On Thu, Sep 08, 2016 at 03:04:12PM -0700, Shaohua Li wrote:
> On Thu, Sep 08, 2016 at 02:57:21AM -0700, Fenghua Yu wrote:
> > /*
> > * kernfs_root - find out the kernfs_root a kernfs_node belongs to
> > @@ -730,6 +749,110 @@ static void rdtgroup_destroy_locked(struct rdtgroup
> > *rdtgrp)
> > kernfs_remove(rdtgrp->kn);
> > }
> >
> > +static int rdtgroup_mkdir(struct kernfs_node *parent_kn, const char *name,
> > + umode_t mode)
> > +{
> > + struct rdtgroup *parent, *rdtgrp;
> > + struct rdtgroup_root *root;
> > + struct kernfs_node *kn;
> > + int ret;
> > +
> > + if (parent_kn != root_rdtgrp->kn)
> > + return -EPERM;
> > +
>
> So we can't create nested groups. Is this limitation temporary? I don't see
> this is mentioned in the interface document.
Yes, we cannot create nested groups, i.e. up to one level of sub-directory
in the resctrl file system. This is different from cgroup.
I can add this info in the intel_rdt_ui.txt.
Thanks.
-Fenghua
