[PATCH v6 bpf-next 3/4] libbpf: introduce section "iter.s/" for sleepable bpf_iter program

[Song Liu]

Sleepable iterator program have access to helper functions like bpf_d_path.

Acked-by: Yonghong Song <y...@fb.com>
Acked-by: KP Singh <kpsi...@kernel.org>
Signed-off-by: Song Liu <songliubrav...@fb.com>
---
 tools/lib/bpf/libbpf.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 2abbc38005684..903ccd7e93206 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8555,6 +8555,11 @@ static const struct bpf_sec_def section_defs[] = {
                .expected_attach_type = BPF_TRACE_ITER,
                .is_attach_btf = true,
                .attach_fn = attach_iter),
+       SEC_DEF("iter.s/", TRACING,
+               .expected_attach_type = BPF_TRACE_ITER,
+               .is_attach_btf = true,
+               .is_sleepable = true,
+               .attach_fn = attach_iter),
        BPF_EAPROG_SEC("xdp_devmap/",           BPF_PROG_TYPE_XDP,
                                                BPF_XDP_DEVMAP),
        BPF_EAPROG_SEC("xdp_cpumap/",           BPF_PROG_TYPE_XDP,
-- 
2.24.1