libbpf-tools: update cachestat for libbpf 1.0

Switch to libbpf 1.0 mode and adapt libbpf API usage accordingly.

Signed-off-by: Andrii Nakryiko <[email protected]>

libbpf-tools/cachestat.c

@@ -140,14 +140,9 @@ 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;
- }
-
  obj = cachestat_bpf__open_and_load();
  if (!obj) {
  fprintf(stderr, "failed to open and/or load BPF object\n");