[PATCHv3 bpf-next 13/24] libbpf: Add bpf_object_cleanup_btf function
From: Jiri Olsa <jolsa@kernel.org>
Date: 2026-03-16 07:54:05
Also in:
linux-trace-kernel
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [library] (libbpf), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds
Adding bpf_object_cleanup_btf function to cleanup btf objects. It will be used in following changes. Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/lib/bpf/libbpf.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 06fb382557b4..64c1ab005e6d 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c@@ -8885,13 +8885,10 @@ static void bpf_object_unpin(struct bpf_object *obj) bpf_map__unpin(&obj->maps[i], NULL); } -static void bpf_object_post_load_cleanup(struct bpf_object *obj) +static void bpf_object_cleanup_btf(struct bpf_object *obj) { int i; - /* clean up fd_array */ - zfree(&obj->fd_array); - /* clean up module BTFs */ for (i = 0; i < obj->btf_module_cnt; i++) { close(obj->btf_modules[i].fd);
@@ -8899,6 +8896,8 @@ static void bpf_object_post_load_cleanup(struct bpf_object *obj) free(obj->btf_modules[i].name); } obj->btf_module_cnt = 0; + obj->btf_module_cap = 0; + obj->btf_modules_loaded = false; zfree(&obj->btf_modules); /* clean up vmlinux BTF */
@@ -8906,6 +8905,15 @@ static void bpf_object_post_load_cleanup(struct bpf_object *obj) obj->btf_vmlinux = NULL; } +static void bpf_object_post_load_cleanup(struct bpf_object *obj) +{ + /* clean up fd_array */ + zfree(&obj->fd_array); + + /* clean up BTF */ + bpf_object_cleanup_btf(obj); +} + static int bpf_object_prepare(struct bpf_object *obj, const char *target_btf_path) { int err;
--
2.53.0