libbpf: Support for syscall program type

Trivial support for syscall program type.

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210514003623.28033-5-alexei.starovoitov@gmail.com

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index e58f51b24574c6915ced6d2a03e13e011a93bdb1..05315048dd10432b307cd830c669103f84916d26 100644 (file)
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8904,6 +8904,8 @@ static const struct bpf_sec_def section_defs[] = {
                .expected_attach_type = BPF_TRACE_ITER,
                .is_attach_btf = true,
                .attach_fn = attach_iter),
+       SEC_DEF("syscall", SYSCALL,
+               .is_sleepable = true),
        BPF_EAPROG_SEC("xdp_devmap/",           BPF_PROG_TYPE_XDP,
                                                BPF_XDP_DEVMAP),
        BPF_EAPROG_SEC("xdp_cpumap/",           BPF_PROG_TYPE_XDP,