[PATCH v1 03/12] perf stat: Don't size aggregation ids from user_requested_cpus

From: Ian Rogers
Date: Fri Jun 27 2025 - 15:25:06 EST


As evsels may have additional CPU terms, the user_requested_cpus may
not reflect all the CPUs requested. Use evlist->all_cpus to size the
array as that reflects all the CPUs potentially needed by the evlist.

Signed-off-by: Ian Rogers <irogers@xxxxxxxxxx>
---
tools/perf/builtin-stat.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 803bdcf89c0d..ff726f3e42ea 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -1513,11 +1513,8 @@ static int perf_stat_init_aggr_mode(void)
* taking the highest cpu number to be the size of
* the aggregation translate cpumap.
*/
- if (!perf_cpu_map__is_any_cpu_or_is_empty(evsel_list->core.user_requested_cpus))
- nr = perf_cpu_map__max(evsel_list->core.user_requested_cpus).cpu;
- else
- nr = 0;
- stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr + 1);
+ nr = perf_cpu_map__max(evsel_list->core.all_cpus).cpu + 1;
+ stat_config.cpus_aggr_map = cpu_aggr_map__empty_new(nr);
return stat_config.cpus_aggr_map ? 0 : -ENOMEM;
}

--
2.50.0.727.gbf7dc18ff4-goog