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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
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7
tools/perf/ui/stdio/hist.c
View file

@ -334,7 +334,7 @@ static int hist_entry__fprintf(struct hist_entry *he, size_t size,
}
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 @@ size_t hists__fprintf(struct hists *hists, bool show_header, int max_rows,
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)