[PATCH] 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: Namhyung Kim <namhyung@kernel.org>
---
 kernel/trace/bpf_trace.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 7a52bc172841..64bd2d84367f 100644
--- 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;

-- 
2.32.0.93.g670b81a890-goog

Hello:

This patch was applied to bpf/bpf-next.git (refs/heads/master):

On Sun, 27 Jun 2021 08:36:27 -0700 you wrote:

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>
---
 kernel/trace/bpf_trace.c | 2 ++
 1 file changed, 2 insertions(+)

Here is the summary with links:
  - bpf: Allow bpf_get_current_ancestor_cgroup_id for tracing
    https://git.kernel.org/bpf/bpf-next/c/95b861a7935b

You are awesome, thank you!
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