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-rw-r--r--tools/testing/selftests/bpf/bench.c3
-rw-r--r--tools/testing/selftests/bpf/bench.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/bench.c b/tools/testing/selftests/bpf/bench.c
index 0b5d2b5303c9..56f1c166a57b 100644
--- a/tools/testing/selftests/bpf/bench.c
+++ b/tools/testing/selftests/bpf/bench.c
@@ -469,7 +469,7 @@ static int next_cpu(struct cpu_set *cpu_set)
exit(1);
}
- return cpu_set->next_cpu++;
+ return cpu_set->next_cpu++ % env.nr_cpus;
}
static struct bench_state {
@@ -659,6 +659,7 @@ static void collect_measurements(long delta_ns) {
int main(int argc, char **argv)
{
+ env.nr_cpus = get_nprocs();
parse_cmdline_args_init(argc, argv);
if (env.list) {
diff --git a/tools/testing/selftests/bpf/bench.h b/tools/testing/selftests/bpf/bench.h
index 402729c6a3ac..7ff32be3d730 100644
--- a/tools/testing/selftests/bpf/bench.h
+++ b/tools/testing/selftests/bpf/bench.h
@@ -27,6 +27,7 @@ struct env {
bool quiet;
int consumer_cnt;
int producer_cnt;
+ int nr_cpus;
struct cpu_set prod_cpus;
struct cpu_set cons_cpus;
};