Hi Tony,
On 26/01/2023 18:41, Tony Luck wrote:
> Make it easy for the user to tell if Sub-NUMA Cluster is enabled by
> providing an info/ file.
I think what this is conveying to user-space is 'domain_id_is_numa_node'.
Does user-space need to know the number of ways?
Will this always be a single number, or will it ever be possible to have an SNC=2 and
SNC=1 package in the same system?
Thanks,
James
> diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> index a0dc64a70d01..392e7a08d083 100644
> --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
> @@ -997,6 +997,14 @@ static int rdt_num_rmids_show(struct kernfs_open_file *of,
> return 0;
> }
>
> +static int rdt_snc_ways_show(struct kernfs_open_file *of,
> + struct seq_file *seq, void *v)
> +{
> + seq_printf(seq, "%d\n", snc_ways);
> +
> + return 0;
> +}
> +
> static int rdt_mon_features_show(struct kernfs_open_file *of,
> struct seq_file *seq, void *v)
> {
> @@ -1451,6 +1459,13 @@ static struct rftype res_common_files[] = {
> .seq_show = rdt_num_rmids_show,
> .fflags = RF_MON_INFO,
> },
> + {
> + .name = "snc_ways",
> + .mode = 0444,
> + .kf_ops = &rdtgroup_kf_single_ops,
> + .seq_show = rdt_snc_ways_show,
> + .fflags = RF_MON_INFO,
> + },
> {
> .name = "cbm_mask",
> .mode = 0444,
