Re: [PATCH bpf-next v4 1/7] bpf: Make struct cgroup btf id global

[David Vernet <void@manifault.com>]

On Sun, Oct 23, 2022 at 11:05:19AM -0700, Yonghong Song wrote:
> Make struct cgroup btf id global so later patch can reuse
> the same btf id.
> 
> Signed-off-by: Yonghong Song <yhs@fb.com>
> ---
>  include/linux/btf_ids.h  | 1 +
>  kernel/bpf/cgroup_iter.c | 2 +-
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h
> index 2aea877d644f..c9744efd202f 100644
> --- 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
> index 0d200a993489..c6ffc706d583 100644
> --- 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)
>  {
> -- 
> 2.30.2
> 

Acked-by: David Vernet <void@manifault.com>