diff mbox series

[v3,bpf-next,3/4] libbpf: introduce section "iter.s/" for sleepable bpf_iter program

Message ID 20210107041801.2003241-4-songliubraving@fb.com (mailing list archive)
State New, archived
Headers show
Series introduce bpf_iter for task_vma | expand

Commit Message

Song Liu Jan. 7, 2021, 4:18 a.m. UTC 
Sleepable iterator program have access to helper functions like bpf_d_path.

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

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index 6ae748f6ea118..12ad4593a91cb 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8541,6 +8541,11 @@  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,