bpf: Fix test_obj_id.c for llvm 5.0
authorMartin KaFai Lau <kafai@fb.com>
Fri, 9 Jun 2017 05:30:17 +0000 (22:30 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 9 Jun 2017 19:15:11 +0000 (15:15 -0400)
llvm 5.0 does not like the section name and the function name
to be the same:

clang -I. -I./include/uapi -I../../../include/uapi \
-I../../../../samples/bpf/ \
-Wno-compare-distinct-pointer-types \
-O2 -target bpf -c \
linux/tools/testing/selftests/bpf/test_obj_id.c -o \
linux/tools/testing/selftests/bpf/test_obj_id.o
fatal error: error in backend: 'test_prog_id' label emitted multiple times to
assembly file
clang-5.0: error: clang frontend command failed with exit code 70 (use -v to
see invocation)
clang version 5.0.0 (trunk 304326) (llvm/trunk 304329)

This patch makes changes to the section name and the function name.

Fixes: 95b9afd3987f ("bpf: Test for bpf ID")
Reported-by: Alexei Starovoitov <ast@fb.com>
Reported-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
tools/testing/selftests/bpf/test_obj_id.c

index d8723aa..880d296 100644 (file)
@@ -23,8 +23,8 @@ struct bpf_map_def SEC("maps") test_map_id = {
        .max_entries = 1,
 };
 
-SEC("test_prog_id")
-int test_prog_id(struct __sk_buff *skb)
+SEC("test_obj_id_dummy")
+int test_obj_id(struct __sk_buff *skb)
 {
        __u32 key = 0;
        __u64 *value;