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authorAndrii Nakryiko <[email protected]>2019-07-28 03:25:26 +0000
committerAlexei Starovoitov <[email protected]>2019-07-28 05:36:19 +0000
commite87fd8bae44c3eaa6205c9c81419e773896dc157 (patch)
treee503465a3c5227bc9c1872a16139c396e87801e7 /tools/lib/bpf/libbpf.h
parentselftests/bpf: add test selectors by number and name to test_progs (diff)
downloadkernel-e87fd8bae44c3eaa6205c9c81419e773896dc157.tar.gz
kernel-e87fd8bae44c3eaa6205c9c81419e773896dc157.zip
libbpf: return previous print callback from libbpf_set_print
By returning previously set print callback from libbpf_set_print, it's possible to restore it, eventually. This is useful when running many independent test with one default print function, but overriding log verbosity for particular subset of tests. Signed-off-by: Andrii Nakryiko <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
-rw-r--r--tools/lib/bpf/libbpf.h2
1 files changed, 1 insertions, 1 deletions
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 {
typedef int (*libbpf_print_fn_t)(enum libbpf_print_level level,
const char *, va_list ap);
-LIBBPF_API void libbpf_set_print(libbpf_print_fn_t fn);
+LIBBPF_API libbpf_print_fn_t libbpf_set_print(libbpf_print_fn_t fn);
/* Hide internal to user */
struct bpf_object;