libbpf-tools: update runqlen for libbpf 1.0

Switch to libbpf 1.0 mode and adapt libbpf API usage accordingly. Signed-off-by: Andrii Nakryiko <[email protected]>
ego · Dec 20, 2021 · a7f0148 · a7f0148
1 parent 865f990
commit a7f0148
Showing 1 changed file with 3 additions and 10 deletions.
diff --git a/libbpf-tools/runqlen.c b/libbpf-tools/runqlen.c
@@ -145,10 +145,8 @@ static int open_and_attach_perf_event(int freq, struct bpf_program *prog,
  return -1;
  }
  links[i] = bpf_program__attach_perf_event(prog, fd);
- if (libbpf_get_error(links[i])) {
- fprintf(stderr, "failed to attach perf event on cpu: "
- "%d\n", i);
- links[i] = NULL;
+ if (!links[i]) {
+ fprintf(stderr, "failed to attach perf event on cpu: %d\n", i);
  close(fd);
  return -1;
  }
@@ -232,14 +230,9 @@ int main(int argc, char **argv)
  if (err)
  return err;
 
+ libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
  libbpf_set_print(libbpf_print_fn);
 
- err = bump_memlock_rlimit();
- if (err) {
- fprintf(stderr, "failed to increase rlimit: %d\n", err);
- return 1;
- }
-
  nr_cpus = libbpf_num_possible_cpus();
  if (nr_cpus < 0) {
  printf("failed to get # of possible cpus: '%s'!\n",