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/builtin-report.c b/tools/perf/builtin-report.c
index 0f0cf24..0a4979b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -52,6 +52,7 @@
symbol_filter_t annotate_init;
const char *cpu_list;
const char *symbol_filter_str;
+ float min_percent;
DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
};
@@ -456,7 +457,7 @@
continue;
hists__fprintf_nr_sample_events(rep, hists, evname, stdout);
- hists__fprintf(hists, true, 0, 0, stdout);
+ hists__fprintf(hists, true, 0, 0, rep->min_percent, stdout);
fprintf(stdout, "\n\n");
}
@@ -575,8 +576,8 @@
if (use_browser > 0) {
if (use_browser == 1) {
ret = perf_evlist__tui_browse_hists(session->evlist,
- help,
- NULL,
+ help, NULL,
+ rep->min_percent,
&session->header.env);
/*
* Usually "ret" is the last pressed key, and we only
@@ -587,7 +588,7 @@
} else if (use_browser == 2) {
perf_evlist__gtk_browse_hists(session->evlist, help,
- NULL);
+ NULL, rep->min_percent);
}
} else
perf_evlist__tty_browse_hists(session->evlist, rep, help);
@@ -698,6 +699,16 @@
return 0;
}
+static int
+parse_percent_limit(const struct option *opt, const char *str,
+ int unset __maybe_unused)
+{
+ struct perf_report *rep = opt->value;
+
+ rep->min_percent = strtof(str, NULL);
+ return 0;
+}
+
int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
{
struct perf_session *session;
@@ -807,6 +818,8 @@
OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
"Disable symbol demangling"),
OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
+ OPT_CALLBACK(0, "percent-limit", &report, "percent",
+ "Don't show entries under that percent", parse_percent_limit),
OPT_END()
};