[PATCHv3 bpf-next 13/24] libbpf: Add bpf_object_cleanup_btf function

[Jiri Olsa <jolsa@kernel.org>]

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