[PATCH] perf stat: Do not open cgroups for BPF counters

[Namhyung Kim]

The --bpf-counters and --for-each-cgroup options use a set of shared
events among the given cgroups rather than adding events for each cgroup
respectively.  It only uses cgroup-ID to compare and calculate the
result.  So no need to open and keep FDs for cgroups in BPF mode.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
 tools/perf/builtin-stat.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index 92cdb2df7285befb..49e523058185b753 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -2888,7 +2888,8 @@ int cmd_stat(int argc, const char **argv)
 			goto out;
 		}
 
-		if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list, true) < 0) {
+		if (evlist__expand_cgroup(evsel_list, stat_config.cgroup_list,
+					  !target.use_bpf) < 0) {
 			parse_options_usage(stat_usage, stat_options,
 					    "for-each-cgroup", 0);
 			goto out;
-- 
2.55.0.795.g602f6c329a-goog