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-rw-r--r--tools/lib/bpf/libbpf.c5
-rw-r--r--tools/lib/bpf/libbpf.h2
2 files changed, 5 insertions, 2 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 8741c39adb1c..ead915aec349 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -74,9 +74,12 @@ static int __base_pr(enum libbpf_print_level level, const char *format,
74 74
75static libbpf_print_fn_t __libbpf_pr = __base_pr; 75static libbpf_print_fn_t __libbpf_pr = __base_pr;
76 76
77void libbpf_set_print(libbpf_print_fn_t fn) 77libbpf_print_fn_t libbpf_set_print(libbpf_print_fn_t fn)
78{ 78{
79 libbpf_print_fn_t old_print_fn = __libbpf_pr;
80
79 __libbpf_pr = fn; 81 __libbpf_pr = fn;
82 return old_print_fn;
80} 83}
81 84
82__printf(2, 3) 85__printf(2, 3)
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h
index 5cbf459ece0b..8a9d462a6f6d 100644
--- a/tools/lib/bpf/libbpf.h
+++ b/tools/lib/bpf/libbpf.h
@@ -57,7 +57,7 @@ enum libbpf_print_level {
57typedef int (*libbpf_print_fn_t)(enum libbpf_print_level level, 57typedef int (*libbpf_print_fn_t)(enum libbpf_print_level level,
58 const char *, va_list ap); 58 const char *, va_list ap);
59 59
60LIBBPF_API void libbpf_set_print(libbpf_print_fn_t fn); 60LIBBPF_API libbpf_print_fn_t libbpf_set_print(libbpf_print_fn_t fn);
61 61
62/* Hide internal to user */ 62/* Hide internal to user */
63struct bpf_object; 63struct bpf_object;