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authorNamhyung Kim <namhyung@kernel.org>2014-01-14 11:52:48 +0900
committerJiri Olsa <jolsa@redhat.com>2014-04-16 17:16:03 +0200
commitf2148330544a697481219b5bc34261f6dd049bfb (patch)
treeb08733dad6f875401f8751e7f7402443372d28eb /tools/perf/builtin-report.c
parent1ab1fa5dfb429c533fbc791e524788cf0cc43775 (diff)
downloadop-kernel-dev-f2148330544a697481219b5bc34261f6dd049bfb.zip
op-kernel-dev-f2148330544a697481219b5bc34261f6dd049bfb.tar.gz
perf report: Add --percentage option
The --percentage option is for controlling overhead percentage displayed. It can only receive either of "relative" or "absolute". "relative" means it's relative to filtered entries only so that the sum of shown entries will be always 100%. "absolute" means it retains the original value before and after the filter is applied. $ perf report -s comm # Overhead Command # ........ ............ # 74.19% cc1 7.61% gcc 6.11% as 4.35% sh 4.14% make 1.13% fixdep ... $ perf report -s comm -c cc1,gcc --percentage absolute # Overhead Command # ........ ............ # 74.19% cc1 7.61% gcc $ perf report -s comm -c cc1,gcc --percentage relative # Overhead Command # ........ ............ # 90.69% cc1 9.31% gcc Note that it has zero effect if no filter was applied. Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1397145720-8063-3-git-send-email-namhyung@kernel.org Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Diffstat (limited to 'tools/perf/builtin-report.c')
-rw-r--r--tools/perf/builtin-report.c30
1 files changed, 28 insertions, 2 deletions
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 2fca56c9..7ec351b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -343,6 +343,11 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
char buf[512];
size_t size = sizeof(buf);
+ if (symbol_conf.filter_relative) {
+ nr_samples = hists->stats.nr_non_filtered_samples;
+ nr_events = hists->stats.total_non_filtered_period;
+ }
+
if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;
@@ -350,8 +355,13 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
evname = buf;
for_each_group_member(pos, evsel) {
- nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
- nr_events += pos->hists.stats.total_period;
+ if (symbol_conf.filter_relative) {
+ nr_samples += pos->hists.stats.nr_non_filtered_samples;
+ nr_events += pos->hists.stats.total_non_filtered_period;
+ } else {
+ nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
+ nr_events += pos->hists.stats.total_period;
+ }
}
}
@@ -707,6 +717,20 @@ parse_percent_limit(const struct option *opt, const char *str,
return 0;
}
+static int
+parse_percentage(const struct option *opt __maybe_unused, const char *str,
+ int unset __maybe_unused)
+{
+ if (!strcmp(str, "relative"))
+ symbol_conf.filter_relative = true;
+ else if (!strcmp(str, "absolute"))
+ symbol_conf.filter_relative = false;
+ else
+ return -1;
+
+ return 0;
+}
+
int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
{
struct perf_session *session;
@@ -829,6 +853,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
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_CALLBACK(0, "percentage", NULL, "relative|absolute",
+ "how to display percentage of filtered entries", parse_percentage),
OPT_END()
};
struct perf_data_file file = {
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