perf report: Add --percent-limit option
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>
diff --git a/tools/perf/ui/stdio/hist.c b/tools/perf/ui/stdio/hist.c
index ff1f60c..ae7a754 100644
--- a/tools/perf/ui/stdio/hist.c
+++ b/tools/perf/ui/stdio/hist.c
@@ -334,7 +334,7 @@
}
size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
- int max_cols, FILE *fp)
+ int max_cols, float min_pcnt, FILE *fp)
{
struct perf_hpp_fmt *fmt;
struct sort_entry *se;
@@ -440,10 +440,15 @@
print_entries:
for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
+ float percent = h->stat.period * 100.0 /
+ hists->stats.total_period;
if (h->filtered)
continue;
+ if (percent < min_pcnt)
+ continue;
+
ret += hist_entry__fprintf(h, max_cols, hists, fp);
if (max_rows && ++nr_rows >= max_rows)