On Mon, Jan 28, 2019 at 10:48 PM <valdis.kletni...@vt.edu> wrote:
>
> Building with W=1 reveals some bitrot
>
> CC kernel/bpf/cgroup.o
> kernel/bpf/cgroup.c:238: warning: Function parameter or member 'flags' not
> described in '__cgroup_bpf_attach'
> kernel/bpf/cgroup.c:367: warning: Function parameter or member 'unused_flags'
> not described in '__cgroup_bpf_detach'
>
> Add a kerneldoc line for 'flags'.
>
> Fixing the warning for 'unused_flags' is best approached by
> removing the unused parameter on the function call.
>
> Signed-off-by: Valdis Kletnieks <valdis.kletni...@vt.edu>
Thanks!
Acked-by: Song Liu <songliubrav...@fb.com>
PS: For future patches, please specify which tree the patch should be
applied to with [PATCH bpf] or [PATCH bpf-next].
>
> diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
> index 588dd5f0bd85..695b2a880d9a 100644
> --- a/include/linux/bpf-cgroup.h
> +++ b/include/linux/bpf-cgroup.h
> @@ -78,7 +78,7 @@ int cgroup_bpf_inherit(struct cgroup *cgrp);
> int __cgroup_bpf_attach(struct cgroup *cgrp, struct bpf_prog *prog,
> enum bpf_attach_type type, u32 flags);
> int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
> - enum bpf_attach_type type, u32 flags);
> + enum bpf_attach_type type);
> int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
> union bpf_attr __user *uattr);
>
> diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
> index ab612fe9862f..d78cfec5807d 100644
> --- a/kernel/bpf/cgroup.c
> +++ b/kernel/bpf/cgroup.c
> @@ -230,6 +230,7 @@ static int update_effective_progs(struct cgroup *cgrp,
> * @cgrp: The cgroup which descendants to traverse
> * @prog: A program to attach
> * @type: Type of attach operation
> + * @flags: Option flags
> *
> * Must be called with cgroup_mutex held.
> */
> @@ -363,7 +364,7 @@ int __cgroup_bpf_attach(struct cgroup *cgrp, struct
> bpf_prog *prog,
> * Must be called with cgroup_mutex held.
> */
> int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
> - enum bpf_attach_type type, u32 unused_flags)
> + enum bpf_attach_type type)
> {
> struct list_head *progs = &cgrp->bpf.progs[type];
> enum bpf_cgroup_storage_type stype;
> diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
> index 6d03a27918f4..9802ab424397 100644
> --- a/kernel/cgroup/cgroup.c
> +++ b/kernel/cgroup/cgroup.c
> @@ -6059,7 +6059,7 @@ int cgroup_bpf_detach(struct cgroup *cgrp, struct
> bpf_prog *prog,
> int ret;
>
> mutex_lock(&cgroup_mutex);
> - ret = __cgroup_bpf_detach(cgrp, prog, type, flags);
> + ret = __cgroup_bpf_detach(cgrp, prog, type);
> mutex_unlock(&cgroup_mutex);
> return ret;
> }
>
