diff options
Diffstat (limited to 'tools/perf/util/bpf_off_cpu.c')
| -rw-r--r-- | tools/perf/util/bpf_off_cpu.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/tools/perf/util/bpf_off_cpu.c b/tools/perf/util/bpf_off_cpu.c index 01f70b8e705a..6af36142dc5a 100644 --- a/tools/perf/util/bpf_off_cpu.c +++ b/tools/perf/util/bpf_off_cpu.c @@ -98,28 +98,31 @@ static void off_cpu_finish(void *arg __maybe_unused) /* v5.18 kernel added prev_state arg, so it needs to check the signature */ static void check_sched_switch_args(void) { - const struct btf *btf = bpf_object__btf(skel->obj); + struct btf *btf = btf__load_vmlinux_btf(); const struct btf_type *t1, *t2, *t3; u32 type_id; type_id = btf__find_by_name_kind(btf, "btf_trace_sched_switch", BTF_KIND_TYPEDEF); if ((s32)type_id < 0) - return; + goto cleanup; t1 = btf__type_by_id(btf, type_id); if (t1 == NULL) - return; + goto cleanup; t2 = btf__type_by_id(btf, t1->type); if (t2 == NULL || !btf_is_ptr(t2)) - return; + goto cleanup; t3 = btf__type_by_id(btf, t2->type); - if (t3 && btf_is_func_proto(t3) && btf_vlen(t3) == 4) { + /* btf_trace func proto has one more argument for the context */ + if (t3 && btf_is_func_proto(t3) && btf_vlen(t3) == 5) { /* new format: pass prev_state as 4th arg */ skel->rodata->has_prev_state = true; } +cleanup: + btf__free(btf); } int off_cpu_prepare(struct evlist *evlist, struct target *target, |