Re: [PATCH net-next v10] net: reduce ARFS flow updates by checking LLC affinity

[Neal Cardwell]

On Thu, Oct 8, 2026 at 9:33 AM Chuang Wang <nashuiliang@xxxxxxxxx> wrote:
>
...
> --- a/net/core/sysctl_net_core.c
> +++ b/net/core/sysctl_net_core.c
> @@ -560,6 +560,13 @@ static struct ctl_table net_core_table[] = {
>                 .mode           = 0644,
>                 .proc_handler   = rps_sock_flow_sysctl
>         },
> +       {
> +               .procname       = "rps_feat_llc_affinity",
> +               .data           = &rps_feat_llc_affinity.key,
> +               .maxlen         = sizeof(rps_feat_llc_affinity.key),
> +               .mode           = 0644,
> +               .proc_handler   = proc_do_static_key
> +       },

Having "feat_" in the name of a sysctl seems redundant, since most
sysctls are features.

Also, the name seems overly broad, as it could also apply to other
RPS/RFS mechanisms leveraging LLC affinity, for which we might want
separate sysctl control knobs. I'd suggest perhaps something more
specific, like "rps_llc_affinity_for_set_cpu".

neal