Hi Tejun,
On Wed, Aug 28, 2019 at 11:48 PM Tejun Heo <t...@kernel.org> wrote:
>
> Hello, Namhyung.
>
> On Wed, Aug 28, 2019 at 04:31:22PM +0900, Namhyung Kim wrote:
> > + * struct {
> > + * struct perf_event_header header;
> > + * u64 ino;
> > + * u64 path_len;
> > + * char path[];
>
> ino and path aren't great identifers for cgroups because both can get
> recycled pretty quickly. Can you please take a look at
> KERNFS_ROOT_SUPPORT_EXPORTOP? That's the fhandle that cgroup uses,
> currently the standard ino+gen which isn't ideal but good enough.
> Another benefit is that the path can also be resolved efficiently from
> userspace given the handle.
Thanks for the info, I'll take a look at it.
Namhyung
