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libbpf: Add bpf_link_create support for tracing_multi link

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Adding bpf_link_create support for tracing_multi link with
new tracing_multi record in struct bpf_link_create_opts.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20260606123955.345967-19-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa 2026-06-06 14:39:43 +02:00 committed by Alexei Starovoitov
parent fe9c8cb2b5
commit 630e85a9f0
2 changed files with 14 additions and 0 deletions
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9
tools/lib/bpf/bpf.c
View File

@ -845,6 +845,15 @@ int bpf_link_create(int prog_fd, int target_fd,
if (!OPTS_ZEROED(opts, uprobe_multi))
return libbpf_err(-EINVAL);
break;
case BPF_TRACE_FENTRY_MULTI:
case BPF_TRACE_FEXIT_MULTI:
case BPF_TRACE_FSESSION_MULTI:
attr.link_create.tracing_multi.ids = ptr_to_u64(OPTS_GET(opts, tracing_multi.ids, 0));
attr.link_create.tracing_multi.cookies = ptr_to_u64(OPTS_GET(opts, tracing_multi.cookies, 0));
attr.link_create.tracing_multi.cnt = OPTS_GET(opts, tracing_multi.cnt, 0);
if (!OPTS_ZEROED(opts, tracing_multi))
return libbpf_err(-EINVAL);
break;
case BPF_TRACE_RAW_TP:
case BPF_TRACE_FENTRY:
case BPF_TRACE_FEXIT:

5
tools/lib/bpf/bpf.h
View File

@ -469,6 +469,11 @@ struct bpf_link_create_opts {
__u32 relative_id;
__u64 expected_revision;
} cgroup;
struct {
const __u32 *ids;
const __u64 *cookies;
__u32 cnt;
} tracing_multi;
};
size_t :0;
};