bpf: Make struct cgroup btf id global

yonghong-song · Alexei Starovoitov · commit 5e67b8ef125b · 2022-10-25T23:19:19.000-07:00
Make struct cgroup btf id global so later patch can reuse the same btf id. Acked-by: David Vernet <void@manifault.com> Signed-off-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/r/20221026042840.672602-1-yhs@fb.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h
@@ -265,5 +265,6 @@ MAX_BTF_TRACING_TYPE,
 };
 
 extern u32 btf_tracing_ids[];
+extern u32 bpf_cgroup_btf_id[];
 
 #endif
diff --git a/kernel/bpf/cgroup_iter.c b/kernel/bpf/cgroup_iter.c
@@ -157,7 +157,7 @@ static const struct seq_operations cgroup_iter_seq_ops = {
 	.show   = cgroup_iter_seq_show,
 };
 
-BTF_ID_LIST_SINGLE(bpf_cgroup_btf_id, struct, cgroup)
+BTF_ID_LIST_GLOBAL_SINGLE(bpf_cgroup_btf_id, struct, cgroup)
 
 static int cgroup_iter_seq_init(void *priv, struct bpf_iter_aux_info *aux)
 {

Original file line number	Diff line number	Diff line change
`@@ -157,7 +157,7 @@ static const struct seq_operations cgroup_iter_seq_ops = {`
`157`	`157`	`.show = cgroup_iter_seq_show,`
`158`	`158`	`};`
`159`	`159`
`160`		`-BTF_ID_LIST_SINGLE(bpf_cgroup_btf_id, struct, cgroup)`
	`160`	`+BTF_ID_LIST_GLOBAL_SINGLE(bpf_cgroup_btf_id, struct, cgroup)`
`161`	`161`
`162`	`162`	`static int cgroup_iter_seq_init(void priv, struct bpf_iter_aux_info aux)`
`163`	`163`	`{`