From 41003dd0241c2ceb2461a88a18ff461795f2af57 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 9 Dec 2020 15:29:12 +0100 Subject: [PATCH] selftests/bpf: Make selftest compilation work on clang 11 We can't compile test_core_reloc_module.c selftest with clang 11, compile fails with: CLNG-LLC [test_maps] test_core_reloc_module.o progs/test_core_reloc_module.c:57:21: error: use of unknown builtin \ '__builtin_preserve_type_info' [-Wimplicit-function-declaration] out->read_ctx_sz = bpf_core_type_size(struct bpf_testmod_test_read_ctx); Skipping these tests if __builtin_preserve_type_info() is not supported by compiler. Signed-off-by: Jiri Olsa Signed-off-by: Daniel Borkmann Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20201209142912.99145-1-jolsa@kernel.org --- tools/testing/selftests/bpf/progs/test_core_reloc_module.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/testing/selftests/bpf/progs/test_core_reloc_module.c b/tools/testing/selftests/bpf/progs/test_core_reloc_module.c index 5636395..f59f175 100644 --- a/tools/testing/selftests/bpf/progs/test_core_reloc_module.c +++ b/tools/testing/selftests/bpf/progs/test_core_reloc_module.c @@ -40,6 +40,7 @@ int BPF_PROG(test_core_module_probed, struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx) { +#if __has_builtin(__builtin_preserve_enum_value) struct core_reloc_module_output *out = (void *)&data.out; __u64 pid_tgid = bpf_get_current_pid_tgid(); __u32 real_tgid = (__u32)(pid_tgid >> 32); @@ -61,6 +62,9 @@ int BPF_PROG(test_core_module_probed, out->len_exists = bpf_core_field_exists(read_ctx->len); out->comm_len = BPF_CORE_READ_STR_INTO(&out->comm, task, comm); +#else + data.skip = true; +#endif return 0; } @@ -70,6 +74,7 @@ int BPF_PROG(test_core_module_direct, struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx) { +#if __has_builtin(__builtin_preserve_enum_value) struct core_reloc_module_output *out = (void *)&data.out; __u64 pid_tgid = bpf_get_current_pid_tgid(); __u32 real_tgid = (__u32)(pid_tgid >> 32); @@ -91,6 +96,9 @@ int BPF_PROG(test_core_module_direct, out->len_exists = bpf_core_field_exists(read_ctx->len); out->comm_len = BPF_CORE_READ_STR_INTO(&out->comm, task, comm); +#else + data.skip = true; +#endif return 0; } -- 2.7.4