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bpf: Allow bpf_get_current_ancestor_cgroup_id for tracing
author
Namhyung Kim
<namhyung@kernel.org>
Sun, 27 Jun 2021 15:36:27 +0000
(08:36 -0700)
committer
Daniel Borkmann
<daniel@iogearbox.net>
Mon, 28 Jun 2021 13:43:02 +0000
(15:43 +0200)
Allow the helper to be called from tracing programs. This is needed to
handle cgroup hiererachies in the program.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link:
https://lore.kernel.org/bpf/20210627153627.824198-1-namhyung@kernel.org
kernel/trace/bpf_trace.c
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diff --git
a/kernel/trace/bpf_trace.c
b/kernel/trace/bpf_trace.c
index
7a52bc1
..
64bd2d8
100644
(file)
--- a/
kernel/trace/bpf_trace.c
+++ b/
kernel/trace/bpf_trace.c
@@
-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;