Re: [PATCH 3/8] pseries: phyp dump: use sysfs to release reserved mem

["Linas Vepstas" <linasvepstas@gmail.com>]

On 14/02/2008, Tony Breeds <tony@bakeyournoodle.com> wrote:
> On Tue, Feb 12, 2008 at 01:11:58AM -0600, Manish Ahuja wrote:

>  > +static ssize_t
>  > +show_release_region(struct kset * kset, char *buf)
>  > +{
>  > +     return sprintf(buf, "ola\n");
>  > +}
>  > +
>  > +static struct subsys_attribute rr = __ATTR(release_region, 0600,
>  > +                                      show_release_region,
>  > +                                      store_release_region);
>
>
> Any reason this sysfs attribute can't be write only? The show method
>  doesn't seem needed.

This was supposed to be a place-holder; a later patch would add detailed
info.  The goal was to  have user-land tools that would operate these files
to progressively dump and release memory regions; however, until these
userland tools get written, the proper interface remains murky  (e.g.
real addresses? virtual addresses? just delta's or a whole memory map?
some sort of numa flags or whatever?)

--linas