perf tools: Move libbpf init in libbpf_init function

Move the libbpf init code into a single function, so that we have a single
place doing that.

Signed-off-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Alexei Starovoitov <[email protected]>
Cc: Andrii Nakryiko <[email protected]>
Cc: Daniel Borkmann <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: John Fastabend <[email protected]>
Cc: Martin KaFai Lau <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: Yonghong Song <[email protected]>
Cc: [email protected]
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

1 files changed, 18 insertions, 9 deletions

diff --git a/tools/perf/util/bpf-loader.c b/tools/perf/util/bpf-loader.c
index b72cef1ae959..f8ad581ea247 100644
--- a/tools/perf/util/bpf-loader.c
+++ b/tools/perf/util/bpf-loader.c
@@ -99,16 +99,26 @@ static int bpf_perf_object__add(struct bpf_object *obj)
 	return perf_obj ? 0 : -ENOMEM;
 }
 
+static int libbpf_init(void)
+{
+	if (libbpf_initialized)
+		return 0;
+
+	libbpf_set_print(libbpf_perf_print);
+	libbpf_initialized = true;
+	return 0;
+}
+
 struct bpf_object *
 bpf__prepare_load_buffer(void *obj_buf, size_t obj_buf_sz, const char *name)
 {
 	LIBBPF_OPTS(bpf_object_open_opts, opts, .object_name = name);
 	struct bpf_object *obj;
+	int err;
 
-	if (!libbpf_initialized) {
-		libbpf_set_print(libbpf_perf_print);
-		libbpf_initialized = true;
-	}
+	err = libbpf_init();
+	if (err)
+		return ERR_PTR(err);
 
 	obj = bpf_object__open_mem(obj_buf, obj_buf_sz, &opts);
 	if (IS_ERR_OR_NULL(obj)) {
@@ -135,14 +145,13 @@ struct bpf_object *bpf__prepare_load(const char *filename, bool source)
 {
 	LIBBPF_OPTS(bpf_object_open_opts, opts, .object_name = filename);
 	struct bpf_object *obj;
+	int err;
 
-	if (!libbpf_initialized) {
-		libbpf_set_print(libbpf_perf_print);
-		libbpf_initialized = true;
-	}
+	err = libbpf_init();
+	if (err)
+		return ERR_PTR(err);
 
 	if (source) {
-		int err;
 		void *obj_buf;
 		size_t obj_buf_sz;