Re: [PATCH 2/7] libperf: Move idx to perf_evsel::idx

From: Arnaldo Carvalho de Melo
Date: Wed Jul 07 2021 - 10:45:26 EST

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In reply to: Jiri Olsa: "[PATCH 2/7] libperf: Move idx to perf_evsel::idx"
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Em Tue, Jul 06, 2021 at 05:16:59PM +0200, Jiri Olsa escreveu:
> Moving evsel::idx to perf_evsel::idx, so we can move
> the group interface to libperf.

So perf_evsel__init() isn't static but also isn't in
tools/lib/perf/libperf.map so we're free to change its function
signature, right?

- Arnaldo

> Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
> ---
> tools/lib/perf/evlist.c | 1 +
> tools/lib/perf/evsel.c | 6 ++++--
> tools/lib/perf/include/internal/evsel.h | 4 +++-
> tools/perf/arch/x86/util/iostat.c | 4 ++--
> tools/perf/builtin-diff.c | 4 ++--
> tools/perf/builtin-report.c | 4 ++--
> tools/perf/builtin-top.c | 8 ++++----
> tools/perf/tests/evsel-roundtrip-name.c | 6 +++---
> tools/perf/tests/mmap-basic.c | 8 ++++----
> tools/perf/ui/browsers/annotate.c | 2 +-
> tools/perf/util/annotate.c | 8 ++++----
> tools/perf/util/evlist.c | 10 ++++------
> tools/perf/util/evsel.c | 3 +--
> tools/perf/util/evsel.h | 3 +--
> tools/perf/util/header.c | 10 +++++-----
> tools/perf/util/metricgroup.c | 14 +++++++-------
> tools/perf/util/parse-events.c | 2 +-
> tools/perf/util/python.c | 2 +-
> tools/perf/util/stream.c | 2 +-
> 19 files changed, 51 insertions(+), 50 deletions(-)
>
> diff --git a/tools/lib/perf/evlist.c b/tools/lib/perf/evlist.c
> index a0aaf385cbb5..68b90bbf0ffb 100644
> --- a/tools/lib/perf/evlist.c
> +++ b/tools/lib/perf/evlist.c
> @@ -66,6 +66,7 @@ static void perf_evlist__propagate_maps(struct perf_evlist *evlist)
> void perf_evlist__add(struct perf_evlist *evlist,
> struct perf_evsel *evsel)
> {
> + evsel->idx = evlist->nr_entries;
> list_add_tail(&evsel->node, &evlist->entries);
> evlist->nr_entries += 1;
> __perf_evlist__propagate_maps(evlist, evsel);
> diff --git a/tools/lib/perf/evsel.c b/tools/lib/perf/evsel.c
> index bd8c2f19ef74..dccdc3456b23 100644
> --- a/tools/lib/perf/evsel.c
> +++ b/tools/lib/perf/evsel.c
> @@ -18,10 +18,12 @@
> #include <sys/ioctl.h>
> #include <sys/mman.h>
>
> -void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr)
> +void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
> + int idx)
> {
> INIT_LIST_HEAD(&evsel->node);
> evsel->attr = *attr;
> + evsel->idx = idx;
> }
>
> struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
> @@ -29,7 +31,7 @@ struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr)
> struct perf_evsel *evsel = zalloc(sizeof(*evsel));
>
> if (evsel != NULL)
> - perf_evsel__init(evsel, attr);
> + perf_evsel__init(evsel, attr, 0);
>
> return evsel;
> }
> diff --git a/tools/lib/perf/include/internal/evsel.h b/tools/lib/perf/include/internal/evsel.h
> index 1c067d088bc6..86f674e36f62 100644
> --- a/tools/lib/perf/include/internal/evsel.h
> +++ b/tools/lib/perf/include/internal/evsel.h
> @@ -49,9 +49,11 @@ struct perf_evsel {
> /* parse modifier helper */
> int nr_members;
> bool system_wide;
> + int idx;
> };
>
> -void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr);
> +void perf_evsel__init(struct perf_evsel *evsel, struct perf_event_attr *attr,
> + int idx);
> int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
> void perf_evsel__close_fd(struct perf_evsel *evsel);
> void perf_evsel__free_fd(struct perf_evsel *evsel);
> diff --git a/tools/perf/arch/x86/util/iostat.c b/tools/perf/arch/x86/util/iostat.c
> index d63acb782b63..eeafe97b8105 100644
> --- a/tools/perf/arch/x86/util/iostat.c
> +++ b/tools/perf/arch/x86/util/iostat.c
> @@ -322,7 +322,7 @@ static int iostat_event_group(struct evlist *evl,
> }
>
> evlist__for_each_entry(evl, evsel) {
> - evsel->priv = list->rps[evsel->idx / metrics_count];
> + evsel->priv = list->rps[evsel->core.idx / metrics_count];
> }
> list->nr_entries = 0;
> err:
> @@ -428,7 +428,7 @@ void iostat_print_metric(struct perf_stat_config *config, struct evsel *evsel,
> {
> double iostat_value = 0;
> u64 prev_count_val = 0;
> - const char *iostat_metric = iostat_metric_by_idx(evsel->idx);
> + const char *iostat_metric = iostat_metric_by_idx(evsel->core.idx);
> u8 die = ((struct iio_root_port *)evsel->priv)->die;
> struct perf_counts_values *count = perf_counts(evsel->counts, die, 0);
>
> diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
> index f52b3a799e76..80450c0e8f36 100644
> --- a/tools/perf/builtin-diff.c
> +++ b/tools/perf/builtin-diff.c
> @@ -1031,12 +1031,12 @@ static int process_base_stream(struct data__file *data_base,
> continue;
>
> es_base = evsel_streams__entry(data_base->evlist_streams,
> - evsel_base->idx);
> + evsel_base->core.idx);
> if (!es_base)
> return -1;
>
> es_pair = evsel_streams__entry(data_pair->evlist_streams,
> - evsel_pair->idx);
> + evsel_pair->core.idx);
> if (!es_pair)
> return -1;
>
> diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
> index bc5c393021dc..4014de4da33b 100644
> --- a/tools/perf/builtin-report.c
> +++ b/tools/perf/builtin-report.c
> @@ -332,7 +332,7 @@ static int process_read_event(struct perf_tool *tool,
> const char *name = evsel__name(evsel);
> int err = perf_read_values_add_value(&rep->show_threads_values,
> event->read.pid, event->read.tid,
> - evsel->idx,
> + evsel->core.idx,
> name,
> event->read.value);
>
> @@ -666,7 +666,7 @@ static int report__collapse_hists(struct report *rep)
> evlist__for_each_entry(rep->session->evlist, pos) {
> struct hists *hists = evsel__hists(pos);
>
> - if (pos->idx == 0)
> + if (pos->core.idx == 0)
> hists->symbol_filter_str = rep->symbol_filter_str;
>
> hists->socket_filter = rep->socket_filter;
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index 2d570bfe7a56..76343a418e67 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -264,9 +264,9 @@ static void perf_top__show_details(struct perf_top *top)
>
> if (top->evlist->enabled) {
> if (top->zero)
> - symbol__annotate_zero_histogram(symbol, top->sym_evsel->idx);
> + symbol__annotate_zero_histogram(symbol, top->sym_evsel->core.idx);
> else
> - symbol__annotate_decay_histogram(symbol, top->sym_evsel->idx);
> + symbol__annotate_decay_histogram(symbol, top->sym_evsel->core.idx);
> }
> if (more != 0)
> printf("%d lines not displayed, maybe increase display entries [e]\n", more);
> @@ -530,7 +530,7 @@ static bool perf_top__handle_keypress(struct perf_top *top, int c)
> fprintf(stderr, "\nAvailable events:");
>
> evlist__for_each_entry(top->evlist, top->sym_evsel)
> - fprintf(stderr, "\n\t%d %s", top->sym_evsel->idx, evsel__name(top->sym_evsel));
> + fprintf(stderr, "\n\t%d %s", top->sym_evsel->core.idx, evsel__name(top->sym_evsel));
>
> prompt_integer(&counter, "Enter details event counter");
>
> @@ -541,7 +541,7 @@ static bool perf_top__handle_keypress(struct perf_top *top, int c)
> break;
> }
> evlist__for_each_entry(top->evlist, top->sym_evsel)
> - if (top->sym_evsel->idx == counter)
> + if (top->sym_evsel->core.idx == counter)
> break;
> } else
> top->sym_evsel = evlist__first(top->evlist);
> diff --git a/tools/perf/tests/evsel-roundtrip-name.c b/tools/perf/tests/evsel-roundtrip-name.c
> index b74cf80d1f10..5ebf56331904 100644
> --- a/tools/perf/tests/evsel-roundtrip-name.c
> +++ b/tools/perf/tests/evsel-roundtrip-name.c
> @@ -44,7 +44,7 @@ static int perf_evsel__roundtrip_cache_name_test(void)
>
> for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
> __evsel__hw_cache_type_op_res_name(type, op, i, name, sizeof(name));
> - if (evsel->idx != idx)
> + if (evsel->core.idx != idx)
> continue;
>
> ++idx;
> @@ -84,9 +84,9 @@ static int __perf_evsel__name_array_test(const char *names[], int nr_names,
>
> err = 0;
> evlist__for_each_entry(evlist, evsel) {
> - if (strcmp(evsel__name(evsel), names[evsel->idx / distance])) {
> + if (strcmp(evsel__name(evsel), names[evsel->core.idx / distance])) {
> --err;
> - pr_debug("%s != %s\n", evsel__name(evsel), names[evsel->idx / distance]);
> + pr_debug("%s != %s\n", evsel__name(evsel), names[evsel->core.idx / distance]);
> }
> }
>
> diff --git a/tools/perf/tests/mmap-basic.c b/tools/perf/tests/mmap-basic.c
> index 73ae8f7aa066..d38757db2dc2 100644
> --- a/tools/perf/tests/mmap-basic.c
> +++ b/tools/perf/tests/mmap-basic.c
> @@ -139,7 +139,7 @@ int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unuse
> " doesn't map to an evsel\n", sample.id);
> goto out_delete_evlist;
> }
> - nr_events[evsel->idx]++;
> + nr_events[evsel->core.idx]++;
> perf_mmap__consume(&md->core);
> }
> perf_mmap__read_done(&md->core);
> @@ -147,10 +147,10 @@ int test__basic_mmap(struct test *test __maybe_unused, int subtest __maybe_unuse
> out_init:
> err = 0;
> evlist__for_each_entry(evlist, evsel) {
> - if (nr_events[evsel->idx] != expected_nr_events[evsel->idx]) {
> + if (nr_events[evsel->core.idx] != expected_nr_events[evsel->core.idx]) {
> pr_debug("expected %d %s events, got %d\n",
> - expected_nr_events[evsel->idx],
> - evsel__name(evsel), nr_events[evsel->idx]);
> + expected_nr_events[evsel->core.idx],
> + evsel__name(evsel), nr_events[evsel->core.idx]);
> err = -1;
> goto out_delete_evlist;
> }
> diff --git a/tools/perf/ui/browsers/annotate.c b/tools/perf/ui/browsers/annotate.c
> index f5509a958e38..cd2ef8f3b474 100644
> --- a/tools/perf/ui/browsers/annotate.c
> +++ b/tools/perf/ui/browsers/annotate.c
> @@ -749,7 +749,7 @@ static int annotate_browser__run(struct annotate_browser *browser,
> hbt->timer(hbt->arg);
>
> if (delay_secs != 0) {
> - symbol__annotate_decay_histogram(sym, evsel->idx);
> + symbol__annotate_decay_histogram(sym, evsel->core.idx);
> hists__scnprintf_title(hists, title, sizeof(title));
> annotate_browser__show(&browser->b, title, help);
> }
> diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
> index abe1499a9164..aa04a3655236 100644
> --- a/tools/perf/util/annotate.c
> +++ b/tools/perf/util/annotate.c
> @@ -961,7 +961,7 @@ static int symbol__inc_addr_samples(struct map_symbol *ms,
> if (sym == NULL)
> return 0;
> src = symbol__hists(sym, evsel->evlist->core.nr_entries);
> - return src ? __symbol__inc_addr_samples(ms, src, evsel->idx, addr, sample) : 0;
> + return src ? __symbol__inc_addr_samples(ms, src, evsel->core.idx, addr, sample) : 0;
> }
>
> static int symbol__account_cycles(u64 addr, u64 start,
> @@ -2159,7 +2159,7 @@ static void annotation__calc_percent(struct annotation *notes,
>
> BUG_ON(i >= al->data_nr);
>
> - sym_hist = annotation__histogram(notes, evsel->idx);
> + sym_hist = annotation__histogram(notes, evsel->core.idx);
> data = &al->data[i++];
>
> calc_percent(sym_hist, hists, data, al->offset, end);
> @@ -2340,7 +2340,7 @@ static void print_summary(struct rb_root *root, const char *filename)
> static void symbol__annotate_hits(struct symbol *sym, struct evsel *evsel)
> {
> struct annotation *notes = symbol__annotation(sym);
> - struct sym_hist *h = annotation__histogram(notes, evsel->idx);
> + struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
> u64 len = symbol__size(sym), offset;
>
> for (offset = 0; offset < len; ++offset)
> @@ -2373,7 +2373,7 @@ int symbol__annotate_printf(struct map_symbol *ms, struct evsel *evsel,
> const char *d_filename;
> const char *evsel_name = evsel__name(evsel);
> struct annotation *notes = symbol__annotation(sym);
> - struct sym_hist *h = annotation__histogram(notes, evsel->idx);
> + struct sym_hist *h = annotation__histogram(notes, evsel->core.idx);
> struct annotation_line *pos, *queue = NULL;
> u64 start = map__rip_2objdump(map, sym->start);
> int printed = 2, queue_len = 0, addr_fmt_width;
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index 6ba9664089bd..6563ce3b9541 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -165,11 +165,9 @@ void evlist__delete(struct evlist *evlist)
>
> void evlist__add(struct evlist *evlist, struct evsel *entry)
> {
> - entry->evlist = evlist;
> - entry->idx = evlist->core.nr_entries;
> - entry->tracking = !entry->idx;
> -
> perf_evlist__add(&evlist->core, &entry->core);
> + entry->evlist = evlist;
> + entry->tracking = !entry->core.idx;
>
> if (evlist->core.nr_entries == 1)
> evlist__set_id_pos(evlist);
> @@ -232,7 +230,7 @@ void __evlist__set_leader(struct list_head *list)
> leader = list_entry(list->next, struct evsel, core.node);
> evsel = list_entry(list->prev, struct evsel, core.node);
>
> - leader->core.nr_members = evsel->idx - leader->idx + 1;
> + leader->core.nr_members = evsel->core.idx - leader->core.idx + 1;
>
> __evlist__for_each_entry(list, evsel) {
> evsel->leader = leader;
> @@ -2137,7 +2135,7 @@ struct evsel *evlist__find_evsel(struct evlist *evlist, int idx)
> struct evsel *evsel;
>
> evlist__for_each_entry(evlist, evsel) {
> - if (evsel->idx == idx)
> + if (evsel->core.idx == idx)
> return evsel;
> }
> return NULL;
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index b1c930eca40f..cce16814dc2c 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -239,8 +239,7 @@ bool evsel__is_function_event(struct evsel *evsel)
> void evsel__init(struct evsel *evsel,
> struct perf_event_attr *attr, int idx)
> {
> - perf_evsel__init(&evsel->core, attr);
> - evsel->idx = idx;
> + perf_evsel__init(&evsel->core, attr, idx);
> evsel->tracking = !idx;
> evsel->leader = evsel;
> evsel->unit = "";
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index bdad52a06438..09c290bce3cc 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -49,7 +49,6 @@ struct evsel {
> struct perf_evsel core;
> struct evlist *evlist;
> off_t id_offset;
> - int idx;
> int id_pos;
> int is_pos;
> unsigned int sample_size;
> @@ -406,7 +405,7 @@ int evsel__open_strerror(struct evsel *evsel, struct target *target,
>
> static inline int evsel__group_idx(struct evsel *evsel)
> {
> - return evsel->idx - evsel->leader->idx;
> + return evsel->core.idx - evsel->leader->core.idx;
> }
>
> /* Iterates group WITHOUT the leader. */
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index 0158d2945bab..9c8efb1898a0 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -789,7 +789,7 @@ static int write_group_desc(struct feat_fd *ff,
> evlist__for_each_entry(evlist, evsel) {
> if (evsel__is_group_leader(evsel) && evsel->core.nr_members > 1) {
> const char *name = evsel->group_name ?: "{anon_group}";
> - u32 leader_idx = evsel->idx;
> + u32 leader_idx = evsel->core.idx;
> u32 nr_members = evsel->core.nr_members;
>
> ret = do_write_string(ff, name);
> @@ -1844,7 +1844,7 @@ static struct evsel *read_event_desc(struct feat_fd *ff)
> msz = sz;
>
> for (i = 0, evsel = events; i < nre; evsel++, i++) {
> - evsel->idx = i;
> + evsel->core.idx = i;
>
> /*
> * must read entire on-file attr struct to
> @@ -2379,7 +2379,7 @@ static struct evsel *evlist__find_by_index(struct evlist *evlist, int idx)
> struct evsel *evsel;
>
> evlist__for_each_entry(evlist, evsel) {
> - if (evsel->idx == idx)
> + if (evsel->core.idx == idx)
> return evsel;
> }
>
> @@ -2393,7 +2393,7 @@ static void evlist__set_event_name(struct evlist *evlist, struct evsel *event)
> if (!event->name)
> return;
>
> - evsel = evlist__find_by_index(evlist, event->idx);
> + evsel = evlist__find_by_index(evlist, event->core.idx);
> if (!evsel)
> return;
>
> @@ -2739,7 +2739,7 @@ static int process_group_desc(struct feat_fd *ff, void *data __maybe_unused)
>
> i = nr = 0;
> evlist__for_each_entry(session->evlist, evsel) {
> - if (evsel->idx == (int) desc[i].leader_idx) {
> + if (evsel->core.idx == (int) desc[i].leader_idx) {
> evsel->leader = evsel;
> /* {anon_group} is a dummy name */
> if (strcmp(desc[i].name, "{anon_group}")) {
> diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> index d3cf2dee36c8..d956d9cf73f7 100644
> --- a/tools/perf/util/metricgroup.c
> +++ b/tools/perf/util/metricgroup.c
> @@ -219,7 +219,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
> if (has_constraint && ev->weak_group)
> continue;
> /* Ignore event if already used and merging is disabled. */
> - if (metric_no_merge && test_bit(ev->idx, evlist_used))
> + if (metric_no_merge && test_bit(ev->core.idx, evlist_used))
> continue;
> if (!has_constraint && ev->leader != current_leader) {
> /*
> @@ -269,7 +269,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
> for (i = 0; i < idnum; i++) {
> ev = metric_events[i];
> /* Don't free the used events. */
> - set_bit(ev->idx, evlist_used);
> + set_bit(ev->core.idx, evlist_used);
> /*
> * The metric leader points to the identically named event in
> * metric_events.
> @@ -291,7 +291,7 @@ static struct evsel *find_evsel_group(struct evlist *perf_evlist,
> evsel_same_pmu_or_none(ev->leader, metric_events[i]->leader))
> break;
> if (!strcmp(metric_events[i]->name, ev->name)) {
> - set_bit(ev->idx, evlist_used);
> + set_bit(ev->core.idx, evlist_used);
> ev->metric_leader = metric_events[i];
> }
> }
> @@ -391,7 +391,7 @@ static int metricgroup__setup_events(struct list_head *groups,
> }
>
> evlist__for_each_entry_safe(perf_evlist, tmp, evsel) {
> - if (!test_bit(evsel->idx, evlist_used)) {
> + if (!test_bit(evsel->core.idx, evlist_used)) {
> evlist__remove(perf_evlist, evsel);
> evsel__delete(evsel);
> }
> @@ -1312,7 +1312,7 @@ int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
> nd = rblist__entry(old_metric_events, i);
> old_me = container_of(nd, struct metric_event, nd);
>
> - evsel = evlist__find_evsel(evlist, old_me->evsel->idx);
> + evsel = evlist__find_evsel(evlist, old_me->evsel->core.idx);
> if (!evsel)
> return -EINVAL;
> new_me = metricgroup__lookup(new_metric_events, evsel, true);
> @@ -1320,7 +1320,7 @@ int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
> return -ENOMEM;
>
> pr_debug("copying metric event for cgroup '%s': %s (idx=%d)\n",
> - cgrp ? cgrp->name : "root", evsel->name, evsel->idx);
> + cgrp ? cgrp->name : "root", evsel->name, evsel->core.idx);
>
> list_for_each_entry(old_expr, &old_me->head, nd) {
> new_expr = malloc(sizeof(*new_expr));
> @@ -1363,7 +1363,7 @@ int metricgroup__copy_metric_events(struct evlist *evlist, struct cgroup *cgrp,
> /* copy evsel in the same position */
> for (idx = 0; idx < nr; idx++) {
> evsel = old_expr->metric_events[idx];
> - evsel = evlist__find_evsel(evlist, evsel->idx);
> + evsel = evlist__find_evsel(evlist, evsel->core.idx);
> if (evsel == NULL) {
> free(new_expr->metric_events);
> free(new_expr->metric_refs);
> diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
> index 84108c17f48d..e936c7c02d14 100644
> --- a/tools/perf/util/parse-events.c
> +++ b/tools/perf/util/parse-events.c
> @@ -1740,7 +1740,7 @@ parse_events__set_leader_for_uncore_aliase(char *name, struct list_head *list,
>
> leader = list_first_entry(list, struct evsel, core.node);
> evsel = list_last_entry(list, struct evsel, core.node);
> - total_members = evsel->idx - leader->idx + 1;
> + total_members = evsel->core.idx - leader->core.idx + 1;
>
> leaders = calloc(total_members, sizeof(uintptr_t));
> if (WARN_ON(!leaders))
> diff --git a/tools/perf/util/python.c b/tools/perf/util/python.c
> index 412f8e79e409..8feef3a05af7 100644
> --- a/tools/perf/util/python.c
> +++ b/tools/perf/util/python.c
> @@ -1032,7 +1032,7 @@ static PyObject *pyrf_evlist__add(struct pyrf_evlist *pevlist,
>
> Py_INCREF(pevsel);
> evsel = &((struct pyrf_evsel *)pevsel)->evsel;
> - evsel->idx = evlist->core.nr_entries;
> + evsel->core.idx = evlist->core.nr_entries;
> evlist__add(evlist, evsel);
>
> return Py_BuildValue("i", evlist->core.nr_entries);
> diff --git a/tools/perf/util/stream.c b/tools/perf/util/stream.c
> index 4bd5e5a00aa5..545e44981a27 100644
> --- a/tools/perf/util/stream.c
> +++ b/tools/perf/util/stream.c
> @@ -139,7 +139,7 @@ static int evlist__init_callchain_streams(struct evlist *evlist,
>
> hists__output_resort(hists, NULL);
> init_hot_callchain(hists, &es[i]);
> - es[i].evsel_idx = pos->idx;
> + es[i].evsel_idx = pos->core.idx;
> i++;
> }
>
> --
> 2.31.1
>

--

- Arnaldo

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