Commit 95b861a7 authored by Namhyung Kim's avatar Namhyung Kim Committed by Daniel Borkmann
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bpf: Allow bpf_get_current_ancestor_cgroup_id for tracing 



Allow the helper to be called from tracing programs. This is needed to
handle cgroup hiererachies in the program.

Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210627153627.824198-1-namhyung@kernel.org
parent 328aac5e

kernel/trace/bpf_trace.c

+2 −0
Original line number Diff line number Diff line
@@ -1017,6 +1017,8 @@ bpf_tracing_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog) 
#ifdef CONFIG_CGROUPS

	case BPF_FUNC_get_current_cgroup_id:

		return &bpf_get_current_cgroup_id_proto;

	case BPF_FUNC_get_current_ancestor_cgroup_id:

		return &bpf_get_current_ancestor_cgroup_id_proto;

#endif

	case BPF_FUNC_send_signal:

		return &bpf_send_signal_proto;