diff options
Diffstat (limited to 'samples/bpf/tracex6_user.c')
| -rw-r--r-- | samples/bpf/tracex6_user.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/samples/bpf/tracex6_user.c b/samples/bpf/tracex6_user.c index a8c22dcf8e4e..89ab8d408474 100644 --- a/samples/bpf/tracex6_user.c +++ b/samples/bpf/tracex6_user.c @@ -23,6 +23,7 @@ static void check_on_cpu(int cpu, struct perf_event_attr *attr) { + struct bpf_perf_event_value value2; int pmu_fd, error = 0; cpu_set_t set; __u64 value; @@ -47,8 +48,18 @@ static void check_on_cpu(int cpu, struct perf_event_attr *attr) fprintf(stderr, "Value missing for CPU %d\n", cpu); error = 1; goto on_exit; + } else { + fprintf(stderr, "CPU %d: %llu\n", cpu, value); + } + /* The above bpf_map_lookup_elem should trigger the second kprobe */ + if (bpf_map_lookup_elem(map_fd[2], &cpu, &value2)) { + fprintf(stderr, "Value2 missing for CPU %d\n", cpu); + error = 1; + goto on_exit; + } else { + fprintf(stderr, "CPU %d: counter: %llu, enabled: %llu, running: %llu\n", cpu, + value2.counter, value2.enabled, value2.running); } - fprintf(stderr, "CPU %d: %llu\n", cpu, value); on_exit: assert(bpf_map_delete_elem(map_fd[0], &cpu) == 0 || error); |