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SubjectRe: [PATCH 18/20] perf stat: Display event stats using aggr counts
On Wed, Jun 14, 2023 at 6:40 AM Jiri Olsa <olsajiri@gmail.com> wrote:
>
> On Mon, Oct 17, 2022 at 07:02:25PM -0700, Namhyung Kim wrote:
> > Now aggr counts are ready for use. Convert the display routines to use
> > the aggr counts and update the shadow stat with them. It doesn't need
> > to aggregate counts or collect aliases anymore during the display. Get
> > rid of now unused struct perf_aggr_thread_value.
> >
> > Note that there's a difference in the display order among the aggr mode.
> > For per-core/die/socket/node aggregation, it shows relevant events in
> > the same unit together, whereas global/thread/no aggregation it shows
> > the same events for different units together. So it still uses separate
> > codes to display them due to the ordering.
> >
> > One more thing to note is that it breaks per-core event display for now.
> > The next patch will fix it to have identical output as of now.
> >
> > Acked-by: Ian Rogers <irogers@google.com>
> > Signed-off-by: Namhyung Kim <namhyung@kernel.org>
>
> hi,
> this one seems to break 'perf stat -r X' not sure why so far..
>
> final counts seems to be accumulated instead of displaying average, like:
>
>
> with this patch:
>
> Performance counter stats for './test_progs -n 103/1' (2 runs):
>
> 206,815,929 cycles:u ( +- 0.05% )
> 16,052,747,533 cycles:k ( +- 0.10% )
> 16,259,643,167 cycles ( +- 0.10% )
>
> 1.98093 +- 0.00586 seconds time elapsed ( +- 0.30% )
>
>
> without this patch:
>
> Performance counter stats for './test_progs -n 103/1' (2 runs):
>
> 103,300,812 cycles:u ( +- 0.37% )
> 8,016,856,866 cycles:k ( +- 0.32% )
> 8,120,200,572 cycles ( +- 0.32% )
>
> 1.97272 +- 0.00270 seconds time elapsed ( +- 0.14% )
>
>
> any idea? ;-)

Is this still broken in perf-tools-next? The patch is quite old and
there's been work in this area. I'm assuming yes, but thought it was
worth checking.

Thanks,
Ian

> thanks,
> jirka
>
>
>
>
> > ---
> > tools/perf/util/stat-display.c | 421 ++++-----------------------------
> > tools/perf/util/stat.c | 5 -
> > tools/perf/util/stat.h | 9 -
> > 3 files changed, 49 insertions(+), 386 deletions(-)
> >
> > diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
> > index 4113aa86772f..bfae2784609c 100644
> > --- a/tools/perf/util/stat-display.c
> > +++ b/tools/perf/util/stat-display.c
> > @@ -442,31 +442,6 @@ static void print_metric_header(struct perf_stat_config *config,
> > fprintf(os->fh, "%*s ", config->metric_only_len, unit);
> > }
> >
> > -static int first_shadow_map_idx(struct perf_stat_config *config,
> > - struct evsel *evsel, const struct aggr_cpu_id *id)
> > -{
> > - struct perf_cpu_map *cpus = evsel__cpus(evsel);
> > - struct perf_cpu cpu;
> > - int idx;
> > -
> > - if (config->aggr_mode == AGGR_NONE)
> > - return perf_cpu_map__idx(cpus, id->cpu);
> > -
> > - if (config->aggr_mode == AGGR_THREAD)
> > - return id->thread_idx;
> > -
> > - if (!config->aggr_get_id)
> > - return 0;
> > -
> > - perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
> > - struct aggr_cpu_id cpu_id = config->aggr_get_id(config, cpu);
> > -
> > - if (aggr_cpu_id__equal(&cpu_id, id))
> > - return idx;
> > - }
> > - return 0;
> > -}
> > -
> > static void abs_printout(struct perf_stat_config *config,
> > struct aggr_cpu_id id, int nr, struct evsel *evsel, double avg)
> > {
> > @@ -537,7 +512,7 @@ static bool is_mixed_hw_group(struct evsel *counter)
> > static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int nr,
> > struct evsel *counter, double uval,
> > char *prefix, u64 run, u64 ena, double noise,
> > - struct runtime_stat *st)
> > + struct runtime_stat *st, int map_idx)
> > {
> > struct perf_stat_output_ctx out;
> > struct outstate os = {
> > @@ -648,8 +623,7 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
> > print_running(config, run, ena);
> > }
> >
> > - perf_stat__print_shadow_stats(config, counter, uval,
> > - first_shadow_map_idx(config, counter, &id),
> > + perf_stat__print_shadow_stats(config, counter, uval, map_idx,
> > &out, &config->metric_events, st);
> > if (!config->csv_output && !config->metric_only && !config->json_output) {
> > print_noise(config, counter, noise);
> > @@ -657,34 +631,6 @@ static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int
> > }
> > }
> >
> > -static void aggr_update_shadow(struct perf_stat_config *config,
> > - struct evlist *evlist)
> > -{
> > - int idx, s;
> > - struct perf_cpu cpu;
> > - struct aggr_cpu_id s2, id;
> > - u64 val;
> > - struct evsel *counter;
> > - struct perf_cpu_map *cpus;
> > -
> > - for (s = 0; s < config->aggr_map->nr; s++) {
> > - id = config->aggr_map->map[s];
> > - evlist__for_each_entry(evlist, counter) {
> > - cpus = evsel__cpus(counter);
> > - val = 0;
> > - perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
> > - s2 = config->aggr_get_id(config, cpu);
> > - if (!aggr_cpu_id__equal(&s2, &id))
> > - continue;
> > - val += perf_counts(counter->counts, idx, 0)->val;
> > - }
> > - perf_stat__update_shadow_stats(counter, val,
> > - first_shadow_map_idx(config, counter, &id),
> > - &rt_stat);
> > - }
> > - }
> > -}
> > -
> > static void uniquify_event_name(struct evsel *counter)
> > {
> > char *new_name;
> > @@ -721,137 +667,51 @@ static void uniquify_event_name(struct evsel *counter)
> > counter->uniquified_name = true;
> > }
> >
> > -static void collect_all_aliases(struct perf_stat_config *config, struct evsel *counter,
> > - void (*cb)(struct perf_stat_config *config, struct evsel *counter, void *data,
> > - bool first),
> > - void *data)
> > +static bool hybrid_uniquify(struct evsel *evsel, struct perf_stat_config *config)
> > {
> > - struct evlist *evlist = counter->evlist;
> > - struct evsel *alias;
> > -
> > - alias = list_prepare_entry(counter, &(evlist->core.entries), core.node);
> > - list_for_each_entry_continue (alias, &evlist->core.entries, core.node) {
> > - /* Merge events with the same name, etc. but on different PMUs. */
> > - if (!strcmp(evsel__name(alias), evsel__name(counter)) &&
> > - alias->scale == counter->scale &&
> > - alias->cgrp == counter->cgrp &&
> > - !strcmp(alias->unit, counter->unit) &&
> > - evsel__is_clock(alias) == evsel__is_clock(counter) &&
> > - strcmp(alias->pmu_name, counter->pmu_name)) {
> > - alias->merged_stat = true;
> > - cb(config, alias, data, false);
> > - }
> > - }
> > + return evsel__is_hybrid(evsel) && !config->hybrid_merge;
> > }
> >
> > -static bool hybrid_merge(struct evsel *counter, struct perf_stat_config *config,
> > - bool check)
> > +static void uniquify_counter(struct perf_stat_config *config, struct evsel *counter)
> > {
> > - if (evsel__is_hybrid(counter)) {
> > - if (check)
> > - return config->hybrid_merge;
> > - else
> > - return !config->hybrid_merge;
> > - }
> > -
> > - return false;
> > -}
> > -
> > -static bool collect_data(struct perf_stat_config *config, struct evsel *counter,
> > - void (*cb)(struct perf_stat_config *config, struct evsel *counter, void *data,
> > - bool first),
> > - void *data)
> > -{
> > - if (counter->merged_stat)
> > - return false;
> > - cb(config, counter, data, true);
> > - if (config->no_merge || hybrid_merge(counter, config, false))
> > + if (config->no_merge || hybrid_uniquify(counter, config))
> > uniquify_event_name(counter);
> > - else if (counter->auto_merge_stats || hybrid_merge(counter, config, true))
> > - collect_all_aliases(config, counter, cb, data);
> > - return true;
> > -}
> > -
> > -struct aggr_data {
> > - u64 ena, run, val;
> > - struct aggr_cpu_id id;
> > - int nr;
> > - int cpu_map_idx;
> > -};
> > -
> > -static void aggr_cb(struct perf_stat_config *config,
> > - struct evsel *counter, void *data, bool first)
> > -{
> > - struct aggr_data *ad = data;
> > - int idx;
> > - struct perf_cpu cpu;
> > - struct perf_cpu_map *cpus;
> > - struct aggr_cpu_id s2;
> > -
> > - cpus = evsel__cpus(counter);
> > - perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
> > - struct perf_counts_values *counts;
> > -
> > - s2 = config->aggr_get_id(config, cpu);
> > - if (!aggr_cpu_id__equal(&s2, &ad->id))
> > - continue;
> > - if (first)
> > - ad->nr++;
> > - counts = perf_counts(counter->counts, idx, 0);
> > - /*
> > - * When any result is bad, make them all to give
> > - * consistent output in interval mode.
> > - */
> > - if (counts->ena == 0 || counts->run == 0 ||
> > - counter->counts->scaled == -1) {
> > - ad->ena = 0;
> > - ad->run = 0;
> > - break;
> > - }
> > - ad->val += counts->val;
> > - ad->ena += counts->ena;
> > - ad->run += counts->run;
> > - }
> > }
> >
> > static void print_counter_aggrdata(struct perf_stat_config *config,
> > struct evsel *counter, int s,
> > char *prefix, bool metric_only,
> > - bool *first, struct perf_cpu cpu)
> > + bool *first)
> > {
> > - struct aggr_data ad;
> > FILE *output = config->output;
> > u64 ena, run, val;
> > - int nr;
> > - struct aggr_cpu_id id;
> > double uval;
> > + struct perf_stat_evsel *ps = counter->stats;
> > + struct perf_stat_aggr *aggr = &ps->aggr[s];
> > + struct aggr_cpu_id id = config->aggr_map->map[s];
> > + double avg = aggr->counts.val;
> >
> > - ad.id = id = config->aggr_map->map[s];
> > - ad.val = ad.ena = ad.run = 0;
> > - ad.nr = 0;
> > - if (!collect_data(config, counter, aggr_cb, &ad))
> > + if (counter->supported && aggr->nr == 0)
> > return;
> >
> > - if (perf_pmu__has_hybrid() && ad.ena == 0)
> > - return;
> > + uniquify_counter(config, counter);
> > +
> > + val = aggr->counts.val;
> > + ena = aggr->counts.ena;
> > + run = aggr->counts.run;
> >
> > - nr = ad.nr;
> > - ena = ad.ena;
> > - run = ad.run;
> > - val = ad.val;
> > if (*first && metric_only) {
> > *first = false;
> > - aggr_printout(config, counter, id, nr);
> > + aggr_printout(config, counter, id, aggr->nr);
> > }
> > if (prefix && !metric_only)
> > fprintf(output, "%s", prefix);
> >
> > uval = val * counter->scale;
> > - if (cpu.cpu != -1)
> > - id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
> >
> > - printout(config, id, nr, counter, uval,
> > - prefix, run, ena, 1.0, &rt_stat);
> > + printout(config, id, aggr->nr, counter, uval,
> > + prefix, run, ena, avg, &rt_stat, s);
> > +
> > if (!metric_only)
> > fputc('\n', output);
> > }
> > @@ -869,8 +729,6 @@ static void print_aggr(struct perf_stat_config *config,
> > if (!config->aggr_map || !config->aggr_get_id)
> > return;
> >
> > - aggr_update_shadow(config, evlist);
> > -
> > /*
> > * With metric_only everything is on a single line.
> > * Without each counter has its own line.
> > @@ -881,188 +739,36 @@ static void print_aggr(struct perf_stat_config *config,
> >
> > first = true;
> > evlist__for_each_entry(evlist, counter) {
> > + if (counter->merged_stat)
> > + continue;
> > +
> > print_counter_aggrdata(config, counter, s,
> > - prefix, metric_only,
> > - &first, (struct perf_cpu){ .cpu = -1 });
> > + prefix, metric_only,
> > + &first);
> > }
> > if (metric_only)
> > fputc('\n', output);
> > }
> > }
> >
> > -static int cmp_val(const void *a, const void *b)
> > -{
> > - return ((struct perf_aggr_thread_value *)b)->val -
> > - ((struct perf_aggr_thread_value *)a)->val;
> > -}
> > -
> > -static struct perf_aggr_thread_value *sort_aggr_thread(
> > - struct evsel *counter,
> > - int *ret,
> > - struct target *_target)
> > -{
> > - int nthreads = perf_thread_map__nr(counter->core.threads);
> > - int i = 0;
> > - double uval;
> > - struct perf_aggr_thread_value *buf;
> > -
> > - buf = calloc(nthreads, sizeof(struct perf_aggr_thread_value));
> > - if (!buf)
> > - return NULL;
> > -
> > - for (int thread = 0; thread < nthreads; thread++) {
> > - int idx;
> > - u64 ena = 0, run = 0, val = 0;
> > -
> > - perf_cpu_map__for_each_idx(idx, evsel__cpus(counter)) {
> > - struct perf_counts_values *counts =
> > - perf_counts(counter->counts, idx, thread);
> > -
> > - val += counts->val;
> > - ena += counts->ena;
> > - run += counts->run;
> > - }
> > -
> > - uval = val * counter->scale;
> > -
> > - /*
> > - * Skip value 0 when enabling --per-thread globally,
> > - * otherwise too many 0 output.
> > - */
> > - if (uval == 0.0 && target__has_per_thread(_target))
> > - continue;
> > -
> > - buf[i].counter = counter;
> > - buf[i].id = aggr_cpu_id__empty();
> > - buf[i].id.thread_idx = thread;
> > - buf[i].uval = uval;
> > - buf[i].val = val;
> > - buf[i].run = run;
> > - buf[i].ena = ena;
> > - i++;
> > - }
> > -
> > - qsort(buf, i, sizeof(struct perf_aggr_thread_value), cmp_val);
> > -
> > - if (ret)
> > - *ret = i;
> > -
> > - return buf;
> > -}
> > -
> > -static void print_aggr_thread(struct perf_stat_config *config,
> > - struct target *_target,
> > - struct evsel *counter, char *prefix)
> > -{
> > - FILE *output = config->output;
> > - int thread, sorted_threads;
> > - struct aggr_cpu_id id;
> > - struct perf_aggr_thread_value *buf;
> > -
> > - buf = sort_aggr_thread(counter, &sorted_threads, _target);
> > - if (!buf) {
> > - perror("cannot sort aggr thread");
> > - return;
> > - }
> > -
> > - for (thread = 0; thread < sorted_threads; thread++) {
> > - if (prefix)
> > - fprintf(output, "%s", prefix);
> > -
> > - id = buf[thread].id;
> > - printout(config, id, 0, buf[thread].counter, buf[thread].uval,
> > - prefix, buf[thread].run, buf[thread].ena, 1.0,
> > - &rt_stat);
> > - fputc('\n', output);
> > - }
> > -
> > - free(buf);
> > -}
> > -
> > -struct caggr_data {
> > - double avg, avg_enabled, avg_running;
> > -};
> > -
> > -static void counter_aggr_cb(struct perf_stat_config *config __maybe_unused,
> > - struct evsel *counter, void *data,
> > - bool first __maybe_unused)
> > -{
> > - struct caggr_data *cd = data;
> > - struct perf_counts_values *aggr = &counter->counts->aggr;
> > -
> > - cd->avg += aggr->val;
> > - cd->avg_enabled += aggr->ena;
> > - cd->avg_running += aggr->run;
> > -}
> > -
> > -/*
> > - * Print out the results of a single counter:
> > - * aggregated counts in system-wide mode
> > - */
> > -static void print_counter_aggr(struct perf_stat_config *config,
> > - struct evsel *counter, char *prefix)
> > -{
> > - bool metric_only = config->metric_only;
> > - FILE *output = config->output;
> > - double uval;
> > - struct caggr_data cd = { .avg = 0.0 };
> > -
> > - if (!collect_data(config, counter, counter_aggr_cb, &cd))
> > - return;
> > -
> > - if (prefix && !metric_only)
> > - fprintf(output, "%s", prefix);
> > -
> > - uval = cd.avg * counter->scale;
> > - printout(config, aggr_cpu_id__empty(), 0, counter, uval, prefix, cd.avg_running,
> > - cd.avg_enabled, cd.avg, &rt_stat);
> > - if (!metric_only)
> > - fprintf(output, "\n");
> > -}
> > -
> > -static void counter_cb(struct perf_stat_config *config __maybe_unused,
> > - struct evsel *counter, void *data,
> > - bool first __maybe_unused)
> > -{
> > - struct aggr_data *ad = data;
> > -
> > - ad->val += perf_counts(counter->counts, ad->cpu_map_idx, 0)->val;
> > - ad->ena += perf_counts(counter->counts, ad->cpu_map_idx, 0)->ena;
> > - ad->run += perf_counts(counter->counts, ad->cpu_map_idx, 0)->run;
> > -}
> > -
> > -/*
> > - * Print out the results of a single counter:
> > - * does not use aggregated count in system-wide
> > - */
> > static void print_counter(struct perf_stat_config *config,
> > struct evsel *counter, char *prefix)
> > {
> > - FILE *output = config->output;
> > - u64 ena, run, val;
> > - double uval;
> > - int idx;
> > - struct perf_cpu cpu;
> > - struct aggr_cpu_id id;
> > -
> > - perf_cpu_map__for_each_cpu(cpu, idx, evsel__cpus(counter)) {
> > - struct aggr_data ad = { .cpu_map_idx = idx };
> > -
> > - if (!collect_data(config, counter, counter_cb, &ad))
> > - return;
> > - val = ad.val;
> > - ena = ad.ena;
> > - run = ad.run;
> > + bool metric_only = config->metric_only;
> > + bool first = false;
> > + int s;
> >
> > - if (prefix)
> > - fprintf(output, "%s", prefix);
> > + /* AGGR_THREAD doesn't have config->aggr_get_id */
> > + if (!config->aggr_map)
> > + return;
> >
> > - uval = val * counter->scale;
> > - id = aggr_cpu_id__cpu(cpu, /*data=*/NULL);
> > - printout(config, id, 0, counter, uval, prefix,
> > - run, ena, 1.0, &rt_stat);
> > + if (counter->merged_stat)
> > + return;
> >
> > - fputc('\n', output);
> > + for (s = 0; s < config->aggr_map->nr; s++) {
> > + print_counter_aggrdata(config, counter, s,
> > + prefix, metric_only,
> > + &first);
> > }
> > }
> >
> > @@ -1081,6 +787,7 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
> > u64 ena, run, val;
> > double uval;
> > struct aggr_cpu_id id;
> > + struct perf_stat_evsel *ps = counter->stats;
> > int counter_idx = perf_cpu_map__idx(evsel__cpus(counter), cpu);
> >
> > if (counter_idx < 0)
> > @@ -1093,13 +800,13 @@ static void print_no_aggr_metric(struct perf_stat_config *config,
> > aggr_printout(config, counter, id, 0);
> > first = false;
> > }
> > - val = perf_counts(counter->counts, counter_idx, 0)->val;
> > - ena = perf_counts(counter->counts, counter_idx, 0)->ena;
> > - run = perf_counts(counter->counts, counter_idx, 0)->run;
> > + val = ps->aggr[counter_idx].counts.val;
> > + ena = ps->aggr[counter_idx].counts.ena;
> > + run = ps->aggr[counter_idx].counts.run;
> >
> > uval = val * counter->scale;
> > printout(config, id, 0, counter, uval, prefix,
> > - run, ena, 1.0, &rt_stat);
> > + run, ena, 1.0, &rt_stat, counter_idx);
> > }
> > if (!first)
> > fputc('\n', config->output);
> > @@ -1135,8 +842,8 @@ static void print_metric_headers(struct perf_stat_config *config,
> > };
> > bool first = true;
> >
> > - if (config->json_output && !config->interval)
> > - fprintf(config->output, "{");
> > + if (config->json_output && !config->interval)
> > + fprintf(config->output, "{");
> >
> > if (prefix && !config->json_output)
> > fprintf(config->output, "%s", prefix);
> > @@ -1379,31 +1086,6 @@ static void print_footer(struct perf_stat_config *config)
> > "the same PMU. Try reorganizing the group.\n");
> > }
> >
> > -static void print_percore_thread(struct perf_stat_config *config,
> > - struct evsel *counter, char *prefix)
> > -{
> > - int s;
> > - struct aggr_cpu_id s2, id;
> > - struct perf_cpu_map *cpus;
> > - bool first = true;
> > - int idx;
> > - struct perf_cpu cpu;
> > -
> > - cpus = evsel__cpus(counter);
> > - perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
> > - s2 = config->aggr_get_id(config, cpu);
> > - for (s = 0; s < config->aggr_map->nr; s++) {
> > - id = config->aggr_map->map[s];
> > - if (aggr_cpu_id__equal(&s2, &id))
> > - break;
> > - }
> > -
> > - print_counter_aggrdata(config, counter, s,
> > - prefix, false,
> > - &first, cpu);
> > - }
> > -}
> > -
> > static void print_percore(struct perf_stat_config *config,
> > struct evsel *counter, char *prefix)
> > {
> > @@ -1416,15 +1098,14 @@ static void print_percore(struct perf_stat_config *config,
> > return;
> >
> > if (config->percore_show_thread)
> > - return print_percore_thread(config, counter, prefix);
> > + return print_counter(config, counter, prefix);
> >
> > for (s = 0; s < config->aggr_map->nr; s++) {
> > if (prefix && metric_only)
> > fprintf(output, "%s", prefix);
> >
> > print_counter_aggrdata(config, counter, s,
> > - prefix, metric_only,
> > - &first, (struct perf_cpu){ .cpu = -1 });
> > + prefix, metric_only, &first);
> > }
> >
> > if (metric_only)
> > @@ -1469,17 +1150,13 @@ void evlist__print_counters(struct evlist *evlist, struct perf_stat_config *conf
> > print_aggr(config, evlist, prefix);
> > break;
> > case AGGR_THREAD:
> > - evlist__for_each_entry(evlist, counter) {
> > - print_aggr_thread(config, _target, counter, prefix);
> > - }
> > - break;
> > case AGGR_GLOBAL:
> > if (config->iostat_run)
> > iostat_print_counters(evlist, config, ts, prefix = buf,
> > - print_counter_aggr);
> > + print_counter);
> > else {
> > evlist__for_each_entry(evlist, counter) {
> > - print_counter_aggr(config, counter, prefix);
> > + print_counter(config, counter, prefix);
> > }
> > if (metric_only)
> > fputc('\n', config->output);
> > diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
> > index c0955a0427ab..0316557adce9 100644
> > --- a/tools/perf/util/stat.c
> > +++ b/tools/perf/util/stat.c
> > @@ -565,11 +565,6 @@ int perf_stat_process_counter(struct perf_stat_config *config,
> > evsel__name(counter), count[0], count[1], count[2]);
> > }
> >
> > - /*
> > - * Save the full runtime - to allow normalization during printout:
> > - */
> > - perf_stat__update_shadow_stats(counter, *count, 0, &rt_stat);
> > -
> > return 0;
> > }
> >
> > diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
> > index 3d413ba8c68a..382a1ab92ce1 100644
> > --- a/tools/perf/util/stat.h
> > +++ b/tools/perf/util/stat.h
> > @@ -224,15 +224,6 @@ static inline void update_rusage_stats(struct rusage_stats *ru_stats, struct rus
> > struct evsel;
> > struct evlist;
> >
> > -struct perf_aggr_thread_value {
> > - struct evsel *counter;
> > - struct aggr_cpu_id id;
> > - double uval;
> > - u64 val;
> > - u64 run;
> > - u64 ena;
> > -};
> > -
> > bool __perf_stat_evsel__is(struct evsel *evsel, enum perf_stat_evsel_id id);
> >
> > #define perf_stat_evsel__is(evsel, id) \
> > --
> > 2.38.0.413.g74048e4d9e-goog
> >

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