On Tue, 9 Jun 2015 11:41:28 +0800 Zhu Guihua <zhugh.f...@cn.fujitsu.com> wrote:
> >> --- a/mm/memory_hotplug.c
> >> +++ b/mm/memory_hotplug.c
> >> @@ -513,6 +513,7 @@ int __ref __add_pages(int nid, struct zone *zone,
> >> unsigned long phys_start_pfn,
> >> break;
> >> err = 0;
> >> }
> >> + vmemmap_populate_print_last();
> >>
> >> return err;
> >> }
> > vmemmap_populate_print_last() is only available on x86_64, when
> > CONFIG_SPARSEMEM_VMEMMAP=y. Are you sure this won't break builds?
>
> I tried this on i386 and on x86_64 when CONFIG_SPARSEMEM_VMEMMAP=n ,
> it builds ok.
With powerpc:
akpm3:/usr/src/25> make allmodconfig
akpm3:/usr/src/25> make mm/memory_hotplug.o
akpm3:/usr/src/25> nm mm/memory_hotplug.o | grep vmemmap_populate_print_last
U .vmemmap_populate_print_last
akpm3:/usr/src/25> grep -r vmemmap_populate_print_last arch/powerpc
akpm3:/usr/src/25>
So I think that's going to break.
I expect ia64 will break also, but I didn't investigate.
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