Re: [PATCH] mm: make __paginginit based on CONFIG_MEMORY_HOTPLUG

[Pavel Tatashin]

Thats correct on arches where no sparsemem setup_usemap() will not be
freed up. It is a tiny function, just a few instructions. Not a big
deal.

Pavel
On Tue, Jul 31, 2018 at 10:51 AM Oscar Salvador
<osalvador@xxxxxxxxxxxxxxxxxx> wrote:
>
> On Tue, Jul 31, 2018 at 10:45:45AM -0400, Pavel Tatashin wrote:
> > Here the patch would look like this:
> >
> > From e640b32dbd329bba5a785cc60050d5d7e1ca18ce Mon Sep 17 00:00:00 2001
> > From: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
> > Date: Tue, 31 Jul 2018 10:37:44 -0400
> > Subject: [PATCH] mm: remove __paginginit
> >
> > __paginginit is the same thing as __meminit except for platforms without
> > sparsemem, there it is defined as __init.
> >
> > Remove __paginginit and use __meminit. Use __ref in one single function
> > that merges __meminit and __init sections: setup_usemap().
> >
> > Signed-off-by: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
>
> Uhm, I am probably missing something, but with this change, the functions will not be freed up
> while freeing init memory, right?
>
> Thanks
> --
> Oscar Salvador
> SUSE L3
>