098,14 +1127,17 @@ static int hist_browser__fprintf_entry(struct hist_browser *browser,
static int hist_browser__fprintf(struct hist_browser *browser, FILE *fp)
{
struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries));
struct rb_node *nd = hists__filter_entries(rb_first(browser->b.entries),
browser->hists,
browser->min_pcnt);
int printed = 0;
while (nd) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
printed += hist_browser__fprintf_entry(browser, h, fp);
nd = hists__filter_entries(rb_next(nd));
nd = hists__filter_entries(rb_next(nd), browser->hists,
browser->min_pcnt);
}
return printed;
@@ -1324,11 +1356,25 @@ close_file_and_continue:
return ret;
}
static void hist_browser__update_pcnt_entries(struct hist_browser *hb)
{
u64 nr_entries = 0;
struct rb_node *nd = rb_first(&hb->hists->entries);
while (nd) {
nr_entries++;
nd = hists__filter_entries(rb_next(nd), hb->hists,
hb->min_pcnt);
}
hb->nr_pcnt_entries = nr_entries;
}
static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
const char *helpline, const char *ev_name,
bool left_exits,
struct hist_browser_timer *hbt,
float min_pcnt,
struct perf_session_env *env)
{
struct hists *hists = &evsel->hists;
@@ -1345,6 +1391,11 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
if (browser == NULL)
return -1;
if (min_pcnt) {
browser->min_pcnt = min_pcnt;
hist_browser__update_pcnt_entries(browser);
}
fstack = pstack__new(2);
if (fstack == NULL)
goto out;
@@ -1684,6 +1735,7 @@ struct perf_evsel_menu {
struct ui_browser b;
struct perf_evsel *selection;
bool lost_events, lost_events_warned;
float min_pcnt;
struct perf_session_env *env;
};
@@ -1777,6 +1829,7 @@ browse_hists:
ev_name = perf_evsel__name(pos);
key = perf_evsel__hists_browse(pos, nr_events, help,
ev_name, true, hbt,
menu->min_pcnt,
menu->env);
ui_browser__show_title(&menu->b, title);
switch (key) {
@@ -1838,6 +1891,7 @@ static bool filter_group_entries(struct ui_browser *self __maybe_unused,
static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
int nr_entries, const char *help,
struct hist_browser_timer *hbt,
float min_pcnt,
struct perf_session_env *env)
{
struct perf_evsel *pos;
@@ -1851,6 +1905,7 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
.nr_entries = nr_entries,
.priv = evlist,
},
.min_pcnt = min_pcnt,
.env = env,
};
@@ -1869,6 +1924,7 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
struct hist_browser_timer *hbt,
float min_pcnt,
struct perf_session_env *env)
{
int nr_entries = evlist->nr_entries;
@@ -1880,7 +1936,8 @@ single_entry:
const char *ev_name = perf_evsel__name(first);
return perf_evsel__hists_browse(first, nr_entries, help,
ev_name, false, hbt, env);
ev_name, false, hbt, min_pcnt,
env);
}
if (symbol_conf.event_group) {
@@ -1896,5 +1953,5 @@ single_entry:
}
return __perf_evlist__tui_browse_hists(evlist, nr_entries, help,
hbt, env);
hbt, min_pcnt, env);
}