Re: [PATCH v3 01/19] xen: dump vNUMA information with debug key "u"

[Andrew Cooper <andrew.cooper3@citrix.com>]

On 13/01/15 12:11, Wei Liu wrote:
> @@ -408,6 +413,49 @@ static void dump_numa(unsigned char key)
>  
>          for_each_online_node ( i )
>              printk("    Node %u: %u\n", i, page_num_node[i]);
> +
> +        if ( !d->vnuma )
> +                continue;

Nit - extraneous whitespace.

> +
> +        vnuma = d->vnuma;
> +        printk("     %u vnodes, %u vcpus:\n", vnuma->nr_vnodes, d->max_vcpus);
> +        for ( i = 0; i < vnuma->nr_vnodes; i++ )
> +        {
> +            err = snprintf(keyhandler_scratch, 12, "%3u",
> +                    vnuma->vnode_to_pnode[i]);
> +            if ( err < 0 || vnuma->vnode_to_pnode[i] == NUMA_NO_NODE )
> +                strlcpy(keyhandler_scratch, "???", 3);
> +
> +            printk("       vnode  %3u - pnode %s\n", i, keyhandler_scratch);
> +            for ( j = 0; j < vnuma->nr_vmemranges; j++ )
> +            {
> +                if ( vnuma->vmemrange[j].nid == i )
> +                {
> +                    printk("         %016"PRIx64" - %016"PRIx64"\n",
> +                           vnuma->vmemrange[j].start,
> +                           vnuma->vmemrange[j].end);
> +                }
> +            }
> +
> +            printk("       vcpus: ");
> +            for ( j = 0, n = 0; j < d->max_vcpus; j++ )
> +            {
> +                if ( !(j & 0x3f) )
> +                    process_pending_softirqs();
> +
> +                if ( vnuma->vcpu_to_vnode[j] == i )
> +                {
> +                    if ( (n + 1) % 8 == 0 )
> +                        printk("%3d\n", j);
> +                    else if ( !(n % 8) && n != 0 )
> +                        printk("%17d ", j);
> +                    else
> +                        printk("%3d ", j);
> +                    n++;
> +                }

Do you have a sample of what this looks like for a VM with more than 8
vcpus ?

~Andrew

> +            }
> +            printk("\n");
> +        }
>      }
>  
>      rcu_read_unlock(&domlist_read_lock);