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Date: Mon, 14 Nov 2022 15:02:26 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Jiri Olsa <jolsa@...nel.org>
Cc: Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
LKML <linux-kernel@...r.kernel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
linux-perf-users@...r.kernel.org,
Kan Liang <kan.liang@...ux.intel.com>,
Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
James Clark <james.clark@....com>,
Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Subject: [PATCH 18/19] perf stat: Support --for-each-cgroup and --metric-only
When we have events for each cgroup, the metric should be printed for
each cgroup separately. Add print_cgroup_counter() to handle that
situation properly.
Also change print_metric_headers() not to print duplicate headers
by checking cgroups.
$ perf stat -a --for-each-cgroup system.slice,user.slice --metric-only sleep 1
Performance counter stats for 'system wide':
GHz insn per cycle branch-misses of all branches
system.slice 3.792 0.61 3.24%
user.slice 3.661 2.32 0.37%
1.016111516 seconds time elapsed
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
tools/perf/util/stat-display.c | 58 +++++++++++++++++++++++++++-------
1 file changed, 47 insertions(+), 11 deletions(-)
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index 7a0673be720b..cf25ed99b5df 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -168,10 +168,10 @@ static void print_cgroup_json(struct perf_stat_config *config, const char *cgrp_
fprintf(config->output, "\"cgroup\" : \"%s\", ", cgrp_name);
}
-static void print_cgroup(struct perf_stat_config *config, struct evsel *evsel)
+static void print_cgroup(struct perf_stat_config *config, struct cgroup *cgrp)
{
- if (nr_cgroups) {
- const char *cgrp_name = evsel->cgrp ? evsel->cgrp->name : "";
+ if (nr_cgroups || config->cgroup_list) {
+ const char *cgrp_name = cgrp ? cgrp->name : "";
if (config->json_output)
print_cgroup_json(config, cgrp_name);
@@ -340,6 +340,7 @@ struct outstate {
int nr;
struct aggr_cpu_id id;
struct evsel *evsel;
+ struct cgroup *cgrp;
};
static void new_line_std(struct perf_stat_config *config __maybe_unused,
@@ -552,6 +553,9 @@ static void print_metric_header(struct perf_stat_config *config,
os->evsel->priv != os->evsel->evlist->selected->priv)
return;
+ if (os->evsel->cgrp != os->cgrp)
+ return;
+
if (!valid_only_metric(unit))
return;
unit = fixunit(tbuf, os->evsel, unit);
@@ -642,7 +646,7 @@ static void abs_printout(struct perf_stat_config *config,
{
aggr_printout(config, evsel, id, nr);
print_counter_value(config, evsel, avg, ok);
- print_cgroup(config, evsel);
+ print_cgroup(config, evsel->cgrp);
}
static bool is_mixed_hw_group(struct evsel *counter)
@@ -838,7 +842,8 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
static void print_metric_begin(struct perf_stat_config *config,
struct evlist *evlist,
- char *prefix, int aggr_idx)
+ char *prefix, int aggr_idx,
+ struct cgroup *cgrp)
{
struct perf_stat_aggr *aggr;
struct aggr_cpu_id id;
@@ -854,6 +859,8 @@ static void print_metric_begin(struct perf_stat_config *config,
id = config->aggr_map->map[aggr_idx];
aggr = &evsel->stats->aggr[aggr_idx];
aggr_printout(config, evsel, id, aggr->nr);
+
+ print_cgroup(config, cgrp);
}
static void print_metric_end(struct perf_stat_config *config)
@@ -880,7 +887,7 @@ static void print_aggr(struct perf_stat_config *config,
* Without each counter has its own line.
*/
for (s = 0; s < config->aggr_map->nr; s++) {
- print_metric_begin(config, evlist, prefix, s);
+ print_metric_begin(config, evlist, prefix, s, /*cgrp=*/NULL);
evlist__for_each_entry(evlist, counter) {
if (counter->merged_stat)
@@ -935,7 +942,8 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
if (first) {
- print_metric_begin(config, evlist, prefix, counter_idx);
+ print_metric_begin(config, evlist, prefix,
+ counter_idx, /*cgrp=*/NULL);
first = false;
}
val = ps->aggr[counter_idx].counts.val;
@@ -960,7 +968,7 @@ static void print_metric_headers_std(struct perf_stat_config *config,
if (!no_indent) {
int len = aggr_header_lens[config->aggr_mode];
- if (nr_cgroups)
+ if (nr_cgroups || config->cgroup_list)
len += CGROUP_LEN + 1;
fprintf(config->output, "%*s", len, "");
@@ -1012,6 +1020,9 @@ static void print_metric_headers(struct perf_stat_config *config,
if (config->iostat_run)
iostat_print_header_prefix(config);
+ if (config->cgroup_list)
+ os.cgrp = evlist__first(evlist)->cgrp;
+
/* Print metrics headers only */
evlist__for_each_entry(evlist, counter) {
os.evsel = counter;
@@ -1305,6 +1316,28 @@ static void print_percore(struct perf_stat_config *config,
fputc('\n', output);
}
+static void print_cgroup_counter(struct perf_stat_config *config, struct evlist *evlist,
+ char *prefix)
+{
+ struct cgroup *cgrp = NULL;
+ struct evsel *counter;
+
+ evlist__for_each_entry(evlist, counter) {
+ if (cgrp != counter->cgrp) {
+ if (cgrp != NULL)
+ print_metric_end(config);
+
+ cgrp = counter->cgrp;
+ print_metric_begin(config, evlist, prefix,
+ /*aggr_idx=*/0, cgrp);
+ }
+
+ print_counter(config, counter, prefix);
+ }
+ if (cgrp)
+ print_metric_end(config);
+}
+
void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *config,
struct target *_target, struct timespec *ts, int argc, const char **argv)
{
@@ -1332,11 +1365,14 @@ void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *conf
break;
case AGGR_THREAD:
case AGGR_GLOBAL:
- if (config->iostat_run)
+ if (config->iostat_run) {
iostat_print_counters(evlist, config, ts, prefix = buf,
print_counter);
- else {
- print_metric_begin(config, evlist, prefix, /*aggr_idx=*/0);
+ } else if (config->cgroup_list) {
+ print_cgroup_counter(config, evlist, prefix);
+ } else {
+ print_metric_begin(config, evlist, prefix,
+ /*aggr_idx=*/0, /*cgrp=*/NULL);
evlist__for_each_entry(evlist, counter) {
print_counter(config, counter, prefix);
}
--
2.38.1.493.g58b659f92b-goog
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